From: Lee Date: Fri, 26 Aug 2016 03:45:37 +0000 (+0000) Subject: rebuilt .html docs for privoxy version 3.0.26 X-Git-Tag: v_3_0_26~19 X-Git-Url: http://www.privoxy.org/gitweb/?p=privoxy.git;a=commitdiff_plain;h=7d0d8bdd53947864c64d968062ca132b65f2e162 rebuilt .html docs for privoxy version 3.0.26 --- diff --git a/doc/webserver/developer-manual/coding.html b/doc/webserver/developer-manual/coding.html index c0fbcaa5..eff19bdb 100644 --- a/doc/webserver/developer-manual/coding.html +++ b/doc/webserver/developer-manual/coding.html @@ -1,98 +1,89 @@ - + + - - - Coding Guidelines - - - - - - - - - -
- - - - - - - - - -
- Privoxy Developer Manual -
- Prev - - - Next -
-
+ + Coding Guidelines + + + + + + + + + +
+ + + + + + + + + + + + +
Privoxy Developer Manual
PrevNext
+
+
+ +
+

4. Coding + Guidelines

+ +
+

4.1. Introduction

+ +

This set of standards is designed to make our lives easier. It is + developed with the simple goal of helping us keep the "new and improved + Privoxy" consistent and reliable. Thus + making maintenance easier and increasing chances of success of the + project.

+ +

And that of course comes back to us as individuals. If we can + increase our development and product efficiencies then we can solve + more of the request for changes/improvements and in general feel good + about ourselves. ;->

-
-

- 4. Coding Guidelines -

-
-

- 4.1. Introduction -

-

- This set of standards is designed to make our lives easier. It is - developed with the simple goal of helping us keep the "new and - improved Privoxy" consistent and - reliable. Thus making maintenance easier and increasing chances of - success of the project. -

-

- And that of course comes back to us as individuals. If we can - increase our development and product efficiencies then we can solve - more of the request for changes/improvements and in general feel - good about ourselves. ;-> -

-
-
-

- 4.2. Using Comments -

-
-

- 4.2.1. Comment, Comment, Comment -

-

- Explanation: -

-

- Comment as much as possible without commenting the obvious. For - example do not comment "variable_a is equal to variable_b". - Instead explain why variable_a should be equal to the variable_b. - Just because a person can read code does not mean they will - understand why or what is being done. A reader may spend a lot - more time figuring out what is going on when a simple comment or - explanation would have prevented the extra research. Please help - your fellow Privoxy developers out! -

-

- The comments will also help justify the intent of the code. If - the comment describes something different than what the code is - doing then maybe a programming error is occurring. -

-

- Example: -

- - - + +
-
+
+    

+      
4.2. Using Comments

+
+      

+        
4.2.1. Comment, Comment,
+        Comment

+
+        
Explanation:

+
+        
Comment as much as possible without commenting the obvious. For
+        example do not comment "variable_a is equal to variable_b". Instead
+        explain why variable_a should be equal to the variable_b. Just
+        because a person can read code does not mean they will understand why
+        or what is being done. A reader may spend a lot more time figuring
+        out what is going on when a simple comment or explanation would have
+        prevented the extra research. Please help your fellow Privoxy
+        developers out!

+
+        
The comments will also help justify the intent of the code. If the
+        comment describes something different than what the code is doing
+        then maybe a programming error is occurring.

+
+        
Example:

+
+        
+          
+            
-            
-          

+              
 /* if page size greater than 1k ... */
 if (page_length() > 1024)
 {
@@ -109,32 +100,30 @@ This demonstrates 2 cases of "what not to do".  The first is a
 "syntax comment".  The second is a comment that does not fit what
 is actually being done.
 

-              

-        

-        

-          

-            4.2.2. Use blocks for comments
-          

-          

-            Explanation:
-          

-          

-            Comments can help or they can clutter. They help when they are
-            differentiated from the code they describe. One line comments do
-            not offer effective separation between the comment and the code.
-            Block identifiers do, by surrounding the code with a clear,
-            definable pattern.
-          

-          

-            Example:
-          

-          
-            
-              
+          
+        

-
+            

+      

+
+      

+        
4.2.2. Use blocks for
+        comments

+
+        
Explanation:

+
+        
Comments can help or they can clutter. They help when they are
+        differentiated from the code they describe. One line comments do not
+        offer effective separation between the comment and the code. Block
+        identifiers do, by surrounding the code with a clear, definable
+        pattern.

+
+        
Example:

+
+        
+          
+            
-            
-          

+              
 /*********************************************************************
  * This will stand out clearly in your code!
  *********************************************************************/
@@ -156,43 +145,39 @@ if (this_variable == that_variable) /* this may not either */
    do_something_very_important();
 }
 

-              

-          

-            Exception:
-          

-          

-            If you are trying to add a small logic comment and do not wish to
-            "disrupt" the flow of the code, feel free to use a 1 line comment
-            which is NOT on the same line as the code.
-          

-        

-        

-          

-            4.2.3. Keep Comments on their own line
-          

-          

-            Explanation:
-          

-          

-            It goes back to the question of readability. If the comment is on
-            the same line as the code it will be harder to read than the
-            comment that is on its own line.
-          

-          

-            There are three exceptions to this rule, which should be violated
-            freely and often: during the definition of variables, at the end
-            of closing braces, when used to comment parameters.
-          

-          

-            Example:
-          

-          
-            
-              
+          
+        

-
+            

+
+        
Exception:

+
+        
If you are trying to add a small logic comment and do not wish to
+        "disrupt" the flow of the code, feel free to use a 1 line comment
+        which is NOT on the same line as the code.

+      

+
+      

+        
4.2.3. Keep Comments on their
+        own line

+
+        
Explanation:

+
+        
It goes back to the question of readability. If the comment is on
+        the same line as the code it will be harder to read than the comment
+        that is on its own line.

+
+        
There are three exceptions to this rule, which should be violated
+        freely and often: during the definition of variables, at the end of
+        closing braces, when used to comment parameters.

+
+        
Example:

+
+        
+          
+            
-            
-          

+              
 /*********************************************************************
  * This will stand out clearly in your code,
  * But the second example won't.
@@ -228,86 +213,74 @@ short do_something_very_important(
 
 }   /* -END- do_something_very_important */
 

-              

-        

-        

-          

-            4.2.4. Comment each logical step
-          

-          

-            Explanation:
-          

-          

-            Logical steps should be commented to help others follow the
-            intent of the written code and comments will make the code more
-            readable.
-          

-          

-            If you have 25 lines of code without a comment, you should
-            probably go back into it to see where you forgot to put one.
-          

-          

-            Most "for", "while", "do", etc... loops _probably_ need a
-            comment. After all, these are usually major logic containers.
-          

-        

-        

-          

-            4.2.5. Comment All Functions Thoroughly
-          

-          

-            Explanation:
-          

-          

-            A reader of the code should be able to look at the comments just
-            prior to the beginning of a function and discern the reason for
-            its existence and the consequences of using it. The reader should
-            not have to read through the code to determine if a given
-            function is safe for a desired use. The proper information
-            thoroughly presented at the introduction of a function not only
-            saves time for subsequent maintenance or debugging, it more
-            importantly aids in code reuse by allowing a user to determine
-            the safety and applicability of any function for the problem at
-            hand. As a result of such benefits, all functions should contain
-            the information presented in the addendum section of this
-            document.
-          

-        

-        

-          

-            4.2.6. Comment at the end of braces if the content
-            is more than one screen length
-          

-          

-            Explanation:
-          

-          

-            Each closing brace should be followed on the same line by a
-            comment that describes the origination of the brace if the
-            original brace is off of the screen, or otherwise far away from
-            the closing brace. This will simplify the debugging, maintenance,
-            and readability of the code.
-          

-          

-            As a suggestion , use the following flags to make the comment and
-            its brace more readable:
-          

-          

-            use following a closing brace: } /* -END- if() or while () or
-            etc... */
-          

-          

-            Example:
-          

-          
-            
-              
+          
+        

-
+            

+      

+
+      

+        
4.2.4. Comment each logical
+        step

+
+        
Explanation:

+
+        
Logical steps should be commented to help others follow the intent
+        of the written code and comments will make the code more
+        readable.

+
+        
If you have 25 lines of code without a comment, you should
+        probably go back into it to see where you forgot to put one.

+
+        
Most "for", "while", "do", etc... loops _probably_ need a comment.
+        After all, these are usually major logic containers.

+      

+
+      

+        
4.2.5. Comment All Functions
+        Thoroughly

+
+        
Explanation:

+
+        
A reader of the code should be able to look at the comments just
+        prior to the beginning of a function and discern the reason for its
+        existence and the consequences of using it. The reader should not
+        have to read through the code to determine if a given function is
+        safe for a desired use. The proper information thoroughly presented
+        at the introduction of a function not only saves time for subsequent
+        maintenance or debugging, it more importantly aids in code reuse by
+        allowing a user to determine the safety and applicability of any
+        function for the problem at hand. As a result of such benefits, all
+        functions should contain the information presented in the addendum
+        section of this document.

+      

+
+      

+        
4.2.6. Comment at the end of
+        braces if the content is more than one screen length

+
+        
Explanation:

+
+        
Each closing brace should be followed on the same line by a
+        comment that describes the origination of the brace if the original
+        brace is off of the screen, or otherwise far away from the closing
+        brace. This will simplify the debugging, maintenance, and readability
+        of the code.

+
+        
As a suggestion , use the following flags to make the comment and
+        its brace more readable:

+
+        
use following a closing brace: } /* -END- if() or while () or
+        etc... */

+
+        
Example:

+
+        
+          
+            
-            
-          

+              
 if (1 == X)
 {
    do_something_very_important();
@@ -322,301 +295,280 @@ if (1 == X)
    ...some long list of commands...
 } /* -END- if (1 == X) */
 

-              

-        

+
-
-

- 4.3. Naming Conventions -

-
-

- 4.3.1. Variable Names -

-

- Explanation: -

-

- Use all lowercase, and separate words via an underscore ('_'). Do - not start an identifier with an underscore. (ANSI C reserves - these for use by the compiler and system headers.) Do not use - identifiers which are reserved in ANSI C++. (E.g. template, - class, true, false, ...). This is in case we ever decide to port - Privoxy to C++. -

-

- Example: -

- - - + +
-
+    
+
+    

+      
4.3. Naming Conventions

+
+      

+        
4.3.1. Variable
+        Names

+
+        
Explanation:

+
+        
Use all lowercase, and separate words via an underscore ('_'). Do
+        not start an identifier with an underscore. (ANSI C reserves these
+        for use by the compiler and system headers.) Do not use identifiers
+        which are reserved in ANSI C++. (E.g. template, class, true, false,
+        ...). This is in case we ever decide to port Privoxy to C++.

+
+        
Example:

+
+        
+          
+            
-            
-          

+              
 int ms_iis5_hack = 0;
 

-              

-          

-            Instead of:
-          

-          
-            
-              
+          
+        

-
+            

+
+        
Instead
+        of:

+
+        
+          
+            
-            
-          

+              
 int msiis5hack = 0; int msIis5Hack = 0;
 

-              

-        

-        

-          

-            4.3.2. Function Names
-          

-          

-            Explanation:
-          

-          

-            Use all lowercase, and separate words via an underscore ('_'). Do
-            not start an identifier with an underscore. (ANSI C reserves
-            these for use by the compiler and system headers.) Do not use
-            identifiers which are reserved in ANSI C++. (E.g. template,
-            class, true, false, ...). This is in case we ever decide to port
-            Privoxy to C++.
-          

-          

-            Example:
-          

-          
-            
-              
+          
+        

-
+            

+      

+
+      

+        
4.3.2. Function
+        Names

+
+        
Explanation:

+
+        
Use all lowercase, and separate words via an underscore ('_'). Do
+        not start an identifier with an underscore. (ANSI C reserves these
+        for use by the compiler and system headers.) Do not use identifiers
+        which are reserved in ANSI C++. (E.g. template, class, true, false,
+        ...). This is in case we ever decide to port Privoxy to C++.

+
+        
Example:

+
+        
+          
+            
-            
-          

+              
 int load_some_file(struct client_state *csp)
 

-              

-          

-            Instead of:
-          

-          
-            
-              
+          
+        

-
+            

+
+        
Instead
+        of:

+
+        
+          
+            
-            
-          

+              
 int loadsomefile(struct client_state *csp)
 int loadSomeFile(struct client_state *csp)
 

-              

-        

-        

-          

-            4.3.3. Header file prototypes
-          

-          

-            Explanation:
-          

-          

-            Use a descriptive parameter name in the function prototype in
-            header files. Use the same parameter name in the header file that
-            you use in the c file.
-          

-          

-            Example:
-          

-          
-            
-              
+          
+        

-
+            

+      

+
+      

+        
4.3.3. Header file
+        prototypes

+
+        
Explanation:

+
+        
Use a descriptive parameter name in the function prototype in
+        header files. Use the same parameter name in the header file that you
+        use in the c file.

+
+        
Example:

+
+        
+          
+            
-            
-          

+              
 (.h) extern int load_aclfile(struct client_state *csp);
 (.c) int load_aclfile(struct client_state *csp)
 

-              

-          

-            Instead of:
-          

-          
-            
-              
+          
+        

-
+            

+
+        
Instead
+        of:

+
+        
+          
+            
-            
-          

+              
 (.h) extern int load_aclfile(struct client_state *); or
 (.h) extern int load_aclfile();
 (.c) int load_aclfile(struct client_state *csp)
 

-              

-        

-        

-          

-            4.3.4. Enumerations, and #defines
-          

-          

-            Explanation:
-          

-          

-            Use all capital letters, with underscores between words. Do not
-            start an identifier with an underscore. (ANSI C reserves these
-            for use by the compiler and system headers.)
-          

-          

-            Example:
-          

-          
-            
-              
+          
+        

-
+            

+      

+
+      

+        
4.3.4. Enumerations, and
+        #defines

+
+        
Explanation:

+
+        
Use all capital letters, with underscores between words. Do not
+        start an identifier with an underscore. (ANSI C reserves these for
+        use by the compiler and system headers.)

+
+        
Example:

+
+        
+          
+            
-            
-          

+              
 (enumeration) : enum Boolean {FALSE, TRUE};
 (#define) : #define DEFAULT_SIZE 100;
 

-              

-          

-            Note: We
-            have a standard naming scheme for #defines that toggle a feature
-            in the preprocessor: FEATURE_>, where > is a short
-            (preferably 1 or 2 word) description.
-          

-          

-            Example:
-          

-          
-            
-              
+          
+        

-
+            

+
+        
Note: We
+        have a standard naming scheme for #defines that toggle a feature in
+        the preprocessor: FEATURE_>, where > is a short (preferably 1
+        or 2 word) description.

+
+        
Example:

+
+        
+          
+            
-            
-          

+              
 #define FEATURE_FORCE 1
 
 #ifdef FEATURE_FORCE
 #define FORCE_PREFIX blah
 #endif /* def FEATURE_FORCE */
 

-              

-        

-        

-          

-            4.3.5. Constants
-          

-          

-            Explanation:
-          

-          

-            Spell common words out entirely (do not remove vowels).
-          

-          

-            Use only widely-known domain acronyms and abbreviations.
-            Capitalize all letters of an acronym.
-          

-          

-            Use underscore (_) to separate adjacent acronyms and
-            abbreviations. Never terminate a name with an underscore.
-          

-          

-            Example:
-          

-          
-            
-              
+          
+        

-
+            

+      

+
+      

+        
4.3.5. Constants

+
+        
Explanation:

+
+        
Spell common words out entirely (do not remove vowels).

+
+        
Use only widely-known domain acronyms and abbreviations.
+        Capitalize all letters of an acronym.

+
+        
Use underscore (_) to separate adjacent acronyms and
+        abbreviations. Never terminate a name with an underscore.

+
+        
Example:

+
+        
+          
+            
-            
-          

+              
 #define USE_IMAGE_LIST 1
 

-              

-          

-            Instead of:
-          

-          
-            
-              
+          
+        

-
+            

+
+        
Instead
+        of:

+
+        
+          
+            
-            
-          

+              
 #define USE_IMG_LST 1 or
 #define _USE_IMAGE_LIST 1 or
 #define USE_IMAGE_LIST_ 1 or
 #define use_image_list 1 or
 #define UseImageList 1
 

-              

-        

+
-
-

- 4.4. Using Space -

-
-

- 4.4.1. Put braces on a line by themselves. -

-

- Explanation: -

-

- The brace needs to be on a line all by itself, not at the end of - the statement. Curly braces should line up with the construct - that they're associated with. This practice makes it easier to - identify the opening and closing braces for a block. -

-

- Example: -

- - - + +
-
+    
+
+    

+      
4.4. Using Space

+
+      

+        
4.4.1. Put braces on a line
+        by themselves.

+
+        
Explanation:

+
+        
The brace needs to be on a line all by itself, not at the end of
+        the statement. Curly braces should line up with the construct that
+        they're associated with. This practice makes it easier to identify
+        the opening and closing braces for a block.

+
+        
Example:

+
+        
+          
+            
-            
-          

+              
 if (this == that)
 {
    ...
 }
 

-              

-          

-            Instead of:
-          

-          

-            if (this == that) { ... }
-          

-          

-            or
-          

-          

-            if (this == that) { ... }
-          

-          

-            Note: In
-            the special case that the if-statement is inside a loop, and it
-            is trivial, i.e. it tests for a condition that is obvious from
-            the purpose of the block, one-liners as above may optically
-            preserve the loop structure and make it easier to read.
-          

-          

-            Status:
-            developer-discretion.
-          

-          

-            Example
-            exception:
-          

-          
-            
-              
+          
+        

-
+            

+
+        
Instead
+        of:

+
+        
if (this == that) { ... }

+
+        
or

+
+        
if (this == that) { ... }

+
+        
Note: In the
+        special case that the if-statement is inside a loop, and it is
+        trivial, i.e. it tests for a condition that is obvious from the
+        purpose of the block, one-liners as above may optically preserve the
+        loop structure and make it easier to read.

+
+        
Status:
+        developer-discretion.

+
+        
Example
+        exception:

+
+        
+          
+            
-            
-          

+              
 while (more lines are read)
 {
    /* Please document what is/is not a comment line here */
@@ -625,170 +577,151 @@ while (more lines are read)
    do_something(line);
 }
 

-              

-        

-        

-          

-            4.4.2. ALL control statements should have a
-            block
-          

-          

-            Explanation:
-          

-          

-            Using braces to make a block will make your code more readable
-            and less prone to error. All control statements should have a
-            block defined.
-          

-          

-            Example:
-          

-          
-            
-              
+          
+        

-
+            

+      

+
+      

+        
4.4.2. ALL control
+        statements should have a block

+
+        
Explanation:

+
+        
Using braces to make a block will make your code more readable and
+        less prone to error. All control statements should have a block
+        defined.

+
+        
Example:

+
+        
+          
+            
-            
-          

+              
 if (this == that)
 {
    do_something();
    do_something_else();
 }
 

-              

-          

-            Instead of:
-          

-          

-            if (this == that) do_something(); do_something_else();
-          

-          

-            or
-          

-          

-            if (this == that) do_something();
-          

-          

-            Note: The
-            first example in "Instead of" will execute in a manner other than
-            that which the developer desired (per indentation). Using code
-            braces would have prevented this "feature". The "explanation" and
-            "exception" from the point above also applies.
-          

-        

-        

-          

-            4.4.3. Do not belabor/blow-up boolean
-            expressions
-          

-          

-            Example:
-          

-          
-            
-              
+          
+        

-
+            

+
+        
Instead
+        of:

+
+        
if (this == that) do_something(); do_something_else();

+
+        
or

+
+        
if (this == that) do_something();

+
+        
Note: The
+        first example in "Instead of" will execute in a manner other than
+        that which the developer desired (per indentation). Using code braces
+        would have prevented this "feature". The "explanation" and
+        "exception" from the point above also applies.

+      

+
+      

+        
4.4.3. Do not
+        belabor/blow-up boolean expressions

+
+        
Example:

+
+        
+          
+            
-            
-          

+              
 structure->flag = (condition);
 

-              

-          

-            Instead of:
-          

-          

-            if (condition) { structure->flag = 1; } else {
-            structure->flag = 0; }
-          

-          

-            Note: The
-            former is readable and concise. The later is wordy and
-            inefficient. Please assume that any developer new to the project
-            has at least a "good" knowledge of C/C++. (Hope I do not offend
-            by that last comment ... 8-)
-          

-        

-        

-          

-            4.4.4. Use white space freely because it is
-            free
-          

-          

-            Explanation:
-          

-          

-            Make it readable. The notable exception to using white space
-            freely is listed in the next guideline.
-          

-          

-            Example:
-          

-          
-            
-              
+          
+        

-
+            

+
+        
Instead
+        of:

+
+        
if (condition) { structure->flag = 1; } else {
+        structure->flag = 0; }

+
+        
Note: The
+        former is readable and concise. The later is wordy and inefficient.
+        Please assume that any developer new to the project has at least a
+        "good" knowledge of C/C++. (Hope I do not offend by that last comment
+        ... 8-)

+      

+
+      

+        
4.4.4. Use white space
+        freely because it is free

+
+        
Explanation:

+
+        
Make it readable. The notable exception to using white space
+        freely is listed in the next guideline.

+
+        
Example:

+
+        
+          
+            
-            
-          

+              
 int first_value   = 0;
 int some_value    = 0;
 int another_value = 0;
 int this_variable = 0;
 

-              

-        

-        

-          

-            4.4.5. Don't use white space around structure
-            operators
-          

-          

-            Explanation:
-          

-          

-            - structure pointer operator ( "->" ) - member operator ( "."
-            ) - functions and parentheses
-          

-          

-            It is a general coding practice to put pointers, references, and
-            function parentheses next to names. With spaces, the connection
-            between the object and variable/function name is not as clear.
-          

-          

-            Example:
-          

-          
-            
-              
+          
+        

-
+            

+      

+
+      

+        
4.4.5. Don't use white space
+        around structure operators

+
+        
Explanation:

+
+        
- structure pointer operator ( "->" ) - member operator ( "." )
+        - functions and parentheses

+
+        
It is a general coding practice to put pointers, references, and
+        function parentheses next to names. With spaces, the connection
+        between the object and variable/function name is not as clear.

+
+        
Example:

+
+        
+          
+            
-            
-          

+              
 a_struct->a_member;
 a_struct.a_member;
 function_name();
 

-              

-          

-            Instead of:
-            a_struct -> a_member; a_struct . a_member; function_name ();
-          

-        

-        

-          

-            4.4.6. Make the last brace of a function stand
-            out
-          

-          

-            Example:
-          

-          
-            
-              
+          
+        

-
+            

+
+        
Instead of:
+        a_struct -> a_member; a_struct . a_member; function_name ();

+      

+
+      

+        
4.4.6. Make the last brace
+        of a function stand out

+
+        
Example:

+
+        
+          
+            
-            
-          

+              
 int function1( ... )
 {
    ...code...
@@ -801,52 +734,47 @@ int function2( ... )
 {
 } /* -END- function2 */
 

-              

-          

-            Instead of:
-          

-          

-            int function1( ... ) { ...code... return(ret_code); } int
-            function2( ... ) { }
-          

-          

-            Note: Use 1
-            blank line before the closing brace and 2 lines afterward. This
-            makes the end of function standout to the most casual viewer.
-            Although function comments help separate functions, this is still
-            a good coding practice. In fact, I follow these rules when using
-            blocks in "for", "while", "do" loops, and long if {} statements
-            too. After all whitespace is free!
-          

-          

-            Status:
-            developer-discretion on the number of blank lines. Enforced is
-            the end of function comments.
-          

-        

-        

-          

-            4.4.7. Use 3 character indentions
-          

-          

-            Explanation:
-          

-          

-            If some use 8 character TABs and some use 3 character TABs, the
-            code can look *very* ragged. So use 3 character indentions only.
-            If you like to use TABs, pass your code through a filter such as
-            "expand -t3" before checking in your code.
-          

-          

-            Example:
-          

-          
-            
-              
+          
+        

-
+            

+
+        
Instead
+        of:

+
+        
int function1( ... ) { ...code... return(ret_code); } int
+        function2( ... ) { }

+
+        
Note: Use 1
+        blank line before the closing brace and 2 lines afterward. This makes
+        the end of function standout to the most casual viewer. Although
+        function comments help separate functions, this is still a good
+        coding practice. In fact, I follow these rules when using blocks in
+        "for", "while", "do" loops, and long if {} statements too. After all
+        whitespace is free!

+
+        
Status:
+        developer-discretion on the number of blank lines. Enforced is the
+        end of function comments.

+      

+
+      

+        
4.4.7. Use 3 character
+        indentions

+
+        
Explanation:

+
+        
If some use 8 character TABs and some use 3 character TABs, the
+        code can look *very* ragged. So use 3 character indentions only. If
+        you like to use TABs, pass your code through a filter such as "expand
+        -t3" before checking in your code.

+
+        
Example:

+
+        
+          
+            
-            
-          

+              
 static const char * const url_code_map[256] =
 {
    NULL, ...
@@ -868,154 +796,136 @@ int function1( ... )
 
 }
 

-              

-        

+
-
-

- 4.5. Initializing -

-
-

- 4.5.1. Initialize all variables -

-

- Explanation: -

-

- Do not assume that the variables declared will not be used until - after they have been assigned a value somewhere else in the code. - Remove the chance of accidentally using an unassigned variable. -

-

- Example: -

- - - + +
-
+    
+
+    

+      
4.5. Initializing

+
+      

+        
4.5.1. Initialize all
+        variables

+
+        
Explanation:

+
+        
Do not assume that the variables declared will not be used until
+        after they have been assigned a value somewhere else in the code.
+        Remove the chance of accidentally using an unassigned variable.

+
+        
Example:

+
+        
+          
+            
-            
-          

+              
 short a_short = 0;
 float a_float  = 0;
 struct *ptr = NULL;
 

-              

-          

-            Note: It is
-            much easier to debug a SIGSEGV if the message says you are trying
-            to access memory address 00000000 and not 129FA012; or
-            array_ptr[20] causes a SIGSEV vs. array_ptr[0].
-          

-          

-            Status:
-            developer-discretion if and only if the variable is assigned a
-            value "shortly after" declaration.
-          

-        

+
+ +

Note: It is + much easier to debug a SIGSEGV if the message says you are trying to + access memory address 00000000 and not 129FA012; or array_ptr[20] + causes a SIGSEV vs. array_ptr[0].

+ +

Status: + developer-discretion if and only if the variable is assigned a value + "shortly after" declaration.

-
-

- 4.6. Functions -

-
-

- 4.6.1. Name functions that return a boolean as a - question. -

-

- Explanation: -

-

- Value should be phrased as a question that would logically be - answered as a true or false statement -

-

- Example: -

- - - + +
-
+    
+
+    

+      
4.6. Functions

+
+      

+        
4.6.1. Name functions that
+        return a boolean as a question.

+
+        
Explanation:

+
+        
Value should be phrased as a question that would logically be
+        answered as a true or false statement

+
+        
Example:

+
+        
+          
+            
-            
-          

+              
 should_we_block_this();
 contains_an_image();
 is_web_page_blank();
 

-              

-        

-        

-          

-            4.6.2. Always specify a return type for a
-            function.
-          

-          

-            Explanation:
-          

-          

-            The default return for a function is an int. To avoid ambiguity,
-            create a return for a function when the return has a purpose, and
-            create a void return type if the function does not need to return
-            anything.
-          

-        

-        

-          

-            4.6.3. Minimize function calls when iterating by
-            using variables
-          

-          

-            Explanation:
-          

-          

-            It is easy to write the following code, and a clear argument can
-            be made that the code is easy to understand:
-          

-          

-            Example:
-          

-          
-            
-              
+          
+        

-
+            

+      

+
+      

+        
4.6.2. Always specify a
+        return type for a function.

+
+        
Explanation:

+
+        
The default return for a function is an int. To avoid ambiguity,
+        create a return for a function when the return has a purpose, and
+        create a void return type if the function does not need to return
+        anything.

+      

+
+      

+        
4.6.3. Minimize function
+        calls when iterating by using variables

+
+        
Explanation:

+
+        
It is easy to write the following code, and a clear argument can
+        be made that the code is easy to understand:

+
+        
Example:

+
+        
+          
+            
-            
-          

+              
 for (size_t cnt = 0; cnt < block_list_length(); cnt++)
 {
    ....
 }
 

-              

-          

-            Note:
-            Unfortunately, this makes a function call for each and every
-            iteration. This increases the overhead in the program, because
-            the compiler has to look up the function each time, call it, and
-            return a value. Depending on what occurs in the
-            block_list_length() call, it might even be creating and
-            destroying structures with each iteration, even though in each
-            case it is comparing "cnt" to the same value, over and over.
-            Remember too - even a call to block_list_length() is a function
-            call, with the same overhead.
-          

-          

-            Instead of using a function call during the iterations, assign
-            the value to a variable, and evaluate using the variable.
-          

-          

-            Example:
-          

-          
-            
-              
+          
+        

-
+            

+
+        
Note:
+        Unfortunately, this makes a function call for each and every
+        iteration. This increases the overhead in the program, because the
+        compiler has to look up the function each time, call it, and return a
+        value. Depending on what occurs in the block_list_length() call, it
+        might even be creating and destroying structures with each iteration,
+        even though in each case it is comparing "cnt" to the same value,
+        over and over. Remember too - even a call to block_list_length() is a
+        function call, with the same overhead.

+
+        
Instead of using a function call during the iterations, assign the
+        value to a variable, and evaluate using the variable.

+
+        
Example:

+
+        
+          
+            
-            
-          

+              
 size_t len = block_list_length();
 
 for (size_t cnt = 0; cnt < len; cnt++)
@@ -1023,161 +933,144 @@ for (size_t cnt = 0; cnt < len; cnt++)
    ....
 }
 

-              

-          

-            Exceptions:
-            if the value of block_list_length() *may* change or could
-            *potentially* change, then you must code the function call in the
-            for/while loop.
-          

-        

-        

-          

-            4.6.4. Pass and Return by Const Reference
-          

-          

-            Explanation:
-          

-          

-            This allows a developer to define a const pointer and call your
-            function. If your function does not have the const keyword, we
-            may not be able to use your function. Consider strcmp, if it were
-            defined as: extern int strcmp(char *s1, char *s2);
-          

-          

-            I could then not use it to compare argv's in main: int main(int
-            argc, const char *argv[]) { strcmp(argv[0], "privoxy"); }
-          

-          

-            Both these pointers are *const*! If the c runtime library
-            maintainers do it, we should too.
-          

-        

-        

-          

-            4.6.5. Pass and Return by Value
-          

-          

-            Explanation:
-          

-          

-            Most structures cannot fit onto a normal stack entry (i.e. they
-            are not 4 bytes or less). Aka, a function declaration like: int
-            load_aclfile(struct client_state csp)
-          

-          

-            would not work. So, to be consistent, we should declare all
-            prototypes with "pass by value": int load_aclfile(struct
-            client_state *csp)
-          

-        

-        

-          

-            4.6.6. Names of include files
-          

-          

-            Explanation:
-          

-          

-            Your include statements should contain the file name without a
-            path. The path should be listed in the Makefile, using -I as
-            processor directive to search the indicated paths. An exception
-            to this would be for some proprietary software that utilizes a
-            partial path to distinguish their header files from system or
-            other header files.
-          

-          

-            Example:
-          

-          
-            
-              
+          
+        

-
+            

+
+        
Exceptions:
+        if the value of block_list_length() *may* change or could
+        *potentially* change, then you must code the function call in the
+        for/while loop.

+      

+
+      

+        
4.6.4. Pass and Return by
+        Const Reference

+
+        
Explanation:

+
+        
This allows a developer to define a const pointer and call your
+        function. If your function does not have the const keyword, we may
+        not be able to use your function. Consider strcmp, if it were defined
+        as: extern int strcmp(char *s1, char *s2);

+
+        
I could then not use it to compare argv's in main: int main(int
+        argc, const char *argv[]) { strcmp(argv[0], "privoxy"); }

+
+        
Both these pointers are *const*! If the c runtime library
+        maintainers do it, we should too.

+      

+
+      

+        
4.6.5. Pass and Return by
+        Value

+
+        
Explanation:

+
+        
Most structures cannot fit onto a normal stack entry (i.e. they
+        are not 4 bytes or less). Aka, a function declaration like: int
+        load_aclfile(struct client_state csp)

+
+        
would not work. So, to be consistent, we should declare all
+        prototypes with "pass by value": int load_aclfile(struct client_state
+        *csp)

+      

+
+      

+        
4.6.6. Names of include
+        files

+
+        
Explanation:

+
+        
Your include statements should contain the file name without a
+        path. The path should be listed in the Makefile, using -I as
+        processor directive to search the indicated paths. An exception to
+        this would be for some proprietary software that utilizes a partial
+        path to distinguish their header files from system or other header
+        files.

+
+        
Example:

+
+        
+          
+            
-            
-          

+              
 #include <iostream.h>     /* This is not a local include */
 #include "config.h"       /* This IS a local include */
 

-              

-          

-            Exception:
-          

-          
-            
-              
+          
+        

-
+            

+
+        
Exception:

+
+        
+          
+            
-            
-          

+              
 /* This is not a local include, but requires a path element. */
 #include <sys/fileName.h>
 

-              

-
-          

-            Note:
-            Please! do not add "-I." to the Makefile without a _very_ good
-            reason. This duplicates the #include "file.h" behavior.
-          

-        

-        

-          

-            4.6.7. Provide multiple inclusion protection
-          

-          

-            Explanation:
-          

-          

-            Prevents compiler and linker errors resulting from redefinition
-            of items.
-          

-          

-            Wrap each header file with the following syntax to prevent
-            multiple inclusions of the file. Of course, replace PROJECT_H
-            with your file name, with "." Changed to "_", and make it
-            uppercase.
-          

-          

-            Example:
-          

-          
-            
-              
+          
+        

-
+            

+
+        
Note:
+        Please! do not add "-I." to the Makefile without a _very_ good
+        reason. This duplicates the #include "file.h" behavior.

+      

+
+      

+        
4.6.7. Provide multiple
+        inclusion protection

+
+        
Explanation:

+
+        
Prevents compiler and linker errors resulting from redefinition of
+        items.

+
+        
Wrap each header file with the following syntax to prevent
+        multiple inclusions of the file. Of course, replace PROJECT_H with
+        your file name, with "." Changed to "_", and make it uppercase.

+
+        
Example:

+
+        
+          
+            
-            
-          

+              
 #ifndef PROJECT_H_INCLUDED
 #define PROJECT_H_INCLUDED
  ...
 #endif /* ndef PROJECT_H_INCLUDED */
 

-              

-        

-        

-          

-            4.6.8. Use `extern "C"` when appropriate
-          

-          

-            Explanation:
-          

-          

-            If our headers are included from C++, they must declare our
-            functions as `extern "C"`. This has no cost in C, but increases
-            the potential re-usability of our code.
-          

-          

-            Example:
-          

-          
-            
-              
+          
+        

-
+            

+      

+
+      

+        
4.6.8. Use `extern "C"` when
+        appropriate

+
+        
Explanation:

+
+        
If our headers are included from C++, they must declare our
+        functions as `extern "C"`. This has no cost in C, but increases the
+        potential re-usability of our code.

+
+        
Example:

+
+        
+          
+            
-            
-          

+              
 #ifdef __cplusplus
 extern "C"
 {
@@ -1189,90 +1082,81 @@ extern "C"
 }
 #endif /* def __cplusplus */
 

-              

-        

-        

-          

-            4.6.9. Where Possible, Use Forward Struct
-            Declaration Instead of Includes
-          

-          

-            Explanation:
-          

-          

-            Useful in headers that include pointers to other struct's.
-            Modifications to excess header files may cause needless compiles.
-          

-          

-            Example:
-          

-          
-            
-              
+          
+        

-
+            

+      

+
+      

+        
4.6.9. Where Possible, Use
+        Forward Struct Declaration Instead of Includes

+
+        
Explanation:

+
+        
Useful in headers that include pointers to other struct's.
+        Modifications to excess header files may cause needless compiles.

+
+        
Example:

+
+        
+          
+            
-            
-          

+              
 /*********************************************************************
  * We're avoiding an include statement here!
  *********************************************************************/
 struct file_list;
 extern file_list *xyz;
 

-              

-          

-            Note: If
-            you declare "file_list xyz;" (without the pointer), then
-            including the proper header file is necessary. If you only want
-            to prototype a pointer, however, the header file is unnecessary.
-          

-          

-            Status: Use
-            with discretion.
-          

-        

+
+ +

Note: If you + declare "file_list xyz;" (without the pointer), then including the + proper header file is necessary. If you only want to prototype a + pointer, however, the header file is unnecessary.

+ +

Status: Use + with discretion.

+
+
+ +
+

4.7. General Coding + Practices

+ +
+

4.7.1. Turn on + warnings

+ +

Explanation

+ +

Compiler warnings are meant to help you find bugs. You should turn + on as many as possible. With GCC, the switch is "-Wall". Try and fix + as many warnings as possible.

-
-

- 4.7. General Coding Practices -

-
-

- 4.7.1. Turn on warnings -

-

- Explanation -

-

- Compiler warnings are meant to help you find bugs. You should - turn on as many as possible. With GCC, the switch is "-Wall". Try - and fix as many warnings as possible. -

-
-
-

- 4.7.2. Provide a default case for all switch - statements -

-

- Explanation: -

-

- What you think is guaranteed is never really guaranteed. The - value that you don't think you need to check is the one that - someday will be passed. So, to protect yourself from the unknown, - always have a default step in a switch statement. -

-

- Example: -

- - - + +
-
+
+      

+        
4.7.2. Provide a default
+        case for all switch statements

+
+        
Explanation:

+
+        
What you think is guaranteed is never really guaranteed. The value
+        that you don't think you need to check is the one that someday will
+        be passed. So, to protect yourself from the unknown, always have a
+        default step in a switch statement.

+
+        
Example:

+
+        
+          
+            
-            
-          

+              
 switch (hash_string(cmd))
 {
    case hash_actions_file:
@@ -1290,272 +1174,232 @@ switch (hash_string(cmd))
 
 } /* end switch (hash_string(cmd)) */
 

-              

-          

-            Note: If
-            you already have a default condition, you are obviously exempt
-            from this point. Of note, most of the WIN32 code calls
-            `DefWindowProc' after the switch statement. This API call
-            *should* be included in a default statement.
-          

-          

-            Another
-            Note: This is not so much a readability issue as a
-            robust programming issue. The "anomaly code goes here" may be no
-            more than a print to the STDERR stream (as in load_config). Or it
-            may really be an abort condition.
-          

-          

-            Status:
-            Programmer discretion is advised.
-          

-        

-        

-          

-            4.7.3. Try to avoid falling through cases in a
-            switch statement.
-          

-          

-            Explanation:
-          

-          

-            In general, you will want to have a 'break' statement within each
-            'case' of a switch statement. This allows for the code to be more
-            readable and understandable, and furthermore can prevent unwanted
-            surprises if someone else later gets creative and moves the code
-            around.
-          

-          

-            The language allows you to plan the fall through from one case
-            statement to another simply by omitting the break statement
-            within the case statement. This feature does have benefits, but
-            should only be used in rare cases. In general, use a break
-            statement for each case statement.
-          

-          

-            If you choose to allow fall through, you should comment both the
-            fact of the fall through and reason why you felt it was
-            necessary.
-          

-        

-        

-          

-            4.7.4. Don't mix size_t and other types
-          

-          

-            Explanation:
-          

-          

-            The type of size_t varies across platforms. Do not make
-            assumptions about whether it is signed or unsigned, or about how
-            long it is. Do not compare a size_t against another variable of a
-            different type (or even against a constant) without casting one
-            of the values.
-          

-        

-        

-          

-            4.7.5. Declare each variable and struct on its own
-            line.
-          

-          

-            Explanation:
-          

-          

-            It can be tempting to declare a series of variables all on one
-            line. Don't.
-          

-          

-            Example:
-          

-          
-            
-              
+          
+        

-
+            

+
+        
Note: If you
+        already have a default condition, you are obviously exempt from this
+        point. Of note, most of the WIN32 code calls `DefWindowProc' after
+        the switch statement. This API call *should* be included in a default
+        statement.

+
+        
Another
+        Note: This is not so much a readability issue as a robust
+        programming issue. The "anomaly code goes here" may be no more than a
+        print to the STDERR stream (as in load_config). Or it may really be
+        an abort condition.

+
+        
Status:
+        Programmer discretion is advised.

+      

+
+      

+        
4.7.3. Try to avoid falling
+        through cases in a switch statement.

+
+        
Explanation:

+
+        
In general, you will want to have a 'break' statement within each
+        'case' of a switch statement. This allows for the code to be more
+        readable and understandable, and furthermore can prevent unwanted
+        surprises if someone else later gets creative and moves the code
+        around.

+
+        
The language allows you to plan the fall through from one case
+        statement to another simply by omitting the break statement within
+        the case statement. This feature does have benefits, but should only
+        be used in rare cases. In general, use a break statement for each
+        case statement.

+
+        
If you choose to allow fall through, you should comment both the
+        fact of the fall through and reason why you felt it was
+        necessary.

+      

+
+      

+        
4.7.4. Don't mix size_t and
+        other types

+
+        
Explanation:

+
+        
The type of size_t varies across platforms. Do not make
+        assumptions about whether it is signed or unsigned, or about how long
+        it is. Do not compare a size_t against another variable of a
+        different type (or even against a constant) without casting one of
+        the values.

+      

+
+      

+        
4.7.5. Declare each variable
+        and struct on its own line.

+
+        
Explanation:

+
+        
It can be tempting to declare a series of variables all on one
+        line. Don't.

+
+        
Example:

+
+        
+          
+            
-            
-          

+              
 long a = 0;
 long b = 0;
 long c = 0;
 

-              

-          

-            Instead of:
-          

-          

-            long a, b, c;
-          

-          

-            Explanation: - there is more room for
-            comments on the individual variables - easier to add new
-            variables without messing up the original ones - when searching
-            on a variable to find its type, there is less clutter to
-            "visually" eliminate
-          

-          

-            Exceptions:
-            when you want to declare a bunch of loop variables or other
-            trivial variables; feel free to declare them on one line. You
-            should, although, provide a good comment on their functions.
-          

-          

-            Status:
-            developer-discretion.
-          

-        

-        

-          

-            4.7.6. Use malloc/zalloc sparingly
-          

-          

-            Explanation:
-          

-          

-            Create a local struct (on the stack) if the variable will live
-            and die within the context of one function call.
-          

-          

-            Only "malloc" a struct (on the heap) if the variable's life will
-            extend beyond the context of one function call.
-          

-          

-            Example:
-          

-          
-            
-              
+          
+        

-
+            

+
+        
Instead
+        of:

+
+        
long a, b, c;

+
+        
Explanation:
+        - there is more room for comments on the individual variables -
+        easier to add new variables without messing up the original ones -
+        when searching on a variable to find its type, there is less clutter
+        to "visually" eliminate

+
+        
Exceptions:
+        when you want to declare a bunch of loop variables or other trivial
+        variables; feel free to declare them on one line. You should,
+        although, provide a good comment on their functions.

+
+        
Status:
+        developer-discretion.

+      

+
+      

+        
4.7.6. Use malloc/zalloc
+        sparingly

+
+        
Explanation:

+
+        
Create a local struct (on the stack) if the variable will live and
+        die within the context of one function call.

+
+        
Only "malloc" a struct (on the heap) if the variable's life will
+        extend beyond the context of one function call.

+
+        
Example:

+
+        
+          
+            
-            
-          

+              
 If a function creates a struct and stores a pointer to it in a
 list, then it should definitely be allocated via `malloc'.
 

-              

-        

-        

-          

-            4.7.7. The Programmer Who Uses 'malloc' is
-            Responsible for Ensuring 'free'
-          

-          

-            Explanation:
-          

-          

-            If you have to "malloc" an instance, you are responsible for
-            insuring that the instance is `free'd, even if the deallocation
-            event falls within some other programmer's code. You are also
-            responsible for ensuring that deletion is timely (i.e. not too
-            soon, not too late). This is known as "low-coupling" and is a
-            "good thing (tm)". You may need to offer a free/unload/destructor
-            type function to accommodate this.
-          

-          

-            Example:
-          

-          
-            
-              
-            
-          

-
-int load_re_filterfile(struct client_state *csp) { ... }
-static void unload_re_filterfile(void *f) { ... }
-

-              

-          

-            Exceptions:
-          

-          

-            The developer cannot be expected to provide `free'ing functions
-            for C run-time library functions ... such as `strdup'.
-          

-          

-            Status:
-            developer-discretion. The "main" use of this standard is for
-            allocating and freeing data structures (complex or nested).
-          

-        

-        

-          

-            4.7.8. Add loaders to the `file_list' structure and
-            in order
-          

-          

-            Explanation:
-          

-          

-            I have ordered all of the "blocker" file code to be in alpha
-            order. It is easier to add/read new blockers when you expect a
-            certain order.
-          

-          

-            Note: It
-            may appear that the alpha order is broken in places by POPUP
-            tests coming before PCRS tests. But since POPUPs can also be
-            referred to as KILLPOPUPs, it is clear that it should come first.
-          

-        

-        

-          

-            4.7.9. "Uncertain" new code and/or changes to
-            existing code, use XXX
-          

-          

-            Explanation:
-          

-          

-            If you have enough confidence in new code or confidence in your
-            changes, but are not *quite* sure of the repercussions, add this:
-          

-          

-            /* XXX: this code has a logic error on platform XYZ, * attempting
-            to fix */ #ifdef PLATFORM ...changed code here... #endif
-          

-          

-            or:
-          

-          

-            /* XXX: I think the original author really meant this... */
-            ...changed code here...
-          

-          

-            or:
-          

-          

-            /* XXX: new code that *may* break something else... */ ...new
-            code here...
-          

-          

-            Note: If
-            you make it clear that this may or may not be a "good thing
-            (tm)", it will be easier to identify and include in the project
-            (or conversely exclude from the project).
-          

-        

+
-
-

- 4.8. Addendum: Template for files and function - comment blocks: -

-

- Example for file - comments: -

+ +
+

4.7.7. The Programmer Who + Uses 'malloc' is Responsible for Ensuring 'free'

+ +

Explanation:

+ +

If you have to "malloc" an instance, you are responsible for + insuring that the instance is `free'd, even if the deallocation event + falls within some other programmer's code. You are also responsible + for ensuring that deletion is timely (i.e. not too soon, not too + late). This is known as "low-coupling" and is a "good thing (tm)". + You may need to offer a free/unload/destructor type function to + accommodate this.

+ +

Example:

+ + +
-
+              
+int load_re_filterfile(struct client_state *csp) { ... }
+static void unload_re_filterfile(void *f) { ... }
+

+
+ +

Exceptions:

+ +

The developer cannot be expected to provide `free'ing functions + for C run-time library functions ... such as `strdup'.

+ +

Status: + developer-discretion. The "main" use of this standard is for + allocating and freeing data structures (complex or nested).

+
+ +
+

4.7.8. Add loaders to the + `file_list' structure and in order

+ +

Explanation:

+ +

I have ordered all of the "blocker" file code to be in alpha + order. It is easier to add/read new blockers when you expect a + certain order.

+ +

Note: It may + appear that the alpha order is broken in places by POPUP tests coming + before PCRS tests. But since POPUPs can also be referred to as + KILLPOPUPs, it is clear that it should come first.

+
+ +
+

4.7.9. "Uncertain" new code + and/or changes to existing code, use XXX

+ +

Explanation:

+ +

If you have enough confidence in new code or confidence in your + changes, but are not *quite* sure of the repercussions, add this:

+ +

/* XXX: this code has a logic error on platform XYZ, * attempting + to fix */ #ifdef PLATFORM ...changed code here... #endif

+ +

or:

+ +

/* XXX: I think the original author really meant this... */ + ...changed code here...

+ +

or:

+ +

/* XXX: new code that *may* break something else... */ ...new code + here...

+ +

Note: If you + make it clear that this may or may not be a "good thing (tm)", it + will be easier to identify and include in the project (or conversely + exclude from the project).

+
+
+ +
+

4.8. Addendum: Template for + files and function comment blocks:

+ +

Example for file + comments:

+ + + + - -
+ 
 const char FILENAME_rcs[] = "$I<!-- Break CVS Substitution -->d$";
 /*********************************************************************
  *
@@ -1594,31 +1438,29 @@ const char FILENAME_rcs[] = "$I<!-- Break CVS Substitution -->d$";
 
 const char FILENAME_h_rcs[] = FILENAME_H_VERSION;
-
-

- Note: This - declares the rcs variables that should be added to the - "show-proxy-args" page. If this is a brand new creation by you, you - are free to change the "Copyright" section to represent the rights - you wish to maintain. -

-

- Note: The - formfeed character that is present right after the comment flower - box is handy for (X|GNU)Emacs users to skip the verbiage and get to - the heart of the code (via `forward-page' and `backward-page'). - Please include it if you can. -

-

- Example for file header - comments: -

- - - + +
-
+
+ +

Note: This + declares the rcs variables that should be added to the + "show-proxy-args" page. If this is a brand new creation by you, you are + free to change the "Copyright" section to represent the rights you wish + to maintain.

+ +

Note: The + formfeed character that is present right after the comment flower box + is handy for (X|GNU)Emacs users to skip the verbiage and get to the + heart of the code (via `forward-page' and `backward-page'). Please + include it if you can.

+ +

Example for file header + comments:

+ + + + - -
+ 
 #ifndef _FILENAME_H
 #define _FILENAME_H
 #define FILENAME_H_VERSION "$I<!-- Break CVS Substitution -->d$"
@@ -1679,17 +1521,17 @@ extern const char FILENAME_h_rcs[];
   end:
 */
-
-

- Example for function - comments: -

- - - + +
-
+
+ +

Example for function + comments:

+ + + + - -
+ 
 /*********************************************************************
  *
  * Function    :  FUNCTION_NAME
@@ -1710,44 +1552,41 @@ int FUNCTION_NAME(void *param1, const char *x)
 
 }
-
-

- Note: If we - all follow this practice, we should be able to parse our code to - create a "self-documenting" web page. -

-
-
-
-
- - - - - - - - - -
- Prev - - Home - - Next -
- Documentation Guidelines - -   - - Testing Guidelines
+ +

Note: If we + all follow this practice, we should be able to parse our code to create + a "self-documenting" web page.

- - +
+ +
+
+ + + + + + + + + + + + + + + + +
PrevHomeNext
Documentation + Guidelines Testing Guidelines
+
+ + diff --git a/doc/webserver/developer-manual/cvs.html b/doc/webserver/developer-manual/cvs.html index 32624770..e6bd8d39 100644 --- a/doc/webserver/developer-manual/cvs.html +++ b/doc/webserver/developer-manual/cvs.html @@ -1,179 +1,159 @@ - + + - - - The CVS Repository - - - - - - - - - -
- - - - - - - - - -
- Privoxy Developer Manual -
- Prev - - - Next -
-
+ + The CVS Repository + + + + + + + + + +
+ + + + + + + + + + + + +
Privoxy Developer Manual
PrevNext
+
+
+ +
+

2. The CVS Repository

+ +

If you become part of the active development team, you will eventually + need write access to our holy grail, the CVS repository. One of the team + members will need to set this up for you. Please read this chapter + completely before accessing via CVS.

+ +
+

2.1. Access to + CVS

+ +

The project's CVS repository is hosted on SourceForge. For + historical reasons, the CVS server is called ijbswa.cvs.sourceforge.net, the repository is called + ijbswa, and the source tree module is called + current.

-
-

- 2. The CVS Repository -

-

- If you become part of the active development team, you will - eventually need write access to our holy grail, the CVS repository. - One of the team members will need to set this up for you. Please read - this chapter completely before accessing via CVS. -

-
-

- 2.1. Access to CVS -

-

- The project's CVS repository is hosted on SourceForge. For - historical reasons, the CVS server is called ijbswa.cvs.sourceforge.net, the repository is called - ijbswa, and the source tree module is - called current. -

-
-
-

- 2.2. Branches -

-

- Within the CVS repository, there are modules and branches. As - mentioned, the sources are in the current - "module". Other modules are present for - platform specific issues. There is a webview of the CVS hierarchy - at http://ijbswa.cvs.sourceforge.net/viewvc/ijbswa/, - which might help with visualizing how these pieces fit together. -

-

- At one time there were two distinct branches: stable and unstable. - The more drastic changes were to be in the unstable branch. These - branches have now been merged to minimize time and effort of - maintaining two branches. -

-
-
-

- 2.3. CVS Commit Guidelines -

-

- The source tree is the heart of every software project. Every - effort must be made to ensure that it is readable, compilable and - consistent at all times. We expect anyone with CVS access to - strictly adhere to the following guidelines: -

-

- Basic Guidelines, for all branches: -

-

-

-
    -
  • -

    - Please don't commit even a small change without testing it - thoroughly first. When we're close to a public release, ask a - fellow developer to review your changes. -

    -
    • -
  • -

    - Your commit message should give a concise overview of what you - changed (no big details) and why you changed it - Just check previous messages for good examples. -

    -
    • -
  • -

    - Don't use the same message on multiple files, unless it equally - applies to all those files. -

    -
    • -
  • -

    - If your changes span multiple files, and the code won't - recompile unless all changes are committed (e.g. when changing - the signature of a function), then commit all files one after - another, without long delays in between. If necessary, prepare - the commit messages in advance. -

    -
    • -
  • -

    - Before changing things on CVS, make sure that your changes are - in line with the team's general consensus on what should be - done. -

    -
    • -
  • -

    - Note that near a major public release, we get more cautious. - There is always the possibility to submit a patch to the patch tracker instead. -

    -
    • -
-
+ +
+

2.2. + Branches

+ +

Within the CVS repository, there are modules and branches. As + mentioned, the sources are in the current + "module". Other modules are present for + platform specific issues. There is a webview of the CVS hierarchy at + http://ijbswa.cvs.sourceforge.net/viewvc/ijbswa/, which + might help with visualizing how these pieces fit together.

+ +

At one time there were two distinct branches: stable and unstable. + The more drastic changes were to be in the unstable branch. These + branches have now been merged to minimize time and effort of + maintaining two branches.

-
-
- - - - - - - - - - - -
- Prev - - Home - - Next -
- Introduction - -   - - Documentation Guidelines -
+ +
+

2.3. CVS Commit + Guidelines

+ +

The source tree is the heart of every software project. Every effort + must be made to ensure that it is readable, compilable and consistent + at all times. We expect anyone with CVS access to strictly adhere to + the following guidelines:

+ +

Basic Guidelines, for all branches:

+ +
    +
  • +

    Please don't commit even a small change without testing it + thoroughly first. When we're close to a public release, ask a + fellow developer to review your changes.

    +
    • + +
  • +

    Your commit message should give a concise overview of + what you + changed (no big details) and why you changed it Just + check previous messages for good examples.

    +
    • + +
  • +

    Don't use the same message on multiple files, unless it equally + applies to all those files.

    +
    • + +
  • +

    If your changes span multiple files, and the code won't + recompile unless all changes are committed (e.g. when changing the + signature of a function), then commit all files one after another, + without long delays in between. If necessary, prepare the commit + messages in advance.

    +
    • + +
  • +

    Before changing things on CVS, make sure that your changes are + in line with the team's general consensus on what should be + done.

    +
    • + +
  • +

    Note that near a major public release, we get more cautious. + There is always the possibility to submit a patch to the patch tracker instead.

    +
    • +
- - +
+
+
+ + + + + + + + + + + + + + + + + +
PrevHomeNext
Introduction Documentation + Guidelines
+
+ + diff --git a/doc/webserver/developer-manual/documentation.html b/doc/webserver/developer-manual/documentation.html index 62c778e6..3f37a0f5 100644 --- a/doc/webserver/developer-manual/documentation.html +++ b/doc/webserver/developer-manual/documentation.html @@ -1,520 +1,451 @@ - + + - - - Documentation Guidelines - - - - - - - - - -
- - - - - - - - - + + Documentation Guidelines + + + + + + + + + +
+
- Privoxy Developer Manual -
- Prev - - - Next -
+ + + + + + + + + + + +
Privoxy Developer Manual
PrevNext
+
+
+ +
+

3. + Documentation Guidelines

+ +

All formal documents are maintained in Docbook SGML and located in the + doc/source/* directory. You will need + Docbook, the Docbook + DTD's and the Docbook modular stylesheets (or comparable alternatives), + and either jade or openjade (recommended) installed in order to build + docs from source. Currently there is user-manual, FAQ, and, + of course this, the developer-manual in this + format. The README, AUTHORS, INSTALL, privoxy.1 (man page), and config + files are also now maintained as Docbook SGML. These files, when built, + in the top-level source directory are generated files! Also, the + Privoxy index.html (and a variation on this file, privoxy-index.html, meant for inclusion with doc + packages), are maintained as SGML as well. DO NOT edit these directly. + Edit the SGML source, or contact someone involved in the + documentation.

+ +

config requires some special handling. The + reason it is maintained this way is so that the extensive comments in the + file mirror those in user-manual. But the + conversion process requires going from SGML to HTML to text to special + formatting required for the embedded comments. Some of this does not + survive so well. Especially some of the examples that are longer than 80 + characters. The build process for this file outputs to config.new, which should be reviewed for errors and + mis-formatting. Once satisfied that it is correct, then it should be hand + copied to config.

+ +

Other, less formal documents (e.g. LICENSE) + are maintained as plain text files in the top-level source directory.

+ +

Packagers are encouraged to include this documentation. For those + without the ability to build the docs locally, text versions of each are + kept in CVS. HTML versions are also being kept in CVS under doc/webserver/*.

+ +

Formal documents are built with the Makefile targets of make dok. The build process uses the document + SGML sources in doc/source/*/* to + update all text files in doc/text/ + and to update all HTML documents in doc/webserver/.

+ +

Documentation writers should please make sure documents build + successfully before committing to CVS, if possible.

+ +

How do you update the webserver (i.e. the pages on privoxy.org)?

+ +
    +
  1. +

    First, build the docs by running make + dok.

    +
    2. + +
  2. +

    Run make webserver which + copies all files from doc/webserver to the sourceforge webserver + via scp.

    +
    3. +
+ +

Finished docs should be occasionally submitted to CVS (doc/webserver/*/*.html) so that those without the ability + to build them locally, have access to them if needed. This is especially + important just prior to a new release! Please do this after the $VERSION and other release specific data in configure.in has been updated (this is done just prior to + a new release).

+ +
+

3.1. Quickstart to Docbook + and SGML

+ +

If you are not familiar with SGML, it is a markup language similar + to HTML. Actually, not a mark up language per se, but a language used + to define markup languages. In fact, HTML is an SGML application. Both + will use "tags" to format text and other + content. SGML tags can be much more varied, and flexible, but do much + of the same kinds of things. The tags, or "elements", are definable in SGML. There is no set + "standards". Since we are using Docbook, our tags are those that are defined by + Docbook. Much of how the finish + document is rendered is determined by the "stylesheets". The stylesheets determine how each tag + gets translated to HTML, or other formats.

+ +

Tags in Docbook SGML need to be always "closed". If not, you will likely generate errors. + Example: <title>My Title</title>. + They are also case-insensitive, but we strongly suggest using all lower + case. This keeps compatibility with [Docbook] XML.

+ +

Our documents use "sections" for the most + part. Sections will be processed into HTML headers (e.g. h1 for sect1). The Docbook stylesheets will use these to also + generate the Table of Contents for each doc. Our TOC's are set to a + depth of three. Meaning sect1, sect2, and sect3 will have TOC + entries, but sect4 will not. Each section + requires a <title> element, and at least + one <para>. There is a limit of five + section levels in Docbook, but generally three should be sufficient for + our purposes.

+ +

Some common elements that you likely will use:

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
<para></para>, paragraph + delimiter. Most text needs to be within paragraph elements (there + are some exceptions).
<emphasis></emphasis>, the + stylesheets make this italics.
<filename></filename>, files + and directories.
<command></command>, command + examples.
<literallayout></literallayout>, + like <pre>, more or less.
<itemizedlist></itemizedlist>, + list with bullets.
<listitem></listitem>, member + of the above.
<screen></screen>, screen + output, implies <literallayout>.
<ulink + url="example.com"></ulink>, like HTML + <a> tag.
<quote></quote>, for, doh, + quoting text.
-
+ +

Look at any of the existing docs for examples of all these and + more.

+ +

You might also find "Writing Documentation Using DocBook - A Crash Course" + useful.

-
-

- 3. Documentation Guidelines -

-

- All formal documents are maintained in Docbook SGML and located in - the doc/source/* directory. You - will need Docbook, - the Docbook DTD's and the Docbook modular stylesheets (or comparable - alternatives), and either jade or - openjade (recommended) installed in - order to build docs from source. Currently there is user-manual, FAQ, and, of course this, the developer-manual in this format. The README, AUTHORS, INSTALL, privoxy.1 (man - page), and config files are also now - maintained as Docbook SGML. These files, when built, in the top-level - source directory are generated files! Also, the Privoxy index.html - (and a variation on this file, privoxy-index.html, meant for inclusion with doc - packages), are maintained as SGML as well. DO NOT edit these directly. Edit the SGML - source, or contact someone involved in the documentation. -

-

- config requires some special handling. The - reason it is maintained this way is so that the extensive comments in - the file mirror those in user-manual. But - the conversion process requires going from SGML to HTML to text to - special formatting required for the embedded comments. Some of this - does not survive so well. Especially some of the examples that are - longer than 80 characters. The build process for this file outputs to - config.new, which should be reviewed for - errors and mis-formatting. Once satisfied that it is correct, then it - should be hand copied to config. -

-

- Other, less formal documents (e.g. LICENSE) - are maintained as plain text files in the top-level source directory. -

-

- Packagers are encouraged to include this documentation. For those - without the ability to build the docs locally, text versions of each - are kept in CVS. HTML versions are also being kept in CVS under doc/webserver/*. -

-

- Formal documents are built with the Makefile targets of make dok. The build process uses the document - SGML sources in doc/source/*/* to - update all text files in doc/text/ and to update all HTML documents in - doc/webserver/. -

-

- Documentation writers should please make sure documents build - successfully before committing to CVS, if possible. -

-

- How do you update the webserver (i.e. the pages on privoxy.org)? -

-
    + +
    +

    3.2. Privoxy Documentation Style

    + +

    It will be easier if everyone follows a similar writing style. This + just makes it easier to read what someone else has written if it is all + done in a similar fashion.

    + +

    Here it is:

    + +
      +
    • +

      All tags should be lower case.

      +
      • + +
    • +

      Tags delimiting a block of text (even small blocks) should be + on their own line. Like:

      + +

       <para>
      +   Some text goes here.
      +  </para>
      +        

      Tags marking + individual words, or few words, should be in-line: + +

      +   Just to <emphasis>emphasize</emphasis>, some text goes here.
      + +        

      +
      • + +
    • +

      Tags should be nested and step indented for block text like: + (except in-line tags)

      + +

       <para>
      +   <itemizedlist>
      +    <para>
      +     <listitem>
      +       Some text goes here in our list example.
      + +      </listitem>
      +    </para>
      +   </itemizedlist>
      +  </para>
      +        

      This makes it easier + to find the text amongst the tags ;-) +
      • + +
    • +

      Use white space to separate logical divisions within a document, + like between sections. Running everything together consistently + makes it harder to read and work on.

      +
      • + +
    • +

      Do not hesitate to make comments. Comments can either use the + <comment> element, or the <!-- --> style comment + familiar from HTML. (Note in Docbook v4.x <comment> is + replaced by <remark>.)

      +
      • + +
    • +

      We have an international audience. Refrain from slang, or + English idiosyncrasies (too many to list :). Humor also does not + translate well sometimes.

      +
      • + +
    • +

      Try to keep overall line lengths in source files to 80 + characters or less for obvious reasons. This is not always + possible, with lengthy URLs for instance.

      +
      • +
    • -

      - First, build the docs by running make dok. -

      +

      Our documents are available in differing formats. Right now, + they are just plain text and/or HTML, but others are always a + future possibility. Be careful with URLs (<ulink>), and avoid + this mistake:

      + +

      My favorite site is <ulink + url="http://example.com">here</ulink>.

      + +

      This will render as "My favorite site is + here", which is not real helpful in a text doc. Better like + this:

      + +

      My favorite site is <ulink + url="http://example.com">example.com</ulink>.

      • +
    • -

      - Run make webserver which - copies all files from doc/webserver to the sourceforge - webserver via scp. -

      +

      All documents should be spell checked occasionally. aspell can check SGML with the -H option. (ispell + I think too.)

      • -
- -

- Finished docs should be occasionally submitted to CVS (doc/webserver/*/*.html) so that those without the - ability to build them locally, have access to them if needed. This is - especially important just prior to a new release! Please do this - after the $VERSION and other release specific data in configure.in has been updated (this is done - just prior to a new release). -

-
-

- 3.1. Quickstart to Docbook and SGML -

-

- If you are not familiar with SGML, it is a markup language similar - to HTML. Actually, not a mark up language per se, but a language - used to define markup languages. In fact, HTML is an SGML - application. Both will use "tags" to - format text and other content. SGML tags can be much more varied, - and flexible, but do much of the same kinds of things. The tags, or - "elements", are definable in SGML. There - is no set "standards". Since we are - using Docbook, our tags are those - that are defined by Docbook. Much - of how the finish document is rendered is determined by the "stylesheets". The stylesheets determine how - each tag gets translated to HTML, or other formats. -

-

- Tags in Docbook SGML need to be always "closed". If not, you will likely generate errors. - Example: <title>My - Title</title>. They are also case-insensitive, but we - strongly suggest using all lower case. This keeps compatibility - with [Docbook] XML. -

-

- Our documents use "sections" for the - most part. Sections will be processed into HTML headers (e.g. h1 for sect1). The - Docbook stylesheets will use these - to also generate the Table of Contents for each doc. Our TOC's are - set to a depth of three. Meaning sect1, - sect2, and sect3 - will have TOC entries, but sect4 will not. - Each section requires a <title> - element, and at least one <para>. - There is a limit of five section levels in Docbook, but generally - three should be sufficient for our purposes. -

-

- Some common elements that you likely will use: -

-

-

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- <para></para>, paragraph - delimiter. Most text needs to be within paragraph elements - (there are some exceptions). -
- <emphasis></emphasis>, the - stylesheets make this italics. -
- <filename></filename>, - files and directories. -
- <command></command>, - command examples. -
- <literallayout></literallayout>, - like <pre>, more or less. -
- <itemizedlist></itemizedlist>, - list with bullets. -
- <listitem></listitem>, - member of the above. -
- <screen></screen>, screen - output, implies <literallayout>. -
- <ulink - url="example.com"></ulink>, like HTML <a> tag. -
- <quote></quote>, for, doh, - quoting text. -
- -

- Look at any of the existing docs for examples of all these and - more. -

-

- You might also find "Writing Documentation Using DocBook - A Crash - Course" useful. -

-
-
-

- 3.2. Privoxy - Documentation Style -

-

- It will be easier if everyone follows a similar writing style. This - just makes it easier to read what someone else has written if it is - all done in a similar fashion. -

-

- Here it is: -

-

-

-
    -
  • -

    - All tags should be lower case. -

    -
    • -
  • -

    - Tags delimiting a block of text (even small blocks) should - be on their own line. Like: -

    -

    -  <para>
    -   Some text goes here.
    -  </para>
    -         -

    - Tags marking individual words, or few words, should be in-line: -

    -   Just to <emphasis>emphasize</emphasis>, some text goes here.
    - -         -

    -
    • -
  • -

    - Tags should be nested and step indented for block text like: - (except in-line tags) -

    -

    -  <para>
    -   <itemizedlist>
    -    <para>
    -     <listitem>
    -       Some text goes here in our list example.
    - -      </listitem>
    -    </para>
    -   </itemizedlist>
    -  </para>
    -         -

    - This makes it easier to find the text amongst the tags ;-)
    -
    • -
  • -

    - Use white space to separate logical divisions within a - document, like between sections. Running everything together - consistently makes it harder to read and work on. -

    -
    • -
  • -

    - Do not hesitate to make comments. Comments can either use the - <comment> element, or the <!-- --> style comment - familiar from HTML. (Note in Docbook v4.x <comment> is - replaced by <remark>.) -

    -
    • -
  • -

    - We have an international audience. Refrain from slang, or - English idiosyncrasies (too many to list :). Humor also does - not translate well sometimes. -

    -
    • -
  • -

    - Try to keep overall line lengths in source files to 80 - characters or less for obvious reasons. This is not always - possible, with lengthy URLs for instance. -

    -
    • -
  • -

    - Our documents are available in differing formats. Right now, - they are just plain text and/or HTML, but others are always a - future possibility. Be careful with URLs (<ulink>), and - avoid this mistake: -

    -

    - My favorite site is <ulink - url="http://example.com">here</ulink>. -

    -

    - This will render as "My favorite site is - here", which is not real helpful in a text doc. Better - like this: -

    -

    - My favorite site is <ulink - url="http://example.com">example.com</ulink>. -

    -
    • -
  • -

    - All documents should be spell checked occasionally. aspell can check SGML with the -H option. (ispell I think too.) -

    -
    • -
-
-
-

- 3.3. Privoxy Custom Entities -

-

- Privoxy documentation is using a - number of customized "entities" to - facilitate documentation maintenance. -

-

- We are using a set of "boilerplate" - files with generic text, that is used by multiple docs. This way we - can write something once, and use it repeatedly without having to - re-write the same content over and over again. If editing such a - file, keep in mind that it should be generic. That is the purpose; so it can - be used in varying contexts without additional modifications. -

-

- We are also using what Docbook - calls "internal entities". These are - like variables in programming. Well, sort of. For instance, we have - the p-version entity that contains the - current Privoxy version string. - You are strongly encouraged to use these where possible. Some of - these obviously require re-setting with each release (done by the - Makefile). A sampling of custom entities are listed below. See any - of the main docs for examples. -

-

-

-
    -
  • -

    - Re- "boilerplate" text entities are - defined like: -

    -

    - <!entity supported SYSTEM - "supported.sgml"> -

    -

    - In this example, the contents of the file, supported.sgml is available for inclusion - anywhere in the doc. To make this happen, just reference the - now defined entity: &supported; - (starts with an ampersand and ends with a semi-colon), and the - contents will be dumped into the finished doc at that point. -

    -
    • -
  • -

    - Commonly used "internal entities": -

    - - - - - - - - - - - - - - - - - - -
    - p-version: the Privoxy version string, e.g. "3.0.26". -
    - p-status: the project status, - either "alpha", "beta", or "stable". -
    - p-not-stable: use to conditionally - include text in "not stable" - releases (e.g. "beta"). -
    - p-stable: just the opposite. -
    - p-text: this doc is only generated - as text. -
    -
    • -
- -

- There are others in various places that are defined for a specific - purpose. Read the source! -

-
+
-
-
- - - - - - - - - - - -
- Prev - - Home - - Next -
- The CVS Repository - -   - - Coding Guidelines -
+ +
+

3.3. Privoxy Custom + Entities

+ +

Privoxy documentation is using a + number of customized "entities" to + facilitate documentation maintenance.

+ +

We are using a set of "boilerplate" files + with generic text, that is used by multiple docs. This way we can write + something once, and use it repeatedly without having to re-write the + same content over and over again. If editing such a file, keep in mind + that it should be generic. That is the purpose; so it can be used + in varying contexts without additional modifications.

+ +

We are also using what Docbook + calls "internal entities". These are like + variables in programming. Well, sort of. For instance, we have the + p-version entity that contains the current + Privoxy version string. You are + strongly encouraged to use these where possible. Some of these + obviously require re-setting with each release (done by the Makefile). + A sampling of custom entities are listed below. See any of the main + docs for examples.

+ +
    +
  • +

    Re- "boilerplate" text entities are + defined like:

    + +

    <!entity supported SYSTEM + "supported.sgml">

    + +

    In this example, the contents of the file, supported.sgml is available for inclusion anywhere + in the doc. To make this happen, just reference the now defined + entity: &supported; (starts with an + ampersand and ends with a semi-colon), and the contents will be + dumped into the finished doc at that point.

    +
    • + +
  • +

    Commonly used "internal + entities":

    + + + + + + + + + + + + + + + + + + + + + + + +
    p-version: the Privoxy version string, e.g. + "3.0.26".
    p-status: the project status, either + "alpha", "beta", or "stable".
    p-not-stable: use to conditionally + include text in "not stable" + releases (e.g. "beta").
    p-stable: just the opposite.
    p-text: this doc is only generated as + text.
    +
    • +
+ +

There are others in various places that are defined for a specific + purpose. Read the source!

- - +
+ +
+
+ + + + + + + + + + + + + + + + +
PrevHomeNext
The CVS Repository Coding Guidelines
+
+ + diff --git a/doc/webserver/developer-manual/index.html b/doc/webserver/developer-manual/index.html index 530f85de..ff8fb75c 100644 --- a/doc/webserver/developer-manual/index.html +++ b/doc/webserver/developer-manual/index.html @@ -1,422 +1,342 @@ - + + - - - Privoxy Developer Manual - - - - - - - -
-
-

- Privoxy Developer Manual -

-

- Copyright © 2001-2016 by Privoxy - Developers
-

-

- $Id: developer-manual.sgml,v 2.72 2016/07/26 10:45:49 fabiankeil - Exp $
-

-
-
- -

- The developer manual provides guidance on coding, testing, - packaging, documentation and other issues of importance to - those involved with Privoxy - development. It is mandatory (and helpful!) reading for anyone - who wants to join the team. Note that it's currently out of - date and may not be entirely correct. As always, patches are - welcome. -

-

- Please note that this document is constantly evolving. This - copy represents the state at the release of version 3.0.26. You - can find the latest version of the this manual at https://www.privoxy.org/developer-manual/. Please - have a look at the contact section in the user manual if you are - interested in contacting the developers. -

-
+ + Privoxy Developer Manual + + + + + + + +
+
+

Privoxy Developer + Manual

+ +

Copyright © 2001-2016 by Privoxy + Developers

+ +

$Id: developer-manual.sgml,v 2.78 2016/08/25 + 19:53:28 ler762 Exp $

+ +
+
+ + +

The developer manual provides guidance on coding, testing, + packaging, documentation and other issues of importance to those + involved with Privoxy development. + It is mandatory (and helpful!) reading for anyone who wants to join + the team. Note that it's currently out of date and may not be + entirely correct. As always, patches are welcome.

+ +

Please note that this document is constantly evolving. This copy + represents the state at the release of version 3.0.26. You can find + the latest version of the this manual at https://www.privoxy.org/developer-manual/. Please have a + look at the contact section in the user manual if you are interested + in contacting the developers.

-
-
-
-
-
- Table of Contents -
-
- 1. Introduction -
-
-
-
- 1.1. Quickstart to - Privoxy Development -
-
-
-
- 2. The CVS Repository -
-
-
-
- 2.1. Access to CVS -
-
- 2.2. Branches -
-
- 2.3. CVS Commit Guidelines -
-
-
-
- 3. Documentation Guidelines -
-
-
-
- 3.1. Quickstart to Docbook - and SGML -
-
- 3.2. Privoxy Documentation Style -
-
- 3.3. Privoxy Custom - Entities -
-
-
-
- 4. Coding Guidelines -
-
-
-
- 4.1. Introduction -
-
- 4.2. Using Comments -
-
-
-
- 4.2.1. Comment, Comment, - Comment -
-
- 4.2.2. Use blocks for - comments -
-
- 4.2.3. Keep Comments on their - own line -
-
- 4.2.4. Comment each logical - step -
-
- 4.2.5. Comment All Functions - Thoroughly -
-
- 4.2.6. Comment at the end of - braces if the content is more than one screen length -
-
-
-
- 4.3. Naming Conventions -
-
-
-
- 4.3.1. Variable Names -
-
- 4.3.2. Function Names -
-
- 4.3.3. Header file - prototypes -
-
- 4.3.4. Enumerations, and - #defines -
-
- 4.3.5. Constants -
-
-
-
- 4.4. Using Space -
-
-
-
- 4.4.1. Put braces on a line by - themselves. -
-
- 4.4.2. ALL control statements - should have a block -
-
- 4.4.3. Do not belabor/blow-up - boolean expressions -
-
- 4.4.4. Use white space freely - because it is free -
-
- 4.4.5. Don't use white space - around structure operators -
-
- 4.4.6. Make the last brace of a - function stand out -
-
- 4.4.7. Use 3 character - indentions -
-
-
-
- 4.5. Initializing -
-
-
-
- 4.5.1. Initialize all - variables -
-
-
-
- 4.6. Functions -
-
-
-
- 4.6.1. Name functions that - return a boolean as a question. -
-
- 4.6.2. Always specify a return - type for a function. -
-
- 4.6.3. Minimize function calls - when iterating by using variables -
-
- 4.6.4. Pass and Return by Const - Reference -
-
- 4.6.5. Pass and Return by - Value -
-
- 4.6.6. Names of include - files -
-
- 4.6.7. Provide multiple - inclusion protection -
-
- 4.6.8. Use `extern "C"` when - appropriate -
-
- 4.6.9. Where Possible, Use - Forward Struct Declaration Instead of Includes -
-
-
-
- 4.7. General Coding Practices -
-
-
-
- 4.7.1. Turn on warnings -
-
- 4.7.2. Provide a default case - for all switch statements -
-
- 4.7.3. Try to avoid falling - through cases in a switch statement. -
-
- 4.7.4. Don't mix size_t and - other types -
-
- 4.7.5. Declare each variable - and struct on its own line. -
-
- 4.7.6. Use malloc/zalloc - sparingly -
-
- 4.7.7. The Programmer Who Uses - 'malloc' is Responsible for Ensuring 'free' -
-
- 4.7.8. Add loaders to the - `file_list' structure and in order -
-
- 4.7.9. "Uncertain" new code - and/or changes to existing code, use XXX -
-
-
-
- 4.8. Addendum: Template for files - and function comment blocks: -
-
-
-
- 5. Testing Guidelines -
-
-
-
- 5.1. Testplan for - releases -
-
-
-
- 6. Releasing a New Version -
-
-
-
- 6.1. Version - numbers -
-
- 6.2. Before the - Release: Freeze -
-
- 6.3. Building and - Releasing the Packages -
-
-
-
- 6.3.1. Note on - Privoxy Packaging -
-
- 6.3.2. Source Tarball -
-
- 6.3.3. SuSE, - Conectiva or Red Hat RPM -
-
- 6.3.4. OS/2 -
-
- 6.3.5. Solaris -
-
- 6.3.6. Windows -
-
- 6.3.7. Debian -
-
- 6.3.8. Mac OS - X -
-
- 6.3.9. FreeBSD -
-
-
-
- 6.4. Uploading and - Releasing Your Package -
-
- 6.5. After the - Release -
-
-
-
- 7. Update the Webserver -
-
+
-
-
- - - - - - - - - - - -
-   - -   - - Next -
-   - -   - - Introduction -
+ +
+
+
Table of Contents
+ +
1. Introduction
+ +
+
+
1.1. Quickstart to + Privoxy Development
+
+
+ +
2. The CVS Repository
+ +
+
+
2.1. Access to CVS
+ +
2.2. Branches
+ +
2.3. CVS Commit + Guidelines
+
+
+ +
3. Documentation Guidelines
+ +
+
+
3.1. Quickstart to Docbook + and SGML
+ +
3.2. Privoxy Documentation Style
+ +
3.3. Privoxy Custom + Entities
+
+
+ +
4. Coding Guidelines
+ +
+
+
4.1. Introduction
+ +
4.2. Using Comments
+ +
+
+
4.2.1. Comment, Comment, + Comment
+ +
4.2.2. Use blocks for + comments
+ +
4.2.3. Keep Comments on their + own line
+ +
4.2.4. Comment each logical + step
+ +
4.2.5. Comment All Functions + Thoroughly
+ +
4.2.6. Comment at the end of + braces if the content is more than one screen length
+
+
+ +
4.3. Naming Conventions
+ +
+
+
4.3.1. Variable Names
+ +
4.3.2. Function Names
+ +
4.3.3. Header file + prototypes
+ +
4.3.4. Enumerations, and + #defines
+ +
4.3.5. Constants
+
+
+ +
4.4. Using Space
+ +
+
+
4.4.1. Put braces on a line by + themselves.
+ +
4.4.2. ALL control statements + should have a block
+ +
4.4.3. Do not belabor/blow-up + boolean expressions
+ +
4.4.4. Use white space freely + because it is free
+ +
4.4.5. Don't use white space + around structure operators
+ +
4.4.6. Make the last brace of a + function stand out
+ +
4.4.7. Use 3 character + indentions
+
+
+ +
4.5. Initializing
+ +
+
+
4.5.1. Initialize all + variables
+
+
+ +
4.6. Functions
+ +
+
+
4.6.1. Name functions that + return a boolean as a question.
+ +
4.6.2. Always specify a return + type for a function.
+ +
4.6.3. Minimize function calls + when iterating by using variables
+ +
4.6.4. Pass and Return by Const + Reference
+ +
4.6.5. Pass and Return by + Value
+ +
4.6.6. Names of include + files
+ +
4.6.7. Provide multiple + inclusion protection
+ +
4.6.8. Use `extern "C"` when + appropriate
+ +
4.6.9. Where Possible, Use + Forward Struct Declaration Instead of Includes
+
+
+ +
4.7. General Coding + Practices
+ +
+
+
4.7.1. Turn on + warnings
+ +
4.7.2. Provide a default case + for all switch statements
+ +
4.7.3. Try to avoid falling + through cases in a switch statement.
+ +
4.7.4. Don't mix size_t and + other types
+ +
4.7.5. Declare each variable + and struct on its own line.
+ +
4.7.6. Use malloc/zalloc + sparingly
+ +
4.7.7. The Programmer Who Uses + 'malloc' is Responsible for Ensuring 'free'
+ +
4.7.8. Add loaders to the + `file_list' structure and in order
+ +
4.7.9. "Uncertain" new code + and/or changes to existing code, use XXX
+
+
+ +
4.8. Addendum: Template for files + and function comment blocks:
+
+
+ +
5. Testing Guidelines
+ +
+
+
5.1. Testplan for + releases
+
+
+ +
6. Releasing a New Version
+ +
+
+
6.1. Version + numbers
+ +
6.2. Before the + Release: Freeze
+ +
6.3. Building and + Releasing the Packages
+ +
+
+
6.3.1. Note on + Privoxy Packaging
+ +
6.3.2. Source Tarball
+ +
6.3.3. SuSE, + Conectiva or Red Hat RPM
+ +
6.3.4. OS/2
+ +
6.3.5. Solaris
+ +
6.3.6. Windows
+ +
6.3.7. Debian
+ +
6.3.8. Mac OS + X
+ +
6.3.9. FreeBSD
+
+
+ +
6.4. Uploading and + Releasing Your Package
+ +
6.5. After the + Release
+
+
+ +
7. Update the Webserver
+
- - +
+ +
+
+ + + + + + + + + + + + + + + + +
  Next
  Introduction
+
+ + diff --git a/doc/webserver/developer-manual/introduction.html b/doc/webserver/developer-manual/introduction.html index 82b90f73..95ff1c54 100644 --- a/doc/webserver/developer-manual/introduction.html +++ b/doc/webserver/developer-manual/introduction.html @@ -1,113 +1,104 @@ - + + - - - Introduction - - - - - - - - - -
- - - - - - - - - -
- Privoxy Developer Manual -
- Prev - - - Next -
-
-
-
-

- 1. Introduction -

-

- Privoxy, as an heir to Junkbuster, is a Free Software project and the - code is licensed under the GNU General Public License version 2. As - such, Privoxy development is - potentially open to anyone who has the time, knowledge, and desire to - contribute in any capacity. Our goals are simply to continue the - mission, to improve Privoxy, and to - make it available to as wide an audience as possible. -

-

- One does not have to be a programmer to contribute. Packaging, - testing, documenting and porting, are all important jobs as well. -

-
-

- 1.1. Quickstart to Privoxy Development -

-

- The first step is to join the privoxy-devel mailing list. You can submit your ideas, - or even better patches. Patches are best submitted to the - Sourceforge tracker set up for this purpose, but can be sent to the - list for review too. -

-

- You will also need to have a cvs package installed, which will - entail having ssh installed as well (which seems to be a - requirement of SourceForge), in order to access the cvs repository. - Having the GNU build tools is also going to be important - (particularly, autoconf and gmake). -

-

- For the time being (read, this section is under construction), you - can also refer to the extensive comments in the source code. In - fact, reading the code is recommended in any case. -

-
-
-
-
- - - - - - - - - - - -
- Prev - - Home - - Next -
- Privoxy Developer Manual - -   - - The CVS Repository -
+ + Introduction + + + + + + + + + +
+ + + + + + + + + + + + +
Privoxy Developer Manual
PrevNext
+
+
+ +
+

1. + Introduction

+ +

Privoxy, as an heir to Junkbuster, is a Free Software project and the code + is licensed under the GNU General Public License version 2. As such, + Privoxy development is potentially open + to anyone who has the time, knowledge, and desire to contribute in any + capacity. Our goals are simply to continue the mission, to improve + Privoxy, and to make it available to as + wide an audience as possible.

+ +

One does not have to be a programmer to contribute. Packaging, + testing, documenting and porting, are all important jobs as well.

+ +
+

1.1. Quickstart + to Privoxy Development

+ +

The first step is to join the privoxy-devel mailing list. You can submit your ideas, or + even better patches. Patches are best submitted to the Sourceforge + tracker set up for this purpose, but can be sent to the list for review + too.

+ +

You will also need to have a cvs package installed, which will + entail having ssh installed as well (which seems to be a requirement of + SourceForge), in order to access the cvs repository. Having the GNU + build tools is also going to be important (particularly, autoconf and + gmake).

+ +

For the time being (read, this section is under construction), you + can also refer to the extensive comments in the source code. In fact, + reading the code is recommended in any case.

- - +
+ +
+
+ + + + + + + + + + + + + + + + +
PrevHomeNext
Privoxy Developer + Manual The CVS Repository
+
+ + diff --git a/doc/webserver/developer-manual/newrelease.html b/doc/webserver/developer-manual/newrelease.html index 74981657..56d1dc7d 100644 --- a/doc/webserver/developer-manual/newrelease.html +++ b/doc/webserver/developer-manual/newrelease.html @@ -1,1190 +1,1070 @@ - + + - - - Releasing a New Version - - - - - - - - - -
- - - - + + Releasing a New Version + + + + + + + + + +
+
- Privoxy Developer Manual -
+ + + + + + + + + + + +
Privoxy Developer Manual
PrevNext
+
+
+ +
+

6. Releasing a New + Version

+ +

When we release versions of Privoxy, + our work leaves our cozy secret lab and has to work in the cold + RealWorld[tm]. Once it is released, there is no way to call it back, so + it is very important that great care is taken to ensure that everything + runs fine, and not to introduce problems in the very last minute.

+ +

So when releasing a new version, please adhere exactly to the + procedure outlined in this chapter.

+ +

The following programs are required to follow this process: ncftpput (ncftp), scp, ssh + (ssh), gmake (GNU's version of make), autoconf, + cvs.

+ +
+

6.1. + Version numbers

+ +

First you need to determine which version number the release will + have. Privoxy version numbers consist + of three numbers, separated by dots, like in X.Y.Z (e.g. 3.0.0), + where:

+ +
    +
  • +

    X, the version major, is rarely ever changed. It is increased by + one if turning a development branch into stable substantially + changes the functionality, user interface or configuration syntax. + Majors 1 and 2 were Junkbuster, + and 3 will be the first stable Privoxy release.

    +
    • + +
  • +

    Y, the version minor, represents the branch within the major + version. At any point in time, there are two branches being + maintained: The stable branch, with an even minor, say, 2N, in + which no functionality is being added and only bug-fixes are made, + and 2N+1, the development branch, in which the further development + of Privoxy takes place. This + enables us to turn the code upside down and inside out, while at + the same time providing and maintaining a stable version. The minor + is reset to zero (and one) when the major is incremented. When a + development branch has matured to the point where it can be turned + into stable, the old stable branch 2N is given up (i.e. no longer + maintained), the former development branch 2N+1 becomes the new + stable branch 2N+2, and a new development branch 2N+3 is + opened.

    +
    • + +
  • +

    Z, the point or sub version, represents a release of the + software within a branch. It is therefore incremented immediately + before each code freeze. In development branches, only the even + point versions correspond to actual releases, while the odd ones + denote the evolving state of the sources on CVS in between. It + follows that Z is odd on CVS in development branches most of the + time. There, it gets increased to an even number immediately before + a code freeze, and is increased to an odd number again immediately + thereafter. This ensures that builds from CVS snapshots are easily + distinguished from released versions. The point version is reset to + zero when the minor changes.

    + +

    Stable branches work a little differently, since there should be + little to no development happening in such branches. Remember, only + bugfixes, which presumably should have had some testing before + being committed. Stable branches will then have their version + reported as 0.0.0, during that period + between releases when changes are being added. This is to denote + that this code is not + for release. Then as the release nears, the version is + bumped according: e.g. 3.0.1 -> 0.0.0 -> + 3.0.2.

    +
    • +
+ +

In summary, the main CVS trunk is the development branch where new + features are being worked on for the next stable series. This should + almost always be where the most activity takes place. There is always + at least one stable branch from the trunk, e.g now it is 3.0, which is only used to release stable versions. Once + the initial *.0 release of the stable branch has been done, then as a + rule, only bugfixes that have had prior testing should be committed to + the stable branch. Once there are enough bugfixes to justify a new + release, the version of this branch is again incremented Example: 3.0.0 + -> 3.0.1 -> 3.0.2, etc are all stable releases from within the + stable branch. 3.1.x is currently the main trunk, and where work on + 3.2.x is taking place. If any questions, please post to the devel list + before committing + to a stable branch!

+ +

Developers should remember too that if they commit a bugfix to the + stable branch, this will more than likely require a separate submission + to the main trunk, since these are separate development trees within + CVS. If you are working on both, then this would require at least two + separate check outs (i.e main trunk, and the stable release branch, which is + v_3_0_branch at the moment).

+
+ +
+

6.2. + Before the Release: Freeze

+ +

The following must be + done by one of the developers prior to each new release.

+ +
    +
  • +

    Make sure that everybody who has worked on the code in the last + couple of days has had a chance to yell "no!" in case they have pending changes/fixes in + their pipelines. Announce the freeze so that nobody will interfere + with last minute changes.

    +
    • + +
  • +

    Increment the version number (point from odd to even in + development branches!) in configure.in. + (RPM spec files will need to be incremented as well.)

    +
    • + +
  • +

    Update the code status (CODE_STATUS="xxx") in configure.in to one of "alpha", "beta" or + "stable".

    +
    • + +
  • +

    If action file processing has changed and is not + backward-compatable, make sure the "for-privoxy-version=x.y.z" + minimum version number in default.action.master has been + updated:

    + + + + + +
    + 
    +{{settings}}
+#############################################################################
+#MASTER# COMMENT: The minimum Privoxy version:
+for-privoxy-version=3.0.11
+
    +
    +
    • + +
  • +

    Update the sgml documentation source files with the version + number

    + + + + + +
    + 
    +<!entity p-version "3.0.26">
+
    +
    and set the code status + + + + + +
    + 
    +<!entity p-status "stable">
+
    +
    to one of "alpha", "beta" or "stable" in + + + + + +
    + 
    +  current/doc/source/authors.sgml
+  current/doc/source/config.sgml
+  current/doc/source/developer-manual.sgml
+  current/doc/source/faq.sgml
+  current/doc/source/install.sgml
+  current/doc/source/privoxy-man-page.sgml
+  current/doc/source/readme.sgml
+  current/doc/source/user-manual.sgml
+and in
+  current/doc/source/webserver/index.sgml
+
    +
    +
    • + +
  • +

    All documentation should be rebuild after the version bump. + Finished docs should be then be committed to CVS (for those without + the ability to build these). Some docs may require rather obscure + processing tools. config, the man page + (and the html version of the man page) fall in this category. + REAMDE, the man page, AUTHORS, and config should all also be + committed to CVS for other packagers. The formal docs should be + uploaded to the webserver. See the Section "Updating the webserver" + in this manual for details.

    +
    • + +
  • +

    The User Manual is also used for + context sensitive help for the CGI editor. This is version + sensitive, so that the user will get appropriate help for his/her + release. So with each release a fresh version should be uploaded to + the webserver (this is in addition to the main User Manual link from the main page since we need + to keep manuals for various versions available). The CGI pages will + link to something like http://privoxy.org/$(VERSION)/user-manual/. This + will need to be updated for each new release. There is no Makefile + target for this at this time!!! It needs to be done manually.

    +
    • + +
  • +

    All developers should look at the ChangeLog and make sure noteworthy changes are + referenced.

    +
    • + +
  • +

    Commit all files that + were changed in the above steps!

    +
    • + +
  • +

    Tag all files in CVS with the version number with "cvs tag v_X_Y_Z". Don't use + vX_Y_Z, ver_X_Y_Z, v_X.Y.Z (won't work) etc.

    +
    • + +
  • +

    If the release was in a development branch, increase the point + version from even to odd (X.Y.(Z+1)) again in configure.in and commit your change.

    +
    • + +
  • +

    On the webserver, copy the user manual to a new top-level + directory called X.Y.Z. This ensures that + help links from the CGI pages, which have the version as a prefix, + will go into the right version of the manual. If this is a + development branch release, also symlink X.Y.(Z-1) to X.Y.Z and + X.Y.(Z+1) to . + (i.e. dot).

    +
    • +
+
+ +
+

6.3. Building + and Releasing the Packages

+ +

Now the individual packages can be built and released. Note that for + GPL reasons the first package to be released is always the source + tarball.

+ +

For all types + of packages, including the source tarball, you must make sure that you build from + clean sources by exporting the right version from CVS into an empty + directory (just press return when asked for a password):

+ + - - -
- Prev - - - Next + + 
+  mkdir dist # delete or choose different name if it already exists
+  cd dist
+  cvs -d:pserver:anonymous@ijbswa.cvs.sourceforge.net:/cvsroot/ijbswa login
+  cvs -z3 -d:pserver:anonymous@ijbswa.cvs.sourceforge.net:/cvsroot/ijbswa export -r v_X_Y_Z current
+
-
-
-
-

- 6. Releasing a New Version -

-

- When we release versions of Privoxy, - our work leaves our cozy secret lab and has to work in the cold - RealWorld[tm]. Once it is released, there is no way to call it back, - so it is very important that great care is taken to ensure that - everything runs fine, and not to introduce problems in the very last - minute. -

-

- So when releasing a new version, please adhere exactly to the - procedure outlined in this chapter. -

-

- The following programs are required to follow this process: ncftpput (ncftp), scp, - ssh (ssh), gmake (GNU's version of - make), autoconf, cvs. -

-
-

- 6.1. Version numbers -

-

- First you need to determine which version number the release will - have. Privoxy version numbers - consist of three numbers, separated by dots, like in X.Y.Z (e.g. - 3.0.0), where: -

-
    -
  • -

    - X, the version major, is rarely ever changed. It is increased - by one if turning a development branch into stable - substantially changes the functionality, user interface or - configuration syntax. Majors 1 and 2 were Junkbuster, and 3 will be the first stable - Privoxy release. -

    -
    • -
  • -

    - Y, the version minor, represents the branch within the major - version. At any point in time, there are two branches being - maintained: The stable branch, with an even minor, say, 2N, in - which no functionality is being added and only bug-fixes are - made, and 2N+1, the development branch, in which the further - development of Privoxy takes - place. This enables us to turn the code upside down and inside - out, while at the same time providing and maintaining a stable - version. The minor is reset to zero (and one) when the major is - incremented. When a development branch has matured to the point - where it can be turned into stable, the old stable branch 2N is - given up (i.e. no longer maintained), the former development - branch 2N+1 becomes the new stable branch 2N+2, and a new - development branch 2N+3 is opened. -

    -
    • -
  • -

    - Z, the point or sub version, represents a release of the - software within a branch. It is therefore incremented - immediately before each code freeze. In development branches, - only the even point versions correspond to actual releases, - while the odd ones denote the evolving state of the sources on - CVS in between. It follows that Z is odd on CVS in development - branches most of the time. There, it gets increased to an even - number immediately before a code freeze, and is increased to an - odd number again immediately thereafter. This ensures that - builds from CVS snapshots are easily distinguished from - released versions. The point version is reset to zero when the - minor changes. -

    -

    - Stable branches work a little differently, since there should - be little to no development happening in such branches. - Remember, only bugfixes, which presumably should have had some - testing before being committed. Stable branches will then have - their version reported as 0.0.0, - during that period between releases when changes are being - added. This is to denote that this code is not for release. Then - as the release nears, the version is bumped according: e.g. 3.0.1 -> 0.0.0 -> 3.0.2. -

    -
    • -
-

- In summary, the main CVS trunk is the development branch where new - features are being worked on for the next stable series. This - should almost always be where the most activity takes place. There - is always at least one stable branch from the trunk, e.g now it is - 3.0, which is only used to release stable - versions. Once the initial *.0 release of the stable branch has - been done, then as a rule, only bugfixes that have had prior - testing should be committed to the stable branch. Once there are - enough bugfixes to justify a new release, the version of this - branch is again incremented Example: 3.0.0 -> 3.0.1 -> 3.0.2, - etc are all stable releases from within the stable branch. 3.1.x is - currently the main trunk, and where work on 3.2.x is taking place. - If any questions, please post to the devel list before committing to a - stable branch! -

-

- Developers should remember too that if they commit a bugfix to the - stable branch, this will more than likely require a separate - submission to the main trunk, since these are separate development - trees within CVS. If you are working on both, then this would - require at least two separate check outs (i.e main trunk, and the stable - release branch, which is v_3_0_branch at - the moment). -

+

Do NOT change + a single bit, including, but not limited to version information after + export from CVS. This is to make sure that all release packages, and + with them, all future bug reports, are based on exactly the same + code.

+ +
+ + + + + + + + +
Warning
+

Every significant release of Privoxy has included at least + one package that either had incorrect versions of files, + missing files, or incidental leftovers from a previous build + process that gave unknown numbers of users headaches to try to + figure out what was wrong. PLEASE, make sure you are using + pristene sources, and are following the prescribed process!

+
-
-

- 6.2. Before the Release: Freeze -

-

- The following must be - done by one of the developers prior to each new release. -

-

-

+ +

Please find additional instructions for the source tarball and the + individual platform dependent binary packages below. And details on the + Sourceforge release process below that.

+ +
+

6.3.1. Note on Privoxy Packaging

+ +

Please keep these general guidelines in mind when putting together + your package. These apply to all platforms!

+
  • -

    - Make sure that everybody who has worked on the code in the last - couple of days has had a chance to yell "no!" in case they have pending changes/fixes in - their pipelines. Announce the freeze so that nobody will - interfere with last minute changes. -

    -
    • -
  • -

    - Increment the version number (point from odd to even in - development branches!) in configure.in. (RPM spec files will need to be - incremented as well.) -

    +

    Privoxy requires write access + to: all *.action files, all logfiles, + and the trust file. You will need to + determine the best way to do this for your platform.

    • +
  • -

    - If default.action has changed since - last release (i.e. software release or standalone actions file - release), bump up its version info to A.B in this line: -

    -

    -

    - - - - +

    Please include up to date documentation. At a bare + minimum:

    + +
    -
    -  {+add-header{X-Actions-File-Version: A.B} -filter -no-popups}
-
    -
    + + + + +
    LICENSE (top-level + directory)
    -

    - Then change the version info in - doc/webserver/actions/index.php, line: - '$required_actions_file_version = "A.B";' -

    -
    • -
  • -

    - All documentation should be rebuild after the version bump. - Finished docs should be then be committed to CVS (for those - without the ability to build these). Some docs may require - rather obscure processing tools. config, the man page (and the html version of - the man page) fall in this category. REAMDE, the man page, - AUTHORS, and config should all also be committed to CVS for - other packagers. The formal docs should be uploaded to the - webserver. See the Section "Updating the webserver" in this - manual for details. -

    -
    • -
  • -

    - The User Manual is also used for - context sensitive help for the CGI editor. This is version - sensitive, so that the user will get appropriate help for - his/her release. So with each release a fresh version should be - uploaded to the webserver (this is in addition to the main User Manual link from the main page since - we need to keep manuals for various versions available). The - CGI pages will link to something like http://privoxy.org/$(VERSION)/user-manual/. This - will need to be updated for each new release. There is no - Makefile target for this at this time!!! It needs to be done - manually. -

    -
    • -
  • -

    - All developers should look at the ChangeLog and make sure noteworthy changes are - referenced. -

    + + + + + + +
    README (top-level + directory)
    + + + + + + + +
    AUTHORS (top-level + directory)
    + + + + + + + +
    man page (top-level + directory, Unix-like platforms only)
    + + + + + + + +
    The User Manual + (doc/webserver/user-manual/)
    + + + + + + + +
    FAQ (doc/webserver/faq/)
    + +

    Also suggested: Developer Manual + (doc/webserver/developer-manual) and ChangeLog (top-level directory). FAQ and the manuals are HTML docs. There are also + text versions in doc/text/ which could + conceivably also be included.

    + +

    The documentation has been designed such that the manuals are + linked to each other from parallel directories, and should be + packaged that way. privoxy-index.html + can also be included and can serve as a focal point for docs and + other links of interest (and possibly renamed to index.html). This should be one level up from the + manuals. There is a link also on this page to an HTMLized version + of the man page. To avoid 404 for this, it is in CVS as + doc/webserver/man-page/privoxy-man-page.html, + and should be included along with the manuals. There is also a + css stylesheets that can be included for better presentation: + p_doc.css. This should be in the same + directory with privoxy-index.html, + (i.e. one level up from the manual directories).

    • +
  • -

    - Commit all files - that were changed in the above steps! -

    +

    user.action and user.filter are designed for local preferences. + Make sure these do not get overwritten! config should not be overwritten either. This has + especially important configuration data in it. trust should be left in tact as well.

    • +
  • -

    - Tag all files in CVS with the version number with "cvs tag v_X_Y_Z". Don't - use vX_Y_Z, ver_X_Y_Z, v_X.Y.Z (won't work) etc. -

    +

    Other configuration files (default.action and default.filter) should be installed as the new + defaults, but all previously installed configuration files should + be preserved as backups. This is just good manners :-) These + files are likely to change between releases and contain important + new features and bug fixes.

    • +
  • -

    - If the release was in a development branch, increase the point - version from even to odd (X.Y.(Z+1)) again in configure.in and commit your change. -

    +

    Please check platform specific notes in this doc, if you + haven't done "Privoxy" packaging + before for other platform specific issues. Conversely, please add + any notes that you know are important for your platform (or + contact one of the doc maintainers to do this if you can't).

    • +
  • -

    - On the webserver, copy the user manual to a new top-level - directory called X.Y.Z. This ensures - that help links from the CGI pages, which have the version as a - prefix, will go into the right version of the manual. If this - is a development branch release, also symlink X.Y.(Z-1) to X.Y.Z - and X.Y.(Z+1) to . (i.e. dot). -

    +

    Packagers should do a "clean" + install of their package after building it. So any previous + installs should be removed first to ensure the integrity of the + newly built package. Then run the package for a while to make + sure there are no obvious problems, before uploading.

-
-

- 6.3. Building and Releasing the Packages -

-

- Now the individual packages can be built and released. Note that - for GPL reasons the first package to be released is always the - source tarball. -

-

- For all types - of packages, including the source tarball, you must make sure that you build - from clean sources by exporting the right version from CVS into an - empty directory (just press return when asked for a - password): -

-

-

+ +
+

6.3.2. Source Tarball

+ +

First, make sure that + you have freshly exported the right version into an empty + directory. (See "Building and releasing packages" above). + Then run:

+
-
-  mkdir dist # delete or choose different name if it already exists
-  cd dist
-  cvs -d:pserver:anonymous@ijbswa.cvs.sourceforge.net:/cvsroot/ijbswa login
-  cvs -z3 -d:pserver:anonymous@ijbswa.cvs.sourceforge.net:/cvsroot/ijbswa export -r v_X_Y_Z current
+              
+  cd current
+  autoheader && autoconf && ./configure
-

- Do NOT change - a single bit, including, but not limited to version information - after export from CVS. This is to make sure that all release - packages, and with them, all future bug reports, are based on - exactly the same code. -

-
- - - - - - - -
- Warning -
-

- Every significant release of Privoxy has included at least - one package that either had incorrect versions of files, - missing files, or incidental leftovers from a previous - build process that gave unknown numbers of users headaches - to try to figure out what was wrong. PLEASE, make sure you - are using pristene sources, and are following the - prescribed process! -

-
-
-

- Please find additional instructions for the source tarball and the - individual platform dependent binary packages below. And details on - the Sourceforge release process below that. -

-
-

- 6.3.1. Note on Privoxy Packaging -

-

- Please keep these general guidelines in mind when putting - together your package. These apply to all platforms! -

-

-

-
    -
  • -

    - Privoxy requires write - access to: all *.action files, all - logfiles, and the trust file. You - will need to determine the best way to do this for your - platform. -

    -
    • -
  • -

    - Please include up to date documentation. At a bare minimum: -

    - - - - - - -
    - LICENSE (top-level directory) -
    - - - - - - -
    - README (top-level directory) -
    - - - - - - -
    - AUTHORS (top-level directory) -
    - - - - - - -
    - man page (top-level - directory, Unix-like platforms only) -
    - - - - - - -
    - The User Manual - (doc/webserver/user-manual/) -
    - - - - - - -
    - FAQ (doc/webserver/faq/) -
    -

    - Also suggested: Developer Manual - (doc/webserver/developer-manual) and ChangeLog (top-level directory). FAQ and the manuals are HTML docs. There are - also text versions in doc/text/ - which could conceivably also be included. -

    -

    - The documentation has been designed such that the manuals are - linked to each other from parallel directories, and should be - packaged that way. privoxy-index.html can also be included and - can serve as a focal point for docs and other links of - interest (and possibly renamed to index.html). This should be one level up from - the manuals. There is a link also on this page to an HTMLized - version of the man page. To avoid 404 for this, it is in CVS - as doc/webserver/man-page/privoxy-man-page.html, - and should be included along with the manuals. There is also - a css stylesheets that can be included for better - presentation: p_doc.css. This - should be in the same directory with privoxy-index.html, (i.e. one level up from - the manual directories). -

    -
    • -
  • -

    - user.action and user.filter are designed for local - preferences. Make sure these do not get overwritten! config should not be overwritten - either. This has especially important configuration data in - it. trust should be left in tact as - well. -

    -
    • -
  • -

    - Other configuration files (default.action and default.filter) should be installed as the - new defaults, but all previously installed configuration - files should be preserved as backups. This is just good - manners :-) These files are likely to change between releases - and contain important new features and bug fixes. -

    -
    • -
  • -

    - Please check platform specific notes in this doc, if you - haven't done "Privoxy" packaging - before for other platform specific issues. Conversely, please - add any notes that you know are important for your platform - (or contact one of the doc maintainers to do this if you - can't). -

    -
    • -
  • -

    - Packagers should do a "clean" - install of their package after building it. So any previous - installs should be removed first to ensure the integrity of - the newly built package. Then run the package for a while to - make sure there are no obvious problems, before uploading. -

    -
    • -
-
-
-

- 6.3.2. Source Tarball -

-

- First, make sure that - you have freshly exported the right version into an empty - directory. (See "Building and releasing packages" - above). Then run: -

-

-

- - - - -
-
-  cd current
-  autoheader && autoconf && ./configure
-
-
+

Then do:

-

- Then do: -

-

-

- - - + +
-
+        
+          
+            
-            
-          

+              
   make tarball-dist
 

-              

+
-

- To upload the package to Sourceforge, simply issue -

-

-

- - - + +
-
+        
To upload the package to Sourceforge, simply issue

+
+        
+          
+            
-            
-          

+              
   make tarball-upload
 

-              

+
-

- Go to the displayed URL and release the file publicly on - Sourceforge. For the change log field, use the relevant section - of the ChangeLog file. -

-
-
-

- 6.3.3. SuSE, Conectiva or Red Hat - RPM -

-

- In following text, replace dist with either "rh" for Red Hat or "suse" for SuSE. -

-

- First, make sure that - you have freshly exported the right version into an empty - directory. (See "Building and releasing packages" - above). -

-

- As the only exception to not changing anything after export from - CVS, now examine the file privoxy-dist.spec and make sure that the version information - and the RPM release number are correct. The RPM release numbers - for each version start at one. Hence it must be reset to one if - this is the first RPM for dist which is built from version X.Y.Z. - Check the file list if unsure. Else, it must be set to - the highest already available RPM release number for that version - plus one. -

-

- Then run: -

-

-

- - - + +
-
+        
Go to the displayed URL and release the file publicly on
+        Sourceforge. For the change log field, use the relevant section of
+        the ChangeLog file.

+      
+
+      

+        
6.3.3.
+        SuSE, Conectiva or Red Hat RPM

+
+        
In following text, replace dist with either "rh" for Red Hat or "suse"
+        for SuSE.

+
+        
First, make sure that
+        you have freshly exported the right version into an empty
+        directory. (See "Building and releasing packages"
+        above).

+
+        
As the only exception to not changing anything after export from
+        CVS, now examine the file privoxy-dist.spec
+        and make sure that the version information and the RPM release number
+        are correct. The RPM release numbers for each version start at one.
+        Hence it must be reset to one if this is the first RPM for dist which is built from version X.Y.Z.
+        Check the file list if unsure. Else, it must be set to the
+        highest already available RPM release number for that version plus
+        one.

+
+        
Then run:

+
+        
+          
+            
-            
-          

+              
   cd current
   autoheader && autoconf && ./configure
 

-              

+
-

- Then do -

-

-

- - - + +
-
+        
Then do

+
+        
+          
+            
-            
-          

+              
   make dist-dist
 

-              

+
-

- To upload the package to Sourceforge, simply issue -

-

-

- - - + +
-
+        
To upload the package to Sourceforge, simply issue

+
+        
+          
+            
-            
-          

+              
   make dist-upload rpm_packagerev
 

-              

+
-

- where rpm_packagerev is the - RPM release number as determined above. Go to the displayed URL - and release the file publicly on Sourceforge. Use the release - notes and change log from the source tarball package. -

-
-
-

- 6.3.4. OS/2 -

-

- First, make sure that - you have freshly exported the right version into an empty - directory. (See "Building and releasing packages" - above). Then get the OS/2 Setup module: -

-

-

- - - + +
-
+        
where rpm_packagerev is the
+        RPM release number as determined above. Go to the displayed URL and
+        release the file publicly on Sourceforge. Use the release notes and
+        change log from the source tarball package.

+      
+
+      

+        
6.3.4.
+        OS/2

+
+        
First, make sure that
+        you have freshly exported the right version into an empty
+        directory. (See "Building and releasing packages" above).
+        Then get the OS/2 Setup module:

+
+        
+          
+            
-            
-          

+              
   cvs -z3 -d:pserver:anonymous@ijbswa.cvs.sourceforge.net:/cvsroot/ijbswa co os2setup
 

-              

+
-

- You will need a mix of development tools. The main compilation - takes place with IBM Visual Age C++. Some ancillary work takes - place with GNU tools, available from various sources like - hobbes.nmsu.edu. Specificially, you will need autoheader, autoconf - and sh tools. The packaging takes place - with WarpIN, available from various sources, including its home - page: xworkplace. -

-

- Change directory to the os2setup - directory. Edit the os2build.cmd file to set the final executable - filename. For example, -

-

-

- - - + +
-
+        
You will need a mix of development tools. The main compilation
+        takes place with IBM Visual Age C++. Some ancillary work takes place
+        with GNU tools, available from various sources like hobbes.nmsu.edu.
+        Specificially, you will need autoheader,
+        autoconf and sh
+        tools. The packaging takes place with WarpIN, available from various
+        sources, including its home page: xworkplace.

+
+        
Change directory to the os2setup
+        directory. Edit the os2build.cmd file to set the final executable
+        filename. For example,

+
+        
+          
+            
-            
-          

+              
   installExeName='privoxyos2_setup_X.Y.Z.exe'
 

-              

+
-

- Next, edit the IJB.wis file so the - release number matches in the PACKAGEID - section: -

-

-

- - - + +
-
+        
Next, edit the IJB.wis file so the
+        release number matches in the PACKAGEID
+        section:

+
+        
+          
+            
-            
-          

+              
   PACKAGEID="Privoxy Team\Privoxy\Privoxy Package\X\Y\Z"
 

-              

+
-

- You're now ready to build. Run: -

-

-

- - - + +
-
+        
You're now ready to build. Run:

+
+        
+          
+            
-            
-          

+              
   os2build
 

-              

+
-

- You will find the WarpIN-installable executable in the ./files directory. Upload this anonymously to uploads.sourceforge.net/incoming, create a - release for it, and you're done. Use the release notes and Change - Log from the source tarball package. -

-
-
-

- 6.3.5. Solaris -

-

- Login to Sourceforge's compilefarm via ssh: -

-

-

- - - + +
-
+        
You will find the WarpIN-installable executable in the ./files directory. Upload this anonymously to
+        uploads.sourceforge.net/incoming, create a
+        release for it, and you're done. Use the release notes and Change Log
+        from the source tarball package.

+      
+
+      

+        
6.3.5. Solaris

+
+        
Login to Sourceforge's compilefarm via ssh:

+
+        
+          
+            
-            
-          

+              
   ssh cf.sourceforge.net
 

-              

+
-

- Choose the right operating system (not the Debian one). When - logged in, make sure - that you have freshly exported the right version into an empty - directory. (See "Building and releasing packages" - above). Then run: -

-

-

- - - + +
-
+        
Choose the right operating system (not the Debian one). When
+        logged in, make sure that
+        you have freshly exported the right version into an empty
+        directory. (See "Building and releasing packages" above).
+        Then run:

+
+        
+          
+            
-            
-          

+              
   cd current
   autoheader && autoconf && ./configure
 

-              

+
-

- Then run -

-

-

- - - + +
-
+        
Then run

+
+        
+          
+            
-            
-          

+              
   gmake solaris-dist
 

-              

+
-

- which creates a gzip'ed tar archive. Sadly, you cannot use make solaris-upload on the Sourceforge - machine (no ncftpput). You now have to manually upload the - archive to Sourceforge's ftp server and release the file - publicly. Use the release notes and Change Log from the source - tarball package. -

-
-
-

- 6.3.6. Windows -

-

- Use the Cygwin Time Machine to install the last 1.5 version of - Cygwin. Run the following commands from within the Cygwin 1.5 - bash shell. -

-

- First, make sure that - you have freshly exported the right version into an empty - directory. (See "Building and releasing packages" - above). Then get the Windows setup module: -

-

-

- - - + +
-
+        
which creates a gzip'ed tar archive. Sadly, you cannot use
+        make solaris-upload on the Sourceforge machine
+        (no ncftpput). You now have to manually upload the archive to
+        Sourceforge's ftp server and release the file publicly. Use the
+        release notes and Change Log from the source tarball package.

+      
+
+      

+        
6.3.6. Windows

+
+        
Use the Cygwin Time Machine to install the last 1.5 version of
+        Cygwin. Run the following commands from within the Cygwin 1.5 bash
+        shell.

+
+        
First, make sure that
+        you have freshly exported the right version into an empty
+        directory. (See "Building and releasing packages" above).
+        Then get the Windows setup module:

+
+        
+          
+            
-            
-          

+              
   cvs -z3  -d:pserver:anonymous@ijbswa.cvs.sourceforge.net:/cvsroot/ijbswa co winsetup
 

-              

+
+ +

Then you can build the package. This is fully automated, and is + controlled by winsetup/GNUmakefile. All you + need to do is:

+ + + + + +
+ 
+  cd winsetup
+  make
+
+
+ +

Now you can manually rename privoxy_setup.exe to privoxy_setup_X_Y_Z.exe, and upload it to + SourceForge. When releasing the package on SourceForge, use the + release notes and Change Log from the source tarball package.

+
+ +
+

6.3.7. Debian

+ +

First, make sure that + you have freshly exported the right version into an empty + directory. (See "Building and releasing packages" above). + Then add a log entry to debian/changelog, + if it is not already there, for example by running:

+ + + + + +
+ 
+  debchange -v 3.0.26-stable-1 "New upstream version"
+
+
+ +

Then, run:

+ + + + + +
+ 
+  dpkg-buildpackage -rfakeroot -us -uc -b
+
+
+ +

This will create ../privoxy_3.0.26-stable-1_i386.deb which can be + uploaded. To upload the package to Sourceforge, simply issue

+ + + + + +
+ 
+  make debian-upload
+
+
+
+ +
+

6.3.8. Mac OS X

+ +

First, make sure that + you have freshly exported the right version into an empty + directory. (See "Building and releasing packages" + above).

+ +

There are three modules available in the CVS repository for use on + Mac OS X, though technically only two of them generate a release (the + other can be used to install from source).

+ +
+

6.3.8.1. OSXPackageBuilder + module

+ +

The OSXPackageBuilder module generates OS X installer packages + supporting all Macs running OS X 10.4 and above. Obtain it from CVS + as follows into a folder parallel to the exported privoxy + source:

-

- Then you can build the package. This is fully automated, and is - controlled by winsetup/GNUmakefile. All - you need to do is: -

-

-

-
-  cd winsetup
-  make
+                
+  cvs -z3 -d:pserver:anonymous@ijbswa.cvs.sourceforge.net:/cvsroot/ijbswa co OSXPackageBuilder
-

- Now you can manually rename privoxy_setup.exe to privoxy_setup_X_Y_Z.exe, and upload it to - SourceForge. When releasing the package on SourceForge, use the - release notes and Change Log from the source tarball package. -

+

The module contains complete instructions on its usage in the + file OS X Package Builder HOWTO.txt.

+ +

Once the package(s) have been generated, you can then upload + them directly to the Files section of the Sourceforge project in + the Macintosh (OS X) folder. Each new version release of Privoxy + should have a new subfolder created in which to store its files. + Please ensure that the folder contains a readme file that makes it + clear which package is for whichversion of OS X.

-
-

- 6.3.7. Debian -

-

- First, make sure that - you have freshly exported the right version into an empty - directory. (See "Building and releasing packages" - above). Then add a log entry to debian/changelog, if it is not already there, for - example by running: -

-

-

+ +
+

6.3.8.2. osxsetup module + (DEPRECATED)

+ +

This module is + deprecated since the installer it generates places all Privoxy + files in one folder in a non-standard location, and supports only + Intel Macs running OS X 10.6 or higher.

+ +

Check out the module from CVS as follows into a folder parallel + to the exported privoxy source:

+
-
-  debchange -v 3.0.26-UNRELEASED-1 "New upstream version"
+                
+  cvs -z3 -d:pserver:anonymous@ijbswa.cvs.sourceforge.net:/cvsroot/ijbswa co osxsetup
-

- Then, run: -

-

-

+

Then run:

+
-
-  dpkg-buildpackage -rfakeroot -us -uc -b
+                
+  cd osxsetup
+  build
-

- This will create ../privoxy_3.0.26-UNRELEASED-1_i386.deb which can - be uploaded. To upload the package to Sourceforge, simply issue -

-

-

+

This will run autoheader, autoconf and configure as + well as make. Finally, it will copy over + the necessary files to the ./osxsetup/files directory for further + processing by PackageMaker.

+ +

Bring up PackageMaker with the PrivoxyPackage.pmsp definition + file, modify the package name to match the release, and hit the + "Create package" button. If you specify ./Privoxy.pkg as the output + package name, you can then create the distributable zip file with + the command:

+
-
-  make debian-upload
+                
+  zip -r privoxyosx_setup_x.y.z.zip Privoxy.pkg
+ +

You can then upload this file directly to the Files section of + the Sourceforge project in the Macintosh (OS X) folder. Each new + version release of Privoxy should have a new subfolder created in + which to store its files. Please ensure that the folder contains a + readme file that makes it clear which version(s) of OS X the + package supports.

-
-

- 6.3.8. Mac OS X -

-

- First, make sure that - you have freshly exported the right version into an empty - directory. (See "Building and releasing packages" - above). -

-

- There are three modules available in the CVS repository for use - on Mac OS X, though technically only two of them generate a - release (the other can be used to install from source). -

-
-

- 6.3.8.1. - OSXPackageBuilder module -

-

- The OSXPackageBuilder module generates OS X installer packages - supporting all Macs running OS X 10.4 and above. Obtain it from - CVS as follows into a folder parallel to the exported privoxy - source: -

- - - - -
-
-  cvs -z3 -d:pserver:anonymous@ijbswa.cvs.sourceforge.net:/cvsroot/ijbswa co OSXPackageBuilder
-
-
-

- The module contains complete instructions on its usage in the - file OS X Package Builder HOWTO.txt. -

-

- Once the package(s) have been generated, you can then upload - them directly to the Files section of the Sourceforge project - in the Macintosh (OS X) folder. Each new version release of - Privoxy should have a new subfolder created in which to store - its files. Please ensure that the folder contains a readme file - that makes it clear which package is for whichversion of OS X. -

-
-
-

- 6.3.8.2. osxsetup module - (DEPRECATED) -

-

- This module is - deprecated since the installer it generates places all Privoxy - files in one folder in a non-standard location, and supports - only Intel Macs running OS X 10.6 or higher. -

-

- Check out the module from CVS as follows into a folder parallel - to the exported privoxy source: -

- - - - -
-
-  cvs -z3 -d:pserver:anonymous@ijbswa.cvs.sourceforge.net:/cvsroot/ijbswa co osxsetup
-
-
+
+

6.3.8.3. macsetup module

-

- Then run: -

-

-

- - - - -
-
-  cd osxsetup
-  build
-
-
+

The macsetup module is ideal if you wish to build and install + Privoxy from source on a single machine.

-

- This will run autoheader, autoconf and configure as well as make. Finally, it will copy over the necessary - files to the ./osxsetup/files directory for further processing - by PackageMaker. -

-

- Bring up PackageMaker with the PrivoxyPackage.pmsp definition - file, modify the package name to match the release, and hit the - "Create package" button. If you specify ./Privoxy.pkg as the - output package name, you can then create the distributable zip - file with the command: -

-

-

- - - - -
-
-  zip -r privoxyosx_setup_x.y.z.zip Privoxy.pkg
-
-
+

Check out the module from CVS as follows into a folder parallel + to the exported privoxy source:

-

- You can then upload this file directly to the Files section of - the Sourceforge project in the Macintosh (OS X) folder. Each - new version release of Privoxy should have a new subfolder - created in which to store its files. Please ensure that the - folder contains a readme file that makes it clear which - version(s) of OS X the package supports. -

-
-
-

- 6.3.8.3. macsetup module -

-

- The macsetup module is ideal if you wish to build and install - Privoxy from source on a single machine. -

-

- Check out the module from CVS as follows into a folder parallel - to the exported privoxy source: -

- - - + +
-
+          
+            
+              
-              
-            

+                
   cvs -z3 -d:pserver:anonymous@ijbswa.cvs.sourceforge.net:/cvsroot/ijbswa co macsetup
 

-                

+
-

- The module contains complete instructions on its usage in its - README file. The end result will be - the exported version of Privoxy installed on the build machine. -

-
-
-
-

- 6.3.9. FreeBSD -

-

- Update the www/privoxy port and submit a diff upstream. For - details see the FreeBSD Porter's Handbook. -

+

The module contains complete instructions on its usage in its + README file. The end result will be the + exported version of Privoxy installed on the build machine.

-
-

- 6.4. Uploading and Releasing Your Package -

-

- After the package is ready, it is time to upload it to SourceForge, - and go through the release steps. The upload is done via FTP: -

-

-

- -

- Or use the make targets as described above. -

-

- Once this done go to https://sourceforge.net/project/admin/editpackages.php?group_id=11118, - making sure you are logged in. Find your target platform in the - second column, and click Add Release. You - will then need to create a new release for your package, using the - format of $VERSION ($CODE_STATUS), e.g. - 3.0.26 - (beta). -

-

- Now just follow the prompts. Be sure to add any appropriate Release - notes. You should see your freshly uploaded packages in "Step 2. Add Files To This Release". Check the - appropriate box(es). Remember at each step to hit the "Refresh/Submit" buttons! You should now see your - file(s) listed in Step 3. Fill out the forms with the appropriate - information for your platform, being sure to hit "Update" for each file. If anyone is monitoring your - platform, check the "email" box at the - very bottom to notify them of the new package. This should do it! -

-

- If you have made errors, or need to make changes, you can go - through essentially the same steps, but select Edit Release, instead of Add - Release. -

-
-
-

- 6.5. After the Release -

-

- When all (or: most of the) packages have been uploaded and made - available, send an email to the announce - mailing list, Subject: "Version X.Y.Z available for download". - Be sure to include the download location, the release notes and the - Changelog. Also, post an updated News item on the project page - Sourceforge, and update the Home page and docs linked from the Home - page (see below). Other news sites and release oriented sites, such - as Freshmeat, should also be notified. -

+
+

6.3.9. FreeBSD

+ +

Update the www/privoxy port and submit a diff upstream. For + details see the FreeBSD Porter's Handbook.

-
-
- - - - - - - - - - - -
- Prev - - Home - - Next -
- Testing Guidelines - -   - - Update the Webserver -
+ +
+

6.4. Uploading and + Releasing Your Package

+ +

After the package is ready, it is time to upload it to SourceForge, + and go through the release steps. The upload is done via FTP:

+ + + +

Or use the make targets as described + above.

+ +

Once this done go to https://sourceforge.net/project/admin/editpackages.php?group_id=11118, + making sure you are logged in. Find your target platform in the second + column, and click Add Release. You will then + need to create a new release for your package, using the format of + $VERSION ($CODE_STATUS), e.g. 3.0.26 (beta).

+ +

Now just follow the prompts. Be sure to add any appropriate Release + notes. You should see your freshly uploaded packages in "Step 2. Add Files To This Release". Check the + appropriate box(es). Remember at each step to hit the "Refresh/Submit" buttons! You should now see your + file(s) listed in Step 3. Fill out the forms with the appropriate + information for your platform, being sure to hit "Update" for each file. If anyone is monitoring your + platform, check the "email" box at the very + bottom to notify them of the new package. This should do it!

+ +

If you have made errors, or need to make changes, you can go through + essentially the same steps, but select Edit + Release, instead of Add Release.

- - +
+

6.5. After + the Release

+ +

When all (or: most of the) packages have been uploaded and made + available, send an email to the announce + mailing list, Subject: "Version X.Y.Z available for download". Be + sure to include the download location, the release notes and the Changelog. + Also, post an updated News item on the project page Sourceforge, and + update the Home page and docs linked from the Home page (see below). + Other news sites and release oriented sites, such as Freshmeat, should + also be notified.

+
+
+ +
+
+ + + + + + + + + + + + + + + + + +
PrevHomeNext
Testing Guidelines Update the Webserver
+
+ + diff --git a/doc/webserver/developer-manual/testing.html b/doc/webserver/developer-manual/testing.html index 9141d8a6..ed44d80c 100644 --- a/doc/webserver/developer-manual/testing.html +++ b/doc/webserver/developer-manual/testing.html @@ -1,148 +1,131 @@ - + + - - - Testing Guidelines - - - - - - - - - -
- - - - - - - - - -
- Privoxy Developer Manual -
- Prev - - - Next -
-
-
-
-

- 5. Testing Guidelines -

-

- To be filled. -

-
-

- 5.1. Testplan for releases -

-

- Explain release numbers. major, minor. developer releases. etc. -

-
    -
  1. -

    - Remove any existing rpm with rpm -e -

    -
    2. -
  2. -

    - Remove any file that was left over. This includes (but is not - limited to) -

    -
      -
    • -

      - /var/log/privoxy -

      -
      • -
    • -

      - /etc/privoxy -

      -
      • -
    • -

      - /usr/sbin/privoxy -

      -
      • -
    • -

      - /etc/init.d/privoxy -

      -
      • -
    • -

      - /usr/doc/privoxy* -

      -
      • -
    -
    3. -
  3. -

    - Install the rpm. Any error messages? -

    -
    4. -
  4. -

    - start,stop,status Privoxy with - the specific script (e.g. /etc/rc.d/init/privoxy stop). Reboot - your machine. Does autostart work? -

    -
    5. -
  5. -

    - Start browsing. Does Privoxy - work? Logfile written? -

    -
    6. -
  6. -

    - Remove the rpm. Any error messages? All files removed? -

    -
    7. -
-
-
-
-
- - - - - - - - - - - -
- Prev - - Home - - Next -
- Coding Guidelines - -   - - Releasing a New Version -
+ + Testing Guidelines + + + + + + + + + +
+ + + + + + + + + + + + +
Privoxy Developer Manual
PrevNext
+
+
+ +
+

5. Testing + Guidelines

+ +

To be filled.

+ +
+

5.1. + Testplan for releases

+ +

Explain release numbers. major, minor. developer releases. etc.

+ +
    +
  1. +

    Remove any existing rpm with rpm -e

    +
    2. + +
  2. +

    Remove any file that was left over. This includes (but is not + limited to)

    + +
      +
    • +

      /var/log/privoxy

      +
      • + +
    • +

      /etc/privoxy

      +
      • + +
    • +

      /usr/sbin/privoxy

      +
      • + +
    • +

      /etc/init.d/privoxy

      +
      • + +
    • +

      /usr/doc/privoxy*

      +
      • +
    +
    3. + +
  3. +

    Install the rpm. Any error messages?

    +
    4. + +
  4. +

    start,stop,status Privoxy with + the specific script (e.g. /etc/rc.d/init/privoxy stop). Reboot your + machine. Does autostart work?

    +
    5. + +
  5. +

    Start browsing. Does Privoxy + work? Logfile written?

    +
    6. + +
  6. +

    Remove the rpm. Any error messages? All files removed?

    +
    7. +
- - +
+
+
+ + + + + + + + + + + + + + + + + +
PrevHomeNext
Coding Guidelines Releasing a New + Version
+
+ + diff --git a/doc/webserver/developer-manual/webserver-update.html b/doc/webserver/developer-manual/webserver-update.html index 7cad7c93..0bae53a1 100644 --- a/doc/webserver/developer-manual/webserver-update.html +++ b/doc/webserver/developer-manual/webserver-update.html @@ -1,144 +1,126 @@ - + + - - - Update the Webserver - - - - - - - - -
- - - - - - - - - -
- Privoxy Developer Manual -
- Prev - - -   -
-
-
-
-

- 7. Update the Webserver -

-

- The webserver should be updated at least with each stable release. - When updating, please follow these steps to make sure that no broken - links, inconsistent contents or permission problems will occur (as it - has many times in the past!): -

-

- If you have changed anything in the stable-branch documentation - source SGML files, do: -

-

-

- - - + +
-
+
+  Update the Webserver
+  
+  
+  
+  
+  
+
+
+
+  

+    
+      
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
Privoxy Developer Manual
Prev 

+    

+  

+
+  

+    
7.
+    Update the Webserver

+
+    
The webserver should be updated at least with each stable release.
+    When updating, please follow these steps to make sure that no broken
+    links, inconsistent contents or permission problems will occur (as it has
+    many times in the past!):

+
+    
If you have changed anything in the stable-branch documentation source
+    SGML files, do:

+
+    
+      
+        
-        
-      

+          
   make dok
 

-          

-
-      

-        That will generate doc/webserver/user-manual, doc/webserver/developer-manual, doc/webserver/faq, doc/webserver/index.html automatically.
-      

-      

-        If you changed the manual page sources, generate doc/webserver/man-page/privoxy-man-page.html by
-        running "make man".
-        (This is a separate target due to dependencies on some obscure perl
-        scripts [now in CVS, but not well tested]. See comments in GNUmakefile.)
-      

-      

-        If you want to add new files to the webserver, create them locally in
-        the doc/webserver/* directory (or create
-        new directories under doc/webserver).
-      

-      

-        Next, commit any changes from the above steps to CVS. All set? If
-        these are docs in the stable branch, then do:
-      

-      

-      

-      
-        
-          
+      
+    

-
+        

+
+    
That will generate doc/webserver/user-manual, doc/webserver/developer-manual, doc/webserver/faq, doc/webserver/index.html automatically.

+
+    
If you changed the manual page sources, generate doc/webserver/man-page/privoxy-man-page.html by running
+    "make man". (This is a
+    separate target due to dependencies on some obscure perl scripts [now in
+    CVS, but not well tested]. See comments in GNUmakefile.)

+
+    
If you want to add new files to the webserver, create them locally in
+    the doc/webserver/* directory (or create new
+    directories under doc/webserver).

+
+    
Next, commit any changes from the above steps to CVS. All set? If
+    these are docs in the stable branch, then do:

+
+    
+      
+        
-        
-      

+          
   make webserver
 

-          

-
-      

-        This will do the upload to the webserver (www.privoxy.org) and ensure all files and
-        directories there are group writable.
-      

-      

-        Please do NOT
-        use any other means of transferring files to the webserver to avoid
-        permission problems. Also, please do not upload docs from development
-        branches or versions. The publicly posted docs should be in sync with
-        the last official release.
-      

-    

-    

-      

-      
-        
-          
-          
-          
-        
-        
-          
-          
-          
-        
-      

-            Prev
-          
-            Home
-          
-             
-          

-            Releasing a New Version
-          
-             
-          
-             
-          

-    

-  
-
+
+ +

This will do the upload to the webserver (www.privoxy.org) and ensure all files and + directories there are group writable.

+ +

Please do NOT + use any other means of transferring files to the webserver to avoid + permission problems. Also, please do not upload docs from development + branches or versions. The publicly posted docs should be in sync with the + last official release.

+
+ +
+
+ + + + + + + + + + + + + + + + +
PrevHome 
Releasing a New + Version  
+
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Privoxy Frequently Asked + Questions
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+
+
+ +
+

3. + Configuration

+ +
+

3.1. What + exactly is an "actions" file?

+ +

Privoxy utilizes the concept of + " actions" that are used to manipulate and control web + page data. Actions files are where these actions + that Privoxy could take while + processing a certain request, are configured. Typically, you would + define a set of default actions that apply globally to all URLs, then + add exceptions to these defaults where needed. There is a wide array of + actions available that give the user a high degree of control and + flexibility on how to process each and every web page.

+ +

Actions can be defined on a URL + pattern basis, i.e. for single URLs, whole web sites, groups or + parts thereof etc. Actions can also be grouped together and then + applied to requests matching one or more patterns. There are many + possible actions that might apply to any given site. As an example, if + you are blocking cookies as one of your default actions, but need to + accept cookies from a given site, you would need to define an exception + for this site in one of your actions files, preferably in user.action.

+
+ +
+

3.2. The + "actions" concept confuses me. Please list + some of these "actions".

+ +

For a comprehensive discussion of the actions concept, please refer + to the actions + file chapter in the User Manual. It includes a list of all + actions and an actions + file tutorial to get you started.

+
+ +
+

3.3. How are + actions files configured? What is the easiest way to do this?

+ +

Actions files are just text files in a special syntax and can be + edited with a text editor. But probably the easiest way is to access + Privoxy's user interface with your web + browser at http://config.privoxy.org/ (Shortcut: http://p.p/) and then select "View & change the current configuration" from the + menu. Note that this feature must be explicitly enabled in the main + config file (see enable-edit-actions).

+
+ +
+

3.4. There are several + different "actions" files. What are the + differences?

+ +

Please have a look at the the actions chapter in the User Manual for a + detailed explanation.

-
-

- 3. Configuration -

-
-

- 3.1. What exactly is an "actions" file? -

-

- Privoxy utilizes the concept of - " actions" that are used to manipulate and control - web page data. Actions files are where these actions that Privoxy - could take while processing a certain request, are configured. - Typically, you would define a set of default actions that apply - globally to all URLs, then add exceptions to these defaults where - needed. There is a wide array of actions available that give the - user a high degree of control and flexibility on how to process - each and every web page. -

-

- Actions can be defined on a URL - pattern basis, i.e. for single URLs, whole web sites, groups or - parts thereof etc. Actions can also be grouped together and then - applied to requests matching one or more patterns. There are many - possible actions that might apply to any given site. As an example, - if you are blocking cookies as one of your default actions, but need to - accept cookies from a given site, you would need to define an - exception for this site in one of your actions files, preferably in - user.action. -

-
-
-

- 3.2. The "actions" - concept confuses me. Please list some of these "actions". -

-

- For a comprehensive discussion of the actions concept, please refer - to the actions file chapter in the User Manual. It - includes a list of all actions and an actions file tutorial to get you started. -

-
-
-

- 3.3. How are actions files configured? What is - the easiest way to do this? -

-

- Actions files are just text files in a special syntax and can be - edited with a text editor. But probably the easiest way is to - access Privoxy's user interface - with your web browser at http://config.privoxy.org/ (Shortcut: http://p.p/) and then select "View & change the current - configuration" from the menu. Note that this feature - must be explicitly enabled in the main config file (see enable-edit-actions). -

-
-
-

- 3.4. There are several different "actions" files. What are the differences? -

-

- Please have a look at the the actions - chapter in the User Manual for a detailed explanation. -

-
-
-

- 3.5. Where can I get updated Actions - Files? -

-

- Based on your feedback and the continuing development, updates of - default.action will be made available - from time to time on the files section of our project - page. -

-

- If you wish to receive an email notification whenever we release - updates of Privoxy or the actions - file, subscribe to our announce mailing list, - privoxy-announce@lists.privoxy.org. -

-
-
-

- 3.6. Can I use my old config files? -

-

- The syntax and purpose of configuration files has remained roughly - the same throughout the 3.x series, but backwards compatibility is - not guaranteed. Also each release contains updated, "improved" versions and it is therefore strongly - recommended to install the newer configuration files and merge back - your modifications. -

-
-
-

- 3.7. Why is the configuration so - complicated? -

-

- "Complicated" is in the eye of the - beholder. -

-

- Privoxy is currently mainly written by and for people who are - already familiar with the underlying concepts like regular - expressions, HTTP and HTML, or are willing to become familiar with - them to be able to get the most out of a powerful and flexible tool - such as Privoxy. -

-

- While everybody is expected to be able to get a Privoxy default - installation up and running, fine-tuning requires a certain amount - of background information and Privoxy's documentation mainly - concentrates on the Privoxy-specific parts while only providing - references to the rest. -

-

- If you or anyone you know has the skills, time and energy to reduce - the barrier of entry, please get - involved. -

-
-
-

- 3.8. How can I make my Yahoo/Hotmail/Gmail account - work? -

-

- The default configuration shouldn't impact the usability of any of - these services. It may, however, make all cookies temporary, so that your browser will forget your - login credentials in between browser sessions. If you would like - not to have to log in manually each time you access those websites, - simply turn off all cookie handling for them in the user.action file. An example for yahoo might look - like: -

-

-

- - -
-
+
+    

+      
3.5. Where can I
+      get updated Actions Files?

+
+      
Based on your feedback and the continuing development, updates of
+      default.action will be made available from
+      time to time on the files section of our project
+      page.

+
+      
If you wish to receive an email notification whenever we release
+      updates of Privoxy or the actions
+      file, subscribe to our announce mailing list,
+      privoxy-announce@lists.privoxy.org.

+    

+
+    

+      
3.6. Can I use my
+      old config files?

+
+      
The syntax and purpose of configuration files has remained roughly
+      the same throughout the 3.x series, but backwards compatibility is not
+      guaranteed. Also each release contains updated, "improved" versions and it is therefore strongly
+      recommended to install the newer configuration files and merge back
+      your modifications.

+    

+
+    

+      
3.7. Why is the
+      configuration so complicated?

+
+      
"Complicated" is in the eye of the
+      beholder.

+
+      
Privoxy is currently mainly written by and for people who are
+      already familiar with the underlying concepts like regular expressions,
+      HTTP and HTML, or are willing to become familiar with them to be able
+      to get the most out of a powerful and flexible tool such as
+      Privoxy.

+
+      
While everybody is expected to be able to get a Privoxy default
+      installation up and running, fine-tuning requires a certain amount of
+      background information and Privoxy's documentation mainly concentrates
+      on the Privoxy-specific parts while only providing references to the
+      rest.

+
+      
If you or anyone you know has the skills, time and energy to reduce
+      the barrier of entry, please get
+      involved.

+    

+
+    

+      
3.8. How can I make my
+      Yahoo/Hotmail/Gmail account work?

+
+      
The default configuration shouldn't impact the usability of any of
+      these services. It may, however, make all cookies
+      temporary, so that your browser will forget your login credentials in
+      between browser sessions. If you would like not to have to log in
+      manually each time you access those websites, simply turn off all
+      cookie handling for them in the user.action
+      file. An example for yahoo might look like:

+
+      
+        
+          
-          
-        

+            
 # Allow all cookies for Yahoo login:
 #
 { -
 "_top">session-cookies-only }
 .login.yahoo.com
 

-            

-
-        

-          These kinds of sites are often quite complex and heavy with Javascript and thus "fragile". So if still a problem, we have an alias
-          just for such sticky situations:
-        

-        

-        

-        
-          
-            
+        
+      

-
+          

+
+      
These kinds of sites are often quite complex and heavy with Javascript
+      and thus "fragile". So if still a problem, we have an
+      alias just for such sticky situations:

+
+      
+        
+          
-          
-        

+            
 # Gmail is a _fragile_ site:
 #
 { fragile }
  # Gmail is ...
  mail.google.com
 

-            

-
-        

-          Be sure to flush your browser's caches whenever making these kinds
-          of changes, just to make sure the changes "take".
-        

-        

-          Make sure the domain, host and path are appropriate as well. Your
-          browser can tell you where you are specifically and you should use
-          that information for your configuration settings. Note that above
-          it is not referenced as gmail.com, which
-          is a valid domain name.
-        

-      

-      

-        

-          3.9. What's the difference between the "Cautious", "Medium" and "Advanced"
-          defaults?
-        

-        

-          Configuring Privoxy is not
-          entirely trivial. To help you get started, we provide you with
-          three different default action "profiles" in the web based actions file editor at
-          http://config.privoxy.org/show-status. See the User Manual for a list of actions, and how the
-          default profiles are set.
-        

-        

-          Where the defaults are likely to break some sites, exceptions for
-          known popular "problem" sites are
-          included, but in general, the more aggressive your default settings
-          are, the more exceptions you will have to make later. New users are
-          best to start off in "Cautious" setting.
-          This is safest and will have the fewest problems. See the User
-          Manual for a more detailed discussion.
-        

-        

-          It should be noted that the "Advanced"
-          profile (formerly known as the "Adventuresome" profile) is more aggressive, and
-          will make use of some of Privoxy's
-          advanced features. Use at your own risk!
-        

-      

-      

-        

-          3.10. Why can I change the configuration
-          with a browser? Does that not raise security issues?
-        

-        

-          It may seem strange that regular users can edit the config files
-          with their browsers, although the whole /etc/privoxy hierarchy belongs to the user "privoxy", with only 644 permissions.
-        

-        

-          When you use the browser-based editor, Privoxy itself is writing to the config files.
-          Because Privoxy is running as the
-          user "privoxy", it can update its own
-          config files.
-        

-        

-          If you run Privoxy for multiple
-          untrusted users (e.g. in a LAN) or aren't entirely in control of
-          your own browser, you will probably want to make sure that the
-          web-based editor and remote toggle features are "off" by setting "enable-edit-actions 0" and "enable-remote-toggle 0" in the main configuration
-          file.
-        

-        

-          As of Privoxy 3.0.7 these options
-          are disabled by default.
-        

-      

-      

-        

-          3.11. What is the default.filter file? What is a "filter"?
-        

-        

-          The default.filter file is where filters as supplied by
-          the developers are defined. Filters are a special subset of actions
-          that can be used to modify or remove web page content or headers on
-          the fly. Content filters can be applied to anything in the page
-          source, header filters can be applied to either server or client
-          headers. Regular expressions are used to accomplish this.
-        

-        

-          There are a number of pre-defined filters to deal with common
-          annoyances. The filters are only defined here, to invoke them, you
-          need to use the filter action in one of
-          the actions files. Content filtering is automatically disabled for
-          inappropriate MIME types, but if you know better than Privoxy what
-          should or should not be filtered you can filter any content you
-          like.
-        

-        

-          Filters should not be confused with blocks, which is a completely different action,
-          and is more typically used to block ads and unwanted sites.
-        

-        

-          If you are familiar with regular expressions, and HTML, you can
-          look at the provided default.filter with
-          a text editor and define your own filters. This is potentially a
-          very powerful feature, but requires some expertise in both regular
-          expressions and HTML/HTTP. You should place any modifications to
-          the default filters, or any new ones you create in a separate file,
-          such as user.filter, so they won't be
-          overwritten during upgrades. The ability to define multiple filter
-          files in config is a new feature as of v.
-          3.0.5.
-        

-        

-          There is no GUI editor option for this part of the configuration,
-          but you can disable/enable the various pre-defined filters of the
-          included default.filter file with the web-based actions file editor. Note that the custom
-          actions editor must be explicitly enabled in the main config file
-          (see enable-edit-actions).
-        

-        

-          If you intend to develop your own filters, you might want to have a
-          look at Privoxy-Filter-Test.
-        

-      

-      

-        

-          3.12. How can I set up Privoxy to act as a
-          proxy for my LAN?
-        

-        

-          By default, Privoxy only responds
-          to requests from 127.0.0.1 (localhost). To
-          have it act as a server for a network, this needs to be changed in
-          the main
-          configuration file. Look for the listen-address option, which may be commented out
-          with a "#" symbol. Make sure it is
-          uncommented, and assign it the address of the LAN gateway
-          interface, and port number to use. Assuming your LAN address is
-          192.168.1.1 and you wish to run Privoxy on port 8118, this line should look
-          like:
-        

-        

-        

-        
-          
-            
+        
+      

-
+          

+
+      
Be sure to flush your browser's caches whenever making these kinds
+      of changes, just to make sure the changes "take".

+
+      
Make sure the domain, host and path are appropriate as well. Your
+      browser can tell you where you are specifically and you should use that
+      information for your configuration settings. Note that above it is not
+      referenced as gmail.com, which is a valid
+      domain name.

+    

+
+    

+      
3.9. What's
+      the difference between the "Cautious",
+      "Medium" and "Advanced" defaults?

+
+      
Configuring Privoxy is not entirely
+      trivial. To help you get started, we provide you with three different
+      default action "profiles" in the web based
+      actions file editor at http://config.privoxy.org/show-status. See the
+      User Manual for a list of actions, and how the
+      default profiles are set.

+
+      
Where the defaults are likely to break some sites, exceptions for
+      known popular "problem" sites are included,
+      but in general, the more aggressive your default settings are, the more
+      exceptions you will have to make later. New users are best to start off
+      in "Cautious" setting. This is safest and
+      will have the fewest problems. See the User
+      Manual for a more detailed discussion.

+
+      
It should be noted that the "Advanced"
+      profile (formerly known as the "Adventuresome" profile) is more aggressive, and will
+      make use of some of Privoxy's advanced
+      features. Use at your own risk!

+    

+
+    

+      
3.10. Why
+      can I change the configuration with a browser? Does that not raise
+      security issues?

+
+      
It may seem strange that regular users can edit the config files
+      with their browsers, although the whole /etc/privoxy hierarchy belongs to the user "privoxy", with only 644 permissions.

+
+      
When you use the browser-based editor, Privoxy itself is writing to the config files.
+      Because Privoxy is running as the user
+      "privoxy", it can update its own config
+      files.

+
+      
If you run Privoxy for multiple
+      untrusted users (e.g. in a LAN) or aren't entirely in control of your
+      own browser, you will probably want to make sure that the web-based
+      editor and remote toggle features are "off"
+      by setting "enable-edit-actions 0" and "enable-remote-toggle 0" in the main configuration
+      file.

+
+      
As of Privoxy 3.0.7 these options
+      are disabled by default.

+    

+
+    

+      
3.11. What is
+      the default.filter file? What is a
+      "filter"?

+
+      
The default.filter file is where
+      filters as
+      supplied by the developers are defined. Filters are a special subset of
+      actions that can be used to modify or remove web page content or
+      headers on the fly. Content filters can be applied to anything in the page source,
+      header filters can be applied to either server or client headers.
+      Regular expressions are used to accomplish this.

+
+      
There are a number of pre-defined filters to deal with common
+      annoyances. The filters are only defined here, to invoke them, you need
+      to use the filter action in one of the actions
+      files. Content filtering is automatically disabled for inappropriate
+      MIME types, but if you know better than Privoxy what should or should
+      not be filtered you can filter any content you like.

+
+      
Filters should not be confused with blocks, which is a completely different action, and
+      is more typically used to block ads and unwanted sites.

+
+      
If you are familiar with regular expressions, and HTML, you can look
+      at the provided default.filter with a text
+      editor and define your own filters. This is potentially a very powerful
+      feature, but requires some expertise in both regular expressions and
+      HTML/HTTP. You should place any modifications to the default filters,
+      or any new ones you create in a separate file, such as user.filter, so they won't be overwritten during
+      upgrades. The ability to define multiple filter files in config is a new feature as of v. 3.0.5.

+
+      
There is no GUI editor option for this part of the configuration,
+      but you can disable/enable the various pre-defined filters of the
+      included default.filter file with the
+      web-based
+      actions file editor. Note that the custom actions editor must be
+      explicitly enabled in the main config file (see enable-edit-actions).

+
+      
If you intend to develop your own filters, you might want to have a
+      look at Privoxy-Filter-Test.

+    

+
+    

+      
3.12. How can I
+      set up Privoxy to act as a proxy for my LAN?

+
+      
By default, Privoxy only responds
+      to requests from 127.0.0.1 (localhost). To
+      have it act as a server for a network, this needs to be changed in the
+      main configuration
+      file. Look for the listen-address option, which may be commented out with
+      a "#" symbol. Make sure it is uncommented,
+      and assign it the address of the LAN gateway interface, and port number
+      to use. Assuming your LAN address is 192.168.1.1 and you wish to run
+      Privoxy on port 8118, this line should
+      look like:

+
+      
+        
+          
-          
-        

+            
   listen-address  192.168.1.1:8118
 

-            

-
-        

-          Save the file, and restart Privoxy. Configure all browsers on the network
-          then to use this address and port number.
-        

-        

-          Alternately, you can have Privoxy
-          listen on all available interfaces:
-        

-        

-        

-        
-          
-            
+        
+      

-
+          

+
+      
Save the file, and restart Privoxy.
+      Configure all browsers on the network then to use this address and port
+      number.

+
+      
Alternately, you can have Privoxy
+      listen on all available interfaces:

+
+      
+        
+          
-          
-        

+            
   listen-address    :8118
 

-            

-
-        

-          And then use Privoxy's permit-access feature to limit connections. A firewall
-          in this situation is recommended as well.
-        

-        

-          The above steps should be the same for any TCP network, regardless
-          of operating system.
-        

-        

-          If you run Privoxy on a LAN with
-          untrusted users, we recommend that you double-check the access
-          control and security options!
-        

-      

-      

-        

-          3.13. Instead of ads, now I get a checkerboard
-          pattern. I don't want to see anything.
-        

-        

-          The replacement for blocked images can be controlled with the set-image-blocker action. You
-          have the choice of a checkerboard pattern, a transparent 1x1 GIF
-          image (aka "blank"), or a redirect to a
-          custom image of your choice. Note that this choice only has effect
-          for images which are blocked as images, i.e. whose URLs match both
-          a handle-as-image and block action.
-        

-        

-          If you want to see nothing, then change the set-image-blocker action to
-          "blank". This can be done by editing the
-          user.action file, or through the web-based
-          actions file editor.
-        

-      

-      

-        

-          3.14. Why would anybody want to see a
-          checkerboard pattern?
-        

-        

-          Remember that telling which image
-          is an ad and which isn't, is an educated guess. While we hope
-          that the standard configuration is rather smart, it will make
-          occasional mistakes. The checkerboard image is visually decent, and
-          it shows you where images have been blocked, which can be very
-          helpful in case some navigation aid or otherwise innocent image was
-          erroneously blocked. It is recommended for new users so they can
-          "see" what is happening. Some people
-          might also enjoy seeing how many banners they don't have to see.
-        

-      

-      

-        

-          3.15. I see some images being replaced with
-          text instead of the checkerboard image. Why and how do I get rid of
-          this?
-        

-        

-          This happens when the banners are not embedded in the HTML code of
-          the page itself, but in separate HTML (sub)documents that are
-          loaded into (i)frames or (i)layers, and these external HTML
-          documents are blocked. Being non-images they get replaced by a
-          substitute HTML page rather than a substitute image, which wouldn't
-          work out technically, since the browser expects and accepts only
-          HTML when it has requested an HTML document.
-        

-        

-          The substitute page adapts to the available space and shows itself
-          as a miniature two-liner if loaded into small frames, or full-blown
-          with a large red "BLOCKED" banner if space allows.
-        

-        

-          If you prefer the banners to be blocked by images, you must see to
-          it that the HTML documents in which they are embedded are not
-          blocked. Clicking the "See why" link
-          offered in the substitute page will show you which rule blocked the
-          page. After changing the rule and un-blocking the HTML documents,
-          the browser will try to load the actual banner images and the usual
-          image blocking will (hopefully!) kick in.
-        

-      

-      

-        

-          3.16. Can Privoxy run as a service on
-          Win2K/NT/XP?
-        

-        

-          Yes. Version 3.0.5 introduces full Windows service functionality. See the User Manual for details on
-          how to install and configure Privoxy as a service.
-        

-        

-          Earlier 3.x versions could run as a system service using srvany.exe. See the discussion at https://sourceforge.net/tracker/?func=detail&atid=361118&aid=485617&group_id=11118,
-          for details, and a sample configuration.
-        

-      

-      

-        

-          3.17. How can I make Privoxy work with other
-          proxies?
-        

-        

-          This can be done and is often useful to combine the benefits of
-          Privoxy with those of a another
-          proxy, for example to cache content. See the forwarding
-          chapter in the User Manual which describes how to do this. If you
-          intend to use Privoxy with Tor, please also have a look at How do I use Privoxy together with Tor.
-        

-      

-      

-        

-          3.18. Can I just set Privoxy to use port 80 and
-          thus avoid individual browser configuration?
-        

-        

-          No, its more complicated than that. This only works with special
-          kinds of proxies known as "intercepting"
-          proxies (see below).
-        

-      

-      

-        

-          3.19. Can Privoxy run as a "transparent" proxy?
-        

-        

-          The whole idea of Privoxy is to modify client requests and server
-          responses in all sorts of ways and therefore it's not a transparent
-          proxy as described in RFC 2616.
-        

-        

-          However, some people say "transparent
-          proxy" when they mean "intercepting
-          proxy". If you are one of them, please read the next entry.
-        

-      

-      

-        

-          3.20. Can Privoxy run as a "intercepting" proxy?
-        

-        

-          Privoxy can't intercept traffic
-          itself, but it can handle requests that where intercepted and
-          redirected with a packet filter (like PF or iptables), as long as the Host header is present.
-        

-        

-          As the Host header is required by HTTP/1.1
-          and as most web sites rely on it anyway, this limitation shouldn't
-          be a problem.
-        

-        

-          Please refer to your packet filter's documentation to learn how to
-          intercept and redirect traffic into Privoxy. Afterward you just have to configure
-          Privoxy to accept intercepted requests.
-        

-      

-      

-        

-          3.21. How can I configure Privoxy for use with
-          Outlook?
-        

-        

-          Versions of Outlook prior to
-          Office 2007, use Internet Explorer
-          components to both render HTML, and fetch any HTTP requests that
-          may be embedded in an HTML email. So however you have Privoxy configured to work with IE, this
-          configuration should automatically be shared, at least with older
-          version of Internet Explorer.
-        

-        

-          Starting with Office 2007, Microsoft is instead using the MS-Word
-          rendering engine with Outlook. It is unknown whether this can be
-          configured to use a proxy.
-        

-      

-      

-        

-          3.22. How can I have separate rules just for
-          HTML mail?
-        

-        

-          The short answer is, you can't. Privoxy has no way of knowing which particular
-          application makes a request, so there is no way to distinguish
-          between web pages and HTML mail. Privoxy just blindly proxies all requests. In
-          the case of Outlook Express (see
-          above), OE uses IE anyway, and there is no way for Privoxy to ever be able to distinguish between
-          them (nor could any other proxy type application for that matter).
-        

-        

-          For a good discussion of some of the issues involved (including
-          privacy and security issues), see https://sourceforge.net/tracker/?func=detail&atid=211118&aid=629518&group_id=11118.
-        

-      

-      

-        

-          3.23. I sometimes notice cookies sneaking
-          through. How?
-        

-        

-          Cookies can be set in several ways. The classic method
-          is via the Set-Cookie HTTP header. This is
-          straightforward, and an easy one to manipulate, such as the Privoxy concept of session-cookies-only. There is also the possibility of
-          using Javascript to set cookies (Privoxy calls these content-cookies). This is trickier because the
-          syntax can vary widely, and thus requires a certain amount of
-          guesswork. It is not realistic to catch all of these short of
-          disabling Javascript, which would break many sites. And lastly, if
-          the cookies are embedded in a HTTPS/SSL secure session via
-          Javascript, they are beyond Privoxy's reach.
-        

-        

-          All in all, Privoxy can help
-          manage cookies in general, can help minimize the loss of privacy
-          posed by cookies, but can't realistically stop all cookies.
-        

-      

-      

-        

-          3.24. Are all cookies bad? Why?
-        

-        

-          No, in fact there are many beneficial uses of cookies. Cookies are just a method that browsers can use
-          to store data between pages, or between browser sessions. Sometimes
-          there is a good reason for this, and the user's life is a bit
-          easier as a result. But there is a long history of some websites
-          taking advantage of this layer of trust, and using the data they
-          glean from you and your browsing habits for their own purposes, and
-          maybe to your potential detriment. Such sites are using you and
-          storing their data on your system. That is why the privacy
-          conscious watch from whom those cookies come, and why they really
-          need to be
-          there.
-        

-        

-          See the Wikipedia cookie definition for more.
-        

-      

-      

-        

-          3.25. How can I allow permanent cookies for
-          my trusted sites?
-        

-        

-          There are several actions that relate to cookies. The default
-          behavior is to allow only "session
-          cookies", which means the cookies only last for the current
-          browser session. This eliminates most kinds of abuse related to
-          cookies. But there may be cases where you want cookies to last.
-        

-        

-          To disable all cookie actions, so that cookies are allowed
-          unrestricted, both in and out, for example.com:
-        

-        

-        

-        
-          
-            
+        
+      

-
+          

+
+      
And then use Privoxy's permit-access feature to limit connections. A firewall in
+      this situation is recommended as well.

+
+      
The above steps should be the same for any TCP network, regardless
+      of operating system.

+
+      
If you run Privoxy on a LAN with
+      untrusted users, we recommend that you double-check the access
+      control and security options!

+    

+
+    

+      
3.13. Instead of ads,
+      now I get a checkerboard pattern. I don't want to see
+      anything.

+
+      
The replacement for blocked images can be controlled with the
+      set-image-blocker action. You have
+      the choice of a checkerboard pattern, a transparent 1x1 GIF image (aka
+      "blank"), or a redirect to a custom image of
+      your choice. Note that this choice only has effect for images which are
+      blocked as images, i.e. whose URLs match both a handle-as-image and block
+      action.

+
+      
If you want to see nothing, then change the set-image-blocker action to
+      "blank". This can be done by editing the
+      user.action file, or through the web-based actions
+      file editor.

+    

+
+    

+      
3.14. Why would
+      anybody want to see a checkerboard pattern?

+
+      
Remember that telling which image
+      is an ad and which isn't, is an educated guess. While we hope that
+      the standard configuration is rather smart, it will make occasional
+      mistakes. The checkerboard image is visually decent, and it shows you
+      where images have been blocked, which can be very helpful in case some
+      navigation aid or otherwise innocent image was erroneously blocked. It
+      is recommended for new users so they can "see" what is happening. Some people might also enjoy
+      seeing how many banners they don't have to see.

+    

+
+    

+      
3.15. I
+      see some images being replaced with text instead of the checkerboard
+      image. Why and how do I get rid of this?

+
+      
This happens when the banners are not embedded in the HTML code of
+      the page itself, but in separate HTML (sub)documents that are loaded
+      into (i)frames or (i)layers, and these external HTML documents are
+      blocked. Being non-images they get replaced by a substitute HTML page
+      rather than a substitute image, which wouldn't work out technically,
+      since the browser expects and accepts only HTML when it has requested
+      an HTML document.

+
+      
The substitute page adapts to the available space and shows itself
+      as a miniature two-liner if loaded into small frames, or full-blown
+      with a large red "BLOCKED" banner if space allows.

+
+      
If you prefer the banners to be blocked by images, you must see to
+      it that the HTML documents in which they are embedded are not blocked.
+      Clicking the "See why" link offered in the
+      substitute page will show you which rule blocked the page. After
+      changing the rule and un-blocking the HTML documents, the browser will
+      try to load the actual banner images and the usual image blocking will
+      (hopefully!) kick in.

+    

+
+    

+      
3.16. Can Privoxy run as
+      a service on Win2K/NT/XP?

+
+      
Yes. Version 3.0.5 introduces full Windows service functionality. See the User Manual for details on how
+      to install and configure Privoxy as a
+      service.

+
+      
Earlier 3.x versions could run as a system service using srvany.exe. See the discussion at https://sourceforge.net/tracker/?func=detail&atid=361118&aid=485617&group_id=11118,
+      for details, and a sample configuration.

+    

+
+    

+      
3.17. How can I
+      make Privoxy work with other proxies?

+
+      
This can be done and is often useful to combine the benefits of
+      Privoxy with those of a another proxy,
+      for example to cache content. See the forwarding
+      chapter in the User Manual which describes how to do this. If you intend to
+      use Privoxy with Tor, please also have a look at How do I use Privoxy together with Tor.

+    

+
+    

+      
3.18. Can I just set
+      Privoxy to use port 80 and thus avoid individual browser
+      configuration?

+
+      
No, its more complicated than that. This only works with special
+      kinds of proxies known as "intercepting"
+      proxies (see below).

+    

+
+    

+      
3.19. Can
+      Privoxy run as a "transparent"
+      proxy?

+
+      
The whole idea of Privoxy is to modify client requests and server
+      responses in all sorts of ways and therefore it's not a transparent
+      proxy as described in RFC 2616.

+
+      
However, some people say "transparent
+      proxy" when they mean "intercepting
+      proxy". If you are one of them, please read the next entry.

+    

+
+    

+      
3.20. Can
+      Privoxy run as a "intercepting"
+      proxy?

+
+      
Privoxy can't intercept traffic
+      itself, but it can handle requests that where intercepted and
+      redirected with a packet filter (like PF or iptables),
+      as long as the Host header is present.

+
+      
As the Host header is required by HTTP/1.1
+      and as most web sites rely on it anyway, this limitation shouldn't be a
+      problem.

+
+      
Please refer to your packet filter's documentation to learn how to
+      intercept and redirect traffic into Privoxy. Afterward you just have to configure
+      Privoxy to accept intercepted requests.

+    

+
+    

+      
3.21. How can I
+      configure Privoxy for use with Outlook?

+
+      
Versions of Outlook prior to Office
+      2007, use Internet Explorer components
+      to both render HTML, and fetch any HTTP requests that may be embedded
+      in an HTML email. So however you have Privoxy configured to work with IE, this
+      configuration should automatically be shared, at least with older
+      version of Internet Explorer.

+
+      
Starting with Office 2007, Microsoft is instead using the MS-Word
+      rendering engine with Outlook. It is unknown whether this can be
+      configured to use a proxy.

+    

+
+    

+      
3.22. How
+      can I have separate rules just for HTML mail?

+
+      
The short answer is, you can't. Privoxy has no way of knowing which particular
+      application makes a request, so there is no way to distinguish between
+      web pages and HTML mail. Privoxy just
+      blindly proxies all requests. In the case of Outlook Express (see above), OE uses IE anyway,
+      and there is no way for Privoxy to
+      ever be able to distinguish between them (nor could any other proxy
+      type application for that matter).

+
+      
For a good discussion of some of the issues involved (including
+      privacy and security issues), see https://sourceforge.net/tracker/?func=detail&atid=211118&aid=629518&group_id=11118.

+    

+
+    

+      
3.23. I
+      sometimes notice cookies sneaking through. How?

+
+      
Cookies can be set in several ways. The classic method is
+      via the Set-Cookie HTTP header. This is
+      straightforward, and an easy one to manipulate, such as the
+      Privoxy concept of session-cookies-only. There is also the possibility of using
+      Javascript to set cookies (Privoxy calls these content-cookies). This is trickier because the syntax
+      can vary widely, and thus requires a certain amount of guesswork. It is
+      not realistic to catch all of these short of disabling Javascript,
+      which would break many sites. And lastly, if the cookies are embedded
+      in a HTTPS/SSL secure session via Javascript, they are beyond
+      Privoxy's reach.

+
+      
All in all, Privoxy can help manage
+      cookies in general, can help minimize the loss of privacy posed by
+      cookies, but can't realistically stop all cookies.

+    

+
+    

+      
3.24. Are
+      all cookies bad? Why?

+
+      
No, in fact there are many beneficial uses of cookies. Cookies are just a method that browsers can use to
+      store data between pages, or between browser sessions. Sometimes there
+      is a good reason for this, and the user's life is a bit easier as a
+      result. But there is a long history of some websites taking advantage
+      of this layer of trust, and using the data they glean from you and your
+      browsing habits for their own purposes, and maybe to your potential
+      detriment. Such sites are using you and storing their data on your
+      system. That is why the privacy conscious watch from whom those cookies
+      come, and why they really need to be there.

+
+      
See the Wikipedia cookie definition for more.

+    

+
+    

+      
3.25. How
+      can I allow permanent cookies for my trusted sites?

+
+      
There are several actions that relate to cookies. The default
+      behavior is to allow only "session cookies",
+      which means the cookies only last for the current browser session. This
+      eliminates most kinds of abuse related to cookies. But there may be
+      cases where you want cookies to last.

+
+      
To disable all cookie actions, so that cookies are allowed
+      unrestricted, both in and out, for example.com:

+
+      
+        
+          
-          
-        

+            
  { -crunch-incoming-cookies -crunch-outgoing-cookies -session-cookies-only -filter{content-cookies} }
   .example.com
 

-            

-
-        

-          Place the above in user.action. Note that
-          some of these may be off by default anyway, so this might be
-          redundant, but there is no harm being explicit in what you want to
-          happen. user.action includes an alias for
-          this situation, called allow-all-cookies.
-        

-      

-      

-        

-          3.26. Can I have separate configurations for
-          different users?
-        

-        

-          Each instance of Privoxy has its
-          own configuration, including such attributes as the TCP port that
-          it listens on. What you can do is run multiple instances of Privoxy, each with a unique listen-address configuration setting, and configuration
-          path, and then each of these can have their own configurations.
-          Think of it as per-port configuration.
-        

-        

-          Simple enough for a few users, but for large installations,
-          consider having groups of users that might share like
-          configurations.
-        

-      

-      

-        

-          3.27. Can I set-up Privoxy as a whitelist of
-          "good" sites?
-        

-        

-          Sure. There are a couple of things you can do for simple
-          white-listing. Here's one real easy one:
-        

-        
-          
-            
+        
+      

-
+          

+
+      
Place the above in user.action. Note that
+      some of these may be off by default anyway, so this might be redundant,
+      but there is no harm being explicit in what you want to happen.
+      user.action includes an alias for this
+      situation, called allow-all-cookies.

+    

+
+    

+      
3.26. Can I have
+      separate configurations for different users?

+
+      
Each instance of Privoxy has its
+      own configuration, including such attributes as the TCP port that it
+      listens on. What you can do is run multiple instances of Privoxy, each with a unique listen-address configuration setting, and configuration
+      path, and then each of these can have their own configurations. Think
+      of it as per-port configuration.

+
+      
Simple enough for a few users, but for large installations, consider
+      having groups of users that might share like configurations.

+    

+
+    

+      
3.27. Can I
+      set-up Privoxy as a whitelist of "good"
+      sites?

+
+      
Sure. There are a couple of things you can do for simple
+      white-listing. Here's one real easy one:

+
+      
+        
+          
-          
-        

+            
  ############################################################
  # Blacklist
  ############################################################
@@ -828,83 +723,71 @@ Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
   toys.example.com
   games.example.com
 

-            

-        

-          This allows access to only those three sites by first blocking all
-          URLs, and then subsequently allowing three specific exceptions.
-        

-        

-          Another approach is Privoxy's trustfile concept, which incorporates the
-          notion of "trusted referrers". See the
-          Trust
-          documentation for details.
-        

-        

-          These are fairly simple approaches and are not completely
-          foolproof. There are various other configuration options that
-          should be disabled (described elsewhere here and in the User Manual) so that users
-          can't modify their own configuration and easily circumvent the
-          whitelist.
-        

-      

-      

-        

-          3.28. How can I turn off ad-blocking?
-        

-        

-          Ad blocking is achieved through a complex application of various
-          Privoxy actions. These
-          actions are deployed against simple images, banners, flash
-          animations, text pages, JavaScript, pop-ups and pop-unders, etc.,
-          so its not as simple as just turning one or two actions off. The
-          various actions that make up Privoxy ad blocking are hard-coded into the
-          default configuration files. It has been assumed that everyone
-          using Privoxy is interested in
-          this particular feature.
-        

-        

-          If you want to do without this, there are several approaches you
-          can take: You can manually undo the many block rules in default.action. Or even easier, just create your
-          own default.action file from scratch
-          without the many ad blocking rules, and corresponding exceptions.
-          Or lastly, if you are not concerned about the additional blocks
-          that are done for privacy reasons, you can very easily over-ride
-          all blocking
-          with the following very simple rule in your user.action:
-        

-        

-        

-        
-          
-            
+        
+      

-
+          

+
+      
This allows access to only those three sites by first blocking all
+      URLs, and then subsequently allowing three specific exceptions.

+
+      
Another approach is Privoxy's
+      trustfile concept, which incorporates the
+      notion of "trusted referrers". See the
+      Trust
+      documentation for details.

+
+      
These are fairly simple approaches and are not completely foolproof.
+      There are various other configuration options that should be disabled
+      (described elsewhere here and in the User Manual) so that users can't modify their own
+      configuration and easily circumvent the whitelist.

+    

+
+    

+      
3.28. How can I
+      turn off ad-blocking?

+
+      
Ad blocking is achieved through a complex application of various
+      Privoxy actions. These
+      actions are deployed against simple images, banners, flash animations,
+      text pages, JavaScript, pop-ups and pop-unders, etc., so its not as
+      simple as just turning one or two actions off. The various actions that
+      make up Privoxy ad blocking are
+      hard-coded into the default configuration files. It has been assumed
+      that everyone using Privoxy is
+      interested in this particular feature.

+
+      
If you want to do without this, there are several approaches you can
+      take: You can manually undo the many block rules in default.action. Or even easier, just create your own
+      default.action file from scratch without the
+      many ad blocking rules, and corresponding exceptions. Or lastly, if you
+      are not concerned about the additional blocks that are done for privacy
+      reasons, you can very easily over-ride all blocking with the following very simple rule
+      in your user.action:

+
+      
+        
+          
-          
-        

+            
  # Unblock everybody, everywhere
  { -block }
  / # UN-Block *all* URLs
 

-            

-
-        

-          Or even a more comprehensive reversing of various ad related
-          actions:
-        

-        

-        

-        
-          
-            
+        
+      

-
+          

+
+      
Or even a more comprehensive reversing of various ad related
+      actions:

+
+      
+        
+          
-          
-        

+            
  # Unblock everybody, everywhere, and turn off appropriate filtering, etc
  { -block \
@@ -916,115 +799,99 @@ Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
  }
  / # UN-Block *all* URLs and allow ads
 

-            

-
-        

-          This last "action" in this compound
-          statement, allow-popups, is an alias
-          that disables various pop-up blocking features.
-        

-      

-      

-        

-          3.29. How can I have custom template pages,
-          like the BLOCKED page?
-        

-        

-          Privoxy "templates" are specialized text files utilized by
-          Privoxy for various purposes and
-          can easily be modified using any text editor. All the template
-          pages are installed in a sub-directory appropriately named: templates. Knowing something about HTML
-          syntax will of course be helpful.
-        

-        

-          Be forewarned that the default templates are subject to being
-          overwritten during upgrades. You can, however, create completely
-          new templates, place them in another directory and specify the
-          alternate path in the main config. For
-          details, have a look at the templdir
-          option.
-        

-      

-      

-        

-          3.30. How can I remove the "Go There Anyway" link from the BLOCKED page?
-        

-        

-          There is more than one way to do it (although Perl is not
-          involved).
-        

-        

-          Editing the BLOCKED template page (see above) may dissuade some
-          users, but this method is easily circumvented. Where you need this
-          level of control, you might want to build Privoxy from source, and disable various
-          features that are available as compile-time options. You should configure the sources as follows:
-        

-        

-        

-        
-          
-            
-          
-        

-
- ./configure  --disable-toggle  --disable-editor  --disable-force
-

-            

-
-        

-          This will create an executable with hard-coded security features so
-          that Privoxy does not allow easy
-          bypassing of blocked sites, or changing the current configuration
-          via any connected user's web browser.
-        

-        

-          Finally, all of these features can also be toggled on/off via
-          options in Privoxy's main config file which means you don't have to recompile
-          anything.
-        

-      

-    
-    

-      

-      
-        
-          
-          
-          
+      

-            Prev
-          
-            Home
-          
-            Next
           
         

+
+      
This last "action" in this compound
+      statement, allow-popups, is an alias that
+      disables various pop-up blocking features.

+    

+
+    

+      
3.29. How can I
+      have custom template pages, like the BLOCKED page?

+
+      
Privoxy "templates" are specialized text files utilized by
+      Privoxy for various purposes and can
+      easily be modified using any text editor. All the template pages are
+      installed in a sub-directory appropriately named: templates. Knowing something about HTML syntax will of
+      course be helpful.

+
+      
Be forewarned that the default templates are subject to being
+      overwritten during upgrades. You can, however, create completely new
+      templates, place them in another directory and specify the alternate
+      path in the main config. For details, have a
+      look at the templdir option.

+    

+
+    

+      
3.30. How can I
+      remove the "Go There Anyway" link from the
+      BLOCKED
+      page?

+
+      
There is more than one way to do it (although Perl is not
+      involved).

+
+      
Editing the BLOCKED template page (see above) may dissuade some
+      users, but this method is easily circumvented. Where you need this
+      level of control, you might want to build Privoxy from source, and disable various features
+      that are available as compile-time options. You should configure the sources as follows:

+
+      
-          
-          
-          

         

-            Installation
-          
-             
-          
-            Miscellaneous
+          
+            
+ ./configure  --disable-toggle  --disable-editor  --disable-force
+

           		
         

       

+
+      
This will create an executable with hard-coded security features so
+      that Privoxy does not allow easy
+      bypassing of blocked sites, or changing the current configuration via
+      any connected user's web browser.

+
+      
Finally, all of these features can also be toggled on/off via
+      options in Privoxy's main config
+      file which means you don't have to recompile anything.

     

-  
-
+  
+
+  

+    

 
+    
+      
+        
+
+        
+
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
PrevHomeNext
Installation Miscellaneous

+  

+
+
diff --git a/doc/webserver/faq/contact.html b/doc/webserver/faq/contact.html
index 16520022..0a8d3d3f 100644
--- a/doc/webserver/faq/contact.html
+++ b/doc/webserver/faq/contact.html
@@ -1,416 +1,364 @@
-
+
+
 
-  
-    
-      Contacting the developers, Bug Reporting and Feature Requests
-    
-    
-    
-    
-    
-    
-    
-  
-  
-    

-      
-        
-          
-        
-        
-          
-          
-          
-        
-      

-            Privoxy Frequently Asked Questions
-          

-            Prev
-          
-          
-            Next
-          

-      

+
+  Contacting the developers, Bug Reporting and Feature
+  Requests
+  
+  
+  
+  
+  
+  
+
+
+
+  

+    
+      
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
Privoxy Frequently Asked
+        Questions
PrevNext

+    

+  

+
+  

+    
6. Contacting the
+    developers, Bug Reporting and Feature Requests

+
+    
We value your feedback. In fact, we rely on it to improve Privoxy and its configuration. However, please note
+    the following hints, so we can provide you with the best support.

+
+    

+      
6.1. Please provide sufficient
+      information

+
+      
A lot of support requests don't contain enough information and can't
+      be solved without a lot of back and forth which causes unnecessary
+      delays. Reading this section should help to prevent that.

+
+      
Before contacting us to report a problem, please try to verify that
+      it is a Privoxy problem, and not a
+      browser or site problem or documented behaviour that just happens to be
+      different than what you expected. If unsure, try toggling
+      off Privoxy, and see if the
+      problem persists.

+
+      
If you are using your own custom configuration, please try the
+      default configuration to see if the problem is configuration related.
+      If you're having problems with a feature that is disabled by default,
+      please ask around on the mailing list if others can reproduce the
+      problem.

+
+      
If you aren't using the latest Privoxy version, the problem may have
+      been found and fixed in the meantime. We would appreciate if you could
+      take the time to upgrade to the latest version and verify that the problem
+      still exists.

+
+      
Please be sure to provide the following information when reporting
+      problems or requesting support:

+
+      
    
+        
  • 
+          
    The exact Privoxy version you
+          are using.
    
+        
    • 
+
+        
  • 
+          
    The operating system and versions you run Privoxy on, e.g. Windows XP SP2.
    
+        
    • 
+
+        
  • 
+          
    The name, platform, and version of the browser you were using (e.g. Internet Explorer v5.5 for Mac).
    
+        
    • 
+
+        
  • 
+          
    The URL where the problem occurred, or some way for us to
+          duplicate the problem (e.g. http://somesite.example.com/?somethingelse=123).
    
+        
    • 
+
+        
  • 
+          
    Whether your version of Privoxy
+          is one supplied by the Privoxy
+          developers via SourceForge, or if you got your copy somewhere
+          else.
    
+        
    • 
+
+        
  • 
+          
    Whether you are using Privoxy
+          together with another proxy such as Tor. If so, please temporary disable the other
+          proxy to see if the symptoms change.
    
+        
    • 
+
+        
  • 
+          
    Whether you are using a personal firewall product. If so, does
+          Privoxy work without it?
    
+        
    • 
+
+        
  • 
+          
    Any other pertinent information to help identify the problem
+          such as config or log file excerpts (yes, you should have log file
+          entries for each action taken). To get a meaningful logfile, please
+          make sure that the logfile directive is being used and the following
+          debug
+          options are enabled (all of them):
    
+
+          
    
+          debug     1 # Log the destination for each request Privoxy let through. See also debug 1024.
    
+
+          debug     2 # show each connection status
    
+
+          debug     4 # show I/O status
    
+
+          debug     8 # show header parsing
    
+
+          debug   128 # debug redirects
    
+          debug   256 # debug GIF de-animation
    
+
+          debug   512 # Common Log Format
    
+
+          debug  1024 # Log the destination for requests Privoxy didn't let through, and the reason why.
    
+
+          debug  4096 # Startup banner and warnings.
    
+
+          debug  8192 # Non-fatal errors
    
+
+          
    If you are having trouble with a filter, please additionally
+          enable
    
+
+          
    
+          debug    64 # debug regular expression filters
    If
+          you are using Privoxy 3.0.17 or later and suspect that it
+          interprets the request or the response incorrectly, please enable
+
+          
    
+          debug 32768 # log all data read from the network
    
+
+          
    It's easy for us to ignore log messages that aren't relevant but
+          missing log messages may make it impossible to investigate a
+          problem. If you aren't sure which of the debug directives are
+          relevant, please just enable all of them and let us worry about
+          it.
    
+
+          
    Note that Privoxy log files may contain sensitive information so
+          please don't submit any logfiles you didn't read first. You can
+          mask sensitive information as long as it's clear that you removed
+          something.
    
+        
    • 
+      

+
+      
You don't have to tell us your actual name when filing a problem
+      report, but if you don't, please use a nickname so we can differentiate
+      between your messages and the ones entered by other "anonymous" users
+      that may respond to your request if they have the same problem or
+      already found a solution. Note that due to spam the trackers may not
+      always allow to post without being logged into SourceForge. If that's
+      the case, you are still free to create a login that isn't directly
+      linked to your name, though.

+
+      
Please also check the status of your request a few days after
+      submitting it, as we may request additional information. If you use a
+      SF id, you should automatically get a mail when someone responds to
+      your request. Please don't bother to add an email address when using
+      the tracker. If you prefer to communicate through email, just use one
+      of the mailing lists directly.

+
+      
If you are new to reporting problems, you might be interested in
+      How to Report Bugs Effectively.

+
+      
The appendix of the Privoxy User Manual also has helpful
+      information on understanding actions, and
+      action debugging.

     

-    

-      

-        6. Contacting the developers, Bug Reporting and
-        Feature Requests
-      

-      

-        We value your feedback. In fact, we rely on it to improve Privoxy and its configuration. However,
-        please note the following hints, so we can provide you with the best
-        support.
-      

-      

-        

-          6.1. Please provide sufficient
-          information
-        

-        

-          A lot of support requests don't contain enough information and
-          can't be solved without a lot of back and forth which causes
-          unnecessary delays. Reading this section should help to prevent
-          that.
-        

-        

-          Before contacting us to report a problem, please try to verify that
-          it is a Privoxy problem, and not a
-          browser or site problem or documented behaviour that just happens
-          to be different than what you expected. If unsure, try toggling off Privoxy,
-          and see if the problem persists.
-        

-        

-          If you are using your own custom configuration, please try the
-          default configuration to see if the problem is configuration
-          related. If you're having problems with a feature that is disabled
-          by default, please ask around on the mailing list if others can
-          reproduce the problem.
-        

-        

-          If you aren't using the latest Privoxy version, the problem may
-          have been found and fixed in the meantime. We would appreciate if
-          you could take the time to upgrade to the latest version and verify that the
-          problem still exists.
-        

-        

-          Please be sure to provide the following information when reporting
-          problems or requesting support:
-        

-        

-        

-        
    
-          
  • 
-            
    
-              The exact Privoxy version you
-              are using.
-            
    
-          
    • 
-          
  • 
-            
    
-              The operating system and versions you run Privoxy on, e.g. Windows XP SP2.
-            
    
-          
    • 
-          
  • 
-            
    
-              The name, platform, and version of the browser you were using (e.g. Internet Explorer v5.5 for Mac).
-            
    
-          
    • 
-          
  • 
-            
    
-              The URL where the problem occurred, or some way for us to
-              duplicate the problem (e.g. http://somesite.example.com/?somethingelse=123).
-            
    
-          
    • 
-          
  • 
-            
    
-              Whether your version of Privoxy is one supplied by the Privoxy developers via SourceForge,
-              or if you got your copy somewhere else.
-            
    
-          
    • 
-          
  • 
-            
    
-              Whether you are using Privoxy
-              together with another proxy such as Tor. If so, please temporary disable the
-              other proxy to see if the symptoms change.
-            
    
-          
    • 
-          
  • 
-            
    
-              Whether you are using a personal firewall product. If so, does
-              Privoxy work without it?
-            
    
-          
    • 
-          
  • 
-            
    
-              Any other pertinent information to help identify the problem
-              such as config or log file excerpts (yes, you should have log
-              file entries for each action taken). To get a meaningful
-              logfile, please make sure that the logfile
-              directive is being used and the following debug
-              options are enabled (all of them):
-            
    
-            
    
-              debug     1 # Log the destination for each request Privoxy let through. See also debug 1024.
    
-
-               debug     2 # show each connection status
    
-
-               debug     4 # show I/O status
    
-
-               debug     8 # show header parsing
    
-
-               debug   128 # debug redirects
    
-
-               debug   256 # debug GIF de-animation
    
-
-               debug   512 # Common Log Format
    
-
-               debug  1024 # Log the destination for requests Privoxy didn't let through, and the reason why.
    
-
-               debug  4096 # Startup banner and warnings.
    
-
-               debug  8192 # Non-fatal errors
-            
    
-
-            
    
-              If you are having trouble with a filter, please additionally
-              enable
-            
    
-            
    
-              debug    64 # debug regular expression filters
-            
    
-            If you are using Privoxy 3.0.17 or later and suspect that it
-            interprets the request or the response incorrectly, please enable
-
-            
    
-              debug 32768 # log all data read from the network
-            
    
-
-            
    
-              It's easy for us to ignore log messages that aren't relevant
-              but missing log messages may make it impossible to investigate
-              a problem. If you aren't sure which of the debug directives are
-              relevant, please just enable all of them and let us worry about
-              it.
-            
    
-            
    
-              Note that Privoxy log files may contain sensitive information
-              so please don't submit any logfiles you didn't read first. You
-              can mask sensitive information as long as it's clear that you
-              removed something.
-            
    
-          
    • 
-        

-
-        

-          You don't have to tell us your actual name when filing a problem
-          report, but if you don't, please use a nickname so we can
-          differentiate between your messages and the ones entered by other
-          "anonymous" users that may respond to your request if they have the
-          same problem or already found a solution. Note that due to spam the
-          trackers may not always allow to post without being logged into
-          SourceForge. If that's the case, you are still free to create a
-          login that isn't directly linked to your name, though.
-        

-        

-          Please also check the status of your request a few days after
-          submitting it, as we may request additional information. If you use
-          a SF id, you should automatically get a mail when someone responds
-          to your request. Please don't bother to add an email address when
-          using the tracker. If you prefer to communicate through email, just
-          use one of the mailing lists directly.
-        

-        

-          If you are new to reporting problems, you might be interested in How to Report Bugs Effectively.
-        

-        

-          The appendix of the Privoxy User Manual also has
-          helpful information on understanding actions, and action
-          debugging.
-        

-      

-      

-        

-          6.2. Get Support
-        

-        

-          All users are welcome to discuss their issues on the users mailing list, where the developers also hang
-          around.
-        

-        

-          Please don't send private support requests to individual Privoxy
-          developers, either use the mailing lists or the support trackers.
-        

-        

-          If you have to contact a Privoxy developer directly for other
-          reasons, please send a real mail and do not bother with
-          SourceForge's messaging system. Answers to SourceForge messages are
-          usually bounced by SourceForge's mail server in which case the
-          developer wasted time writing a response you don't get. From your
-          point of view it will look like your message has been completely
-          ignored, so this is frustrating for all parties involved.
-        

-        

-          Note that the Privoxy mailing lists are moderated. Posts from
-          unsubscribed addresses have to be accepted manually by a moderator.
-          This may cause a delay of several days and if you use a subject
-          that doesn't clearly mention Privoxy or one of its features, your
-          message may be accidentally discarded as spam.
-        

-        

-          If you aren't subscribed, you should therefore spend a few seconds
-          to come up with a proper subject. Additionally you should make it
-          clear that you want to get CC'd. Otherwise some responses will be
-          directed to the mailing list only, and you won't see them.
-        

-      

-      

-        

-          6.3. Reporting Problems
-        

-        

-          "Problems" for our purposes, come in two
-          forms:
-        

-        
    
-          
  • 
-            
    
-              Configuration issues, such as ads that slip through, or sites
-              that don't function properly due to one Privoxy "action" or another being turned "on".
-            
    
-          
    • 
-          
  • 
-            
    
-              "Bugs" in the programming code that
-              makes up Privoxy, such as that
-              might cause a crash. Documentation issues, for example spelling
-              errors and unclear descriptions, are bugs, too.
-            
    
-          
    • 
-        

-        

-          

-            6.3.1. Reporting Ads or Other Configuration
-            Problems
-          

-          

-            Please send feedback on ads that slipped through, innocent images
-            that were blocked, sites that don't work properly, and other
-            configuration related problem of default.action file, to https://sourceforge.net/tracker/?group_id=11118&atid=460288,
-            the Actions File Tracker.
-          

-        

-        

-          

-            6.3.2. Reporting Bugs
-          

-          

-            Before reporting bugs, please make sure that the bug has not already been
-            submitted and observe the additional hints at the top
-            of the submit form. If already submitted, please feel
-            free to add any info to the original report that might help to
-            solve the issue.
-          

-        

-      

-      

-        

-          6.4. Reporting security problems
-        

-        

-          If you discovered a security problem or merely suspect that a bug
-          might be a security issue, please mail Fabian Keil
-          <fk@fabiankeil.de> (OpenPGP fingerprint: 4F36 C17F 3816 9136
-          54A1 E850 6918 2291 8BA2 371C).
-        

-        

-          Usually you should get a response within a day, otherwise it's
-          likely that either your mail or the response didn't make it. If
-          that happens, please mail to the developer list to request a status
-          update.
-        

-      

-      

-        

-          6.5. Mailing Lists
-        

-        

-          If you prefer to communicate through email, instead of using a web
-          interface, feel free to use one of the mailing lists. To discuss
-          issues that haven't been completely diagnosed yet, please use the
-          Privoxy users list. Technically interested users and people who
-          wish to contribute to the project are always welcome on the
-          developers list. You can find an overview of all Privoxy-related mailing lists, including list
-          archives, at: https://lists.privoxy.org/mailman/listinfo. The
-          lists hosted on privoxy.org have been created in 2016, the
-          previously-used lists hosted at SourceForge are deprecated but the
-          archives may still be useful: https://sourceforge.net/mail/?group_id=11118.
-        

+
+    

+      
6.2.
+      Get Support

+
+      
All users are welcome to discuss their issues on the users mailing list, where the developers also hang
+      around.

+
+      
Please don't send private support requests to individual Privoxy
+      developers, either use the mailing lists or the support trackers.

+
+      
If you have to contact a Privoxy developer directly for other
+      reasons, please send a real mail and do not bother with SourceForge's
+      messaging system. Answers to SourceForge messages are usually bounced
+      by SourceForge's mail server in which case the developer wasted time
+      writing a response you don't get. From your point of view it will look
+      like your message has been completely ignored, so this is frustrating
+      for all parties involved.

+
+      
Note that the Privoxy mailing lists are moderated. Posts from
+      unsubscribed addresses have to be accepted manually by a moderator.
+      This may cause a delay of several days and if you use a subject that
+      doesn't clearly mention Privoxy or one of its features, your message
+      may be accidentally discarded as spam.

+
+      
If you aren't subscribed, you should therefore spend a few seconds
+      to come up with a proper subject. Additionally you should make it clear
+      that you want to get CC'd. Otherwise some responses will be directed to
+      the mailing list only, and you won't see them.

+    

+
+    

+      
6.3. Reporting
+      Problems

+
+      
"Problems" for our purposes, come in two
+      forms:

+
+      
    
+        
  • 
+          
    Configuration issues, such as ads that slip through, or sites
+          that don't function properly due to one Privoxy "action" or
+          another being turned "on".
    
+        
    • 
+
+        
  • 
+          
    "Bugs" in the programming code that
+          makes up Privoxy, such as that
+          might cause a crash. Documentation issues, for example spelling
+          errors and unclear descriptions, are bugs, too.
    
+        
    • 
+      

+
+      

+        
6.3.1.
+        Reporting Ads or Other Configuration Problems

+
+        
Please send feedback on ads that slipped through, innocent images
+        that were blocked, sites that don't work properly, and other
+        configuration related problem of default.action file, to https://sourceforge.net/tracker/?group_id=11118&atid=460288,
+        the Actions File Tracker.

       

-      

-        

-          6.6. SourceForge support trackers
-        

-        

-          The SourceForge support trackers may be used as well,
-          but have various technical problems that are unlikely to be fixed
-          anytime soon. If you don't get a timely response, please try the
-          mailing list as well.
-        

+
+      

+        
6.3.2.
+        Reporting Bugs

+
+        
Before reporting bugs, please make sure that the bug has
+        not already been
+        submitted and observe the additional hints at the top of
+        the submit form. If already submitted, please feel free
+        to add any info to the original report that might help to solve the
+        issue.

       

     

-    

-      

-      
-        
-          
-          
-          
-        
-        
-          
-          
-          
-        
-      

-            Prev
-          
-            Home
-          
-            Next
-          

-            Troubleshooting
-          
-             
-          
-            Privoxy Copyright, License and History
-          

+
+    

+      
6.4.
+      Reporting security problems

+
+      
If you discovered a security problem or merely suspect that a bug
+      might be a security issue, please mail Fabian Keil
+      <fk@fabiankeil.de> (OpenPGP fingerprint: 4F36 C17F 3816 9136 54A1
+      E850 6918 2291 8BA2 371C).

+
+      
Usually you should get a response within a day, otherwise it's
+      likely that either your mail or the response didn't make it. If that
+      happens, please mail to the developer list to request a status
+      update.

     

-  
-
 
+    

+      
6.5.
+      Mailing Lists

+
+      
If you prefer to communicate through email, instead of using a web
+      interface, feel free to use one of the mailing lists. To discuss issues
+      that haven't been completely diagnosed yet, please use the Privoxy
+      users list. Technically interested users and people who wish to
+      contribute to the project are always welcome on the developers list.
+      You can find an overview of all Privoxy-related mailing lists, including list
+      archives, at: https://lists.privoxy.org/mailman/listinfo. The lists
+      hosted on privoxy.org have been created in 2016, the previously-used
+      lists hosted at SourceForge are deprecated but the archives may still
+      be useful: https://sourceforge.net/mail/?group_id=11118.

+    

+
+    

+      
6.6.
+      SourceForge support trackers

+
+      
The SourceForge support trackers may be used as well, but
+      have various technical problems that are unlikely to be fixed anytime
+      soon. If you don't get a timely response, please try the mailing list
+      as well.

+    

+  

+
+  

+    

+
+    
+      
+        
+
+        
+
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
PrevHomeNext
Troubleshooting Privoxy Copyright, License
+        and History

+  

+
+
diff --git a/doc/webserver/faq/copyright.html b/doc/webserver/faq/copyright.html
index 5b11676a..32f6b2ea 100644
--- a/doc/webserver/faq/copyright.html
+++ b/doc/webserver/faq/copyright.html
@@ -1,161 +1,142 @@
-
+
+
 
-  
-    
-      Privoxy Copyright, License and History
-    
-    
-    
-    
-    
-    
-  
-  
-    

-      
-        
-          
-        
-        
-          
-          
-          
-        
-      

-            Privoxy Frequently Asked Questions
-          

-            Prev
-          
-          
-             
-          

-      

-    

-    

-      

-        7. Privoxy Copyright, License and History
-      

-      

-        Copyright © 2001-2016 by Privoxy Developers <privoxy-devel@lists.privoxy.org>
-      

-      

-        Some source code is based on code Copyright © 1997 by Anonymous
-        Coders and Junkbusters, Inc. and licensed under the GNU General Public License.
-      

-      

-        Portions of this document are "borrowed"
-        from the original Junkbuster (tm)
-        FAQ, and modified as appropriate for Privoxy.
-      

-      

-        

-          7.1. License
-        

-        

-          Privoxy is free software; you can
-          redistribute it and/or modify it under the terms of the GNU General Public License, version 2, as published
-          by the Free Software Foundation.
-        

-        

-          Privoxy is distributed in the hope
-          that it will be useful, but WITHOUT ANY WARRANTY; without even the
-          implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
-          PURPOSE. See the license for details.
-        

-      

-      

-        

-          7.2. History
-        

-        

-          A long time ago, there was the Internet
-          Junkbuster, by Anonymous Coders and Junkbusters Corporation.
-          This saved many users a lot of pain in the early days of web
-          advertising and user tracking.
-        

-        

-          But the web, its protocols and standards, and with it, the
-          techniques for forcing ads on users, give up autonomy over their
-          browsing, and for tracking them, keeps evolving. Unfortunately, the
-          Internet Junkbuster did not.
-          Version 2.0.2, published in 1998, was the last official release,
-          available from Junkbusters Corporation. Fortunately, it had been
-          released under the GNU GPL, which allowed further development by others.
-        

-        

-          So Stefan Waldherr started maintaining an improved version of the
-          software, to which eventually a number of people contributed
-          patches. It could already replace banners with a transparent image,
-          and had a first version of pop-up killing, but it was still very
-          closely based on the original, with all its limitations, such as
-          the lack of HTTP/1.1 support, flexible per-site configuration, or
-          content modification. The last release from this effort was version
-          2.0.2-10, published in 2000.
-        

-        

-          Then, some developers picked up the thread, and started
-          turning the software inside out, upside down, and then reassembled
-          it, adding many new features along the way.
-        

-        

-          The result of this is Privoxy,
-          whose first stable version, 3.0, was released August, 2002.
-        

-        

-          As of 2012 the Junkbusters Corporation's website
-          (http://www.junkbusters.com/) has been shut down, but Privoxy is
-          still actively maintained.
-        

-      

+
+  Privoxy Copyright, License and History
+  
+  
+  
+  
+  
+
+
+
+  

+    
+      
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
Privoxy Frequently Asked
+        Questions
Prev 

+    

+  

+
+  

+    
7. Privoxy
+    Copyright, License and History

+
+    
Copyright © 2001-2016 by Privoxy Developers <privoxy-devel@lists.privoxy.org>

+
+    
Some source code is based on code Copyright © 1997 by Anonymous
+    Coders and Junkbusters, Inc. and licensed under the GNU General Public License.

+
+    
Portions of this document are "borrowed"
+    from the original Junkbuster (tm) FAQ,
+    and modified as appropriate for Privoxy.

+
+    

+      
7.1. License

+
+      
Privoxy is free software; you can
+      redistribute it and/or modify it under the terms of the GNU General Public License, version 2, as published by
+      the Free Software Foundation.

+
+      
Privoxy is distributed in the hope
+      that it will be useful, but WITHOUT ANY WARRANTY; without even the
+      implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+      PURPOSE. See the license for details.

     

-    

-      

-      
-        
-          
-          
-          
-        
-        
-          
-          
-          
-        
-      

-            Prev
-          
-            Home
-          
-             
-          

-            Contacting the developers, Bug Reporting and Feature Requests
-          
-             
-          
-             
-          

+
+    

+      
7.2. History

+
+      
A long time ago, there was the Internet
+      Junkbuster, by Anonymous Coders and Junkbusters Corporation.
+      This saved many users a lot of pain in the early days of web
+      advertising and user tracking.

+
+      
But the web, its protocols and standards, and with it, the
+      techniques for forcing ads on users, give up autonomy over their
+      browsing, and for tracking them, keeps evolving. Unfortunately, the
+      Internet Junkbuster did not. Version
+      2.0.2, published in 1998, was the last official release, available from
+      Junkbusters Corporation. Fortunately, it had been released under the
+      GNU GPL, which allowed further development by others.

+
+      
So Stefan Waldherr started maintaining an improved version of the
+      software, to which eventually a number of people contributed patches.
+      It could already replace banners with a transparent image, and had a
+      first version of pop-up killing, but it was still very closely based on
+      the original, with all its limitations, such as the lack of HTTP/1.1
+      support, flexible per-site configuration, or content modification. The
+      last release from this effort was version 2.0.2-10, published in
+      2000.

+
+      
Then, some developers picked up the thread, and started turning the
+      software inside out, upside down, and then reassembled it, adding many
+      new features along the way.

+
+      
The result of this is Privoxy,
+      whose first stable version, 3.0, was released August, 2002.

+
+      
As of 2012 the Junkbusters Corporation's website
+      (http://www.junkbusters.com/) has been shut down, but Privoxy is still
+      actively maintained.

     

-  
-
+  

 
+  

+    

+
+    
+      
+        
+
+        
+
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
PrevHome 
Contacting the developers,
+        Bug Reporting and Feature Requests  

+  

+
+
diff --git a/doc/webserver/faq/general.html b/doc/webserver/faq/general.html
index 7acb2233..495eedfb 100644
--- a/doc/webserver/faq/general.html
+++ b/doc/webserver/faq/general.html
@@ -1,753 +1,653 @@
-
+
+
 
-  
-    
-      General Information
-    
-    
-    
-    
-    
-    
-    
-  
-  
-    

-      
-        
-          
-        
-        
-          
-          
-          
-        
-      

-            Privoxy Frequently Asked Questions
-          

-            Prev
-          
-          
-            Next
-          

-      

+
+  General Information
+  
+  
+  
+  
+  
+  
+
+
+
+  

+    
+      
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
Privoxy Frequently Asked
+        Questions
PrevNext

+    

+  

+
+  

+    
1. General
+    Information

+
+    

+      
1.1. Who should give
+      Privoxy a try?

+
+      
Anyone who is interested in security, privacy, or in finer-grained
+      control over their web and Internet experience.

     

-    

-      

-        1. General Information
-      

-      

-        

-          1.1. Who should give Privoxy a try?
-        

-        

-          Anyone who is interested in security, privacy, or in finer-grained
-          control over their web and Internet experience.
-        

-      

-      

-        

-          1.2. Is Privoxy the best choice for me?
-        

-        

-          Privoxy is certainly a good
-          choice, especially for those who want more control and security.
-          Those with the willingness to read the documentation and the
-          ability to fine-tune their installation will benefit the most.
-        

-        

-          One of Privoxy's strengths is that
-          it is highly configurable giving you the ability to completely
-          personalize your installation. Being familiar with, or at least
-          having an interest in learning about HTTP and
-          other networking protocols, HTML, and "Regular Expressions" will be
-          a big plus and will help you get the most out of Privoxy. A new installation just includes a
-          very basic configuration. The user should take this as a starting
-          point only, and enhance it as he or she sees fit. In fact, the user
-          is encouraged, and expected to, fine-tune the configuration.
-        

-        

-          Much of Privoxy's configuration
-          can be done with a Web
-          browser. But there are areas where configuration is done using
-          a text editor to edit configuration files. Also note that
-          the web-based action editor doesn't use authentication and should
-          only be enabled in environments where all clients with access to
-          Privoxy listening port can be
-          trusted.
-        

-      

-      

-        

-          1.3. What is a "proxy"? How does Privoxy work?
-        

-        

-          A web proxy is a service, based on a software such as
-          Privoxy, that clients (i.e.
-          browsers) can use instead of connecting to web servers directly.
-          The clients then ask the proxy to request objects (web pages,
-          images, movies etc) on their behalf and to forward the data to the
-          clients. It is a "go-between". For
-          details, see Wikipedia's proxy definition.
-        

-        

-          There are many reasons to use web proxies, such as security
-          (firewalling), efficiency (caching) and others, and there are any
-          number of proxies to accommodate those needs.
-        

-        

-          Privoxy is a proxy that is
-          primarily focused on privacy enhancement, ad and junk elimination
-          and freeing the user from restrictions placed on his activities.
-          Sitting between your browser(s) and the Internet, it is in a
-          perfect position to filter outbound personal information that your
-          browser is leaking, as well as inbound junk. It uses a variety of
-          techniques to do this, all of which are under your complete control
-          via the various configuration files and options. Being a proxy also
-          makes it easier to share configurations among multiple browsers
-          and/or users.
-        

-      

-      

-        

-          1.4. Does Privoxy do anything more than ad
-          blocking?
-        

-        

-          Yes, ad blocking is but one possible use. There are many, many ways
-          Privoxy can be used to sanitize
-          and customize web browsing.
-        

-      

-      

-        

-          1.5. What is this new version of "Junkbuster"?
-        

-        

-          A long time ago, there was the Internet
-          Junkbuster, by Anonymous Coders and Junkbusters Corporation.
-          This saved many users a lot of pain in the early days of web
-          advertising and user tracking.
-        

-        

-          But the web, its protocols and standards, and with it, the
-          techniques for forcing ads on users, give up autonomy over their
-          browsing, and for tracking them, keeps evolving. Unfortunately, the
-          Internet Junkbuster did not.
-          Version 2.0.2, published in 1998, was the last official release,
-          available from Junkbusters Corporation. Fortunately, it had been
-          released under the GNU GPL, which allowed further development by others.
-        

-        

-          So Stefan Waldherr started maintaining an improved version of the
-          software, to which eventually a number of people contributed
-          patches. It could already replace banners with a transparent image,
-          and had a first version of pop-up killing, but it was still very
-          closely based on the original, with all its limitations, such as
-          the lack of HTTP/1.1 support, flexible per-site configuration, or
-          content modification. The last release from this effort was version
-          2.0.2-10, published in 2000.
-        

-        

-          Then, some developers picked up the thread, and started
-          turning the software inside out, upside down, and then reassembled
-          it, adding many new features along the way.
-        

-        

-          The result of this is Privoxy,
-          whose first stable version, 3.0, was released August, 2002.
-        

-        

-          As of 2012 the Junkbusters Corporation's website
-          (http://www.junkbusters.com/) has been shut down, but Privoxy is
-          still actively maintained.
-        

-      

-      

-        

-          1.6. Why "Privoxy"?
-          Why change the name from Junkbuster at all?
-        

-        

-          Though outdated, Junkbusters Corporation continued to offer their
-          original version of the Internet
-          Junkbuster for a while, so publishing our Junkbuster-derived software under the same
-          name would have led to confusion.
-        

-        

-          There were also potential legal reasons not to use the Junkbuster name, as it was (and maybe still
-          is) a registered trademark of Junkbusters Corporation. There were,
-          however, no objections from Junkbusters Corporation to the Privoxy project itself, and they, in
-          fact, shared our ideals and goals.
-        

-        

-          The Privoxy developers also believed that there were so many
-          improvements over the original code, that it was time to make a
-          clean break from the past and make a name in their own right.
-        

-        

-          Privoxy is the "Privacy
-          Enhancing Proxy". Also, its content modification
-          and junk suppression gives you, the user, more control, more freedom,
-          and allows you to browse your personal and "private edition" of the web.
-        

-      

-      

-        

-          1.7. How does Privoxy differ from the old
-          Junkbuster?
-        

-        

-          Privoxy picks up where Junkbuster left off. Privoxy still blocks ads and banners, still
-          manages cookies, and still helps protect your privacy.
-          But, most of these features have been enhanced, and many new ones
-          have been added, all in the same vein.
-        

-        

-          Privoxy's new features include:
-        

-        

-        

-        
    
-          
  • 
-            
    
-              Supports "Connection: keep-alive". Outgoing connections can be
-              kept alive independently from the client.
-            
    
-          
    • 
-          
  • 
-            
    
-              Supports IPv6, provided the operating system does so too, and
-              the configure script detects it.
-            
    
-          
    • 
-          
  • 
-            
    
-              Supports tagging which allows to change the behaviour based on
-              client and server headers.
-            
    
-          
    • 
-          
  • 
-            
    
-              Can be run as an "intercepting" proxy, which obviates the need
-              to configure browsers individually.
-            
    
-          
    • 
-          
  • 
-            
    
-              Sophisticated actions and filters for manipulating both server
-              and client headers.
-            
    
-          
    • 
-          
  • 
-            
    
-              Can be chained with other proxies.
-            
    
-          
    • 
-          
  • 
-            
    
-              Integrated browser-based configuration and control utility at
-              http://config.privoxy.org/ (shortcut: http://p.p/). Browser-based
-              tracing of rule and filter effects. Remote toggling.
-            
    
-          
    • 
-          
  • 
-            
    
-              Web page filtering (text replacements, removes banners based on
-              size, invisible "web-bugs" and HTML
-              annoyances, etc.)
-            
    
-          
    • 
-          
  • 
-            
    
-              Modularized configuration that allows for standard settings and
-              user settings to reside in separate files, so that installing
-              updated actions files won't overwrite individual user settings.
-            
    
-          
    • 
-          
  • 
-            
    
-              Support for Perl Compatible Regular Expressions in the
-              configuration files, and a more sophisticated and flexible
-              configuration syntax.
-            
    
-          
    • 
-          
  • 
-            
    
-              GIF de-animation.
-            
    
-          
    • 
-          
  • 
-            
    
-              Bypass many click-tracking scripts (avoids script redirection).
-            
    
-          
    • 
-          
  • 
-            
    
-              User-customizable HTML templates for most proxy-generated pages
-              (e.g. "blocked" page).
-            
    
-          
    • 
-          
  • 
-            
    
-              Auto-detection and re-reading of config file changes.
-            
    
-          
    • 
-          
  • 
-            
    
-              Most features are controllable on a per-site or per-location
-              basis.
-            
    
-          
    • 
-          
  • 
-            
    
-              Many smaller new features added, limitations and bugs removed.
-            
    
-          
    • 
-        

-      

-      

-        

-          1.8. How does Privoxy know what is an ad, and
-          what is not?
-        

-        

-          Privoxy's approach to blocking ads
-          is twofold:
-        

-        

-          First, there are certain patterns in the locations (URLs) of banner images. This
-          applies to both the path (you wouldn't guess how many web sites
-          serve their banners from a directory called "banners"!) and the host (blocking the big banner
-          hosting services like doublecklick.net already helps a lot). Privoxy takes advantage of this fact by
-          using URL patterns to sort out and block the requests
-          for things that sound like they would be ads or banners.
-        

-        

-          Second, banners tend to come in certain sizes. But you can't tell the size of
-          an image by its URL without downloading it, and if you do, it's too
-          late to save bandwidth. Therefore, Privoxy also inspects the HTML sources of web
-          pages while they are loaded, and replaces references to images with
-          standard banner sizes by dummy references, so that your browser
-          doesn't request them anymore in the first place.
-        

-        

-          Both of this involves a certain amount of guesswork and is, of
-          course, freely and readily configurable.
-        

-      

-      

-        

-          1.9. Can Privoxy make mistakes? This does not
-          sound very scientific.
-        

-        

-          Actually, it's a black art ;-) And yes, it is always possible to
-          have a broad rule accidentally block or change something by
-          mistake. You will almost surely run into such situations at some
-          point. It is tricky writing rules to cover every conceivable
-          possibility, and not occasionally get false positives.
-        

-        

-          But this should not be a big concern since the Privoxy configuration is very flexible, and
-          includes tools to help identify these types of situations so they
-          can be addressed as needed, allowing you to customize your
-          installation. (See the
-          Troubleshooting section below.)
-        

-      

-      

-        

-          1.10. Will I have to configure Privoxy before
-          I can use it?
-        

-        

-          That depends on your expectations. The default installation should
-          give you a good starting point, and block most ads and unwanted content, but many
-          of the more advanced features are off by default, and require you
-          to activate them.
-        

-        

-          You do have to set up your browser to use Privoxy (see the Installation section below).
-        

-        

-          And you will certainly run into situations where there are false
-          positives, or ads not being blocked that you may not want to see.
-          In these cases, you would certainly benefit by customizing Privoxy's configuration to more closely
-          match your individual situation. And we encourage you to do this.
-          This is where the real power of Privoxy lies!
-        

-      

-      

-        

-          1.11. Can Privoxy run as a server on a network?
-        

-        

-          Yes, Privoxy runs as a server
-          already, and can easily be configured to "serve" more than one client. See How can I set up Privoxy to act as a
-          proxy for my LAN below.
-        

-      

-      

-        

-          1.12. My browser does the same things as
-          Privoxy. Why should I use Privoxy at all?
-        

-        

-          Modern browsers do indeed have some of the same functionality as Privoxy. Maybe this is adequate for you.
-          But Privoxy is very versatile and
-          powerful, and can probably do a number of things your browser just
-          can't.
-        

-        

-          In addition, a proxy is good choice if you use multiple browsers,
-          or have a LAN with multiple computers since Privoxy can run as a server application. This
-          way all the configuration is in one place, and you don't have to
-          maintain a similar configuration for possibly many browsers or
-          users.
-        

-        

-          Note, however, that it's recommended to leverage both your
-          browser's and Privoxy's privacy
-          enhancing features at the same time. While your browser probably
-          lacks some features Privoxy
-          offers, it should also be able to do some things more reliably, for
-          example restricting and suppressing JavaScript.
-        

-      

-      

-        

-          1.13. Why should I trust Privoxy?
-        

-        

-          The most important reason is because you have access to everything, and you
-          can control everything. You can check every line of every
-          configuration file yourself. You can check every last bit of source
-          code should you desire. And even if you can't read code, there
-          should be some comfort in knowing that other people can, and do
-          read it. You can build the software from scratch, if you want, so
-          that you know the executable is clean, and that it is yours. In fact, we
-          encourage this level of scrutiny. It is one reason we use Privoxy ourselves.
-        

-      

-      

-        

-          1.14. Is there is a license or fee? What about a
-          warranty? Registration?
-        

-        

-          Privoxy is free software and
-          licensed under the GNU General Public License (GPL) version 2. It is free
-          to use, copy, modify or distribute as you wish under the terms of
-          this license. Please see the Copyright
-          section for more information on the license and copyright. Or the
-          LICENSE file that should be included.
-        

-        

-          There is no
-          warranty of any kind, expressed, implied or otherwise.
-          That is something that would cost real money ;-) There is no
-          registration either.
-        

-      

-      

-        

-          1.15. Can Privoxy remove spyware? Adware?
-          Viruses?
-        

-        

-          No, at least not reliably enough to trust it. Privoxy is not designed to be a malware
-          removal tool and the default configuration doesn't even try to
-          filter out any malware.
-        

-        

-          Privoxy could help prevent contact
-          from (known) sites that use such tactics with appropriate
-          configuration rules, and thus could conceivably prevent
-          contamination from such sites. However, keeping such a
-          configuration up to date would require a lot of time and effort
-          that would be better spend on keeping your software itself up to
-          date so it doesn't have known vulnerabilities.
-        

-      

-      

-        

-          1.16. Can I use Privoxy with other ad-blocking
-          software?
-        

-        

-          Privoxy should work fine with
-          other proxies and other software in general.
-        

-        

-          But it is probably not necessary to use Privoxy in conjunction with other ad-blocking
-          products, and this could conceivably cause undesirable results. It
-          might be better to choose one software or the other and work a
-          little to tweak its configuration to your liking.
-        

-        

-          Note that this is an advice specific to ad blocking.
-        

-      

-      

-        

-          1.17. I would like to help you, what
-          can I do?
-        

-        

-          

-            1.17.1. Would you like to participate?
-          

-          

-            Well, we always need help. There is something for
-            everybody who wants to help us. We welcome new developers,
-            packagers, testers, documentation writers or really anyone with a
-            desire to help in any way. You DO NOT need to be a "programmer". There are many other tasks
-            available. In fact, the programmers often can't spend as much
-            time programming because of some of the other, more mundane
-            things that need to be done, like checking the Tracker feedback
-            sections or responding to user questions on the mailing lists.
-          

-          

-            So first thing, subscribe to the Privoxy Users or the Privoxy Developers mailing list, join the
-            discussion, help out other users, provide general feedback or
-            report problems you noticed.
-          

-          

-            If you intend to help out with the trackers, you also might want
-            to get an account on SourceForge.net so we don't confuse
-            you with the other name-less users.
-          

-          

-            We also have a Developer's Manual. While it is partly out of date,
-            it's still worth reading.
-          

-          

-            Our TODO list may be of interest to you as well.
-            Please let us know if you want to work on one of the items
-            listed.
-          

-        

-        

-          

-            1.17.2. Would you like to donate?
-          

-          

-            Donations are welcome. Our TODO list is rather long and being able to pay
-            one (or more) developers to work on Privoxy would make a huge
-            difference, even if it was only for a couple of weeks. Donations
-            may also be used for Privoxy-related travel expenses (for example
-            to attend conferences), for hardware used for Privoxy development
-            and for hosting expenses etc.
-          

-          

-            Privoxy is an associated project
-            of Software in
-            the Public Interest (SPI), which allows us to receive
-            tax-deductible donations in the United States. If you want to
-            donate through SPI, please use SPI's donation
-            page to see what the options are.
-          

-          

-            You can also donate to Privoxy using a bank account or a "Paypal"
-            address:
-          

-          

-             Name on account: Zwiebelfreunde
-            e.V.

-              IBAN: DE95430609671126825604

-              BIC: GENODEM1GLS

-              Bank: GLS Bank
-          

-          

-             "Paypal" address: privoxy@zwiebelfreunde.de
-          

-          

-            Donations made through Zwiebelfreunde e.V. are tax-deductible in
-            Germany and other countries that recognize German charitable
-            clubs. Feel free to use the Subject field to provide a name to be
-            credited and a list of TODO list items you are interested in the
-            most. For example: Max Mustermann: #16, #1, #14.
-          

-          

-            Note that donations made through Zwiebelfreunde e.V. currently
-            can't be checked automatically so you may not get credited right
-            away. The credits currently reflect donations received before
-            2016-01-14.
-          

-          

-            If you have any questions regarding donations please mail to
-            either the public user mailing list or, if it's a private matter,
-            to Fabian
-            Keil (Privoxy's SPI liaison) directly.
-          

-        

+
+    

+      
1.2. Is Privoxy
+      the best choice for me?

+
+      
Privoxy is certainly a good choice,
+      especially for those who want more control and security. Those with the
+      willingness to read the documentation and the ability to fine-tune
+      their installation will benefit the most.

+
+      
One of Privoxy's strengths is that
+      it is highly configurable giving you the ability to completely
+      personalize your installation. Being familiar with, or at least having
+      an interest in learning about HTTP and other
+      networking protocols, HTML, and "Regular Expressions" will be a
+      big plus and will help you get the most out of Privoxy. A new installation just includes a very
+      basic configuration. The user should take this as a starting point
+      only, and enhance it as he or she sees fit. In fact, the user is
+      encouraged, and expected to, fine-tune the configuration.

+
+      
Much of Privoxy's configuration can
+      be done with a Web browser. But there are areas where configuration
+      is done using a text editor to edit configuration files. Also note
+      that the web-based action editor doesn't use authentication and should
+      only be enabled in environments where all clients with access to
+      Privoxy listening port can be
+      trusted.

+    

+
+    

+      
1.3. What is a
+      "proxy"? How does Privoxy work?

+
+      
A web proxy is a service, based on a software such as
+      Privoxy, that clients (i.e. browsers)
+      can use instead of connecting to web servers directly. The clients then
+      ask the proxy to request objects (web pages, images, movies etc) on
+      their behalf and to forward the data to the clients. It is a
+      "go-between". For details, see Wikipedia's
+      proxy definition.

+
+      
There are many reasons to use web proxies, such as security
+      (firewalling), efficiency (caching) and others, and there are any
+      number of proxies to accommodate those needs.

+
+      
Privoxy is a proxy that is
+      primarily focused on privacy enhancement, ad and junk elimination and
+      freeing the user from restrictions placed on his activities. Sitting
+      between your browser(s) and the Internet, it is in a perfect position
+      to filter outbound personal information that your browser is leaking,
+      as well as inbound junk. It uses a variety of techniques to do this,
+      all of which are under your complete control via the various
+      configuration files and options. Being a proxy also makes it easier to
+      share configurations among multiple browsers and/or users.

+    

+
+    

+      
1.4. Does
+      Privoxy do anything more than ad blocking?

+
+      
Yes, ad blocking is but one possible use. There are many, many ways
+      Privoxy can be used to sanitize and
+      customize web browsing.

+    

+
+    

+      
1.5. What is this new
+      version of "Junkbuster"?

+
+      
A long time ago, there was the Internet
+      Junkbuster, by Anonymous Coders and Junkbusters Corporation.
+      This saved many users a lot of pain in the early days of web
+      advertising and user tracking.

+
+      
But the web, its protocols and standards, and with it, the
+      techniques for forcing ads on users, give up autonomy over their
+      browsing, and for tracking them, keeps evolving. Unfortunately, the
+      Internet Junkbuster did not. Version
+      2.0.2, published in 1998, was the last official release, available from
+      Junkbusters Corporation. Fortunately, it had been released under the
+      GNU GPL, which allowed further development by others.

+
+      
So Stefan Waldherr started maintaining an improved version of the
+      software, to which eventually a number of people contributed patches.
+      It could already replace banners with a transparent image, and had a
+      first version of pop-up killing, but it was still very closely based on
+      the original, with all its limitations, such as the lack of HTTP/1.1
+      support, flexible per-site configuration, or content modification. The
+      last release from this effort was version 2.0.2-10, published in
+      2000.

+
+      
Then, some developers picked up the thread, and started turning the
+      software inside out, upside down, and then reassembled it, adding many
+      new features along the way.

+
+      
The result of this is Privoxy,
+      whose first stable version, 3.0, was released August, 2002.

+
+      
As of 2012 the Junkbusters Corporation's website
+      (http://www.junkbusters.com/) has been shut down, but Privoxy is still
+      actively maintained.

+    

+
+    

+      
1.6. Why
+      "Privoxy"? Why change the name from
+      Junkbuster at all?

+
+      
Though outdated, Junkbusters Corporation continued to offer their
+      original version of the Internet
+      Junkbuster for a while, so publishing our Junkbuster-derived software under the same name
+      would have led to confusion.

+
+      
There were also potential legal reasons not to use the Junkbuster name, as it was (and maybe still is) a
+      registered trademark of Junkbusters Corporation. There were, however,
+      no objections from Junkbusters Corporation to the Privoxy project itself, and they, in fact, shared
+      our ideals and goals.

+
+      
The Privoxy developers also believed that there were so many
+      improvements over the original code, that it was time to make a clean
+      break from the past and make a name in their own right.

+
+      
Privoxy is the "Privacy Enhancing
+      Proxy". Also, its content modification and junk
+      suppression gives you, the user, more control, more freedom, and
+      allows you to browse your personal and "private
+      edition" of the web.

+    

+
+    

+      
1.7. How does Privoxy
+      differ from the old Junkbuster?

+
+      
Privoxy picks up where Junkbuster left off. Privoxy still blocks ads and banners, still
+      manages cookies, and still helps protect your privacy. But, most of
+      these features have been enhanced, and many new ones have been added,
+      all in the same vein.

+
+      
Privoxy's new features include:

+
+      
    
+        
  • 
+          
    Supports "Connection: keep-alive". Outgoing connections can be
+          kept alive independently from the client.
    
+        
    • 
+
+        
  • 
+          
    Supports IPv6, provided the operating system does so too, and
+          the configure script detects it.
    
+        
    • 
+
+        
  • 
+          
    Supports tagging which allows to change the behaviour based on
+          client and server headers.
    
+        
    • 
+
+        
  • 
+          
    Can be run as an "intercepting" proxy, which obviates the need
+          to configure browsers individually.
    
+        
    • 
+
+        
  • 
+          
    Sophisticated actions and filters for manipulating both server
+          and client headers.
    
+        
    • 
+
+        
  • 
+          
    Can be chained with other proxies.
    
+        
    • 
+
+        
  • 
+          
    Integrated browser-based configuration and control utility at
+          http://config.privoxy.org/ (shortcut: http://p.p/). Browser-based tracing
+          of rule and filter effects. Remote toggling.
    
+        
    • 
+
+        
  • 
+          
    Web page filtering (text replacements, removes banners based on
+          size, invisible "web-bugs" and HTML
+          annoyances, etc.)
    
+        
    • 
+
+        
  • 
+          
    Modularized configuration that allows for standard settings and
+          user settings to reside in separate files, so that installing
+          updated actions files won't overwrite individual user settings.
    
+        
    • 
+
+        
  • 
+          
    Support for Perl Compatible Regular Expressions in the
+          configuration files, and a more sophisticated and flexible
+          configuration syntax.
    
+        
    • 
+
+        
  • 
+          
    GIF de-animation.
    
+        
    • 
+
+        
  • 
+          
    Bypass many click-tracking scripts (avoids script
+          redirection).
    
+        
    • 
+
+        
  • 
+          
    User-customizable HTML templates for most proxy-generated pages
+          (e.g. "blocked" page).
    
+        
    • 
+
+        
  • 
+          
    Auto-detection and re-reading of config file changes.
    
+        
    • 
+
+        
  • 
+          
    Most features are controllable on a per-site or per-location
+          basis.
    
+        
    • 
+
+        
  • 
+          
    Many smaller new features added, limitations and bugs
+          removed.
    
+        
    • 
+      

+    

+
+    

+      
1.8. How does
+      Privoxy know what is an ad, and what is not?

+
+      
Privoxy's approach to blocking ads
+      is twofold:

+
+      
First, there are certain patterns in the locations (URLs) of banner
+      images. This applies to both the path (you wouldn't guess how many web
+      sites serve their banners from a directory called "banners"!) and the host (blocking the big banner
+      hosting services like doublecklick.net already helps a lot).
+      Privoxy takes advantage of this fact
+      by using URL patterns to sort out and block the requests for things
+      that sound like they would be ads or banners.

+
+      
Second, banners tend to come in certain sizes. But you can't tell the
+      size of an image by its URL without downloading it, and if you do, it's
+      too late to save bandwidth. Therefore, Privoxy also inspects the HTML sources of web
+      pages while they are loaded, and replaces references to images with
+      standard banner sizes by dummy references, so that your browser doesn't
+      request them anymore in the first place.

+
+      
Both of this involves a certain amount of guesswork and is, of
+      course, freely and readily configurable.

+    

+
+    

+      
1.9. Can Privoxy
+      make mistakes? This does not sound very scientific.

+
+      
Actually, it's a black art ;-) And yes, it is always possible to
+      have a broad rule accidentally block or change something by mistake.
+      You will almost surely run into such situations at some point. It is
+      tricky writing rules to cover every conceivable possibility, and not
+      occasionally get false positives.

+
+      
But this should not be a big concern since the Privoxy configuration is very flexible, and
+      includes tools to help identify these types of situations so they can
+      be addressed as needed, allowing you to customize your installation.
+      (See the Troubleshooting section
+      below.)

+    

+
+    

+      
1.10. Will I
+      have to configure Privoxy before I can use it?

+
+      
That depends on your expectations. The default installation should
+      give you a good starting point, and block most ads and unwanted
+      content, but many of the more advanced features are off by default, and
+      require you to activate them.

+
+      
You do have to set up your browser to use Privoxy (see the Installation section below).

+
+      
And you will certainly run into situations where there are false
+      positives, or ads not being blocked that you may not want to see. In
+      these cases, you would certainly benefit by customizing Privoxy's configuration to more closely match your
+      individual situation. And we encourage you to do this. This is where
+      the real power of Privoxy lies!

+    

+
+    

+      
1.11. Can Privoxy run as a
+      server on a network?

+
+      
Yes, Privoxy runs as a server
+      already, and can easily be configured to "serve" more than one client. See How can I set up Privoxy to act as a
+      proxy for my LAN below.

+    

+
+    

+      
1.12. My browser
+      does the same things as Privoxy. Why should I use Privoxy at
+      all?

+
+      
Modern browsers do indeed have some of the same functionality as Privoxy. Maybe this is adequate for you. But
+      Privoxy is very versatile and
+      powerful, and can probably do a number of things your browser just
+      can't.

+
+      
In addition, a proxy is good choice if you use multiple browsers, or
+      have a LAN with multiple computers since Privoxy can run as a server application. This way
+      all the configuration is in one place, and you don't have to maintain a
+      similar configuration for possibly many browsers or users.

+
+      
Note, however, that it's recommended to leverage both your browser's
+      and Privoxy's privacy enhancing
+      features at the same time. While your browser probably lacks some
+      features Privoxy offers, it should
+      also be able to do some things more reliably, for example restricting
+      and suppressing JavaScript.

+    

+
+    

+      
1.13. Why should I
+      trust Privoxy?

+
+      
The most important reason is because you have access to everything, and you can
+      control everything. You can check every line of every configuration
+      file yourself. You can check every last bit of source code should you
+      desire. And even if you can't read code, there should be some comfort
+      in knowing that other people can, and do read it. You can build the
+      software from scratch, if you want, so that you know the executable is
+      clean, and that it is yours. In fact, we encourage this level of
+      scrutiny. It is one reason we use Privoxy ourselves.

+    

+
+    

+      
1.14. Is there is a
+      license or fee? What about a warranty? Registration?

+
+      
Privoxy is free software and
+      licensed under the GNU General Public License (GPL) version 2. It is free to
+      use, copy, modify or distribute as you wish under the terms of this
+      license. Please see the Copyright section
+      for more information on the license and copyright. Or the LICENSE file that should be included.

+
+      
There is no
+      warranty of any kind, expressed, implied or otherwise. That
+      is something that would cost real money ;-) There is no registration
+      either.

+    

+
+    

+      
1.15. Can Privoxy
+      remove spyware? Adware? Viruses?

+
+      
No, at least not reliably enough to trust it. Privoxy is not designed to be a malware removal
+      tool and the default configuration doesn't even try to filter out any
+      malware.

+
+      
Privoxy could help prevent contact
+      from (known) sites that use such tactics with appropriate configuration
+      rules, and thus could conceivably prevent contamination from such
+      sites. However, keeping such a configuration up to date would require a
+      lot of time and effort that would be better spend on keeping your
+      software itself up to date so it doesn't have known
+      vulnerabilities.

+    

+
+    

+      
1.16. Can I use
+      Privoxy with other ad-blocking software?

+
+      
Privoxy should work fine with other
+      proxies and other software in general.

+
+      
But it is probably not necessary to use Privoxy in conjunction with other ad-blocking
+      products, and this could conceivably cause undesirable results. It
+      might be better to choose one software or the other and work a little
+      to tweak its configuration to your liking.

+
+      
Note that this is an advice specific to ad blocking.

+    

+
+    

+      
1.17. I would like to help you, what can I
+      do?

+
+      

+        
1.17.1.
+        Would you like to participate?

+
+        
Well, we always need help. There is something for
+        everybody who wants to help us. We welcome new developers, packagers,
+        testers, documentation writers or really anyone with a desire to help
+        in any way. You DO
+        NOT need to be a "programmer".
+        There are many other tasks available. In fact, the programmers often
+        can't spend as much time programming because of some of the other,
+        more mundane things that need to be done, like checking the Tracker
+        feedback sections or responding to user questions on the mailing
+        lists.

+
+        
So first thing, subscribe to the Privoxy Users or the Privoxy Developers mailing list, join the discussion, help
+        out other users, provide general feedback or report problems you
+        noticed.

+
+        
If you intend to help out with the trackers, you also might want
+        to get an account on SourceForge.net so we don't confuse you
+        with the other name-less users.

+
+        
We also have a Developer's Manual. While it is partly out of date, it's
+        still worth reading.

+
+        
Our TODO list may be of interest to you as well. Please
+        let us know if you want to work on one of the items listed.

       

-      

-        

-          1.18. How can I become a sponsor and get my logo
-          or link on privoxy.org?
-        

-        

-          We are currently offering the following sponsor levels as an
-          experiment:
-        

-        

-          

-            

-              Gold (10000 EUR/year)
-            

-            

-              

-                Logo shown at the bottom of the Privoxy
-                homepage. Logo, link and self description on the sponsor
-                page.
-              

-            

-            

-              Silver (1000 EUR/year)
-            

-            

-              

-                Logo shown randomly at the bottom of the Privoxy
-                homepage. Logo, link and self description on the sponsor
-                page.
-              

-            

-            

-              Bronze (500 EUR/year)
-            

-            

-              

-                Logo and link on the sponsor
-                page.
-              

-            

-          

-        

-        

-          The logo sizes depend on the sponsor level.
-        

-        

-          The details may change over time but changes will only affect new
-          sponsors (or existing sponsors that explicitly agreed to the
-          changes).
-        

-        

-          If you want to become a sponsor, please contact Fabian Keil. New
-          sponsors are only accepted if no developer objects.
-        

+
+      

+        

+
+        
Donations are welcome. Our TODO list is rather long and being able to pay one
+        (or more) developers to work on Privoxy would make a huge difference,
+        even if it was only for a couple of weeks. Donations may also be used
+        for Privoxy-related travel expenses (for example to attend
+        conferences), for hardware used for Privoxy development and for
+        hosting expenses etc.

+
+        
Privoxy is an associated project
+        of Software in the
+        Public Interest (SPI), which allows us to receive tax-deductible
+        donations in the United States. If you want to donate through SPI,
+        please use SPI's donation page to see what the options are.

+
+        
You can also donate to Privoxy using a bank account or a "Paypal"
+        address:

+
+        

+         Name on account: Zwiebelfreunde
+        e.V.

+         IBAN: DE95430609671126825604

+         BIC: GENODEM1GLS

+         Bank: GLS Bank

+
+        

+         "Paypal" address: privoxy@zwiebelfreunde.de

+
+        
Donations made through Zwiebelfreunde e.V. are tax-deductible in
+        Germany and other countries that recognize German charitable clubs.
+        Feel free to use the Subject field to provide a name to be credited
+        and a list of TODO list items you are interested in the most. For
+        example: Max Mustermann: #16, #1, #14.

+
+        
Note that donations made through Zwiebelfreunde e.V. currently
+        can't be checked automatically so you may not get credited right
+        away. The credits currently reflect donations received before
+        2016-01-14.

+
+        
If you have any questions regarding donations please mail to
+        either the public user mailing list or, if it's a private matter, to
+        Fabian Keil
+        (Privoxy's SPI liaison) directly.

       

     

-    

-      

-      
-        
-          
-          
-          
-        
-        
-          
-          
-          
-        
-      

-            Prev
-          
-            Home
-          
-            Next
-          

-            Privoxy Frequently Asked Questions
-          
-             
-          
-            Installation
-          

+
+    

+      

+
+      
We are currently offering the following sponsor levels as an
+      experiment:

+
+      

+        

+          
Gold (10000 EUR/year)

+
+          

+            
Logo shown at the bottom of the Privoxy homepage.
+            Logo, link and self description on the sponsor
+            page.

+          

+
+          
Silver (1000 EUR/year)

+
+          

+            
Logo shown randomly at the bottom of the Privoxy homepage.
+            Logo, link and self description on the sponsor
+            page.

+          

+
+          
Bronze (500 EUR/year)

+
+          

+            
Logo and link on the sponsor
+            page.

+          

+        

+      

+
+      
The logo sizes depend on the sponsor level.

+
+      
The details may change over time but changes will only affect new
+      sponsors (or existing sponsors that explicitly agreed to the
+      changes).

+
+      
If you want to become a sponsor, please contact Fabian Keil. New sponsors
+      are only accepted if no developer objects.

     

-  
-
+  

+
+  

+    

+
+    
+      
+        
+
+        
 
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
PrevHomeNext
Privoxy Frequently Asked
+        Questions Installation

+  

+
+
diff --git a/doc/webserver/faq/index.html b/doc/webserver/faq/index.html
index dc131e1c..779dfb01 100644
--- a/doc/webserver/faq/index.html
+++ b/doc/webserver/faq/index.html
@@ -1,699 +1,561 @@
-
+
+
 
-  
-    
-      Privoxy Frequently Asked Questions
-    
-    
-    
-    
-    
-  
-  
-    

-      

-        

-          Privoxy Frequently Asked Questions
-        

-        

-          Copyright © 2001-2016 by Privoxy
-          Developers

-        

-        

-          $Id: faq.sgml,v 2.128 2016/07/26 10:46:29 fabiankeil Exp $

-        

-        

-          

-            
-            

-              This FAQ gives quick answers to frequently asked questions
-              about Privoxy. It is not a substitute for the Privoxy User Manual.
-            

-            

-              What is Privoxy?
-            

-            

-              Privoxy is a non-caching web proxy with advanced filtering
-              capabilities for enhancing privacy, modifying web page data and
-              HTTP headers, controlling access, and removing ads and other
-              obnoxious Internet junk. Privoxy has a flexible configuration
-              and can be customized to suit individual needs and tastes. It
-              has application for both stand-alone systems and multi-user
-              networks.
-            

-            

-              Privoxy is Free Software and licensed under the GNU GPLv2.
-            

-            

-              Privoxy is an associated project of Software in the Public
-              Interest (SPI).
-            

-            

-              Helping hands and donations are welcome:
-            

-            
-
-            

-              Please note that this document is a work in progress. This copy
-              represents the state at the release of version 3.0.26. You can
-              find the latest version of the document at https://www.privoxy.org/faq/. Please see the Contact section if you want to contact
-              the developers.
-            

-          

+
+  Privoxy Frequently Asked Questions
+  
+  
+  
+  
+
+
+
+  

+    

+      
Privoxy Frequently Asked
+      Questions

+
+      
Copyright ©
+      2001-2016 by Privoxy
+      Developers

+
+      
$Id: faq.sgml,v 2.129 2016/07/28 08:25:33 fabiankeil
+      Exp $

+
+      

+        

+          
+
+          
This FAQ gives quick answers to frequently asked questions about
+          Privoxy. It is
+          not a substitute for the Privoxy User Manual.

+
+          
What is Privoxy?

+
+          
Privoxy is a non-caching web proxy with advanced filtering
+          capabilities for enhancing privacy, modifying web page data and
+          HTTP headers, controlling access, and removing ads and other
+          obnoxious Internet junk. Privoxy has a flexible configuration and
+          can be customized to suit individual needs and tastes. It has
+          application for both stand-alone systems and multi-user
+          networks.

+
+          
Privoxy is Free Software and licensed under the GNU GPLv2.

+
+          
Privoxy is an associated project of Software in the Public
+          Interest (SPI).

+
+          
Helping hands and donations are welcome:

+
+          
+
+          
Please note that this document is a work in progress. This copy
+          represents the state at the release of version 3.0.26. You can find
+          the latest version of the document at https://www.privoxy.org/faq/. Please see the Contact section if you want to contact the
+          developers.

         

-        

-      

-      

-        

-          

-            Table of Contents
-          

-          

-            1. General Information
-          

-          

-            

-              

-                1.1. Who should give Privoxy a try?
-              

-              

-                1.2. Is Privoxy the best
-                choice for me?
-              

-              

-                1.3. What is a "proxy"? How does Privoxy work?
-              

-              

-                1.4. Does Privoxy do
-                anything more than ad blocking?
-              

-              

-                1.5. What is this new version of
-                "Junkbuster"?
-              

-              

-                1.6. Why "Privoxy"? Why change the name from Junkbuster
-                at all?
-              

-              

-                1.7. How does Privoxy differ
-                from the old Junkbuster?
-              

-              

-                1.8. How does Privoxy know
-                what is an ad, and what is not?
-              

-              

-                1.9. Can Privoxy make
-                mistakes? This does not sound very scientific.
-              

-              

-                1.10. Will I have to
-                configure Privoxy before I can use it?
-              

-              

-                1.11. Can Privoxy run as a server
-                on a network?
-              

-              

-                1.12. My browser does the
-                same things as Privoxy. Why should I use Privoxy at all?
-              

-              

-                1.13. Why should I trust
-                Privoxy?
-              

-              

-                1.14. Is there is a license or
-                fee? What about a warranty? Registration?
-              

-              

-                1.15. Can Privoxy remove
-                spyware? Adware? Viruses?
-              

-              

-                1.16. Can I use Privoxy with
-                other ad-blocking software?
-              

-              

-                1.17. I would like
-                to help you, what can I do?
-              

-              

-                

-                  

-                    1.17.1. Would you like
-                    to participate?
-                  

-                  

-                    1.17.2. Would you like to
-                    donate?
-                  

-                

-              

-              

-                1.18. How can I become a
-                sponsor and get my logo or link on privoxy.org?
-              

-            

-          

-          

-            2. Installation
-          

-          

-            

-              

-                2.1. Which browsers
-                are supported by Privoxy?
-              

-              

-                2.2. Which operating
-                systems are supported?
-              

-              

-                2.3. Can I use
-                Privoxy with my email client?
-              

-              

-                2.4. I just installed
-                Privoxy. Is there anything special I have to do now?
-              

-              

-                2.5. What is the proxy
-                address of Privoxy?
-              

-              

-                2.6. I just installed
-                Privoxy, and nothing is happening. All the ads are there.
-                What's wrong?
-              

-              

-                2.7. I get a "Privoxy is not being used" dummy page
-                although Privoxy is running and being used.
-              

-            

-          

-          

-            3. Configuration
-          

-          

-            

-              

-                3.1. What exactly is
-                an "actions" file?
-              

-              

-                3.2. The "actions" concept confuses me. Please list
-                some of these "actions".
-              

-              

-                3.3. How are actions
-                files configured? What is the easiest way to do this?
-              

-              

-                3.4. There are several
-                different "actions" files. What
-                are the differences?
-              

-              

-                3.5. Where can I get
-                updated Actions Files?
-              

-              

-                3.6. Can I use my old
-                config files?
-              

-              

-                3.7. Why is the
-                configuration so complicated?
-              

-              

-                3.8. How can I make my
-                Yahoo/Hotmail/Gmail account work?
-              

-              

-                3.9. What's the
-                difference between the "Cautious",
-                "Medium" and "Advanced" defaults?
-              

-              

-                3.10. Why can I
-                change the configuration with a browser? Does that not raise
-                security issues?
-              

-              

-                3.11. What is the default.filter file? What is a "filter"?
-              

-              

-                3.12. How can I set up
-                Privoxy to act as a proxy for my LAN?
-              

-              

-                3.13. Instead of ads,
-                now I get a checkerboard pattern. I don't want to see
-                anything.
-              

-              

-                3.14. Why would anybody
-                want to see a checkerboard pattern?
-              

-              

-                3.15. I see some
-                images being replaced with text instead of the checkerboard
-                image. Why and how do I get rid of this?
-              

-              

-                3.16. Can Privoxy run as
-                a service on Win2K/NT/XP?
-              

-              

-                3.17. How can I make
-                Privoxy work with other proxies?
-              

-              

-                3.18. Can I just set
-                Privoxy to use port 80 and thus avoid individual browser
-                configuration?
-              

-              

-                3.19. Can Privoxy
-                run as a "transparent" proxy?
-              

-              

-                3.20. Can Privoxy
-                run as a "intercepting" proxy?
-              

-              

-                3.21. How can I
-                configure Privoxy for use with Outlook?
-              

-              

-                3.22. How can I
-                have separate rules just for HTML mail?
-              

-              

-                3.23. I sometimes
-                notice cookies sneaking through. How?
-              

-              

-                3.24. Are all
-                cookies bad? Why?
-              

-              

-                3.25. How can I
-                allow permanent cookies for my trusted sites?
-              

-              

-                3.26. Can I have
-                separate configurations for different users?
-              

-              

-                3.27. Can I set-up
-                Privoxy as a whitelist of "good"
-                sites?
-              

-              

-                3.28. How can I turn
-                off ad-blocking?
-              

-              

-                3.29. How can I have
-                custom template pages, like the BLOCKED page?
-              

-              

-                3.30. How can I remove
-                the "Go There Anyway" link from
-                the BLOCKED page?
-              

-            

-          

-          

-            4. Miscellaneous
-          

-          

-            

-              

-                4.1. How much does Privoxy slow
-                my browsing down? This has to add extra time to browsing.
-              

-              

-                4.2. I notice considerable
-                delays in page requests. What's wrong?
-              

-              

-                4.3. What are
-                "http://config.privoxy.org/" and "http://p.p/"?
-              

-              

-                4.4. How can I submit new ads, or
-                report problems?
-              

-              

-                4.5. If I do submit missed ads,
-                will they be included in future updates?
-              

-              

-                4.6. Why doesn't anyone answer
-                my support request?
-              

-              

-                4.7. How can I hide my IP address?
-              

-              

-                4.8. Can Privoxy guarantee I
-                am anonymous?
-              

-              

-                4.9. A test site says I am not
-                using a Proxy.
-              

-              

-                4.10. How do I use Privoxy together
-                with Tor?
-              

-              

-                4.11. Might some things break
-                because header information or content is being altered?
-              

-              

-                4.12. Can Privoxy act as a "caching" proxy to speed up web
-                browsing?
-              

-              

-                4.13. What about as a firewall?
-                Can Privoxy protect me?
-              

-              

-                4.14. I have large empty spaces /
-                a checkerboard pattern now where ads used to be. Why?
-              

-              

-                4.15. How can Privoxy filter Secure
-                (HTTPS) URLs?
-              

-              

-                4.16. Privoxy runs as a "server". How secure is it? Do I need to
-                take any special precautions?
-              

-              

-                4.17. Can I temporarily disable
-                Privoxy?
-              

-              

-                4.18. When "disabled" is Privoxy totally out of the
-                picture?
-              

-              

-                4.19. How can I tell Privoxy to
-                totally ignore certain sites?
-              

-              

-                4.20. My logs show Privoxy "crunches" ads, but also its own
-                internal CGI pages. What is a "crunch"?
-              

-              

-                4.21. Can Privoxy affect files
-                that I download from a webserver? FTP server?
-              

-              

-                4.22. I just downloaded a Perl
-                script, and Privoxy altered it! Yikes, what is wrong!
-              

-              

-                4.23. Should I continue to use
-                a "HOSTS" file for
-                ad-blocking?
-              

-              

-                4.24. Where can I find more
-                information about Privoxy and related issues?
-              

-              

-                4.25. I've noticed that Privoxy
-                changes "Microsoft" to "MicroSuck"! Why are you manipulating my
-                browsing?
-              

-              

-                4.26. Does Privoxy produce "valid" HTML (or XHTML)?
-              

-              

-                4.27. How did you manage
-                to get Privoxy on my computer without my consent?
-              

-            

-          

-          

-            5. Troubleshooting
-          

-          

-            

-              

-                5.1. I cannot connect to any
-                websites. Or, I am getting "connection
-                refused" message with every web page. Why?
-              

-              

-                5.2. Why am I getting a 503
-                Error (WSAECONNREFUSED) on every page?
-              

-              

-                5.3. I just added a new rule,
-                but the steenkin ad is still getting through. How?
-              

-              

-                5.4. One of my favorite sites
-                does not work with Privoxy. What can I do?
-              

-              

-                5.5. After installing Privoxy, I
-                have to log in every time I start IE. What gives?
-              

-              

-                5.6. I cannot connect to any FTP
-                sites. Privoxy is blocking me.
-              

-              

-                5.7. In Mac OS X, I can't
-                configure Microsoft Internet Explorer to use Privoxy as the
-                HTTP proxy.
-              

-              

-                5.8. In Mac OS X, I
-                dragged the Privoxy folder to the trash in order to uninstall
-                it. Now the finder tells me I don't have sufficient
-                privileges to empty the trash.
-              

-              

-                5.9. In Mac OS X Panther
-                (10.3), images often fail to load and/or I experience random
-                delays in page loading. I'm using localhost as my browser's proxy setting.
-              

-              

-                5.10. I just
-                upgraded to Mac OS X 10.9 (Mavericks) and now Privoxy has stopped working.
-              

-              

-                5.11. My logs show many
-                "Unable to get my own hostname"
-                lines. Why?
-              

-              

-                5.12. When I try to launch
-                Privoxy, I get an error message "port
-                8118 is already in use" (or similar wording). Why?
-              

-              

-                5.13. Pages with UTF-8
-                fonts are garbled.
-              

-              

-                5.14. Why are binary
-                files (such as images) corrupted when Privoxy is used?
-              

-              

-                5.15. What is the "demoronizer" and why is it there?
-              

-              

-                5.16. Why do I keep seeing
-                "PrivoxyWindowOpen()" in raw
-                source code?
-              

-              

-                5.17. I am getting too many
-                DNS errors like "404 No Such
-                Domain". Why can't Privoxy do this better?
-              

-              

-                5.18. At one site Privoxy just
-                hangs, and starts taking all CPU. Why is this?
-              

-              

-                5.19. I just installed
-                Privoxy, and all my browsing has slowed to a crawl. What
-                gives?
-              

-              

-                5.20. Why do my filters
-                work on some sites but not on others?
-              

-              

-                5.21. On some HTTPS sites
-                my browser warns me about unauthenticated content, the URL
-                bar doesn't get highlighted and the lock symbol appears to be
-                broken. What's going on?
-              

-              

-                5.22. I get selinux error
-                messages. How can I fix this?
-              

-              

-                5.23. I compiled Privoxy with Gentoo's portage and
-                it appears to be very slow. Why?
-              

-              

-                5.24. What are tainted
-                sockets and how do I prevent them?
-              

-              

-                5.25. After adding my
-                custom filters, Privoxy
-                crashes when visitting certain websites
-              

-            

-          

-          

-            6. Contacting the developers, Bug
-            Reporting and Feature Requests
-          

-          

-            

-              

-                6.1. Please
-                provide sufficient information
-              

-              

-                6.2. Get Support
-              

-              

-                6.3. Reporting Problems
-              

-              

-                

-                  

-                    6.3.1. Reporting Ads
-                    or Other Configuration Problems
-                  

-                  

-                    6.3.2. Reporting
-                    Bugs
-                  

-                

-              

-              

-                6.4. Reporting
-                security problems
-              

-              

-                6.5. Mailing Lists
-              

-              

-                6.6. SourceForge support
-                trackers
-              

-            

-          

-          

-            7. Privoxy Copyright, License and
-            History
-          

-          

-            

-              

-                7.1. License
-              

-              

-                7.2. History
-              

-            

-          

-        

       

+      

     

-    

-      

-      
-        
-          
-          
-          
-        
-        
-          
-          
-          
-        
-      

-             
-          
-             
-          
-            Next
-          

-             
-          
-             
-          
-            General Information
-          

+
+    

+      

+        
Table of Contents

+
+        
1. General Information

+
+        

+          

+            
1.1. Who should give
+            Privoxy a try?

+
+            
1.2. Is Privoxy the best
+            choice for me?

+
+            
1.3. What is a "proxy"? How does Privoxy work?

+
+            
1.4. Does Privoxy do
+            anything more than ad blocking?

+
+            
1.5. What is this new version of
+            "Junkbuster"?

+
+            
1.6. Why "Privoxy"? Why change the name from Junkbuster at
+            all?

+
+            
1.7. How does Privoxy differ
+            from the old Junkbuster?

+
+            
1.8. How does Privoxy know
+            what is an ad, and what is not?

+
+            
1.9. Can Privoxy make
+            mistakes? This does not sound very scientific.

+
+            
1.10. Will I have to
+            configure Privoxy before I can use it?

+
+            
1.11. Can Privoxy run as a server
+            on a network?

+
+            
1.12. My browser does the
+            same things as Privoxy. Why should I use Privoxy at all?

+
+            
1.13. Why should I trust
+            Privoxy?

+
+            
1.14. Is there is a license or
+            fee? What about a warranty? Registration?

+
+            
1.15. Can Privoxy remove
+            spyware? Adware? Viruses?

+
+            
1.16. Can I use Privoxy with
+            other ad-blocking software?

+
+            
1.17. I would like
+            to help you, what can I do?

+
+            

+              

+                
1.17.1. Would you like
+                to participate?

+
+                
1.17.2. Would you like to
+                donate?

+              

+            

+
+            
1.18. How can I become a
+            sponsor and get my logo or link on privoxy.org?

+          

+        

+
+        
2. Installation

+
+        

+          

+            
2.1. Which browsers
+            are supported by Privoxy?

+
+            
2.2. Which operating
+            systems are supported?

+
+            
2.3. Can I use
+            Privoxy with my email client?

+
+            
2.4. I just installed
+            Privoxy. Is there anything special I have to do now?

+
+            
2.5. What is the proxy
+            address of Privoxy?

+
+            
2.6. I just installed
+            Privoxy, and nothing is happening. All the ads are there. What's
+            wrong?

+
+            
2.7. I get a "Privoxy is not being used" dummy page although
+            Privoxy is running and being used.

+          

+        

+
+        
3. Configuration

+
+        

+          

+            
3.1. What exactly is
+            an "actions" file?

+
+            
3.2. The "actions" concept confuses me. Please list some of
+            these "actions".

+
+            
3.3. How are actions
+            files configured? What is the easiest way to do this?

+
+            
3.4. There are several
+            different "actions" files. What are
+            the differences?

+
+            
3.5. Where can I get
+            updated Actions Files?

+
+            
3.6. Can I use my old
+            config files?

+
+            
3.7. Why is the
+            configuration so complicated?

+
+            
3.8. How can I make my
+            Yahoo/Hotmail/Gmail account work?

+
+            
3.9. What's the
+            difference between the "Cautious",
+            "Medium" and "Advanced" defaults?

+
+            
3.10. Why can I
+            change the configuration with a browser? Does that not raise
+            security issues?

+
+            
3.11. What is the
+            default.filter file? What is a
+            "filter"?

+
+            
3.12. How can I set up
+            Privoxy to act as a proxy for my LAN?

+
+            
3.13. Instead of ads,
+            now I get a checkerboard pattern. I don't want to see
+            anything.

+
+            
3.14. Why would anybody
+            want to see a checkerboard pattern?

+
+            
3.15. I see some
+            images being replaced with text instead of the checkerboard
+            image. Why and how do I get rid of this?

+
+            
3.16. Can Privoxy run as
+            a service on Win2K/NT/XP?

+
+            
3.17. How can I make
+            Privoxy work with other proxies?

+
+            
3.18. Can I just set
+            Privoxy to use port 80 and thus avoid individual browser
+            configuration?

+
+            
3.19. Can Privoxy
+            run as a "transparent" proxy?

+
+            
3.20. Can Privoxy
+            run as a "intercepting"
+            proxy?

+
+            
3.21. How can I
+            configure Privoxy for use with Outlook?

+
+            
3.22. How can I
+            have separate rules just for HTML mail?

+
+            
3.23. I sometimes
+            notice cookies sneaking through. How?

+
+            
3.24. Are all
+            cookies bad? Why?

+
+            
3.25. How can I
+            allow permanent cookies for my trusted sites?

+
+            
3.26. Can I have
+            separate configurations for different users?

+
+            
3.27. Can I set-up
+            Privoxy as a whitelist of "good"
+            sites?

+
+            
3.28. How can I turn
+            off ad-blocking?

+
+            
3.29. How can I have
+            custom template pages, like the BLOCKED page?

+
+            
3.30. How can I remove
+            the "Go There Anyway" link from the
+            BLOCKED
+            page?

+          

+        

+
+        
4. Miscellaneous

+
+        

+          

+            
4.1. How much does Privoxy slow
+            my browsing down? This has to add extra time to
+            browsing.

+
+            
4.2. I notice considerable
+            delays in page requests. What's wrong?

+
+            
4.3. What are
+            "http://config.privoxy.org/" and "http://p.p/"?

+
+            
4.4. How can I submit new ads, or
+            report problems?

+
+            
4.5. If I do submit missed ads,
+            will they be included in future updates?

+
+            
4.6. Why doesn't anyone answer
+            my support request?

+
+            
4.7. How can I hide my IP
+            address?

+
+            
4.8. Can Privoxy guarantee I
+            am anonymous?

+
+            
4.9. A test site says I am not
+            using a Proxy.

+
+            
4.10. How do I use Privoxy together
+            with Tor?

+
+            
4.11. Might some things break
+            because header information or content is being altered?

+
+            
4.12. Can Privoxy act as a
+            "caching" proxy to speed up web
+            browsing?

+
+            
4.13. What about as a firewall?
+            Can Privoxy protect me?

+
+            
4.14. I have large empty spaces /
+            a checkerboard pattern now where ads used to be. Why?

+
+            
4.15. How can Privoxy filter Secure
+            (HTTPS) URLs?

+
+            
4.16. Privoxy runs as a
+            "server". How secure is it? Do I need
+            to take any special precautions?

+
+            
4.17. Can I temporarily disable
+            Privoxy?

+
+            
4.18. When "disabled" is Privoxy totally out of the
+            picture?

+
+            
4.19. How can I tell Privoxy to
+            totally ignore certain sites?

+
+            
4.20. My logs show Privoxy
+            "crunches" ads, but also its own
+            internal CGI pages. What is a "crunch"?

+
+            
4.21. Can Privoxy affect files
+            that I download from a webserver? FTP server?

+
+            
4.22. I just downloaded a Perl
+            script, and Privoxy altered it! Yikes, what is wrong!

+
+            
4.23. Should I continue to use
+            a "HOSTS" file for
+            ad-blocking?

+
+            
4.24. Where can I find more
+            information about Privoxy and related issues?

+
+            
4.25. I've noticed that Privoxy
+            changes "Microsoft" to "MicroSuck"! Why are you manipulating my
+            browsing?

+
+            
4.26. Does Privoxy produce
+            "valid" HTML (or XHTML)?

+
+            
4.27. How did you manage
+            to get Privoxy on my computer without my consent?

+          

+        

+
+        
5. Troubleshooting

+
+        

+          

+            
5.1. I cannot connect to any
+            websites. Or, I am getting "connection
+            refused" message with every web page. Why?

+
+            
5.2. Why am I getting a 503
+            Error (WSAECONNREFUSED) on every page?

+
+            
5.3. I just added a new rule,
+            but the steenkin ad is still getting through. How?

+
+            
5.4. One of my favorite sites
+            does not work with Privoxy. What can I do?

+
+            
5.5. After installing Privoxy, I
+            have to log in every time I start IE. What gives?

+
+            
5.6. I cannot connect to any FTP
+            sites. Privoxy is blocking me.

+
+            
5.7. In Mac OS X, I can't
+            configure Microsoft Internet Explorer to use Privoxy as the HTTP
+            proxy.

+
+            
5.8. In Mac OS X, I
+            dragged the Privoxy folder to the trash in order to uninstall it.
+            Now the finder tells me I don't have sufficient privileges to
+            empty the trash.

+
+            
5.9. In Mac OS X Panther
+            (10.3), images often fail to load and/or I experience random
+            delays in page loading. I'm using localhost as my browser's proxy setting.

+
+            
5.10. I just
+            upgraded to Mac OS X 10.9 (Mavericks) and now Privoxy has stopped working.

+
+            
5.11. My logs show many
+            "Unable to get my own hostname" lines.
+            Why?

+
+            
5.12. When I try to launch
+            Privoxy, I get an error message "port 8118 is
+            already in use" (or similar wording). Why?

+
+            
5.13. Pages with UTF-8
+            fonts are garbled.

+
+            
5.14. Why are binary
+            files (such as images) corrupted when Privoxy is used?

+
+            
5.15. What is the
+            "demoronizer" and why is it
+            there?

+
+            
5.16. Why do I keep seeing
+            "PrivoxyWindowOpen()" in raw source
+            code?

+
+            
5.17. I am getting too many
+            DNS errors like "404 No Such Domain".
+            Why can't Privoxy do this better?

+
+            
5.18. At one site Privoxy just
+            hangs, and starts taking all CPU. Why is this?

+
+            
5.19. I just installed
+            Privoxy, and all my browsing has slowed to a crawl. What
+            gives?

+
+            
5.20. Why do my filters
+            work on some sites but not on others?

+
+            
5.21. On some HTTPS sites
+            my browser warns me about unauthenticated content, the URL bar
+            doesn't get highlighted and the lock symbol appears to be broken.
+            What's going on?

+
+            
5.22. I get selinux error
+            messages. How can I fix this?

+
+            
5.23. I compiled
+            Privoxy with Gentoo's portage
+            and it appears to be very slow. Why?

+
+            
5.24. What are tainted
+            sockets and how do I prevent them?

+
+            
5.25. After adding my
+            custom filters, Privoxy crashes
+            when visitting certain websites

+          

+        

+
+        
6. Contacting the developers, Bug
+        Reporting and Feature Requests

+
+        

+          

+            
6.1. Please
+            provide sufficient information

+
+            
6.2. Get
+            Support

+
+            
6.3. Reporting
+            Problems

+
+            

+              

+                
6.3.1. Reporting Ads
+                or Other Configuration Problems

+
+                
6.3.2. Reporting
+                Bugs

+              

+            

+
+            
6.4. Reporting
+            security problems

+
+            
6.5. Mailing
+            Lists

+
+            
6.6. SourceForge support
+            trackers

+          

+        

+
+        
7. Privoxy Copyright, License and
+        History

+
+        

+          

+            
7.1. License

+
+            
7.2. History

+          

+        

+      

     

-  
-
+  

+
+  

+    

+
+    
+      
+        
+
+        
 
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
  Next
  General Information

+  

+
+
diff --git a/doc/webserver/faq/installation.html b/doc/webserver/faq/installation.html
index dc994edc..44e81f11 100644
--- a/doc/webserver/faq/installation.html
+++ b/doc/webserver/faq/installation.html
@@ -1,285 +1,252 @@
-
+
+
 
-  
-    
-      Installation
-    
-    
-    
-    
-    
-    
-    
-  
-  
-    

-      
-        
-          
-        
-        
-          
-          
-          
-        
-      

-            Privoxy Frequently Asked Questions
-          

-            Prev
-          
-          
-            Next
-          

-      

+
+  Installation
+  
+  
+  
+  
+  
+  
+
+
+
+  

+    
+      
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
Privoxy Frequently Asked
+        Questions
PrevNext

+    

+  

+
+  

+    
2.
+    Installation

+
+    

+      
2.1. Which
+      browsers are supported by Privoxy?

+
+      
Any browser that can be configured to use a proxy, which should be
+      virtually all browsers, including Firefox, Internet
+      Explorer, Opera, and
+      Safari among others. Direct browser
+      support is not an absolute requirement since Privoxy runs as a separate application and talks
+      to the browser in the standardized HTTP protocol, just like a web
+      server does.

     

-    

-      

-        2. Installation
-      

-      

-        

-          2.1. Which browsers are supported by
-          Privoxy?
-        

-        

-          Any browser that can be configured to use a proxy, which should be
-          virtually all browsers, including Firefox, Internet
-          Explorer, Opera, and Safari among others. Direct browser
-          support is not an absolute requirement since Privoxy runs as a separate application and
-          talks to the browser in the standardized HTTP protocol, just like a
-          web server does.
-        

-      

-      

-        

-          2.2. Which operating systems are supported?
-        

-        

-          At present, Privoxy is known to
-          run on Windows 95 and later versions (98, ME, 2000, XP, Vista,
-          Windows 7 etc.), GNU/Linux (RedHat, SuSE, Debian, Fedora, Gentoo,
-          Slackware and others), Mac OS X (10.4 and upwards on PPC and Intel
-          processors), OS/2, Haiku, DragonFly, ElectroBSD, FreeBSD, NetBSD,
-          OpenBSD, Solaris, and various other flavors of Unix.
-        

-        

-          Privoxy used to work on AmigaOS
-          and QNX, too, but the code currently isn't maintained and its
-          status unknown. It might no longer compile, but getting it working
-          again shouldn't be too hard.
-        

-        

-          But any operating system that runs TCP/IP, can conceivably take
-          advantage of Privoxy in a
-          networked situation where Privoxy
-          would run as a server on a LAN gateway. Then only the "gateway" needs to be running one of the above
-          operating systems.
-        

-        

-          Source code is freely available, so porting to other operating
-          systems is always a possibility.
-        

-      

-      

-        

-          2.3. Can I use Privoxy with my email
-          client?
-        

-        

-          As long as there is some way to set a HTTP proxy for the client,
-          then yes, any application can be used, whether it is strictly
-          speaking a "browser" or not. Though this
-          may not be the best approach for dealing with some of the common
-          abuses of HTML in email. See How can I configure Privoxy with Outlook? below for more on this.
-        

-        

-          Be aware that HTML email presents a number of unique security and
-          privacy related issues, that can require advanced skills to
-          overcome. The developers recommend using email clients that can be
-          configured to convert HTML to plain text for these reasons.
-        

-      

-      

-        

-          2.4. I just installed Privoxy. Is there
-          anything special I have to do now?
-        

-        

-          All browsers should be told to use Privoxy as a proxy by specifying the correct
-          proxy address and port number in the appropriate configuration area
-          for the browser. It's possible to combine Privoxy with a packet filter to intercept HTTP
-          requests even if the client isn't explicitly configured to use
-          Privoxy, but where possible,
-          configuring the client is recommended. See the User Manual for
-          more details. You should also flush your browser's memory and
-          disk cache to get rid of any cached junk items, and remove any
-          stored cookies.
-        

-      

-      

-        

-          2.5. What is the proxy address of Privoxy?
-        

-        

-          If you set up the Privoxy to run
-          on the computer you browse from (rather than your ISP's server or
-          some networked computer on a LAN), the proxy will be on 127.0.0.1 (sometimes referred to as "localhost", which is the special name used by every
-          computer on the Internet to refer to itself) and the port will be
-          8118 (unless you used the listen-address config option to tell Privoxy to run on a different port).
-        

-        

-          When configuring your browser's proxy settings you typically enter
-          the word "localhost" or the IP address
-          "127.0.0.1" in the boxes next to "HTTP" and "Secure"
-          (HTTPS) and then the number "8118" for
-          "port". This tells your browser to send
-          all web requests to Privoxy
-          instead of directly to the Internet.
-        

-        

-          Privoxy can also be used to proxy
-          for a Local Area Network. In this case, your would enter either the
-          IP address of the LAN host where Privoxy is running, or the equivalent
-          hostname, e.g. 192.168.1.1. Port
-          assignment would be same as above. Note that Privoxy doesn't listen on any LAN interfaces
-          by default.
-        

-        

-          Privoxy does not currently handle
-          any other protocols such as FTP, SMTP, IM, IRC, ICQ, etc.
-        

-      

-      

-        

-          2.6. I just installed Privoxy, and nothing is
-          happening. All the ads are there. What's wrong?
-        

-        

-          Did you configure your browser to use Privoxy as a proxy? It does not sound like it.
-          See above. You might also try flushing the browser's caches to
-          force a full re-reading of pages. You can verify that Privoxy is running, and your browser is
-          correctly configured by entering the special URL: http://p.p/. This should take you
-          to a page titled "This is Privoxy.."
-          with access to Privoxy's internal
-          configuration. If you see this, then you are good to go. If you
-          receive a page saying "Privoxy is not
-          running", then the browser is not set up to use your Privoxy installation. If you receive
-          anything else (probably nothing at all), it could either be that
-          the browser is not set up correctly, or that Privoxy is not running at all. Check the log
-          file. For instructions on starting Privoxy and browser configuration, see the chapter on starting Privoxy in the User
-          Manual.
-        

-      

-      

-        

-          2.7. I get a "Privoxy is not
-          being used" dummy page although Privoxy is running and being
-          used.
-        

-        

-          First, make sure that Privoxy is really running and being used by visiting http://p.p/. You should see
-          the Privoxy main page. If not, see
-          the chapter on starting Privoxy in the User
-          Manual.
-        

-        

-          Now if http://p.p/ works
-          for you, but other parts of Privoxy's web interface show the dummy page,
-          your browser has cached a redirection it encountered before Privoxy was being used. You need to
-          clear your browser's cache. Note that shift-reloading the dummy
-          page won't help, since that'll only refresh the dummy page, not the
-          redirection that lead you there.
-        

-        

-          The procedure for clearing the cache varies from browser to
-          browser. For example, Mozilla/Netscape users would click Edit --> Preferences --> Advanced --> Cache and then click both "Clear Memory Cache"
-          and "Clear Disk
-          Cache". In some Firefox versions it's Tools --> Options --> Privacy --> Cache and then click "Clear Cache Now".
-        

-      

+
+    

+      
2.2. Which operating
+      systems are supported?

+
+      
At present, Privoxy is known to run
+      on Windows 95 and later versions (98, ME, 2000, XP, Vista, Windows 7
+      etc.), GNU/Linux (RedHat, SuSE, Debian, Fedora, Gentoo, Slackware and
+      others), Mac OS X (10.4 and upwards on PPC and Intel processors), OS/2,
+      Haiku, DragonFly, ElectroBSD, FreeBSD, NetBSD, OpenBSD, Solaris, and
+      various other flavors of Unix.

+
+      
Privoxy used to work on AmigaOS and
+      QNX, too, but the code currently isn't maintained and its status
+      unknown. It might no longer compile, but getting it working again
+      shouldn't be too hard.

+
+      
But any operating system that runs TCP/IP, can conceivably take
+      advantage of Privoxy in a networked
+      situation where Privoxy would run as a
+      server on a LAN gateway. Then only the "gateway" needs to be running one of the above operating
+      systems.

+
+      
Source code is freely available, so porting to other operating
+      systems is always a possibility.

+    

+
+    

+      
2.3. Can I
+      use Privoxy with my email client?

+
+      
As long as there is some way to set a HTTP proxy for the client,
+      then yes, any application can be used, whether it is strictly speaking
+      a "browser" or not. Though this may not be
+      the best approach for dealing with some of the common abuses of HTML in
+      email. See How can I configure
+      Privoxy with Outlook? below for more on this.

+
+      
Be aware that HTML email presents a number of unique security and
+      privacy related issues, that can require advanced skills to overcome.
+      The developers recommend using email clients that can be configured to
+      convert HTML to plain text for these reasons.

     

-    

-      

-      
-        
-          
-          
-          
-        
-        
-          
-          
-          
-        
-      

-            Prev
-          
-            Home
-          
-            Next
-          

-            General Information
-          
-             
-          
-            Configuration
-          

+
+    

+      
2.4. I just
+      installed Privoxy. Is there anything special I have to do now?

+
+      
All browsers should be told to use Privoxy as a proxy by specifying the correct proxy
+      address and port number in the appropriate configuration area for the
+      browser. It's possible to combine Privoxy with a packet filter to intercept HTTP
+      requests even if the client isn't explicitly configured to use
+      Privoxy, but where possible,
+      configuring the client is recommended. See the User Manual for more
+      details. You should also flush your browser's memory and disk cache
+      to get rid of any cached junk items, and remove any stored cookies.

     

-  
-
 
+    

+      
2.5. What is the
+      proxy address of Privoxy?

+
+      
If you set up the Privoxy to run on
+      the computer you browse from (rather than your ISP's server or some
+      networked computer on a LAN), the proxy will be on 127.0.0.1 (sometimes referred to as "localhost", which is the special name used by every
+      computer on the Internet to refer to itself) and the port will be 8118
+      (unless you used the listen-address config option to tell Privoxy to run on a different port).

+
+      
When configuring your browser's proxy settings you typically enter
+      the word "localhost" or the IP address
+      "127.0.0.1" in the boxes next to
+      "HTTP" and "Secure" (HTTPS) and then the number "8118" for "port". This tells
+      your browser to send all web requests to Privoxy instead of directly to the Internet.

+
+      
Privoxy can also be used to proxy
+      for a Local Area Network. In this case, your would enter either the IP
+      address of the LAN host where Privoxy
+      is running, or the equivalent hostname, e.g. 192.168.1.1. Port assignment would be same as above.
+      Note that Privoxy doesn't listen on
+      any LAN interfaces by default.

+
+      
Privoxy does not currently handle
+      any other protocols such as FTP, SMTP, IM, IRC, ICQ, etc.

+    

+
+    

+      
2.6. I just installed
+      Privoxy, and nothing is happening. All the ads are there. What's
+      wrong?

+
+      
Did you configure your browser to use Privoxy as a proxy? It does not sound like it. See
+      above. You might also try flushing the browser's caches to force a full
+      re-reading of pages. You can verify that Privoxy is running, and your browser is correctly
+      configured by entering the special URL: http://p.p/. This should take you to a page titled
+      "This is Privoxy.." with access to
+      Privoxy's internal configuration. If
+      you see this, then you are good to go. If you receive a page saying
+      "Privoxy is not running", then the browser
+      is not set up to use your Privoxy
+      installation. If you receive anything else (probably nothing at all),
+      it could either be that the browser is not set up correctly, or that
+      Privoxy is not running at all. Check
+      the log
+      file. For instructions on starting Privoxy and browser configuration, see the
+      chapter on starting Privoxy
+      in the User Manual.

+    

+
+    

+      
2.7. I get a
+      "Privoxy is not being used" dummy page
+      although Privoxy is running and being used.

+
+      
First, make sure that Privoxy is really running and being used by visiting
+      http://p.p/. You should see the
+      Privoxy main page. If not, see the
+      chapter on starting Privoxy
+      in the User Manual.

+
+      
Now if http://p.p/ works for
+      you, but other parts of Privoxy's web
+      interface show the dummy page, your browser has cached a redirection it
+      encountered before Privoxy was being
+      used. You need to clear your browser's cache. Note that shift-reloading
+      the dummy page won't help, since that'll only refresh the dummy page,
+      not the redirection that lead you there.

+
+      
The procedure for clearing the cache varies from browser to browser.
+      For example, Mozilla/Netscape users
+      would click Edit --> Preferences --> Advanced --> Cache
+      and then click both "Clear
+      Memory Cache" and "Clear Disk Cache". In some Firefox versions it's Tools --> Options
+      --> Privacy --> Cache and then click "Clear Cache Now".

+    

+  

+
+  

+    

+
+    
+      
+        
+
+        
+
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
PrevHomeNext
General Information Configuration

+  

+
+
diff --git a/doc/webserver/faq/misc.html b/doc/webserver/faq/misc.html
index f02395ff..ec844641 100644
--- a/doc/webserver/faq/misc.html
+++ b/doc/webserver/faq/misc.html
@@ -1,1045 +1,913 @@
-
+
+
 
-  
-    
-      Miscellaneous
-    
-    
-    
-    
-    
-    
-    
-  
-  
-    

-      
-        
-          
-        
+
+  Miscellaneous
+  
+  
+  
+  
+  
+  
+
+
+
+  

+    

-            Privoxy Frequently Asked Questions
-          

+      
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
Privoxy Frequently Asked
+        Questions
PrevNext

+    

+  

+
+  

+    
4. Miscellaneous

+
+    

+      
4.1. How much does
+      Privoxy slow my browsing down? This has to add extra time to
+      browsing.

+
+      
How much of an impact depends on many things, including the CPU of
+      the host system, how aggressive the configuration is, which specific
+      actions are being triggered, the size of the page, the bandwidth of the
+      connection, etc.

+
+      
Overall, it should not slow you down any in real terms, and may
+      actually help speed things up since ads, banners and other junk are not
+      typically being retrieved and displayed. The actual processing time
+      required by Privoxy itself for each
+      page, is relatively small in the overall scheme of things, and happens
+      very quickly. This is typically more than offset by time saved not
+      downloading and rendering ad images and other junk content (if ad
+      blocking is being used).

+
+      
"Filtering" content via the filter or deanimate-gifs actions may cause a perceived slowdown,
+      since the entire document needs to be buffered before displaying. And
+      on very large documents, filtering may have some measurable impact. How
+      much depends on the page size, the actual definition of the filter(s),
+      etc. See below. Most other actions have little to no impact on
+      speed.

+
+      
Also, when filtering is enabled but zlib support isn't available,
+      compression is often disabled (see prevent-compression). This can have an impact on speed as
+      well, although it's probably smaller than you might think. Again, the
+      page size, etc. will determine how much of an impact.

+    

+
+    

+      
4.2. I
+      notice considerable delays in page requests. What's wrong?

+
+      
If you use any filter
+      action, such as filtering banners by size, web-bugs etc, or the
+      deanimate-gifs action, the entire document must be
+      loaded into memory in order for the filtering mechanism to work, and
+      nothing is sent to the browser during this time.

+
+      
The loading time typically does not really change much in real
+      numbers, but the feeling is different, because most browsers are able
+      to start rendering incomplete content, giving the user a feeling of "it
+      works". This effect is more noticeable on slower dialup connections.
+      Extremely large documents may have some impact on the time to load the
+      page where there is filtering being done. But overall, the difference
+      should be very minimal. If there is a big impact, then probably some
+      other situation is contributing (like anti-virus software).

+
+      
Filtering is automatically disabled for inappropriate MIME types.
+      But note that if the web server mis-reports the MIME type, then content
+      that should not be filtered, could be. Privoxy only knows how to differentiate filterable
+      content because of the MIME type as reported by the server, or because
+      of some configuration setting that enables/disables filtering.

+    

+
+    

+      
4.3. What are
+      "http://config.privoxy.org/" and "http://p.p/"?

+
+      
http://config.privoxy.org/ is the address of Privoxy's built-in user interface, and http://p.p/ is a shortcut for it.

+
+      
Since Privoxy sits between your web
+      browser and the Internet, it can simply intercept requests for these
+      addresses and answer them with its built-in "web
+      server".

+
+      
This also makes for a good test for your browser configuration: If
+      entering the URL http://config.privoxy.org/ takes you to a page saying
+      "This is Privoxy ...", everything is OK. If
+      you get a page saying "Privoxy is not
+      working" instead, then your browser didn't use Privoxy for the request, hence it could not be
+      intercepted, and you have accessed the real web site at config.privoxy.org.

+
+      
Note that config.privoxy.org resolves to a public IP address. If you
+      use config.privoxy.org as ping or traceroute target you will reach the
+      system on the Internet (Privoxy can't intercept ICMP requests). If you
+      want to ping the system Privoxy runs on, you should use its IP address
+      or local DNS name (if it has got one).

+    

+
+    

+      
4.4. How can I submit
+      new ads, or report problems?

+
+      
Please see the Contact section for
+      various ways to interact with the developers.

+    

+
+    

+      
4.5. If I do submit
+      missed ads, will they be included in future updates?

+
+      
Whether such submissions are eventually included in the default.action configuration file depends on how
+      significant the issue is. We of course want to address any potential
+      problem with major, high-profile sites such as Google, Yahoo, etc. Any site
+      with global or regional reach, has a good chance of being a candidate.
+      But at the other end of the spectrum are any number of smaller,
+      low-profile sites such as for local clubs or schools. Since their reach
+      and impact are much less, they are best handled by inclusion in the
+      user's user.action, and thus would be
+      unlikely to be included.

+    

+
+    

+      
4.6. Why doesn't
+      anyone answer my support request?

+
+      
Rest assured that it has been read and considered. Why it is not
+      answered, could be for various reasons, including no one has a good
+      answer for it, no one has had time to yet investigate it thoroughly, it
+      has been reported numerous times already, or because not enough
+      information was provided to help us help you. Your efforts are not
+      wasted, and we do appreciate them.

+    

+
+    

+      
4.7. How can I hide my IP
+      address?

+
+      
If you run both the browser and Privoxy locally, you cannot hide your IP address
+      with Privoxy or ultimately any other
+      software alone. The server needs to know your IP address so that it
+      knows where to send the responses back.

+
+      
There are many publicly usable "anonymous" proxies out there, which
+      provide a further level of indirection between you and the web
+      server.

+
+      
However, these proxies are called "anonymous" because you don't need
+      to authenticate, not because they would offer any real anonymity. Most
+      of them will log your IP address and make it available to the
+      authorities in case you violate the law of the country they run in. In
+      fact you can't even rule out that some of them only exist to *collect*
+      information on (those suspicious) people with a more than average
+      preference for privacy.

+
+      
If you want to hide your IP address from most adversaries, you
+      should consider chaining Privoxy with
+      Tor. The
+      configuration details can be found in How
+      do I use Privoxy together with
+      Tor section just below.

+    

+
+    

+      
4.8. Can
+      Privoxy guarantee I am anonymous?

+
+      
No. Your chances of remaining anonymous are improved, but unless you
+      chain Privoxy with Tor or a similar proxy and know what you're
+      doing when it comes to configuring the rest of your system, you should
+      assume that everything you do on the Web can be traced back to you.

+
+      
Privoxy can remove various
+      information about you, and allows you more freedom to decide which sites you can
+      trust, and what details you want to reveal. But it neither hides your
+      IP address, nor can it guarantee that the rest of the system behaves
+      correctly. There are several possibilities how a web sites can find out
+      who you are, even if you are using a strict Privoxy configuration and chained it with
+      Tor.

+
+      
Most of Privoxy's privacy-enhancing
+      features can be easily subverted by an insecure browser configuration,
+      therefore you should use a browser that can be configured to only
+      execute code from trusted sites, and be careful which sites you trust.
+      For example there is no point in having Privoxy modify the User-Agent header, if websites
+      can get all the information they want through JavaScript, ActiveX,
+      Flash, Java etc.

+
+      
A few browsers disclose the user's email address in certain
+      situations, such as when transferring a file by FTP. Privoxy does not filter FTP. If you need this
+      feature, or are concerned about the mail handler of your browser
+      disclosing your email address, you might consider products such as
+      NSClean.

+
+      
Browsers available only as binaries could use non-standard headers
+      to give out any information they can have access to: see the
+      manufacturer's license agreement. It's impossible to anticipate and
+      prevent every breach of privacy that might occur. The professionally
+      paranoid prefer browsers available as source code, because anticipating
+      their behavior is easier. Trust the source, Luke!

+    

+
+    

+      
4.9. A test site
+      says I am not using a Proxy.

+
+      
Good! Actually, they are probably testing for some other kinds of
+      proxies. Hiding yourself completely would require additional steps.

+    

+
+    

+      
4.10. How do I use Privoxy
+      together with Tor?

+
+      
Before you configure Privoxy to use
+      Tor, please
+      follow the User Manual chapters 2. Installation
+      and 5. Startup
+      to make sure Privoxy itself is setup
+      correctly.

+
+      
If it is, refer to Tor's
+      extensive documentation to learn how to install Tor, and make sure Tor's logfile says that "Tor
+      has successfully opened a circuit" and it "looks like client functionality is working".

+
+      
If either Tor or Privoxy isn't working, their combination most
+      likely will neither. Testing them on their own will also help you to
+      direct problem reports to the right audience. If Privoxy isn't working, don't bother the
+      Tor developers. If Tor isn't working, don't send bug reports to the
+      Privoxy Team.

+
+      
If you verified that Privoxy and
+      Tor are working, it is time to connect
+      them. As far as Privoxy is concerned,
+      Tor is just another proxy that can be
+      reached by socks4, socks4a and socks5. Most likely you are interested
+      in Tor to increase your anonymity
+      level, therefore you should use socks5, to make sure DNS requests are
+      done through Tor and thus invisible to
+      your local network. Using socks4a would work too, but with socks5 you
+      get more precise error messages.

+
+      
Privoxy's main configuration file
+      is already prepared for Tor, if you
+      are using a default Tor configuration
+      and run it on the same system as Privoxy, you just have to edit the forwarding
+      section and uncomment the line:

+
+      
-          
-          
-          

         

-            Prev
-          
-          
-            Next
+          
+            
+#        forward-socks5t             /     127.0.0.1:9050 .
+
+

           		
         

       

-      

-    

-    

-      

-        4. Miscellaneous
-      

-      

-        

-          4.1. How much does Privoxy slow my browsing down?
-          This has to add extra time to browsing.
-        

-        

-          How much of an impact depends on many things, including the CPU of
-          the host system, how aggressive the configuration is, which
-          specific actions are being triggered, the size of the page, the
-          bandwidth of the connection, etc.
-        

-        

-          Overall, it should not slow you down any in real terms, and may
-          actually help speed things up since ads, banners and other junk are
-          not typically being retrieved and displayed. The actual processing
-          time required by Privoxy itself
-          for each page, is relatively small in the overall scheme of things,
-          and happens very quickly. This is typically more than offset by
-          time saved not downloading and rendering ad images and other junk
-          content (if ad blocking is being used).
-        

-        

-          "Filtering" content via the filter or deanimate-gifs actions may cause a perceived
-          slowdown, since the entire document needs to be buffered before
-          displaying. And on very large documents, filtering may have some
-          measurable impact. How much depends on the page size, the actual
-          definition of the filter(s), etc. See below. Most other actions
-          have little to no impact on speed.
-        

-        

-          Also, when filtering is enabled but zlib support isn't available,
-          compression is often disabled (see prevent-compression). This can have an impact on speed
-          as well, although it's probably smaller than you might think.
-          Again, the page size, etc. will determine how much of an impact.
-        

-      

-      

-        

-          4.2. I notice considerable delays in page
-          requests. What's wrong?
-        

-        

-          If you use any filter action, such as filtering banners by size,
-          web-bugs etc, or the deanimate-gifs action, the entire document must be
-          loaded into memory in order for the filtering mechanism to work,
-          and nothing is sent to the browser during this time.
-        

-        

-          The loading time typically does not really change much in real
-          numbers, but the feeling is different, because most browsers are
-          able to start rendering incomplete content, giving the user a
-          feeling of "it works". This effect is more noticeable on slower
-          dialup connections. Extremely large documents may have some impact
-          on the time to load the page where there is filtering being done.
-          But overall, the difference should be very minimal. If there is a
-          big impact, then probably some other situation is contributing
-          (like anti-virus software).
-        

-        

-          Filtering is automatically disabled for inappropriate MIME types.
-          But note that if the web server mis-reports the MIME type, then
-          content that should not be filtered, could be. Privoxy only knows how to differentiate
-          filterable content because of the MIME type as reported by the
-          server, or because of some configuration setting that
-          enables/disables filtering.
-        

-      

-      

-        

-          4.3. What are "http://config.privoxy.org/" and
-          "http://p.p/"?
-        

-        

-          http://config.privoxy.org/ is the address of Privoxy's built-in user interface, and
-          http://p.p/ is a shortcut
-          for it.
-        

-        

-          Since Privoxy sits between your
-          web browser and the Internet, it can simply intercept requests for
-          these addresses and answer them with its built-in "web server".
-        

-        

-          This also makes for a good test for your browser configuration: If
-          entering the URL http://config.privoxy.org/ takes you to a page saying
-          "This is Privoxy ...", everything is OK.
-          If you get a page saying "Privoxy is not
-          working" instead, then your browser didn't use Privoxy for the request, hence it could not be
-          intercepted, and you have accessed the real web site at config.privoxy.org.
-        

-        

-          Note that config.privoxy.org resolves to a public IP address. If
-          you use config.privoxy.org as ping or traceroute target you will
-          reach the system on the Internet (Privoxy can't intercept ICMP
-          requests). If you want to ping the system Privoxy runs on, you
-          should use its IP address or local DNS name (if it has got one).
-        

-      

-      

-        

-          4.4. How can I submit new ads, or report
-          problems?
-        

-        

-          Please see the Contact section for
-          various ways to interact with the developers.
-        

-      

-      

-        

-          4.5. If I do submit missed ads, will they be
-          included in future updates?
-        

-        

-          Whether such submissions are eventually included in the default.action configuration file depends on how
-          significant the issue is. We of course want to address any
-          potential problem with major, high-profile sites such as Google, Yahoo, etc. Any
-          site with global or regional reach, has a good chance of being a
-          candidate. But at the other end of the spectrum are any number of
-          smaller, low-profile sites such as for local clubs or schools.
-          Since their reach and impact are much less, they are best handled
-          by inclusion in the user's user.action,
-          and thus would be unlikely to be included.
-        

-      

-      

-        

-          4.6. Why doesn't anyone answer my support
-          request?
-        

-        

-          Rest assured that it has been read and considered. Why it is not
-          answered, could be for various reasons, including no one has a good
-          answer for it, no one has had time to yet investigate it
-          thoroughly, it has been reported numerous times already, or because
-          not enough information was provided to help us help you. Your
-          efforts are not wasted, and we do appreciate them.
-        

-      

-      

-        

-          4.7. How can I hide my IP address?
-        

-        

-          If you run both the browser and Privoxy locally, you cannot hide your IP
-          address with Privoxy or ultimately
-          any other software alone. The server needs to know your IP address
-          so that it knows where to send the responses back.
-        

-        

-          There are many publicly usable "anonymous" proxies out there, which
-          provide a further level of indirection between you and the web
-          server.
-        

-        

-          However, these proxies are called "anonymous" because you don't
-          need to authenticate, not because they would offer any real
-          anonymity. Most of them will log your IP address and make it
-          available to the authorities in case you violate the law of the
-          country they run in. In fact you can't even rule out that some of
-          them only exist to *collect* information on (those suspicious)
-          people with a more than average preference for privacy.
-        

-        

-          If you want to hide your IP address from most adversaries, you
-          should consider chaining Privoxy
-          with Tor.
-          The configuration details can be found in How do I use Privoxy
-          together with Tor section just
-          below.
-        

-      

-      

-        

-          4.8. Can Privoxy guarantee I am
-          anonymous?
-        

-        

-          No. Your chances of remaining anonymous are improved, but unless
-          you chain Privoxy with Tor or a similar proxy and know what
-          you're doing when it comes to configuring the rest of your system,
-          you should assume that everything you do on the Web can be traced
-          back to you.
-        

-        

-          Privoxy can remove various
-          information about you, and allows you more freedom to decide which sites you
-          can trust, and what details you want to reveal. But it neither
-          hides your IP address, nor can it guarantee that the rest of the
-          system behaves correctly. There are several possibilities how a web
-          sites can find out who you are, even if you are using a strict
-          Privoxy configuration and chained
-          it with Tor.
-        

-        

-          Most of Privoxy's
-          privacy-enhancing features can be easily subverted by an insecure
-          browser configuration, therefore you should use a browser that can
-          be configured to only execute code from trusted sites, and be
-          careful which sites you trust. For example there is no point in
-          having Privoxy modify the
-          User-Agent header, if websites can get all the information they
-          want through JavaScript, ActiveX, Flash, Java etc.
-        

-        

-          A few browsers disclose the user's email address in certain
-          situations, such as when transferring a file by FTP. Privoxy does not filter FTP. If you need this
-          feature, or are concerned about the mail handler of your browser
-          disclosing your email address, you might consider products such as
-          NSClean.
-        

-        

-          Browsers available only as binaries could use non-standard headers
-          to give out any information they can have access to: see the
-          manufacturer's license agreement. It's impossible to anticipate and
-          prevent every breach of privacy that might occur. The
-          professionally paranoid prefer browsers available as source code,
-          because anticipating their behavior is easier. Trust the source,
-          Luke!
-        

-      

-      

-        

-          4.9. A test site says I am not using a
-          Proxy.
-        

-        

-          Good! Actually, they are probably testing for some other kinds of
-          proxies. Hiding yourself completely would require additional steps.
-        

-      

-      

-        

-          4.10. How do I use Privoxy together with Tor?
-        

-        

-          Before you configure Privoxy to
-          use Tor,
-          please follow the User Manual chapters 2.
-          Installation and 5. Startup to make sure Privoxy itself is setup correctly.
-        

-        

-          If it is, refer to Tor's
-          extensive documentation to learn how to install Tor, and make sure Tor's logfile says that "Tor has successfully opened a circuit" and it "looks like client functionality is working".
-        

-        

-          If either Tor or Privoxy isn't working, their combination most
-          likely will neither. Testing them on their own will also help you
-          to direct problem reports to the right audience. If Privoxy isn't working, don't bother the Tor developers. If Tor isn't working, don't send bug reports to
-          the Privoxy Team.
-        

-        

-          If you verified that Privoxy and
-          Tor are working, it is time to
-          connect them. As far as Privoxy is
-          concerned, Tor is just another
-          proxy that can be reached by socks4, socks4a and socks5. Most
-          likely you are interested in Tor
-          to increase your anonymity level, therefore you should use socks5,
-          to make sure DNS requests are done through Tor and thus invisible to your local network.
-          Using socks4a would work too, but with socks5 you get more precise
-          error messages.
-        

-        

-          Privoxy's main configuration
-          file is already prepared for Tor, if you are using a default Tor configuration and run it on the same
-          system as Privoxy, you just have
-          to edit the forwarding section and uncomment the line:
-        

-        

-        

-        
-          
-            
-          
-        

-
-#        forward-socks5t             /     127.0.0.1:9050 .
-

-            

-
-        

-          Note that if you got Tor through one of the bundles, you may have
-          to change the port from 9050 to 9150 (or even another one). For
-          details, please check the documentation on the Tor website.
-        

-        

-          This is enough to reach the Internet, but additionally you might
-          want to uncomment the following forward rules, to make sure your
-          local network is still reachable through Privoxy:
-        

-        

-        

-        
-          
-            

-
+
+      
Note that if you got Tor through one of the bundles, you may have to
+      change the port from 9050 to 9150 (or even another one). For details,
+      please check the documentation on the Tor website.

+
+      
This is enough to reach the Internet, but additionally you might
+      want to uncomment the following forward rules, to make sure your local
+      network is still reachable through Privoxy:

+
+      
+        
+          
-          
-        

+            
 #        forward         192.168.*.*/     .
 #        forward            10.*.*.*/     .
 #        forward           127.*.*.*/     .
+
 

-            

-
-        

-          Unencrypted connections to systems in these address ranges will be
-          as (un)secure as the local network is, but the alternative is that
-          your browser can't reach the network at all. Then again, that may
-          actually be desired and if you don't know for sure that your
-          browser has to be able to reach the local network, there's no
-          reason to allow it.
-        

-        

-          If you want your browser to be able to reach servers in your local
-          network by using their names, you will need additional exceptions
-          that look like this:
-        

-        

-        

-        
-          
-            
+        
+      

-
+          

+
+      
Unencrypted connections to systems in these address ranges will be
+      as (un)secure as the local network is, but the alternative is that your
+      browser can't reach the network at all. Then again, that may actually
+      be desired and if you don't know for sure that your browser has to be
+      able to reach the local network, there's no reason to allow it.

+
+      
If you want your browser to be able to reach servers in your local
+      network by using their names, you will need additional exceptions that
+      look like this:

+
+      
+        
+          
-          
-        

+            
 #        forward           localhost/     .
+
 

-            

-
-        

-          Save the modified configuration file and open http://config.privoxy.org/show-status in your browser,
-          confirm that Privoxy has reloaded
-          its configuration and that there are no other forward lines, unless
-          you know that you need them. If everything looks good, refer to Tor Faq 4.2 to learn how to verify that you are
-          really using Tor.
-        

-        

-          Afterward, please take the time to at least skim through the rest
-          of Tor's documentation. Make sure
-          you understand what Tor does, why
-          it is no replacement for application level security, and why you
-          probably don't want to use it for unencrypted logins.
-        

-      
-      

-        

-          4.11. Might some things break because header
-          information or content is being altered?
-        

-        

-          Definitely. It is common for sites to use browser type, browser
-          version, HTTP header content, and various other techniques in order
-          to dynamically decide what to display and how to display it. What
-          you see, and what I see, might be very different. There are many,
-          many ways that this can be handled, so having hard and fast rules,
-          is tricky.
-        

-        

-          The "User-Agent" is sometimes used in
-          this way to identify the browser, and adjust content accordingly.
-        

-        

-          Also, different browsers use different encodings of non-English
-          characters, certain web servers convert pages on-the-fly according
-          to the User Agent header. Giving a "User
-          Agent" with the wrong operating system or browser
-          manufacturer causes some sites in these languages to be garbled;
-          Surfers to Eastern European sites should change it to something
-          closer. And then some page access counters work by looking at the
-          "Referer" header; they may fail or break
-          if unavailable. The weather maps of Intellicast have been blocked
-          by their server when no "Referer" or
-          cookie is provided, is another example. (But you can forge both
-          headers without giving information away). There are many other ways
-          things can go wrong when trying to fool a web server. The results
-          of which could inadvertently cause pages to load incorrectly,
-          partially, or even not at all. And there may be no obvious clues as
-          to just what went wrong, or why. Nowhere will there be a message
-          that says "Turn off fast-redirects or
-          else! "
-        

-        

-          Similar thoughts apply to modifying JavaScript, and, to a lesser
-          degree, HTML elements.
-        

-        

-          If you have problems with a site, you will have to adjust your
-          configuration accordingly. Cookies are probably the most likely
-          adjustment that may be required, but by no means the only one.
-        

-      

-      

-        

-          4.12. Can Privoxy act as a "caching" proxy to speed up web browsing?
-        

-        

-          No, it does not have this ability at all. You want something like
-          Squid or Polipo for this. And, yes, before you ask, Privoxy can co-exist with other kinds of
-          proxies like Squid. See the forwarding chapter in the user manual for
-          details.
-        

-      

-      

-        

-          4.13. What about as a firewall? Can Privoxy
-          protect me?
-        

-        

-          Not in the way you mean, or in the way some firewall vendors claim
-          they can. Privoxy can help protect
-          your privacy, but can't protect your system from intrusion
-          attempts. It is, of course, perfectly possible to use both.
-        

-      

-      

-        

-          4.14. I have large empty spaces / a checkerboard
-          pattern now where ads used to be. Why?
-        

-        

-          It is technically possible to eliminate banners and ads in a way
-          that frees their allocated page space. This could easily be done by
-          blocking with Privoxy's filters,
-          and eliminating the entire image references from the HTML page
-          source.
-        

-        

-          But, this would consume considerably more CPU resources (IOW, slow
-          things down), would likely destroy the layout of some web pages
-          which rely on the banners utilizing a certain amount of page space,
-          and might fail in other cases, where the screen space is reserved
-          (e.g. by HTML tables for instance). Also, making ads and banners
-          disappear without any trace complicates troubleshooting, and would
-          sooner or later be problematic.
-        

-        

-          The better alternative is to instead let them stay, and block the
-          resulting requests for the banners themselves as is now the case.
-          This leaves either empty space, or the familiar checkerboard
-          pattern.
-        

-        

-          So the developers won't support this in the default configuration,
-          but you can of course define appropriate filters yourself to
-          achieve this.
-        

-      

-      

-        

-          4.15. How can Privoxy filter Secure (HTTPS) URLs?
-        

-        

-          Since secure HTTP connections are encrypted SSL sessions between
-          your browser and the secure site, and are meant to be reliably
-          secure, there
-          is little that Privoxy can do but
-          hand the raw gibberish data though from one end to the other
-          unprocessed.
-        

-        

-          The only exception to this is blocking by host patterns, as the
-          client needs to tell Privoxy the
-          name of the remote server, so that Privoxy can establish the connection. If that
-          name matches a host-only pattern, the connection will be blocked.
-        

-        

-          As far as ad blocking is concerned, this is less of a restriction
-          than it may seem, since ad sources are often identifiable by the
-          host name, and often the banners to be placed in an encrypted page
-          come unencrypted nonetheless for efficiency reasons, which exposes
-          them to the full power of Privoxy's ad blocking.
-        

-        

-          "Content cookies" (those that are
-          embedded in the actual HTML or JS page content, see filter{content-cookies}), in an SSL transaction
-          will be impossible to block under these conditions. Fortunately,
-          this does not seem to be a very common scenario since most cookies
-          come by traditional means.
-        

-      

-      

-        

-          4.16. Privoxy runs as a "server". How secure is it? Do I need to take any
-          special precautions?
-        

-        

-          On Unix-like systems, Privoxy can
-          run as a non-privileged user, which is how we recommend it be run.
-          Also, by default Privoxy listens
-          to requests from "localhost" only.
-        

-        

-          The server aspect of Privoxy is
-          not itself directly exposed to the Internet in this configuration.
-          If you want to have Privoxy serve
-          as a LAN proxy, this will have to be opened up to allow for LAN
-          requests. In this case, we'd recommend you specify only the LAN
-          gateway address, e.g. 192.168.1.1, in the main Privoxy configuration file and check all access control and security options. All LAN hosts can
-          then use this as their proxy address in the browser proxy
-          configuration, but Privoxy will
-          not listen on any external interfaces. ACLs can be defined in
-          addition, and using a firewall is always good too. Better safe than
-          sorry.
-        

-      

-      

-        

-          4.17. Can I temporarily disable Privoxy?
-        

-        

-          Privoxy doesn't have a transparent
-          proxy mode, but you can toggle off blocking and content filtering.
-        

-        

-          The easiest way to do that is to point your browser to the remote
-          toggle URL: http://config.privoxy.org/toggle.
-        

-        

-          See the Bookmarklets section of the User
-          Manual for an easy way to access this feature. Note that this
-          is a feature that may need to be enabled in the main config file.
-        

-      

-      

-        

-          4.18. When "disabled" is Privoxy totally out of the
-          picture?
-        

-        

-          No, this just means all optional filtering and actions are
-          disabled. Privoxy is still acting
-          as a proxy, but just doing less of the things that Privoxy would normally be expected to do. It
-          is still a "middle-man" in the
-          interaction between your browser and web sites. See below to bypass
-          the proxy.
-        

-      

-      

-        

-          4.19. How can I tell Privoxy to totally ignore
-          certain sites?
-        

-        

-          Bypassing a proxy, or proxying based on arbitrary criteria, is
-          purely a browser configuration issue, not a Privoxy issue. Modern browsers typically do
-          have settings for not proxying certain sites. Check your browser's
-          help files.
-        

-      

-      

-        

-          4.20. My logs show Privoxy "crunches" ads, but also its own internal CGI pages.
-          What is a "crunch"?
-        

-        

-          A "crunch" simply means Privoxy intercepted something, nothing more. Often this is
-          indeed ads or banners, but Privoxy
-          uses the same mechanism for trapping requests for its own internal
-          pages. For instance, a request for Privoxy's configuration page at: http://config.privoxy.org, is intercepted (i.e. it does
-          not go out to the 'net), and the familiar CGI configuration is
-          returned to the browser, and the log consequently will show a "crunch".
-        

-        

-          Since version 3.0.7, Privoxy will also log the crunch reason. If
-          you are using an older version you might want to upgrade.
-        

-      

-      

-        

-          4.21. Can Privoxy affect files that I download
-          from a webserver? FTP server?
-        

-        

-          From the webserver's perspective, there is no difference between
-          viewing a document (i.e. a page), and downloading a file. The same
-          is true of Privoxy. If there is a
-          match for a block pattern, it will still be blocked, and of
-          course this is obvious.
-        

-        

-          Filtering is potentially more of a concern since the results are
-          not always so obvious, and the effects of filtering are there
-          whether the file is simply viewed, or downloaded. And potentially
-          whether the content is some obnoxious advertisement, or Mr. Jimmy's
-          latest/greatest source code jewel. Of course, one of these
-          presumably is "bad" content that we
-          don't want, and the other is "good"
-          content that we do want. Privoxy
-          is blind to the differences, and can only distinguish "good from bad" by the configuration parameters
-          we give it.
-        

-        

-          Privoxy knows the differences in
-          files according to the "Content Type" as
-          reported by the webserver. If this is reported accurately (e.g.
-          "application/zip" for a zip archive),
-          then Privoxy knows to ignore these
-          where appropriate. Privoxy
-          potentially can filter HTML as well as plain text documents,
-          subject to configuration parameters of course. Also, documents that
-          are of an unknown type (generally assumed to be "text/plain") can be filtered, as will those that
-          might be incorrectly reported by the webserver. If such a file is a
-          downloaded file that is intended to be saved to disk, then any
-          content that might have been altered by filtering, will be saved
-          too, for these (probably rare) cases.
-        

-        

-          Note that versions later than 3.0.2 do NOT filter document types
-          reported as "text/plain". Prior to this,
-          Privoxy did filter this document
-          type.
-        

-        

-          In short, filtering is "ON" if a) the
-          content type as reported by the webserver is appropriate and b) the
-          configuration allows it (or at least does not disallow it). That's
-          it. There is no magic cookie anywhere to say this is "good" and this is "bad".
-          It's the configuration that lets it all happen or not.
-        

-        

-          If you download text files, you probably do not want these to be
-          filtered, particularly if the content is source code, or other
-          critical content. Source code sometimes might be mistaken for
-          Javascript (i.e. the kind that might open a pop-up window). It is
-          recommended to turn off filtering for download sites (particularly
-          if the content may be plain text files and you are using version
-          3.0.2 or earlier) in your user.action
-          file. And also, for any site or page where making any changes at all to the
-          content is to be avoided.
-        

-        

-          Privoxy does not do FTP at all,
-          only HTTP and HTTPS (SSL) protocols.
-        

-      

-      

-        

-          4.22. I just downloaded a Perl script, and
-          Privoxy altered it! Yikes, what is wrong!
-        

-        

-          Please read above.
-        

-      

-      

-        

-          4.23. Should I continue to use a "HOSTS" file for ad-blocking?
-        

-        

-          One time-tested technique to defeat common ads is to trick the
-          local DNS system by giving a phony IP address for the ad generator
-          in the local HOSTS file, typically using
-          127.0.0.1, aka localhost. This effectively blocks the ad.
-        

-        

-          There is no reason to use this technique in conjunction with Privoxy. Privoxy does essentially the same thing, much
-          more elegantly and with much more flexibility. A large HOSTS file, in fact, not only duplicates effort,
-          but may get in the way and seriously slow down your system. It is
-          recommended to remove such entries from your HOSTS file. If you think your hosts list is
-          neglected by Privoxy's
-          configuration, consider adding your list to your user.action file:
-        

-        

-        

-        
-          
-            
+        
+      

-
+          

+
+      
Save the modified configuration file and open http://config.privoxy.org/show-status in your browser,
+      confirm that Privoxy has reloaded its
+      configuration and that there are no other forward lines, unless you
+      know that you need them. If everything looks good, refer to Tor Faq 4.2 to learn how to verify that you are
+      really using Tor.

+
+      
Afterward, please take the time to at least skim through the rest of
+      Tor's documentation. Make sure you
+      understand what Tor does, why it is no
+      replacement for application level security, and why you probably don't
+      want to use it for unencrypted logins.

+    

+
+    

+      
4.11. Might some
+      things break because header information or content is being
+      altered?

+
+      
Definitely. It is common for sites to use browser type, browser
+      version, HTTP header content, and various other techniques in order to
+      dynamically decide what to display and how to display it. What you see,
+      and what I see, might be very different. There are many, many ways that
+      this can be handled, so having hard and fast rules, is tricky.

+
+      
The "User-Agent" is sometimes used in
+      this way to identify the browser, and adjust content accordingly.

+
+      
Also, different browsers use different encodings of non-English
+      characters, certain web servers convert pages on-the-fly according to
+      the User Agent header. Giving a "User Agent"
+      with the wrong operating system or browser manufacturer causes some
+      sites in these languages to be garbled; Surfers to Eastern European
+      sites should change it to something closer. And then some page access
+      counters work by looking at the "Referer"
+      header; they may fail or break if unavailable. The weather maps of
+      Intellicast have been blocked by their server when no "Referer" or cookie is provided, is another example.
+      (But you can forge both headers without giving information away). There
+      are many other ways things can go wrong when trying to fool a web
+      server. The results of which could inadvertently cause pages to load
+      incorrectly, partially, or even not at all. And there may be no obvious
+      clues as to just what went wrong, or why. Nowhere will there be a
+      message that says "Turn off fast-redirects or
+      else! "

+
+      
Similar thoughts apply to modifying JavaScript, and, to a lesser
+      degree, HTML elements.

+
+      
If you have problems with a site, you will have to adjust your
+      configuration accordingly. Cookies are probably the most likely
+      adjustment that may be required, but by no means the only one.

+    

+
+    

+      
4.12. Can Privoxy act
+      as a "caching" proxy to speed up web
+      browsing?

+
+      
No, it does not have this ability at all. You want something like
+      Squid or
+      Polipo for this. And, yes, before you ask, Privoxy can co-exist with other kinds of proxies
+      like Squid. See the forwarding
+      chapter in the user manual for details.

+    

+
+    

+      
4.13. What about as
+      a firewall? Can Privoxy protect me?

+
+      
Not in the way you mean, or in the way some firewall vendors claim
+      they can. Privoxy can help protect
+      your privacy, but can't protect your system from intrusion attempts. It
+      is, of course, perfectly possible to use both.

+    

+
+    

+      
4.14. I have large empty
+      spaces / a checkerboard pattern now where ads used to be. Why?

+
+      
It is technically possible to eliminate banners and ads in a way
+      that frees their allocated page space. This could easily be done by
+      blocking with Privoxy's filters, and
+      eliminating the entire image references from the HTML page
+      source.

+
+      
But, this would consume considerably more CPU resources (IOW, slow
+      things down), would likely destroy the layout of some web pages which
+      rely on the banners utilizing a certain amount of page space, and might
+      fail in other cases, where the screen space is reserved (e.g. by HTML
+      tables for instance). Also, making ads and banners disappear without
+      any trace complicates troubleshooting, and would sooner or later be
+      problematic.

+
+      
The better alternative is to instead let them stay, and block the
+      resulting requests for the banners themselves as is now the case. This
+      leaves either empty space, or the familiar checkerboard pattern.

+
+      
So the developers won't support this in the default configuration,
+      but you can of course define appropriate filters yourself to achieve
+      this.

+    

+
+    

+      
4.15. How can Privoxy filter
+      Secure (HTTPS) URLs?

+
+      
Since secure HTTP connections are encrypted SSL sessions between
+      your browser and the secure site, and are meant to be reliably
+      secure, there is
+      little that Privoxy can do but hand
+      the raw gibberish data though from one end to the other
+      unprocessed.

+
+      
The only exception to this is blocking by host patterns, as the
+      client needs to tell Privoxy the name
+      of the remote server, so that Privoxy
+      can establish the connection. If that name matches a host-only pattern,
+      the connection will be blocked.

+
+      
As far as ad blocking is concerned, this is less of a restriction
+      than it may seem, since ad sources are often identifiable by the host
+      name, and often the banners to be placed in an encrypted page come
+      unencrypted nonetheless for efficiency reasons, which exposes them to
+      the full power of Privoxy's ad
+      blocking.

+
+      
"Content cookies" (those that are
+      embedded in the actual HTML or JS page content, see filter{content-cookies}), in an SSL transaction will be
+      impossible to block under these conditions. Fortunately, this does not
+      seem to be a very common scenario since most cookies come by
+      traditional means.

+    

+
+    

+      
4.16. Privoxy runs as a
+      "server". How secure is it? Do I need to
+      take any special precautions?

+
+      
On Unix-like systems, Privoxy can
+      run as a non-privileged user, which is how we recommend it be run.
+      Also, by default Privoxy listens to
+      requests from "localhost" only.

+
+      
The server aspect of Privoxy is not
+      itself directly exposed to the Internet in this configuration. If you
+      want to have Privoxy serve as a LAN
+      proxy, this will have to be opened up to allow for LAN requests. In
+      this case, we'd recommend you specify only the LAN gateway address,
+      e.g. 192.168.1.1, in the main Privoxy
+      configuration file and check all access
+      control and security options. All LAN hosts can then use this as
+      their proxy address in the browser proxy configuration, but
+      Privoxy will not listen on any
+      external interfaces. ACLs can be defined in addition, and using a
+      firewall is always good too. Better safe than sorry.

+    

+
+    

+      
4.17. Can I
+      temporarily disable Privoxy?

+
+      
Privoxy doesn't have a transparent
+      proxy mode, but you can toggle off blocking and content filtering.

+
+      
The easiest way to do that is to point your browser to the remote
+      toggle URL: http://config.privoxy.org/toggle.

+
+      
See the Bookmarklets section of the User
+      Manual for an easy way to access this feature. Note that this is a
+      feature that may need to be enabled in the main config file.

+    

+
+    

+      
4.18. When
+      "disabled" is Privoxy totally out of the
+      picture?

+
+      
No, this just means all optional filtering and actions are disabled.
+      Privoxy is still acting as a proxy,
+      but just doing less of the things that Privoxy would normally be expected to do. It is
+      still a "middle-man" in the interaction
+      between your browser and web sites. See below to bypass the proxy.

+    

+
+    

+      
4.19. How can I tell
+      Privoxy to totally ignore certain sites?

+
+      
Bypassing a proxy, or proxying based on arbitrary criteria, is
+      purely a browser configuration issue, not a Privoxy issue. Modern browsers typically do have
+      settings for not proxying certain sites. Check your browser's help
+      files.

+    

+
+    

+      
4.20. My logs show
+      Privoxy "crunches" ads, but also its own
+      internal CGI pages. What is a "crunch"?

+
+      
A "crunch" simply means Privoxy intercepted something, nothing more.
+      Often this is indeed ads or banners, but Privoxy uses the same mechanism for trapping
+      requests for its own internal pages. For instance, a request for
+      Privoxy's configuration page at:
+      http://config.privoxy.org, is intercepted (i.e. it does not
+      go out to the 'net), and the familiar CGI configuration is returned to
+      the browser, and the log consequently will show a "crunch".

+
+      
Since version 3.0.7, Privoxy will also log the crunch reason. If you
+      are using an older version you might want to upgrade.

+    

+
+    

+      
4.21. Can Privoxy
+      affect files that I download from a webserver? FTP server?

+
+      
From the webserver's perspective, there is no difference between
+      viewing a document (i.e. a page), and downloading a file. The same is
+      true of Privoxy. If there is a match
+      for a block
+      pattern, it will still be blocked, and of course this is obvious.

+
+      
Filtering is potentially more of a concern since the results are not
+      always so obvious, and the effects of filtering are there whether the
+      file is simply viewed, or downloaded. And potentially whether the
+      content is some obnoxious advertisement, or Mr. Jimmy's latest/greatest
+      source code jewel. Of course, one of these presumably is "bad" content that we don't want, and the other is
+      "good" content that we do want. Privoxy is blind to the differences, and can only
+      distinguish "good from bad" by the
+      configuration parameters we give it.

+
+      
Privoxy knows the differences in
+      files according to the "Content Type" as
+      reported by the webserver. If this is reported accurately (e.g.
+      "application/zip" for a zip archive), then
+      Privoxy knows to ignore these where
+      appropriate. Privoxy potentially can
+      filter HTML as well as plain text documents, subject to configuration
+      parameters of course. Also, documents that are of an unknown type
+      (generally assumed to be "text/plain") can
+      be filtered, as will those that might be incorrectly reported by the
+      webserver. If such a file is a downloaded file that is intended to be
+      saved to disk, then any content that might have been altered by
+      filtering, will be saved too, for these (probably rare) cases.

+
+      
Note that versions later than 3.0.2 do NOT filter document types
+      reported as "text/plain". Prior to this,
+      Privoxy did filter this document
+      type.

+
+      
In short, filtering is "ON" if a) the
+      content type as reported by the webserver is appropriate and b) the configuration
+      allows it (or at least does not disallow it). That's it. There is no
+      magic cookie anywhere to say this is "good"
+      and this is "bad". It's the configuration
+      that lets it all happen or not.

+
+      
If you download text files, you probably do not want these to be
+      filtered, particularly if the content is source code, or other critical
+      content. Source code sometimes might be mistaken for Javascript (i.e.
+      the kind that might open a pop-up window). It is recommended to turn
+      off filtering for download sites (particularly if the content may be
+      plain text files and you are using version 3.0.2 or earlier) in your
+      user.action file. And also, for any site or
+      page where making any changes at all to the content is to be
+      avoided.

+
+      
Privoxy does not do FTP at all,
+      only HTTP and HTTPS (SSL) protocols.

+    

+
+    

+      
4.22. I just
+      downloaded a Perl script, and Privoxy altered it! Yikes, what is
+      wrong!

+
+      
Please read above.

+    

+
+    

+      
4.23. Should I
+      continue to use a "HOSTS" file for
+      ad-blocking?

+
+      
One time-tested technique to defeat common ads is to trick the local
+      DNS system by giving a phony IP address for the ad generator in the
+      local HOSTS file, typically using 127.0.0.1, aka localhost. This
+      effectively blocks the ad.

+
+      
There is no reason to use this technique in conjunction with
+      Privoxy. Privoxy does essentially the same thing, much more
+      elegantly and with much more flexibility. A large HOSTS file, in fact, not only duplicates effort, but
+      may get in the way and seriously slow down your system. It is
+      recommended to remove such entries from your HOSTS file. If you think your hosts list is neglected
+      by Privoxy's configuration, consider
+      adding your list to your user.action
+      file:

+
+      
+        
+          
-          
-        

+            
   { +block }
    www.ad.example1.com
    ad.example2.com
    ads.galore.example.com
    etc.example.com
 

-            

-      

-      

-        

-          4.24. Where can I find more information about
-          Privoxy and related issues?
-        

-        

-          Other references and sites of interest to Privoxy users:
-        

-        

-        

-        
-          
-            
-              
-            
-          
-        

-                https://www.privoxy.org/, the Privoxy Home page.
-              

-        
-          
-            
-              
-            
-          
-        

-                https://www.privoxy.org/faq/, the Privoxy FAQ.
-              

-        
-          
-            
-              
-            
-          
-        

-                https://www.privoxy.org/developer-manual/, the
-                Privoxy developer manual.
-              

-        
-          
-            
-              
-            
-          
-        

-                https://sourceforge.net/projects/ijbswa/, the
-                Project Page for Privoxy on
-                SourceForge.
-              

-        
-          
-            
-              
-            
-          
-        

-                http://config.privoxy.org/, the web-based user
-                interface. Privoxy must be
-                running for this to work. Shortcut: http://p.p/
-              

-        
-          
-            
-              
-            
-          
-        

-                https://sourceforge.net/tracker/?group_id=11118&atid=460288,
-                to submit "misses" and other
-                configuration related suggestions to the developers.
-              

-        
-          
-            
-              
-            
-          
-        

-                http://www.squid-cache.org/, a popular caching
-                proxy, which is often used together with Privoxy.
-              

-        
-          
-            
-              
-            
-          
-        

-                http://www.pps.univ-paris-diderot.fr/~jch/software/polipo/,
-                Polipo is a caching proxy
-                with advanced features like pipelining, multiplexing and
-                caching of partial instances. In many setups it can be used
-                as Squid replacement.
-              

-        
-          
-            
-              
-            
-          
-        

-                https://www.torproject.org/, Tor can help anonymize web browsing, web
-                publishing, instant messaging, IRC, SSH, and other
-                applications.
-              

-      

-      

-        

-          4.25. I've noticed that Privoxy changes "Microsoft" to "MicroSuck"! Why are you manipulating my
-          browsing?
-        

-        

-          We're not. The text substitutions that you are seeing are disabled
-          in the default configuration as shipped. You have either manually
-          activated the "fun" filter which is clearly labeled "Text replacements for subversive browsing
-          fun!" or you are using an older Privoxy version and have
-          implicitly activated it by choosing the "Advanced" profile in the web-based editor. Please
-          upgrade.
-        

-      

-      

-        

-          4.26. Does Privoxy produce "valid" HTML (or XHTML)?
-        

-        

-          Privoxy generates HTML in both its own "templates", and possibly whenever there are text
-          substitutions via a Privoxy
-          filter. While this should always conform to the HTML 4.01
-          specifications, it has not been validated against this or any other
-          standard.
-        

-      

-      

-        

-          4.27. How did you manage to get Privoxy
-          on my computer without my consent?
-        

-        

-          We didn't. We make Privoxy available for download, but we don't go
-          around installing it on other people's systems behind their back.
-          If you discover Privoxy running on your system and are sure you
-          didn't install it yourself, somebody else did. You may not even be
-          running the real Privoxy, but maybe something else that only
-          pretends to be Privoxy, or maybe something that is based on the
-          real Privoxy, but has been modified.
-        

-        

-          Lately there have been reports of problems with some kind of
-          "parental control" software based on Privoxy that came preinstalled
-          on certain ASUS Netbooks. The problems described are
-          inconsistent with the behaviour of official Privoxy versions, which
-          suggests that the preinstalled software may contain vendor
-          modifications that we don't know about and thus can't debug.
-        

-        

-          Privoxy's license allows vendor
-          modifications, but the vendor has to comply with the license, which
-          involves informing the user about the changes and to make the
-          changes available under the same license as Privoxy itself.
-        

-        

-          If you are having trouble with a modified Privoxy version, please
-          try to talk to whoever made the modifications before reporting the
-          problem to us. Please also try to convince whoever made the
-          modifications to talk to us. If you think somebody gave you a
-          modified Privoxy version without complying to the license, please
-          let us know.
-        

-      

-    
-    

-      

-      
-        
-          
-          
-          
-        
-        
-          
-          
-          

-            Prev
-          
-            Home
-          
-            Next
-          

-            Configuration
-          
-             
-          
-            Troubleshooting
           
         

       

     

-  
-
 
+    

+      
4.24. Where can I find
+      more information about Privoxy and related issues?

+
+      
Other references and sites of interest to Privoxy users:

+
+      
+        
+          
+            
+          
+        
+      
https://www.privoxy.org/, the Privoxy Home page.

+
+      
+        
+          
+            
+          
+        
+      
https://www.privoxy.org/faq/, the Privoxy FAQ.

+
+      
+        
+          
+            
+          
+        
+      
https://www.privoxy.org/developer-manual/, the
+            Privoxy developer manual.

+
+      
+        
+          
+            
+          
+        
+      
https://sourceforge.net/projects/ijbswa/, the Project
+            Page for Privoxy on SourceForge.

+
+      
+        
+          
+            
+          
+        
+      
http://config.privoxy.org/, the web-based user
+            interface. Privoxy must be
+            running for this to work. Shortcut: http://p.p/

+
+      
+        
+          
+            
+          
+        
+      
https://sourceforge.net/tracker/?group_id=11118&atid=460288,
+            to submit "misses" and other
+            configuration related suggestions to the developers.

+
+      
+        
+          
+            
+          
+        
+      
http://www.squid-cache.org/, a popular caching proxy,
+            which is often used together with Privoxy.

+
+      
+        
+          
+            
+          
+        
+      
http://www.pps.univ-paris-diderot.fr/~jch/software/polipo/,
+            Polipo is a caching proxy with
+            advanced features like pipelining, multiplexing and caching of
+            partial instances. In many setups it can be used as Squid replacement.

+
+      
+        
+          
+            
+          
+        
+      
https://www.torproject.org/, Tor can help anonymize web browsing, web
+            publishing, instant messaging, IRC, SSH, and other
+            applications.

+    

+
+    

+      
4.25. I've noticed
+      that Privoxy changes "Microsoft" to
+      "MicroSuck"! Why are you manipulating my
+      browsing?

+
+      
We're not. The text substitutions that you are seeing are disabled
+      in the default configuration as shipped. You have either manually
+      activated the "fun"
+      filter which is clearly labeled "Text replacements
+      for subversive browsing fun!" or you are using an older Privoxy
+      version and have implicitly activated it by choosing the "Advanced" profile in the web-based editor. Please
+      upgrade.

+    

+
+    

+      
4.26. Does Privoxy produce
+      "valid" HTML (or XHTML)?

+
+      
Privoxy generates HTML in both its own "templates", and possibly whenever there are text
+      substitutions via a Privoxy filter.
+      While this should always conform to the HTML 4.01 specifications, it
+      has not been validated against this or any other standard.

+    

+
+    

+      
4.27. How did you manage to get Privoxy on my
+      computer without my consent?

+
+      
We didn't. We make Privoxy available for download, but we don't go
+      around installing it on other people's systems behind their back. If
+      you discover Privoxy running on your system and are sure you didn't
+      install it yourself, somebody else did. You may not even be running the
+      real Privoxy, but maybe something else that only pretends to be
+      Privoxy, or maybe something that is based on the real Privoxy, but has
+      been modified.

+
+      
Lately there have been reports of problems with some kind of
+      "parental control" software based on Privoxy that came preinstalled on
+      certain ASUS Netbooks. The problems described are inconsistent with
+      the behaviour of official Privoxy versions, which suggests that the
+      preinstalled software may contain vendor modifications that we don't
+      know about and thus can't debug.

+
+      
Privoxy's license allows vendor
+      modifications, but the vendor has to comply with the license, which
+      involves informing the user about the changes and to make the changes
+      available under the same license as Privoxy itself.

+
+      
If you are having trouble with a modified Privoxy version, please
+      try to talk to whoever made the modifications before reporting the
+      problem to us. Please also try to convince whoever made the
+      modifications to talk to us. If you think somebody gave you a modified
+      Privoxy version without complying to the license, please let us
+      know.

+    

+  
+
+  

+    

+
+    
+      
+        
+
+        
+
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
PrevHomeNext
Configuration Troubleshooting

+  

+
+
diff --git a/doc/webserver/faq/trouble.html b/doc/webserver/faq/trouble.html
index d1c6e145..28949efe 100644
--- a/doc/webserver/faq/trouble.html
+++ b/doc/webserver/faq/trouble.html
@@ -1,156 +1,142 @@
-
+
+
 
-  
-    
-      Troubleshooting
-    
-    
-    
-    
-    
-    
-    
-  
-  
-    

-      
-        
-          
-        
-        
-          
-          
-          
-        
-      

-            Privoxy Frequently Asked Questions
-          

-            Prev
-          
-          
-            Next
-          

-      

+
+  Troubleshooting
+  
+  
+  
+  
+  
+  
+
+
+
+  

+    
+      
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
Privoxy Frequently Asked
+        Questions
PrevNext

+    

+  

+
+  

+    
5.
+    Troubleshooting

+
+    

+      
5.1. I cannot connect
+      to any websites. Or, I am getting "connection
+      refused" message with every web page. Why?

+
+      
There are several possibilities:

+
+      
    
+        
  • 
+          
    Privoxy is not running.
+          Solution: verify that Privoxy is
+          installed correctly, has not crashed, and is indeed running. Turn
+          on Privoxy's logging, and look at
+          the logs to see what they say.
    
+        
    • 
+
+        
  • 
+          
    Or your browser is configured for a different port than what
+          Privoxy is using. Solution: verify
+          that Privoxy and your browser are
+          set to the same port (listen-address).
    
+        
    • 
+
+        
  • 
+          
    Or if using a forwarding rule, you have a configuration problem
+          or a problem with a host in the forwarding chain. Solution:
+          temporarily alter your configuration and take the forwarders out of
+          the equation.
    
+        
    • 
+
+        
  • 
+          
    Or you have a firewall that is interfering and blocking you.
+          Solution: try disabling or removing the firewall as a simple
+          test.
    
+        
    • 
+      

     

-    

-      

-        5. Troubleshooting
-      

-      

-        

-          5.1. I cannot connect to any websites. Or, I am
-          getting "connection refused" message
-          with every web page. Why?
-        

-        

-          There are several possibilities:
-        

-        
    
-          
  • 
-            
    
-              Privoxy is not running.
-              Solution: verify that Privoxy
-              is installed correctly, has not crashed, and is indeed running.
-              Turn on Privoxy's logging, and
-              look at the logs to see what they say.
-            
    
-          
    • 
-          
  • 
-            
    
-              Or your browser is configured for a different port than what
-              Privoxy is using. Solution:
-              verify that Privoxy and your
-              browser are set to the same port (listen-address).
-            
    
-          
    • 
-          
  • 
-            
    
-              Or if using a forwarding rule, you have a configuration problem
-              or a problem with a host in the forwarding chain. Solution:
-              temporarily alter your configuration and take the forwarders
-              out of the equation.
-            
    
-          
    • 
-          
  • 
-            
    
-              Or you have a firewall that is interfering and blocking you.
-              Solution: try disabling or removing the firewall as a simple
-              test.
-            
    
-          
    • 
-        

-      

-      

-        

-          5.2. Why am I getting a 503 Error
-          (WSAECONNREFUSED) on every page?
-        

-        

-          More than likely this is a problem with your TCP/IP networking.
-          ZoneAlarm has been reported to cause this symptom -- even if not
-          running! The solution is to either fight the ZA configuration, or
-          uninstall ZoneAlarm, and then find something better behaved in its
-          place. Other personal firewall type products may cause similar type
-          problems if not configured correctly.
-        

-      

-      

-        

-          5.3. I just added a new rule, but the steenkin ad
-          is still getting through. How?
-        

-        

-          If the ad had been displayed before you added its URL, it will
-          probably be held in the browser's cache for some time, so it will
-          be displayed without the need for any request to the server, and
-          Privoxy will not be involved.
-          Flush the browser's caches, and then try again.
-        

-        

-          If this doesn't help, you probably have an error in the rule you
-          applied. Try pasting the full URL of the offending ad into http://config.privoxy.org/show-url-info and see if it
-          really matches your new rule. Blocking ads is like blocking spam: a
-          lot of tinkering is required to stay ahead of the game. And
-          remember you need to block the URL of the ad in question, which may
-          be entirely different from the site URL itself. Most ads are hosted
-          on different servers than the main site itself. If you right-click
-          on the ad, you should be able to get all the relevant information
-          you need. Alternately, you can find the correct URL by looking at
-          Privoxy's logs (you may need to
-          enable logging in the main config file if its disabled).
-        

-        

-          Below is a slightly modified real-life log snippet that originates
-          with one requested URL: www.example.com
-          (name of site was changed for this example, the number of requests
-          is real). You can see in this the complexity of what goes into
-          making up this one "page". There are
-          eight different domains involved here, with thirty two separate
-          URLs requested in all, making up all manner of images, Shockwave
-          Flash, JavaScript, CSS stylesheets, scripts, and other related
-          content. Some of this content is obviously "good" or "bad", but not
-          all. Many of the more questionable looking requests, are going to
-          outside domains that seem to be identifying themselves with
-          suspicious looking names, making our job a little easier. Privoxy has "crunched" (meaning caught and BLOCKED) quite a few
-          items in this example, but perhaps missed a few as well.
-        

-        
-          
-            
+          
+        

-
+
+    

+      
5.2. Why am I
+      getting a 503 Error (WSAECONNREFUSED) on every page?

+
+      
More than likely this is a problem with your TCP/IP networking.
+      ZoneAlarm has been reported to cause this symptom -- even if not
+      running! The solution is to either fight the ZA configuration, or
+      uninstall ZoneAlarm, and then find something better behaved in its
+      place. Other personal firewall type products may cause similar type
+      problems if not configured correctly.

+    

+
+    

+      
5.3. I just added a
+      new rule, but the steenkin ad is still getting through. How?

+
+      
If the ad had been displayed before you added its URL, it will
+      probably be held in the browser's cache for some time, so it will be
+      displayed without the need for any request to the server, and
+      Privoxy will not be involved. Flush
+      the browser's caches, and then try again.

+
+      
If this doesn't help, you probably have an error in the rule you
+      applied. Try pasting the full URL of the offending ad into http://config.privoxy.org/show-url-info and see if it really
+      matches your new rule. Blocking ads is like blocking spam: a lot of
+      tinkering is required to stay ahead of the game. And remember you need
+      to block the URL of the ad in question, which may be entirely different
+      from the site URL itself. Most ads are hosted on different servers than
+      the main site itself. If you right-click on the ad, you should be able
+      to get all the relevant information you need. Alternately, you can find
+      the correct URL by looking at Privoxy's logs (you may need to enable logging in
+      the main config file if its disabled).

+
+      
Below is a slightly modified real-life log snippet that originates
+      with one requested URL: www.example.com (name
+      of site was changed for this example, the number of requests is real).
+      You can see in this the complexity of what goes into making up this one
+      "page". There are eight different domains
+      involved here, with thirty two separate URLs requested in all, making
+      up all manner of images, Shockwave Flash, JavaScript, CSS stylesheets,
+      scripts, and other related content. Some of this content is obviously
+      "good" or "bad",
+      but not all. Many of the more questionable looking requests, are going
+      to outside domains that seem to be identifying themselves with
+      suspicious looking names, making our job a little easier. Privoxy has "crunched"
+      (meaning caught and BLOCKED) quite a few items in this example, but
+      perhaps missed a few as well.

+
+      
+        
+          
-          
-        

+            
 Request: www.example.com/
 Request: www.example.com/favicon.ico
 Request: img.example.com/main.css
@@ -185,694 +171,603 @@ Request: 66.70.21.80/img/pixel.gif
 Request: www.adtrak.net/adlog.php?bannerid=1309&clientid=439&zoneid=58&source=Ua&block=86400 crunch! (Blocked)
 Request: 66.70.21.80/scripts/click.php?hid=a71b9f6504b0c5681fa5&si=Ua
 

-            

-
-        

-          Despite 12 out of 32 requests being blocked, the page looked, and
-          seemed to behave perfectly "normal"
-          (minus some ads, of course).
-        

-      

-      

-        

-          5.4. One of my favorite sites does not work with
-          Privoxy. What can I do?
-        

-        

-          First verify that it is indeed a Privoxy problem, by toggling off Privoxy through http://config.privoxy.org/toggle (the toggle feature may
-          need to be enabled in the main config),
-          and then shift-reloading the problem page (i.e. holding down the
-          shift key while clicking reload. Alternatively, flush your
-          browser's disk and memory caches).
-        

-        

-          If the problem went away, we know we have a configuration related
-          problem. Now go to http://config.privoxy.org/show-url-info and paste the
-          full URL of the page in question into the prompt. See which actions
-          are being applied to the URL, and which matches in which actions
-          files are responsible for that. It might be helpful also to look at
-          your logs for this site too, to see what else might be happening
-          (note: logging may need to be enabled in the main config file).
-          Many sites are complex and require a number of related pages to
-          help present their content. Look at what else might be used by the
-          page in question, and what of that might be required. Now, armed with
-          this information, go to http://config.privoxy.org/show-status and select the
-          appropriate actions files for editing.
-        

-        

-          You can now either look for a section which disables the actions
-          that you suspect to cause the problem and add a pattern for your
-          site there, or make up a completely new section for your site. In
-          any case, the recommended way is to disable only the prime suspect,
-          reload the problem page, and only if the problem persists, disable
-          more and more actions until you have identified the culprit. You
-          may or may not want to turn the other actions on again. Remember to
-          flush your browser's caches in between any such changes!
-        

-        

-          Alternately, if you are comfortable with a text editor, you can
-          accomplish the same thing by editing the appropriate actions file.
-          Probably the easiest way to deal with such problems when editing by
-          hand is to add your site to a { fragile }
-          section in user.action, which is an alias
-          that turns off most "dangerous" actions,
-          but is also likely to turn off more actions then needed, and thus
-          lower your privacy and protection more than necessary,
-        

-        

-          Troubleshooting actions is discussed in more detail in the User
-          Manual appendix, Troubleshooting: the Anatomy of an Action.
-          There is also an actions tutorial with general configuration information
-          and examples.
-        

-        

-          As a last resort, you can always see if your browser has a setting
-          that will bypass the proxy setting for selective sites. Modern
-          browsers can do this.
-        

-      

-      

-        

-          5.5. After installing Privoxy, I have to log in every
-          time I start IE. What gives?
-        

-        

-          This is a quirk that affects the installation of Privoxy, in conjunction with Internet Explorer
-          and Internet Connection Sharing on Windows 2000 and Windows XP. The
-          symptoms may appear to be corrupted or invalid DUN settings, or
-          passwords.
-        

-        

-          When setting up an NT based Windows system with Privoxy you may find that things do not seem
-          to be doing what you expect. When you set your system up you will
-          probably have set up Internet Connection Sharing (ICS) with Dial up
-          Networking (DUN) when logged in with administrator privileges. You
-          will probably have made this DUN connection available to other
-          accounts that you may have set-up on your system. E.g. Mum or Dad
-          sets up the system and makes accounts suitably configured for the
-          kids.
-        

-        

-          When setting up Privoxy in this
-          environment you will have to alter the proxy set-up of Internet
-          Explorer (IE) for the specific DUN connection on which you wish to
-          use Privoxy. When you do this the
-          ICS DUN set-up becomes user specific. In this instance you will see
-          no difference if you change the DUN connection under the account
-          used to set-up the connection. However when you do this from
-          another user you will notice that the DUN connection changes to
-          make available to "Me only". You will also find that you have to
-          store the password under each different user!
-        

-        

-          The reason for this is that each user's set-up for IE is user
-          specific. Each set-up DUN connection and each LAN connection in IE
-          store the settings for each user individually. As such this
-          enforces individual configurations rather than common ones. Hence
-          the first time you use a DUN connection after re-booting your
-          system it may not perform as you expect, and prompt you for the
-          password. Just set and save the password again and all should be
-          OK.
-        

-        

-          [Thanks to Ray Griffith for this submission.]
-        

-      

-      

-        

-          5.6. I cannot connect to any FTP sites. Privoxy is
-          blocking me.
-        

-        

-          Privoxy cannot act as a proxy for
-          FTP traffic, so do not configure your browser to use Privoxy as an FTP proxy. The same is true for
-          any protocol other than
-          HTTP or HTTPS (SSL).
-        

-        

-          Most browsers understand FTP as well as HTTP. If you connect to a
-          site, with a URL like ftp://ftp.example.com, your browser is making an FTP
-          connection, and not a HTTP connection. So while your browser may
-          speak FTP, Privoxy does not, and
-          cannot proxy such traffic.
-        

-        

-          To complicate matters, some systems may have a generic "proxy" setting, which will enable various
-          protocols, including both HTTP and FTP proxying! So it is possible
-          to accidentally enable FTP proxying in these cases. And of course,
-          if this happens, Privoxy will
-          indeed cause problems since it does not know FTP. Newer version
-          will give a sane error message if a FTP connection is attempted.
-          Just disable the FTP setting and all will be well again.
-        

-        

-          Will Privoxy ever proxy FTP
-          traffic? Unlikely. There just is not much reason, and the work to
-          make this happen is more than it may seem.
-        

-      

-      

-        

-          5.7. In Mac OS X, I can't configure Microsoft
-          Internet Explorer to use Privoxy as the HTTP proxy.
-        

-        

-          Microsoft Internet Explorer (in versions like 5.1) respects
-          system-wide network settings. In order to change the HTTP proxy,
-          open System Preferences, and click on the Network icon. In the
-          settings pane that comes up, click on the Proxies tab. Ensure the
-          "Web Proxy (HTTP)" checkbox is checked and enter 127.0.0.1 in the entry field. Enter 8118 in the Port field. The next time you start IE,
-          it should reflect these values.
-        

-      

-      

-        

-          5.8. In Mac OS X, I dragged the Privoxy
-          folder to the trash in order to uninstall it. Now the finder tells
-          me I don't have sufficient privileges to empty the trash.
-        

-        

-          Note: This ONLY applies to privoxy 3.0.6 and earlier.
-        

-        

-          Just dragging the Privoxy folder
-          to the trash is not enough to delete it. Privoxy supplies an uninstall.command file that takes care of
-          these details. Open the trash, drag the uninstall.command file out of the trash and
-          double-click on it. You will be prompted for confirmation and the
-          administration password.
-        

-        

-          The trash may still appear full after this command; emptying the
-          trash from the desktop should make it appear empty again.
-        

-      

-      

-        

-          5.9. In Mac OS X Panther (10.3), images
-          often fail to load and/or I experience random delays in page
-          loading. I'm using localhost as my
-          browser's proxy setting.
-        

-        

-          We believe this is due to an IPv6-related bug in Mac OS X, but
-          don't fully understand the issue yet. In any case, changing the
-          proxy setting to 127.0.0.1 instead of localhost works around the problem.
-        

-      

-      

-        

-          5.10. I just upgraded to Mac OS X
-          10.9 (Mavericks) and now Privoxy
-          has stopped working.
-        

-        

-          The upgrade process to Mac OS X Mavericks (10.9) from an earlier
-          version of OS X deletes all user accounts that are either not part
-          of OS X itself or are not interactive user accounts (ones you log
-          in with). Since, for the sake of security, Privoxy runs as a non-privileged user that is
-          created by its installer (_privoxy), it can no longer start up once
-          that account gets deleted. The solution is to perform a complete
-          uninstall using the supplied uninstall.command script (either back up your
-          configuration files or select to not have the uninstaller remove
-          them when it prompts you) and then reinstall Privoxy using the installer package and merge
-          in your configuration.
-        

-      

-      

-        

-          5.11. My logs show many "Unable to get my own hostname" lines. Why?
-        

-        

-          Privoxy tries to get the hostname
-          of the system its running on from the IP address of the system
-          interface it is bound to (from the config
-          file listen-address setting). If the system cannot
-          supply this information, Privoxy
-          logs this condition.
-        

-        

-          Typically, this would be considered a minor system configuration
-          error. It is not a fatal error to Privoxy however, but may result in a much
-          slower response from Privoxy on
-          some platforms due to DNS timeouts.
-        

-        

-          This can be caused by a problem with the local hosts file. If this file has been changed from the
-          original, try reverting it to see if that helps. Make sure whatever
-          name(s) are used for the local system, that they resolve both ways.
-        

-        

-          You should also be able to work around the problem with the hostname
-          option.
-        

-      

-      

-        

-          5.12. When I try to launch Privoxy, I get an error
-          message "port 8118 is already in use"
-          (or similar wording). Why?
-        

-        

-          Port 8118 is Privoxy's default TCP
-          "listening" port. Typically this message
-          would mean that there is already one instance of Privoxy running, and your system is actually
-          trying to start a second Privoxy
-          on the same port, which will not work. (You can have multiple
-          instances but they must be assigned different ports.) How and why
-          this might happen varies from platform to platform, but you need to
-          check your installation and start-up procedures.
-        

-      

-      

-        

-          5.13. Pages with UTF-8 fonts are garbled.
-        

-        

-          This may be the result of an overly aggressive filter. The filters
-          that are enabled in the default configuration aren't expected to
-          cause problems like this. If you enabled the "demoronizer" filter, please try temporarily
-          disabling it.
-        

-        

-          If that doesn't help, temporarily disable all filters to see if
-          another filter could be the culprit. If the problem disappears,
-          enable the filters one by one, until the problem reappears and the
-          offending filter is found.
-        

-        

-          Once the problem-causing filter is known, it can be fixed or
-          disabled.
-        

-        

-          Upgrading Privoxy, or going to the
-          most recent default.action file available
-          from SourceForge might be worth a try, too.
-        

-      

-      

-        

-          5.14. Why are binary files (such as images)
-          corrupted when Privoxy is used?
-        

-        

-          This may also be caused by an (overly aggressive filter in
-          conjunction with a web server that is misreporting the content
-          type. By default binary files are exempted from Privoxy's filtering (unless the web server by
-          mistake says the file is something else).
-        

-      

-      

-        

-          5.15. What is the "demoronizer" and why is it there?
-        

-        

-          The original demoronizer was a Perl script that cleaned up HTML
-          pages which were created with certain Microsoft products. MS has
-          used proprietary extensions to standardized font encodings (ISO
-          8859-1), which has caused problems for pages that are viewed with
-          non-Microsoft products (and are expecting to see a standard set of
-          fonts). The demoronizer corrected these errors so the pages
-          displayed correctly. Privoxy
-          borrowed from this script, introducing a filter based on the
-          original demoronizer, which in turn could correct these errors on
-          the fly.
-        

-        

-          But this is only needed in some situations, and will cause serious
-          problems in some other situations.
-        

-        

-          If you are using Microsoft products, you do not need it. If you
-          need to view pages with UTF-8 characters (such as Cyrillic or
-          Chinese), then it will cause corruption of the fonts, and thus
-          should not be
-          on.
-        

-        

-          On the other hand, if you use non-Microsoft products, and you
-          occasionally notice weird characters on pages, you might want to
-          try it.
-        

-      

-      

-        

-          5.16. Why do I keep seeing "PrivoxyWindowOpen()" in raw source code?
-        

-        

-          Privoxy is attempting to disable
-          malicious Javascript in this case, with the unsolicited-popups filter. Privoxy cannot tell very well "good" code snippets from "bad" code snippets.
-        

-        

-          If you see this in HTML source, and the page displays without
-          problems, then this is good, and likely some pop-up window was
-          disabled. If you see this where it is causing a problem, such as a
-          downloaded program source code file, then you should set an
-          exception for this site or page such that the integrity of the page
-          stays in tact by disabling all filtering.
-        

-      

-      

-        

-          5.17. I am getting too many DNS errors like
-          "404 No Such Domain". Why can't Privoxy
-          do this better?
-        

-        

-          There are potentially several factors here. First of all, the DNS
-          resolution is done by the underlying operating system -- not Privoxy itself. Privoxy merely initiates the process and hands
-          it off, and then later reports whatever the outcome was and tries
-          to give a coherent message if there seems to be a problem. In some
-          cases, this might otherwise be mitigated by the browser itself
-          which might try some work-arounds and alternate approaches (e.g
-          adding "www." to the URL).
-        

-        

-          In other cases, if Privoxy is
-          being chained with another proxy, this could complicate the issue,
-          and cause undue delays and timeouts. In the case of a "socks4a" proxy, the socks server handles all the
-          DNS. Privoxy would just be the
-          "messenger" which is reporting whatever
-          problem occurred downstream, and not the root cause of the error.
-        

-        

-          In any case, versions newer than 3.0.3 include various improvements
-          to help Privoxy better handle
-          these cases.
-        

-      

-      

-        

-          5.18. At one site Privoxy just hangs, and starts
-          taking all CPU. Why is this?
-        

-        

-          This is probably a manifestation of the "100%
-          cpu" problem that occurs on pages containing many (thousands
-          upon thousands) of blank lines. The blank lines are in the raw HTML
-          source of the page, and the browser just ignores them. But the
-          pattern matching in Privoxy's page
-          filtering mechanism is trying to match against absurdly long
-          strings and this becomes very CPU-intensive, taking a long, long
-          time to complete.
-        

-        

-          Until a better solution comes along, disable filtering on these
-          pages, particularly the js-annoyances and
-          unsolicited-popups filters. If you run
-          into this problem with a recent Privoxy version, please send a problem report.
-        

-      

-      

-        

-          5.19. I just installed Privoxy, and all my
-          browsing has slowed to a crawl. What gives?
-        

-        

-          This should not happen, and for the overwhelming number of users
-          world-wide, it does not happen. I would suspect some inadvertent
-          interaction of software components such as anti-virus software,
-          spyware protectors, personal firewalls or similar components. Try
-          disabling (or uninstalling) these one at a time and see if that
-          helps. Either way, if you are using a recent Privoxy version, please report the problem.
-        

-      

-      

-        

-          5.20. Why do my filters work on some sites
-          but not on others?
-        

-        

-          It's probably due to compression. It is a common practice for web
-          servers to send their content "compressed" in order to speed things up, and then
-          let the browser "uncompress" them. When
-          compiled with zlib support Privoxy
-          can decompress content before filtering, otherwise you may want to
-          enable prevent-compression.
-        

-        

-          As of Privoxy 3.0.9, zlib support
-          is enabled in the default builds.
-        

-      

-      

-        

-          5.21. On some HTTPS sites my browser warns
-          me about unauthenticated content, the URL bar doesn't get
-          highlighted and the lock symbol appears to be broken. What's going
-          on?
-        

-        

-          Probably the browser is requesting ads through HTTPS and Privoxy is blocking the requests.
-          Privoxy's error messages are delivered unencrypted and while it's
-          obvious for the browser that the HTTPS request is already blocked
-          by the proxy, some warn about unauthenticated content anyway.
-        

-        

-          To work around the problem you can redirect those requests to an
-          invalid local address instead of blocking them. While the redirects
-          aren't encrypted either, many browsers don't care. They simply
-          follow the redirect, fail to reach a server and display an error
-          message instead of the ad.
-        

-        

-          To do that, enable logging to figure out which requests get blocked
-          by Privoxy and add the hosts (no
-          path patterns) to a section like this:
-        

-        
-          
-            
-          
-        

-
-{+redirect{http://127.0.0.1:0/} -block -limit-connect}
-.ivwbox.de:443/
-

-            

-
-        

-          Additionally you have to configure your browser to contact "127.0.0.1:0" directly (instead of through
-          Privoxy).
-        

-        

-          To add a proxy exception in Mozilla
-          Firefox open the "Preferences",
-          click the "Settings" button located on
-          the "Network" tab in the "Advanced" section, and add "127.0.0.1:0" in the "No Proxy
-          for:" field.
-        

-      

-      

-        

-          5.22. I get selinux error messages. How can I
-          fix this?
-        

-        

-          Please report the problem to the creator of your selinux policies.
-        

-        

-          The problem is that some selinux policy writers aren't familiar
-          with the application they are trying to "secure" and thus create policies that make no
-          sense.
-        

-        

-          In Privoxy's case the problem
-          usually is that the policy only allows outgoing connections for
-          certain destination ports (e.g. 80 and 443). While this may cover
-          the standard ports, websites occasionally use other ports as well.
-          This isn't a security problem and therefore Privoxy's default configuration doesn't block
-          these requests.
-        

-        

-          If you really want to block these ports (and don't be able to load
-          websites that don't use standard ports), you should configure
-          Privoxy to block these ports as well, so it doesn't trigger the
-          selinux warnings.
-        

-      

-      

-        

-          5.23. I compiled Privoxy with Gentoo's portage and it appears
-          to be very slow. Why?
-        

-        

-          Probably you unintentionally compiled Privoxy without threading support in which
-          case requests have to be serialized and only one can be served at
-          the same time.
-        

-        

-          Check your "USE" flags and make sure
-          they include "threads". If they don't,
-          add the flag and rebuild Privoxy.
-        

-        

-          If you compiled Privoxy with
-          threading support (on POSIX-based systems), the "Conditional #defines" section on http://config.privoxy.org/show-status will list "FEATURE_PTHREAD" as "enabled".
-        

-      

-      

-        

-          5.24. What are tainted sockets and how do
-          I prevent them?
-        

-        

-          Privoxy marks sockets as tainted
-          when it can't use them to serve additional requests. This does not
-          necessarily mean that something went wrong and information about
-          tainted sockets is only logged if connection debugging is enabled
-          (debug 2).
-        

-        

-          For example server sockets that were used for CONNECT requests
-          (which are used to tunnel https:// requests) are considered tainted
-          once the client closed its connection to Privoxy. Technically Privoxy could keep the connection to the
-          server open, but the server would not accept requests that do not
-          belong to the previous TLS/SSL session (and the client may even
-          have terminated the session).
-        

-        

-          Server sockets are also marked tainted when a client requests a
-          resource, but closes the connection before Privoxy has completely received (and
-          forwarded) the resource to the client. In this case the server
-          would (probably) accept additional requests, but Privoxy could not get the response without
-          completely reading the leftovers from the previous response.
-        

-        

-          These are just two examples, there are currently a bit more than 25
-          scenarios in which a socket is considered tainted.
-        

-        

-          While sockets can also be marked tainted as a result of a technical
-          problem that may be worth fixing, the problem will be explicitly
-          logged as error.
-        

-      

-      

-        

-          5.25. After adding my custom filters,
-          Privoxy crashes when visitting
-          certain websites
-        

-        

-          This can happen if your custom filters require more memory than
-          Privoxy is allowed to use. Usually
-          the problem is that the operating system enforces a stack size
-          limit that isn't sufficient.
-        

-        

-          Unless the problem occurs with the filters available in the default
-          configuration, this is not considered a Privoxy bug.
-        

-        

-          To prevent the crashes you can rewrite your filter to use less
-          ressources, increase the relevant memory limit or recompile pcre to
-          use less stack space. For details please see the pcrestack man page and the documentation of your
-          operating system.
-        

-      

-    
-    

-      

-      
-        
-          
-          
-          
+      

-            Prev
-          
-            Home
-          
-            Next
           
         

+
+      
Despite 12 out of 32 requests being blocked, the page looked, and
+      seemed to behave perfectly "normal" (minus
+      some ads, of course).

+    

+
+    

+      
5.4. One of my
+      favorite sites does not work with Privoxy. What can I do?

+
+      
First verify that it is indeed a Privoxy problem, by toggling off Privoxy through http://config.privoxy.org/toggle (the toggle feature may
+      need to be enabled in the main config), and
+      then shift-reloading the problem page (i.e. holding down the shift key
+      while clicking reload. Alternatively, flush your browser's disk and
+      memory caches).

+
+      
If the problem went away, we know we have a configuration related
+      problem. Now go to http://config.privoxy.org/show-url-info and paste the
+      full URL of the page in question into the prompt. See which actions are
+      being applied to the URL, and which matches in which actions files are
+      responsible for that. It might be helpful also to look at your logs for
+      this site too, to see what else might be happening (note: logging may
+      need to be enabled in the main config file). Many sites are complex and
+      require a number of related pages to help present their content. Look
+      at what else might be used by the page in question, and what of that
+      might be required. Now, armed with this information, go to
+      http://config.privoxy.org/show-status and select the
+      appropriate actions files for editing.

+
+      
You can now either look for a section which disables the actions
+      that you suspect to cause the problem and add a pattern for your site
+      there, or make up a completely new section for your site. In any case,
+      the recommended way is to disable only the prime suspect, reload the
+      problem page, and only if the problem persists, disable more and more
+      actions until you have identified the culprit. You may or may not want
+      to turn the other actions on again. Remember to flush your browser's
+      caches in between any such changes!

+
+      
Alternately, if you are comfortable with a text editor, you can
+      accomplish the same thing by editing the appropriate actions file.
+      Probably the easiest way to deal with such problems when editing by
+      hand is to add your site to a { fragile }
+      section in user.action, which is an alias
+      that turns off most "dangerous" actions, but
+      is also likely to turn off more actions then needed, and thus lower
+      your privacy and protection more than necessary,

+
+      
Troubleshooting actions is discussed in more detail in the User Manual
+      appendix, Troubleshooting: the Anatomy of an Action. There is also
+      an actions tutorial with general configuration information and
+      examples.

+
+      
As a last resort, you can always see if your browser has a setting
+      that will bypass the proxy setting for selective sites. Modern browsers
+      can do this.

+    

+
+    

+      
5.5. After installing Privoxy,
+      I have to log in every time I start IE. What gives?

+
+      
This is a quirk that affects the installation of Privoxy, in conjunction with Internet Explorer and
+      Internet Connection Sharing on Windows 2000 and Windows XP. The
+      symptoms may appear to be corrupted or invalid DUN settings, or
+      passwords.

+
+      
When setting up an NT based Windows system with Privoxy you may find that things do not seem to be
+      doing what you expect. When you set your system up you will probably
+      have set up Internet Connection Sharing (ICS) with Dial up Networking
+      (DUN) when logged in with administrator privileges. You will probably
+      have made this DUN connection available to other accounts that you may
+      have set-up on your system. E.g. Mum or Dad sets up the system and
+      makes accounts suitably configured for the kids.

+
+      
When setting up Privoxy in this
+      environment you will have to alter the proxy set-up of Internet
+      Explorer (IE) for the specific DUN connection on which you wish to use
+      Privoxy. When you do this the ICS DUN
+      set-up becomes user specific. In this instance you will see no
+      difference if you change the DUN connection under the account used to
+      set-up the connection. However when you do this from another user you
+      will notice that the DUN connection changes to make available to "Me
+      only". You will also find that you have to store the password under
+      each different user!

+
+      
The reason for this is that each user's set-up for IE is user
+      specific. Each set-up DUN connection and each LAN connection in IE
+      store the settings for each user individually. As such this enforces
+      individual configurations rather than common ones. Hence the first time
+      you use a DUN connection after re-booting your system it may not
+      perform as you expect, and prompt you for the password. Just set and
+      save the password again and all should be OK.

+
+      
[Thanks to Ray Griffith for this submission.]

+    

+
+    

+      
5.6. I cannot connect to any
+      FTP sites. Privoxy is blocking me.

+
+      
Privoxy cannot act as a proxy for
+      FTP traffic, so do not configure your browser to use Privoxy as an FTP proxy. The same is true for
+      any protocol other than HTTP
+      or HTTPS (SSL).

+
+      
Most browsers understand FTP as well as HTTP. If you connect to a
+      site, with a URL like ftp://ftp.example.com,
+      your browser is making an FTP connection, and not a HTTP connection. So
+      while your browser may speak FTP, Privoxy does not, and cannot proxy such
+      traffic.

+
+      
To complicate matters, some systems may have a generic "proxy" setting, which will enable various protocols,
+      including both
+      HTTP and FTP proxying! So it is possible to accidentally enable FTP
+      proxying in these cases. And of course, if this happens, Privoxy will indeed cause problems since it does
+      not know FTP. Newer version will give a sane error message if a FTP
+      connection is attempted. Just disable the FTP setting and all will be
+      well again.

+
+      
Will Privoxy ever proxy FTP
+      traffic? Unlikely. There just is not much reason, and the work to make
+      this happen is more than it may seem.

+    

+
+    

+      
5.7. In Mac OS X, I
+      can't configure Microsoft Internet Explorer to use Privoxy as the HTTP
+      proxy.

+
+      
Microsoft Internet Explorer (in versions like 5.1) respects
+      system-wide network settings. In order to change the HTTP proxy, open
+      System Preferences, and click on the Network icon. In the settings pane
+      that comes up, click on the Proxies tab. Ensure the "Web Proxy (HTTP)"
+      checkbox is checked and enter 127.0.0.1 in the
+      entry field. Enter 8118 in the Port field. The
+      next time you start IE, it should reflect these values.

+    

+
+    

+      
5.8.
+      In Mac OS X, I dragged the Privoxy folder to the trash in order to
+      uninstall it. Now the finder tells me I don't have sufficient
+      privileges to empty the trash.

+
+      
Note: This ONLY applies to privoxy 3.0.6 and earlier.

+
+      
Just dragging the Privoxy folder to
+      the trash is not enough to delete it. Privoxy supplies an uninstall.command file that takes care of these
+      details. Open the trash, drag the uninstall.command file out of the trash and
+      double-click on it. You will be prompted for confirmation and the
+      administration password.

+
+      
The trash may still appear full after this command; emptying the
+      trash from the desktop should make it appear empty again.

+    

+
+    

+      
5.9. In Mac
+      OS X Panther (10.3), images often fail to load and/or I experience
+      random delays in page loading. I'm using localhost as my browser's proxy setting.

+
+      
We believe this is due to an IPv6-related bug in Mac OS X, but don't
+      fully understand the issue yet. In any case, changing the proxy setting
+      to 127.0.0.1 instead of localhost works around the problem.

+    

+
+    

+      
5.10. I just upgraded to Mac OS X 10.9
+      (Mavericks) and now Privoxy has
+      stopped working.

+
+      
The upgrade process to Mac OS X Mavericks (10.9) from an earlier
+      version of OS X deletes all user accounts that are either not part of
+      OS X itself or are not interactive user accounts (ones you log in
+      with). Since, for the sake of security, Privoxy runs as a non-privileged user that is
+      created by its installer (_privoxy), it can no longer start up once
+      that account gets deleted. The solution is to perform a complete
+      uninstall using the supplied uninstall.command script (either back up your
+      configuration files or select to not have the uninstaller remove them
+      when it prompts you) and then reinstall Privoxy using the installer package and merge in
+      your configuration.

+    

+
+    

+      
5.11. My logs
+      show many "Unable to get my own hostname"
+      lines. Why?

+
+      
Privoxy tries to get the hostname
+      of the system its running on from the IP address of the system
+      interface it is bound to (from the config
+      file listen-address setting). If the system cannot
+      supply this information, Privoxy logs
+      this condition.

+
+      
Typically, this would be considered a minor system configuration
+      error. It is not a fatal error to Privoxy however, but may result in a much slower
+      response from Privoxy on some
+      platforms due to DNS timeouts.

+
+      
This can be caused by a problem with the local hosts file. If this file has been changed from the
+      original, try reverting it to see if that helps. Make sure whatever
+      name(s) are used for the local system, that they resolve both ways.

+
+      
You should also be able to work around the problem with the hostname
+      option.

+    

+
+    

+      
5.12. When I try to launch
+      Privoxy, I get an error message "port 8118 is
+      already in use" (or similar wording). Why?

+
+      
Port 8118 is Privoxy's default TCP
+      "listening" port. Typically this message
+      would mean that there is already one instance of Privoxy running, and your system is actually
+      trying to start a second Privoxy on
+      the same port, which will not work. (You can have multiple instances
+      but they must be assigned different ports.) How and why this might
+      happen varies from platform to platform, but you need to check your
+      installation and start-up procedures.

+    

+
+    

+      
5.13. Pages
+      with UTF-8 fonts are garbled.

+
+      
This may be the result of an overly aggressive filter. The filters
+      that are enabled in the default configuration aren't expected to cause
+      problems like this. If you enabled the "demoronizer" filter, please try temporarily disabling
+      it.

+
+      
If that doesn't help, temporarily disable all filters to see if
+      another filter could be the culprit. If the problem disappears, enable
+      the filters one by one, until the problem reappears and the offending
+      filter is found.

+
+      
Once the problem-causing filter is known, it can be fixed or
+      disabled.

+
+      
Upgrading Privoxy, or going to the
+      most recent default.action file available
+      from SourceForge might be worth a try, too.

+    

+
+    

+      
5.14. Why
+      are binary files (such as images) corrupted when Privoxy is
+      used?

+
+      
This may also be caused by an (overly aggressive filter in conjunction
+      with a web server that is misreporting the content type. By default
+      binary files are exempted from Privoxy's filtering (unless the web server by
+      mistake says the file is something else).

+    

+
+    

+      
5.15. What
+      is the "demoronizer" and why is it
+      there?

+
+      
The original demoronizer was a Perl script that cleaned up HTML
+      pages which were created with certain Microsoft products. MS has used
+      proprietary extensions to standardized font encodings (ISO 8859-1),
+      which has caused problems for pages that are viewed with non-Microsoft
+      products (and are expecting to see a standard set of fonts). The
+      demoronizer corrected these errors so the pages displayed correctly.
+      Privoxy borrowed from this script,
+      introducing a filter based on the original demoronizer, which in turn
+      could correct these errors on the fly.

+
+      
But this is only needed in some situations, and will cause serious
+      problems in some other situations.

+
+      
If you are using Microsoft products, you do not need it. If you need
+      to view pages with UTF-8 characters (such as Cyrillic or Chinese), then
+      it will cause corruption of the fonts, and thus should not be on.

+
+      
On the other hand, if you use non-Microsoft products, and you
+      occasionally notice weird characters on pages, you might want to try
+      it.

+    

+
+    

+      
5.16. Why do I
+      keep seeing "PrivoxyWindowOpen()" in raw
+      source code?

+
+      
Privoxy is attempting to disable
+      malicious Javascript in this case, with the unsolicited-popups filter. Privoxy cannot tell very well "good" code snippets from "bad" code snippets.

+
+      
If you see this in HTML source, and the page displays without
+      problems, then this is good, and likely some pop-up window was
+      disabled. If you see this where it is causing a problem, such as a
+      downloaded program source code file, then you should set an exception
+      for this site or page such that the integrity of the page stays in tact
+      by disabling all filtering.

+    

+
+    

+      
5.17. I am getting
+      too many DNS errors like "404 No Such
+      Domain". Why can't Privoxy do this better?

+
+      
There are potentially several factors here. First of all, the DNS
+      resolution is done by the underlying operating system -- not
+      Privoxy itself. Privoxy merely initiates the process and hands it
+      off, and then later reports whatever the outcome was and tries to give
+      a coherent message if there seems to be a problem. In some cases, this
+      might otherwise be mitigated by the browser itself which might try some
+      work-arounds and alternate approaches (e.g adding "www." to the URL).

+
+      
In other cases, if Privoxy is being
+      chained with another proxy, this could complicate the issue, and cause
+      undue delays and timeouts. In the case of a "socks4a" proxy, the socks server handles all the DNS.
+      Privoxy would just be the "messenger" which is reporting whatever problem occurred
+      downstream, and not the root cause of the error.

+
+      
In any case, versions newer than 3.0.3 include various improvements
+      to help Privoxy better handle these
+      cases.

+    

+
+    

+      
5.18. At one site
+      Privoxy just hangs, and starts taking all CPU. Why is this?

+
+      
This is probably a manifestation of the "100%
+      cpu" problem that occurs on pages containing many (thousands
+      upon thousands) of blank lines. The blank lines are in the raw HTML
+      source of the page, and the browser just ignores them. But the pattern
+      matching in Privoxy's page filtering
+      mechanism is trying to match against absurdly long strings and this
+      becomes very CPU-intensive, taking a long, long time to complete.

+
+      
Until a better solution comes along, disable filtering on these
+      pages, particularly the js-annoyances and
+      unsolicited-popups filters. If you run into
+      this problem with a recent Privoxy
+      version, please send a problem report.

+    

+
+    

+      
5.19. I just
+      installed Privoxy, and all my browsing has slowed to a crawl. What
+      gives?

+
+      
This should not happen, and for the overwhelming number of users
+      world-wide, it does not happen. I would suspect some inadvertent
+      interaction of software components such as anti-virus software, spyware
+      protectors, personal firewalls or similar components. Try disabling (or
+      uninstalling) these one at a time and see if that helps. Either way, if
+      you are using a recent Privoxy
+      version, please report the problem.

+    

+
+    

+      
5.20. Why do
+      my filters work on some sites but not on others?

+
+      
It's probably due to compression. It is a common practice for web
+      servers to send their content "compressed"
+      in order to speed things up, and then let the browser "uncompress" them. When compiled with zlib support
+      Privoxy can decompress content before
+      filtering, otherwise you may want to enable prevent-compression.

+
+      
As of Privoxy 3.0.9, zlib support
+      is enabled in the default builds.

+    

+
+    

+      
5.21. On
+      some HTTPS sites my browser warns me about unauthenticated content, the
+      URL bar doesn't get highlighted and the lock symbol appears to be
+      broken. What's going on?

+
+      
Probably the browser is requesting ads through HTTPS and
+      Privoxy is blocking the requests.
+      Privoxy's error messages are delivered unencrypted and while it's
+      obvious for the browser that the HTTPS request is already blocked by
+      the proxy, some warn about unauthenticated content anyway.

+
+      
To work around the problem you can redirect those requests to an
+      invalid local address instead of blocking them. While the redirects
+      aren't encrypted either, many browsers don't care. They simply follow
+      the redirect, fail to reach a server and display an error message
+      instead of the ad.

+
+      
To do that, enable logging to figure out which requests get blocked
+      by Privoxy and add the hosts (no path
+      patterns) to a section like this:

+
+      
-          
-          
-          

         

-            Miscellaneous
-          
-             
-          
-            Contacting the developers, Bug Reporting and Feature Requests
+          
+            
+{+redirect{http://127.0.0.1:0/} -block -limit-connect}
+.ivwbox.de:443/
+

           		
         

       

+
+      
Additionally you have to configure your browser to contact
+      "127.0.0.1:0" directly (instead of through
+      Privoxy).

+
+      
To add a proxy exception in Mozilla
+      Firefox open the "Preferences", click
+      the "Settings" button located on the
+      "Network" tab in the "Advanced" section, and add "127.0.0.1:0" in the "No Proxy
+      for:" field.

     

-  
-
 
+    

+      
5.22. I get selinux
+      error messages. How can I fix this?

+
+      
Please report the problem to the creator of your selinux
+      policies.

+
+      
The problem is that some selinux policy writers aren't familiar with
+      the application they are trying to "secure"
+      and thus create policies that make no sense.

+
+      
In Privoxy's case the problem
+      usually is that the policy only allows outgoing connections for certain
+      destination ports (e.g. 80 and 443). While this may cover the standard
+      ports, websites occasionally use other ports as well. This isn't a
+      security problem and therefore Privoxy's default configuration doesn't block
+      these requests.

+
+      
If you really want to block these ports (and don't be able to load
+      websites that don't use standard ports), you should configure Privoxy
+      to block these ports as well, so it doesn't trigger the selinux
+      warnings.

+    

+
+    

+      
5.23. I
+      compiled Privoxy with Gentoo's portage
+      and it appears to be very slow. Why?

+
+      
Probably you unintentionally compiled Privoxy without threading support in which case
+      requests have to be serialized and only one can be served at the same
+      time.

+
+      
Check your "USE" flags and make sure they
+      include "threads". If they don't, add the
+      flag and rebuild Privoxy.

+
+      
If you compiled Privoxy with
+      threading support (on POSIX-based systems), the "Conditional #defines" section on http://config.privoxy.org/show-status will list "FEATURE_PTHREAD" as "enabled".

+    

+
+    

+      
5.24.
+      What are tainted sockets and how do I prevent them?

+
+      
Privoxy marks sockets as tainted
+      when it can't use them to serve additional requests. This does not
+      necessarily mean that something went wrong and information about
+      tainted sockets is only logged if connection debugging is enabled
+      (debug 2).

+
+      
For example server sockets that were used for CONNECT requests
+      (which are used to tunnel https:// requests) are considered tainted
+      once the client closed its connection to Privoxy. Technically Privoxy could keep the connection to the server
+      open, but the server would not accept requests that do not belong to
+      the previous TLS/SSL session (and the client may even have terminated
+      the session).

+
+      
Server sockets are also marked tainted when a client requests a
+      resource, but closes the connection before Privoxy has completely received (and forwarded)
+      the resource to the client. In this case the server would (probably)
+      accept additional requests, but Privoxy could not get the response without
+      completely reading the leftovers from the previous response.

+
+      
These are just two examples, there are currently a bit more than 25
+      scenarios in which a socket is considered tainted.

+
+      
While sockets can also be marked tainted as a result of a technical
+      problem that may be worth fixing, the problem will be explicitly logged
+      as error.

+    

+
+    

+      
5.25. After adding my custom filters, Privoxy crashes when visitting certain
+      websites

+
+      
This can happen if your custom filters require more memory than
+      Privoxy is allowed to use. Usually the
+      problem is that the operating system enforces a stack size limit that
+      isn't sufficient.

+
+      
Unless the problem occurs with the filters available in the default
+      configuration, this is not considered a Privoxy bug.

+
+      
To prevent the crashes you can rewrite your filter to use less
+      ressources, increase the relevant memory limit or recompile pcre to use
+      less stack space. For details please see the pcrestack man page and the documentation of your operating
+      system.

+    

+  
+
+  

+    

+
+    
+      
+        
+
+        
+
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
PrevHomeNext
Miscellaneous Contacting the developers,
+        Bug Reporting and Feature Requests

+  

+
+
diff --git a/doc/webserver/index.html b/doc/webserver/index.html
index 70c40a40..75d89896 100644
--- a/doc/webserver/index.html
+++ b/doc/webserver/index.html
@@ -1,187 +1,152 @@
-
+
+
 
-  
-    
-      Privoxy - Home Page
-    
-    
-    
-    
-    
-  
-  
-    

-      

-        

-          Privoxy - Home Page
-        

-        

-          

-            
-            

-              Privoxy is a non-caching web proxy with advanced filtering
-              capabilities for enhancing privacy, modifying web page data and
-              HTTP headers, controlling access, and removing ads and other
-              obnoxious Internet junk. Privoxy has a flexible configuration
-              and can be customized to suit individual needs and tastes. It
-              has application for both stand-alone systems and multi-user
-              networks.
-            

-            

-              Privoxy is Free Software and licensed under the GNU GPLv2.
-            

-            

-              Privoxy is an associated project of Software in the Public
-              Interest (SPI).
-            

-            

-              Helping hands and donations are welcome:
-            

-            
-
-            

-              The most recent release is 3.0.26 (UNRELEASED).
-            

-          

+
+  Privoxy - Home Page
+  
+  
+  
+  
+
+
+
+  

+    

+      
Privoxy - Home Page

+
+      

+        

+          
+
+          
Privoxy is a non-caching web proxy with advanced filtering
+          capabilities for enhancing privacy, modifying web page data and
+          HTTP headers, controlling access, and removing ads and other
+          obnoxious Internet junk. Privoxy has a flexible configuration and
+          can be customized to suit individual needs and tastes. It has
+          application for both stand-alone systems and multi-user
+          networks.

+
+          
Privoxy is Free Software and licensed under the GNU GPLv2.

+
+          
Privoxy is an associated project of Software in the Public
+          Interest (SPI).

+
+          
Helping hands and donations are welcome:

+
+          
+
+          
The most recent release is 3.0.26 (stable).

         

-        

-      

-      

-        

-          Download
-        

-        

-          You can download
-          Privoxy here, from this
-          mirror, or from SourceForge.
-        

-      

-      

-        

-        

-          Documentation
-        

-        

-        

-        
-      

-      

-        

-        

-          More information
-        

-        

-        

-        
-      

-      

-        

-        

-          
-        

-        

-        

-        

-          The Privoxy website is also available as Tor onion
-          service.
-        

-
-        

-        

-        

-          Copyright © 2001-2016 by Privoxy Developers
-        

-
-        

-        

-        

-          Hosting sponsored by

-           ChameleonJohn Coupons
-           .
-        

       

+      

     

-  
-
 
+    

+      
Download

+
+      
You can download
+      Privoxy here, from this mirror, or from SourceForge.

+    

+
+    

+      

+
+      
Documentation

+
+      
+    

+
+    

+      

+
+      
More
+      information

+
+      
+    

+
+    

+      

+
+      

+
+      
The Privoxy website is also
+      available as Tor
+      onion service.

+
+      
Copyright © 2001-2016 by
+      Privoxy Developers

+
+      
Hosting sponsored by

+      +.

+    

+  

+
+
diff --git a/doc/webserver/man-page/privoxy-man-page.html b/doc/webserver/man-page/privoxy-man-page.html
index 6c2b09c8..ce2c927a 100644
--- a/doc/webserver/man-page/privoxy-man-page.html
+++ b/doc/webserver/man-page/privoxy-man-page.html
@@ -1,23 +1,20 @@
-
+
+
 
-  
-    
-      Privoxy Man page
-    
-    
-  
-  
-    

-      NAME
-    

-
+
+  Privoxy Man page
+  
+
+
+
+  
NAME

+  
 
 
 

-    

-      SYNOPSIS
-    

-
+
+  
SYNOPSIS

+  
        privoxy [--chroot ] [--config-test ] [--help ] [--no-daemon ]
        [--pidfile pidfile ] [--pre-chroot-nslookup hostname ] [--user
        user[.group] ] [--version ] [configfile ]
@@ -25,10 +22,9 @@
 
 
 

-    

-      OPTIONS
-    

-
+
+  
OPTIONS

+  
        Privoxy may be invoked with the following command line options:
 
        --chroot
@@ -91,10 +87,9 @@
 
 
 

-    

-      INSTALLATION AND USAGE
-    

-
+
+  
INSTALLATION AND USAGE

+  
        Browsers can either be individually configured to use Privoxy as a HTTP
        proxy (recommended), or Privoxy can be combined with a packet filter to
        build an intercepting proxy (see config).  The default setting is  for
@@ -115,10 +110,9 @@
 
 
 

-    

-      CONFIGURATION
-    

-
+
+  
CONFIGURATION

+  
        Privoxy can be configured with the various configuration files. The
        default configuration files are: config, default.filter, default.action
        and default.action. user.action should be used for locally defined
@@ -148,10 +142,9 @@
 
 
 

-    

-      SIGNALS
-    

-
+
+  
SIGNALS

+  
        Privoxy terminates on the SIGINT and SIGTERM signals. Log rotation
        scripts may cause a re-opening of the logfile by sending a SIGHUP to
        Privoxy. Note that unlike other daemons,  Privoxy does not need to be
@@ -162,10 +155,9 @@
 
 
 

-    

-      NOTES
-    

-
+
+  
NOTES

+  
        This is a beta version of Privoxy. Not all features are well tested.
 
        Please see the User Manual on how to contact the developers, for
@@ -173,10 +165,9 @@
 
 
 

-    

-      SEE ALSO
-    

-
+
+  
SEE ALSO

+  
        Other references and sites of interest to Privoxy users:
 
        https://www.privoxy.org/, the Privoxy Home page.
@@ -198,10 +189,9 @@
 
 
 

-    

-      DEVELOPMENT TEAM
-    

-
+
+  
DEVELOPMENT TEAM

+  
         Fabian Keil, lead developer
         David Schmidt
         Hal Burgiss
@@ -217,6 +207,5 @@
 
 Privoxy 3.0.25 beta              26 July 2016                       PRIVOXY(1)
 

-  
+
 
-
diff --git a/doc/webserver/privoxy-index.html b/doc/webserver/privoxy-index.html
index 696c7fd9..00b4a9b5 100644
--- a/doc/webserver/privoxy-index.html
+++ b/doc/webserver/privoxy-index.html
@@ -1,166 +1,142 @@
-
+
+
 
-  
-    
-      Privoxy - The Privacy Enhancing Proxy
-    
-    
-    
-    
-    
-  
-  
-    

-      

-        

-          Privoxy - The Privacy Enhancing Proxy
-        

-        

-          Project Index Page v3.0.26
-        

-        

-          

-            
-            

-              Privoxy is a non-caching web proxy with advanced filtering
-              capabilities for enhancing privacy, modifying web page data and
-              HTTP headers, controlling access, and removing ads and other
-              obnoxious Internet junk. Privoxy has a flexible configuration
-              and can be customized to suit individual needs and tastes. It
-              has application for both stand-alone systems and multi-user
-              networks.
-            

-            

-              Privoxy is Free Software and licensed under the GNU GPLv2.
-            

-            

-              Privoxy is an associated project of Software in the Public
-              Interest (SPI).
-            

-            

-              Helping hands and donations are welcome:
-            

-            
-          

+
+  Privoxy - The Privacy Enhancing Proxy
+  
+  
+  
+  
+
+
+
+  

+    

+      
Privoxy - The Privacy
+      Enhancing Proxy

+
+      
Project Index Page v3.0.26

+
+      

+        

+          
+
+          
Privoxy is a non-caching web proxy with advanced filtering
+          capabilities for enhancing privacy, modifying web page data and
+          HTTP headers, controlling access, and removing ads and other
+          obnoxious Internet junk. Privoxy has a flexible configuration and
+          can be customized to suit individual needs and tastes. It has
+          application for both stand-alone systems and multi-user
+          networks.

+
+          
Privoxy is Free Software and licensed under the GNU GPLv2.

+
+          
Privoxy is an associated project of Software in the Public
+          Interest (SPI).

+
+          
Helping hands and donations are welcome:

+
+          
         

-        

-      

-      

-        

-          Download
-        

-        

-          You can download
-          Privoxy here, from this
-          mirror, or from SourceForge.
-        

-      

-      

-        

-        

-          Documentation
-        

-        

-        

-        
-      

-      

-        

-        

-          More information
-        

-        

-        

-        
-      

-      

-        

-        

-          
-        

-        

-          Copyright © 2001-2016 by Privoxy Developers
-        

       

+      

     

-  
-
 
+    

+      
Download

+
+      
You can download
+      Privoxy here, from this mirror, or from SourceForge.

+    

+
+    

+      

+
+      
Documentation

+
+      
+    

+
+    

+      

+
+      
More
+      information

+
+      
+    

+
+    

+      

+
+      

+
+      
Copyright © 2001-2016 by Privoxy Developers

+    

+  

+
+
diff --git a/doc/webserver/sponsors/index.html b/doc/webserver/sponsors/index.html
index eb6cea07..93538db2 100644
--- a/doc/webserver/sponsors/index.html
+++ b/doc/webserver/sponsors/index.html
@@ -1,28 +1,24 @@
-
+
+
 
-  
-    
-      Privoxy sponsors
-    
-    
-    
-    
-  
-  
-    

-      Privoxy sponsors
-    

-    

-      This page will list Privoxy sponsors in the future.
-    

-    

-      If you want to become a sponsor, please have a look at the sponsor policy.
-    

-  
-
+
+  Privoxy sponsors
+  
+  
+  
+
+
+
+  
Privoxy sponsors

 
+  
This page will list Privoxy sponsors in the
+  future.

+
+  
If you want to become a sponsor, please have a look at the sponsor policy.

+
+
diff --git a/doc/webserver/team/index.html b/doc/webserver/team/index.html
index 9d39c9ad..d86cb65b 100644
--- a/doc/webserver/team/index.html
+++ b/doc/webserver/team/index.html
@@ -1,64 +1,53 @@
 
+
 
-  
-    
-    
-    
-      Privoxy - Team Photos
-    
-    
-
-  
-  
-    

-      Privoxy - Team Photos
-    

-    

-    

-      In our day jobs, we're all models ;-)
-    

-    
-      
-        
-        
-        
-        
-      
-      
-        
-        
-        
-        
-      
-    

-          
-        
-          
-        
-          
-        
-          
-        

-          
-        
-          
-        
-          
-        
-          
-        

-  
-
+  
+
+
+
+  
Privoxy - Team Photos

+  

+
+  
In our day jobs, we're all models ;-)

+
+  
+    
+      
+
+      
 
+      
+
+      
+    
+
+    
+      
+
+      
+
+      
+
+      
+    
+  

+
+
diff --git a/doc/webserver/user-manual/actions-file.html b/doc/webserver/user-manual/actions-file.html
index 3be4f2fa..f78109e2 100644
--- a/doc/webserver/user-manual/actions-file.html
+++ b/doc/webserver/user-manual/actions-file.html
@@ -1,493 +1,401 @@
-
+
+
 
-  
-    
-      Actions Files
-    
-    
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-  
-  
-    

-      
-        
-          
-        
-        
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-          
-        
-      

-            Privoxy 3.0.26 User Manual
-          

-            Prev
-          
-          
-            Next
-          

-      

+
+  Actions Files
+  
+  
+  
+  
+  
+  
+  
+
+
+
+  

+    
+      
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
Privoxy 3.0.26 User Manual
PrevNext

+    

+  

+
+  

+    
8. Actions
+    Files

+
+    
The actions files are used to define what actions Privoxy takes for which URLs, and thus determines
+    how ad images, cookies and various other aspects of HTTP content and
+    transactions are handled, and on which sites (or even parts thereof).
+    There are a number of such actions, with a wide range of functionality.
+    Each action does something a little different. These actions give us a
+    veritable arsenal of tools with which to exert our control, preferences
+    and independence. Actions can be combined so that their effects are
+    aggregated when applied against a given set of URLs.

+
+    
There are three action files included with Privoxy with differing purposes:

+
+    
    
+      
  • 
+        
    match-all.action - is used to define
+        which "actions" relating to
+        banner-blocking, images, pop-ups, content modification, cookie
+        handling etc should be applied by default. It should be the first
+        actions file loaded
    
+      
    • 
+
+      
  • 
+        
    default.action - defines many exceptions
+        (both positive and negative) from the default set of actions that's
+        configured in match-all.action. It is a set
+        of rules that should work reasonably well as-is for most users. This
+        file is only supposed to be edited by the developers. It should be
+        the second actions file loaded.
    
+      
    • 
+
+      
  • 
+        
    user.action - is intended to be for
+        local site preferences and exceptions. As an example, if your ISP or
+        your bank has specific requirements, and need special handling, this
+        kind of thing should go here. This file will not be upgraded.
    
+      
    • 
+
+      
  • 
+        
    Edit Set to
+        Cautious Set to Medium
+        Set to Advanced
    
+
+        
    These have increasing levels of aggressiveness and have no influence on your browsing
+        unless you select them explicitly in the editor. A default
+        installation should be pre-set to Cautious.
+        New users should try this for a while before adjusting the settings
+        to more aggressive levels. The more aggressive the settings, then the
+        more likelihood there is of problems such as sites not working as
+        they should.
    
+
+        
    The Edit button allows you to turn
+        each action on/off individually for fine-tuning. The Cautious button changes the actions list to
+        low/safe settings which will activate ad blocking and a minimal set
+        of Privoxy's features, and
+        subsequently there will be less of a chance for accidental problems.
+        The Medium button sets the list to a
+        medium level of other features and a low level set of privacy
+        features. The Advanced button sets the
+        list to a high level of ad blocking and medium level of privacy. See
+        the chart below. The latter three buttons over-ride any changes via
+        with the Edit button. More fine-tuning
+        can be done in the lower sections of this internal page.
    
+
+        
    While the actions file editor allows to enable these settings in
+        all actions files, they are only supposed to be enabled in the first
+        one to make sure you don't unintentionally overrule earlier
+        rules.
    
+
+        
    The default profiles, and their associated actions, as pre-defined
+        in default.action are:
    
+
+        
    
+          
+
+          
    Table 1. Default Configurations
    
+
+          
+            +            +            +            +
+            
+              
+                
+
+                
+
+                
+
+                
+              
+            
+
+            
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+                
+
+                
+              
+
+              
+                
+
+                
+
+                
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+                
+              
+            
+          
    




    FeatureCautiousMediumAdvanced
    Ad-blocking Aggressivenessmediumhighhigh
    Ad-filtering by sizenoyesyes
    Ad-filtering by linknonoyes
    Pop-up killingblocks onlyblocks onlyblocks only
    Privacy Featureslowmediummedium/high
    Cookie handlingnonesession-onlykill
    Referer forgingnoyesyes
    GIF de-animationnoyesyes
    Fast redirectsnonoyes
    HTML tamingnonoyes
    JavaScript tamingnonoyes
    Web-bug killingnoyesyes
    Image tag reorderingnoyesyes
    
+        
    
+      
    • 
+    

+
+    
The list of actions files to be used are defined in the main
+    configuration file, and are processed in the order they are defined (e.g.
+    default.action is typically processed before
+    user.action). The content of these can all be
+    viewed and edited from http://config.privoxy.org/show-status. The over-riding
+    principle when applying actions, is that the last action that matches a
+    given URL wins. The broadest, most general rules go first (defined in
+    default.action), followed by any exceptions
+    (typically also in default.action), which are
+    then followed lastly by any local preferences (typically in user.action). Generally, user.action has the last word.

+
+    
An actions file typically has multiple sections. If you want to use
+    "aliases" in an actions file, you have to
+    place the (optional) alias
+    section at the top of that file. Then comes the default set of rules
+    which will apply universally to all sites and pages (be very careful with using such a
+    universal set in user.action or any other
+    actions file after default.action, because it
+    will override the result from consulting any previous file). And then
+    below that, exceptions to the defined universal policies. You can regard
+    user.action as an appendix to default.action, with the advantage that it is a separate
+    file, which makes preserving your personal settings across Privoxy upgrades easier.

+
+    
Actions can be used to block anything you want, including ads,
+    banners, or just some obnoxious URL whose content you would rather not
+    see. Cookies can be accepted or rejected, or accepted only during the
+    current browser session (i.e. not written to disk), content can be
+    modified, some JavaScripts tamed, user-tracking fooled, and much more.
+    See below for a complete list of
+    actions.

+
+    

+      
8.1. Finding the
+      Right Mix

+
+      
Note that some actions, like
+      cookie suppression or script disabling, may render some sites unusable
+      that rely on these techniques to work properly. Finding the right mix
+      of actions is not always easy and certainly a matter of personal taste.
+      And, things can always change, requiring refinements in the
+      configuration. In general, it can be said that the more "aggressive" your default settings (in the top section
+      of the actions file) are, the more exceptions for "trusted" sites you will have to make later. If, for
+      example, you want to crunch all cookies per default, you'll have to
+      make exceptions from that rule for sites that you regularly use and
+      that require cookies for actually useful purposes, like maybe your
+      bank, favorite shop, or newspaper.

+
+      
We have tried to provide you with reasonable rules to start from in
+      the distribution actions files. But there is no general rule of thumb
+      on these things. There just are too many variables, and sites are
+      constantly changing. Sooner or later you will want to change the rules
+      (and read this chapter again :).

     

-    

-      

-        8. Actions Files
-      

-      

-        The actions files are used to define what actions Privoxy takes for which URLs, and thus
-        determines how ad images, cookies and various other aspects of HTTP
-        content and transactions are handled, and on which sites (or even
-        parts thereof). There are a number of such actions, with a wide range
-        of functionality. Each action does something a little different.
-        These actions give us a veritable arsenal of tools with which to
-        exert our control, preferences and independence. Actions can be
-        combined so that their effects are aggregated when applied against a
-        given set of URLs.
-      

-      

-        There are three action files included with Privoxy with differing purposes:
-      

-      

-      

-      
    
-        
  • 
-          
    
-            match-all.action - is used to define
-            which "actions" relating to
-            banner-blocking, images, pop-ups, content modification, cookie
-            handling etc should be applied by default. It should be the first
-            actions file loaded
-          
    
-        
    • 
-        
  • 
-          
    
-            default.action - defines many
-            exceptions (both positive and negative) from the default set of
-            actions that's configured in match-all.action. It is a set of rules that
-            should work reasonably well as-is for most users. This file is
-            only supposed to be edited by the developers. It should be the
-            second actions file loaded.
-          
    
-        
    • 
-        
  • 
-          
    
-            user.action - is intended to be for
-            local site preferences and exceptions. As an example, if your ISP
-            or your bank has specific requirements, and need special
-            handling, this kind of thing should go here. This file will not
-            be upgraded.
-          
    
-        
    • 
-        
  • 
-          
    
-            Edit Set
-            to Cautious Set to Medium
-            Set to Advanced
-          
    
-          
    
-            These have increasing levels of aggressiveness and have no influence on your
-            browsing unless you select them explicitly in the
-            editor. A default installation should be pre-set to
-            Cautious. New users should try this for
-            a while before adjusting the settings to more aggressive levels.
-            The more aggressive the settings, then the more likelihood there
-            is of problems such as sites not working as they should.
-          
    
-          
    
-            The Edit button allows you to turn
-            each action on/off individually for fine-tuning. The Cautious button changes the actions list to
-            low/safe settings which will activate ad blocking and a minimal
-            set of Privoxy's features, and
-            subsequently there will be less of a chance for accidental
-            problems. The Medium button sets
-            the list to a medium level of other features and a low level set
-            of privacy features. The Advanced
-            button sets the list to a high level of ad blocking and medium
-            level of privacy. See the chart below. The latter three buttons
-            over-ride any changes via with the Edit button. More fine-tuning can be done in
-            the lower sections of this internal page.
-          
    
-          
    
-            While the actions file editor allows to enable these settings in
-            all actions files, they are only supposed to be enabled in the
-            first one to make sure you don't unintentionally overrule earlier
-            rules.
-          
    
-          
    
-            The default profiles, and their associated actions, as
-            pre-defined in default.action are:
-          
    
-          
    
-          
    
-          
    
-            
-            
    
-              Table 1. Default Configurations
-            
    
-            
-              -              -              -              -              
-                
-                  
-                  
-                  
-                  
-                
-              
-              
-                
-                  
-                  
-                  
-                  
-                
-                
-                  
-                  
-                  
-                  
-                
-                
-                  
-                  
-                  
-                  
-                
-                
-                  
-                  
-                  
-                  
-                
-                
-                  
-                  
-                  
-                  
-                
-                
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-                  
-                  
-                  
-                
-                
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-                  
-                  
-                  
-                
-                
-                  
-                  
-                  
-                  
-                
-                
-                  
-                  
-                  
-                  
-                
-                
-                  
-                  
-                  
-                  
-                
-                
-                  
-                  
-                  
-                  
-                
-                
-                  
-                  
-                  
-                  
-                
-                
-                  
-                  
-                  
-                  
-                
-              
-            
    




    
-                    Feature
-                  
-                    Cautious
-                  
-                    Medium
-                  
-                    Advanced
-                  
    
-                    Ad-blocking Aggressiveness
-                  
-                    medium
-                  
-                    high
-                  
-                    high
-                  
    
-                    Ad-filtering by size
-                  
-                    no
-                  
-                    yes
-                  
-                    yes
-                  
    
-                    Ad-filtering by link
-                  
-                    no
-                  
-                    no
-                  
-                    yes
-                  
    
-                    Pop-up killing
-                  
-                    blocks only
-                  
-                    blocks only
-                  
-                    blocks only
-                  
    
-                    Privacy Features
-                  
-                    low
-                  
-                    medium
-                  
-                    medium/high
-                  
    
-                    Cookie handling
-                  
-                    none
-                  
-                    session-only
-                  
-                    kill
-                  
    
-                    Referer forging
-                  
-                    no
-                  
-                    yes
-                  
-                    yes
-                  
    
-                    GIF de-animation
-                  
-                    no
-                  
-                    yes
-                  
-                    yes
-                  
    
-                    Fast redirects
-                  
-                    no
-                  
-                    no
-                  
-                    yes
-                  
    
-                    HTML taming
-                  
-                    no
-                  
-                    no
-                  
-                    yes
-                  
    
-                    JavaScript taming
-                  
-                    no
-                  
-                    no
-                  
-                    yes
-                  
    
-                    Web-bug killing
-                  
-                    no
-                  
-                    yes
-                  
-                    yes
-                  
    
-                    Image tag reordering
-                  
-                    no
-                  
-                    yes
-                  
-                    yes
-                  
    
-          
    
-        
    • 
-      

 
-      

-        The list of actions files to be used are defined in the main
-        configuration file, and are processed in the order they are defined
-        (e.g. default.action is typically processed
-        before user.action). The content of these
-        can all be viewed and edited from http://config.privoxy.org/show-status. The over-riding
-        principle when applying actions, is that the last action that matches
-        a given URL wins. The broadest, most general rules go first (defined
-        in default.action), followed by any
-        exceptions (typically also in default.action), which are then followed lastly by
-        any local preferences (typically in user.action).
-        Generally, user.action has the last word.
-      

-      

-        An actions file typically has multiple sections. If you want to use
-        "aliases" in an actions file, you have to
-        place the (optional) alias
-        section at the top of that file. Then comes the default set of
-        rules which will apply universally to all sites and pages (be very careful with
-        using such a universal set in user.action
-        or any other actions file after default.action, because it will override the result
-        from consulting any previous file). And then below that, exceptions
-        to the defined universal policies. You can regard user.action as an appendix to default.action, with the advantage that it is a
-        separate file, which makes preserving your personal settings across
-        Privoxy upgrades easier.
-      

-      

-        Actions can be used to block anything you want, including ads,
-        banners, or just some obnoxious URL whose content you would rather
-        not see. Cookies can be accepted or rejected, or accepted only during
-        the current browser session (i.e. not written to disk), content can
-        be modified, some JavaScripts tamed, user-tracking fooled, and much
-        more. See below for a complete
-        list of actions.
-      

-      

-        

-          8.1. Finding the Right Mix
-        

-        

-          Note that some actions,
-          like cookie suppression or script disabling, may render some sites
-          unusable that rely on these techniques to work properly. Finding
-          the right mix of actions is not always easy and certainly a matter
-          of personal taste. And, things can always change, requiring
-          refinements in the configuration. In general, it can be said that
-          the more "aggressive" your default
-          settings (in the top section of the actions file) are, the more
-          exceptions for "trusted" sites you will
-          have to make later. If, for example, you want to crunch all cookies
-          per default, you'll have to make exceptions from that rule for
-          sites that you regularly use and that require cookies for actually
-          useful purposes, like maybe your bank, favorite shop, or newspaper.
-        

-        

-          We have tried to provide you with reasonable rules to start from in
-          the distribution actions files. But there is no general rule of
-          thumb on these things. There just are too many variables, and sites
-          are constantly changing. Sooner or later you will want to change
-          the rules (and read this chapter again :).
-        

-      

-      

-        

-          8.2. How to Edit
-        

-        

-          The easiest way to edit the actions files is with a browser by
-          using our browser-based editor, which can be reached from http://config.privoxy.org/show-status. Note: the config
-          file option enable-edit-actions must be
-          enabled for this to work. The editor allows both fine-grained
-          control over every single feature on a per-URL basis, and easy
-          choosing from wholesale sets of defaults like "Cautious", "Medium" or
-          "Advanced". Warning: the "Advanced" setting is more aggressive, and will be
-          more likely to cause problems for some sites. Experienced users
-          only!
-        

-        

-          If you prefer plain text editing to GUIs, you can of course also
-          directly edit the the actions files with your favorite text editor.
-          Look at default.action which is richly
-          commented with many good examples.
-        

-      

-      

-        

-          8.3. How Actions are Applied to
-          Requests
-        

-        

-          Actions files are divided into sections. There are special
-          sections, like the "alias" sections which will
-          be discussed later. For now let's concentrate on regular sections:
-          They have a heading line (often split up to multiple lines for
-          readability) which consist of a list of actions, separated by
-          whitespace and enclosed in curly braces. Below that, there is a
-          list of URL and tag patterns, each on a separate line.
-        

-        

-          To determine which actions apply to a request, the URL of the
-          request is compared to all URL patterns in each "action file". Every time it matches, the list of
-          applicable actions for the request is incrementally updated, using
-          the heading of the section in which the pattern is located. The
-          same is done again for tags and tag patterns later on.
-        

-        

-          If multiple applying sections set the same action differently, the
-          last match wins. If not, the effects are aggregated. E.g. a URL
-          might match a regular section with a heading line of { +handle-as-image },
-          then later another one with just { +block }, resulting in both actions to
-          apply. And there may well be cases where you will want to combine
-          actions together. Such a section then might look like:
-        

-        

-        

-        
-          
-            
+        
+      

-
+    

+      
8.2. How to
+      Edit

+
+      
The easiest way to edit the actions files is with a browser by using
+      our browser-based editor, which can be reached from http://config.privoxy.org/show-status. Note: the config file
+      option enable-edit-actions must be
+      enabled for this to work. The editor allows both fine-grained control
+      over every single feature on a per-URL basis, and easy choosing from
+      wholesale sets of defaults like "Cautious",
+      "Medium" or "Advanced". Warning: the "Advanced" setting is more aggressive, and will be more
+      likely to cause problems for some sites. Experienced users only!

+
+      
If you prefer plain text editing to GUIs, you can of course also
+      directly edit the the actions files with your favorite text editor.
+      Look at default.action which is richly
+      commented with many good examples.

+    

+
+    

+      
8.3. How
+      Actions are Applied to Requests

+
+      
Actions files are divided into sections. There are special sections,
+      like the "alias" sections which will be
+      discussed later. For now let's concentrate on regular sections: They
+      have a heading line (often split up to multiple lines for readability)
+      which consist of a list of actions, separated by whitespace and
+      enclosed in curly braces. Below that, there is a list of URL and tag
+      patterns, each on a separate line.

+
+      
To determine which actions apply to a request, the URL of the
+      request is compared to all URL patterns in each "action file". Every time it matches, the list of
+      applicable actions for the request is incrementally updated, using the
+      heading of the section in which the pattern is located. The same is
+      done again for tags and tag patterns later on.

+
+      
If multiple applying sections set the same action differently, the
+      last match wins. If not, the effects are aggregated. E.g. a URL might
+      match a regular section with a heading line of {
+      +handle-as-image
+      }, then later another one with just {
+      +block }, resulting in
+      both actions to
+      apply. And there may well be cases where you will want to combine
+      actions together. Such a section then might look like:

+
+      
+        
+          
-          
-        

+            
   { +handle-as-image  +block{Banner ads.} }
   # Block these as if they were images. Send no block page.
@@ -495,547 +403,467 @@ Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
    media.example.com/.*banners
    .example.com/images/ads/
 

-            

+          

+
+      
You can trace this process for URL patterns and any given URL by
+      visiting http://config.privoxy.org/show-url-info.

+
+      
Examples and more detail on this is provided in the Appendix,
+      Troubleshooting: Anatomy of an
+      Action section.

+    

+
+    

+      
8.4.
+      Patterns

+
+      
As mentioned, Privoxy uses
+      "patterns" to determine what actions might apply to which
+      sites and pages your browser attempts to access. These "patterns" use wild card type pattern matching to achieve a
+      high degree of flexibility. This allows one expression to be expanded
+      and potentially match against many similar patterns.

+
+      
Generally, an URL pattern has the form <host><port>/<path>, where the
+      <host>, the <port> and the <path> are optional. (This is why the special
+      / pattern matches all URLs). Note that the
+      protocol portion of the URL pattern (e.g. http://) should not be included in the pattern. This is assumed
+      already!

+
+      
The pattern matching syntax is different for the host and path parts
+      of the URL. The host part uses a simple globbing type matching
+      technique, while the path part uses more flexible "Regular Expressions" (POSIX
+      1003.2).

+
+      
The port part of a pattern is a decimal port number preceded by a
+      colon (:). If the host part contains a
+      numerical IPv6 address, it has to be put into angle brackets
+      (<, >).

+
+      

+        

+          
www.example.com/

+
+          

+            
is a host-only pattern and will match any request to
+            www.example.com, regardless of which
+            document on that server is requested. So ALL pages in this domain
+            would be covered by the scope of this action. Note that a simple
+            example.com is different and would NOT
+            match.

+          

+
+          
www.example.com

+
+          

+            
means exactly the same. For host-only patterns, the trailing
+            / may be omitted.

+          

+
+          
www.example.com/index.html

+
+          

+            
matches all the documents on www.example.com whose name starts with /index.html.

+          

+
+          
www.example.com/index.html$

+
+          

+            
matches only the single document /index.html on www.example.com.

+          

+
+          
/index.html$

+
+          

+            
matches the document /index.html,
+            regardless of the domain, i.e. on any web server
+            anywhere.

+          

+
+          
/

+
+          

+            
Matches any URL because there's no requirement for either the
+            domain or the path to match anything.

+          

+
+          
:8000/

+
+          

+            
Matches any URL pointing to TCP port 8000.

+          

+
+          
10.0.0.1/

+
+          

+            
Matches any URL with the host address 10.0.0.1. (Note that the real URL uses plain
+            brackets, not angle brackets.)

+          

+
+          
<2001:db8::1>/

 
-        

-          You can trace this process for URL patterns and any given URL by
-          visiting http://config.privoxy.org/show-url-info.
-        

-        

-          Examples and more detail on this is provided in the Appendix, Troubleshooting: Anatomy of an
-          Action section.
-        

+          

+            
Matches any URL with the host address 2001:db8::1. (Note that the real URL uses plain
+            brackets, not angle brackets.)

+          

+
+          
index.html

+
+          

+            
matches nothing, since it would be interpreted as a domain
+            name and there is no top-level domain called .html. So its a mistake.

+          

+        

       

-      

-        

-          8.4. Patterns
-        

-        

-          As mentioned, Privoxy uses "patterns" to determine what actions might apply to
-          which sites and pages your browser attempts to access. These "patterns" use wild card type pattern matching to
-          achieve a high degree of flexibility. This allows one expression to
-          be expanded and potentially match against many similar patterns.
-        

-        

-          Generally, an URL pattern has the form <host><port>/<path>, where the <host>, the <port> and the <path> are optional. (This is why the special
-          / pattern matches all URLs). Note that the
-          protocol portion of the URL pattern (e.g. http://) should not be included in the pattern. This is
-          assumed already!
-        

-        

-          The pattern matching syntax is different for the host and path
-          parts of the URL. The host part uses a simple globbing type
-          matching technique, while the path part uses more flexible "Regular Expressions" (POSIX
-          1003.2).
-        

-        

-          The port part of a pattern is a decimal port number preceded by a
-          colon (:). If the host part contains a
-          numerical IPv6 address, it has to be put into angle brackets (<, >).
-        

+
+      

+        
8.4.1. The
+        Host Pattern

+
+        
The matching of the host part offers some flexible options: if the
+        host pattern starts or ends with a dot, it becomes unanchored at that
+        end. The host pattern is often referred to as domain pattern as it is
+        usually used to match domain names and not IP addresses. For
+        example:

+
         

           

-            

-              www.example.com/
-            

-            

-              

-                is a host-only pattern and will match any request to www.example.com, regardless of which
-                document on that server is requested. So ALL pages in this
-                domain would be covered by the scope of this action. Note
-                that a simple example.com is
-                different and would NOT match.
-              

-            

-            

-              www.example.com
-            

-            

-              

-                means exactly the same. For host-only patterns, the trailing
-                / may be omitted.
-              

-            

-            

-              www.example.com/index.html
-            

-            

-              

-                matches all the documents on www.example.com whose name starts with /index.html.
-              

-            

-            

-              www.example.com/index.html$
-            

-            

-              

-                matches only the single document /index.html on www.example.com.
-              

-            

-            

-              /index.html$
-            

-            

-              

-                matches the document /index.html,
-                regardless of the domain, i.e. on any web server anywhere.
-              

-            

-            

-              /
-            

-            

-              

-                Matches any URL because there's no requirement for either the
-                domain or the path to match anything.
-              

-            

-            

-              :8000/
-            

-            

-              

-                Matches any URL pointing to TCP port 8000.
-              

-            

-            

-              10.0.0.1/
-            

-            

-              

-                Matches any URL with the host address 10.0.0.1. (Note that the real URL uses plain
-                brackets, not angle brackets.)
-              

-            

-            

-              <2001:db8::1>/
-            

-            

-              

-                Matches any URL with the host address 2001:db8::1. (Note that the real URL uses
-                plain brackets, not angle brackets.)
-              

-            

-            

-              index.html
-            

-            

-              

-                matches nothing, since it would be interpreted as a domain
-                name and there is no top-level domain called .html. So its a mistake.
-              

+            
.example.com

+
+            

+              
matches any domain with first-level domain com and second-level domain example. For example www.example.com, example.com and foo.bar.baz.example.com. Note that it wouldn't
+              match if the second-level domain was another-example.

+            

+
+            
www.

+
+            

+              
matches any domain that STARTS with www.
+              (It also matches the domain www but
+              most of the time that doesn't matter.)

+            

+
+            
.example.

+
+            

+              
matches any domain that CONTAINS .example.. And, by the way, also included would
+              be any files or documents that exist within that domain since
+              no path limitations are specified. (Correctly speaking: It
+              matches any FQDN that contains example
+              as a domain.) This might be www.example.com, news.example.de, or www.example.net/cgi/testing.pl for instance. All
+              these cases are matched.

             

           

         

-        

-          

-            8.4.1. The Host Pattern
-          

-          

-            The matching of the host part offers some flexible options: if
-            the host pattern starts or ends with a dot, it becomes unanchored
-            at that end. The host pattern is often referred to as domain
-            pattern as it is usually used to match domain names and not IP
-            addresses. For example:
-          

-          

-            

-              

-                .example.com
-              

-              

-                

-                  matches any domain with first-level domain com and second-level domain example. For example www.example.com, example.com and foo.bar.baz.example.com. Note that it
-                  wouldn't match if the second-level domain was another-example.
-                

-              

-              

-                www.
-              

-              

-                

-                  matches any domain that STARTS with www. (It also matches the domain www but most of the time that doesn't
-                  matter.)
-                

-              

-              

-                .example.
-              

-              

-                

-                  matches any domain that CONTAINS .example.. And, by the way, also included
-                  would be any files or documents that exist within that
-                  domain since no path limitations are specified. (Correctly
-                  speaking: It matches any FQDN that contains example as a domain.) This might be www.example.com, news.example.de, or www.example.net/cgi/testing.pl for instance.
-                  All these cases are matched.
-                

-              

-            

-          

-          

-            Additionally, there are wild-cards that you can use in the domain
-            names themselves. These work similarly to shell globbing type
-            wild-cards: "*" represents zero or
-            more arbitrary characters (this is equivalent to the "Regular Expression" based
-            syntax of ".*"), "?" represents any single character (this is
-            equivalent to the regular expression syntax of a simple "."), and you can define "character classes" in square brackets which is
-            similar to the same regular expression technique. All of this can
-            be freely mixed:
-          

-          

-            

-              

-                ad*.example.com
-              

-              

-                

-                  matches "adserver.example.com",
-                  "ads.example.com", etc but not
-                  "sfads.example.com"
-                

-              

-              

-                *ad*.example.com
-              

-              

-                

-                  matches all of the above, and then some.
-                

-              

-              

-                .?pix.com
-              

-              

-                

-                  matches www.ipix.com, pictures.epix.com, a.b.c.d.e.upix.com etc.
-                

-              

-              

-                www[1-9a-ez].example.c*
-              

-              

-                

-                  matches www1.example.com, www4.example.cc, wwwd.example.cy, wwwz.example.com etc., but not wwww.example.com.
-                

-              

-            

-          

-          

-            While flexible, this is not the sophistication of full regular
-            expression based syntax.
-          

-        

-        

-          

-            8.4.2. The Path Pattern
-          

-          

-            Privoxy uses "modern" POSIX 1003.2 "Regular Expressions" for
-            matching the path portion (after the slash), and is thus more
-            flexible.
-          

-          

-            There is an Appendix with a
-            brief quick-start into regular expressions, you also might want
-            to have a look at your operating system's documentation on
-            regular expressions (try man re_format).
-          

-          

-            Note that the path pattern is automatically left-anchored at the
-            "/", i.e. it matches as if it would
-            start with a "^" (regular expression
-            speak for the beginning of a line).
-          

-          

-            Please also note that matching in the path is CASE INSENSITIVE by
-            default, but you can switch to case sensitive at any point in the
-            pattern by using the "(?-i)" switch:
-            www.example.com/(?-i)PaTtErN.* will
-            match only documents whose path starts with PaTtErN in exactly this capitalization.
-          

-          

-            

-              

-                .example.com/.*
-              

-              

-                

-                  Is equivalent to just ".example.com", since any documents within
-                  that domain are matched with or without the ".*" regular expression. This is redundant
-                

-              

-              

-                .example.com/.*/index.html$
-              

-              

-                

-                  Will match any page in the domain of "example.com" that is named "index.html", and that is part of some path.
-                  For example, it matches "www.example.com/testing/index.html" but NOT
-                  "www.example.com/index.html"
-                  because the regular expression called for at least two
-                  "/'s", thus the path
-                  requirement. It also would match "www.example.com/testing/index_html",
-                  because of the special meta-character ".".
-                

-              

-              

-                .example.com/(.*/)?index\.html$
-              

-              

-                

-                  This regular expression is conditional so it will match any
-                  page named "index.html"
-                  regardless of path which in this case can have one or more
-                  "/'s". And this one must contain
-                  exactly ".html" (but does not
-                  have to end with that!).
-                

-              

-              

-                .example.com/(.*/)(ads|banners?|junk)
-              

-              

-                

-                  This regular expression will match any path of "example.com" that contains any of the words
-                  "ads", "banner", "banners" (because of the "?") or "junk".
-                  The path does not have to end in these words, just contain
-                  them.
-                

-              

-              

-                .example.com/(.*/)(ads|banners?|junk)/.*\.(jpe?g|gif|png)$
-              

-              

-                

-                  This is very much the same as above, except now it must end
-                  in either ".jpg", ".jpeg", ".gif"
-                  or ".png". So this one is
-                  limited to common image formats.
-                

-              

-            

-          

-          

-            There are many, many good examples to be found in default.action, and more tutorials below in Appendix on regular expressions.
-          

-        

-        

-          

-            8.4.3. The Request Tag Pattern
-          

-          

-            Request tag patterns are used to change the applying actions
-            based on the request's tags. Tags can be created based on HTTP
-            headers with either the client-header-tagger
-            or the server-header-tagger
-            action.
-          

-          

-            Request tag patterns have to start with "TAG:", so Privoxy can tell them apart from other
-            patterns. Everything after the colon including white space, is
-            interpreted as a regular expression with path pattern syntax,
-            except that tag patterns aren't left-anchored automatically
-            (Privoxy doesn't silently add a
-            "^", you have to do it yourself if you
-            need it).
-          

-          

-            To match all requests that are tagged with "foo" your pattern line should be "TAG:^foo$", "TAG:foo"
-            would work as well, but it would also match requests whose tags
-            contain "foo" somewhere. "TAG: foo" wouldn't work as it requires white
-            space.
-          

-          

-            Sections can contain URL and request tag patterns at the same
-            time, but request tag patterns are checked after the URL patterns
-            and thus always overrule them, even if they are located before
-            the URL patterns.
-          

-          

-            Once a new request tag is added, Privoxy checks right away if
-            it's matched by one of the request tag patterns and updates the
-            action settings accordingly. As a result request tags can be used
-            to activate other tagger actions, as long as these other taggers
-            look for headers that haven't already be parsed.
-          

-          

-            For example you could tag client requests which use the POST method, then use this tag to activate
-            another tagger that adds a tag if cookies are sent, and then use
-            a block action based on the cookie tag. This allows the outcome
-            of one action, to be input into a subsequent action. However if
-            you'd reverse the position of the described taggers, and
-            activated the method tagger based on the cookie tagger, no method
-            tags would be created. The method tagger would look for the
-            request line, but at the time the cookie tag is created, the
-            request line has already been parsed.
-          

-          

-            While this is a limitation you should be aware of, this kind of
-            indirection is seldom needed anyway and even the example doesn't
-            make too much sense.
-          

+
+        
Additionally, there are wild-cards that you can use in the domain
+        names themselves. These work similarly to shell globbing type
+        wild-cards: "*" represents zero or more
+        arbitrary characters (this is equivalent to the "Regular Expression" based
+        syntax of ".*"), "?" represents any single character (this is
+        equivalent to the regular expression syntax of a simple "."), and you can define "character classes" in square brackets which is
+        similar to the same regular expression technique. All of this can be
+        freely mixed:

+
+        

+          

+            
ad*.example.com

+
+            

+              
matches "adserver.example.com",
+              "ads.example.com", etc but not
+              "sfads.example.com"

+            

+
+            
*ad*.example.com

+
+            

+              
matches all of the above, and then some.

+            

+
+            
.?pix.com

+
+            

+              
matches www.ipix.com, pictures.epix.com, a.b.c.d.e.upix.com etc.

+            

+
+            
www[1-9a-ez].example.c*

+
+            

+              
matches www1.example.com,
+              www4.example.cc, wwwd.example.cy, wwwz.example.com etc., but not wwww.example.com.

+            

+          

         

-        

-          

-            8.4.4. The Negative Request Tag
-            Patterns
-          

-          

-            To match requests that do not have a certain request tag, specify
-            a negative tag pattern by prefixing the tag pattern line with
-            either "NO-REQUEST-TAG:" or "NO-RESPONSE-TAG:" instead of "TAG:".
-          

-          

-            Negative request tag patterns created with "NO-REQUEST-TAG:" are checked after all client
-            headers are scanned, the ones created with "NO-RESPONSE-TAG:" are checked after all server
-            headers are scanned. In both cases all the created tags are
-            considered.
-          

+
+        
While flexible, this is not the sophistication of full regular
+        expression based syntax.

+      

+
+      

+        
8.4.2. The
+        Path Pattern

+
+        
Privoxy uses "modern" POSIX 1003.2 "Regular Expressions" for
+        matching the path portion (after the slash), and is thus more
+        flexible.

+
+        
There is an Appendix with a
+        brief quick-start into regular expressions, you also might want to
+        have a look at your operating system's documentation on regular
+        expressions (try man re_format).

+
+        
Note that the path pattern is automatically left-anchored at the
+        "/", i.e. it matches as if it would start
+        with a "^" (regular expression speak for
+        the beginning of a line).

+
+        
Please also note that matching in the path is CASE INSENSITIVE by
+        default, but you can switch to case sensitive at any point in the
+        pattern by using the "(?-i)" switch:
+        www.example.com/(?-i)PaTtErN.* will match
+        only documents whose path starts with PaTtErN in exactly this capitalization.

+
+        

+          

+            
.example.com/.*

+
+            

+              
Is equivalent to just ".example.com", since any documents within that
+              domain are matched with or without the ".*" regular expression. This is redundant

+            

+
+            
.example.com/.*/index.html$

+
+            

+              
Will match any page in the domain of "example.com" that is named "index.html", and that is part of some path. For
+              example, it matches "www.example.com/testing/index.html" but NOT
+              "www.example.com/index.html" because
+              the regular expression called for at least two "/'s", thus the path requirement. It also would
+              match "www.example.com/testing/index_html", because of
+              the special meta-character ".".

+            

+
+            
.example.com/(.*/)?index\.html$

+
+            

+              
This regular expression is conditional so it will match any
+              page named "index.html" regardless
+              of path which in this case can have one or more "/'s". And this one must contain exactly
+              ".html" (but does not have to end
+              with that!).

+            

+
+            
.example.com/(.*/)(ads|banners?|junk)

+
+            

+              
This regular expression will match any path of "example.com" that contains any of the words
+              "ads", "banner", "banners"
+              (because of the "?") or "junk". The path does not have to end in these
+              words, just contain them.

+            

+
+            
.example.com/(.*/)(ads|banners?|junk)/.*\.(jpe?g|gif|png)$

+
+            

+              
This is very much the same as above, except now it must end
+              in either ".jpg", ".jpeg", ".gif" or
+              ".png". So this one is limited to
+              common image formats.

+            

+          

         

-        

-          

-            8.4.5. The Client Tag Pattern
-          

-          

-            
-              
-                
-              
-              
-                
-              
-            

-                  Warning
-                

-                  

-                    This is an experimental feature. The syntax is likely to
-                    change in future versions.
-                  

-                

-          

-          

-            Client tag patterns are not set based on HTTP headers but based
-            on the client's IP address. Users can enable them themselves, but
-            the Privoxy admin controls which tags are available and what
-            their effect is.
-          

-          

-            After a client-specific tag has been defined with the client-specific-tag,
-            directive, action sections can be activated based on the tag by
-            using a CLIENT-TAG pattern. The CLIENT-TAG pattern is evaluated
-            at the same priority as URL patterns, as a result the last
-            matching pattern wins. Tags that are created based on client or
-            server headers are evaluated later on and can overrule CLIENT-TAG
-            and URL patterns!
-          

-          

-            The tag is set for all requests that come from clients that
-            requested it to be set. Note that "clients" are differentiated by
-            IP address, if the IP address changes the tag has to be requested
-            again.
-          

-          

-            Clients can request tags to be set by using the CGI interface http://config.privoxy.org/client-tags.
-          

-          

-            Example:
-          

-          

-          

-          
+
+        
There are many, many good examples to be found in default.action, and more tutorials below in Appendix on regular expressions.

+      
+
+      

+        
8.4.3. The
+        Request Tag Pattern

+
+        
Request tag patterns are used to change the applying actions based
+        on the request's tags. Tags can be created based on HTTP headers with
+        either the client-header-tagger or
+        the server-header-tagger
+        action.

+
+        
Request tag patterns have to start with "TAG:", so Privoxy
+        can tell them apart from other patterns. Everything after the colon
+        including white space, is interpreted as a regular expression with
+        path pattern syntax, except that tag patterns aren't left-anchored
+        automatically (Privoxy doesn't
+        silently add a "^", you have to do it
+        yourself if you need it).

+
+        
To match all requests that are tagged with "foo" your pattern line should be "TAG:^foo$", "TAG:foo"
+        would work as well, but it would also match requests whose tags
+        contain "foo" somewhere. "TAG: foo" wouldn't work as it requires white
+        space.

+
+        
Sections can contain URL and request tag patterns at the same
+        time, but request tag patterns are checked after the URL patterns and
+        thus always overrule them, even if they are located before the URL
+        patterns.

+
+        
Once a new request tag is added, Privoxy checks right away if it's
+        matched by one of the request tag patterns and updates the action
+        settings accordingly. As a result request tags can be used to
+        activate other tagger actions, as long as these other taggers look
+        for headers that haven't already be parsed.

+
+        
For example you could tag client requests which use the POST method, then use this tag to activate another
+        tagger that adds a tag if cookies are sent, and then use a block
+        action based on the cookie tag. This allows the outcome of one
+        action, to be input into a subsequent action. However if you'd
+        reverse the position of the described taggers, and activated the
+        method tagger based on the cookie tagger, no method tags would be
+        created. The method tagger would look for the request line, but at
+        the time the cookie tag is created, the request line has already been
+        parsed.

+
+        
While this is a limitation you should be aware of, this kind of
+        indirection is seldom needed anyway and even the example doesn't make
+        too much sense.

+      

+
+      

+        
8.4.4. The Negative Request Tag
+        Patterns

+
+        
To match requests that do not have a certain request tag, specify
+        a negative tag pattern by prefixing the tag pattern line with either
+        "NO-REQUEST-TAG:" or "NO-RESPONSE-TAG:" instead of "TAG:".

+
+        
Negative request tag patterns created with "NO-REQUEST-TAG:" are checked after all client headers
+        are scanned, the ones created with "NO-RESPONSE-TAG:" are checked after all server
+        headers are scanned. In both cases all the created tags are
+        considered.

+      

+
+      

+        
8.4.5. The Client Tag Pattern

+
+        

+          

-              
+            
+
+            
+              
+            
+          

             

-
+              
Warning

+                
This is an experimental feature. The syntax is likely to
+                change in future versions.

+              

+        

+
+        
Client tag patterns are not set based on HTTP headers but based on
+        the client's IP address. Users can enable them themselves, but the
+        Privoxy admin controls which tags are available and what their effect
+        is.

+
+        
After a client-specific tag has been defined with the client-specific-tag, directive,
+        action sections can be activated based on the tag by using a
+        CLIENT-TAG pattern. The CLIENT-TAG pattern is evaluated at the same
+        priority as URL patterns, as a result the last matching pattern wins.
+        Tags that are created based on client or server headers are evaluated
+        later on and can overrule CLIENT-TAG and URL patterns!

+
+        
The tag is set for all requests that come from clients that
+        requested it to be set. Note that "clients" are differentiated by IP
+        address, if the IP address changes the tag has to be requested
+        again.

+
+        
Clients can request tags to be set by using the CGI interface
+        http://config.privoxy.org/client-tags.

+
+        
Example:

+
+        
+          
+            
-            
-          

+              
 # If the admin defined the client-specific-tag circumvent-blocks,
 # and the request comes from a client that previously requested
 # the tag to be set, overrule all previous +block actions that
@@ -1048,117 +876,98 @@ CLIENT-TAG:^circumvent-blocks$
 {+block{Nobody is supposed to request this.}}
 example.org/blocked-example-page
 

-              

-        

+            

       

-      

-        

-          8.5. Actions
-        

-        

-          All actions are disabled by default, until they are explicitly
-          enabled somewhere in an actions file. Actions are turned on if
-          preceded with a "+", and turned off if
-          preceded with a "-". So a +action means "do that
-          action", e.g. +block means "please block URLs that match the following
-          patterns", and -block means "don't block URLs that match the following patterns,
-          even if +block previously
-          applied."
-        

-        

-          Again, actions are invoked by placing them on a line, enclosed in
-          curly braces and separated by whitespace, like in {+some-action -some-other-action{some-parameter}},
-          followed by a list of URL patterns, one per line, to which they
-          apply. Together, the actions line and the following pattern lines
-          make up a section of the actions file.
-        

-        

-          Actions fall into three categories:
-        

-        

-        

-        
    
-          
  • 
-            
    
-              Boolean, i.e the action can only be "enabled" or "disabled". Syntax:
-            
    
-            
    
-            
    
-            
-              
-                
+                
+              
    
-
    +    
+
+    
    
+      
    8.5. Actions
    
+
+      
    All actions are disabled by default, until they are explicitly
+      enabled somewhere in an actions file. Actions are turned on if preceded
+      with a "+", and turned off if preceded with
+      a "-". So a +action
+      means "do that action", e.g. +block means "please block URLs that
+      match the following patterns", and -block means "don't block URLs that
+      match the following patterns, even if +block
+      previously applied."
    
+
+      
    Again, actions are invoked by placing them on a line, enclosed in
+      curly braces and separated by whitespace, like in {+some-action -some-other-action{some-parameter}},
+      followed by a list of URL patterns, one per line, to which they apply.
+      Together, the actions line and the following pattern lines make up a
+      section of the actions file.
    
+
+      
    Actions fall into three categories:
    
+
+      
      
+        
    • 
+          
      Boolean, i.e the action can only be "enabled" or "disabled".
+          Syntax:
      
+
+          
+            
+              
-              
-            
      
+                
         +name        # enable action name
-  -name        # disable action name
+  -name        # disable action name
 
      
-                
      
-
-            
      
-              Example: +handle-as-image
-            
      
-          
      • 
-          
    • 
-            
      
-              Parameterized, where some value is required in order to enable
-              this type of action. Syntax:
-            
      
-            
      
-            
      
-            
-              
-                
+            
+          
      
-
      +              
      
+
+          
      Example: +handle-as-image
      
+        
      • 
+
+        
    • 
+          
      Parameterized, where some value is required in order to enable
+          this type of action. Syntax:
      
+
+          
+            
+              
-              
-            
      
+                
         +name{param}  # enable action and set parameter to param,
+"REPLACEABLE">param}  # enable action and set parameter to param,
                # overwriting parameter from previous match if necessary
   -name         # disable action. The parameter can be omitted
 
      
-                
      
-
-            
      
-              Note that if the URL matches multiple positive forms of a
-              parameterized action, the last match wins, i.e. the params from
-              earlier matches are simply ignored.
-            
      
-            
      
-              Example: +hide-user-agent{Mozilla/5.0 (X11;
-              U; FreeBSD i386; en-US; rv:1.8.1.4) Gecko/20070602
-              Firefox/2.0.0.4}
-            
      
-          
      • 
-          
    • 
-            
      
-              Multi-value. These look exactly like parameterized actions, but
-              they behave differently: If the action applies multiple times
-              to the same URL, but with different parameters, all the parameters
-              from all
-              matches are remembered. This is used for actions that can be
-              executed for the same request repeatedly, like adding multiple
-              headers, or filtering through multiple filters. Syntax:
-            
      
-            
      
-            
      
-            
-              
-                
+            
+          
      
-
      +              
      
+
+          
      Note that if the URL matches multiple positive forms of a
+          parameterized action, the last match wins, i.e. the params from
+          earlier matches are simply ignored.
      
+
+          
      Example: +hide-user-agent{Mozilla/5.0 (X11;
+          U; FreeBSD i386; en-US; rv:1.8.1.4) Gecko/20070602
+          Firefox/2.0.0.4}
      
+        
      • 
+
+        
    • 
+          
      Multi-value. These look exactly like parameterized actions, but
+          they behave differently: If the action applies multiple times to
+          the same URL, but with different parameters, all the parameters from
+          all matches
+          are remembered. This is used for actions that can be executed for
+          the same request repeatedly, like adding multiple headers, or
+          filtering through multiple filters. Syntax:
      
+
+          
+            
+              
-              
-            
      
+                
         +name{param}   # enable action and add param to the list of parameters
@@ -1169,111 +978,92 @@ class="REPLACEABLE">param,
   -name          # disable this action completely and remove all parameters from the list
 
      
-                
      
-
-            
      
-              Examples: +add-header{X-Fun-Header: Some
-              text} and +filter{html-annoyances}
-            
      
-          
      • 
-        
    
-
-        
    
-          If nothing is specified in any actions file, no "actions" are taken. So in this case Privoxy would just be a normal, non-blocking,
-          non-filtering proxy. You must specifically enable the privacy and
-          blocking features you need (although the provided default actions
-          files will give a good starting point).
-        
    
-        
    
-          Later defined action sections always over-ride earlier ones of the
-          same type. So exceptions to any rules you make, should come in the
-          latter part of the file (or in a file that is processed later when
-          using multiple actions files such as user.action). For multi-valued actions, the actions
-          are applied in the order they are specified. Actions files are
-          processed in the order they are defined in config (the default installation has three actions
-          files). It also quite possible for any given URL to match more than
-          one "pattern" (because of wildcards and
-          regular expressions), and thus to trigger more than one set of
-          actions! Last match wins.
-        
    
-        
    
-          The list of valid Privoxy actions
-          are:
-        
    
-        
    
-          
    
-            8.5.1. add-header
-          
    
-          
    
-            
    
-              
    
-                Typical use:
-              
    
-              
    
-                
    
-                  Confuse log analysis, custom applications
-                
    
-              
    
-              
    
-                Effect:
-              
    
-              
    
-                
    
-                  Sends a user defined HTTP header to the web server.
-                
    
-              
    
-              
    
-                Type:
-              
    
-              
    
-                
    
-                  Multi-value.
-                
    
-              
    
-              
    
-                Parameter:
-              
    
-              
    
-                
    
-                  Any string value is possible. Validity of the defined HTTP
-                  headers is not checked. It is recommended that you use the
-                  "X-"
-                  prefix for custom headers.
-                
    
-              
    
-              
    
-                Notes:
-              
    
-              
    
-                
    
-                  This action may be specified multiple times, in order to
-                  define multiple headers. This is rarely needed for the
-                  typical user. If you don't know what "HTTP headers" are, you definitely don't
-                  need to worry about this one.
-                
    
-                
    
-                  Headers added by this action are not modified by other
-                  actions.
-                
    
-              
    
-              
    
-                Example usage:
-              
    
-              
    
-                
    
-                
    
-                
-                  
-                    
+            
+          
    
-
    +              
    
+
+          
    Examples: +add-header{X-Fun-Header: Some
+          text} and +filter{html-annoyances}
    
+        
+      
+
+      
    If nothing is specified in any actions file, no "actions" are taken. So in this case Privoxy would just be a normal, non-blocking,
+      non-filtering proxy. You must specifically enable the privacy and
+      blocking features you need (although the provided default actions files
+      will give a good starting point).
    
+
+      
    Later defined action sections always over-ride earlier ones of the
+      same type. So exceptions to any rules you make, should come in the
+      latter part of the file (or in a file that is processed later when
+      using multiple actions files such as user.action). For multi-valued actions, the actions are
+      applied in the order they are specified. Actions files are processed in
+      the order they are defined in config (the
+      default installation has three actions files). It also quite possible
+      for any given URL to match more than one "pattern" (because of wildcards and regular
+      expressions), and thus to trigger more than one set of actions! Last
+      match wins.
    
+
+      
    The list of valid Privoxy actions
+      are:
    
+
+      
    
+        
    8.5.1.
+        add-header
    
+
+        
    
+          
    
+            
    Typical use:
    
+
+            
    
+              
    Confuse log analysis, custom applications
    
+            
    
+
+            
    Effect:
    
+
+            
    
+              
    Sends a user defined HTTP header to the web server.
    
+            
    
+
+            
    Type:
    
+
+            
    
+              
    Multi-value.
    
+            
    
+
+            
    Parameter:
    
+
+            
    
+              
    Any string value is possible. Validity of the defined HTTP
+              headers is not checked. It is recommended that you use the
+              "X-" prefix
+              for custom headers.
    
+            
    
+
+            
    Notes:
    
+
+            
    
+              
    This action may be specified multiple times, in order to
+              define multiple headers. This is rarely needed for the typical
+              user. If you don't know what "HTTP
+              headers" are, you definitely don't need to worry about
+              this one.
    
+
+              
    Headers added by this action are not modified by other
+              actions.
    
+            
    
+
+            
    Example usage:
    
+
+            
    
+              
+                
+                  
-                  
-                
    
+                    
     # Add a DNT ("Do not track") header to all requests,
 # event to those that already have one.
 #
@@ -1285,113 +1075,95 @@ class="REPLACEABLE">param,
 {+add-header{DNT: 1}}
 /
 
    
-                    
    
-              
    
-            
    
-          
    
+                  
    
+            
+          
         

-        

-          

-            8.5.2. block
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Block ads or other unwanted content
-                

-              

-              

-                Effect:
-              

-              

-                

-                  Requests for URLs to which this action applies are blocked,
-                  i.e. the requests are trapped by Privoxy and the requested URL is never
-                  retrieved, but is answered locally with a substitute page
-                  or image, as determined by the handle-as-image,
-                  set-image-blocker,
-                  and handle-as-empty-document
-                  actions.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Parameterized.
-                

-              

-              

-                Parameter:
-              

-              

-                

-                  A block reason that should be given to the user.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  Privoxy sends a special
-                  "BLOCKED" page for requests to
-                  blocked pages. This page contains the block reason given as
-                  parameter, a link to find out why the block action applies,
-                  and a click-through to the blocked content (the latter only
-                  if the force feature is available and enabled).
-                

-                

-                  A very important exception occurs if both block and handle-as-image,
-                  apply to the same request: it will then be replaced by an
-                  image. If set-image-blocker
-                  (see below) also applies, the type of image will be
-                  determined by its parameter, if not, the standard
-                  checkerboard pattern is sent.
-                

-                

-                  It is important to understand this process, in order to
-                  understand how Privoxy
-                  deals with ads and other unwanted content. Blocking is a
-                  core feature, and one upon which various other features
-                  depend.
-                

-                

-                  The filter action can
-                  perform a very similar task, by "blocking" banner images and other content
-                  through rewriting the relevant URLs in the document's HTML
-                  source, so they don't get requested in the first place.
-                  Note that this is a totally different technique, and it's
-                  easy to confuse the two.
-                

-              

-              

-                Example usage (section):
-              

-              

-                

-                

-                
-                  
-                    
+                
+              

-
+      
+
+      

+        
8.5.2. block

+
+        

+          

+            
Typical use:

+
+            

+              
Block ads or other unwanted content

+            

+
+            
Effect:

+
+            

+              
Requests for URLs to which this action applies are blocked,
+              i.e. the requests are trapped by Privoxy and the requested URL is never
+              retrieved, but is answered locally with a substitute page or
+              image, as determined by the handle-as-image,
+              set-image-blocker,
+              and handle-as-empty-document
+              actions.

+            

+
+            
Type:

+
+            

+              
Parameterized.

+            

+
+            
Parameter:

+
+            

+              
A block reason that should be given to the user.

+            

+
+            
Notes:

+
+            

+              
Privoxy sends a special
+              "BLOCKED" page for requests to
+              blocked pages. This page contains the block reason given as
+              parameter, a link to find out why the block action applies, and
+              a click-through to the blocked content (the latter only if the
+              force feature is available and enabled).

+
+              
A very important exception occurs if both block and handle-as-image,
+              apply to the same request: it will then be replaced by an
+              image. If set-image-blocker
+              (see below) also applies, the type of image will be determined
+              by its parameter, if not, the standard checkerboard pattern is
+              sent.

+
+              
It is important to understand this process, in order to
+              understand how Privoxy deals
+              with ads and other unwanted content. Blocking is a core
+              feature, and one upon which various other features depend.

+
+              
The filter action can perform a
+              very similar task, by "blocking"
+              banner images and other content through rewriting the relevant
+              URLs in the document's HTML source, so they don't get requested
+              in the first place. Note that this is a totally different
+              technique, and it's easy to confuse the two.

+            

+
+            
Example usage (section):

+
+            

+              
+                
+                  
-                  
-                

+                    
 {+block{No nasty stuff for you.}}
 # Block and replace with "blocked" page
  .nasty-stuff.example.com
@@ -1405,255 +1177,212 @@ class="REPLACEABLE">param,
 # Block and then ignore
  adserver.example.net/.*\.js$
 

-                    

-              

-            

-          

+                  

+            

+          

         

-        

-          

-            8.5.3.
-            change-x-forwarded-for
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Improve privacy by not forwarding the source of the request
-                  in the HTTP headers.
-                

-              

-              

-                Effect:
-              

-              

-                

-                  Deletes the "X-Forwarded-For:"
-                  HTTP header from the client request, or adds a new one.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Parameterized.
-                

-              

-              

-                Parameter:
-              

-              

-                
    
-                  
  • 
-                    
    
-                      "block" to delete the
-                      header.
-                    
    
-                  
    • 
-                  
  • 
-                    
    
-                      "add" to create the header
-                      (or append the client's IP address to an already
-                      existing one).
-                    
    
-                  
    • 
-                

-              

-              

-                Notes:
-              

-              

-                

-                  It is safe and recommended to use block.
-                

-                

-                  Forwarding the source address of the request may make sense
-                  in some multi-user setups but is also a privacy risk.
-                

-              

-              

-                Example usage:
-              

-              

-                

-                

-                
-                  
-                    
+                
+              

-
+      
+
+      

+        
8.5.3. change-x-forwarded-for

+
+        

+          

+            
Typical use:

+
+            

+              
Improve privacy by not forwarding the source of the request
+              in the HTTP headers.

+            

+
+            
Effect:

+
+            

+              
Deletes the "X-Forwarded-For:"
+              HTTP header from the client request, or adds a new one.

+            

+
+            
Type:

+
+            

+              
Parameterized.

+            

+
+            
Parameter:

+
+            

+              
    
+                
  • 
+                  
    "block" to delete the
+                  header.
    
+                
    • 
+
+                
  • 
+                  
    "add" to create the header
+                  (or append the client's IP address to an already existing
+                  one).
    
+                
    • 
+              

+            

+
+            
Notes:

+
+            

+              
It is safe and recommended to use block.

+
+              
Forwarding the source address of the request may make sense
+              in some multi-user setups but is also a privacy risk.

+            

+
+            
Example usage:

+
+            

+              
+                
+                  
-                  
-                

+                    
 +change-x-forwarded-for{block}
 

-                    

-              

-            

-          

+                  

+            

+          

         

-        

-          

-            8.5.4. client-header-filter
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Rewrite or remove single client headers.
-                

-              

-              

-                Effect:
-              

-              

-                

-                  All client headers to which this action applies are
-                  filtered on-the-fly through the specified regular
-                  expression based substitutions.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Multi-value.
-                

-              

-              

-                Parameter:
-              

-              

-                

-                  The name of a client-header filter, as defined in one of
-                  the filter files.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  Client-header filters are applied to each header on its
-                  own, not to all at once. This makes it easier to diagnose
-                  problems, but on the downside you can't write filters that
-                  only change header x if header y's value is z. You can do
-                  that by using tags though.
-                

-                

-                  Client-header filters are executed after the other header
-                  actions have finished and use their output as input.
-                

-                

-                  If the request URI gets changed, Privoxy will detect that and use the
-                  new one. This can be used to rewrite the request
-                  destination behind the client's back, for example to
-                  specify a Tor exit relay for certain requests.
-                

-                

-                  Please refer to the filter file
-                  chapter to learn which client-header filters are
-                  available by default, and how to create your own.
-                

-              

-              

-                Example usage (section):
-              

-              

-                

-                

-                
-                  
-                    
+                
+              

-
+      
+
+      

+        
8.5.4. client-header-filter

+
+        

+          

+            
Typical use:

+
+            

+              
Rewrite or remove single client headers.

+            

+
+            
Effect:

+
+            

+              
All client headers to which this action applies are filtered
+              on-the-fly through the specified regular expression based
+              substitutions.

+            

+
+            
Type:

+
+            

+              
Multi-value.

+            

+
+            
Parameter:

+
+            

+              
The name of a client-header filter, as defined in one of the
+              filter files.

+            

+
+            
Notes:

+
+            

+              
Client-header filters are applied to each header on its own,
+              not to all at once. This makes it easier to diagnose problems,
+              but on the downside you can't write filters that only change
+              header x if header y's value is z. You can do that by using
+              tags though.

+
+              
Client-header filters are executed after the other header
+              actions have finished and use their output as input.

+
+              
If the request URI gets changed, Privoxy will detect that and use the new
+              one. This can be used to rewrite the request destination behind
+              the client's back, for example to specify a Tor exit relay for
+              certain requests.

+
+              
Please refer to the filter file
+              chapter to learn which client-header filters are available
+              by default, and how to create your own.

+            

+
+            
Example usage (section):

+
+            

+              
+                
+                  
-                  
-                

+                    
 # Hide Tor exit notation in Host and Referer Headers
 {+client-header-filter{hide-tor-exit-notation}}
 /
 
 

-                    

-              

-            

-          

+                  

+            

+          

         

-        

-          

-            8.5.5. client-header-tagger
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Block requests based on their headers.
-                

-              

-              

-                Effect:
-              

-              

-                

-                  Client headers to which this action applies are filtered
-                  on-the-fly through the specified regular expression based
-                  substitutions, the result is used as tag.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Multi-value.
-                

-              

-              

-                Parameter:
-              

-              

-                

-                  The name of a client-header tagger, as defined in one of
-                  the filter files.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  Client-header taggers are applied to each header on its
-                  own, and as the header isn't modified, each tagger "sees" the original.
-                

-                

-                  Client-header taggers are the first actions that are
-                  executed and their tags can be used to control every other
-                  action.
-                

-              

-              

-                Example usage (section):
-              

-              

-                

-                

-                
-                  
-                    
+                
+              

-
+      
+
+      

+        
8.5.5. client-header-tagger

+
+        

+          

+            
Typical use:

+
+            

+              
Block requests based on their headers.

+            

+
+            
Effect:

+
+            

+              
Client headers to which this action applies are filtered
+              on-the-fly through the specified regular expression based
+              substitutions, the result is used as tag.

+            

+
+            
Type:

+
+            

+              
Multi-value.

+            

+
+            
Parameter:

+
+            

+              
The name of a client-header tagger, as defined in one of the
+              filter files.

+            

+
+            
Notes:

+
+            

+              
Client-header taggers are applied to each header on its own,
+              and as the header isn't modified, each tagger "sees" the original.

+
+              
Client-header taggers are the first actions that are
+              executed and their tags can be used to control every other
+              action.

+            

+
+            
Example usage (section):

+
+            

+              
+                
+                  
-                  
-                

+                    
 # Tag every request with the User-Agent header
 {+client-header-tagger{user-agent}}
 /
@@ -1678,16 +1407,14 @@ TAG:^User-Agent: Ubuntu APT-HTTP/
 TAG:^User-Agent: MPlayer/
 
 

-                    

+                  

 
-                

-                

-                
-                  
-                    
-                  
-                

-
+              
+                
+                  
-                  
-                

+                    
 # Tag all requests with the Range header set
 {+client-header-tagger{range-requests}}
 /
@@ -1701,326 +1428,276 @@ TAG:^User-Agent: MPlayer/
 {-filter -deanimate-gifs}
 TAG:^RANGE-REQUEST$
 
-

-                    

-              
-            
-          
-        
-        

-          

-            8.5.6.
-            content-type-overwrite
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Stop useless download menus from popping up, or change the
-                  browser's rendering mode
-                

-              

-              

-                Effect:
-              

-              

-                

-                  Replaces the "Content-Type:"
-                  HTTP server header.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Parameterized.
-                

-              

-              

-                Parameter:
-              

-              

-                

-                  Any string.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  The "Content-Type:" HTTP server
-                  header is used by the browser to decide what to do with the
-                  document. The value of this header can cause the browser to
-                  open a download menu instead of displaying the document by
-                  itself, even if the document's format is supported by the
-                  browser.
-                

-                

-                  The declared content type can also affect which rendering
-                  mode the browser chooses. If XHTML is delivered as "text/html", many browsers treat it as
-                  yet another broken HTML document. If it is send as "application/xml", browsers with XHTML
-                  support will only display it, if the syntax is correct.
-                

-                

-                  If you see a web site that proudly uses XHTML buttons, but
-                  sets "Content-Type: text/html",
-                  you can use Privoxy to
-                  overwrite it with "application/xml" and validate the web
-                  master's claim inside your XHTML-supporting browser. If the
-                  syntax is incorrect, the browser will complain loudly.
-                

-                

-                  You can also go the opposite direction: if your browser
-                  prints error messages instead of rendering a document
-                  falsely declared as XHTML, you can overwrite the content
-                  type with "text/html" and have
-                  it rendered as broken HTML document.
-                

-                

-                  By default content-type-overwrite
-                  only replaces "Content-Type:"
-                  headers that look like some kind of text. If you want to
-                  overwrite it unconditionally, you have to combine it with
-                  force-text-mode.
-                  This limitation exists for a reason, think twice before
-                  circumventing it.
-                

-                

-                  Most of the time it's easier to replace this action with a
-                  custom server-header
-                  filter. It allows you to activate it for every
-                  document of a certain site and it will still only replace
-                  the content types you aimed at.
-                

-                

-                  Of course you can apply content-type-overwrite to a whole site and
-                  then make URL based exceptions, but it's a lot more work to
-                  get the same precision.
-                

-              

-              

-                Example usage (sections):
-              

-              

-                

-                

-                
-                  
-                    
+                
+              

-
-# Check if www.example.net/ really uses valid XHTML
-{ +content-type-overwrite{application/xml} }
-www.example.net/
+

+                  

+            

+          

+        

+      

+
+      

+        
8.5.6. content-type-overwrite

+
+        

+          

+            
Typical use:

+
+            

+              
Stop useless download menus from popping up, or change the
+              browser's rendering mode

+            

+
+            
Effect:

+
+            

+              
Replaces the "Content-Type:" HTTP
+              server header.

+            

+
+            
Type:

+
+            

+              
Parameterized.

+            

+
+            
Parameter:

+
+            

+              
Any string.

+            

+
+            
Notes:

+
+            

+              
The "Content-Type:" HTTP server
+              header is used by the browser to decide what to do with the
+              document. The value of this header can cause the browser to
+              open a download menu instead of displaying the document by
+              itself, even if the document's format is supported by the
+              browser.

+
+              
The declared content type can also affect which rendering
+              mode the browser chooses. If XHTML is delivered as "text/html", many browsers treat it as yet
+              another broken HTML document. If it is send as "application/xml", browsers with XHTML support
+              will only display it, if the syntax is correct.

+
+              
If you see a web site that proudly uses XHTML buttons, but
+              sets "Content-Type: text/html", you
+              can use Privoxy to overwrite
+              it with "application/xml" and
+              validate the web master's claim inside your XHTML-supporting
+              browser. If the syntax is incorrect, the browser will complain
+              loudly.

+
+              
You can also go the opposite direction: if your browser
+              prints error messages instead of rendering a document falsely
+              declared as XHTML, you can overwrite the content type with
+              "text/html" and have it rendered as
+              broken HTML document.

+
+              
By default content-type-overwrite
+              only replaces "Content-Type:"
+              headers that look like some kind of text. If you want to
+              overwrite it unconditionally, you have to combine it with
+              force-text-mode.
+              This limitation exists for a reason, think twice before
+              circumventing it.

+
+              
Most of the time it's easier to replace this action with a
+              custom server-header
+              filter. It allows you to activate it for every
+              document of a certain site and it will still only replace the
+              content types you aimed at.

+
+              
Of course you can apply content-type-overwrite to a whole site and then
+              make URL based exceptions, but it's a lot more work to get the
+              same precision.

+            

+
+            
Example usage (sections):

+
+            

+              
+                
+                  
+                
+              

+                    
+# Check if www.example.net/ really uses valid XHTML
+{ +content-type-overwrite{application/xml} }
+www.example.net/
+
+# but leave the content type unmodified if the URL looks like a style sheet
+{-content-type-overwrite}
+www.example.net/.*\.css$
+www.example.net/.*style
+

+                  

+            

+          

+        

+      

+
+      

+        
8.5.7. crunch-client-header

+
+        

+          

+            
Typical use:

+
+            

+              
Remove a client header Privoxy has no dedicated action for.

+            

+
+            
Effect:

+
+            

+              
Deletes every header sent by the client that contains the
+              string the user supplied as parameter.

+            

+
+            
Type:

+
+            

+              
Parameterized.

+            

+
+            
Parameter:

+
+            

+              
Any string.

+            

+
+            
Notes:

+
+            

+              
This action allows you to block client headers for which no
+              dedicated Privoxy action
+              exists. Privoxy will remove
+              every client header that contains the string you supplied as
+              parameter.

+
+              
Regular expressions are not supported and you can't use this
+              action to block different headers in the same request, unless
+              they contain the same string.

+
+              
crunch-client-header is only meant
+              for quick tests. If you have to block several different
+              headers, or only want to modify parts of them, you should use a
+              client-header
+              filter.

+
+              

+                
+                  
+                    
+                  
+
+                  
+                    
+                  
+                
Warning

+                      
Don't block any header without understanding the
+                      consequences.

+                    

+              

+            

+
+            
Example usage (section):

+
+            

+              
+                
+                  
+                
+              

+                    
+# Block the non-existent "Privacy-Violation:" client header
+{ +crunch-client-header{Privacy-Violation:} }
+/
+
+

+                  

+            

+          

+        

+      

+
+      

+        
8.5.8. crunch-if-none-match

+
+        

+          

+            
Typical use:

+
+            

+              
Prevent yet another way to track the user's steps between
+              sessions.

+            

+
+            
Effect:

+
+            

+              
Deletes the "If-None-Match:" HTTP
+              client header.

+            

+
+            
Type:

+
+            

+              
Boolean.

+            

+
+            
Parameter:

+
+            

+              
N/A

+            

+
+            
Notes:

 
-# but leave the content type unmodified if the URL looks like a style sheet
-{-content-type-overwrite}
-www.example.net/.*\.css$
-www.example.net/.*style
-

-                    

-              

-            

-          

-        

-        

-          

-            8.5.7. crunch-client-header
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Remove a client header Privoxy has no dedicated action for.
-                

-              

-              

-                Effect:
-              

-              

-                

-                  Deletes every header sent by the client that contains the
-                  string the user supplied as parameter.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Parameterized.
-                

-              

-              

-                Parameter:
-              

-              

-                

-                  Any string.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  This action allows you to block client headers for which no
-                  dedicated Privoxy action
-                  exists. Privoxy will
-                  remove every client header that contains the string you
-                  supplied as parameter.
-                

-                

-                  Regular expressions are not supported and you can't use this
-                  action to block different headers in the same request,
-                  unless they contain the same string.
-                

-                

-                  crunch-client-header is only meant
-                  for quick tests. If you have to block several different
-                  headers, or only want to modify parts of them, you should
-                  use a client-header
-                  filter.
-                

-                

-                  
-                    
-                      
-                    
-                    
-                      
-                    
-                  

-                        Warning
-                      

-                        

-                          Don't block any header without understanding the
-                          consequences.
-                        

-                      

-                

-              

-              

-                Example usage (section):
-              

-              

-                

-                

-                
-                  
-                    
-                  
-                

-
-# Block the non-existent "Privacy-Violation:" client header
-{ +crunch-client-header{Privacy-Violation:} }
-/
+            

+              
Removing the "If-None-Match:"
+              HTTP client header is useful for filter testing, where you want
+              to force a real reload instead of getting status code
+              "304" which would cause the browser
+              to use a cached copy of the page.

 
-

-                    

-              

-            

-          

-        

-        

-          

-            8.5.8. crunch-if-none-match
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Prevent yet another way to track the user's steps between
-                  sessions.
-                

-              

-              

-                Effect:
-              

-              

-                

-                  Deletes the "If-None-Match:"
-                  HTTP client header.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Boolean.
-                

-              

-              

-                Parameter:
-              

-              

-                

-                  N/A
-                

-              

-              

-                Notes:
-              

-              

-                

-                  Removing the "If-None-Match:"
-                  HTTP client header is useful for filter testing, where you
-                  want to force a real reload instead of getting status code
-                  "304" which would cause the
-                  browser to use a cached copy of the page.
-                

-                

-                  It is also useful to make sure the header isn't used as a
-                  cookie replacement (unlikely but possible).
-                

-                

-                  Blocking the "If-None-Match:"
-                  header shouldn't cause any caching problems, as long as the
-                  "If-Modified-Since:" header
-                  isn't blocked or missing as well.
-                

-                

-                  It is recommended to use this action together with hide-if-modified-since
-                  and overwrite-last-modified.
-                

-              

-              

-                Example usage (section):
-              

-              

-                

-                

-                
-                  
-                    
+                
+              

-
+              
It is also useful to make sure the header isn't used as a
+              cookie replacement (unlikely but possible).

+
+              
Blocking the "If-None-Match:"
+              header shouldn't cause any caching problems, as long as the
+              "If-Modified-Since:" header isn't
+              blocked or missing as well.

+
+              
It is recommended to use this action together with
+              hide-if-modified-since
+              and overwrite-last-modified.

+            
+
+            
Example usage (section):

+
+            

+              
+                
+                  
-                  
-                

+                    
 # Let the browser revalidate cached documents but don't
 # allow the server to use the revalidation headers for user tracking.
 {+hide-if-modified-since{-60} \
@@ -2028,1467 +1705,1285 @@ www.example.net/.*style
  +crunch-if-none-match}
 /
 

-                    

-              

-            
-          
+                  

+            

+          

         

-        

-          

-            8.5.9.
-            crunch-incoming-cookies
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Prevent the web server from setting HTTP cookies on your
-                  system
-                

-              

-              

-                Effect:
-              

-              

-                

-                  Deletes any "Set-Cookie:" HTTP
-                  headers from server replies.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Boolean.
-                

-              

-              

-                Parameter:
-              

-              

-                

-                  N/A
-                

-              

-              

-                Notes:
-              

-              

-                

-                  This action is only concerned with incoming HTTP
-                  cookies. For outgoing HTTP cookies, use crunch-outgoing-cookies.
-                  Use both to disable HTTP cookies
-                  completely.
-                

-                

-                  It makes no
-                  sense at all to use this action in conjunction
-                  with the session-cookies-only
-                  action, since it would prevent the session cookies from
-                  being set. See also filter-content-cookies.
-                

-              

-              

-                Example usage:
-              

-              

-                

-                

-                
-                  
-                    

-
+      
+
+      

+        
8.5.9. crunch-incoming-cookies

+
+        

+          

+            
Typical use:

+
+            

+              
Prevent the web server from setting HTTP cookies on your
+              system

+            

+
+            
Effect:

+
+            

+              
Deletes any "Set-Cookie:" HTTP
+              headers from server replies.

+            

+
+            
Type:

+
+            

+              
Boolean.

+            

+
+            
Parameter:

+
+            

+              
N/A

+            

+
+            
Notes:

+
+            

+              
This action is only concerned with incoming HTTP
+              cookies. For outgoing HTTP cookies, use crunch-outgoing-cookies.
+              Use both
+              to disable HTTP cookies completely.

+
+              
It makes no sense
+              at all to use this action in conjunction with the
+              session-cookies-only
+              action, since it would prevent the session cookies from being
+              set. See also filter-content-cookies.

+            

+
+            
Example usage:

+
+            

+              
+                
+                  
+                
+              

+                    
 +crunch-incoming-cookies
 

+                  

+            

+          

+        

+      

+
+      

+        
8.5.10. crunch-server-header

+
+        

+          

+            
Typical use:

+
+            

+              
Remove a server header Privoxy has no dedicated action for.

+            

+
+            
Effect:

+
+            

+              
Deletes every header sent by the server that contains the
+              string the user supplied as parameter.

+            

+
+            
Type:

+
+            

+              
Parameterized.

+            

+
+            
Parameter:

+
+            

+              
Any string.

+            

+
+            
Notes:

+
+            

+              
This action allows you to block server headers for which no
+              dedicated Privoxy action
+              exists. Privoxy will remove
+              every server header that contains the string you supplied as
+              parameter.

+
+              
Regular expressions are not supported and you can't use this
+              action to block different headers in the same request, unless
+              they contain the same string.

+
+              
crunch-server-header is only meant
+              for quick tests. If you have to block several different
+              headers, or only want to modify parts of them, you should use a
+              custom server-header
+              filter.

+
+              

+                
+                  
+                    
+                  
+
+                  
+                    
Warning

+                      
Don't block any header without understanding the
+                      consequences.

                     		
                   

                 

-              

-            

-          

-        

-        

-          

-            8.5.10. crunch-server-header
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Remove a server header Privoxy has no dedicated action for.
-                

-              

-              

-                Effect:
-              

-              

-                

-                  Deletes every header sent by the server that contains the
-                  string the user supplied as parameter.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Parameterized.
-                

-              

-              

-                Parameter:
-              

-              

-                

-                  Any string.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  This action allows you to block server headers for which no
-                  dedicated Privoxy action
-                  exists. Privoxy will
-                  remove every server header that contains the string you
-                  supplied as parameter.
-                

-                

-                  Regular expressions are not supported and you can't use this
-                  action to block different headers in the same request,
-                  unless they contain the same string.
-                

-                

-                  crunch-server-header is only meant
-                  for quick tests. If you have to block several different
-                  headers, or only want to modify parts of them, you should
-                  use a custom server-header
-                  filter.
-                

-                

-                  
-                    
-                      
-                    
-                    
-                      
-                    
-                  

-                        Warning
-                      

-                        

-                          Don't block any header without understanding the
-                          consequences.
-                        

-                      

-                

-              

-              

-                Example usage (section):
-              

-              

-                

-                

-                
-                  
-                    
+                
+              

-
+              
+            
+
+            
Example usage (section):

+
+            

+              
+                
+                  
-                  
-                

+                    
 # Crunch server headers that try to prevent caching
 { +crunch-server-header{no-cache} }
 /
 

-                    

-              

-            
-          
+                  

+            

+          

         

-        

-          

-            8.5.11.
-            crunch-outgoing-cookies
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Prevent the web server from reading any HTTP cookies from
-                  your system
-                

-              

-              

-                Effect:
-              

-              

-                

-                  Deletes any "Cookie:" HTTP
-                  headers from client requests.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Boolean.
-                

-              

-              

-                Parameter:
-              

-              

-                

-                  N/A
-                

-              

-              

-                Notes:
-              

-              

-                

-                  This action is only concerned with outgoing HTTP
-                  cookies. For incoming HTTP cookies, use crunch-incoming-cookies.
-                  Use both to disable HTTP cookies
-                  completely.
-                

-                

-                  It makes no
-                  sense at all to use this action in conjunction
-                  with the session-cookies-only
-                  action, since it would prevent the session cookies from
-                  being read.
-                

-              

-              

-                Example usage:
-              

-              

-                

-                

-                
-                  
-                    
+                
+              

-
+      
+
+      

+        
8.5.11. crunch-outgoing-cookies

+
+        

+          

+            
Typical use:

+
+            

+              
Prevent the web server from reading any HTTP cookies from
+              your system

+            

+
+            
Effect:

+
+            

+              
Deletes any "Cookie:" HTTP
+              headers from client requests.

+            

+
+            
Type:

+
+            

+              
Boolean.

+            

+
+            
Parameter:

+
+            

+              
N/A

+            

+
+            
Notes:

+
+            

+              
This action is only concerned with outgoing HTTP
+              cookies. For incoming HTTP cookies, use crunch-incoming-cookies.
+              Use both
+              to disable HTTP cookies completely.

+
+              
It makes no sense
+              at all to use this action in conjunction with the
+              session-cookies-only
+              action, since it would prevent the session cookies from being
+              read.

+            

+
+            
Example usage:

+
+            

+              
+                
+                  
-                  
-                

+                    
 +crunch-outgoing-cookies
 

-                    

-              

-            

-          

+                  

+            

+          

+        

+      

+
+      

+        
8.5.12. deanimate-gifs

+
+        

+          

+            
Typical use:

+
+            

+              
Stop those annoying, distracting animated GIF images.

+            

+
+            
Effect:

+
+            

+              
De-animate GIF animations, i.e. reduce them to their first
+              or last image.

+            

+
+            
Type:

+
+            

+              
Parameterized.

+            

+
+            
Parameter:

+
+            

+              
"last" or "first"

+            

+
+            
Notes:

+
+            

+              
This will also shrink the images considerably (in bytes, not
+              pixels!). If the option "first" is
+              given, the first frame of the animation is used as the
+              replacement. If "last" is given, the
+              last frame of the animation is used instead, which probably
+              makes more sense for most banner animations, but also has the
+              risk of not showing the entire last frame (if it is only a
+              delta to an earlier frame).

+
+              
You can safely use this action with patterns that will also
+              match non-GIF objects, because no attempt will be made at
+              anything that doesn't look like a GIF.

+            

+
+            
Example usage:

+
+            

+              
+                
+                  
+                
+              

+                    
++deanimate-gifs{last}
+

+                  

+            

+          

+        

+      

+
+      

+        
8.5.13. downgrade-http-version

+
+        

+          

+            
Typical use:

+
+            

+              
Work around (very rare) problems with HTTP/1.1

+            

+
+            
Effect:

+
+            

+              
Downgrades HTTP/1.1 client requests and server replies to
+              HTTP/1.0.

+            

+
+            
Type:

+
+            

+              
Boolean.

+            

+
+            
Parameter:

+
+            

+              
N/A

+            

+
+            
Notes:

+
+            

+              
This is a left-over from the time when Privoxy didn't support important HTTP/1.1
+              features well. It is left here for the unlikely case that you
+              experience HTTP/1.1-related problems with some server out
+              there.

+
+              
Note that enabling this action is only a workaround. It
+              should not be enabled for sites that work without it. While it
+              shouldn't break any pages, it has an (usually negative)
+              performance impact.

+
+              
If you come across a site where enabling this action helps,
+              please report it, so the cause of the problem can be analyzed.
+              If the problem turns out to be caused by a bug in Privoxy it should be fixed so the
+              following release works without the work around.

+            

+
+            
Example usage (section):

+
+            

+              
+                
+                  
+                
+              

+                    
+{+downgrade-http-version}
+problem-host.example.com
+

+                  

+            

+          

         

-        

-          

-            8.5.12. deanimate-gifs
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Stop those annoying, distracting animated GIF images.
-                

-              

-              

-                Effect:
-              

-              

-                

-                  De-animate GIF animations, i.e. reduce them to their first
-                  or last image.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Parameterized.
-                

-              

-              

-                Parameter:
-              

-              

-                

-                  "last" or "first"
-                

-              

-              

-                Notes:
-              

-              

-                

-                  This will also shrink the images considerably (in bytes,
-                  not pixels!). If the option "first" is given, the first frame of the
-                  animation is used as the replacement. If "last" is given, the last frame of the
-                  animation is used instead, which probably makes more sense
-                  for most banner animations, but also has the risk of not
-                  showing the entire last frame (if it is only a delta to an
-                  earlier frame).
-                

-                

-                  You can safely use this action with patterns that will also
-                  match non-GIF objects, because no attempt will be made at
-                  anything that doesn't look like a GIF.
-                

-              

-              

-                Example usage:
-              

-              

-                

-                

-                
+      
+
+      

+        
8.5.14. external-filter

+
+        

+          

+            
Typical use:

+
+            

+              
Modify content using a programming language of your
+              choice.

+            

+
+            
Effect:

+
+            

+              
All instances of text-based type, most notably HTML and
+              JavaScript, to which this action applies, can be filtered
+              on-the-fly through the specified external filter. By default
+              plain text documents are exempted from filtering, because web
+              servers often use the text/plain MIME
+              type for all files whose type they don't know.)

+            

+
+            
Type:

+
+            

+              
Multi-value.

+            

+
+            
Parameter:

+
+            

+              
The name of an external content filter, as defined in the
+              filter file. External filters
+              can be defined in one or more files as defined by the
+              filterfile option in the
+              config file.

+
+              
When used in its negative form, and without parameters,
+              all
+              filtering with external filters is completely disabled.

+            

+
+            
Notes:

+
+            

+              
External filters are scripts or programs that can modify the
+              content in case common filters aren't powerful
+              enough. With the exception that this action doesn't use
+              pcrs-based filters, the notes in the filter
+              section apply.

+
+              

+                

-                    
+                    
-                

                   

-
-+deanimate-gifs{last}
-

-                    		Warning
                   

-              

-            

-          

-        

-        

-          

-            8.5.13.
-            downgrade-http-version
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Work around (very rare) problems with HTTP/1.1
-                

-              

-              

-                Effect:
-              

-              

-                

-                  Downgrades HTTP/1.1 client requests and server replies to
-                  HTTP/1.0.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Boolean.
-                

-              

-              

-                Parameter:
-              

-              

-                

-                  N/A
-                

-              

-              

-                Notes:
-              

-              

-                

-                  This is a left-over from the time when Privoxy didn't support important
-                  HTTP/1.1 features well. It is left here for the unlikely
-                  case that you experience HTTP/1.1-related problems with
-                  some server out there.
-                

-                

-                  Note that enabling this action is only a workaround. It
-                  should not be enabled for sites that work without it. While
-                  it shouldn't break any pages, it has an (usually negative)
-                  performance impact.
-                

-                

-                  If you come across a site where enabling this action helps,
-                  please report it, so the cause of the problem can be
-                  analyzed. If the problem turns out to be caused by a bug in
-                  Privoxy it should be fixed
-                  so the following release works without the work around.
-                

-              

-              

-                Example usage (section):
-              

-              

-                

-                

-                
+
                   
-                    

-
-{+downgrade-http-version}
-problem-host.example.com
-

+                    		
+                      
Currently external filters are executed with
+                      Privoxy's privileges.
+                      Only use external filters you understand and trust.

                     		
                   

                 

-              

-            

-          

-        

-        

-          

-            8.5.14. external-filter
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Modify content using a programming language of your choice.
-                

-              

-              

-                Effect:
-              

-              

-                

-                  All instances of text-based type, most notably HTML and
-                  JavaScript, to which this action applies, can be filtered
-                  on-the-fly through the specified external filter. By
-                  default plain text documents are exempted from filtering,
-                  because web servers often use the text/plain MIME type for all files whose
-                  type they don't know.)
-                

-              

-              

-                Type:
-              

-              

-                

-                  Multi-value.
-                

-              

-              

-                Parameter:
-              

-              

-                

-                  The name of an external content filter, as defined in the
-                  filter file. External
-                  filters can be defined in one or more files as defined by
-                  the filterfile option in the
-                  config file.
-                

-                

-                  When used in its negative form, and without parameters,
-                  all
-                  filtering with external filters is completely disabled.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  External filters are scripts or programs that can modify
-                  the content in case common filters aren't powerful
-                  enough. With the exception that this action doesn't use
-                  pcrs-based filters, the notes in the filter section
-                  apply.
-                

-                

-                  
-                    
-                      
-                    
-                    
-                      
-                    
-                  

-                        Warning
-                      

-                        

-                          Currently external filters are executed with Privoxy's privileges.
-                          Only use external filters you understand and trust.
-                        

-                      

-                

-                

-                  This feature is experimental, the syntax
-                  may change in the future.
-                

-              

-              

-                Example usage:
-              

-              

-                

-                

-                
-                  
-                    
+                
+              

-
+              
+
+              
This feature is experimental, the syntax may
+              change in the future.

+            
+
+            
Example usage:

+
+            

+              
+                
+                  
-                  
-                

+                    
 +external-filter{fancy-filter}
 

-                    

-              

-            
-          
+                  

+            

+          

         

-        

-          

-            8.5.15. fast-redirects
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Fool some click-tracking scripts and speed up indirect
-                  links.
-                

-              

-              

-                Effect:
-              

-              

-                

-                  Detects redirection URLs and redirects the browser without
-                  contacting the redirection server first.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Parameterized.
-                

-              

-              

-                Parameter:
-              

-              

-                
    
-                  
  • 
-                    
    
-                      "simple-check" to just
-                      search for the string "http://" to detect redirection URLs.
-                    
    
-                  
    • 
-                  
  • 
-                    
    
-                      "check-decoded-url" to
-                      decode URLs (if necessary) before searching for
-                      redirection URLs.
-                    
    
-                  
    • 
-                

-              

-              

-                Notes:
-              

-              

-                

-                  Many sites, like yahoo.com, don't just link to other sites.
-                  Instead, they will link to some script on their own
-                  servers, giving the destination as a parameter, which will
-                  then redirect you to the final target. URLs resulting from
-                  this scheme typically look like: "http://www.example.org/click-tracker.cgi?target=http%3a//www.example.net/".
-                

-                

-                  Sometimes, there are even multiple consecutive redirects
-                  encoded in the URL. These redirections via scripts make
-                  your web browsing more traceable, since the server from
-                  which you follow such a link can see where you go to. Apart
-                  from that, valuable bandwidth and time is wasted, while
-                  your browser asks the server for one redirect after the
-                  other. Plus, it feeds the advertisers.
-                

-                

-                  This feature is currently not very smart and is scheduled
-                  for improvement. If it is enabled by default, you will have
-                  to create some exceptions to this action. It can lead to
-                  failures in several ways:
-                

-                

-                  Not every URLs with other URLs as parameters is evil. Some
-                  sites offer a real service that requires this information
-                  to work. For example a validation service needs to know,
-                  which document to validate. fast-redirects assumes that every URL
-                  parameter that looks like another URL is a redirection
-                  target, and will always redirect to the last one. Most of
-                  the time the assumption is correct, but if it isn't, the
-                  user gets redirected anyway.
-                

-                

-                  Another failure occurs if the URL contains other parameters
-                  after the URL parameter. The URL: "http://www.example.org/?redirect=http%3a//www.example.net/&foo=bar".
-                  contains the redirection URL "http://www.example.net/", followed by
-                  another parameter. fast-redirects
-                  doesn't know that and will cause a redirect to "http://www.example.net/&foo=bar".
-                  Depending on the target server configuration, the parameter
-                  will be silently ignored or lead to a "page not found" error. You can prevent this
-                  problem by first using the redirect action to
-                  remove the last part of the URL, but it requires a little
-                  effort.
-                

-                

-                  To detect a redirection URL, fast-redirects only looks for the string
-                  "http://", either in plain text
-                  (invalid but often used) or encoded as "http%3a//". Some sites use their own URL
-                  encoding scheme, encrypt the address of the target server
-                  or replace it with a database id. In theses cases fast-redirects is fooled and the
-                  request reaches the redirection server where it probably
-                  gets logged.
-                

-              

-              

-                Example usage:
-              

-              

-                

-                

-                
-                  
-                    
+                
+              

-
+      
+
+      

+        
8.5.15. fast-redirects

+
+        

+          

+            
Typical use:

+
+            

+              
Fool some click-tracking scripts and speed up indirect
+              links.

+            

+
+            
Effect:

+
+            

+              
Detects redirection URLs and redirects the browser without
+              contacting the redirection server first.

+            

+
+            
Type:

+
+            

+              
Parameterized.

+            

+
+            
Parameter:

+
+            

+              
    
+                
  • 
+                  
    "simple-check" to just search
+                  for the string "http://" to
+                  detect redirection URLs.
    
+                
    • 
+
+                
  • 
+                  
    "check-decoded-url" to decode
+                  URLs (if necessary) before searching for redirection
+                  URLs.
    
+                
    • 
+              

+            

+
+            
Notes:

+
+            

+              
Many sites, like yahoo.com, don't just link to other sites.
+              Instead, they will link to some script on their own servers,
+              giving the destination as a parameter, which will then redirect
+              you to the final target. URLs resulting from this scheme
+              typically look like: "http://www.example.org/click-tracker.cgi?target=http%3a//www.example.net/".

+
+              
Sometimes, there are even multiple consecutive redirects
+              encoded in the URL. These redirections via scripts make your
+              web browsing more traceable, since the server from which you
+              follow such a link can see where you go to. Apart from that,
+              valuable bandwidth and time is wasted, while your browser asks
+              the server for one redirect after the other. Plus, it feeds the
+              advertisers.

+
+              
This feature is currently not very smart and is scheduled
+              for improvement. If it is enabled by default, you will have to
+              create some exceptions to this action. It can lead to failures
+              in several ways:

+
+              
Not every URLs with other URLs as parameters is evil. Some
+              sites offer a real service that requires this information to
+              work. For example a validation service needs to know, which
+              document to validate. fast-redirects
+              assumes that every URL parameter that looks like another URL is
+              a redirection target, and will always redirect to the last one.
+              Most of the time the assumption is correct, but if it isn't,
+              the user gets redirected anyway.

+
+              
Another failure occurs if the URL contains other parameters
+              after the URL parameter. The URL: "http://www.example.org/?redirect=http%3a//www.example.net/&foo=bar".
+              contains the redirection URL "http://www.example.net/", followed by another
+              parameter. fast-redirects doesn't know
+              that and will cause a redirect to "http://www.example.net/&foo=bar". Depending
+              on the target server configuration, the parameter will be
+              silently ignored or lead to a "page not
+              found" error. You can prevent this problem by first
+              using the redirect action to remove
+              the last part of the URL, but it requires a little effort.

+
+              
To detect a redirection URL, fast-redirects only looks for the string
+              "http://", either in plain text
+              (invalid but often used) or encoded as "http%3a//". Some sites use their own URL
+              encoding scheme, encrypt the address of the target server or
+              replace it with a database id. In theses cases fast-redirects is fooled and the request reaches
+              the redirection server where it probably gets logged.

+            

+
+            
Example usage:

+
+            

+              
+                
+                  
-                  
-                

+                    
  { +fast-redirects{simple-check} }
    one.example.com
 
  { +fast-redirects{check-decoded-url} }
    another.example.com/testing
 

-                    

-              

-            

-          

+                  

+            

+          

         

-        

-          

-            8.5.16. filter
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Get rid of HTML and JavaScript annoyances, banner
-                  advertisements (by size), do fun text replacements, add
-                  personalized effects, etc.
-                

-              

-              

-                Effect:
-              

-              

-                

-                  All instances of text-based type, most notably HTML and
-                  JavaScript, to which this action applies, can be filtered
-                  on-the-fly through the specified regular expression based
-                  substitutions. (Note: as of version 3.0.3 plain text
-                  documents are exempted from filtering, because web servers
-                  often use the text/plain MIME type
-                  for all files whose type they don't know.)
-                

-              

-              

-                Type:
-              

-              

-                

-                  Multi-value.
-                

-              

-              

-                Parameter:
-              

-              

-                

-                  The name of a content filter, as defined in the filter file. Filters can be defined
-                  in one or more files as defined by the filterfile option in the
-                  config file. default.filter is the collection of filters
-                  supplied by the developers. Locally defined filters should
-                  go in their own file, such as user.filter.
-                

-                

-                  When used in its negative form, and without parameters,
-                  all
-                  filtering is completely disabled.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  For your convenience, there are a number of pre-defined
-                  filters available in the distribution filter file that you
-                  can use. See the examples below for a list.
-                

-                

-                  Filtering requires buffering the page content, which may
-                  appear to slow down page rendering since nothing is
-                  displayed until all content has passed the filters. (The
-                  total time until the page is completely rendered doesn't
-                  change much, but it may be perceived as slower since the
-                  page is not incrementally displayed.) This effect will be
-                  more noticeable on slower connections.
-                

-                

-                  "Rolling your own" filters
-                  requires a knowledge of "Regular Expressions"
-                  and "HTML". This is very
-                  powerful feature, and potentially very intrusive. Filters
-                  should be used with caution, and where an equivalent "action" is not available.
-                

-                

-                  The amount of data that can be filtered is limited to the
-                  buffer-limit option in
-                  the main config file. The default
-                  is 4096 KB (4 Megs). Once this limit is exceeded, the
-                  buffered data, and all pending data, is passed through
-                  unfiltered.
-                

-                

-                  Inappropriate MIME types, such as zipped files, are not
-                  filtered at all. (Again, only text-based types except plain
-                  text). Encrypted SSL data (from HTTPS servers) cannot be
-                  filtered either, since this would violate the integrity of
-                  the secure transaction. In some situations it might be
-                  necessary to protect certain text, like source code, from
-                  filtering by defining appropriate -filter exceptions.
-                

-                

-                  Compressed content can't be filtered either, but if Privoxy is compiled with zlib
-                  support and a supported compression algorithm is used (gzip
-                  or deflate), Privoxy can
-                  first decompress the content and then filter it.
-                

-                

-                  If you use a Privoxy
-                  version without zlib support, but want filtering to work on
-                  as much documents as possible, even those that would
-                  normally be sent compressed, you must use the prevent-compression
-                  action in conjunction with filter.
-                

-                

-                  Content filtering can achieve some of the same effects as
-                  the block action, i.e. it
-                  can be used to block ads and banners. But the mechanism
-                  works quite differently. One effective use, is to block ad
-                  banners based on their size (see below), since many of
-                  these seem to be somewhat standardized.
-                

-                

-                  Feedback with suggestions for
-                  new or improved filters is particularly welcome!
-                

-                

-                  The below list has only the names and a one-line
-                  description of each predefined filter. There are more verbose
-                  explanations of what these filters do in the filter file chapter.
-                

-              

-              

-                Example usage (with filters from the distribution default.filter file). See the Predefined Filters
-                section for more explanation on each:
-              

-              

-                

-                  
-                

-                
-                  
-                    
+                
+              

-
+      
+
+      

+        
8.5.16.
+        filter

+
+        

+          

+            
Typical use:

+
+            

+              
Get rid of HTML and JavaScript annoyances, banner
+              advertisements (by size), do fun text replacements, add
+              personalized effects, etc.

+            

+
+            
Effect:

+
+            

+              
All instances of text-based type, most notably HTML and
+              JavaScript, to which this action applies, can be filtered
+              on-the-fly through the specified regular expression based
+              substitutions. (Note: as of version 3.0.3 plain text documents
+              are exempted from filtering, because web servers often use the
+              text/plain MIME type for all files
+              whose type they don't know.)

+            

+
+            
Type:

+
+            

+              
Multi-value.

+            

+
+            
Parameter:

+
+            

+              
The name of a content filter, as defined in the filter file. Filters can be defined in
+              one or more files as defined by the filterfile
+              option in the config file. default.filter is the collection of filters
+              supplied by the developers. Locally defined filters should go
+              in their own file, such as user.filter.

+
+              
When used in its negative form, and without parameters,
+              all
+              filtering is completely disabled.

+            

+
+            
Notes:

+
+            

+              
For your convenience, there are a number of pre-defined
+              filters available in the distribution filter file that you can
+              use. See the examples below for a list.

+
+              
Filtering requires buffering the page content, which may
+              appear to slow down page rendering since nothing is displayed
+              until all content has passed the filters. (The total time until
+              the page is completely rendered doesn't change much, but it may
+              be perceived as slower since the page is not incrementally
+              displayed.) This effect will be more noticeable on slower
+              connections.

+
+              
"Rolling your own" filters
+              requires a knowledge of "Regular Expressions" and
+              "HTML". This is very
+              powerful feature, and potentially very intrusive. Filters
+              should be used with caution, and where an equivalent
+              "action" is not available.

+
+              
The amount of data that can be filtered is limited to the
+              buffer-limit option in the
+              main config file. The default is 4096
+              KB (4 Megs). Once this limit is exceeded, the buffered data,
+              and all pending data, is passed through unfiltered.

+
+              
Inappropriate MIME types, such as zipped files, are not
+              filtered at all. (Again, only text-based types except plain
+              text). Encrypted SSL data (from HTTPS servers) cannot be
+              filtered either, since this would violate the integrity of the
+              secure transaction. In some situations it might be necessary to
+              protect certain text, like source code, from filtering by
+              defining appropriate -filter
+              exceptions.

+
+              
Compressed content can't be filtered either, but if
+              Privoxy is compiled with zlib
+              support and a supported compression algorithm is used (gzip or
+              deflate), Privoxy can first
+              decompress the content and then filter it.

+
+              
If you use a Privoxy
+              version without zlib support, but want filtering to work on as
+              much documents as possible, even those that would normally be
+              sent compressed, you must use the prevent-compression
+              action in conjunction with filter.

+
+              
Content filtering can achieve some of the same effects as
+              the block action, i.e. it can be
+              used to block ads and banners. But the mechanism works quite
+              differently. One effective use, is to block ad banners based on
+              their size (see below), since many of these seem to be somewhat
+              standardized.

+
+              
Feedback with suggestions for new
+              or improved filters is particularly welcome!

+
+              
The below list has only the names and a one-line description
+              of each predefined filter. There are more verbose
+              explanations of what these filters do in the filter file chapter.

+            

+
+            
Example usage (with filters from the distribution default.filter file). See the Predefined Filters
+            section for more explanation on each:

+
+            

+              

+
+              
+                
+                  
-                  
-                

+                    
 +filter{js-annoyances}       # Get rid of particularly annoying JavaScript abuse.
 

-                    

+                  

 
-                

-                  
-                

-                
-                  
-                    
+                
+              

-
+              

+
+              
+                
+                  
-                  
-                

+                    
 +filter{js-events}           # Kill JavaScript event bindings and timers (Radically destructive! Only for extra nasty sites).
 

-                    

+                  

 
-                

-                  
-                

-                
-                  
-                    
+                
+              

-
+              

+
+              
+                
+                  
-                  
-                

+                    
 +filter{html-annoyances}     # Get rid of particularly annoying HTML abuse.
 

-                    

+                  

 
-                

-                  
-                

-                
-                  
-                    
+                
+              

-
+              

+
+              
+                
+                  
-                  
-                

+                    
 +filter{content-cookies}     # Kill cookies that come in the HTML or JS content.
 

-                    

+                  

 
-                

-                  
-                

-                
-                  
-                    
+                
+              

-
+              

+
+              
+                
+                  
-                  
-                

+                    
 +filter{refresh-tags}        # Kill automatic refresh tags if refresh time is larger than 9 seconds.
 

-                    

+                  

 
-                

-                  
-                

-                
-                  
-                    
+                
+              

-
+              

+
+              
+                
+                  
-                  
-                

+                    
 +filter{unsolicited-popups}  # Disable only unsolicited pop-up windows.
 

-                    

+                  

 
-                

-                  
-                

-                
-                  
-                    
+                
+              

-
+              

+
+              
+                
+                  
-                  
-                

+                    
 +filter{all-popups}          # Kill all popups in JavaScript and HTML.
 

-                    

+                  

 
-                

-                  
-                

-                
-                  
-                    
+                
+              

-
+              

+
+              
+                
+                  
-                  
-                

+                    
 +filter{img-reorder}         # Reorder attributes in <img> tags to make the banners-by-* filters more effective.
 

-                    

+                  

 
-                

-                  
-                

-                
-                  
-                    
+                
+              

-
+              

+
+              
+                
+                  
-                  
-                

+                    
 +filter{banners-by-size}     # Kill banners by size.
 

-                    

+                  

 
-                

-                  
-                

-                
-                  
-                    
+                
+              

-
+              

+
+              
+                
+                  
-                  
-                

+                    
 +filter{banners-by-link}     # Kill banners by their links to known clicktrackers.
 

-                    

+                  

 
-                

-                  
-                

-                
-                  
-                    
+                
+              

-
+              

+
+              
+                
+                  
-                  
-                

+                    
 +filter{webbugs}             # Squish WebBugs (1x1 invisible GIFs used for user tracking).
 

-                    

+                  

 
-                

-                  
-                

-                
-                  
-                    
+                
+              

-
+              

+
+              
+                
+                  
-                  
-                

+                    
 +filter{tiny-textforms}      # Extend those tiny textareas up to 40x80 and kill the hard wrap.
 

-                    

+                  

 
-                

-                  
-                

-                
-                  
-                    
+                
+              

-
+              

+
+              
+                
+                  
-                  
-                

+                    
 +filter{jumping-windows}     # Prevent windows from resizing and moving themselves.
 

-                    

+                  

 
-                

-                  
-                

-                
-                  
-                    
+                
+              

-
+              

+
+              
+                
+                  
-                  
-                

+                    
 +filter{frameset-borders}    # Give frames a border and make them resizable.
 

-                    

+                  

 
-                

-                  
-                

-                
-                  
-                    
+                
+              

-
+              

+
+              
+                
+                  
-                  
-                

+                    
 +filter{iframes}             # Removes all detected iframes. Should only be enabled for individual sites.
 

-                    

+                  

 
-                

-                  
-                

-                
-                  
-                    
+                
+              

-
+              

+
+              
+                
+                  
-                  
-                

+                    
 +filter{demoronizer}         # Fix MS's non-standard use of standard charsets.
 

-                    

+                  

 
-                

-                  
-                

-                
-                  
-                    
+                
+              

-
+              

+
+              
+                
+                  
-                  
-                

+                    
 +filter{shockwave-flash}     # Kill embedded Shockwave Flash objects.
 

-                    

+                  

 
-                

-                  
-                

-                
-                  
-                    
+                
+              

-
+              

+
+              
+                
+                  
-                  
-                

+                    
 +filter{quicktime-kioskmode} # Make Quicktime movies saveable.
 

-                    

+                  

 
-                

-                  
-                

-                
-                  
-                    
+                
+              

-
+              

+
+              
+                
+                  
-                  
-                

+                    
 +filter{fun}                 # Text replacements for subversive browsing fun!
 

-                    

+                  

 
-                

-                  
-                

-                
-                  
-                    
+                
+              

-
+              

+
+              
+                
+                  
-                  
-                

+                    
 +filter{crude-parental}      # Crude parental filtering. Note that this filter doesn't work reliably.
 

-                    

+                  

 
-                

-                  
-                

-                
-                  
-                    
+                
+              

-
+              

+
+              
+                
+                  
-                  
-                

+                    
 +filter{ie-exploits}         # Disable some known Internet Explorer bug exploits.
 

-                    

+                  

 
-                

-                  
-                

-                
-                  
-                    
+                
+              

-
+              

+
+              
+                
+                  
-                  
-                

+                    
 +filter{site-specifics}      # Cure for site-specific problems. Don't apply generally!
 

-                    

+                  

 
-                

-                  
-                

-                
-                  
-                    
+                
+              

-
+              

+
+              
+                
+                  
-                  
-                

+                    
 +filter{no-ping}             # Removes non-standard ping attributes in <a> and <area> tags.
 

-                    

+                  

 
-                

-                  
-                

-                
-                  
-                    
+                
+              

-
+              

+
+              
+                
+                  
-                  
-                

+                    
 +filter{google}              # CSS-based block for Google text ads. Also removes a width limitation and the toolbar advertisement.
 

-                    

+                  

 
-                

-                  
-                

-                
-                  
-                    
+                
+              

-
+              

+
+              
+                
+                  
-                  
-                

+                    
 +filter{yahoo}               # CSS-based block for Yahoo text ads. Also removes a width limitation.
 

-                    

+                  

 
-                

-                  
-                

-                
-                  
-                    
+                
+              

-
+              

+
+              
+                
+                  
-                  
-                

+                    
 +filter{msn}                 # CSS-based block for MSN text ads. Also removes tracking URLs and a width limitation.
 

-                    

+                  

 
-                

-                  
-                

-                
-                  
-                    

-
+              

+
+              
+                
+                  
+                
+              

+                    
 +filter{blogspot}            # Cleans up some Blogspot blogs. Read the fine print before using this.
 

+                  

+            
+          
+        
+      
+
+      

+        
8.5.17. force-text-mode

+
+        

+          

+            
Typical use:

+
+            

+              
Force Privoxy to treat a
+              document as if it was in some kind of text format.

+            

+
+            
Effect:

+
+            

+              
Declares a document as text, even if the "Content-Type:" isn't detected as such.

+            

+
+            
Type:

+
+            

+              
Boolean.

+            

+
+            
Parameter:

+
+            

+              
N/A

+            

+
+            
Notes:

+
+            

+              
As explained above, Privoxy tries to only filter files that
+              are in some kind of text format. The same restrictions apply to
+              content-type-overwrite.
+              force-text-mode declares a document as
+              text, without looking at the "Content-Type:" first.

+
+              

+                
+                  
+                    
+                  
+
+                  
+                    
Warning

+                      
Think twice before activating this action. Filtering
+                      binary data with regular expressions can cause file
+                      damage.

                     		
                   

                 

-              

-            

-          

-        

-        

-          

-            8.5.17. force-text-mode
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Force Privoxy to treat a
-                  document as if it was in some kind of text format.
-                

-              

-              

-                Effect:
-              

-              

-                

-                  Declares a document as text, even if the "Content-Type:" isn't detected as such.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Boolean.
-                

-              

-              

-                Parameter:
-              

-              

-                

-                  N/A
-                

-              

-              

-                Notes:
-              

-              

-                

-                  As explained above, Privoxy tries to only filter files
-                  that are in some kind of text format. The same restrictions
-                  apply to content-type-overwrite.
-                  force-text-mode declares a
-                  document as text, without looking at the "Content-Type:" first.
-                

-                

-                  
-                    
-                      
-                    
-                    
-                      
-                    
-                  

-                        Warning
-                      

-                        

-                          Think twice before activating this action.
-                          Filtering binary data with regular expressions can
-                          cause file damage.
-                        

-                      

-                

-              

-              

-                Example usage:
-              

-              

-                

-                

-                
-                  
-                    

-
+              
+            
+
+            
Example usage:

+
+            

+              
+                
+                  
+                
+              

+                    
 +force-text-mode
 
 

+                  

+            

+          
+        
+      
+
+      

+        
8.5.18. forward-override

+
+        

+          

+            
Typical use:

+
+            

+              
Change the forwarding settings based on User-Agent or
+              request origin

+            

+
+            
Effect:

+
+            

+              
Overrules the forward directives in the configuration
+              file.

+            

+
+            
Type:

+
+            

+              
Parameterized.

+            

+
+            
Parameter:

+
+            

+              
    
+                
  • 
+                  
    "forward ." to use a direct
+                  connection without any additional proxies.
    
+                
    • 
+
+                
  • 
+                  
    "forward 127.0.0.1:8123" to
+                  use the HTTP proxy listening at 127.0.0.1 port 8123.
    
+                
    • 
+
+                
  • 
+                  
    "forward-socks4a 127.0.0.1:9050
+                  ." to use the socks4a proxy listening at 127.0.0.1
+                  port 9050. Replace "forward-socks4a" with "forward-socks4" to use a socks4 connection
+                  (with local DNS resolution) instead, use "forward-socks5" for socks5 connections
+                  (with remote DNS resolution).
    
+                
    • 
+
+                
  • 
+                  
    "forward-socks4a 127.0.0.1:9050
+                  proxy.example.org:8000" to use the socks4a proxy
+                  listening at 127.0.0.1 port 9050 to reach the HTTP proxy
+                  listening at proxy.example.org port 8000. Replace
+                  "forward-socks4a" with
+                  "forward-socks4" to use a socks4
+                  connection (with local DNS resolution) instead, use
+                  "forward-socks5" for socks5
+                  connections (with remote DNS resolution).
    
+                
    • 
+
+                
  • 
+                  
    "forward-webserver
+                  127.0.0.1:80" to use the HTTP server listening at
+                  127.0.0.1 port 80 without adjusting the request
+                  headers.
    
+
+                  
    This makes it more convenient to use Privoxy to make
+                  existing websites available as onion services as well.
    
+
+                  
    Many websites serve content with hardcoded URLs and
+                  can't be easily adjusted to change the domain based on the
+                  one used by the client.
    
+
+                  
    Putting Privoxy between Tor and the webserver (or an
+                  stunnel that forwards to the webserver) allows to rewrite
+                  headers and content to make client and server happy at the
+                  same time.
    
+
+                  
    Using Privoxy for webservers that are only reachable
+                  through onion addresses and whose location is supposed to
+                  be secret is not recommended and should not be necessary
+                  anyway.
    
+                
    • 
+              

+            

+
+            
Notes:

+
+            

+              
This action takes parameters similar to the forward directives in the
+              configuration file, but without the URL pattern. It can be used
+              as replacement, but normally it's only used in cases where
+              matching based on the request URL isn't sufficient.

+
+              

+                
+                  
+                    
+                  
+
+                  
+                    
Warning

+                      
Please read the description for the forward directives before
+                      using this action. Forwarding to the wrong people will
+                      reduce your privacy and increase the chances of
+                      man-in-the-middle attacks.

+
+                      
If the ports are missing or invalid, default values
+                      will be used. This might change in the future and you
+                      shouldn't rely on it. Otherwise incorrect syntax causes
+                      Privoxy to exit. Due to design limitations, invalid
+                      parameter syntax isn't detected until the action is
+                      used the first time.

+
+                      
Use the show-url-info CGI page to verify that your
+                      forward settings do what you thought the do.

                     		
                   

                 

-              

-            

-          

-        

-        

-          

-            8.5.18. forward-override
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Change the forwarding settings based on User-Agent or
-                  request origin
-                

-              

-              

-                Effect:
-              

-              

-                

-                  Overrules the forward directives in the configuration file.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Parameterized.
-                

-              

-              

-                Parameter:
-              

-              

-                
    
-                  
  • 
-                    
    
-                      "forward ." to use a direct
-                      connection without any additional proxies.
-                    
    
-                  
    • 
-                  
  • 
-                    
    
-                      "forward 127.0.0.1:8123" to
-                      use the HTTP proxy listening at 127.0.0.1 port 8123.
-                    
    
-                  
    • 
-                  
  • 
-                    
    
-                      "forward-socks4a 127.0.0.1:9050
-                      ." to use the socks4a proxy listening at
-                      127.0.0.1 port 9050. Replace "forward-socks4a" with "forward-socks4" to use a socks4
-                      connection (with local DNS resolution) instead, use
-                      "forward-socks5" for socks5
-                      connections (with remote DNS resolution).
-                    
    
-                  
    • 
-                  
  • 
-                    
    
-                      "forward-socks4a 127.0.0.1:9050
-                      proxy.example.org:8000" to use the socks4a proxy
-                      listening at 127.0.0.1 port 9050 to reach the HTTP
-                      proxy listening at proxy.example.org port 8000. Replace
-                      "forward-socks4a" with "forward-socks4" to use a socks4
-                      connection (with local DNS resolution) instead, use
-                      "forward-socks5" for socks5
-                      connections (with remote DNS resolution).
-                    
    
-                  
    • 
-                  
  • 
-                    
    
-                      "forward-webserver
-                      127.0.0.1:80" to use the HTTP server listening
-                      at 127.0.0.1 port 80 without adjusting the request
-                      headers.
-                    
    
-                    
    
-                      This makes it more convenient to use Privoxy to make
-                      existing websites available as onion services as well.
-                    
    
-                    
    
-                      Many websites serve content with hardcoded URLs and
-                      can't be easily adjusted to change the domain based on
-                      the one used by the client.
-                    
    
-                    
    
-                      Putting Privoxy between Tor and the webserver (or an
-                      stunnel that forwards to the webserver) allows to
-                      rewrite headers and content to make client and server
-                      happy at the same time.
-                    
    
-                    
    
-                      Using Privoxy for webservers that are only reachable
-                      through onion addresses and whose location is supposed
-                      to be secret is not recommended and should not be
-                      necessary anyway.
-                    
    
-                  
    • 
-                

-              

-              

-                Notes:
-              

-              

-                

-                  This action takes parameters similar to the forward directives in the
-                  configuration file, but without the URL pattern. It can be
-                  used as replacement, but normally it's only used in cases
-                  where matching based on the request URL isn't sufficient.
-                

-                

-                  
-                    
-                      
-                    
-                    
-                      
-                    
-                  

-                        Warning
-                      

-                        

-                          Please read the description for the forward directives
-                          before using this action. Forwarding to the wrong
-                          people will reduce your privacy and increase the
-                          chances of man-in-the-middle attacks.
-                        

-                        

-                          If the ports are missing or invalid, default values
-                          will be used. This might change in the future and
-                          you shouldn't rely on it. Otherwise incorrect
-                          syntax causes Privoxy to exit. Due to design
-                          limitations, invalid parameter syntax isn't
-                          detected until the action is used the first time.
-                        

-                        

-                          Use the show-url-info CGI page to verify that
-                          your forward settings do what you thought the do.
-                        

-                      

-                

-              

-              

-                Example usage:
-              

-              

-                

-                

-                
-                  
-                    
+                
+              

-
+              
+            
+
+            
Example usage:

+
+            

+              
+                
+                  
-                  
-                

+                    
 # Use an ssh tunnel for requests previously tagged as
 # "User-Agent: fetch libfetch/2.0" and make sure
 # resuming downloads continues to work.
@@ -3506,192 +3001,162 @@ problem-host.example.com
 TAG:^User-Agent: fetch libfetch/2\.0$
 
 

-                    

-              

-            
-          
+                  

+            

+          

         

-        

-          

-            8.5.19.
-            handle-as-empty-document
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Mark URLs that should be replaced by empty documents if they get
-                  blocked
-                

-              

-              

-                Effect:
-              

-              

-                

-                  This action alone doesn't do anything noticeable. It just
-                  marks URLs. If the block action also
-                  applies, the presence or absence of this mark
-                  decides whether an HTML "BLOCKED" page, or an empty document will be
-                  sent to the client as a substitute for the blocked content.
-                  The empty document isn't literally empty,
-                  but actually contains a single space.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Boolean.
-                

-              

-              

-                Parameter:
-              

-              

-                

-                  N/A
-                

-              

-              

-                Notes:
-              

-              

-                

-                  Some browsers complain about syntax errors if JavaScript
-                  documents are blocked with Privoxy's default HTML page; this
-                  option can be used to silence them. And of course this
-                  action can also be used to eliminate the Privoxy BLOCKED message in frames.
-                

-                

-                  The content type for the empty document can be specified
-                  with content-type-overwrite{},
-                  but usually this isn't necessary.
-                

-              

-              

-                Example usage:
-              

-              

-                

-                

-                
-                  
-                    
+                
+              

-
+      
+
+      

+        
8.5.19. handle-as-empty-document

+
+        

+          

+            
Typical use:

+
+            

+              
Mark URLs that should be replaced by empty documents
+              if they get
+              blocked

+            

+
+            
Effect:

+
+            

+              
This action alone doesn't do anything noticeable. It just
+              marks URLs. If the block action also applies, the
+              presence or absence of this mark decides whether an HTML
+              "BLOCKED" page, or an empty document
+              will be sent to the client as a substitute for the blocked
+              content. The empty document isn't literally empty, but
+              actually contains a single space.

+            

+
+            
Type:

+
+            

+              
Boolean.

+            

+
+            
Parameter:

+
+            

+              
N/A

+            

+
+            
Notes:

+
+            

+              
Some browsers complain about syntax errors if JavaScript
+              documents are blocked with Privoxy's default HTML page; this option
+              can be used to silence them. And of course this action can also
+              be used to eliminate the Privoxy BLOCKED message in frames.

+
+              
The content type for the empty document can be specified
+              with content-type-overwrite{},
+              but usually this isn't necessary.

+            

+
+            
Example usage:

+
+            

+              
+                
+                  
-                  
-                

+                    
 # Block all documents on example.org that end with ".js",
 # but send an empty document instead of the usual HTML message.
 {+block{Blocked JavaScript} +handle-as-empty-document}
 example.org/.*\.js$
 
 

-                    

-              

-            

-          

+                  

+            

+          

         

-        

-          

-            8.5.20. handle-as-image
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Mark URLs as belonging to images (so they'll be replaced by
-                  images if they
-                  do get blocked, rather than HTML pages)
-                

-              

-              

-                Effect:
-              

-              

-                

-                  This action alone doesn't do anything noticeable. It just
-                  marks URLs as images. If the block action also
-                  applies, the presence or absence of this mark
-                  decides whether an HTML "blocked" page, or a replacement image (as
-                  determined by the set-image-blocker
-                  action) will be sent to the client as a substitute for the
-                  blocked content.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Boolean.
-                

-              

-              

-                Parameter:
-              

-              

-                

-                  N/A
-                

-              

-              

-                Notes:
-              

-              

-                

-                  The below generic example section is actually part of default.action. It marks all URLs
-                  with well-known image file name extensions as images and
-                  should be left intact.
-                

-                

-                  Users will probably only want to use the handle-as-image
-                  action in conjunction with block, to block sources
-                  of banners, whose URLs don't reflect the file type, like in
-                  the second example section.
-                

-                

-                  Note that you cannot treat HTML pages as images in most
-                  cases. For instance, (in-line) ad frames require an HTML
-                  page to be sent, or they won't display properly. Forcing
-                  handle-as-image in this situation
-                  will not replace the ad frame with an image, but lead to
-                  error messages.
-                

-              

-              

-                Example usage (sections):
-              

-              

-                

-                

-                
-                  
-                    
+                
+              

-
+      
+
+      

+        
8.5.20. handle-as-image

+
+        

+          

+            
Typical use:

+
+            

+              
Mark URLs as belonging to images (so they'll be replaced by
+              images if they do
+              get blocked, rather than HTML pages)

+            

+
+            
Effect:

+
+            

+              
This action alone doesn't do anything noticeable. It just
+              marks URLs as images. If the block action also applies, the
+              presence or absence of this mark decides whether an HTML
+              "blocked" page, or a replacement
+              image (as determined by the set-image-blocker
+              action) will be sent to the client as a substitute for the
+              blocked content.

+            

+
+            
Type:

+
+            

+              
Boolean.

+            

+
+            
Parameter:

+
+            

+              
N/A

+            

+
+            
Notes:

+
+            

+              
The below generic example section is actually part of
+              default.action. It marks all URLs
+              with well-known image file name extensions as images and should
+              be left intact.

+
+              
Users will probably only want to use the handle-as-image
+              action in conjunction with block, to block sources of
+              banners, whose URLs don't reflect the file type, like in the
+              second example section.

+
+              
Note that you cannot treat HTML pages as images in most
+              cases. For instance, (in-line) ad frames require an HTML page
+              to be sent, or they won't display properly. Forcing handle-as-image in this situation will not
+              replace the ad frame with an image, but lead to error
+              messages.

+            

+
+            
Example usage (sections):

+
+            

+              
+                
+                  
-                  
-                

+                    
 # Generic image extensions:
 #
 {+handle-as-image}
@@ -3703,946 +3168,792 @@ example.org/.*\.js$
 {+block{Nasty banners.} +handle-as-image}
 nasty-banner-server.example.com/junk.cgi\?output=trash
 

-                    

-              

-            

-          

+                  

+            

+          

         

-        

-          

-            8.5.21. hide-accept-language
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Pretend to use different language settings.
-                

-              

-              

-                Effect:
-              

-              

-                

-                  Deletes or replaces the "Accept-Language:" HTTP header in client
-                  requests.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Parameterized.
-                

-              

-              

-                Parameter:
-              

-              

-                

-                  Keyword: "block", or any user
-                  defined value.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  Faking the browser's language settings can be useful to
-                  make a foreign User-Agent set with hide-user-agent
-                  more believable.
-                

-                

-                  However some sites with content in different languages
-                  check the "Accept-Language:" to
-                  decide which one to take by default. Sometimes it isn't
-                  possible to later switch to another language without
-                  changing the "Accept-Language:"
-                  header first.
-                

-                

-                  Therefore it's a good idea to either only change the "Accept-Language:" header to languages
-                  you understand, or to languages that aren't wide spread.
-                

-                

-                  Before setting the "Accept-Language:" header to a rare
-                  language, you should consider that it helps to make your
-                  requests unique and thus easier to trace. If you don't plan
-                  to change this header frequently, you should stick to a
-                  common language.
-                

-              

-              

-                Example usage (section):
-              

-              

-                

-                

-                
-                  
-                    
+                
+              

-
+      
+
+      

+        
8.5.21. hide-accept-language

+
+        

+          

+            
Typical use:

+
+            

+              
Pretend to use different language settings.

+            

+
+            
Effect:

+
+            

+              
Deletes or replaces the "Accept-Language:" HTTP header in client
+              requests.

+            

+
+            
Type:

+
+            

+              
Parameterized.

+            

+
+            
Parameter:

+
+            

+              
Keyword: "block", or any user
+              defined value.

+            

+
+            
Notes:

+
+            

+              
Faking the browser's language settings can be useful to make
+              a foreign User-Agent set with hide-user-agent
+              more believable.

+
+              
However some sites with content in different languages check
+              the "Accept-Language:" to decide
+              which one to take by default. Sometimes it isn't possible to
+              later switch to another language without changing the
+              "Accept-Language:" header first.

+
+              
Therefore it's a good idea to either only change the
+              "Accept-Language:" header to
+              languages you understand, or to languages that aren't wide
+              spread.

+
+              
Before setting the "Accept-Language:" header to a rare language,
+              you should consider that it helps to make your requests unique
+              and thus easier to trace. If you don't plan to change this
+              header frequently, you should stick to a common language.

+            

+
+            
Example usage (section):

+
+            

+              
+                
+                  
-                  
-                

+                    
 # Pretend to use Canadian language settings.
 {+hide-accept-language{en-ca} \
 +hide-user-agent{Mozilla/5.0 (X11; U; OpenBSD i386; en-CA; rv:1.8.0.4) Gecko/20060628 Firefox/1.5.0.4} \
 }
 /
 

-                    

-              

-            

-          

+                  

+            

+          

         

-        

-          

-            8.5.22.
-            hide-content-disposition
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Prevent download menus for content you prefer to view
-                  inside the browser.
-                

-              

-              

-                Effect:
-              

-              

-                

-                  Deletes or replaces the "Content-Disposition:" HTTP header set by
-                  some servers.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Parameterized.
-                

-              

-              

-                Parameter:
-              

-              

-                

-                  Keyword: "block", or any user
-                  defined value.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  Some servers set the "Content-Disposition:" HTTP header for
-                  documents they assume you want to save locally before
-                  viewing them. The "Content-Disposition:" header contains the
-                  file name the browser is supposed to use by default.
-                

-                

-                  In most browsers that understand this header, it makes it
-                  impossible to just view the document, without
-                  downloading it first, even if it's just a simple text file
-                  or an image.
-                

-                

-                  Removing the "Content-Disposition:" header helps to
-                  prevent this annoyance, but some browsers additionally
-                  check the "Content-Type:"
-                  header, before they decide if they can display a document
-                  without saving it first. In these cases, you have to change
-                  this header as well, before the browser stops displaying
-                  download menus.
-                

-                

-                  It is also possible to change the server's file name
-                  suggestion to another one, but in most cases it isn't worth
-                  the time to set it up.
-                

-                

-                  This action will probably be removed in the future, use
-                  server-header filters instead.
-                

-              

-              

-                Example usage:
-              

-              

-                

-                

-                
-                  
-                    
+                
+              

-
+      
+
+      

+        
8.5.22. hide-content-disposition

+
+        

+          

+            
Typical use:

+
+            

+              
Prevent download menus for content you prefer to view inside
+              the browser.

+            

+
+            
Effect:

+
+            

+              
Deletes or replaces the "Content-Disposition:" HTTP header set by some
+              servers.

+            

+
+            
Type:

+
+            

+              
Parameterized.

+            

+
+            
Parameter:

+
+            

+              
Keyword: "block", or any user
+              defined value.

+            

+
+            
Notes:

+
+            

+              
Some servers set the "Content-Disposition:" HTTP header for documents
+              they assume you want to save locally before viewing them. The
+              "Content-Disposition:" header
+              contains the file name the browser is supposed to use by
+              default.

+
+              
In most browsers that understand this header, it makes it
+              impossible to just
+              view the document, without downloading it first,
+              even if it's just a simple text file or an image.

+
+              
Removing the "Content-Disposition:" header helps to prevent
+              this annoyance, but some browsers additionally check the
+              "Content-Type:" header, before they
+              decide if they can display a document without saving it first.
+              In these cases, you have to change this header as well, before
+              the browser stops displaying download menus.

+
+              
It is also possible to change the server's file name
+              suggestion to another one, but in most cases it isn't worth the
+              time to set it up.

+
+              
This action will probably be removed in the future, use
+              server-header filters instead.

+            

+
+            
Example usage:

+
+            

+              
+                
+                  
-                  
-                

+                    
 # Disarm the download link in Sourceforge's patch tracker
 { -filter \
  +content-type-overwrite{text/plain}\
  +hide-content-disposition{block} }
  .sourceforge.net/tracker/download\.php
 

-                    

-              

-            

-          

+                  

+            

+          

         

-        

-          

-            8.5.23.
-            hide-if-modified-since
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Prevent yet another way to track the user's steps between
-                  sessions.
-                

-              

-              

-                Effect:
-              

-              

-                

-                  Deletes the "If-Modified-Since:"
-                  HTTP client header or modifies its value.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Parameterized.
-                

-              

-              

-                Parameter:
-              

-              

-                

-                  Keyword: "block", or a user
-                  defined value that specifies a range of hours.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  Removing this header is useful for filter testing, where
-                  you want to force a real reload instead of getting status
-                  code "304", which would cause
-                  the browser to use a cached copy of the page.
-                

-                

-                  Instead of removing the header, hide-if-modified-since can also add or
-                  subtract a random amount of time to/from the header's
-                  value. You specify a range of minutes where the random
-                  factor should be chosen from and Privoxy does the rest. A negative
-                  value means subtracting, a positive value adding.
-                

-                

-                  Randomizing the value of the "If-Modified-Since:" makes it less likely
-                  that the server can use the time as a cookie replacement,
-                  but you will run into caching problems if the random range
-                  is too high.
-                

-                

-                  It is a good idea to only use a small negative value and
-                  let overwrite-last-modified
-                  handle the greater changes.
-                

-                

-                  It is also recommended to use this action together with crunch-if-none-match,
-                  otherwise it's more or less pointless.
-                

-              

-              

-                Example usage (section):
-              

-              

-                

-                

-                
-                  
-                    
+                
+              

-
+      
+
+      

+        
8.5.23. hide-if-modified-since

+
+        

+          

+            
Typical use:

+
+            

+              
Prevent yet another way to track the user's steps between
+              sessions.

+            

+
+            
Effect:

+
+            

+              
Deletes the "If-Modified-Since:"
+              HTTP client header or modifies its value.

+            

+
+            
Type:

+
+            

+              
Parameterized.

+            

+
+            
Parameter:

+
+            

+              
Keyword: "block", or a user
+              defined value that specifies a range of hours.

+            

+
+            
Notes:

+
+            

+              
Removing this header is useful for filter testing, where you
+              want to force a real reload instead of getting status code
+              "304", which would cause the browser
+              to use a cached copy of the page.

+
+              
Instead of removing the header, hide-if-modified-since can also add or subtract
+              a random amount of time to/from the header's value. You specify
+              a range of minutes where the random factor should be chosen
+              from and Privoxy does the
+              rest. A negative value means subtracting, a positive value
+              adding.

+
+              
Randomizing the value of the "If-Modified-Since:" makes it less likely that
+              the server can use the time as a cookie replacement, but you
+              will run into caching problems if the random range is too
+              high.

+
+              
It is a good idea to only use a small negative value and let
+              overwrite-last-modified
+              handle the greater changes.

+
+              
It is also recommended to use this action together with
+              crunch-if-none-match,
+              otherwise it's more or less pointless.

+            

+
+            
Example usage (section):

+
+            

+              
+                
+                  
-                  
-                

+                    
 # Let the browser revalidate but make tracking based on the time less likely.
 {+hide-if-modified-since{-60} \
  +overwrite-last-modified{randomize} \
  +crunch-if-none-match}
 /
 

-                    

-              

-            

-          

+                  

+            

+          

         

-        

-          

-            8.5.24. hide-from-header
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Keep your (old and ill) browser from telling web servers
-                  your email address
-                

-              

-              

-                Effect:
-              

-              

-                

-                  Deletes any existing "From:"
-                  HTTP header, or replaces it with the specified string.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Parameterized.
-                

-              

-              

-                Parameter:
-              

-              

-                

-                  Keyword: "block", or any user
-                  defined value.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  The keyword "block" will
-                  completely remove the header (not to be confused with the
-                  block action).
-                

-                

-                  Alternately, you can specify any value you prefer to be
-                  sent to the web server. If you do, it is a matter of
-                  fairness not to use any address that is actually used by a
-                  real person.
-                

-                

-                  This action is rarely needed, as modern web browsers don't
-                  send "From:" headers anymore.
-                

-              

-              

-                Example usage:
-              

-              

-                

-                

-                
-                  
-                    
+                
+              

-
+      
+
+      

+        
8.5.24. hide-from-header

+
+        

+          

+            
Typical use:

+
+            

+              
Keep your (old and ill) browser from telling web servers
+              your email address

+            

+
+            
Effect:

+
+            

+              
Deletes any existing "From:" HTTP
+              header, or replaces it with the specified string.

+            

+
+            
Type:

+
+            

+              
Parameterized.

+            

+
+            
Parameter:

+
+            

+              
Keyword: "block", or any user
+              defined value.

+            

+
+            
Notes:

+
+            

+              
The keyword "block" will
+              completely remove the header (not to be confused with the
+              block action).

+
+              
Alternately, you can specify any value you prefer to be sent
+              to the web server. If you do, it is a matter of fairness not to
+              use any address that is actually used by a real person.

+
+              
This action is rarely needed, as modern web browsers don't
+              send "From:" headers anymore.

+            

+
+            
Example usage:

+
+            

+              
+                
+                  
-                  
-                

+                    
 +hide-from-header{block}
 

-                    

-                or
-                
-                  
-                    
+                
+              

-
+                  
or
+
+              
+                
+                  
-                  
-                

+                    
 +hide-from-header{spam-me-senseless@sittingduck.example.com}
 

-                    

-              

-            

-          

+                  

+            

+          

+        

+      

+
+      

+        
8.5.25.
+        hide-referrer

+
+        

+          

+            
Typical use:

+
+            

+              
Conceal which link you followed to get to a particular
+              site

+            

+
+            
Effect:

+
+            

+              
Deletes the "Referer:" (sic) HTTP
+              header from the client request, or replaces it with a forged
+              one.

+            

+
+            
Type:

+
+            

+              
Parameterized.

+            

+
+            
Parameter:

+
+            

+              
    
+                
  • 
+                  
    "conditional-block" to delete
+                  the header completely if the host has changed.
    
+                
    • 
+
+                
  • 
+                  
    "conditional-forge" to forge
+                  the header if the host has changed.
    
+                
    • 
+
+                
  • 
+                  
    "block" to delete the header
+                  unconditionally.
    
+                
    • 
+
+                
  • 
+                  
    "forge" to pretend to be
+                  coming from the homepage of the server we are talking
+                  to.
    
+                
    • 
+
+                
  • 
+                  
    Any other string to set a user defined referrer.
    
+                
    • 
+              

+            

+
+            
Notes:

+
+            

+              
conditional-block is the only
+              parameter, that isn't easily detected in the server's log file.
+              If it blocks the referrer, the request will look like the
+              visitor used a bookmark or typed in the address directly.

+
+              
Leaving the referrer unmodified for requests on the same
+              host allows the server owner to see the visitor's "click path", but in most cases she could also
+              get that information by comparing other parts of the log file:
+              for example the User-Agent if it isn't a very common one, or
+              the user's IP address if it doesn't change between different
+              requests.

+
+              
Always blocking the referrer, or using a custom one, can
+              lead to failures on servers that check the referrer before they
+              answer any requests, in an attempt to prevent their content
+              from being embedded or linked to elsewhere.

+
+              
Both conditional-block and
+              forge will work with referrer checks,
+              as long as content and valid referring page are on the same
+              host. Most of the time that's the case.

+
+              
hide-referer is an alternate
+              spelling of hide-referrer and the two
+              can be can be freely substituted with each other. ("referrer" is the correct English spelling,
+              however the HTTP specification has a bug - it requires it to be
+              spelled as "referer".)

+            

+
+            
Example usage:

+
+            

+              
+                
+                  
+                
+              

+                    
++hide-referrer{forge}
+

+                  
or
+
+              
+                
+                  
+                
+              

+                    
++hide-referrer{http://www.yahoo.com/}
+

+                  

+            

+          

         

-        

-          

-            8.5.25. hide-referrer
-          

-          
-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Conceal which link you followed to get to a particular site
-                

-              

-              

-                Effect:
-              

-              

-                

-                  Deletes the "Referer:" (sic)
-                  HTTP header from the client request, or replaces it with a
-                  forged one.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Parameterized.
-                

-              

-              

-                Parameter:
-              

-              

-                
    
-                  
  • 
-                    
    
-                      "conditional-block" to
-                      delete the header completely if the host has changed.
-                    
    
-                  
    • 
-                  
  • 
-                    
    
-                      "conditional-forge" to forge
-                      the header if the host has changed.
-                    
    
-                  
    • 
-                  
  • 
-                    
    
-                      "block" to delete the header
-                      unconditionally.
-                    
    
-                  
    • 
-                  
  • 
-                    
    
-                      "forge" to pretend to be
-                      coming from the homepage of the server we are talking
-                      to.
-                    
    
-                  
    • 
-                  
  • 
-                    
    
-                      Any other string to set a user defined referrer.
-                    
    
-                  
    • 
-                

-              

-              

-                Notes:
-              

-              

-                

-                  conditional-block is the only
-                  parameter, that isn't easily detected in the server's log
-                  file. If it blocks the referrer, the request will look like
-                  the visitor used a bookmark or typed in the address
-                  directly.
-                

-                

-                  Leaving the referrer unmodified for requests on the same
-                  host allows the server owner to see the visitor's "click path", but in most cases she
-                  could also get that information by comparing other parts of
-                  the log file: for example the User-Agent if it isn't a very
-                  common one, or the user's IP address if it doesn't change
-                  between different requests.
-                

-                

-                  Always blocking the referrer, or using a custom one, can
-                  lead to failures on servers that check the referrer before
-                  they answer any requests, in an attempt to prevent their
-                  content from being embedded or linked to elsewhere.
-                

-                

-                  Both conditional-block and forge will work with referrer checks,
-                  as long as content and valid referring page are on the same
-                  host. Most of the time that's the case.
-                

-                

-                  hide-referer is an alternate
-                  spelling of hide-referrer and the
-                  two can be can be freely substituted with each other.
-                  ("referrer" is the correct
-                  English spelling, however the HTTP specification has a bug
-                  - it requires it to be spelled as "referer".)
-                

-              

-              

-                Example usage:
-              

-              

-                

-                

-                
+      
+
+      

+        
8.5.26. hide-user-agent

+
+        

+          

+            
Typical use:

+
+            

+              
Try to conceal your type of browser and client operating
+              system

+            

+
+            
Effect:

+
+            

+              
Replaces the value of the "User-Agent:" HTTP header in client requests
+              with the specified value.

+            

+
+            
Type:

+
+            

+              
Parameterized.

+            

+
+            
Parameter:

+
+            

+              
Any user-defined string.

+            

+
+            
Notes:

+
+            

+              

+                

-                    
+                    
-                

                   

-
-+hide-referrer{forge}
-

-                    		Warning
                   

-                or
-                
+
                   
-                    

-
-+hide-referrer{http://www.yahoo.com/}
-

+                    		
+                      
This can lead to problems on web sites that depend
+                      on looking at this header in order to customize their
+                      content for different browsers (which, by the way, is
+                      NOT the right thing to do: good
+                      web sites work browser-independently).

                     		
                   

                 

-              

-            

-          

-        

-        

-          

-            8.5.26. hide-user-agent
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Try to conceal your type of browser and client operating
-                  system
-                

-              

-              

-                Effect:
-              

-              

-                

-                  Replaces the value of the "User-Agent:" HTTP header in client requests
-                  with the specified value.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Parameterized.
-                

-              

-              

-                Parameter:
-              

-              

-                

-                  Any user-defined string.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  
-                    
-                      
-                    
-                    
-                      
-                    
-                  

-                        Warning
-                      

-                        

-                          This can lead to problems on web sites that depend
-                          on looking at this header in order to customize
-                          their content for different browsers (which, by the
-                          way, is NOT the right thing to do:
-                          good web sites work browser-independently).
-                        

-                      

-                

-                

-                  Using this action in multi-user setups or wherever
-                  different types of browsers will access the same Privoxy is not recommended.
-                  In single-user, single-browser setups, you might use it to
-                  delete your OS version information from the headers,
-                  because it is an invitation to exploit known bugs for your
-                  OS. It is also occasionally useful to forge this in order
-                  to access sites that won't let you in otherwise (though
-                  there may be a good reason in some cases).
-                

-                

-                  More information on known user-agent strings can be found
-                  at http://www.user-agents.org/ and http://en.wikipedia.org/wiki/User_agent.
-                

-              

-              

-                Example usage:
-              

-              

-                

-                

-                
-                  
-                    
+                
+              

-
+              
+
+              
Using this action in multi-user setups or wherever different
+              types of browsers will access the same Privoxy is not recommended. In
+              single-user, single-browser setups, you might use it to delete
+              your OS version information from the headers, because it is an
+              invitation to exploit known bugs for your OS. It is also
+              occasionally useful to forge this in order to access sites that
+              won't let you in otherwise (though there may be a good reason
+              in some cases).

+
+              
More information on known user-agent strings can be found at
+              http://www.user-agents.org/ and http://en.wikipedia.org/wiki/User_agent.

+            
+
+            
Example usage:

+
+            

+              
+                
+                  
-                  
-                

+                    
 +hide-user-agent{Netscape 6.1 (X11; I; Linux 2.4.18 i686)}
 

-                    

-              

-            
-          
+                  

+            

+          

         

-        

-          

-            8.5.27. limit-connect
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Prevent abuse of Privoxy
-                  as a TCP proxy relay or disable SSL for untrusted sites
-                

-              

-              

-                Effect:
-              

-              

-                

-                  Specifies to which ports HTTP CONNECT requests are
-                  allowable.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Parameterized.
-                

-              

-              

-                Parameter:
-              

-              

-                

-                  A comma-separated list of ports or port ranges (the latter
-                  using dashes, with the minimum defaulting to 0 and the
-                  maximum to 65K).
-                

-              

-              

-                Notes:
-              

-              

-                

-                  By default, i.e. if no limit-connect action applies, Privoxy allows HTTP CONNECT requests
-                  to all ports. Use limit-connect if
-                  fine-grained control is desired for some or all
-                  destinations.
-                

-                

-                  The CONNECT methods exists in HTTP to allow access to
-                  secure websites ("https://"
-                  URLs) through proxies. It works very simply: the proxy
-                  connects to the server on the specified port, and then
-                  short-circuits its connections to the client and to the
-                  remote server. This means CONNECT-enabled proxies can be
-                  used as TCP relays very easily.
-                

-                

-                  Privoxy relays HTTPS
-                  traffic without seeing the decoded content. Websites can
-                  leverage this limitation to circumvent Privoxy's filters. By specifying an
-                  invalid port range you can disable HTTPS entirely.
-                

-              

-              

-                Example usages:
-              

-              

-                

-                

-                
-                  
-                    
+                
+              

-
+      
+
+      

+        
8.5.27.
+        limit-connect

+
+        

+          

+            
Typical use:

+
+            

+              
Prevent abuse of Privoxy as
+              a TCP proxy relay or disable SSL for untrusted sites

+            

+
+            
Effect:

+
+            

+              
Specifies to which ports HTTP CONNECT requests are
+              allowable.

+            

+
+            
Type:

+
+            

+              
Parameterized.

+            

+
+            
Parameter:

+
+            

+              
A comma-separated list of ports or port ranges (the latter
+              using dashes, with the minimum defaulting to 0 and the maximum
+              to 65K).

+            

+
+            
Notes:

+
+            

+              
By default, i.e. if no limit-connect action applies, Privoxy allows HTTP CONNECT requests to
+              all ports. Use limit-connect if
+              fine-grained control is desired for some or all
+              destinations.

+
+              
The CONNECT methods exists in HTTP to allow access to secure
+              websites ("https://" URLs) through
+              proxies. It works very simply: the proxy connects to the server
+              on the specified port, and then short-circuits its connections
+              to the client and to the remote server. This means
+              CONNECT-enabled proxies can be used as TCP relays very
+              easily.

+
+              
Privoxy relays HTTPS
+              traffic without seeing the decoded content. Websites can
+              leverage this limitation to circumvent Privoxy's filters. By specifying an
+              invalid port range you can disable HTTPS entirely.

+            

+
+            
Example usages:

+
+            

+              
+                
+                  
-                  
-                

+                    
 +limit-connect{443}                   # Port 443 is OK.
 +limit-connect{80,443}                # Ports 80 and 443 are OK.
 +limit-connect{-3, 7, 20-100, 500-}   # Ports less than 3, 7, 20 to 100 and above 500 are OK.
 +limit-connect{-}                     # All ports are OK
 +limit-connect{,}                     # No HTTPS/SSL traffic is allowed
 

-                    

-              

-            

-          

+                  

+            

+          

         

-        

-          

-            8.5.28. limit-cookie-lifetime
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Limit the lifetime of HTTP cookies to a couple of minutes
-                  or hours.
-                

-              

-              

-                Effect:
-              

-              

-                

-                  Overwrites the expires field in Set-Cookie server headers
-                  if it's above the specified limit.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Parameterized.
-                

-              

-              

-                Parameter:
-              

-              

-                

-                  The lifetime limit in minutes, or 0.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  This action reduces the lifetime of HTTP cookies coming
-                  from the server to the specified number of minutes,
-                  starting from the time the cookie passes Privoxy.
-                

-                

-                  Cookies with a lifetime below the limit are not modified.
-                  The lifetime of session cookies is set to the specified
-                  limit.
-                

-                

-                  The effect of this action depends on the server.
-                

-                

-                  In case of servers which refresh their cookies with each
-                  response (or at least frequently), the lifetime limit set
-                  by this action is updated as well. Thus, a session
-                  associated with the cookie continues to work with this
-                  action enabled, as long as a new request is made before the
-                  last limit set is reached.
-                

-                

-                  However, some servers send their cookies once, with a
-                  lifetime of several years (the year 2037 is a popular
-                  choice), and do not refresh them until a certain event in
-                  the future, for example the user logging out. In this case
-                  this action may limit the absolute lifetime of the session,
-                  even if requests are made frequently.
-                

-                

-                  If the parameter is "0", this
-                  action behaves like session-cookies-only.
-                

-              

-              

-                Example usages:
-              

-              

-                

-                

-                
-                  
-                    
+                
+              

-
+      
+
+      

+        
8.5.28. limit-cookie-lifetime

+
+        

+          

+            
Typical use:

+
+            

+              
Limit the lifetime of HTTP cookies to a couple of minutes or
+              hours.

+            

+
+            
Effect:

+
+            

+              
Overwrites the expires field in Set-Cookie server headers if
+              it's above the specified limit.

+            

+
+            
Type:

+
+            

+              
Parameterized.

+            

+
+            
Parameter:

+
+            

+              
The lifetime limit in minutes, or 0.

+            

+
+            
Notes:

+
+            

+              
This action reduces the lifetime of HTTP cookies coming from
+              the server to the specified number of minutes, starting from
+              the time the cookie passes Privoxy.

+
+              
Cookies with a lifetime below the limit are not modified.
+              The lifetime of session cookies is set to the specified
+              limit.

+
+              
The effect of this action depends on the server.

+
+              
In case of servers which refresh their cookies with each
+              response (or at least frequently), the lifetime limit set by
+              this action is updated as well. Thus, a session associated with
+              the cookie continues to work with this action enabled, as long
+              as a new request is made before the last limit set is
+              reached.

+
+              
However, some servers send their cookies once, with a
+              lifetime of several years (the year 2037 is a popular choice),
+              and do not refresh them until a certain event in the future,
+              for example the user logging out. In this case this action may
+              limit the absolute lifetime of the session, even if requests
+              are made frequently.

+
+              
If the parameter is "0", this
+              action behaves like session-cookies-only.

+            

+
+            
Example usages:

+
+            

+              
+                
+                  
-                  
-                

+                    
 +limit-cookie-lifetime{60}
 
 

-                    

-              

-            

-          

+                  

+            

+          

         

-        

-          

-            8.5.29. prevent-compression
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Ensure that servers send the content uncompressed, so it
-                  can be passed through filters.
-                

-              

-              

-                Effect:
-              

-              

-                

-                  Removes the Accept-Encoding header which can be used to ask
-                  for compressed transfer.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Boolean.
-                

-              

-              

-                Parameter:
-              

-              

-                

-                  N/A
-                

-              

-              

-                Notes:
-              

-              

-                

-                  More and more websites send their content compressed by
-                  default, which is generally a good idea and saves
-                  bandwidth. But the filter and deanimate-gifs
-                  actions need access to the uncompressed data.
-                

-                

-                  When compiled with zlib support (available since Privoxy 3.0.7), content that
-                  should be filtered is decompressed on-the-fly and you don't
-                  have to worry about this action. If you are using an older
-                  Privoxy version, or one
-                  that hasn't been compiled with zlib support, this action
-                  can be used to convince the server to send the content
-                  uncompressed.
-                

-                

-                  Most text-based instances compress very well, the size is
-                  seldom decreased by less than 50%, for markup-heavy
-                  instances like news feeds saving more than 90% of the
-                  original size isn't unusual.
-                

-                

-                  Not using compression will therefore slow down the
-                  transfer, and you should only enable this action if you
-                  really need it. As of Privoxy 3.0.7 it's disabled in all
-                  predefined action settings.
-                

-                

-                  Note that some (rare) ill-configured sites don't handle
-                  requests for uncompressed documents correctly. Broken PHP
-                  applications tend to send an empty document body, some IIS
-                  versions only send the beginning of the content. If you
-                  enable prevent-compression per
-                  default, you might want to add exceptions for those sites.
-                  See the example for how to do that.
-                

-              

-              

-                Example usage (sections):
-              

-              

-                

-                

-                
-                  
-                    
+                
+              

-
+      
+
+      

+        
8.5.29. prevent-compression

+
+        

+          

+            
Typical use:

+
+            

+              
Ensure that servers send the content uncompressed, so it can
+              be passed through filters.

+            

+
+            
Effect:

+
+            

+              
Removes the Accept-Encoding header which can be used to ask
+              for compressed transfer.

+            

+
+            
Type:

+
+            

+              
Boolean.

+            

+
+            
Parameter:

+
+            

+              
N/A

+            

+
+            
Notes:

+
+            

+              
More and more websites send their content compressed by
+              default, which is generally a good idea and saves bandwidth.
+              But the filter and deanimate-gifs
+              actions need access to the uncompressed data.

+
+              
When compiled with zlib support (available since
+              Privoxy 3.0.7), content that
+              should be filtered is decompressed on-the-fly and you don't
+              have to worry about this action. If you are using an older
+              Privoxy version, or one that
+              hasn't been compiled with zlib support, this action can be used
+              to convince the server to send the content uncompressed.

+
+              
Most text-based instances compress very well, the size is
+              seldom decreased by less than 50%, for markup-heavy instances
+              like news feeds saving more than 90% of the original size isn't
+              unusual.

+
+              
Not using compression will therefore slow down the transfer,
+              and you should only enable this action if you really need it.
+              As of Privoxy 3.0.7 it's
+              disabled in all predefined action settings.

+
+              
Note that some (rare) ill-configured sites don't handle
+              requests for uncompressed documents correctly. Broken PHP
+              applications tend to send an empty document body, some IIS
+              versions only send the beginning of the content. If you enable
+              prevent-compression per default, you
+              might want to add exceptions for those sites. See the example
+              for how to do that.

+            

+
+            
Example usage (sections):

+
+            

+              
+                
+                  
-                  
-                

+                    
 # Selectively turn off compression, and enable a filter
 #
 { +filter{tiny-textforms} +prevent-compression }
@@ -4661,218 +3972,181 @@ nasty-banner-server.example.com/junk.cgi\?output=trash
 { -prevent-compression }
 .compusa.com/
 

-                    

-              

-            

-          

+                  

+            

+          

         

-        

-          

-            8.5.30.
-            overwrite-last-modified
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Prevent yet another way to track the user's steps between
-                  sessions.
-                

-              

-              

-                Effect:
-              

-              

-                

-                  Deletes the "Last-Modified:"
-                  HTTP server header or modifies its value.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Parameterized.
-                

-              

-              

-                Parameter:
-              

-              

-                

-                  One of the keywords: "block",
-                  "reset-to-request-time" and
-                  "randomize"
-                

-              

-              

-                Notes:
-              

-              

-                

-                  Removing the "Last-Modified:"
-                  header is useful for filter testing, where you want to
-                  force a real reload instead of getting status code "304", which would cause the browser
-                  to reuse the old version of the page.
-                

-                

-                  The "randomize" option
-                  overwrites the value of the "Last-Modified:" header with a randomly
-                  chosen time between the original value and the current
-                  time. In theory the server could send each document with a
-                  different "Last-Modified:"
-                  header to track visits without using cookies. "Randomize" makes it impossible and the
-                  browser can still revalidate cached documents.
-                

-                

-                  "reset-to-request-time"
-                  overwrites the value of the "Last-Modified:" header with the current
-                  time. You could use this option together with hide-if-modified-since
-                  to further customize your random range.
-                

-                

-                  The preferred parameter here is "randomize". It is safe to use, as long as
-                  the time settings are more or less correct. If the server
-                  sets the "Last-Modified:" header
-                  to the time of the request, the random range becomes zero
-                  and the value stays the same. Therefore you should later
-                  randomize it a second time with hided-if-modified-since,
-                  just to be sure.
-                

-                

-                  It is also recommended to use this action together with crunch-if-none-match.
-                

-              

-              

-                Example usage:
-              

-              

-                

-                

-                
-                  
-                    
+                
+              

-
+      
+
+      

+        
8.5.30. overwrite-last-modified

+
+        

+          

+            
Typical use:

+
+            

+              
Prevent yet another way to track the user's steps between
+              sessions.

+            

+
+            
Effect:

+
+            

+              
Deletes the "Last-Modified:" HTTP
+              server header or modifies its value.

+            

+
+            
Type:

+
+            

+              
Parameterized.

+            

+
+            
Parameter:

+
+            

+              
One of the keywords: "block",
+              "reset-to-request-time" and
+              "randomize"

+            

+
+            
Notes:

+
+            

+              
Removing the "Last-Modified:"
+              header is useful for filter testing, where you want to force a
+              real reload instead of getting status code "304", which would cause the browser to reuse
+              the old version of the page.

+
+              
The "randomize" option overwrites
+              the value of the "Last-Modified:"
+              header with a randomly chosen time between the original value
+              and the current time. In theory the server could send each
+              document with a different "Last-Modified:" header to track visits without
+              using cookies. "Randomize" makes it
+              impossible and the browser can still revalidate cached
+              documents.

+
+              
"reset-to-request-time"
+              overwrites the value of the "Last-Modified:" header with the current time.
+              You could use this option together with hide-if-modified-since
+              to further customize your random range.

+
+              
The preferred parameter here is "randomize". It is safe to use, as long as the
+              time settings are more or less correct. If the server sets the
+              "Last-Modified:" header to the time
+              of the request, the random range becomes zero and the value
+              stays the same. Therefore you should later randomize it a
+              second time with hided-if-modified-since,
+              just to be sure.

+
+              
It is also recommended to use this action together with
+              crunch-if-none-match.

+            

+
+            
Example usage:

+
+            

+              
+                
+                  
-                  
-                

+                    
 # Let the browser revalidate without being tracked across sessions
 { +hide-if-modified-since{-60} \
  +overwrite-last-modified{randomize} \
  +crunch-if-none-match}
 /
 

-                    

-              

-            

-          

+                  

+            

+          

         

-        

-          

-            8.5.31. redirect
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Redirect requests to other sites.
-                

-              

-              

-                Effect:
-              

-              

-                

-                  Convinces the browser that the requested document has been
-                  moved to another location and the browser should get it
-                  from there.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Parameterized
-                

-              

-              

-                Parameter:
-              

-              

-                

-                  An absolute URL or a single pcrs command.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  Requests to which this action applies are answered with a
-                  HTTP redirect to URLs of your choosing. The new URL is
-                  either provided as parameter, or derived by applying a
-                  single pcrs command to the original URL.
-                

-                

-                  The syntax for pcrs commands is documented in the filter file section.
-                

-                

-                  Requests can't be blocked and redirected at the same time,
-                  applying this action together with block is a
-                  configuration error. Currently the request is blocked and
-                  an error message logged, the behavior may change in the
-                  future and result in Privoxy rejecting the action file.
-                

-                

-                  This action can be combined with fast-redirects{check-decoded-url}
-                  to redirect to a decoded version of a rewritten URL.
-                

-                

-                  Use this action carefully, make sure not to create
-                  redirection loops and be aware that using your own
-                  redirects might make it possible to fingerprint your
-                  requests.
-                

-                

-                  In case of problems with your redirects, or simply to watch
-                  them working, enable debug
-                  128.
-                

-              

-              

-                Example usages:
-              

-              

-                

-                

-                
-                  
-                    
+                
+              

-
+      
+
+      

+        
8.5.31.
+        redirect

+
+        

+          

+            
Typical use:

+
+            

+              
Redirect requests to other sites.

+            

+
+            
Effect:

+
+            

+              
Convinces the browser that the requested document has been
+              moved to another location and the browser should get it from
+              there.

+            

+
+            
Type:

+
+            

+              
Parameterized

+            

+
+            
Parameter:

+
+            

+              
An absolute URL or a single pcrs command.

+            

+
+            
Notes:

+
+            

+              
Requests to which this action applies are answered with a
+              HTTP redirect to URLs of your choosing. The new URL is either
+              provided as parameter, or derived by applying a single pcrs
+              command to the original URL.

+
+              
The syntax for pcrs commands is documented in the filter file section.

+
+              
Requests can't be blocked and redirected at the same time,
+              applying this action together with block is a configuration
+              error. Currently the request is blocked and an error message
+              logged, the behavior may change in the future and result in
+              Privoxy rejecting the action file.

+
+              
This action can be combined with fast-redirects{check-decoded-url}
+              to redirect to a decoded version of a rewritten URL.

+
+              
Use this action carefully, make sure not to create
+              redirection loops and be aware that using your own redirects
+              might make it possible to fingerprint your requests.

+
+              
In case of problems with your redirects, or simply to watch
+              them working, enable debug
+              128.

+            

+
+            
Example usages:

+
+            

+              
+                
+                  
-                  
-                

+                    
 # Replace example.com's style sheet with another one
 { +redirect{http://localhost/css-replacements/example.com.css} }
  example.com/stylesheet\.css
@@ -4915,85 +4189,71 @@ i[0-9][0-9][0-9][0-9]*/
 {+redirect{s@^http://www@http://config@}}
 www.privoxy.org/user-manual/
 

-                    

-              

-            

-          

+                  

+            

+          

         

-        

-          

-            8.5.32. server-header-filter
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Rewrite or remove single server headers.
-                

-              

-              

-                Effect:
-              

-              

-                

-                  All server headers to which this action applies are
-                  filtered on-the-fly through the specified regular
-                  expression based substitutions.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Multi-value.
-                

-              

-              

-                Parameter:
-              

-              

-                

-                  The name of a server-header filter, as defined in one of
-                  the filter files.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  Server-header filters are applied to each header on its
-                  own, not to all at once. This makes it easier to diagnose
-                  problems, but on the downside you can't write filters that
-                  only change header x if header y's value is z. You can do
-                  that by using tags though.
-                

-                

-                  Server-header filters are executed after the other header
-                  actions have finished and use their output as input.
-                

-                

-                  Please refer to the filter file
-                  chapter to learn which server-header filters are
-                  available by default, and how to create your own.
-                

-              

-              

-                Example usage (section):
-              

-              

-                

-                

-                
-                  
-                    
+                
+              

-
+      
+
+      

+        
8.5.32. server-header-filter

+
+        

+          

+            
Typical use:

+
+            

+              
Rewrite or remove single server headers.

+            

+
+            
Effect:

+
+            

+              
All server headers to which this action applies are filtered
+              on-the-fly through the specified regular expression based
+              substitutions.

+            

+
+            
Type:

+
+            

+              
Multi-value.

+            

+
+            
Parameter:

+
+            

+              
The name of a server-header filter, as defined in one of the
+              filter files.

+            

+
+            
Notes:

+
+            

+              
Server-header filters are applied to each header on its own,
+              not to all at once. This makes it easier to diagnose problems,
+              but on the downside you can't write filters that only change
+              header x if header y's value is z. You can do that by using
+              tags though.

+
+              
Server-header filters are executed after the other header
+              actions have finished and use their output as input.

+
+              
Please refer to the filter file
+              chapter to learn which server-header filters are available
+              by default, and how to create your own.

+            

+
+            
Example usage (section):

+
+            

+              
+                
+                  
-                  
-                

+                    
 {+server-header-filter{html-to-xml}}
 example.org/xml-instance-that-is-delivered-as-html
 
@@ -5001,87 +4261,74 @@ example.org/xml-instance-that-is-delivered-as-html
 example.org/instance-that-is-delivered-as-xml-but-is-not
 
 

-                    

-              

-            

-          

+                  

+            

+          

         

-        

-          

-            8.5.33. server-header-tagger
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Enable or disable filters based on the Content-Type header.
-                

-              

-              

-                Effect:
-              

-              

-                

-                  Server headers to which this action applies are filtered
-                  on-the-fly through the specified regular expression based
-                  substitutions, the result is used as tag.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Multi-value.
-                

-              

-              

-                Parameter:
-              

-              

-                

-                  The name of a server-header tagger, as defined in one of
-                  the filter files.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  Server-header taggers are applied to each header on its
-                  own, and as the header isn't modified, each tagger "sees" the original.
-                

-                

-                  Server-header taggers are executed before all other header
-                  actions that modify server headers. Their tags can be used
-                  to control all of the other server-header actions, the
-                  content filters and the crunch actions (redirect and block).
-                

-                

-                  Obviously crunching based on tags created by server-header
-                  taggers doesn't prevent the request from showing up in the
-                  server's log file.
-                

-              

-              

-                Example usage (section):
-              

-              

-                

-                

-                
-                  
-                    
+                
+              

-
+      
+
+      

+        
8.5.33. server-header-tagger

+
+        

+          

+            
Typical use:

+
+            

+              
Enable or disable filters based on the Content-Type
+              header.

+            

+
+            
Effect:

+
+            

+              
Server headers to which this action applies are filtered
+              on-the-fly through the specified regular expression based
+              substitutions, the result is used as tag.

+            

+
+            
Type:

+
+            

+              
Multi-value.

+            

+
+            
Parameter:

+
+            

+              
The name of a server-header tagger, as defined in one of the
+              filter files.

+            

+
+            
Notes:

+
+            

+              
Server-header taggers are applied to each header on its own,
+              and as the header isn't modified, each tagger "sees" the original.

+
+              
Server-header taggers are executed before all other header
+              actions that modify server headers. Their tags can be used to
+              control all of the other server-header actions, the content
+              filters and the crunch actions (redirect and block).

+
+              
Obviously crunching based on tags created by server-header
+              taggers doesn't prevent the request from showing up in the
+              server's log file.

+            

+
+            
Example usage (section):

+
+            

+              
+                
+                  
-                  
-                

+                    
 # Tag every request with the content type declared by the server
 {+server-header-tagger{content-type}}
 /
@@ -5096,365 +4343,314 @@ example.org/instance-that-is-delivered-as-xml-but-is-not
 TAG:^image/
 
 

-                    

-              

-            

-          

+                  

+            

+          

         

-        

-          

-            8.5.34. session-cookies-only
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Allow only temporary "session"
-                  cookies (for the current browser session only).
-                

-              

-              

-                Effect:
-              

-              

-                

-                  Deletes the "expires" field from
-                  "Set-Cookie:" server headers.
-                  Most browsers will not store such cookies permanently and
-                  forget them in between sessions.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Boolean.
-                

-              

-              

-                Parameter:
-              

-              

-                

-                  N/A
-                

-              

-              

-                Notes:
-              

-              

-                

-                  This is less strict than crunch-incoming-cookies
-                  / crunch-outgoing-cookies
-                  and allows you to browse websites that insist or rely on
-                  setting cookies, without compromising your privacy too
-                  badly.
-                

-                

-                  Most browsers will not permanently store cookies that have
-                  been processed by session-cookies-only and will forget about
-                  them between sessions. This makes profiling cookies
-                  useless, but won't break sites which require cookies so
-                  that you can log in for transactions. This is generally
-                  turned on for all sites, and is the recommended setting.
-                

-                

-                  It makes no
-                  sense at all to use session-cookies-only together with crunch-incoming-cookies
-                  or crunch-outgoing-cookies.
-                  If you do, cookies will be plainly killed.
-                

-                

-                  Note that it is up to the browser how it handles such
-                  cookies without an "expires"
-                  field. If you use an exotic browser, you might want to try
-                  it out to be sure.
-                

-                

-                  This setting also has no effect on cookies that may have
-                  been stored previously by the browser before starting Privoxy. These would have to be
-                  removed manually.
-                

-                

-                  Privoxy also uses the content-cookies
-                  filter to block some types of cookies. Content cookies
-                  are not effected by session-cookies-only.
-                

-              

-              

-                Example usage:
-              

-              

-                

-                

-                
-                  
-                    
+                
+              

-
+      
+
+      

+        
8.5.34. session-cookies-only

+
+        

+          

+            
Typical use:

+
+            

+              
Allow only temporary "session"
+              cookies (for the current browser session only).

+            

+
+            
Effect:

+
+            

+              
Deletes the "expires" field from
+              "Set-Cookie:" server headers. Most
+              browsers will not store such cookies permanently and forget
+              them in between sessions.

+            

+
+            
Type:

+
+            

+              
Boolean.

+            

+
+            
Parameter:

+
+            

+              
N/A

+            

+
+            
Notes:

+
+            

+              
This is less strict than crunch-incoming-cookies
+              / crunch-outgoing-cookies
+              and allows you to browse websites that insist or rely on
+              setting cookies, without compromising your privacy too
+              badly.

+
+              
Most browsers will not permanently store cookies that have
+              been processed by session-cookies-only
+              and will forget about them between sessions. This makes
+              profiling cookies useless, but won't break sites which require
+              cookies so that you can log in for transactions. This is
+              generally turned on for all sites, and is the recommended
+              setting.

+
+              
It makes no sense
+              at all to use session-cookies-only together with crunch-incoming-cookies
+              or crunch-outgoing-cookies.
+              If you do, cookies will be plainly killed.

+
+              
Note that it is up to the browser how it handles such
+              cookies without an "expires" field.
+              If you use an exotic browser, you might want to try it out to
+              be sure.

+
+              
This setting also has no effect on cookies that may have
+              been stored previously by the browser before starting
+              Privoxy. These would have to
+              be removed manually.

+
+              
Privoxy also uses the
+              content-cookies
+              filter to block some types of cookies. Content cookies are
+              not effected by session-cookies-only.

+            

+
+            
Example usage:

+
+            

+              
+                
+                  
-                  
-                

+                    
 +session-cookies-only
 

-                    

-              

-            

-          

+                  

+            

+          

         

-        

-          

-            8.5.35. set-image-blocker
-          

-          

-            

-              

-                Typical use:
-              

-              

-                

-                  Choose the replacement for blocked images
-                

-              

-              

-                Effect:
-              

-              

-                

-                  This action alone doesn't do anything noticeable. If both block and handle-as-image
-                  also
-                  apply, i.e. if the request is to be blocked as an image,
-                  then
-                  the parameter of this action decides what will be sent as a
-                  replacement.
-                

-              

-              

-                Type:
-              

-              

-                

-                  Parameterized.
-                

-              

-              

-                Parameter:
-              

-              

-                
    
-                  
  • 
-                    
    
-                      "pattern" to send a built-in
-                      checkerboard pattern image. The image is visually
-                      decent, scales very well, and makes it obvious where
-                      banners were busted.
-                    
    
-                  
    • 
-                  
  • 
-                    
    
-                      "blank" to send a built-in
-                      transparent image. This makes banners disappear
-                      completely, but makes it hard to detect where Privoxy has blocked images
-                      on a given page and complicates troubleshooting if
-                      Privoxy has blocked
-                      innocent images, like navigation icons.
-                    
    
-                  
    • 
-                  
  • 
-                    
    
-                      "target-url" to send a
-                      redirect to target-url. You can redirect
-                      to any image anywhere, even in your local filesystem
-                      via "file:///" URL. (But
-                      note that not all browsers support redirecting to a
-                      local file system).
-                    
    
-                    
    
-                      A good application of redirects is to use special Privoxy-built-in URLs, which
-                      send the built-in images, as target-url. This has the same
-                      visual effect as specifying "blank" or "pattern" in the first place, but
-                      enables your browser to cache the replacement image,
-                      instead of requesting it over and over again.
-                    
    
-                  
    • 
-                

-              

-              

-                Notes:
-              

-              

-                

-                  The URLs for the built-in images are "http://config.privoxy.org/send-banner?type=type", where type is either 
+
+      

+        
8.5.35. set-image-blocker

+
+        

+          

+            
Typical use:

+
+            

+              
Choose the replacement for blocked images

+            

+
+            
Effect:

+
+            

+              
This action alone doesn't do anything noticeable. If
+              both
+              block and handle-as-image
+              also
+              apply, i.e. if the request is to be blocked as an image,
+              then the
+              parameter of this action decides what will be sent as a
+              replacement.

+            

+
+            
Type:

+
+            

+              
Parameterized.

+            

+
+            
Parameter:

+
+            

+              
    
+                
  • 
+                  
    "pattern" to send a built-in
+                  checkerboard pattern image. The image is visually decent,
+                  scales very well, and makes it obvious where banners were
+                  busted.
    
+                
    • 
+
+                
  • 
+                  
    "blank" to send a built-in
+                  transparent image. This makes banners disappear completely,
+                  but makes it hard to detect where Privoxy has blocked images on a given
+                  page and complicates troubleshooting if Privoxy has blocked innocent images,
+                  like navigation icons.
    
+                
    • 
+
+                
  • 
+                  
    "target-url" to send a
+                  redirect to target-url.
+                  You can redirect to any image anywhere, even in your local
+                  filesystem via "file:///" URL.
+                  (But note that not all browsers support redirecting to a
+                  local file system).
    
+
+                  
    A good application of redirects is to use special
+                  Privoxy-built-in URLs,
+                  which send the built-in images, as target-url. This has the same
+                  visual effect as specifying "blank" or "pattern".
-                
    
-                
    
-                  There is a third (advanced) type, called "auto". It is NOT to be used in set-image-blocker, but meant for use from filters. Auto will select the
-                  type of image that would have applied to the referring
-                  page, had it been an image.
-                
    
-              

-              

-                Example usage:
-              

-              

-                

-                  Built-in pattern:
-                

-                

-                

-                
-                  
-                    
+                
+              

-
+                  "QUOTE">"pattern" in the first place, but enables
+                  your browser to cache the replacement image, instead of
+                  requesting it over and over again.

+                
+              
+            
+
+            
Notes:

+
+            

+              
The URLs for the built-in images are "http://config.privoxy.org/send-banner?type=type", where type is either "blank" or "pattern".

+
+              
There is a third (advanced) type, called "auto". It is NOT to be used in set-image-blocker, but meant for use from
+              filters. Auto will select the
+              type of image that would have applied to the referring page,
+              had it been an image.

+            

+
+            
Example usage:

+
+            

+              
Built-in pattern:

+
+              
+                
+                  
-                  
-                

+                    
 +set-image-blocker{pattern}
 

-                    

+                  

 
-                

-                  Redirect to the BSD daemon:
-                

-                

-                

-                
-                  
-                    
+                
+              

-
+              
Redirect to the BSD daemon:

+
+              
+                
+                  
-                  
-                

+                    
 +set-image-blocker{http://www.freebsd.org/gifs/dae_up3.gif}
 

-                    

+                  

 
-                

-                  Redirect to the built-in pattern for better caching:
-                

-                

-                

-                
-                  
-                    
+                
+              

-
+              
Redirect to the built-in pattern for better caching:

+
+              
+                
+                  
-                  
-                

+                    
 +set-image-blocker{http://config.privoxy.org/send-banner?type=pattern}
 

-                    

-              
-            
-          
-        
-        

-          

-            8.5.36. Summary
-          

-          

-            Note that many of these actions have the potential to cause a
-            page to misbehave, possibly even not to display at all. There are
-            many ways a site designer may choose to design his site, and what
-            HTTP header content, and other criteria, he may depend on. There
-            is no way to have hard and fast rules for all sites. See the Appendix for a brief example
-            on troubleshooting actions.
-          

+                  

+            

+          

         

       

-      

-        

-          8.6. Aliases
-        

-        

-          Custom "actions", known to Privoxy as "aliases", can be defined by combining other
-          actions. These can in turn be invoked just like the built-in
-          actions. Currently, an alias name can contain any character except
-          space, tab, "=", "{" and "}", but we strongly recommend
-          that you only use "a" to "z", "0" to "9", "+", and "-". Alias names are not case sensitive, and
-          are not required to start with a "+" or
-          "-" sign, since they are merely
-          textually expanded.
-        

-        

-          Aliases can be used throughout the actions file, but they must be defined in a special
-          section at the top of the file! And there can only be
-          one such section per actions file. Each actions file may have its
-          own alias section, and the aliases defined in it are only visible
-          within that file.
-        

-        

-          There are two main reasons to use aliases: One is to save typing
-          for frequently used combinations of actions, the other one is a
-          gain in flexibility: If you decide once how you want to handle
-          shops by defining an alias called "shop", you can later change your policy on shops in
-          one place,
-          and your changes will take effect everywhere in the actions file
-          where the "shop" alias is used. Calling
-          aliases by their purpose also makes your actions files more
-          readable.
-        

-        

-          Currently, there is one big drawback to using aliases, though:
-          Privoxy's built-in web-based
-          action file editor honors aliases when reading the actions files,
-          but it expands them before writing. So the effects of your aliases
-          are of course preserved, but the aliases themselves are lost when
-          you edit sections that use aliases with it.
-        

-        

-          Now let's define some aliases...
-        

-        

-        

-        
-          
-            
+        
+      

-
+
+      

+        
8.5.36.
+        Summary

+
+        
Note that many of these actions have the potential to cause a page
+        to misbehave, possibly even not to display at all. There are many
+        ways a site designer may choose to design his site, and what HTTP
+        header content, and other criteria, he may depend on. There is no way
+        to have hard and fast rules for all sites. See the Appendix for a brief example on
+        troubleshooting actions.

+      

+    
+
+    

+      
8.6. Aliases

+
+      
Custom "actions", known to Privoxy as "aliases",
+      can be defined by combining other actions. These can in turn be invoked
+      just like the built-in actions. Currently, an alias name can contain
+      any character except space, tab, "=",
+      "{" and "}", but
+      we strongly
+      recommend that you only use "a"
+      to "z", "0" to
+      "9", "+", and
+      "-". Alias names are not case sensitive, and
+      are not required to start with a "+" or
+      "-" sign, since they are merely textually
+      expanded.

+
+      
Aliases can be used throughout the actions file, but they
+      must be defined in a special
+      section at the top of the file! And there can only be one
+      such section per actions file. Each actions file may have its own alias
+      section, and the aliases defined in it are only visible within that
+      file.

+
+      
There are two main reasons to use aliases: One is to save typing for
+      frequently used combinations of actions, the other one is a gain in
+      flexibility: If you decide once how you want to handle shops by
+      defining an alias called "shop", you can
+      later change your policy on shops in one place, and your changes will take effect
+      everywhere in the actions file where the "shop" alias is used. Calling aliases by their purpose
+      also makes your actions files more readable.

+
+      
Currently, there is one big drawback to using aliases, though:
+      Privoxy's built-in web-based action
+      file editor honors aliases when reading the actions files, but it
+      expands them before writing. So the effects of your aliases are of
+      course preserved, but the aliases themselves are lost when you edit
+      sections that use aliases with it.

+
+      
Now let's define some aliases...

+
+      
+        
+          
-          
-        

+            
  # Useful custom aliases we can use later.
  #
  # Note the (required!) section header line and that this section
@@ -5466,11 +4662,9 @@ TAG:^image/
  # (Note that some already use other aliases!)
  #
  +crunch-all-cookies = +crunch-incoming-cookies +crunch-outgoing-cookies
+"actions-file.html#CRUNCH-INCOMING-COOKIES">crunch-incoming-cookies +crunch-outgoing-cookies
  -crunch-all-cookies = -crunch-incoming-cookies -crunch-outgoing-cookies
+"actions-file.html#CRUNCH-INCOMING-COOKIES">crunch-incoming-cookies -crunch-outgoing-cookies
  +block-as-image      = +block{Blocked image.} +handle-as-image
  allow-all-cookies   = -crunch-all-cookies -session-cookies-only -crunch-outgoing-cookies
  c0 = +crunch-all-cookies
  c1 = -crunch-all-cookies
 

-            

+          

 
-        

-          ...and put them to use. These sections would appear in the lower
-          part of an actions file and define exceptions to the default
-          actions (as specified further up for the "/" pattern):
-        

-        

-        

-        
-          
-            
+        
+      

-
+      
...and put them to use. These sections would appear in the lower
+      part of an actions file and define exceptions to the default actions
+      (as specified further up for the "/"
+      pattern):

+
+      
+        
+          
-          
-        

+            
  # These sites are either very complex or very keen on
  # user data and require minimal interference to work:
  #
@@ -5532,71 +4723,63 @@ href="actions-file.html#CRUNCH-OUTGOING-COOKIES">crunch-outgoing-cookies
   .dabs.com
   .overclockers.co.uk
 

-            

+          

 
-        

-          Aliases like "shop" and "fragile" are typically used for "problem" sites that require more than one action to
-          be disabled in order to function properly.
-        

-      

-      

-        

-          8.7. Actions Files Tutorial
-        

-        

-          The above chapters have shown which
-          actions files there are and how they are organized, how actions
-          are specified and applied to URLs, how patterns work, and how to
-          define and use aliases.
-          Now, let's look at an example match-all.action, default.action and user.action file and see how all these pieces come
-          together:
-        

-        

-          

-            8.7.1. match-all.action
-          

-          

-            Remember all actions
-            are disabled when matching starts, so we have to
-            explicitly enable the ones we want.
-          

-          

-            While the match-all.action file only
-            contains a single section, it is probably the most important one.
-            It has only one pattern, "/", but this pattern matches all URLs. Therefore,
-            the set of actions used in this "default" section will be applied to all requests as a start.
-            It can be partly or wholly overridden by other actions files like
-            default.action and user.action, but it will still be largely
-            responsible for your overall browsing experience.
-          

-          

-            Again, at the start of matching, all actions are disabled, so
-            there is no need to disable any actions here. (Remember: a "+" preceding the action name enables the
-            action, a "-" disables!). Also note
-            how this long line has been made more readable by splitting it
-            into multiple lines with line continuation.
-          

-          

-          

-          
-            
-              
+          
+        

-
+      
Aliases like "shop" and "fragile" are typically used for "problem" sites that require more than one action to be
+      disabled in order to function properly.

+    
+
+    

+      
8.7. Actions
+      Files Tutorial

+
+      
The above chapters have shown which
+      actions files there are and how they are organized, how actions are
+      specified and applied to URLs, how patterns work, and how to define
+      and use aliases. Now, let's
+      look at an example match-all.action,
+      default.action and user.action file and see how all these pieces come
+      together:

+
+      

+        
8.7.1.
+        match-all.action

+
+        
Remember all actions
+        are disabled when matching starts, so we have to
+        explicitly enable the ones we want.

+
+        
While the match-all.action file only
+        contains a single section, it is probably the most important one. It
+        has only one pattern, "/", but this pattern matches all URLs. Therefore, the
+        set of actions used in this "default"
+        section will be applied to
+        all requests as a start. It can be partly or wholly
+        overridden by other actions files like default.action and user.action, but it will still be largely responsible
+        for your overall browsing experience.

+
+        
Again, at the start of matching, all actions are disabled, so
+        there is no need to disable any actions here. (Remember: a
+        "+" preceding the action name enables the
+        action, a "-" disables!). Also note how
+        this long line has been made more readable by splitting it into
+        multiple lines with line continuation.

+
+        
+          
+            
-            
-          

+              
 { \
  +change-x-forwarded-for{block} \
@@ -5605,64 +4788,56 @@ href="actions-file.html#CRUNCH-OUTGOING-COOKIES">crunch-outgoing-cookies
 "actions-file.html#SET-IMAGE-BLOCKER">set-image-blocker{pattern} \
 }
 / # Match all URLs
+
 

-              

+            

 
-          

-            The default behavior is now set.
-          

-        

-        

-          

-            8.7.2. default.action
-          

-          

-            If you aren't a developer, there's no need for you to edit the
-            default.action file. It is maintained
-            by the Privoxy developers and if
-            you disagree with some of the sections, you should overrule them
-            in your user.action.
-          

-          

-            Understanding the default.action file
-            can help you with your user.action,
-            though.
-          

-          

-            The first section in this file is a special section for internal
-            use that prevents older Privoxy
-            versions from reading the file:
-          

-          

-          

-          
-            
-              
+          
+        

-
+        
The default behavior is now set.

+      
+
+      

+        
8.7.2.
+        default.action

+
+        
If you aren't a developer, there's no need for you to edit the
+        default.action file. It is maintained by
+        the Privoxy developers and if you
+        disagree with some of the sections, you should overrule them in your
+        user.action.

+
+        
Understanding the default.action file
+        can help you with your user.action,
+        though.

+
+        
The first section in this file is a special section for internal
+        use that prevents older Privoxy
+        versions from reading the file:

+
+        
+          
+            
-            
-          

+              
 ##########################################################################
 # Settings -- Don't change! For internal Privoxy use ONLY.
 ##########################################################################
 {{settings}}
 for-privoxy-version=3.0.11
 

-              

+            

 
-          

-            After that comes the (optional) alias section. We'll use the
-            example section from the above chapter on aliases, that also
-            explains why and how aliases are used:
-          

-          

-          

-          
-            
-              
+          
+        

-
+        
After that comes the (optional) alias section. We'll use the
+        example section from the above chapter on aliases, that also
+        explains why and how aliases are used:

+
+        
+          
+            
-            
-          

+              
 ##########################################################################
 # Aliases
 ##########################################################################
@@ -5672,11 +4847,9 @@ for-privoxy-version=3.0.11
  # (Note that some already use other aliases!)
  #
  +crunch-all-cookies = +crunch-incoming-cookies +crunch-outgoing-cookies
+"actions-file.html#CRUNCH-INCOMING-COOKIES">crunch-incoming-cookies +crunch-outgoing-cookies
  -crunch-all-cookies = -crunch-incoming-cookies -crunch-outgoing-cookies
+"actions-file.html#CRUNCH-INCOMING-COOKIES">crunch-incoming-cookies -crunch-outgoing-cookies
  +block-as-image      = +block{Blocked image.} +handle-as-image
  mercy-for-cookies   = -crunch-all-cookies -session-cookies-only -crunch-outgoing-cookies
  shop        = -crunch-all-cookies -filter{all-popups}
 

-              

+            

 
-          

-            The first of our specialized sections is concerned with "fragile" sites, i.e. sites that require
-            minimum interference, because they are either very complex or
-            very keen on tracking you (and have mechanisms in place that make
-            them unusable for people who avoid being tracked). We will simply
-            use our pre-defined fragile alias
-            instead of stating the list of actions explicitly:
-          

-          

-          

-          
-            
-              
+          
+        

-
+        
The first of our specialized sections is concerned with
+        "fragile" sites, i.e. sites that require
+        minimum interference, because they are either very complex or very
+        keen on tracking you (and have mechanisms in place that make them
+        unusable for people who avoid being tracked). We will simply use our
+        pre-defined fragile alias instead of stating
+        the list of actions explicitly:

+
+        
+          
+            
-            
-          

+              
 ##########################################################################
 # Exceptions for sites that'll break under the default action set:
 ##########################################################################
@@ -5722,21 +4892,18 @@ href="actions-file.html#CRUNCH-OUTGOING-COOKIES">crunch-outgoing-cookies
 .windowsupdate.microsoft.com
 mail.google.com
 

-              

+            

 
-          

-            Shopping sites are not as fragile, but they typically require
-            cookies to log in, and pop-up windows for shopping carts or item
-            details. Again, we'll use a pre-defined alias:
-          

-          

-          

-          
-            
-              
+          
+        

-
+        
Shopping sites are not as fragile, but they typically require
+        cookies to log in, and pop-up windows for shopping carts or item
+        details. Again, we'll use a pre-defined alias:

+
+        
+          
+            
-            
-          

+              
 # Shopping sites:
 #
 { shop }
@@ -5745,23 +4912,20 @@ mail.google.com
 .jungle.com
 .scan.co.uk
 

-              

+            

 
-          

-            The fast-redirects
-            action, which may have been enabled in match-all.action, breaks some sites. So disable
-            it for popular sites where we know it misbehaves:
-          

-          

-          

-          
-            
-              
+          
+        

-
+        
The fast-redirects action,
+        which may have been enabled in match-all.action, breaks some sites. So disable it
+        for popular sites where we know it misbehaves:

+
+        
+          
+            
-            
-          

+              
 { -fast-redirects }
 login.yahoo.com
 edit.*.yahoo.com
@@ -5770,30 +4934,26 @@ edit.*.yahoo.com
 .altavista.com/trans.*urltext=http
 .nytimes.com
 

-              

+            

 
-          

-            It is important that Privoxy
-            knows which URLs belong to images, so that if they are to be
-            blocked, a substitute image can be sent, rather than an HTML
-            page. Contacting the remote site to find out is not an option,
-            since it would destroy the loading time advantage of banner
-            blocking, and it would feed the advertisers information about
-            you. We can mark any URL as an image with the handle-as-image
-            action, and marking all URLs that end in a known image file
-            extension is a good start:
-          

-          

-          

-          
-            
-              
+          
+        

-
+        
It is important that Privoxy
+        knows which URLs belong to images, so that if they are to be blocked,
+        a substitute image can be sent, rather than an HTML page. Contacting
+        the remote site to find out is not an option, since it would destroy
+        the loading time advantage of banner blocking, and it would feed the
+        advertisers information about you. We can mark any URL as an image
+        with the handle-as-image action,
+        and marking all URLs that end in a known image file extension is a
+        good start:

+
+        
+          
+            
-            
-          

+              
 ##########################################################################
 # Images:
 ##########################################################################
@@ -5804,34 +4964,30 @@ edit.*.yahoo.com
 { +handle-as-image }
 /.*\.(gif|jpe?g|png|bmp|ico)$
 

-              

+            

 
-          

-            And then there are known banner sources. They often use scripts
-            to generate the banners, so it won't be visible from the URL that
-            the request is for an image. Hence we block them and mark them as images
-            in one go, with the help of our +block-as-image alias defined above. (We could of
-            course just as well use +block +handle-as-image
-            here.) Remember that the type of the replacement image is chosen
-            by the set-image-blocker
-            action. Since all URLs have matched the default section with its
-            +set-image-blocker{pattern}
-            action before, it still applies and needn't be repeated:
-          

-          

-          

-          
-            
-              
+          
+        

-
+        
And then there are known banner sources. They often use scripts to
+        generate the banners, so it won't be visible from the URL that the
+        request is for an image. Hence we block them and mark them as images in
+        one go, with the help of our +block-as-image
+        alias defined above. (We could of course just as well use +block +handle-as-image here.)
+        Remember that the type of the replacement image is chosen by the
+        set-image-blocker
+        action. Since all URLs have matched the default section with its
+        +set-image-blocker{pattern}
+        action before, it still applies and needn't be repeated:

+
+        
+          
+            
-            
-          

+              
 # Known ad generators:
 #
 { +block-as-image }
@@ -5843,37 +4999,32 @@ ar.atwola.com
 bs*.gsanet.com
 .qkimg.net
 

-              

+            

 
-          

-            One of the most important jobs of Privoxy is to block banners. Many of these
-            can be "blocked" by the filter{banners-by-size}
-            action, which we enabled above, and which deletes the references
-            to banner images from the pages while they are loaded, so the
-            browser doesn't request them anymore, and hence they don't need
-            to be blocked here. But this naturally doesn't catch all banners,
-            and some people choose not to use filters, so we need a
-            comprehensive list of patterns for banner URLs here, and apply
-            the block action to them.
-          

-          

-            First comes many generic patterns, which do most of the work, by
-            matching typical domain and path name components of banners. Then
-            comes a list of individual patterns for specific sites, which is
-            omitted here to keep the example short:
-          

-          

-          

-          
-            
-              
+          
+        

-
+        
One of the most important jobs of Privoxy is to block banners. Many of these can
+        be "blocked" by the filter{banners-by-size} action,
+        which we enabled above, and which deletes the references to banner
+        images from the pages while they are loaded, so the browser doesn't
+        request them anymore, and hence they don't need to be blocked here.
+        But this naturally doesn't catch all banners, and some people choose
+        not to use filters, so we need a comprehensive list of patterns for
+        banner URLs here, and apply the block action to them.

+
+        
First comes many generic patterns, which do most of the work, by
+        matching typical domain and path name components of banners. Then
+        comes a list of individual patterns for specific sites, which is
+        omitted here to keep the example short:

+
+        
+          
+            
-            
-          

+              
 ##########################################################################
 # Block these fine banners:
 ##########################################################################
@@ -5892,55 +5043,47 @@ count*.
 #
 .hitbox.com
 

-              

+            

 
-          

-            It's quite remarkable how many advertisers actually call their
-            banner servers ads.company.com, or call the directory in
-            which the banners are stored simply "banners". So the above generic patterns are
-            surprisingly effective.
-          

-          

-            But being very generic, they necessarily also catch URLs that we
-            don't want to block. The pattern .*ads.
-            e.g. catches "nasty-ads.nasty-corp.com" as
-            intended, but also "downloads.sourcefroge.net" or "adsl.some-provider.net." So here
-            come some well-known exceptions to the +block section above.
-          

-          

-            Note that these are exceptions to exceptions from the default!
-            Consider the URL "downloads.sourcefroge.net": Initially, all
-            actions are deactivated, so it wouldn't get blocked. Then comes
-            the defaults section, which matches the URL, but just deactivates
-            the block action once again. Then
-            it matches .*ads., an exception to the
-            general non-blocking policy, and suddenly +block applies. And now,
-            it'll match .*loads., where -block
-            applies, so (unless it matches again further down) it ends up with no block
-            action applying.
-          

-          

-          

-          
-            
-              
+          
+        

-
+        
It's quite remarkable how many advertisers actually call their
+        banner servers ads.company.com,
+        or call the directory in which the banners are stored simply
+        "banners". So the above generic patterns
+        are surprisingly effective.

+
+        
But being very generic, they necessarily also catch URLs that we
+        don't want to block. The pattern .*ads. e.g.
+        catches "nasty-ads.nasty-corp.com" as intended, but
+        also "downloads.sourcefroge.net" or "adsl.some-provider.net." So here come
+        some well-known exceptions to the +block section above.

+
+        
Note that these are exceptions to exceptions from the default!
+        Consider the URL "downloads.sourcefroge.net": Initially, all actions
+        are deactivated, so it wouldn't get blocked. Then comes the defaults
+        section, which matches the URL, but just deactivates the block action
+        once again. Then it matches .*ads., an
+        exception to the general non-blocking policy, and suddenly +block applies.
+        And now, it'll match .*loads., where
+        -block
+        applies, so (unless it matches again further down) it ends up with no
+        block
+        action applying.

+
+        
+          
+            
-            
-          

+              
 ##########################################################################
 # Save some innocent victims of the above generic block patterns:
 ##########################################################################
@@ -5964,24 +5107,21 @@ ad[ud]*.   # (adult.* and add.*)
 www.globalintersec.com/adv # (adv = advanced)
 www.ugu.com/sui/ugu/adv
 

-              

+            

 
-          

-            Filtering source code can have nasty side effects, so make an
-            exception for our friends at sourceforge.net, and all paths with
-            "cvs" in them. Note that -filter
-            disables all filters in one fell swoop!
-          

-          

-          

-          
-            
-              
+          
+        

-
+        
Filtering source code can have nasty side effects, so make an
+        exception for our friends at sourceforge.net, and all paths with
+        "cvs" in them. Note that -filter
+        disables all
+        filters in one fell swoop!

+
+        
+          
+            
-            
-          

+              
 # Don't filter code!
 #
 { -filter }
@@ -5991,65 +5131,56 @@ developer.
 wiki.
 .sourceforge.net
 

-              

+            

 
-          

-            The actual default.action is of course
-            much more comprehensive, but we hope this example made clear how
-            it works.
-          

-        

-        

-          

-            8.7.3. user.action
-          

-          

-            So far we are painting with a broad brush by setting general
-            policies, which would be a reasonable starting point for many
-            people. Now, you might want to be more specific and have
-            customized rules that are more suitable to your personal habits
-            and preferences. These would be for narrowly defined situations
-            like your ISP or your bank, and should be placed in user.action, which is parsed after all other
-            actions files and hence has the last word, over-riding any
-            previously defined actions. user.action
-            is also a safe place for your personal settings,
-            since default.action is actively
-            maintained by the Privoxy
-            developers and you'll probably want to install updated versions
-            from time to time.
-          

-          

-            So let's look at a few examples of things that one might
-            typically do in user.action:
-          

-          

-          

-          
-            
-              
+          
+        

-
+        
The actual default.action is of course
+        much more comprehensive, but we hope this example made clear how it
+        works.

+      
+
+      

+        
8.7.3.
+        user.action

+
+        
So far we are painting with a broad brush by setting general
+        policies, which would be a reasonable starting point for many people.
+        Now, you might want to be more specific and have customized rules
+        that are more suitable to your personal habits and preferences. These
+        would be for narrowly defined situations like your ISP or your bank,
+        and should be placed in user.action, which
+        is parsed after all other actions files and hence has the last word,
+        over-riding any previously defined actions. user.action is also a safe place for your
+        personal settings, since default.action is
+        actively maintained by the Privoxy
+        developers and you'll probably want to install updated versions from
+        time to time.

+
+        
So let's look at a few examples of things that one might typically
+        do in user.action:

+
+        
+          
+            
-            
-          

+              
 # My user.action file. <fred@example.com>
 

-              

+            

 
-          

-            As aliases are local to
-            the actions file that they are defined in, you can't use the ones
-            from default.action, unless you repeat
-            them here:
-          

-          

-          

-          
-            
-              
+          
+        

-
+        
As aliases are local to
+        the actions file that they are defined in, you can't use the ones
+        from default.action, unless you repeat them
+        here:

+
+        
+          
+            
-            
-          

+              
 # Aliases are local to the file they are defined in.
 # (Re-)define aliases for this file:
 #
@@ -6078,65 +5209,54 @@ allow-ads   = -block -filter{banners-by-size} -filter{banners-by-link}
 # Alias for specific file types that are text, but might have conflicting
 # MIME types. We want the browser to force these to be text documents.
 handle-as-text = -filter +-content-type-overwrite{text/plain} +-force-text-mode -hide-content-disposition
+"actions-file.html#CONTENT-TYPE-OVERWRITE">content-type-overwrite{text/plain} +-force-text-mode -hide-content-disposition
 

-              

-          

-
-          

-            Say you have accounts on some sites that you visit regularly, and
-            you don't want to have to log in manually each time. So you'd
-            like to allow persistent cookies for these sites. The allow-all-cookies alias defined above does exactly
-            that, i.e. it disables crunching of cookies in any direction, and
-            the processing of cookies to make them only temporary.
-          

-          

-          

-          
-            
-              
+          
+        

-
+            

+
+        
Say you have accounts on some sites that you visit regularly, and
+        you don't want to have to log in manually each time. So you'd like to
+        allow persistent cookies for these sites. The allow-all-cookies alias defined above does exactly
+        that, i.e. it disables crunching of cookies in any direction, and the
+        processing of cookies to make them only temporary.

+
+        
+          
+            
-            
-          

+              
 { allow-all-cookies }
  sourceforge.net
  .yahoo.com
  .msdn.microsoft.com
  .redhat.com
 

-              

+            

 
-          

-            Your bank is allergic to some filter, but you don't know which,
-            so you disable them all:
-          

-          

-          

-          
-            
-              
+          
+        

-
+        
Your bank is allergic to some filter, but you don't know which, so
+        you disable them all:

+
+        
+          
+            
-            
-          

+              
 { -filter }
  .your-home-banking-site.com
 

-              

+            

 
-          

-            Some file types you may not want to filter for various reasons:
-          

-          

-          

-          
-            
-              
+          
+        

-
+        
Some file types you may not want to filter for various
+        reasons:

+
+        
+          
+            
-            
-          

+              
 # Technical documentation is likely to contain strings that might
 # erroneously get altered by the JavaScript-oriented filters:
 #
@@ -6148,215 +5268,196 @@ handle-as-text = -filter +-
-              

+            

 
-          

-            Example of a simple block
-            action. Say you've seen an ad on your favourite page on
-            example.com that you want to get rid of. You have right-clicked
-            the image, selected "copy image
-            location" and pasted the URL below while removing the
-            leading http://, into a { +block{} }
-            section. Note that { +handle-as-image }
-            need not be specified, since all URLs ending in .gif will be tagged as images by the general rules
-            as set in default.action anyway:
-          

-          

-          

-          
-            
-              
+          
+        

-
+        
Example of a simple block
+        action. Say you've seen an ad on your favourite page on example.com
+        that you want to get rid of. You have right-clicked the image,
+        selected "copy image location" and pasted
+        the URL below while removing the leading http://, into a { +block{} } section. Note that {
+        +handle-as-image } need not be specified, since all URLs ending
+        in .gif will be tagged as images by the
+        general rules as set in default.action anyway:

+
+        
+          
+            
-            
-          

+              
 { +block{Nasty ads.} }
  www.example.com/nasty-ads/sponsor\.gif
  another.example.net/more/junk/here/
 

-              

+            

 
-          

-            The URLs of dynamically generated banners, especially from large
-            banner farms, often don't use the well-known image file name
-            extensions, which makes it impossible for Privoxy to guess the file type just by
-            looking at the URL. You can use the +block-as-image alias defined above for these
-            cases. Note that objects which match this rule but then turn out
-            NOT to be an image are typically rendered as a "broken image" icon by the browser. Use
-            cautiously.
-          

-          

-          

-          
-            
-              
+          
+        

-
+        
The URLs of dynamically generated banners, especially from large
+        banner farms, often don't use the well-known image file name
+        extensions, which makes it impossible for Privoxy to guess the file type just by looking
+        at the URL. You can use the +block-as-image
+        alias defined above for these cases. Note that objects which match
+        this rule but then turn out NOT to be an image are typically rendered
+        as a "broken image" icon by the browser.
+        Use cautiously.

+
+        
+          
+            
-            
-          

+              
 { +block-as-image }
  .doubleclick.net
  .fastclick.net
  /Realmedia/ads/
  ar.atwola.com/
 

-              

+            

 
-          

-            Now you noticed that the default configuration breaks Forbes
-            Magazine, but you were too lazy to find out which action is the
-            culprit, and you were again too lazy to give feedback, so you just used the fragile alias on the site, and -- whoa! -- it worked. The
-            fragile aliases disables those actions
-            that are most likely to break a site. Also, good for testing
-            purposes to see if it is Privoxy
-            that is causing the problem or not. We later find other regular
-            sites that misbehave, and add those to our personalized list of
-            troublemakers:
-          

-          
-            
-              
+          
+        

-
+        
Now you noticed that the default configuration breaks Forbes
+        Magazine, but you were too lazy to find out which action is the
+        culprit, and you were again too lazy to give feedback, so you just used the fragile alias on the site, and -- whoa! -- it worked. The
+        fragile aliases disables those actions that
+        are most likely to break a site. Also, good for testing purposes to
+        see if it is Privoxy that is causing
+        the problem or not. We later find other regular sites that misbehave,
+        and add those to our personalized list of troublemakers:

+
+        
+          
+            
-            
-          

+              
 { fragile }
  .forbes.com
  webmail.example.com
  .mybank.com
 

-              

+            

 
-          

-            You like the "fun" text replacements
-            in default.filter, but it is disabled
-            in the distributed actions file. So you'd like to turn it on in
-            your private, update-safe config, once and for all:
-          

-          
-            
-              
+          
+        

-
+        
You like the "fun" text replacements in
+        default.filter, but it is disabled in the
+        distributed actions file. So you'd like to turn it on in your
+        private, update-safe config, once and for all:

+
+        
+          
+            
-            
-          

+              
 { +filter{fun} }
  / # For ALL sites!
 

-              

+            

 
-          

-            Note that the above is not really a good idea: There are
-            exceptions to the filters in default.action for things that really shouldn't
-            be filtered, like code on CVS->Web interfaces. Since user.action has the last word, these
-            exceptions won't be valid for the "fun" filtering specified here.
-          

-          

-            You might also worry about how your favourite free websites are
-            funded, and find that they rely on displaying banner
-            advertisements to survive. So you might want to specifically
-            allow banners for those sites that you feel provide value to you:
-          

-          
-            
-              
+          
+        

-
+        
Note that the above is not really a good idea: There are
+        exceptions to the filters in default.action
+        for things that really shouldn't be filtered, like code on
+        CVS->Web interfaces. Since user.action
+        has the last word, these exceptions won't be valid for the
+        "fun" filtering specified here.

+
+        
You might also worry about how your favourite free websites are
+        funded, and find that they rely on displaying banner advertisements
+        to survive. So you might want to specifically allow banners for those
+        sites that you feel provide value to you:

+
+        
+          
+            
-            
-          

+              
 { allow-ads }
  .sourceforge.net
  .slashdot.org
  .osdn.net
 

-              

+            

 
-          

-            Note that allow-ads has been aliased to
-            -block, -filter{banners-by-size},
-            and -filter{banners-by-link}
-            above.
-          

-          

-            Invoke another alias here to force an over-ride of the MIME type
-            application/x-sh which typically would
-            open a download type dialog. In my case, I want to look at the
-            shell script, and then I can save it should I choose to.
-          

-          
-            
-              
+          
+        

-
+        
Note that allow-ads has been aliased to
+        -block, -filter{banners-by-size},
+        and -filter{banners-by-link}
+        above.

+
+        
Invoke another alias here to force an over-ride of the MIME type
+        application/x-sh which typically would open
+        a download type dialog. In my case, I want to look at the shell
+        script, and then I can save it should I choose to.

+
+        
+          
+            
-            
-          

+              
 { handle-as-text }
  /.*\.sh$
 

-              

+            

 
-          

-            user.action is generally the best place
-            to define exceptions and additions to the default policies of default.action. Some actions are safe to
-            have their default policies set here though. So let's set a
-            default policy to have a "blank" image
-            as opposed to the checkerboard pattern for ALL sites. "/" of course matches all URL paths and patterns:
-          

-          
-            
-              
+          
+        

-
+        
user.action is generally the best place
+        to define exceptions and additions to the default policies of
+        default.action. Some actions are safe to
+        have their default policies set here though. So let's set a default
+        policy to have a "blank" image as opposed
+        to the checkerboard pattern for ALL sites. "/" of
+        course matches all URL paths and patterns:

+
+        
+          
+            
-            
-          

+              
 { +set-image-blocker{blank} }
 / # ALL sites
 

-              

-        
+            

       

     

-    

-      

-      
-        
-          
-          
-          
-        
-        
-          
-          
-          
-        
-      

-            Prev
-          
-            Home
-          
-            Next
-          

-            The Main Configuration File
-          
-             
-          
-            Filter Files
-          

-    

-  
-
+  

+
+  

+    

+
+    
+      
+        
+
+        
 
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
PrevHomeNext
The Main Configuration
+        File Filter Files

+  

+
+
diff --git a/doc/webserver/user-manual/appendix.html b/doc/webserver/user-manual/appendix.html
index 38f4c8b0..a6c27919 100644
--- a/doc/webserver/user-manual/appendix.html
+++ b/doc/webserver/user-manual/appendix.html
@@ -1,677 +1,586 @@
-
+
+
 
-  
-    
-      Appendix
-    
-    
-    
-    
-    
-    
-    
-  
-  
-    

-      
-        
-          
-        
-        
-          
-          
-          
-        
+
+  Appendix
+  
+  
+  
+  
+  
+  
+
+
+
+  

+    

-            Privoxy 3.0.26 User Manual
-          

-            Prev
-          
-          
-             
-          

+      
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
Privoxy 3.0.26 User Manual
Prev 

+    

+  

+
+  

+    
14. Appendix

+
+    

+      
14.1. Regular
+      Expressions

+
+      
Privoxy uses Perl-style
+      "regular expressions" in its actions files and filter file, through the PCRE and PCRS libraries.

+
+      
If you are reading this, you probably don't understand what
+      "regular expressions" are, or what they can
+      do. So this will be a very brief introduction only. A full explanation
+      would require a book ;-)

+
+      
Regular expressions provide a language to describe patterns that can
+      be run against strings of characters (letter, numbers, etc), to see if
+      they match the string or not. The patterns are themselves (sometimes
+      complex) strings of literal characters, combined with wild-cards, and
+      other special characters, called meta-characters. The "meta-characters" have special meanings and are used to
+      build complex patterns to be matched against. Perl Compatible Regular
+      Expressions are an especially convenient "dialect" of the regular expression language.

+
+      
To make a simple analogy, we do something similar when we use
+      wild-card characters when listing files with the dir command in DOS. *.* matches
+      all filenames. The "special" character here
+      is the asterisk which matches any and all characters. We can be more
+      specific and use ? to match just individual
+      characters. So "dir file?.text" would match
+      "file1.txt", "file2.txt", etc. We are pattern matching, using a
+      similar technique to "regular
+      expressions"!

+
+      
Regular expressions do essentially the same thing, but are much,
+      much more powerful. There are many more "special
+      characters" and ways of building complex patterns however. Let's
+      look at a few of the common ones, and then some examples:

+
+      
+        
+          
+            
+          
+        
. -
+            Matches any single character, e.g. "a", "A", "4", ":", or
+            "@".

       

-      

-    

-    

-      

-        14. Appendix
-      

-      

-        

-          14.1. Regular Expressions
-        

-        

-          Privoxy uses Perl-style "regular expressions" in its actions files and filter file, through the PCRE and PCRS libraries.
-        

-        

-          If you are reading this, you probably don't understand what "regular expressions" are, or what they can
-          do. So this will be a very brief introduction only. A full
-          explanation would require a book ;-)
-        

-        

-          Regular expressions provide a language to describe patterns that
-          can be run against strings of characters (letter, numbers, etc), to
-          see if they match the string or not. The patterns are themselves
-          (sometimes complex) strings of literal characters, combined with
-          wild-cards, and other special characters, called meta-characters.
-          The "meta-characters" have special
-          meanings and are used to build complex patterns to be matched
-          against. Perl Compatible Regular Expressions are an especially
-          convenient "dialect" of the regular
-          expression language.
-        

-        

-          To make a simple analogy, we do something similar when we use
-          wild-card characters when listing files with the dir command in DOS. *.*
-          matches all filenames. The "special"
-          character here is the asterisk which matches any and all
-          characters. We can be more specific and use ? to match just individual characters. So "dir file?.text" would match "file1.txt", "file2.txt",
-          etc. We are pattern matching, using a similar technique to "regular expressions"!
-        

-        

-          Regular expressions do essentially the same thing, but are much,
-          much more powerful. There are many more "special characters" and ways of building complex
-          patterns however. Let's look at a few of the common ones, and then
-          some examples:
-        

-        
-          
-            
-              
-            
-          
-        

-                . -
-                Matches any single character, e.g. "a", "A", "4", ":", or
-                "@".
-              

-
-        
-          
-            
-              
-            
-          
-        

-                ? - The
-                preceding character or expression is matched ZERO or ONE
-                times. Either/or.
-              

-
-        
-          
-            
-              
-            
-          
-        

-                + - The
-                preceding character or expression is matched ONE or MORE
-                times.
-              

-
-        
-          
-            
-              
-            
-          
-        

-                * - The
-                preceding character or expression is matched ZERO or MORE
-                times.
-              

-
-        
-          
-            
-              
-            
-          
-        

-                \ - The
-                "escape" character denotes that
-                the following character should be taken literally. This is
-                used where one of the special characters (e.g. ".") needs to be taken literally and not as a
-                special meta-character. Example: "example\.com", makes sure the period is
-                recognized only as a period (and not expanded to its
-                meta-character meaning of any single character).
-              

-
-        
-          
-            
-              
-            
-          
-        

-                [ ] -
-                Characters enclosed in brackets will be matched if any of the
-                enclosed characters are encountered. For instance, "[0-9]" matches any numeric digit (zero
-                through nine). As an example, we can combine this with "+" to match any digit one of more
-                times: "[0-9]+".
-              

-
-        
-          
-            
-              
-            
-          
-        

-                ( ) -
-                parentheses are used to group a sub-expression, or multiple
-                sub-expressions.
-              

-
-        
-          
-            
-              
-            
-          
-        

-                | - The
-                "bar" character works like an
-                "or" conditional statement. A
-                match is successful if the sub-expression on either side of
-                "|" matches. As an example: "/(this|that) example/" uses grouping
-                and the bar character and would match either "this example" or "that
-                example", and nothing else.
-              

-
-        

-          These are just some of the ones you are likely to use when matching
-          URLs with Privoxy, and is a long
-          way from a definitive list. This is enough to get us started with a
-          few simple examples which may be more illuminating:
-        

-        

-          /.*/banners/.* - A simple example that
-          uses the common combination of "." and
-          "*" to denote any character, zero or
-          more times. In other words, any string at all. So we start with a
-          literal forward slash, then our regular expression pattern (".*") another literal forward slash, the
-          string "banners", another forward slash,
-          and lastly another ".*". We are building
-          a directory path here. This will match any file with the path that
-          has a directory named "banners" in it.
-          The ".*" matches any characters, and
-          this could conceivably be more forward slashes, so it might expand
-          into a much longer looking path. For example, this could match:
-          "/eye/hate/spammers/banners/annoy_me_please.gif", or
-          just "/banners/annoying.html", or almost
-          an infinite number of other possible combinations, just so it has
-          "banners" in the path somewhere.
-        

-        

-          And now something a little more complex:
-        

-        

-          /.*/adv((er)?ts?|ertis(ing|ements?))?/ -
-          We have several literal forward slashes again ("/"), so we are building another expression that is
-          a file path statement. We have another ".*", so we are matching against any conceivable
-          sub-path, just so it matches our expression. The only true literal
-          that must
-          match our pattern is adv, together with the forward slashes. What
-          comes after the "adv" string is the
-          interesting part.
-        

-        

-          Remember the "?" means the preceding
-          expression (either a literal character or anything grouped with
-          "(...)" in this case) can exist or not,
-          since this means either zero or one match. So "((er)?ts?|ertis(ing|ements?))" is optional, as are
-          the individual sub-expressions: "(er)",
-          "(ing|ements?)", and the "s". The "|" means "or". We have two of those. For instance,
-          "(ing|ements?)", can expand to match
-          either "ing" OR "ements?". What is being done here, is an attempt at
-          matching as many variations of "advertisement", and similar, as possible. So this
-          would expand to match just "adv", or
-          "advert", or "adverts", or "advertising", or "advertisement", or "advertisements". You get the idea. But it would not
-          match "advertizements" (with a "z"). We could fix that by changing our
-          regular expression to: "/.*/adv((er)?ts?|erti(s|z)(ing|ements?))?/", which
-          would then match either spelling.
-        

-        

-          /.*/advert[0-9]+\.(gif|jpe?g) - Again
-          another path statement with forward slashes. Anything in the square
-          brackets "[ ]" can be matched. This is
-          using "0-9" as a shorthand expression to
-          mean any digit one through nine. It is the same as saying "0123456789". So any digit matches. The "+" means one or more of the preceding
-          expression must be included. The preceding expression here is what
-          is in the square brackets -- in this case, any digit one through
-          nine. Then, at the end, we have a grouping: "(gif|jpe?g)". This includes a "|", so this needs to match the expression on either
-          side of that bar character also. A simple "gif" on one side, and the other side will in turn
-          match either "jpeg" or "jpg", since the "?"
-          means the letter "e" is optional and can
-          be matched once or not at all. So we are building an expression
-          here to match image GIF or JPEG type image file. It must include
-          the literal string "advert", then one or
-          more digits, and a "." (which is now a
-          literal, and not a special character, since it is escaped with
-          "\"), and lastly either "gif", or "jpeg", or
-          "jpg". Some possible matches would
-          include: "//advert1.jpg", "/nasty/ads/advert1234.gif", "/banners/from/hell/advert99.jpg". It would not
-          match "advert1.gif" (no leading slash),
-          or "/adverts232.jpg" (the expression
-          does not include an "s"), or "/advert1.jsp" ("jsp" is not in the expression anywhere).
-        

-        

-          We are barely scratching the surface of regular expressions here so
-          that you can understand the default Privoxy configuration files, and maybe use
-          this knowledge to customize your own installation. There is much,
-          much more that can be done with regular expressions. Now that you
-          know enough to get started, you can learn more on your own :/
-        

-        

-          More reading on Perl Compatible Regular expressions: http://perldoc.perl.org/perlre.html
-        

-        

-          For information on regular expression based substitutions and their
-          applications in filters, please see the filter file tutorial in this manual.
-        

-      

-      

-        

-          14.2. Privoxy's Internal Pages
-        

-        

-          Since Privoxy proxies each
-          requested web page, it is easy for Privoxy to trap certain special URLs. In this
-          way, we can talk directly to Privoxy, and see how it is configured, see how
-          our rules are being applied, change these rules and other
-          configuration options, and even turn Privoxy's filtering off, all with a web
-          browser.
-        

-        

-          The URLs listed below are the special ones that allow direct access
-          to Privoxy. Of course, Privoxy must be running to access these.
-          If not, you will get a friendly error message. Internet access is
-          not necessary either.
-        

-        

-        

-        
-      

-      

-        

-          14.3. Chain of Events
-        

-        

-          Let's take a quick look at how some of Privoxy's core features are triggered, and the
-          ensuing sequence of events when a web page is requested by your
-          browser:
-        

-        

-        

-        
    
-          
  • 
-            
    
-              First, your web browser requests a web page. The browser knows
-              to send the request to Privoxy, which will in turn, relay the
-              request to the remote web server after passing the following
-              tests:
-            
    
-          
    • 
-          
  • 
-            
    
-              Privoxy traps any request for
-              its own internal CGI pages (e.g http://p.p/) and sends the CGI page back to the
-              browser.
-            
    
-          
    • 
-          
  • 
-            
    
-              Next, Privoxy checks to see if
-              the URL matches any "+block" patterns. If so, the URL is
-              then blocked, and the remote web server will not be contacted.
-              "+handle-as-image" and "+handle-as-empty-document" are then
-              checked, and if there is no match, an HTML "BLOCKED" page is sent back to the browser.
-              Otherwise, if it does match, an image is returned for the
-              former, and an empty text document for the latter. The type of
-              image would depend on the setting of "+set-image-blocker" (blank, checkerboard
-              pattern, or an HTTP redirect to an image elsewhere).
-            
    
-          
    • 
-          
  • 
-            
    
-              Untrusted URLs are blocked. If URLs are being added to the trust file, then that is done.
-            
    
-          
    • 
-          
  • 
-            
    
-              If the URL pattern matches the "+fast-redirects" action, it is then
-              processed. Unwanted parts of the requested URL are stripped.
-            
    
-          
    • 
-          
  • 
-            
    
-              Now the rest of the client browser's request headers are
-              processed. If any of these match any of the relevant actions
-              (e.g. "+hide-user-agent", etc.), headers are
-              suppressed or forged as determined by these actions and their
-              parameters.
-            
    
-          
    • 
-          
  • 
-            
    
-              Now the web server starts sending its response back (i.e.
-              typically a web page).
-            
    
-          
    • 
-          
  • 
-            
    
-              First, the server headers are read and processed to determine,
-              among other things, the MIME type (document type) and encoding.
-              The headers are then filtered as determined by the "+crunch-incoming-cookies", "+session-cookies-only", and "+downgrade-http-version" actions.
-            
    
-          
    • 
-          
  • 
-            
    
-              If any "+filter" action or "+deanimate-gifs" action applies (and the
-              document type fits the action), the rest of the page is read
-              into memory (up to a configurable limit). Then the filter rules
-              (from default.filter and any other
-              filter files) are processed against the buffered content.
-              Filters are applied in the order they are specified in one of
-              the filter files. Animated GIFs, if present, are reduced to
-              either the first or last frame, depending on the action
-              setting.The entire page, which is now filtered, is then sent by
-              Privoxy back to your browser.
-            
    
-            
    
-              If neither a "+filter" action or "+deanimate-gifs" matches, then Privoxy passes the raw data through to the
-              client browser as it becomes available.
-            
    
-          
    • 
-          
  • 
-            
    
-              As the browser receives the now (possibly filtered) page
-              content, it reads and then requests any URLs that may be
-              embedded within the page source, e.g. ad images, stylesheets,
-              JavaScript, other HTML documents (e.g. frames), sounds, etc.
-              For each of these objects, the browser issues a separate
-              request (this is easily viewable in Privoxy's logs). And each such request is
-              in turn processed just as above. Note that a complex web page
-              will have many, many such embedded URLs. If these secondary
-              requests are to a different server, then quite possibly a very
-              differing set of actions is triggered.
-            
    
-          
    • 
-        

-
-        

-          NOTE: This is somewhat of a simplistic overview of what happens
-          with each URL request. For the sake of brevity and simplicity, we
-          have focused on Privoxy's core
-          features only.
-        

-      

-      

-        

-          14.4. Troubleshooting: Anatomy of an
-          Action
-        

-        

-          The way Privoxy applies actions and filters to any given URL can be
-          complex, and not always so easy to understand what is happening.
-          And sometimes we need to be able to see just what Privoxy is doing. Especially, if something
-          Privoxy is doing is causing us a
-          problem inadvertently. It can be a little daunting to look at the
-          actions and filters files themselves, since they tend to be filled
-          with regular expressions whose
-          consequences are not always so obvious.
-        

-        

-          One quick test to see if Privoxy
-          is causing a problem or not, is to disable it temporarily. This
-          should be the first troubleshooting step (be sure to flush caches
-          afterward!). Looking at the logs is a good idea too. (Note that
-          both the toggle feature and logging are enabled via config file settings, and may need to be turned
-          "on".)
-        

-        

-          Another easy troubleshooting step to try is if you have done any
-          customization of your installation, revert back to the installed
-          defaults and see if that helps. There are times the developers get
-          complaints about one thing or another, and the problem is more
-          related to a customized configuration issue.
-        

-        

-          Privoxy also provides the http://config.privoxy.org/show-url-info page that can
-          show us very specifically how actions are being applied to any given URL.
-          This is a big help for troubleshooting.
-        

-        

-          First, enter one URL (or partial URL) at the prompt, and then Privoxy will tell us how the current
-          configuration will handle it. This will not help with filtering
-          effects (i.e. the "+filter" action) from one of the filter files
-          since this is handled very differently and not so easy to trap! It
-          also will not tell you about any other URLs that may be embedded
-          within the URL you are testing. For instance, images such as ads
-          are expressed as URLs within the raw page source of HTML pages. So
-          you will only get info for the actual URL that is pasted into the
-          prompt area -- not any sub-URLs. If you want to know about embedded
-          URLs like ads, you will have to dig those out of the HTML source.
-          Use your browser's "View Page Source"
-          option for this. Or right click on the ad, and grab the URL.
-        

-        

-          Let's try an example, google.com, and look at it one section at a time in a
-          sample configuration (your real configuration may vary):
-        

-        

-        

-        
+
+      

+        
-            
+          
+        
+      

           

-
+            
? - The
+            preceding character or expression is matched ZERO or ONE times.
+            Either/or.

+
+      
+        
+          
+            
+          
+        
+      
+ - The
+            preceding character or expression is matched ONE or MORE
+            times.

+
+      
+        
+          
+            
+          
+        
+      
* - The
+            preceding character or expression is matched ZERO or MORE
+            times.

+
+      
+        
+          
+            
+          
+        
+      
\ - The
+            "escape" character denotes that the
+            following character should be taken literally. This is used where
+            one of the special characters (e.g. ".") needs to be taken literally and not as a
+            special meta-character. Example: "example\.com", makes sure the period is
+            recognized only as a period (and not expanded to its
+            meta-character meaning of any single character).

+
+      
+        
+          
+            
+          
+        
+      
[ ] -
+            Characters enclosed in brackets will be matched if any of the
+            enclosed characters are encountered. For instance, "[0-9]" matches any numeric digit (zero through
+            nine). As an example, we can combine this with "+" to match any digit one of more times:
+            "[0-9]+".

+
+      
+        
+          
+            
+          
+        
+      
( ) -
+            parentheses are used to group a sub-expression, or multiple
+            sub-expressions.

+
+      
+        
+          
+            
+          
+        
+      
| - The
+            "bar" character works like an
+            "or" conditional statement. A match is
+            successful if the sub-expression on either side of "|" matches. As an example: "/(this|that) example/" uses grouping and the bar
+            character and would match either "this
+            example" or "that example", and
+            nothing else.

+
+      
These are just some of the ones you are likely to use when matching
+      URLs with Privoxy, and is a long way
+      from a definitive list. This is enough to get us started with a few
+      simple examples which may be more illuminating:

+
+      
/.*/banners/.* - A simple example that uses
+      the common combination of "." and
+      "*" to denote any character, zero or more
+      times. In other words, any string at all. So we start with a literal
+      forward slash, then our regular expression pattern (".*") another literal forward slash, the string
+      "banners", another forward slash, and lastly
+      another ".*". We are building a directory
+      path here. This will match any file with the path that has a directory
+      named "banners" in it. The ".*" matches any characters, and this could conceivably
+      be more forward slashes, so it might expand into a much longer looking
+      path. For example, this could match: "/eye/hate/spammers/banners/annoy_me_please.gif", or
+      just "/banners/annoying.html", or almost an
+      infinite number of other possible combinations, just so it has
+      "banners" in the path somewhere.

+
+      
And now something a little more complex:

+
+      
/.*/adv((er)?ts?|ertis(ing|ements?))?/ - We
+      have several literal forward slashes again ("/"), so we are building another expression that is a
+      file path statement. We have another ".*",
+      so we are matching against any conceivable sub-path, just so it matches
+      our expression. The only true literal that must match our pattern is
+      adv, together with the forward
+      slashes. What comes after the "adv" string
+      is the interesting part.

+
+      
Remember the "?" means the preceding
+      expression (either a literal character or anything grouped with
+      "(...)" in this case) can exist or not,
+      since this means either zero or one match. So "((er)?ts?|ertis(ing|ements?))" is optional, as are the
+      individual sub-expressions: "(er)",
+      "(ing|ements?)", and the "s". The "|" means
+      "or". We have two of those. For instance,
+      "(ing|ements?)", can expand to match either
+      "ing" OR "ements?". What is
+      being done here, is an attempt at matching as many variations of
+      "advertisement", and similar, as possible.
+      So this would expand to match just "adv", or
+      "advert", or "adverts", or "advertising",
+      or "advertisement", or "advertisements". You get the idea. But it would not
+      match "advertizements" (with a "z"). We could fix that by changing our regular
+      expression to: "/.*/adv((er)?ts?|erti(s|z)(ing|ements?))?/", which
+      would then match either spelling.

+
+      
/.*/advert[0-9]+\.(gif|jpe?g) - Again another
+      path statement with forward slashes. Anything in the square brackets
+      "[ ]" can be matched. This is using
+      "0-9" as a shorthand expression to mean any
+      digit one through nine. It is the same as saying "0123456789". So any digit matches. The "+" means one or more of the preceding expression must
+      be included. The preceding expression here is what is in the square
+      brackets -- in this case, any digit one through nine. Then, at the end,
+      we have a grouping: "(gif|jpe?g)". This
+      includes a "|", so this needs to match the
+      expression on either side of that bar character also. A simple
+      "gif" on one side, and the other side will
+      in turn match either "jpeg" or "jpg", since the "?" means
+      the letter "e" is optional and can be
+      matched once or not at all. So we are building an expression here to
+      match image GIF or JPEG type image file. It must include the literal
+      string "advert", then one or more digits,
+      and a "." (which is now a literal, and not a
+      special character, since it is escaped with "\"), and lastly either "gif", or "jpeg", or
+      "jpg". Some possible matches would include:
+      "//advert1.jpg", "/nasty/ads/advert1234.gif", "/banners/from/hell/advert99.jpg". It would not match
+      "advert1.gif" (no leading slash), or
+      "/adverts232.jpg" (the expression does not
+      include an "s"), or "/advert1.jsp" ("jsp" is not
+      in the expression anywhere).

+
+      
We are barely scratching the surface of regular expressions here so
+      that you can understand the default Privoxy configuration files, and maybe use this
+      knowledge to customize your own installation. There is much, much more
+      that can be done with regular expressions. Now that you know enough to
+      get started, you can learn more on your own :/

+
+      
More reading on Perl Compatible Regular expressions: http://perldoc.perl.org/perlre.html

+
+      
For information on regular expression based substitutions and their
+      applications in filters, please see the filter file tutorial in this manual.

+    

+
+    

+      
14.2.
+      Privoxy's Internal Pages

+
+      
Since Privoxy proxies each
+      requested web page, it is easy for Privoxy to trap certain special URLs. In this way,
+      we can talk directly to Privoxy, and
+      see how it is configured, see how our rules are being applied, change
+      these rules and other configuration options, and even turn Privoxy's filtering off, all with a web
+      browser.

+
+      
The URLs listed below are the special ones that allow direct access
+      to Privoxy. Of course, Privoxy must be running to access these. If not,
+      you will get a friendly error message. Internet access is not necessary
+      either.

+
+      
+    

+
+    

+      
14.3. Chain of
+      Events

+
+      
Let's take a quick look at how some of Privoxy's core features are triggered, and the
+      ensuing sequence of events when a web page is requested by your
+      browser:

+
+      
    
+        
  • 
+          
    First, your web browser requests a web page. The browser knows
+          to send the request to Privoxy,
+          which will in turn, relay the request to the remote web server
+          after passing the following tests:
    
+        
    • 
+
+        
  • 
+          
    Privoxy traps any request for
+          its own internal CGI pages (e.g http://p.p/) and sends the CGI page back to the
+          browser.
    
+        
    • 
+
+        
  • 
+          
    Next, Privoxy checks to see if
+          the URL matches any "+block" patterns. If so, the URL is then
+          blocked, and the remote web server will not be contacted. "+handle-as-image" and "+handle-as-empty-document" are then checked,
+          and if there is no match, an HTML "BLOCKED" page is sent back to the browser.
+          Otherwise, if it does match, an image is returned for the former,
+          and an empty text document for the latter. The type of image would
+          depend on the setting of "+set-image-blocker" (blank, checkerboard
+          pattern, or an HTTP redirect to an image elsewhere).
    
+        
    • 
+
+        
  • 
+          
    Untrusted URLs are blocked. If URLs are being added to the
+          trust file, then that is done.
    
+        
    • 
+
+        
  • 
+          
    If the URL pattern matches the "+fast-redirects" action, it is then processed.
+          Unwanted parts of the requested URL are stripped.
    
+        
    • 
+
+        
  • 
+          
    Now the rest of the client browser's request headers are
+          processed. If any of these match any of the relevant actions (e.g.
+          "+hide-user-agent", etc.), headers are
+          suppressed or forged as determined by these actions and their
+          parameters.
    
+        
    • 
+
+        
  • 
+          
    Now the web server starts sending its response back (i.e.
+          typically a web page).
    
+        
    • 
+
+        
  • 
+          
    First, the server headers are read and processed to determine,
+          among other things, the MIME type (document type) and encoding. The
+          headers are then filtered as determined by the "+crunch-incoming-cookies", "+session-cookies-only", and "+downgrade-http-version" actions.
    
+        
    • 
+
+        
  • 
+          
    If any "+filter" action or "+deanimate-gifs" action applies (and the
+          document type fits the action), the rest of the page is read into
+          memory (up to a configurable limit). Then the filter rules (from
+          default.filter and any other filter
+          files) are processed against the buffered content. Filters are
+          applied in the order they are specified in one of the filter files.
+          Animated GIFs, if present, are reduced to either the first or last
+          frame, depending on the action setting.The entire page, which is
+          now filtered, is then sent by Privoxy back to your browser.
    
+
+          
    If neither a "+filter" action or "+deanimate-gifs" matches, then Privoxy passes the raw data through to the
+          client browser as it becomes available.
    
+        
    • 
+
+        
  • 
+          
    As the browser receives the now (possibly filtered) page
+          content, it reads and then requests any URLs that may be embedded
+          within the page source, e.g. ad images, stylesheets, JavaScript,
+          other HTML documents (e.g. frames), sounds, etc. For each of these
+          objects, the browser issues a separate request (this is easily
+          viewable in Privoxy's logs). And
+          each such request is in turn processed just as above. Note that a
+          complex web page will have many, many such embedded URLs. If these
+          secondary requests are to a different server, then quite possibly a
+          very differing set of actions is triggered.
    
+        
    • 
+      

+
+      
NOTE: This is somewhat of a simplistic overview of what happens with
+      each URL request. For the sake of brevity and simplicity, we have
+      focused on Privoxy's core features
+      only.

+    

+
+    

+      
14.4.
+      Troubleshooting: Anatomy of an Action

+
+      
The way Privoxy applies actions and filters to any given URL can be complex,
+      and not always so easy to understand what is happening. And sometimes
+      we need to be able to see just what Privoxy is doing. Especially, if something
+      Privoxy is doing is causing us a
+      problem inadvertently. It can be a little daunting to look at the
+      actions and filters files themselves, since they tend to be filled with
+      regular expressions whose
+      consequences are not always so obvious.

+
+      
One quick test to see if Privoxy is
+      causing a problem or not, is to disable it temporarily. This should be
+      the first troubleshooting step (be sure to flush caches afterward!).
+      Looking at the logs is a good idea too. (Note that both the toggle
+      feature and logging are enabled via config
+      file settings, and may need to be turned "on".)

+
+      
Another easy troubleshooting step to try is if you have done any
+      customization of your installation, revert back to the installed
+      defaults and see if that helps. There are times the developers get
+      complaints about one thing or another, and the problem is more related
+      to a customized configuration issue.

+
+      
Privoxy also provides the http://config.privoxy.org/show-url-info page that can show
+      us very specifically how actions are
+      being applied to any given URL. This is a big help for
+      troubleshooting.

+
+      
First, enter one URL (or partial URL) at the prompt, and then
+      Privoxy will tell us how the current
+      configuration will handle it. This will not help with filtering effects
+      (i.e. the "+filter" action) from one of the filter files since
+      this is handled very differently and not so easy to trap! It also will
+      not tell you about any other URLs that may be embedded within the URL
+      you are testing. For instance, images such as ads are expressed as URLs
+      within the raw page source of HTML pages. So you will only get info for
+      the actual URL that is pasted into the prompt area -- not any sub-URLs.
+      If you want to know about embedded URLs like ads, you will have to dig
+      those out of the HTML source. Use your browser's "View Page Source" option for this. Or right click on
+      the ad, and grab the URL.

+
+      
Let's try an example, google.com, and look at it one section at a time in a sample
+      configuration (your real configuration may vary):

+
+      
+        
+          
-          
-        

+            
  Matches for http://www.google.com:
 
  In file: default.action [ View ] [ View ] [ Edit ]
 (no matches in this file)
 

-            

-
-        

-          This is telling us how we have defined our "actions", and which ones match for our test
-          case, "google.com". Displayed is all the
-          actions that are available to us. Remember, the + sign denotes "on". - denotes "off". So
-          some are "on" here, but many are "off". Each example we try may provide a
-          slightly different end result, depending on our configuration
-          directives.
-        

-        

-          The first listing is for our default.action file. The large, multi-line listing,
-          is how the actions are set to match for all URLs, i.e. our default
-          settings. If you look at your "actions"
-          file, this would be the section just below the "aliases" section near the top. This will apply to
-          all URLs as signified by the single forward slash at the end of the
-          listing -- " / ".
-        

-        

-          But we have defined additional actions that would be exceptions to
-          these general rules, and then we list specific URLs (or patterns)
-          that these exceptions would apply to. Last match wins. Just below
-          this then are two explicit matches for ".google.com". The first is negating our previous
-          cookie setting, which was for "+session-cookies-only" (i.e. not persistent).
-          So we will allow persistent cookies for google, at least that is
-          how it is in this example. The second turns off any "+fast-redirects" action, allowing this to take
-          place unmolested. Note that there is a leading dot here -- ".google.com". This will match any hosts and
-          sub-domains, in the google.com domain also, such as "www.google.com" or "mail.google.com". But it would not match "www.google.de"! So, apparently, we have these
-          two actions defined as exceptions to the general rules at the top
-          somewhere in the lower part of our default.action file, and "google.com" is referenced somewhere in these latter
-          sections.
-        

-        

-          Then, for our user.action file, we again
-          have no hits. So there is nothing google-specific that we might
-          have added to our own, local configuration. If there was, those
-          actions would over-rule any actions from previously processed
-          files, such as default.action. user.action typically has the last word. This is
-          the best place to put hard and fast exceptions,
-        

-        

-          And finally we pull it all together in the bottom section and
-          summarize how Privoxy is applying
-          all its "actions" to "google.com":
-        

-        

-        

-        
-          
-            
+        
+      

-
+          

+
+      
This is telling us how we have defined our "actions",
+      and which ones match for our test case, "google.com". Displayed is all the actions that are
+      available to us. Remember, the + sign denotes
+      "on". - denotes
+      "off". So some are "on" here, but many are "off". Each example we try may provide a slightly
+      different end result, depending on our configuration directives.

+
+      
The first listing is for our default.action file. The large, multi-line listing, is
+      how the actions are set to match for all URLs, i.e. our default
+      settings. If you look at your "actions"
+      file, this would be the section just below the "aliases" section near the top. This will apply to all
+      URLs as signified by the single forward slash at the end of the listing
+      -- " / ".

+
+      
But we have defined additional actions that would be exceptions to
+      these general rules, and then we list specific URLs (or patterns) that
+      these exceptions would apply to. Last match wins. Just below this then
+      are two explicit matches for ".google.com".
+      The first is negating our previous cookie setting, which was for
+      "+session-cookies-only" (i.e. not persistent). So we
+      will allow persistent cookies for google, at least that is how it is in
+      this example. The second turns off any "+fast-redirects" action, allowing this to take
+      place unmolested. Note that there is a leading dot here -- ".google.com". This will match any hosts and
+      sub-domains, in the google.com domain also, such as "www.google.com" or "mail.google.com". But it would not match "www.google.de"! So, apparently, we have these two
+      actions defined as exceptions to the general rules at the top somewhere
+      in the lower part of our default.action file,
+      and "google.com" is referenced somewhere in
+      these latter sections.

+
+      
Then, for our user.action file, we again
+      have no hits. So there is nothing google-specific that we might have
+      added to our own, local configuration. If there was, those actions
+      would over-rule any actions from previously processed files, such as
+      default.action. user.action typically has the last word. This is the
+      best place to put hard and fast exceptions,

+
+      
And finally we pull it all together in the bottom section and
+      summarize how Privoxy is applying all
+      its "actions" to "google.com":

+
+      
+        
+          
-          
-        

+            
 
 Final results:
 
  -add-header
@@ -835,27 +734,23 @@ In file: user.action [ View ] 
-            

-
-        

-          Notice the only difference here to the previous listing, is to
-          "fast-redirects" and "session-cookies-only", which are activated
-          specifically for this site in our configuration, and thus show in
-          the "Final Results".
-        

-        

-          Now another example, "ad.doubleclick.net":
-        

-        

-        

-        
-          
-            
+        
+      

-
+          

+
+      
Notice the only difference here to the previous listing, is to
+      "fast-redirects" and "session-cookies-only", which are activated specifically
+      for this site in our configuration, and thus show in the "Final Results".

+
+      
Now another example, "ad.doubleclick.net":

+
+      
+        
+          
-          
-        

+            
 
 { +block{Domains starts with "ad"} }
   ad*.
 
@@ -865,48 +760,41 @@ In file: user.action [ View ] 
-            

-
-        

-          We'll just show the interesting part here - the explicit matches.
-          It is matched three different times. Two "+block{}" sections, and a "+block{} +handle-as-image", which is the expanded
-          form of one of our aliases that had been defined as: "+block-as-image". ("Aliases" are defined in the first section of
-          the actions file and typically used to combine more than one
-          action.)
-        

-        

-          Any one of these would have done the trick and blocked this as an
-          unwanted image. This is unnecessarily redundant since the last case
-          effectively would also cover the first. No point in taking chances
-          with these guys though ;-) Note that if you want an ad or obnoxious
-          URL to be invisible, it should be defined as "ad.doubleclick.net" is done here -- as both a "+block{}" and an "+handle-as-image". The custom alias "+block-as-image"
-          just simplifies the process and make it more readable.
-        

-        

-          One last example. Let's try "http://www.example.net/adsl/HOWTO/". This one is
-          giving us problems. We are getting a blank page. Hmmm ...
-        

-        

-        

-        
-          
-            
+        
+      

-
+          

+
+      
We'll just show the interesting part here - the explicit matches. It
+      is matched three different times. Two "+block{}" sections, and a "+block{}
+      +handle-as-image", which is the expanded form of one of our
+      aliases that had been defined as: "+block-as-image". ("Aliases"
+      are defined in the first section of the actions file and typically used
+      to combine more than one action.)

+
+      
Any one of these would have done the trick and blocked this as an
+      unwanted image. This is unnecessarily redundant since the last case
+      effectively would also cover the first. No point in taking chances with
+      these guys though ;-) Note that if you want an ad or obnoxious URL to
+      be invisible, it should be defined as "ad.doubleclick.net" is done here -- as both a "+block{}"
+      and an "+handle-as-image". The custom alias "+block-as-image" just
+      simplifies the process and make it more readable.

+
+      
One last example. Let's try "http://www.example.net/adsl/HOWTO/". This one is giving
+      us problems. We are getting a blank page. Hmmm ...

+
+      
+        
+          
-          
-        

+            
 
 Matches for http://www.example.net/adsl/HOWTO/:
 
  In file: default.action [ View ] [ View ] 
-            

-
-        

-          Ooops, the "/adsl/" is matching "/ads" in our configuration! But we did not
-          want this at all! Now we see why we get the blank page. It is
-          actually triggering two different actions here, and the effects are
-          aggregated so that the URL is blocked, and Privoxy is told to treat the block as if it
-          were an image. But this is, of course, all wrong. We could now add
-          a new action below this (or better in our own user.action file) that explicitly un blocks ( "{-block}") paths with "adsl" in them (remember, last match in the
-          configuration wins). There are various ways to handle such
-          exceptions. Example:
-        

-        

-        

-        
-          
-            
+        
+      

-
+          

+
+      
Ooops, the "/adsl/" is matching
+      "/ads" in our configuration! But we did not
+      want this at all! Now we see why we get the blank page. It is actually
+      triggering two different actions here, and the effects are aggregated
+      so that the URL is blocked, and Privoxy is told to treat the block as if it were
+      an image. But this is, of course, all wrong. We could now add a new
+      action below this (or better in our own user.action file) that explicitly un blocks ( "{-block}")
+      paths with "adsl" in them (remember, last
+      match in the configuration wins). There are various ways to handle such
+      exceptions. Example:

+
+      
+        
+          
-          
-        

+            
 
 { -block }
   /adsl
 

-            

-
-        

-          Now the page displays ;-) Remember to flush your browser's caches
-          when making these kinds of changes to your configuration to insure
-          that you get a freshly delivered page! Or, try using Shift+Reload.
-        

-        

-          But now what about a situation where we get no explicit matches
-          like we did with:
-        

-        

-        

-        
-          
-            
+        
+      

-
+          

+
+      
Now the page displays ;-) Remember to flush your browser's caches
+      when making these kinds of changes to your configuration to insure that
+      you get a freshly delivered page! Or, try using Shift+Reload.

+
+      
But now what about a situation where we get no explicit matches like
+      we did with:

+
+      
+        
+          
-          
-        

+            
 
 { +block{Path starts with "ads".} +handle-as-image }
  /ads
 

-            

-
-        

-          That actually was very helpful and pointed us quickly to where the
-          problem was. If you don't get this kind of match, then it means one
-          of the default rules in the first section of default.action is causing the problem. This would
-          require some guesswork, and maybe a little trial and error to
-          isolate the offending rule. One likely cause would be one of the "+filter" actions. These tend to be harder to
-          troubleshoot. Try adding the URL for the site to one of aliases
-          that turn off "+filter":
-        

-        

-        

-        
-          
-            
+        
+      

-
+          

+
+      
That actually was very helpful and pointed us quickly to where the
+      problem was. If you don't get this kind of match, then it means one of
+      the default rules in the first section of default.action is causing the problem. This would
+      require some guesswork, and maybe a little trial and error to isolate
+      the offending rule. One likely cause would be one of the "+filter"
+      actions. These tend to be harder to troubleshoot. Try adding the URL
+      for the site to one of aliases that turn off "+filter":

+
+      
+        
+          
-          
-        

+            
 
 { shop }
  .quietpc.com
  .worldpay.com   # for quietpc.com
@@ -1054,111 +931,96 @@ In file: user.action [ View ] 
-            

-
-        

-          "{ shop }" is
-          an "alias" that expands to "{ -filter -session-cookies-only
-          }". Or you could do your own exception to negate
-          filtering:
-        

-        

-        

-        
-          
-            
+        
+      

-
+          

+
+      
"{ shop }" is an
+      "alias" that expands to "{ -filter -session-cookies-only
+      }". Or you could do your own exception to negate
+      filtering:

+
+      
+        
+          
-          
-        

+            
 
 { -filter }
  # Disable ALL filter actions for sites in this section
  .forbes.com
  developer.ibm.com
  localhost
 

-            

-
-        

-          This would turn off all filtering for these sites. This is best put
-          in user.action, for local site
-          exceptions. Note that when a simple domain pattern is used by
-          itself (without the subsequent path portion), all sub-pages within
-          that domain are included automatically in the scope of the action.
-        

-        

-          Images that are inexplicably being blocked, may well be hitting the
-          "+filter{banners-by-size}" rule, which assumes
-          that images of certain sizes are ad banners (works well most of the time
-          since these tend to be standardized).
-        

-        

-          "{ fragile }"
-          is an alias that disables most actions that are the most likely to
-          cause trouble. This can be used as a last resort for problem sites.
-        

-        

-        

-        
-          
-            
+        
+      

-
+          

+
+      
This would turn off all filtering for these sites. This is best put
+      in user.action, for local site exceptions.
+      Note that when a simple domain pattern is used by itself (without the
+      subsequent path portion), all sub-pages within that domain are included
+      automatically in the scope of the action.

+
+      
Images that are inexplicably being blocked, may well be hitting the
+      "+filter{banners-by-size}" rule, which assumes that
+      images of certain sizes are ad banners (works well most of the time since these
+      tend to be standardized).

+
+      
"{ fragile }" is
+      an alias that disables most actions that are the most likely to cause
+      trouble. This can be used as a last resort for problem sites.

+
+      
+        
+          
-          
-        

+            
 
 { fragile }
  # Handle with care: easy to break
  mail.google.
  mybank.example.com
 

-            

-
-        

-          Remember to flush
-          caches! Note that the mail.google reference lacks the TLD portion (e.g.
-          ".com"). This will effectively match any
-          TLD with google in it, such as mail.google.de., just as an example.
-        

-        

-          If this still does not work, you will have to go through the
-          remaining actions one by one to find which one(s) is causing the
-          problem.
-        

-      

-    

-    

-      

-      
-        
-          
-          
-          
-        
-        
-          
-          
-          

-            Prev
-          
-            Home
-          
-             
-          

-            See Also
-          
-             
-          
-             
           
         

       

+
+      
Remember to flush
+      caches! Note that the mail.google
+      reference lacks the TLD portion (e.g. ".com"). This will effectively match any TLD with
+      google in it, such as mail.google.de., just as an example.

+
+      
If this still does not work, you will have to go through the
+      remaining actions one by one to find which one(s) is causing the
+      problem.

     

-  
-
+  

+
+  

+    

 
+    
+      
+        
+
+        
+
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
PrevHome 
See Also  

+  

+
+
diff --git a/doc/webserver/user-manual/config.html b/doc/webserver/user-manual/config.html
index 5cad65b7..4f5f821d 100644
--- a/doc/webserver/user-manual/config.html
+++ b/doc/webserver/user-manual/config.html
@@ -1,1047 +1,871 @@
-
+
+
 
-  
-    
-      The Main Configuration File
-    
-    
-    
-    
-    
-    
-    
-    
-  
-  
-    

-      
-        
-          
-        
-        
-          
-          
-          
-        
-      

-            Privoxy 3.0.26 User Manual
-          

-            Prev
-          
-          
-            Next
-          

-      

-    

-    

-      

-        7. The Main Configuration File
-      

-      

-        By default, the main configuration file is named config, with the exception of Windows, where it is
-        named config.txt. Configuration lines
-        consist of an initial keyword followed by a list of values, all
-        separated by whitespace (any number of spaces or tabs). For example:
-      

-      

-      

-      

-          confdir /etc/privoxy
-      

-
-      

-        Assigns the value /etc/privoxy to the option
-        confdir and thus indicates that the
-        configuration directory is named "/etc/privoxy/".
-      

-      

-        All options in the config file except for confdir and logdir are
-        optional. Watch out in the below description for what happens if you
-        leave them unset.
-      

-      

-        The main config file controls all aspects of Privoxy's operation that are not location
-        dependent (i.e. they apply universally, no matter where you may be
-        surfing). Like the filter and action files, the config file is a
-        plain text file and can be modified with a text editor like emacs,
-        vim or notepad.exe.
-      

-      

-        

-          7.1. Local Set-up Documentation
-        

-        

-          If you intend to operate Privoxy
-          for more users than just yourself, it might be a good idea to let
-          them know how to reach you, what you block and why you do that,
-          your policies, etc.
-        

-        

-          

-            7.1.1. user-manual
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  Location of the Privoxy
-                  User Manual.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  A fully qualified URI
-                

-              

-              

-                Default value:
-              

-              

-                

-                  Unset
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  https://www.privoxy.org/version/user-manual/ will be
-                  used, where version is
-                  the Privoxy version.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  The User Manual URI is the single best source of
-                  information on Privoxy,
-                  and is used for help links from some of the internal CGI
-                  pages. The manual itself is normally packaged with the
-                  binary distributions, so you probably want to set this to a
-                  locally installed copy.
-                

-                

-                  Examples:
-                

-                

-                  The best all purpose solution is simply to put the full
-                  local PATH to where the User Manual is located:
-                

-                

-                

-                
-                  
-                    
+                
+              

-
+
+  The Main Configuration File
+  
+  
+  
+  
+  
+  
+  
+
+
+
+  

+    
+      
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
Privoxy 3.0.26 User Manual
PrevNext

+    

+  

+
+  

+    
7. The Main Configuration
+    File

+
+    
By default, the main configuration file is named config, with the exception of Windows, where it is named
+    config.txt. Configuration lines consist of an
+    initial keyword followed by a list of values, all separated by whitespace
+    (any number of spaces or tabs). For example:

+
+    
  confdir /etc/privoxy

+
+    
Assigns the value /etc/privoxy to the option
+    confdir and thus indicates that the
+    configuration directory is named "/etc/privoxy/".

+
+    
All options in the config file except for confdir and logdir are optional.
+    Watch out in the below description for what happens if you leave them
+    unset.

+
+    
The main config file controls all aspects of Privoxy's operation that are not location dependent
+    (i.e. they apply universally, no matter where you may be surfing). Like
+    the filter and action files, the config file is a plain text file and can
+    be modified with a text editor like emacs, vim or notepad.exe.

+
+    

+      
7.1. Local
+      Set-up Documentation

+
+      
If you intend to operate Privoxy
+      for more users than just yourself, it might be a good idea to let them
+      know how to reach you, what you block and why you do that, your
+      policies, etc.

+
+      

+        
7.1.1.
+        user-manual

+
+        

+          

+            
Specifies:

+
+            

+              
Location of the Privoxy
+              User Manual.

+            

+
+            
Type of value:

+
+            

+              
A fully qualified URI

+            

+
+            
Default value:

+
+            

+              
Unset

+            

+
+            
Effect if unset:

+
+            

+              
https://www.privoxy.org/version/user-manual/ will be
+              used, where version is the
+              Privoxy version.

+            

+
+            
Notes:

+
+            

+              
The User Manual URI is the single best source of information
+              on Privoxy, and is used for
+              help links from some of the internal CGI pages. The manual
+              itself is normally packaged with the binary distributions, so
+              you probably want to set this to a locally installed copy.

+
+              
Examples:

+
+              
The best all purpose solution is simply to put the full
+              local PATH to where the User Manual is located:

+
+              
+                
+                  
-                  
-                

+                    
   user-manual  /usr/share/doc/privoxy/user-manual
 

-                    

+                  

 
-                

-                  The User Manual is then available to anyone with access to
-                  Privoxy, by following the
-                  built-in URL: http://config.privoxy.org/user-manual/ (or
-                  the shortcut: http://p.p/user-manual/).
-                

-                

-                  If the documentation is not on the local system, it can be
-                  accessed from a remote server, as:
-                

-                

-                

-                
-                  
-                    

-
+              
The User Manual is then available to anyone with access to
+              Privoxy, by following the
+              built-in URL: http://config.privoxy.org/user-manual/ (or the
+              shortcut: http://p.p/user-manual/).

+
+              
If the documentation is not on the local system, it can be
+              accessed from a remote server, as:

+
+              
+                
+                  
+                
+              

+                    
   user-manual  http://example.com/privoxy/user-manual/
 

+                  

+
+              

+                
+                  
+                    
+                  
+
+                  
+                    
Warning

+                      
If set, this option should be the first option in the
+                      config file, because it is used while the
+                      config file is being read on start-up.

                     		
                   

                 

-
-                

-                  
-                    
-                      
-                    
-                    
-                      
-                    
-                  

-                        Warning
-                      

-                        

-                          If set, this option should be the first option in
-                          the config file, because it is used
-                          while the config file is being read on start-up.
-                        

-                      

-                

-              
-            
-          

+              
+            
+          
         
-        

-          

-            7.1.2. trust-info-url
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  A URL to be displayed in the error page that users will see
-                  if access to an untrusted page is denied.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  URL
-                

-              

-              

-                Default value:
-              

-              

-                

-                  Unset
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  No links are displayed on the "untrusted" error page.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  The value of this option only matters if the experimental
-                  trust mechanism has been activated. (See trustfile below.)
-                

-                

-                  If you use the trust mechanism, it is a good idea to write
-                  up some on-line documentation about your trust policy and
-                  to specify the URL(s) here. Use multiple times for multiple
-                  URLs.
-                

-                

-                  The URL(s) should be added to the trustfile as well, so
-                  users don't end up locked out from the information on why
-                  they were locked out in the first place!
-                

-              

-            

-          

+      

+
+      

+        
7.1.2.
+        trust-info-url

+
+        

+          

+            
Specifies:

+
+            

+              
A URL to be displayed in the error page that users will see
+              if access to an untrusted page is denied.

+            

+
+            
Type of value:

+
+            

+              
URL

+            

+
+            
Default value:

+
+            

+              
Unset

+            

+
+            
Effect if unset:

+
+            

+              
No links are displayed on the "untrusted" error page.

+            

+
+            
Notes:

+
+            

+              
The value of this option only matters if the experimental
+              trust mechanism has been activated. (See trustfile below.)

+
+              
If you use the trust mechanism, it is a good idea to write
+              up some on-line documentation about your trust policy and to
+              specify the URL(s) here. Use multiple times for multiple
+              URLs.

+
+              
The URL(s) should be added to the trustfile as well, so
+              users don't end up locked out from the information on why they
+              were locked out in the first place!

+            

+          

         

-        

-          

-            7.1.3. admin-address
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  An email address to reach the Privoxy administrator.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  Email address
-                

-              

-              

-                Default value:
-              

-              

-                

-                  Unset
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  No email address is displayed on error pages and the CGI
-                  user interface.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  If both admin-address and proxy-info-url are unset, the whole
-                  "Local Privoxy Support" box on all generated pages will not
-                  be shown.
-                

-              

-            

-          

+      

+
+      

+        
7.1.3.
+        admin-address

+
+        

+          

+            
Specifies:

+
+            

+              
An email address to reach the Privoxy administrator.

+            

+
+            
Type of value:

+
+            

+              
Email address

+            

+
+            
Default value:

+
+            

+              
Unset

+            

+
+            
Effect if unset:

+
+            

+              
No email address is displayed on error pages and the CGI
+              user interface.

+            

+
+            
Notes:

+
+            

+              
If both admin-address and
+              proxy-info-url are unset, the whole
+              "Local Privoxy Support" box on all generated pages will not be
+              shown.

+            

+          

         

-        

-          

-            7.1.4. proxy-info-url
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  A URL to documentation about the local Privoxy setup, configuration or
-                  policies.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  URL
-                

-              

-              

-                Default value:
-              

-              

-                

-                  Unset
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  No link to local documentation is displayed on error pages
-                  and the CGI user interface.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  If both admin-address and proxy-info-url are unset, the whole
-                  "Local Privoxy Support" box on all generated pages will not
-                  be shown.
-                

-                

-                  This URL shouldn't be blocked ;-)
-                

-              

-            

-          

+      

+
+      

+        
7.1.4.
+        proxy-info-url

+
+        

+          

+            
Specifies:

+
+            

+              
A URL to documentation about the local Privoxy setup, configuration or
+              policies.

+            

+
+            
Type of value:

+
+            

+              
URL

+            

+
+            
Default value:

+
+            

+              
Unset

+            

+
+            
Effect if unset:

+
+            

+              
No link to local documentation is displayed on error pages
+              and the CGI user interface.

+            

+
+            
Notes:

+
+            

+              
If both admin-address and
+              proxy-info-url are unset, the whole
+              "Local Privoxy Support" box on all generated pages will not be
+              shown.

+
+              
This URL shouldn't be blocked ;-)

+            

+          

         

       

-      

-        

-          7.2. Configuration and Log File
-          Locations
-        

-        

-          Privoxy can (and normally does)
-          use a number of other files for additional configuration, help and
-          logging. This section of the configuration file tells Privoxy where to find those other files.
-        

-        

-          The user running Privoxy, must
-          have read permission for all configuration files, and write
-          permission to any files that would be modified, such as log files
-          and actions files.
-        

-        

-          

-            7.2.1. confdir
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  The directory where the other configuration files are
-                  located.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  Path name
-                

-              

-              

-                Default value:
-              

-              

-                

-                  /etc/privoxy (Unix) or Privoxy installation dir (Windows)
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  Mandatory
-                

-              

-              

-                Notes:
-              

-              

-                

-                  No trailing "/", please.
-                

-              

-            

-          

+    

+
+    

+      
7.2.
+      Configuration and Log File Locations

+
+      
Privoxy can (and normally does) use
+      a number of other files for additional configuration, help and logging.
+      This section of the configuration file tells Privoxy where to find those other files.

+
+      
The user running Privoxy, must have
+      read permission for all configuration files, and write permission to
+      any files that would be modified, such as log files and actions
+      files.

+
+      

+        
7.2.1.
+        confdir

+
+        

+          

+            
Specifies:

+
+            

+              
The directory where the other configuration files are
+              located.

+            

+
+            
Type of value:

+
+            

+              
Path name

+            

+
+            
Default value:

+
+            

+              
/etc/privoxy (Unix) or Privoxy installation dir (Windows)

+            

+
+            
Effect if unset:

+
+            

+              
Mandatory

+            

+
+            
Notes:

+
+            

+              
No trailing "/", please.

+            

+          

         

-        

-          

-            7.2.2. templdir
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  An alternative directory where the templates are loaded
-                  from.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  Path name
-                

-              

-              

-                Default value:
-              

-              

-                

-                  unset
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  The templates are assumed to be located in
-                  confdir/template.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  Privoxy's original
-                  templates are usually overwritten with each update. Use
-                  this option to relocate customized templates that should be
-                  kept. As template variables might change between updates,
-                  you shouldn't expect templates to work with Privoxy releases other than the one
-                  they were part of, though.
-                

-              

-            

-          

+      

+
+      

+        
7.2.2.
+        templdir

+
+        

+          

+            
Specifies:

+
+            

+              
An alternative directory where the templates are loaded
+              from.

+            

+
+            
Type of value:

+
+            

+              
Path name

+            

+
+            
Default value:

+
+            

+              
unset

+            

+
+            
Effect if unset:

+
+            

+              
The templates are assumed to be located in
+              confdir/template.

+            

+
+            
Notes:

+
+            

+              
Privoxy's original
+              templates are usually overwritten with each update. Use this
+              option to relocate customized templates that should be kept. As
+              template variables might change between updates, you shouldn't
+              expect templates to work with Privoxy releases other than the one they
+              were part of, though.

+            

+          

         

-        

-          

-            7.2.3. temporary-directory
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  A directory where Privoxy can create temporary files.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  Path name
-                

-              

-              

-                Default value:
-              

-              

-                

-                  unset
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  No temporary files are created, external filters don't
-                  work.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  To execute external
-                  filters, Privoxy
-                  has to create temporary files. This directive specifies the
-                  directory the temporary files should be written to.
-                

-                

-                  It should be a directory only Privoxy (and trusted users) can
-                  access.
-                

-              

-            

-          

+      

+
+      

+        
7.2.3. temporary-directory

+
+        

+          

+            
Specifies:

+
+            

+              
A directory where Privoxy can create temporary files.

+            

+
+            
Type of value:

+
+            

+              
Path name

+            

+
+            
Default value:

+
+            

+              
unset

+            

+
+            
Effect if unset:

+
+            

+              
No temporary files are created, external filters don't
+              work.

+            

+
+            
Notes:

+
+            

+              
To execute external
+              filters, Privoxy has
+              to create temporary files. This directive specifies the
+              directory the temporary files should be written to.

+
+              
It should be a directory only Privoxy (and trusted users) can
+              access.

+            

+          

         

-        

-          

-            7.2.4. logdir
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  The directory where all logging takes place (i.e. where the
-                  logfile is located).
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  Path name
-                

-              

-              

-                Default value:
-              

-              

-                

-                  /var/log/privoxy (Unix) or Privoxy installation dir (Windows)
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  Mandatory
-                

-              

-              

-                Notes:
-              

-              

-                

-                  No trailing "/", please.
-                

-              

-            

-          

+      

+
+      

+        
7.2.4. logdir

+
+        

+          

+            
Specifies:

+
+            

+              
The directory where all logging takes place (i.e. where the
+              logfile is located).

+            

+
+            
Type of value:

+
+            

+              
Path name

+            

+
+            
Default value:

+
+            

+              
/var/log/privoxy (Unix) or Privoxy installation dir (Windows)

+            

+
+            
Effect if unset:

+
+            

+              
Mandatory

+            

+
+            
Notes:

+
+            

+              
No trailing "/", please.

+            

+          

         

-        

-          

-            7.2.5. actionsfile
-          

-          
-          

-            

-              

-                Specifies:
-              

-              

-                

-                  The actions file(s) to use
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  Complete file name, relative to confdir
-                

-              

-              

-                Default values:
-              

-              

-                
-                  
-                    
-                      
-                    
-                    
-                      
-                    
-                    
-                      
-                    
-                  
-                

-                        

-                            match-all.action # Actions that are applied to all sites and maybe overruled later on.
-                        

-                      

-                        

-                            default.action   # Main actions file
-                        

-                      

-                        

-                            user.action      # User customizations
-                        

-                      

-              

-              

-                Effect if unset:
-              

-              

-                

-                  No actions are taken at all. More or less neutral proxying.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  Multiple actionsfile lines are
-                  permitted, and are in fact recommended!
-                

-                

-                  The default values are default.action, which is the "main" actions file maintained by the
-                  developers, and user.action,
-                  where you can make your personal additions.
-                

-                

-                  Actions files contain all the per site and per URL
-                  configuration for ad blocking, cookie management, privacy
-                  considerations, etc.
-                

-              

-            

-          

+      

+
+      

+        
7.2.5.
+        actionsfile

+
+        

+          

+            
Specifies:

+
+            

+              
The actions file(s) to
+              use

+            

+
+            
Type of value:

+
+            

+              
Complete file name, relative to confdir

+            

+
+            
Default values:

+
+            

+              
+                
+                  
+                    
+                  
+
+                  
+                    
+                  
+
+                  
+                    
+                  
+                
+              

+                      

+                        match-all.action # Actions that are applied to all sites and maybe overruled later on.

+                    

+                      

+                        default.action   # Main actions file

+                    

+                      

+                        user.action      # User customizations

+                    

+            

+
+            
Effect if unset:

+
+            

+              
No actions are taken at all. More or less neutral
+              proxying.

+            

+
+            
Notes:

+
+            

+              
Multiple actionsfile lines are
+              permitted, and are in fact recommended!

+
+              
The default values are default.action, which is the "main" actions file maintained by the
+              developers, and user.action, where
+              you can make your personal additions.

+
+              
Actions files contain all the per site and per URL
+              configuration for ad blocking, cookie management, privacy
+              considerations, etc.

+            

+          

         

-        

-          

-            7.2.6. filterfile
-          

-          
-          

-            

-              

-                Specifies:
-              

-              

-                

-                  The filter file(s) to use
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  File name, relative to confdir
-                

-              

-              

-                Default value:
-              

-              

-                

-                  default.filter (Unix) or default.filter.txt (Windows)
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  No textual content filtering takes place, i.e. all +filter{name} actions in the actions
-                  files are turned neutral.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  Multiple filterfile lines are
-                  permitted.
-                

-                

-                  The filter files contain
-                  content modification rules that use regular expressions. These rules
-                  permit powerful changes on the content of Web pages, and
-                  optionally the headers as well, e.g., you could try to
-                  disable your favorite JavaScript annoyances, re-write the
-                  actual displayed text, or just have some fun playing
-                  buzzword bingo with web pages.
-                

-                

-                  The +filter{name} actions rely on the
-                  relevant filter (name)
-                  to be defined in a filter file!
-                

-                

-                  A pre-defined filter file called default.filter that contains a number of
-                  useful filters for common problems is included in the
-                  distribution. See the section on the filter action for
-                  a list.
-                

-                

-                  It is recommended to place any locally adapted filters into
-                  a separate file, such as user.filter.
-                

-              

-            

-          

+      

+
+      

+        
7.2.6.
+        filterfile

+
+        

+          

+            
Specifies:

+
+            

+              
The filter file(s) to use

+            

+
+            
Type of value:

+
+            

+              
File name, relative to confdir

+            

+
+            
Default value:

+
+            

+              
default.filter (Unix) or default.filter.txt (Windows)

+            

+
+            
Effect if unset:

+
+            

+              
No textual content filtering takes place, i.e. all
+              +filter{name} actions in the actions
+              files are turned neutral.

+            

+
+            
Notes:

+
+            

+              
Multiple filterfile lines are
+              permitted.

+
+              
The filter files contain
+              content modification rules that use regular expressions. These rules
+              permit powerful changes on the content of Web pages, and
+              optionally the headers as well, e.g., you could try to disable
+              your favorite JavaScript annoyances, re-write the actual
+              displayed text, or just have some fun playing buzzword bingo
+              with web pages.

+
+              
The +filter{name} actions rely on the
+              relevant filter (name) to
+              be defined in a filter file!

+
+              
A pre-defined filter file called default.filter that contains a number of useful
+              filters for common problems is included in the distribution.
+              See the section on the filter action for a
+              list.

+
+              
It is recommended to place any locally adapted filters into
+              a separate file, such as user.filter.

+            

+          

         

-        

-          

-            7.2.7. logfile
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  The log file to use
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  File name, relative to logdir
-                

-              

-              

-                Default value:
-              

-              

-                

-                  Unset (commented
-                  out). When activated: logfile (Unix) or
-                  privoxy.log (Windows).
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  No logfile is written.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  The logfile is where all logging and error messages are
-                  written. The level of detail and number of messages are set
-                  with the debug option (see below).
-                  The logfile can be useful for tracking down a problem with
-                  Privoxy (e.g., it's not
-                  blocking an ad you think it should block) and it can help
-                  you to monitor what your browser is doing.
-                

-                

-                  Depending on the debug options below, the logfile may be a
-                  privacy risk if third parties can get access to it. As most
-                  users will never look at it, Privoxy only logs fatal errors by
-                  default.
-                

-                

-                  For most troubleshooting purposes, you will have to change
-                  that, please refer to the debugging section for details.
-                

-                

-                  Any log files must be writable by whatever user Privoxy is being run as (on
-                  Unix, default user id is "privoxy").
-                

-                

-                  To prevent the logfile from growing indefinitely, it is
-                  recommended to periodically rotate or shorten it. Many
-                  operating systems support log rotation out of the box, some
-                  require additional software to do it. For details, please
-                  refer to the documentation for your operating system.
-                

-              

-            

-          

+      

+
+      

+        
7.2.7.
+        logfile

+
+        

+          

+            
Specifies:

+
+            

+              
The log file to use

+            

+
+            
Type of value:

+
+            

+              
File name, relative to logdir

+            

+
+            
Default value:

+
+            

+              
Unset (commented
+              out). When activated: logfile (Unix) or privoxy.log
+              (Windows).

+            

+
+            
Effect if unset:

+
+            

+              
No logfile is written.

+            

+
+            
Notes:

+
+            

+              
The logfile is where all logging and error messages are
+              written. The level of detail and number of messages are set
+              with the debug option (see below). The
+              logfile can be useful for tracking down a problem with
+              Privoxy (e.g., it's not
+              blocking an ad you think it should block) and it can help you
+              to monitor what your browser is doing.

+
+              
Depending on the debug options below, the logfile may be a
+              privacy risk if third parties can get access to it. As most
+              users will never look at it, Privoxy only logs fatal errors by
+              default.

+
+              
For most troubleshooting purposes, you will have to change
+              that, please refer to the debugging section for details.

+
+              
Any log files must be writable by whatever user Privoxy is being run as (on Unix, default
+              user id is "privoxy").

+
+              
To prevent the logfile from growing indefinitely, it is
+              recommended to periodically rotate or shorten it. Many
+              operating systems support log rotation out of the box, some
+              require additional software to do it. For details, please refer
+              to the documentation for your operating system.

+            

+          

         

-        

-          

-            7.2.8. trustfile
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  The name of the trust file to use
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  File name, relative to confdir
-                

-              

-              

-                Default value:
-              

-              

-                

-                  Unset (commented
-                  out). When activated: trust (Unix) or trust.txt
-                  (Windows)
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  The entire trust mechanism is disabled.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  The trust mechanism is an experimental feature for building
-                  white-lists and should be used with care. It is NOT
-                  recommended for the casual user.
-                

-                

-                  If you specify a trust file, Privoxy will only allow access to
-                  sites that are specified in the trustfile. Sites can be
-                  listed in one of two ways:
-                

-                

-                  Prepending a ~ character limits
-                  access to this site only (and any sub-paths within this
-                  site), e.g. ~www.example.com
-                  allows access to ~www.example.com/features/news.html, etc.
-                

-                

-                  Or, you can designate sites as trusted referrers, by
-                  prepending the name with a +
-                  character. The effect is that access to untrusted sites
-                  will be granted -- but only if a link from this trusted
-                  referrer was used to get there. The link target will then
-                  be added to the "trustfile" so
-                  that future, direct accesses will be granted. Sites added
-                  via this mechanism do not become trusted referrers
-                  themselves (i.e. they are added with a ~ designation). There is a limit of 512 such
-                  entries, after which new entries will not be made.
-                

-                

-                  If you use the + operator in the
-                  trust file, it may grow considerably over time.
-                

-                

-                  It is recommended that Privoxy be compiled with the --disable-force, --disable-toggle and --disable-editor options, if this feature is
-                  to be used.
-                

-                

-                  Possible applications include limiting Internet access for
-                  children.
-                

-              

-            

-          

+      

+
+      

+        
7.2.8.
+        trustfile

+
+        

+          

+            
Specifies:

+
+            

+              
The name of the trust file to use

+            

+
+            
Type of value:

+
+            

+              
File name, relative to confdir

+            

+
+            
Default value:

+
+            

+              
Unset (commented
+              out). When activated: trust (Unix) or trust.txt
+              (Windows)

+            

+
+            
Effect if unset:

+
+            

+              
The entire trust mechanism is disabled.

+            

+
+            
Notes:

+
+            

+              
The trust mechanism is an experimental feature for building
+              white-lists and should be used with care. It is NOT recommended for
+              the casual user.

+
+              
If you specify a trust file, Privoxy will only allow access to sites
+              that are specified in the trustfile. Sites can be listed in one
+              of two ways:

+
+              
Prepending a ~ character limits
+              access to this site only (and any sub-paths within this site),
+              e.g. ~www.example.com allows access to
+              ~www.example.com/features/news.html,
+              etc.

+
+              
Or, you can designate sites as trusted referrers, by
+              prepending the name with a +
+              character. The effect is that access to untrusted sites will be
+              granted -- but only if a link from this trusted referrer was
+              used to get there. The link target will then be added to the
+              "trustfile" so that future, direct
+              accesses will be granted. Sites added via this mechanism do not
+              become trusted referrers themselves (i.e. they are added with a
+              ~ designation). There is a limit of
+              512 such entries, after which new entries will not be made.

+
+              
If you use the + operator in the
+              trust file, it may grow considerably over time.

+
+              
It is recommended that Privoxy be compiled with the --disable-force, --disable-toggle and --disable-editor options, if this feature is to
+              be used.

+
+              
Possible applications include limiting Internet access for
+              children.

+            

+          

         

       

-      

-        

-          7.3. Debugging
-        

-        

-          These options are mainly useful when tracing a problem. Note that
-          you might also want to invoke Privoxy with the --no-daemon command line option when debugging.
-        

-        

-          

-            7.3.1. debug
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  Key values that determine what information gets logged.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  Integer values
-                

-              

-              

-                Default value:
-              

-              

-                

-                  0 (i.e.: only fatal errors (that cause Privoxy to exit) are
-                  logged)
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  Default value is used (see above).
-                

-              

-              

-                Notes:
-              

-              

-                

-                  The available debug levels are:
-                

-                

-                

-                
-                  
-                    
+                
+              

-
+    
+
+    

+      
7.3.
+      Debugging

+
+      
These options are mainly useful when tracing a problem. Note that
+      you might also want to invoke Privoxy
+      with the --no-daemon command line option when
+      debugging.

+
+      

+        
7.3.1. debug

+
+        

+          

+            
Specifies:

+
+            

+              
Key values that determine what information gets logged.

+            

+
+            
Type of value:

+
+            

+              
Integer values

+            

+
+            
Default value:

+
+            

+              
0 (i.e.: only fatal errors (that cause Privoxy to exit) are
+              logged)

+            

+
+            
Effect if unset:

+
+            

+              
Default value is used (see above).

+            

+
+            
Notes:

+
+            

+              
The available debug levels are:

+
+              
+                
+                  
-                  
-                

+                    
   debug     1 # Log the destination for each request Privoxy let through. See also debug 1024.
   debug     2 # show each connection status
@@ -1061,2663 +885,2198 @@ Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
   debug 32768 # log all data read from the network
   debug 65536 # Log the applying actions
 

-                    

+                  

 
-                

-                  To select multiple debug levels, you can either add them or
-                  use multiple debug lines.
-                

-                

-                  A debug level of 1 is informative because it will show you
-                  each request as it happens. 1, 1024, 4096 and 8192 are
-                  recommended so that you will notice when things
-                  go wrong. The other levels are probably only of interest if
-                  you are hunting down a specific problem. They can produce a
-                  hell of an output (especially 16).
-                

-                

-                  If you are used to the more verbose settings, simply enable
-                  the debug lines below again.
-                

-                

-                  If you want to use pure CLF (Common Log Format), you should
-                  set "debug 512" ONLY and not
-                  enable anything else.
-                

-                

-                  Privoxy has a hard-coded
-                  limit for the length of log messages. If it's reached,
-                  messages are logged truncated and marked with "... [too long, truncated]".
-                

-                

-                  Please don't file any support requests without trying to
-                  reproduce the problem with increased debug level first.
-                  Once you read the log messages, you may even be able to
-                  solve the problem on your own.
-                

-              

-            

-          

-        

-        

-          

-            7.3.2. single-threaded
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  Whether to run only one server thread.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  1 or
-                  0
-                

-              

-              

-                Default value:
-              

-              

-                

-                  0
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  Multi-threaded (or, where unavailable: forked) operation,
-                  i.e. the ability to serve multiple requests simultaneously.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  This option is only there for debugging purposes. It will drastically
-                  reduce performance.
-                

-              

-            

-          

-        

-        

-          

-            7.3.3. hostname
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  The hostname shown on the CGI pages.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  Text
-                

-              

-              

-                Default value:
-              

-              

-                

-                  Unset
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  The hostname provided by the operating system is used.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  On some misconfigured systems resolving the hostname fails
-                  or takes too much time and slows Privoxy down. Setting a
-                  fixed hostname works around the problem.
-                

-                

-                  In other circumstances it might be desirable to show a
-                  hostname other than the one returned by the operating
-                  system. For example if the system has several different
-                  hostnames and you don't want to use the first one.
-                

-                

-                  Note that Privoxy does not validate the specified hostname
-                  value.
-                

-              

-            

-          

+              
To select multiple debug levels, you can either add them or
+              use multiple debug lines.

+
+              
A debug level of 1 is informative because it will show you
+              each request as it happens. 1, 1024, 4096 and 8192 are recommended so
+              that you will notice when things go wrong. The other levels are
+              probably only of interest if you are hunting down a specific
+              problem. They can produce a hell of an output (especially
+              16).

+
+              
If you are used to the more verbose settings, simply enable
+              the debug lines below again.

+
+              
If you want to use pure CLF (Common Log Format), you should
+              set "debug 512" ONLY and not enable
+              anything else.

+
+              
Privoxy has a hard-coded
+              limit for the length of log messages. If it's reached, messages
+              are logged truncated and marked with "...
+              [too long, truncated]".

+
+              
Please don't file any support requests without trying to
+              reproduce the problem with increased debug level first. Once
+              you read the log messages, you may even be able to solve the
+              problem on your own.

+            
+          
         

       

-      

-        

-          7.4. Access Control and Security
-        

-        

-          This section of the config file controls the security-relevant
-          aspects of Privoxy's
-          configuration.
-        

-        

-          

-            7.4.1. listen-address
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  The address and TCP port on which Privoxy will listen for client
-                  requests.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  [IP-Address]:Port
-                

-                

-                  [Hostname]:Port
-                

-              

-              

-                Default value:
-              

-              

-                

-                  127.0.0.1:8118
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  Bind to 127.0.0.1 (IPv4 localhost), port 8118. This is
-                  suitable and recommended for home users who run Privoxy on the same machine as
-                  their browser.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  You will need to configure your browser(s) to this proxy
-                  address and port.
-                

-                

-                  If you already have another service running on port 8118,
-                  or if you want to serve requests from other machines (e.g.
-                  on your local network) as well, you will need to override
-                  the default.
-                

-                

-                  You can use this statement multiple times to make Privoxy listen on more ports or
-                  more IP addresses. Suitable if
-                  your operating system does not support sharing IPv6 and IPv4
-                  protocols on the same socket.
-                

-                

-                  If a hostname is used instead of an IP address, Privoxy will try to resolve it
-                  to an IP address and if there are multiple, use the first
-                  one returned.
-                

-                

-                  If the address for the hostname isn't already known on the
-                  system (for example because it's in /etc/hostname), this
-                  may result in DNS traffic.
-                

-                

-                  If the specified address isn't available on the system, or
-                  if the hostname can't be resolved, Privoxy will fail to start.
-                

-                

-                  IPv6 addresses containing colons have to be quoted by
-                  brackets. They can only be used if Privoxy has been compiled with IPv6
-                  support. If you aren't sure if your version supports it,
-                  have a look at http://config.privoxy.org/show-status.
-                

-                

-                  Some operating systems will prefer IPv6 to IPv4 addresses
-                  even if the system has no IPv6 connectivity which is
-                  usually not expected by the user. Some even rely on DNS to
-                  resolve localhost which mean the "localhost" address used
-                  may not actually be local.
-                

-                

-                  It is therefore recommended to explicitly configure the
-                  intended IP address instead of relying on the operating
-                  system, unless there's a strong reason not to.
-                

-                

-                  If you leave out the address, Privoxy will bind to all IPv4
-                  interfaces (addresses) on your machine and may become
-                  reachable from the Internet and/or the local network. Be
-                  aware that some GNU/Linux distributions modify that
-                  behaviour without updating the documentation. Check for
-                  non-standard patches if your Privoxy version behaves differently.
-                

-                

-                  If you configure Privoxy
-                  to be reachable from the network, consider using access control lists (ACL's, see
-                  below), and/or a firewall.
-                

-                

-                  If you open Privoxy to
-                  untrusted users, you will also want to make sure that the
-                  following actions are disabled: enable-edit-actions
-                  and enable-remote-toggle
-                

-              

-              

-                Example:
-              

-              

-                

-                  Suppose you are running Privoxy on a machine which has the
-                  address 192.168.0.1 on your local private network
-                  (192.168.0.0) and has another outside connection with a
-                  different address. You want it to serve requests from
-                  inside only:
-                

-                

-                

-                
-                  
-                    
-                  
-                

-
-  listen-address  192.168.0.1:8118
-

-                    

 
-                

-                  Suppose you are running Privoxy on an IPv6-capable machine and
-                  you want it to listen on the IPv6 address of the loopback
-                  device:
-                

-                

-                

-                
-                  
-                    
-                  
-                

-
-  listen-address [::1]:8118
-

-                    

-              

-            

-          

-        

-        

-          

-            7.4.2. toggle
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  Initial state of "toggle" status
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  1 or 0
-                

-              

-              

-                Default value:
-              

-              

-                

-                  1
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  Act as if toggled on
-                

-              

-              

-                Notes:
-              

-              

-                

-                  If set to 0, Privoxy will
-                  start in "toggled off" mode,
-                  i.e. mostly behave like a normal, content-neutral proxy
-                  with both ad blocking and content filtering disabled. See
-                  enable-remote-toggle below.
-                

-              

-            

-          

-        

-        

-          

-            7.4.3. enable-remote-toggle
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  Whether or not the web-based
-                  toggle feature may be used
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  0 or 1
-                

-              

-              

-                Default value:
-              

-              

-                

-                  0
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  The web-based toggle feature is disabled.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  When toggled off, Privoxy
-                  mostly acts like a normal, content-neutral proxy, i.e.
-                  doesn't block ads or filter content.
-                

-                

-                  Access to the toggle feature can not be controlled separately by
-                  "ACLs" or HTTP authentication,
-                  so that everybody who can access Privoxy (see "ACLs" and listen-address above) can toggle it for all
-                  users. So this option is not recommended for multi-user
-                  environments with untrusted users.
-                

-                

-                  Note that malicious client side code (e.g Java) is also
-                  capable of using this option.
-                

-                

-                  As a lot of Privoxy users
-                  don't read documentation, this feature is disabled by
-                  default.
-                

-                

-                  Note that you must have compiled Privoxy with support for this feature,
-                  otherwise this option has no effect.
-                

-              

-            

-          

+      

+        
7.3.2. single-threaded

+
+        

+          

+            
Specifies:

+
+            

+              
Whether to run only one server thread.

+            

+
+            
Type of value:

+
+            

+              
1 or
+              0

+            

+
+            
Default value:

+
+            

+              
0

+            

+
+            
Effect if unset:

+
+            

+              
Multi-threaded (or, where unavailable: forked) operation,
+              i.e. the ability to serve multiple requests simultaneously.

+            

+
+            
Notes:

+
+            

+              
This option is only there for debugging purposes.
+              It will drastically
+              reduce performance.

+            

+          

+        

+      

+
+      

+        
7.3.3.
+        hostname

+
+        

+          

+            
Specifies:

+
+            

+              
The hostname shown on the CGI pages.

+            

+
+            
Type of value:

+
+            

+              
Text

+            

+
+            
Default value:

+
+            

+              
Unset

+            

+
+            
Effect if unset:

+
+            

+              
The hostname provided by the operating system is used.

+            

+
+            
Notes:

+
+            

+              
On some misconfigured systems resolving the hostname fails
+              or takes too much time and slows Privoxy down. Setting a fixed
+              hostname works around the problem.

+
+              
In other circumstances it might be desirable to show a
+              hostname other than the one returned by the operating system.
+              For example if the system has several different hostnames and
+              you don't want to use the first one.

+
+              
Note that Privoxy does not validate the specified hostname
+              value.

+            

+          

+        

+      

+    

+
+    

+      
7.4.
+      Access Control and Security

+
+      
This section of the config file controls the security-relevant
+      aspects of Privoxy's
+      configuration.

+
+      

+        
7.4.1.
+        listen-address

+
+        

+          

+            
Specifies:

+
+            

+              
The address and TCP port on which Privoxy will listen for client
+              requests.

+            

+
+            
Type of value:

+
+            

+              
[IP-Address]:Port

+
+              
[Hostname]:Port

+            

+
+            
Default value:

+
+            

+              
127.0.0.1:8118

+            

+
+            
Effect if unset:

+
+            

+              
Bind to 127.0.0.1 (IPv4 localhost), port 8118. This is
+              suitable and recommended for home users who run Privoxy on the same machine as their
+              browser.

+            

+
+            
Notes:

+
+            

+              
You will need to configure your browser(s) to this proxy
+              address and port.

+
+              
If you already have another service running on port 8118, or
+              if you want to serve requests from other machines (e.g. on your
+              local network) as well, you will need to override the
+              default.

+
+              
You can use this statement multiple times to make
+              Privoxy listen on more ports
+              or more IP addresses. Suitable if
+              your operating system does not support sharing IPv6 and IPv4
+              protocols on the same socket.

+
+              
If a hostname is used instead of an IP address, Privoxy will try to resolve it to an IP
+              address and if there are multiple, use the first one
+              returned.

+
+              
If the address for the hostname isn't already known on the
+              system (for example because it's in /etc/hostname), this may
+              result in DNS traffic.

+
+              
If the specified address isn't available on the system, or
+              if the hostname can't be resolved, Privoxy will fail to start.

+
+              
IPv6 addresses containing colons have to be quoted by
+              brackets. They can only be used if Privoxy has been compiled with IPv6
+              support. If you aren't sure if your version supports it, have a
+              look at http://config.privoxy.org/show-status.

+
+              
Some operating systems will prefer IPv6 to IPv4 addresses
+              even if the system has no IPv6 connectivity which is usually
+              not expected by the user. Some even rely on DNS to resolve
+              localhost which mean the "localhost" address used may not
+              actually be local.

+
+              
It is therefore recommended to explicitly configure the
+              intended IP address instead of relying on the operating system,
+              unless there's a strong reason not to.

+
+              
If you leave out the address, Privoxy will bind to all IPv4 interfaces
+              (addresses) on your machine and may become reachable from the
+              Internet and/or the local network. Be aware that some GNU/Linux
+              distributions modify that behaviour without updating the
+              documentation. Check for non-standard patches if your
+              Privoxy version behaves
+              differently.

+
+              
If you configure Privoxy to
+              be reachable from the network, consider using access control lists (ACL's, see below),
+              and/or a firewall.

+
+              
If you open Privoxy to
+              untrusted users, you will also want to make sure that the
+              following actions are disabled: enable-edit-actions
+              and enable-remote-toggle

+            

+
+            
Example:

+
+            

+              
Suppose you are running Privoxy on a machine which has the address
+              192.168.0.1 on your local private network (192.168.0.0) and has
+              another outside connection with a different address. You want
+              it to serve requests from inside only:

+
+              
+                
+                  
+                
+              

+                    
+  listen-address  192.168.0.1:8118
+

+                  

+
+              
Suppose you are running Privoxy on an IPv6-capable machine and you
+              want it to listen on the IPv6 address of the loopback
+              device:

+
+              
+                
+                  
+                
+              

+                    
+  listen-address [::1]:8118
+

+                  

+            

+          

+        

+      

+
+      

+        
7.4.2. toggle

+
+        

+          

+            
Specifies:

+
+            

+              
Initial state of "toggle" status

+            

+
+            
Type of value:

+
+            

+              
1 or 0

+            

+
+            
Default value:

+
+            

+              
1

+            

+
+            
Effect if unset:

+
+            

+              
Act as if toggled on

+            

+
+            
Notes:

+
+            

+              
If set to 0, Privoxy will
+              start in "toggled off" mode, i.e.
+              mostly behave like a normal, content-neutral proxy with both ad
+              blocking and content filtering disabled. See enable-remote-toggle below.

+            

+          

         

-        

-          

-            7.4.4.
-            enable-remote-http-toggle
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  Whether or not Privoxy recognizes special HTTP headers to
-                  change its behaviour.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  0 or 1
-                

-              

-              

-                Default value:
-              

-              

-                

-                  0
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  Privoxy ignores special HTTP headers.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  When toggled on, the client can change Privoxy's behaviour by setting special
-                  HTTP headers. Currently the only supported special header
-                  is "X-Filter: No", to disable
-                  filtering for the ongoing request, even if it is enabled in
-                  one of the action files.
-                

-                

-                  This feature is disabled by default. If you are using Privoxy in a environment with
-                  trusted clients, you may enable this feature at your
-                  discretion. Note that malicious client side code (e.g Java)
-                  is also capable of using this feature.
-                

-                

-                  This option will be removed in future releases as it has
-                  been obsoleted by the more general header taggers.
-                

-              

-            

-          

+      

+
+      

+        
7.4.3. enable-remote-toggle

+
+        

+          

+            
Specifies:

+
+            

+              
Whether or not the web-based
+              toggle feature may be used

+            

+
+            
Type of value:

+
+            

+              
0 or 1

+            

+
+            
Default value:

+
+            

+              
0

+            

+
+            
Effect if unset:

+
+            

+              
The web-based toggle feature is disabled.

+            

+
+            
Notes:

+
+            

+              
When toggled off, Privoxy
+              mostly acts like a normal, content-neutral proxy, i.e. doesn't
+              block ads or filter content.

+
+              
Access to the toggle feature can not be controlled
+              separately by "ACLs" or HTTP
+              authentication, so that everybody who can access Privoxy (see "ACLs" and listen-address above) can toggle it for all
+              users. So this option is not recommended for multi-user
+              environments with untrusted users.

+
+              
Note that malicious client side code (e.g Java) is also
+              capable of using this option.

+
+              
As a lot of Privoxy users
+              don't read documentation, this feature is disabled by
+              default.

+
+              
Note that you must have compiled Privoxy with support for this feature,
+              otherwise this option has no effect.

+            

+          

         

-        

-          

-            7.4.5. enable-edit-actions
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  Whether or not the web-based actions file editor may be used
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  0 or 1
-                

-              

-              

-                Default value:
-              

-              

-                

-                  0
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  The web-based actions file editor is disabled.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  Access to the editor can not be controlled separately by "ACLs" or HTTP authentication, so that
-                  everybody who can access Privoxy (see "ACLs" and listen-address above) can modify its
-                  configuration for all users.
-                

-                

-                  This option is not recommended for environments with
-                  untrusted users and as a lot of Privoxy users don't read
-                  documentation, this feature is disabled by default.
-                

-                

-                  Note that malicious client side code (e.g Java) is also
-                  capable of using the actions editor and you shouldn't
-                  enable this options unless you understand the consequences
-                  and are sure your browser is configured correctly.
-                

-                

-                  Note that you must have compiled Privoxy with support for this feature,
-                  otherwise this option has no effect.
-                

-              

-            

-          

+      

+
+      

+        
7.4.4. enable-remote-http-toggle

+
+        

+          

+            
Specifies:

+
+            

+              
Whether or not Privoxy recognizes special HTTP headers to
+              change its behaviour.

+            

+
+            
Type of value:

+
+            

+              
0 or 1

+            

+
+            
Default value:

+
+            

+              
0

+            

+
+            
Effect if unset:

+
+            

+              
Privoxy ignores special HTTP headers.

+            

+
+            
Notes:

+
+            

+              
When toggled on, the client can change Privoxy's behaviour by setting special
+              HTTP headers. Currently the only supported special header is
+              "X-Filter: No", to disable filtering
+              for the ongoing request, even if it is enabled in one of the
+              action files.

+
+              
This feature is disabled by default. If you are using
+              Privoxy in a environment with
+              trusted clients, you may enable this feature at your
+              discretion. Note that malicious client side code (e.g Java) is
+              also capable of using this feature.

+
+              
This option will be removed in future releases as it has
+              been obsoleted by the more general header taggers.

+            

+          

         

-        

-          

-            7.4.6. enforce-blocks
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  Whether the user is allowed to ignore blocks and can "go there anyway".
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  0 or 1
-                

-              

-              

-                Default value:
-              

-              

-                

-                  0
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  Blocks are not enforced.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  Privoxy is mainly used to
-                  block and filter requests as a service to the user, for
-                  example to block ads and other junk that clogs the pipes.
-                  Privoxy's configuration
-                  isn't perfect and sometimes innocent pages are blocked. In
-                  this situation it makes sense to allow the user to enforce
-                  the request and have Privoxy ignore the block.
-                

-                

-                  In the default configuration Privoxy's "Blocked" page contains a "go there anyway" link to adds a special
-                  string (the force prefix) to the request URL. If that link
-                  is used, Privoxy will
-                  detect the force prefix, remove it again and let the
-                  request pass.
-                

-                

-                  Of course Privoxy can also
-                  be used to enforce a network policy. In that case the user
-                  obviously should not be able to bypass any blocks, and
-                  that's what the "enforce-blocks"
-                  option is for. If it's enabled, Privoxy hides the "go there anyway" link. If the user adds the
-                  force prefix by hand, it will not be accepted and the
-                  circumvention attempt is logged.
-                

-              

-              

-                Examples:
-              

-              

-                

-                  enforce-blocks 1
-                

-              

-            

-          

+      

+
+      

+        
7.4.5. enable-edit-actions

+
+        

+          

+            
Specifies:

+
+            

+              
Whether or not the web-based
+              actions file editor may be used

+            

+
+            
Type of value:

+
+            

+              
0 or 1

+            

+
+            
Default value:

+
+            

+              
0

+            

+
+            
Effect if unset:

+
+            

+              
The web-based actions file editor is disabled.

+            

+
+            
Notes:

+
+            

+              
Access to the editor can not be controlled separately by
+              "ACLs" or HTTP authentication, so
+              that everybody who can access Privoxy (see "ACLs" and listen-address above) can modify its
+              configuration for all users.

+
+              
This option is not recommended for environments with
+              untrusted users and as a lot of Privoxy users don't read documentation,
+              this feature is disabled by default.

+
+              
Note that malicious client side code (e.g Java) is also
+              capable of using the actions editor and you shouldn't enable
+              this options unless you understand the consequences and are
+              sure your browser is configured correctly.

+
+              
Note that you must have compiled Privoxy with support for this feature,
+              otherwise this option has no effect.

+            

+          

         

-        

-          

-            7.4.7. ACLs: permit-access and deny-access
-          

-          
-          

-            

-              

-                Specifies:
-              

-              

-                

-                  Who can access what.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  src_addr[:port][/src_masklen] [dst_addr[:port][/dst_masklen]]
-                

-                

-                  Where src_addr and dst_addr are IPv4 addresses
-                  in dotted decimal notation or valid DNS names, port is a port number, and src_masklen and dst_masklen are subnet masks in
-                  CIDR notation, i.e. integer values from 2 to 30
-                  representing the length (in bits) of the network address.
-                  The masks and the whole destination part are optional.
-                

-                

-                  If your system implements RFC
-                  3493, then src_addr
-                  and dst_addr can be
-                  IPv6 addresses delimeted by brackets, port can be a number or a service
-                  name, and src_masklen
-                  and dst_masklen can be
-                  a number from 0 to 128.
-                

-              

-              

-                Default value:
-              

-              

-                

-                  Unset
-                

-                

-                  If no port is
-                  specified, any port will match. If no src_masklen or src_masklen is given, the
-                  complete IP address has to match (i.e. 32 bits for IPv4 and
-                  128 bits for IPv6).
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  Don't restrict access further than implied by listen-address
-                

-              

-              

-                Notes:
-              

-              

-                

-                  Access controls are included at the request of ISPs and
-                  systems administrators, and are not usually needed by individual
-                  users. For a typical home user, it will normally
-                  suffice to ensure that Privoxy only listens on the localhost
-                  (127.0.0.1) or internal (home) network address by means of
-                  the listen-address option.
-                

-                

-                  Please see the warnings in the FAQ that Privoxy is not intended to be a
-                  substitute for a firewall or to encourage anyone to defer
-                  addressing basic security weaknesses.
-                

-                

-                  Multiple ACL lines are OK. If any ACLs are specified, Privoxy only talks to IP
-                  addresses that match at least one permit-access line and don't match any
-                  subsequent deny-access line. In
-                  other words, the last match wins, with the default being
-                  deny-access.
-                

-                

-                  If Privoxy is using a
-                  forwarder (see forward below) for
-                  a particular destination URL, the dst_addr that is examined is the
-                  address of the forwarder and NOT the address of the ultimate
-                  target. This is necessary because it may be impossible for
-                  the local Privoxy to
-                  determine the IP address of the ultimate target (that's
-                  often what gateways are used for).
-                

-                

-                  You should prefer using IP addresses over DNS names,
-                  because the address lookups take time. All DNS names must
-                  resolve! You can not use domain patterns like "*.org" or partial domain names. If a
-                  DNS name resolves to multiple IP addresses, only the first
-                  one is used.
-                

-                

-                  Some systems allow IPv4 clients to connect to IPv6 server
-                  sockets. Then the client's IPv4 address will be translated
-                  by the system into IPv6 address space with special prefix
-                  ::ffff:0:0/96 (so called IPv4 mapped IPv6 address). Privoxy can handle it and maps
-                  such ACL addresses automatically.
-                

-                

-                  Denying access to particular sites by ACL may have
-                  undesired side effects if the site in question is hosted on
-                  a machine which also hosts other sites (most sites are).
-                

-              

-              

-                Examples:
-              

-              

-                

-                  Explicitly define the default behavior if no ACL and listen-address are set: "localhost" is OK. The absence of a dst_addr implies that all
-                  destination addresses are OK:
-                

-                

-                

-                
-                  
-                    
+                
+              

-
+      
+
+      

+        
7.4.6.
+        enforce-blocks

+
+        

+          

+            
Specifies:

+
+            

+              
Whether the user is allowed to ignore blocks and can
+              "go there anyway".

+            

+
+            
Type of value:

+
+            

+              
0 or 1

+            

+
+            
Default value:

+
+            

+              
0

+            

+
+            
Effect if unset:

+
+            

+              
Blocks are not enforced.

+            

+
+            
Notes:

+
+            

+              
Privoxy is mainly used to
+              block and filter requests as a service to the user, for example
+              to block ads and other junk that clogs the pipes. Privoxy's configuration isn't perfect and
+              sometimes innocent pages are blocked. In this situation it
+              makes sense to allow the user to enforce the request and have
+              Privoxy ignore the block.

+
+              
In the default configuration Privoxy's "Blocked" page contains a "go there anyway" link to adds a special string
+              (the force prefix) to the request URL. If that link is used,
+              Privoxy will detect the force
+              prefix, remove it again and let the request pass.

+
+              
Of course Privoxy can also
+              be used to enforce a network policy. In that case the user
+              obviously should not be able to bypass any blocks, and that's
+              what the "enforce-blocks" option is
+              for. If it's enabled, Privoxy
+              hides the "go there anyway" link. If
+              the user adds the force prefix by hand, it will not be accepted
+              and the circumvention attempt is logged.

+            

+
+            
Examples:

+
+            

+              
enforce-blocks 1

+            

+          

+        

+      

+
+      

+        
7.4.7. ACLs: permit-access
+        and deny-access

+
+        

+          

+            
Specifies:

+
+            

+              
Who can access what.

+            

+
+            
Type of value:

+
+            

+              
src_addr[:port][/src_masklen] [dst_addr[:port][/dst_masklen]]

+
+              
Where src_addr and
+              dst_addr are IPv4 addresses
+              in dotted decimal notation or valid DNS names, port is a port number, and src_masklen and dst_masklen are subnet masks in CIDR
+              notation, i.e. integer values from 2 to 30 representing the
+              length (in bits) of the network address. The masks and the
+              whole destination part are optional.

+
+              
If your system implements RFC
+              3493, then src_addr and
+              dst_addr can be IPv6
+              addresses delimeted by brackets, port can be a number or a service
+              name, and src_masklen and
+              dst_masklen can be a number
+              from 0 to 128.

+            

+
+            
Default value:

+
+            

+              
Unset

+
+              
If no port is specified,
+              any port will match. If no src_masklen or src_masklen is given, the complete IP
+              address has to match (i.e. 32 bits for IPv4 and 128 bits for
+              IPv6).

+            

+
+            
Effect if unset:

+
+            

+              
Don't restrict access further than implied by listen-address

+            

+
+            
Notes:

+
+            

+              
Access controls are included at the request of ISPs and
+              systems administrators, and are not usually needed by individual
+              users. For a typical home user, it will normally
+              suffice to ensure that Privoxy
+              only listens on the localhost (127.0.0.1) or internal (home)
+              network address by means of the listen-address option.

+
+              
Please see the warnings in the FAQ that Privoxy is not intended to be a substitute
+              for a firewall or to encourage anyone to defer addressing basic
+              security weaknesses.

+
+              
Multiple ACL lines are OK. If any ACLs are specified,
+              Privoxy only talks to IP
+              addresses that match at least one permit-access line and don't match any
+              subsequent deny-access line. In other
+              words, the last match wins, with the default being deny-access.

+
+              
If Privoxy is using a
+              forwarder (see forward below) for a
+              particular destination URL, the dst_addr that is examined is the
+              address of the forwarder and NOT the address of the ultimate target.
+              This is necessary because it may be impossible for the local
+              Privoxy to determine the IP
+              address of the ultimate target (that's often what gateways are
+              used for).

+
+              
You should prefer using IP addresses over DNS names, because
+              the address lookups take time. All DNS names must resolve! You
+              can not
+              use domain patterns like "*.org" or
+              partial domain names. If a DNS name resolves to multiple IP
+              addresses, only the first one is used.

+
+              
Some systems allow IPv4 clients to connect to IPv6 server
+              sockets. Then the client's IPv4 address will be translated by
+              the system into IPv6 address space with special prefix
+              ::ffff:0:0/96 (so called IPv4 mapped IPv6 address).
+              Privoxy can handle it and maps
+              such ACL addresses automatically.

+
+              
Denying access to particular sites by ACL may have undesired
+              side effects if the site in question is hosted on a machine
+              which also hosts other sites (most sites are).

+            

+
+            
Examples:

+
+            

+              
Explicitly define the default behavior if no ACL and
+              listen-address are set: "localhost" is OK. The absence of a dst_addr implies that all destination
+              addresses are OK:

+
+              
+                
+                  
-                  
-                

+                    
   permit-access  localhost
 

-                    

+                  

 
-                

-                  Allow any host on the same class C subnet as
-                  www.privoxy.org access to nothing but www.example.com (or
-                  other domains hosted on the same system):
-                

-                

-                

-                
-                  
-                    
+                
+              

-
+              
Allow any host on the same class C subnet as www.privoxy.org
+              access to nothing but www.example.com (or other domains hosted
+              on the same system):

+
+              
+                
+                  
-                  
-                

+                    
   permit-access  www.privoxy.org/24 www.example.com/32
 

-                    

+                  

 
-                

-                  Allow access from any host on the 26-bit subnet
-                  192.168.45.64 to anywhere, with the exception that
-                  192.168.45.73 may not access the IP address behind
-                  www.dirty-stuff.example.com:
-                

-                

-                

-                
-                  
-                    
+                
+              

-
+              
Allow access from any host on the 26-bit subnet
+              192.168.45.64 to anywhere, with the exception that
+              192.168.45.73 may not access the IP address behind
+              www.dirty-stuff.example.com:

+
+              
+                
+                  
-                  
-                

+                    
   permit-access  192.168.45.64/26
   deny-access    192.168.45.73    www.dirty-stuff.example.com
 

-                    

+                  

 
-                

-                  Allow access from the IPv4 network 192.0.2.0/24 even if
-                  listening on an IPv6 wild card address (not supported on
-                  all platforms):
-                

-                

-                

-                
-                  
-                    
+                
+              

-
+              
Allow access from the IPv4 network 192.0.2.0/24 even if
+              listening on an IPv6 wild card address (not supported on all
+              platforms):

+
+              
+                
+                  
-                  
-                

+                    
   permit-access  192.0.2.0/24
 

-                    

+                  

 
-                

-                  This is equivalent to the following line even if listening
-                  on an IPv4 address (not supported on all platforms):
-                

-                

-                

-                
-                  
-                    
+                
+              

-
+              
This is equivalent to the following line even if listening
+              on an IPv4 address (not supported on all platforms):

+
+              
+                
+                  
-                  
-                

+                    
   permit-access  [::ffff:192.0.2.0]/120
 

-                    

-              
-            
-          
+                  

+            

+          

+        

+      

+
+      

+        
7.4.8.
+        buffer-limit

+
+        

+          

+            
Specifies:

+
+            

+              
Maximum size of the buffer for content filtering.

+            

+
+            
Type of value:

+
+            

+              
Size in Kbytes

+            

+
+            
Default value:

+
+            

+              
4096

+            

+
+            
Effect if unset:

+
+            

+              
Use a 4MB (4096 KB) limit.

+            

+
+            
Notes:

+
+            

+              
For content filtering, i.e. the +filter and +deanimate-gif actions, it is necessary that
+              Privoxy buffers the entire
+              document body. This can be potentially dangerous, since a
+              server could just keep sending data indefinitely and wait for
+              your RAM to exhaust -- with nasty consequences. Hence this
+              option.

+
+              
When a document buffer size reaches the buffer-limit, it is flushed to the client
+              unfiltered and no further attempt to filter the rest of the
+              document is made. Remember that there may be multiple threads
+              running, which might require up to buffer-limit Kbytes each, unless you have
+              enabled "single-threaded" above.

+            

+          

         

-        

-          

-            7.4.8. buffer-limit
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  Maximum size of the buffer for content filtering.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  Size in Kbytes
-                

-              

-              

-                Default value:
-              

-              

-                

-                  4096
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  Use a 4MB (4096 KB) limit.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  For content filtering, i.e. the +filter and +deanimate-gif actions, it is necessary that
-                  Privoxy buffers the entire
-                  document body. This can be potentially dangerous, since a
-                  server could just keep sending data indefinitely and wait
-                  for your RAM to exhaust -- with nasty consequences. Hence
-                  this option.
-                

-                

-                  When a document buffer size reaches the buffer-limit, it is flushed to the client
-                  unfiltered and no further attempt to filter the rest of the
-                  document is made. Remember that there may be multiple
-                  threads running, which might require up to buffer-limit Kbytes each, unless you
-                  have enabled "single-threaded"
-                  above.
-                

-              

-            

-          

+      

+
+      

+        
7.4.9.
+        enable-proxy-authentication-forwarding

+
+        

+          

+            
Specifies:

+
+            

+              
Whether or not proxy authentication through Privoxy should work.

+            

+
+            
Type of value:

+
+            

+              
0 or 1

+            

+
+            
Default value:

+
+            

+              
0

+            

+
+            
Effect if unset:

+
+            

+              
Proxy authentication headers are removed.

+            

+
+            
Notes:

+
+            

+              
Privoxy itself does not support proxy authentication, but
+              can allow clients to authenticate against Privoxy's parent
+              proxy.

+
+              
By default Privoxy (3.0.21 and later) don't do that and
+              remove Proxy-Authorization headers in requests and
+              Proxy-Authenticate headers in responses to make it harder for
+              malicious sites to trick inexperienced users into providing
+              login information.

+
+              
If this option is enabled the headers are forwarded.

+
+              
Enabling this option is not recommended if there is no parent
+              proxy that requires authentication or if the local network
+              between Privoxy and the parent proxy isn't trustworthy. If
+              proxy authentication is only required for some requests, it is
+              recommended to use a client header filter to remove the
+              authentication headers for requests where they aren't
+              needed.

+            

+          

         

-        

-          

-            7.4.9.
-            enable-proxy-authentication-forwarding
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  Whether or not proxy authentication through Privoxy should work.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  0 or 1
-                

-              

-              

-                Default value:
-              

-              

-                

-                  0
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  Proxy authentication headers are removed.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  Privoxy itself does not support proxy authentication, but
-                  can allow clients to authenticate against Privoxy's parent
-                  proxy.
-                

-                

-                  By default Privoxy (3.0.21 and later) don't do that and
-                  remove Proxy-Authorization headers in requests and
-                  Proxy-Authenticate headers in responses to make it harder
-                  for malicious sites to trick inexperienced users into
-                  providing login information.
-                

-                

-                  If this option is enabled the headers are forwarded.
-                

-                

-                  Enabling this option is not recommended if there is no parent
-                  proxy that requires authentication or if the local network
-                  between Privoxy and the parent proxy isn't trustworthy. If
-                  proxy authentication is only required for some requests, it
-                  is recommended to use a client header filter to remove the
-                  authentication headers for requests where they aren't
-                  needed.
-                

-              

-            

-          

+      

+    

+
+    

+      
7.5.
+      Forwarding

+
+      
This feature allows routing of HTTP requests through a chain of
+      multiple proxies.

+
+      
Forwarding can be used to chain Privoxy with a caching proxy to
+      speed up browsing. Using a parent proxy may also be necessary if the
+      machine that Privoxy runs on has no
+      direct Internet access.

+
+      
Note that parent proxies can severely decrease your privacy level.
+      For example a parent proxy could add your IP address to the request
+      headers and if it's a caching proxy it may add the "Etag" header to revalidation requests again, even
+      though you configured Privoxy to remove it. It may also ignore
+      Privoxy's header time randomization and use the original values which
+      could be used by the server as cookie replacement to track your steps
+      between visits.

+
+      
Also specified here are SOCKS proxies. Privoxy supports the SOCKS 4 and SOCKS 4A
+      protocols.

+
+      

+        
7.5.1.
+        forward

+
+        

+          

+            
Specifies:

+
+            

+              
To which parent HTTP proxy specific requests should be
+              routed.

+            

+
+            
Type of value:

+
+            

+              
target_pattern
+              http_parent[:port]

+
+              
where target_pattern is
+              a URL pattern that
+              specifies to which requests (i.e. URLs) this forward rule shall
+              apply. Use / to denote "all URLs". http_parent[:port] is the DNS name or IP address
+              of the parent HTTP proxy through which the requests should be
+              forwarded, optionally followed by its listening port (default:
+              8000). Use a single dot (.) to denote
+              "no forwarding".

+            

+
+            
Default value:

+
+            

+              
Unset

+            

+
+            
Effect if unset:

+
+            

+              
Don't use parent HTTP proxies.

+            

+
+            
Notes:

+
+            

+              
If http_parent is
+              ".", then requests are not forwarded
+              to another HTTP proxy but are made directly to the web
+              servers.

+
+              
http_parent can be a
+              numerical IPv6 address (if RFC 3493
+              is implemented). To prevent clashes with the port delimiter,
+              the whole IP address has to be put into brackets. On the other
+              hand a target_pattern
+              containing an IPv6 address has to be put into angle brackets
+              (normal brackets are reserved for regular expressions
+              already).

+
+              
Multiple lines are OK, they are checked in sequence, and the
+              last match wins.

+            

+
+            
Examples:

+
+            

+              
Everything goes to an example parent proxy, except SSL on
+              port 443 (which it doesn't handle):

+
+              
+                
+                  
+                
+              

+                    
+  forward   /      parent-proxy.example.org:8080
+  forward   :443   .
+

+                  

+
+              
Everything goes to our example ISP's caching proxy, except
+              for requests to that ISP's sites:

+
+              
+                
+                  
+                
+              

+                    
+  forward   /                  caching-proxy.isp.example.net:8000
+  forward   .isp.example.net   .
+

+                  

+
+              
Parent proxy specified by an IPv6 address:

+
+              
+                
+                  
+                
+              

+                    
+  forward   /                   [2001:DB8::1]:8000
+

+                  

+
+              
Suppose your parent proxy doesn't support IPv6:

+
+              
+                
+                  
+                
+              

+                    
+  forward  /                        parent-proxy.example.org:8000
+  forward  ipv6-server.example.org  .
+  forward  <[2-3][0-9a-f][0-9a-f][0-9a-f]:*>   .
+

+                  

+            

+          

+        

+      

+
+      

+        
7.5.2. forward-socks4,
+        forward-socks4a, forward-socks5 and forward-socks5t

+
+        

+          

+            
Specifies:

+
+            

+              
Through which SOCKS proxy (and optionally to which parent
+              HTTP proxy) specific requests should be routed.

+            

+
+            
Type of value:

+
+            

+              
target_pattern
+              socks_proxy[:port] http_parent[:port]

+
+              
where target_pattern is
+              a URL pattern that
+              specifies to which requests (i.e. URLs) this forward rule shall
+              apply. Use / to denote "all URLs". http_parent and socks_proxy are IP addresses in
+              dotted decimal notation or valid DNS names (http_parent may be "." to denote "no HTTP
+              forwarding"), and the optional port parameters are TCP ports, i.e.
+              integer values from 1 to 65535

+            

+
+            
Default value:

+
+            

+              
Unset

+            

+
+            
Effect if unset:

+
+            

+              
Don't use SOCKS proxies.

+            

+
+            
Notes:

+
+            

+              
Multiple lines are OK, they are checked in sequence, and the
+              last match wins.

+
+              
The difference between forward-socks4 and forward-socks4a is that in the SOCKS 4A
+              protocol, the DNS resolution of the target hostname happens on
+              the SOCKS server, while in SOCKS 4 it happens locally.

+
+              
With forward-socks5 the DNS
+              resolution will happen on the remote server as well.

+
+              
forward-socks5t works like vanilla
+              forward-socks5 but lets Privoxy additionally use Tor-specific
+              SOCKS extensions. Currently the only supported SOCKS extension
+              is optimistic data which can reduce the latency for the first
+              request made on a newly created connection.

+
+              
socks_proxy and
+              http_parent can be a
+              numerical IPv6 address (if RFC 3493
+              is implemented). To prevent clashes with the port delimiter,
+              the whole IP address has to be put into brackets. On the other
+              hand a target_pattern
+              containing an IPv6 address has to be put into angle brackets
+              (normal brackets are reserved for regular expressions
+              already).

+
+              
If http_parent is
+              ".", then requests are not forwarded
+              to another HTTP proxy but are made (HTTP-wise) directly to the
+              web servers, albeit through a SOCKS proxy.

+            

+
+            
Examples:

+
+            

+              
From the company example.com, direct connections are made to
+              all "internal" domains, but
+              everything outbound goes through their ISP's proxy by way of
+              example.com's corporate SOCKS 4A gateway to the Internet.

+
+              
+                
+                  
+                
+              

+                    
+  forward-socks4a   /              socks-gw.example.com:1080  www-cache.isp.example.net:8080
+  forward           .example.com   .
+

+                  

+
+              
A rule that uses a SOCKS 4 gateway for all destinations but
+              no HTTP parent looks like this:

+
+              
+                
+                  
+                
+              

+                    
+  forward-socks4   /               socks-gw.example.com:1080  .
+

+                  

+
+              
To chain Privoxy and Tor, both running on the same system,
+              you would use something like:

+
+              
+                
+                  
+                
+              

+                    
+  forward-socks5t   /               127.0.0.1:9050 .
+

+                  

+
+              
Note that if you got Tor through one of the bundles, you may
+              have to change the port from 9050 to 9150 (or even another
+              one). For details, please check the documentation on the
+              Tor
+              website.

+
+              
The public Tor network
+              can't be used to reach your local network, if you need to
+              access local servers you therefore might want to make some
+              exceptions:

+
+              
+                
+                  
+                
+              

+                    
+  forward         192.168.*.*/     .
+  forward            10.*.*.*/     .
+  forward           127.*.*.*/     .
+

+                  

+
+              
Unencrypted connections to systems in these address ranges
+              will be as (un)secure as the local network is, but the
+              alternative is that you can't reach the local network through
+              Privoxy at all. Of course this
+              may actually be desired and there is no reason to make these
+              exceptions if you aren't sure you need them.

+
+              
If you also want to be able to reach servers in your local
+              network by using their names, you will need additional
+              exceptions that look like this:

+
+              
+                
+                  
+                
+              

+                    
+ forward           localhost/     .
+

+                  

+            

+          

+        

+      

+
+      

+        
7.5.3. Advanced Forwarding
+        Examples

+
+        
If you have links to multiple ISPs that provide various special
+        content only to their subscribers, you can configure multiple
+        Privoxies which have connections to
+        the respective ISPs to act as forwarders to each other, so that
+        your users can
+        see the internal content of all ISPs.

+
+        
Assume that host-a has a PPP connection to isp-a.example.net. And
+        host-b has a PPP connection to isp-b.example.org. Both run
+        Privoxy. Their forwarding
+        configuration can look like this:

+
+        
host-a:

+
+        
+          
+            
+          
+        

+              
+  forward    /           .
+  forward    .isp-b.example.net  host-b:8118
+

+            

+
+        
host-b:

+
+        
+          
+            
+          
+        

+              
+  forward    /           .
+  forward    .isp-a.example.org  host-a:8118
+

+            

+
+        
Now, your users can set their browser's proxy to use either host-a
+        or host-b and be able to browse the internal content of both isp-a
+        and isp-b.

+
+        
If you intend to chain Privoxy
+        and squid locally, then chaining as
+        browser -> squid -> privoxy is the
+        recommended way.

+
+        
Assuming that Privoxy and
+        squid run on the same box, your
+        squid configuration could then look
+        like this:

+
+        
+          
+            
+          
+        

+              
+  # Define Privoxy as parent proxy (without ICP)
+  cache_peer 127.0.0.1 parent 8118 7 no-query
+
+  # Define ACL for protocol FTP
+  acl ftp proto FTP
+
+  # Do not forward FTP requests to Privoxy
+  always_direct allow ftp
+
+  # Forward all the rest to Privoxy
+  never_direct allow all
+

+            

+
+        
You would then need to change your browser's proxy settings to
+        squid's address and port. Squid
+        normally uses port 3128. If unsure consult http_port in squid.conf.

+
+        
You could just as well decide to only forward requests you suspect
+        of leading to Windows executables through a virus-scanning parent
+        proxy, say, on antivir.example.com, port
+        8010:

+
+        
+          
+            
+          
+        

+              
+  forward   /                          .
+  forward   /.*\.(exe|com|dll|zip)$    antivir.example.com:8010
+

+            

+      

+
+      

+        
7.5.4. forwarded-connect-retries

+
+        

+          

+            
Specifies:

+
+            

+              
How often Privoxy retries if a forwarded connection request
+              fails.

+            

+
+            
Type of value:

+
+            

+              
Number of retries.

+            

+
+            
Default value:

+
+            

+              
0

+            

+
+            
Effect if unset:

+
+            

+              
Connections forwarded through other proxies are treated like
+              direct connections and no retry attempts are made.

+            

+
+            
Notes:

+
+            

+              
forwarded-connect-retries is mainly
+              interesting for socks4a connections, where Privoxy can't detect why the connections
+              failed. The connection might have failed because of a DNS
+              timeout in which case a retry makes sense, but it might also
+              have failed because the server doesn't exist or isn't
+              reachable. In this case the retry will just delay the
+              appearance of Privoxy's error message.

+
+              
Note that in the context of this option, "forwarded connections" includes all connections
+              that Privoxy forwards through other proxies. This option is not
+              limited to the HTTP CONNECT method.

+
+              
Only use this option, if you are getting lots of
+              forwarding-related error messages that go away when you try
+              again manually. Start with a small value and check Privoxy's
+              logfile from time to time, to see how many retries are usually
+              needed.

+            

+
+            
Examples:

+
+            

+              
forwarded-connect-retries 1

+            

+          

+        

+      

+    

+
+    

+      
7.6. Miscellaneous

+
+      

+        
7.6.1.
+        accept-intercepted-requests

+
+        

+          

+            
Specifies:

+
+            

+              
Whether intercepted requests should be treated as valid.

+            

+
+            
Type of value:

+
+            

+              
0 or 1

+            

+
+            
Default value:

+
+            

+              
0

+            

+
+            
Effect if unset:

+
+            

+              
Only proxy requests are accepted, intercepted requests are
+              treated as invalid.

+            

+
+            
Notes:

+
+            

+              
If you don't trust your clients and want to force them to
+              use Privoxy, enable this
+              option and configure your packet filter to redirect outgoing
+              HTTP connections into Privoxy.

+
+              
Note that intercepting encrypted connections (HTTPS) isn't
+              supported.

+
+              
Make sure that Privoxy's
+              own requests aren't redirected as well. Additionally take care
+              that Privoxy can't
+              intentionally connect to itself, otherwise you could run into
+              redirection loops if Privoxy's
+              listening port is reachable by the outside or an attacker has
+              access to the pages you visit.

+
+              
If you are running Privoxy as intercepting proxy without
+              being able to intercept all client requests you may want to
+              adjust the CGI templates to make sure they don't reference
+              content from config.privoxy.org.

+            

+
+            
Examples:

+
+            

+              
accept-intercepted-requests 1

+            

+          

+        

+      

+
+      

+        
7.6.2.
+        allow-cgi-request-crunching

+
+        

+          

+            
Specifies:

+
+            

+              
Whether requests to Privoxy's CGI pages can be blocked or
+              redirected.

+            

+
+            
Type of value:

+
+            

+              
0 or 1

+            

+
+            
Default value:

+
+            

+              
0

+            

+
+            
Effect if unset:

+
+            

+              
Privoxy ignores block and
+              redirect actions for its CGI pages.

+            

+
+            
Notes:

+
+            

+              
By default Privoxy ignores
+              block or redirect actions for its CGI pages. Intercepting these
+              requests can be useful in multi-user setups to implement
+              fine-grained access control, but it can also render the
+              complete web interface useless and make debugging problems
+              painful if done without care.

+
+              
Don't enable this option unless you're sure that you really
+              need it.

+            

+
+            
Examples:

+
+            

+              
allow-cgi-request-crunching 1

+            

+          

+        

+      

+
+      

+        
7.6.3. split-large-forms

+
+        

+          

+            
Specifies:

+
+            

+              
Whether the CGI interface should stay compatible with broken
+              HTTP clients.

+            

+
+            
Type of value:

+
+            

+              
0 or 1

+            

+
+            
Default value:

+
+            

+              
0

+            

+
+            
Effect if unset:

+
+            

+              
The CGI form generate long GET URLs.

+            

+
+            
Notes:

+
+            

+              
Privoxy's CGI forms can
+              lead to rather long URLs. This isn't a problem as far as the
+              HTTP standard is concerned, but it can confuse clients with
+              arbitrary URL length limitations.

+
+              
Enabling split-large-forms causes Privoxy to divide big forms into smaller
+              ones to keep the URL length down. It makes editing a lot less
+              convenient and you can no longer submit all changes at once,
+              but at least it works around this browser bug.

+
+              
If you don't notice any editing problems, there is no reason
+              to enable this option, but if one of the submit buttons appears
+              to be broken, you should give it a try.

+            

+
+            
Examples:

+
+            

+              
split-large-forms 1

+            

+          

+        

+      

+
+      

+        
7.6.4. keep-alive-timeout

+
+        

+          

+            
Specifies:

+
+            

+              
Number of seconds after which an open connection will no
+              longer be reused.

+            

+
+            
Type of value:

+
+            

+              
Time in seconds.

+            

+
+            
Default value:

+
+            

+              
None

+            

+
+            
Effect if unset:

+
+            

+              
Connections are not kept alive.

+            

+
+            
Notes:

+
+            

+              
This option allows clients to keep the connection to
+              Privoxy alive. If the server
+              supports it, Privoxy will keep
+              the connection to the server alive as well. Under certain
+              circumstances this may result in speed-ups.

+
+              
By default, Privoxy will
+              close the connection to the server if the client connection
+              gets closed, or if the specified timeout has been reached
+              without a new request coming in. This behaviour can be changed
+              with the connection-sharing option.

+
+              
This option has no effect if Privoxy has been compiled without
+              keep-alive support.

+
+              
Note that a timeout of five seconds as used in the default
+              configuration file significantly decreases the number of
+              connections that will be reused. The value is used because some
+              browsers limit the number of connections they open to a single
+              host and apply the same limit to proxies. This can result in a
+              single website "grabbing" all the
+              connections the browser allows, which means connections to
+              other websites can't be opened until the connections currently
+              in use time out.

+
+              
Several users have reported this as a Privoxy bug, so the
+              default value has been reduced. Consider increasing it to 300
+              seconds or even more if you think your browser can handle it.
+              If your browser appears to be hanging, it probably can't.

+            

+
+            
Examples:

+
+            

+              
keep-alive-timeout 300

+            

+          

+        

+      

+
+      

+        
7.6.5. tolerate-pipelining

+
+        

+          

+            
Specifies:

+
+            

+              
Whether or not pipelined requests should be served.

+            

+
+            
Type of value:

+
+            

+              
0 or 1.

+            

+
+            
Default value:

+
+            

+              
None

+            

+
+            
Effect if unset:

+
+            

+              
If Privoxy receives more than one request at once, it
+              terminates the client connection after serving the first
+              one.

+            

+
+            
Notes:

+
+            

+              
Privoxy currently doesn't
+              pipeline outgoing requests, thus allowing pipelining on the
+              client connection is not guaranteed to improve the
+              performance.

+
+              
By default Privoxy tries to
+              discourage clients from pipelining by discarding aggressively
+              pipelined requests, which forces the client to resend them
+              through a new connection.

+
+              
This option lets Privoxy
+              tolerate pipelining. Whether or not that improves performance
+              mainly depends on the client configuration.

+
+              
If you are seeing problems with pages not properly loading,
+              disabling this option could work around the problem.

+            

+
+            
Examples:

+
+            

+              
tolerate-pipelining 1

+            

+          

+        

+      

+
+      

+        
7.6.6. default-server-timeout

+
+        

+          

+            
Specifies:

+
+            

+              
Assumed server-side keep-alive timeout if not specified by
+              the server.

+            

+
+            
Type of value:

+
+            

+              
Time in seconds.

+            

+
+            
Default value:

+
+            

+              
None

+            

+
+            
Effect if unset:

+
+            

+              
Connections for which the server didn't specify the
+              keep-alive timeout are not reused.

+            

+
+            
Notes:

+
+            

+              
Enabling this option significantly increases the number of
+              connections that are reused, provided the keep-alive-timeout
+              option is also enabled.

+
+              
While it also increases the number of connections problems
+              when Privoxy tries to reuse a
+              connection that already has been closed on the server side, or
+              is closed while Privoxy is
+              trying to reuse it, this should only be a problem if it happens
+              for the first request sent by the client. If it happens for
+              requests on reused client connections, Privoxy will simply close the connection
+              and the client is supposed to retry the request without
+              bothering the user.

+
+              
Enabling this option is therefore only recommended if the
+              connection-sharing option is disabled.

+
+              
It is an error to specify a value larger than the keep-alive-timeout
+              value.

+
+              
This option has no effect if Privoxy has been compiled without
+              keep-alive support.

+            

+
+            
Examples:

+
+            

+              
default-server-timeout 60

+            

+          

+        

+      

+
+      

+        
7.6.7. connection-sharing

+
+        

+          

+            
Specifies:

+
+            

+              
Whether or not outgoing connections that have been kept
+              alive should be shared between different incoming
+              connections.

+            

+
+            
Type of value:

+
+            

+              
0 or 1

+            

+
+            
Default value:

+
+            

+              
None

+            

+
+            
Effect if unset:

+
+            

+              
Connections are not shared.

+            

+
+            
Notes:

+
+            

+              
This option has no effect if Privoxy has been compiled without
+              keep-alive support, or if it's disabled.

+            

+
+            
Notes:

+
+            

+              
Note that reusing connections doesn't necessary cause
+              speedups. There are also a few privacy implications you should
+              be aware of.

+
+              
If this option is effective, outgoing connections are shared
+              between clients (if there are more than one) and closing the
+              browser that initiated the outgoing connection does no longer
+              affect the connection between Privoxy and the server unless the client's
+              request hasn't been completed yet.

+
+              
If the outgoing connection is idle, it will not be closed
+              until either Privoxy's or the
+              server's timeout is reached. While it's open, the server knows
+              that the system running Privoxy is still there.

+
+              
If there are more than one client (maybe even belonging to
+              multiple users), they will be able to reuse each others
+              connections. This is potentially dangerous in case of
+              authentication schemes like NTLM where only the connection is
+              authenticated, instead of requiring authentication for each
+              request.

+
+              
If there is only a single client, and if said client can
+              keep connections alive on its own, enabling this option has
+              next to no effect. If the client doesn't support connection
+              keep-alive, enabling this option may make sense as it allows
+              Privoxy to keep outgoing
+              connections alive even if the client itself doesn't support
+              it.

+
+              
You should also be aware that enabling this option increases
+              the likelihood of getting the "No server or forwarder data"
+              error message, especially if you are using a slow connection to
+              the Internet.

+
+              
This option should only be used by experienced users who
+              understand the risks and can weight them against the
+              benefits.

+            

+
+            
Examples:

+
+            

+              
connection-sharing 1

+            

+          

+        

+      

+
+      

+        
7.6.8.
+        socket-timeout

+
+        

+          

+            
Specifies:

+
+            

+              
Number of seconds after which a socket times out if no data
+              is received.

+            

+
+            
Type of value:

+
+            

+              
Time in seconds.

+            

+
+            
Default value:

+
+            

+              
None

+            

+
+            
Effect if unset:

+
+            

+              
A default value of 300 seconds is used.

+            

+
+            
Notes:

+
+            

+              
The default is quite high and you probably want to reduce
+              it. If you aren't using an occasionally slow proxy like Tor,
+              reducing it to a few seconds should be fine.

+            

+
+            
Examples:

+
+            

+              
socket-timeout 300

+            

+          

+        

+      

+
+      

+        
7.6.9. max-client-connections

+
+        

+          

+            
Specifies:

+
+            

+              
Maximum number of client connections that will be
+              served.

+            

+
+            
Type of value:

+
+            

+              
Positive number.

+            

+
+            
Default value:

+
+            

+              
128

+            

+
+            
Effect if unset:

+
+            

+              
Connections are served until a resource limit is
+              reached.

+            

+
+            
Notes:

+
+            

+              
Privoxy creates one thread
+              (or process) for every incoming client connection that isn't
+              rejected based on the access control settings.

+
+              
If the system is powerful enough, Privoxy can theoretically deal with
+              several hundred (or thousand) connections at the same time, but
+              some operating systems enforce resource limits by shutting down
+              offending processes and their default limits may be below the
+              ones Privoxy would require
+              under heavy load.

+
+              
Configuring Privoxy to
+              enforce a connection limit below the thread or process limit
+              used by the operating system makes sure this doesn't happen.
+              Simply increasing the operating system's limit would work too,
+              but if Privoxy isn't the only
+              application running on the system, you may actually want to
+              limit the resources used by Privoxy.

+
+              
If Privoxy is only used by
+              a single trusted user, limiting the number of client
+              connections is probably unnecessary. If there are multiple
+              possibly untrusted users you probably still want to
+              additionally use a packet filter to limit the maximal number of
+              incoming connections per client. Otherwise a malicious user
+              could intentionally create a high number of connections to
+              prevent other users from using Privoxy.

+
+              
Obviously using this option only makes sense if you choose a
+              limit below the one enforced by the operating system.

+
+              
One most POSIX-compliant systems Privoxy can't properly deal with more than
+              FD_SETSIZE file descriptors at the same time and has to reject
+              connections if the limit is reached. This will likely change in
+              a future version, but currently this limit can't be increased
+              without recompiling Privoxy
+              with a different FD_SETSIZE limit.

+            

+
+            
Examples:

+
+            

+              
max-client-connections 256

+            

+          

         

       

-      

-        

-          7.5. Forwarding
-        

-        

-          This feature allows routing of HTTP requests through a chain of
-          multiple proxies.
-        

-        

-          Forwarding can be used to chain Privoxy with a caching proxy to
-          speed up browsing. Using a parent proxy may also be necessary if
-          the machine that Privoxy runs on
-          has no direct Internet access.
-        

-        

-          Note that parent proxies can severely decrease your privacy level.
-          For example a parent proxy could add your IP address to the request
-          headers and if it's a caching proxy it may add the "Etag" header to revalidation requests again, even
-          though you configured Privoxy to remove it. It may also ignore
-          Privoxy's header time randomization and use the original values
-          which could be used by the server as cookie replacement to track
-          your steps between visits.
-        

-        

-          Also specified here are SOCKS proxies. Privoxy supports the SOCKS 4 and SOCKS 4A
-          protocols.
-        

-        

-          

-            7.5.1. forward
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  To which parent HTTP proxy specific requests should be
-                  routed.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  target_pattern http_parent[:port]
-                

-                

-                  where target_pattern is
-                  a URL pattern
-                  that specifies to which requests (i.e. URLs) this forward
-                  rule shall apply. Use / to denote
-                  "all URLs". http_parent[:port] is the DNS name or IP
-                  address of the parent HTTP proxy through which the requests
-                  should be forwarded, optionally followed by its listening
-                  port (default: 8000). Use a single dot (.) to denote "no
-                  forwarding".
-                

-              

-              

-                Default value:
-              

-              

-                

-                  Unset
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  Don't use parent HTTP proxies.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  If http_parent is ".", then requests are not forwarded
-                  to another HTTP proxy but are made directly to the web
-                  servers.
-                

-                

-                  http_parent can be a
-                  numerical IPv6 address (if RFC
-                  3493 is implemented). To prevent clashes with the port
-                  delimiter, the whole IP address has to be put into
-                  brackets. On the other hand a target_pattern containing an IPv6
-                  address has to be put into angle brackets (normal brackets
-                  are reserved for regular expressions already).
-                

-                

-                  Multiple lines are OK, they are checked in sequence, and
-                  the last match wins.
-                

-              

-              

-                Examples:
-              

-              

-                

-                  Everything goes to an example parent proxy, except SSL on
-                  port 443 (which it doesn't handle):
-                

-                

-                

-                
-                  
-                    
-                  
-                

-
-  forward   /      parent-proxy.example.org:8080
-  forward   :443   .
-

-                    

 
-                

-                  Everything goes to our example ISP's caching proxy, except
-                  for requests to that ISP's sites:
-                

-                

-                

-                
-                  
-                    
-                  
-                

-
-  forward   /                  caching-proxy.isp.example.net:8000
-  forward   .isp.example.net   .
-

-                    

+      

+        
7.6.10.
+        handle-as-empty-doc-returns-ok

 
-                

-                  Parent proxy specified by an IPv6 address:
-                

-                

-                

-                
-                  
-                    
-                  
-                

-
-  forward   /                   [2001:DB8::1]:8000
-

-                    

+        

+          

+            
Specifies:

 
-                

-                  Suppose your parent proxy doesn't support IPv6:
-                

-                

-                

-                
-                  
-                    
-                  
-                

-
-  forward  /                        parent-proxy.example.org:8000
-  forward  ipv6-server.example.org  .
-  forward  <[2-3][0-9a-f][0-9a-f][0-9a-f]:*>   .
-

-                    

-              

-            

-          

-        

-        

-          

-            7.5.2. forward-socks4, forward-socks4a,
-            forward-socks5 and forward-socks5t
-          

-          
-          

-            

-              

-                Specifies:
-              

-              

-                

-                  Through which SOCKS proxy (and optionally to which parent
-                  HTTP proxy) specific requests should be routed.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  target_pattern socks_proxy[:port] http_parent[:port]
-                

-                

-                  where target_pattern is
-                  a URL pattern
-                  that specifies to which requests (i.e. URLs) this forward
-                  rule shall apply. Use / to denote
-                  "all URLs". http_parent and socks_proxy are IP addresses in
-                  dotted decimal notation or valid DNS names (http_parent may be "." to denote "no HTTP
-                  forwarding"), and the optional port parameters are TCP ports,
-                  i.e. integer values from 1 to 65535
-                

-              

-              

-                Default value:
-              

-              

-                

-                  Unset
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  Don't use SOCKS proxies.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  Multiple lines are OK, they are checked in sequence, and
-                  the last match wins.
-                

-                

-                  The difference between forward-socks4 and forward-socks4a is that in the SOCKS 4A
-                  protocol, the DNS resolution of the target hostname happens
-                  on the SOCKS server, while in SOCKS 4 it happens locally.
-                

-                

-                  With forward-socks5 the DNS
-                  resolution will happen on the remote server as well.
-                

-                

-                  forward-socks5t works like vanilla
-                  forward-socks5 but lets Privoxy additionally use
-                  Tor-specific SOCKS extensions. Currently the only supported
-                  SOCKS extension is optimistic data which can reduce the
-                  latency for the first request made on a newly created
-                  connection.
-                

-                

-                  socks_proxy and http_parent can be a
-                  numerical IPv6 address (if RFC
-                  3493 is implemented). To prevent clashes with the port
-                  delimiter, the whole IP address has to be put into
-                  brackets. On the other hand a target_pattern containing an IPv6
-                  address has to be put into angle brackets (normal brackets
-                  are reserved for regular expressions already).
-                

-                

-                  If http_parent is ".", then requests are not forwarded
-                  to another HTTP proxy but are made (HTTP-wise) directly to
-                  the web servers, albeit through a SOCKS proxy.
-                

-              

-              

-                Examples:
-              

-              

-                

-                  From the company example.com, direct connections are made
-                  to all "internal" domains, but
-                  everything outbound goes through their ISP's proxy by way
-                  of example.com's corporate SOCKS 4A gateway to the
-                  Internet.
-                

-                

-                

-                
-                  
-                    
-                  
-                

-
-  forward-socks4a   /              socks-gw.example.com:1080  www-cache.isp.example.net:8080
-  forward           .example.com   .
-

-                    

+            

+              
The status code Privoxy returns for pages blocked with
+              +handle-as-empty-document.

+            

 
-                

-                  A rule that uses a SOCKS 4 gateway for all destinations but
-                  no HTTP parent looks like this:
-                

-                

-                

-                
-                  
-                    
-                  
-                

-
-  forward-socks4   /               socks-gw.example.com:1080  .
-

-                    

+            
Type of value:

 
-                

-                  To chain Privoxy and Tor, both running on the same system,
-                  you would use something like:
-                

-                

-                

-                
-                  
-                    
-                  
-                

-
-  forward-socks5t   /               127.0.0.1:9050 .
-

-                    

+            

+              
0 or 1

+            

 
-                

-                  Note that if you got Tor through one of the bundles, you
-                  may have to change the port from 9050 to 9150 (or even
-                  another one). For details, please check the documentation
-                  on the Tor
-                  website.
-                

-                

-                  The public Tor network
-                  can't be used to reach your local network, if you need to
-                  access local servers you therefore might want to make some
-                  exceptions:
-                

-                

-                

-                
-                  
-                    
-                  
-                

-
-  forward         192.168.*.*/     .
-  forward            10.*.*.*/     .
-  forward           127.*.*.*/     .
-

-                    

+            
Default value:

 
-                

-                  Unencrypted connections to systems in these address ranges
-                  will be as (un)secure as the local network is, but the
-                  alternative is that you can't reach the local network
-                  through Privoxy at all. Of
-                  course this may actually be desired and there is no reason
-                  to make these exceptions if you aren't sure you need them.
-                

-                

-                  If you also want to be able to reach servers in your local
-                  network by using their names, you will need additional
-                  exceptions that look like this:
-                

-                

-                

-                
-                  
-                    
-                  
-                

-
- forward           localhost/     .
-

-                    

-              
-            

-          

-        

-        

-          

-            7.5.3. Advanced Forwarding
-            Examples
-          

-          

-            If you have links to multiple ISPs that provide various special
-            content only to their subscribers, you can configure multiple
-            Privoxies which have connections
-            to the respective ISPs to act as forwarders to each other, so
-            that your
-            users can see the internal content of all ISPs.
-          

-          

-            Assume that host-a has a PPP connection to isp-a.example.net. And
-            host-b has a PPP connection to isp-b.example.org. Both run Privoxy. Their forwarding
-            configuration can look like this:
-          

-          

-            host-a:
-          

-          

-          

-          
-            
-              
-            
-          

-
-  forward    /           .
-  forward    .isp-b.example.net  host-b:8118
-

-              

-
-          

-            host-b:
-          

-          

-          

-          
-            
-              
-            
-          

-
-  forward    /           .
-  forward    .isp-a.example.org  host-a:8118
-

-              

-
-          

-            Now, your users can set their browser's proxy to use either
-            host-a or host-b and be able to browse the internal content of
-            both isp-a and isp-b.
-          

-          

-            If you intend to chain Privoxy
-            and squid locally, then chaining
-            as browser -> squid -> privoxy is
-            the recommended way.
-          

-          

-            Assuming that Privoxy and squid run on the same box, your squid configuration could then look
-            like this:
-          

-          

-          

-          
-            
-              
-            
-          

-
-  # Define Privoxy as parent proxy (without ICP)
-  cache_peer 127.0.0.1 parent 8118 7 no-query
+            

+              
0

+            

 
-  # Define ACL for protocol FTP
-  acl ftp proto FTP
+            
Effect if unset:

 
-  # Do not forward FTP requests to Privoxy
-  always_direct allow ftp
+            

+              
Privoxy returns a status 403(forbidden) for all blocked
+              pages.

+            

 
-  # Forward all the rest to Privoxy
-  never_direct allow all
-

-              

-
-          

-            You would then need to change your browser's proxy settings to
-            squid's address and port. Squid
-            normally uses port 3128. If unsure consult http_port in squid.conf.
-          

-          

-            You could just as well decide to only forward requests you
-            suspect of leading to Windows executables through a
-            virus-scanning parent proxy, say, on antivir.example.com, port 8010:
-          

-          

-          

-          
-            
-              
-            
-          

-
-  forward   /                          .
-  forward   /.*\.(exe|com|dll|zip)$    antivir.example.com:8010
-

-              

-        

-        

-          

-            7.5.4.
-            forwarded-connect-retries
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  How often Privoxy retries if a forwarded connection request
-                  fails.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  Number of retries.
-                

-              

-              

-                Default value:
-              

-              

-                

-                  0
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  Connections forwarded through other proxies are treated
-                  like direct connections and no retry attempts are made.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  forwarded-connect-retries is
-                  mainly interesting for socks4a connections, where Privoxy can't detect why the
-                  connections failed. The connection might have failed
-                  because of a DNS timeout in which case a retry makes sense,
-                  but it might also have failed because the server doesn't
-                  exist or isn't reachable. In this case the retry will just
-                  delay the appearance of Privoxy's error message.
-                

-                

-                  Note that in the context of this option, "forwarded connections" includes all
-                  connections that Privoxy forwards through other proxies.
-                  This option is not limited to the HTTP CONNECT method.
-                

-                

-                  Only use this option, if you are getting lots of
-                  forwarding-related error messages that go away when you try
-                  again manually. Start with a small value and check
-                  Privoxy's logfile from time to time, to see how many
-                  retries are usually needed.
-                

-              

-              

-                Examples:
-              

-              

-                

-                  forwarded-connect-retries 1
-                

-              

-            

-          

+            
Effect if set:

+
+            

+              
Privoxy returns a status 200(OK) for pages blocked with
+              +handle-as-empty-document and a status 403(Forbidden) for all
+              other blocked pages.

+            

+
+            
Notes:

+
+            

+              
This directive was added as a work-around for Firefox bug
+              492459: "Websites are no longer rendered if
+              SSL requests for JavaScripts are blocked by a proxy."
+              (https://bugzilla.mozilla.org/show_bug.cgi?id=492459),
+              the bug has been fixed for quite some time, but this directive
+              is also useful to make it harder for websites to detect whether
+              or not resources are being blocked.

+            

+          
         

       

-      

-        

-          7.6. Miscellaneous
-        

-        

-          

-            7.6.1.
-            accept-intercepted-requests
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  Whether intercepted requests should be treated as valid.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  0 or 1
-                

-              

-              

-                Default value:
-              

-              

-                

-                  0
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  Only proxy requests are accepted, intercepted requests are
-                  treated as invalid.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  If you don't trust your clients and want to force them to
-                  use Privoxy, enable this
-                  option and configure your packet filter to redirect
-                  outgoing HTTP connections into Privoxy.
-                

-                

-                  Note that intercepting encrypted connections (HTTPS) isn't
-                  supported.
-                

-                

-                  Make sure that Privoxy's
-                  own requests aren't redirected as well. Additionally take
-                  care that Privoxy can't
-                  intentionally connect to itself, otherwise you could run
-                  into redirection loops if Privoxy's listening port is reachable
-                  by the outside or an attacker has access to the pages you
-                  visit.
-                

-                

-                  If you are running Privoxy as intercepting proxy without
-                  being able to intercept all client requests you may want to
-                  adjust the CGI templates to make sure they don't reference
-                  content from config.privoxy.org.
-                

-              

-              

-                Examples:
-              

-              

-                

-                  accept-intercepted-requests 1
-                

-              

-            

-          

-        

-        

-          

-            7.6.2.
-            allow-cgi-request-crunching
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  Whether requests to Privoxy's CGI pages can be blocked or
-                  redirected.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  0 or 1
-                

-              

-              

-                Default value:
-              

-              

-                

-                  0
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  Privoxy ignores block and
-                  redirect actions for its CGI pages.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  By default Privoxy ignores
-                  block or redirect actions for its CGI pages. Intercepting
-                  these requests can be useful in multi-user setups to
-                  implement fine-grained access control, but it can also
-                  render the complete web interface useless and make
-                  debugging problems painful if done without care.
-                

-                

-                  Don't enable this option unless you're sure that you really
-                  need it.
-                

-              

-              

-                Examples:
-              

-              

-                

-                  allow-cgi-request-crunching 1
-                

-              

-            

-          

-        

-        

-          

-            7.6.3. split-large-forms
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  Whether the CGI interface should stay compatible with
-                  broken HTTP clients.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  0 or 1
-                

-              

-              

-                Default value:
-              

-              

-                

-                  0
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  The CGI form generate long GET URLs.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  Privoxy's CGI forms can
-                  lead to rather long URLs. This isn't a problem as far as
-                  the HTTP standard is concerned, but it can confuse clients
-                  with arbitrary URL length limitations.
-                

-                

-                  Enabling split-large-forms causes Privoxy to divide big forms into
-                  smaller ones to keep the URL length down. It makes editing
-                  a lot less convenient and you can no longer submit all
-                  changes at once, but at least it works around this browser
-                  bug.
-                

-                

-                  If you don't notice any editing problems, there is no
-                  reason to enable this option, but if one of the submit
-                  buttons appears to be broken, you should give it a try.
-                

-              

-              

-                Examples:
-              

-              

-                

-                  split-large-forms 1
-                

-              

-            

-          

-        

-        

-          

-            7.6.4. keep-alive-timeout
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  Number of seconds after which an open connection will no
-                  longer be reused.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  Time in seconds.
-                

-              

-              

-                Default value:
-              

-              

-                

-                  None
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  Connections are not kept alive.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  This option allows clients to keep the connection to Privoxy alive. If the server
-                  supports it, Privoxy will
-                  keep the connection to the server alive as well. Under
-                  certain circumstances this may result in speed-ups.
-                

-                

-                  By default, Privoxy will
-                  close the connection to the server if the client connection
-                  gets closed, or if the specified timeout has been reached
-                  without a new request coming in. This behaviour can be
-                  changed with the connection-sharing option.
-                

-                

-                  This option has no effect if Privoxy has been compiled without
-                  keep-alive support.
-                

-                

-                  Note that a timeout of five seconds as used in the default
-                  configuration file significantly decreases the number of
-                  connections that will be reused. The value is used because
-                  some browsers limit the number of connections they open to
-                  a single host and apply the same limit to proxies. This can
-                  result in a single website "grabbing" all the connections the browser
-                  allows, which means connections to other websites can't be
-                  opened until the connections currently in use time out.
-                

-                

-                  Several users have reported this as a Privoxy bug, so the
-                  default value has been reduced. Consider increasing it to
-                  300 seconds or even more if you think your browser can
-                  handle it. If your browser appears to be hanging, it
-                  probably can't.
-                

-              

-              

-                Examples:
-              

-              

-                

-                  keep-alive-timeout 300
-                

-              

-            

-          

-        

-        

-          

-            7.6.5. tolerate-pipelining
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  Whether or not pipelined requests should be served.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  0 or 1.
-                

-              

-              

-                Default value:
-              

-              

-                

-                  None
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  If Privoxy receives more than one request at once, it
-                  terminates the client connection after serving the first
-                  one.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  Privoxy currently doesn't
-                  pipeline outgoing requests, thus allowing pipelining on the
-                  client connection is not guaranteed to improve the
-                  performance.
-                

-                

-                  By default Privoxy tries
-                  to discourage clients from pipelining by discarding
-                  aggressively pipelined requests, which forces the client to
-                  resend them through a new connection.
-                

-                

-                  This option lets Privoxy
-                  tolerate pipelining. Whether or not that improves
-                  performance mainly depends on the client configuration.
-                

-                

-                  If you are seeing problems with pages not properly loading,
-                  disabling this option could work around the problem.
-                

-              

-              

-                Examples:
-              

-              

-                

-                  tolerate-pipelining 1
-                

-              

-            

-          

-        

-        

-          

-            7.6.6.
-            default-server-timeout
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  Assumed server-side keep-alive timeout if not specified by
-                  the server.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  Time in seconds.
-                

-              

-              

-                Default value:
-              

-              

-                

-                  None
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  Connections for which the server didn't specify the
-                  keep-alive timeout are not reused.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  Enabling this option significantly increases the number of
-                  connections that are reused, provided the keep-alive-timeout
-                  option is also enabled.
-                

-                

-                  While it also increases the number of connections problems
-                  when Privoxy tries to
-                  reuse a connection that already has been closed on the
-                  server side, or is closed while Privoxy is trying to reuse it, this
-                  should only be a problem if it happens for the first
-                  request sent by the client. If it happens for requests on
-                  reused client connections, Privoxy will simply close the
-                  connection and the client is supposed to retry the request
-                  without bothering the user.
-                

-                

-                  Enabling this option is therefore only recommended if the
-                  connection-sharing option is disabled.
-                

-                

-                  It is an error to specify a value larger than the keep-alive-timeout
-                  value.
-                

-                

-                  This option has no effect if Privoxy has been compiled without
-                  keep-alive support.
-                

-              

-              

-                Examples:
-              

-              

-                

-                  default-server-timeout 60
-                

-              

-            

-          

-        

-        

-          

-            7.6.7. connection-sharing
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  Whether or not outgoing connections that have been kept
-                  alive should be shared between different incoming
-                  connections.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  0 or 1
-                

-              

-              

-                Default value:
-              

-              

-                

-                  None
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  Connections are not shared.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  This option has no effect if Privoxy has been compiled without
-                  keep-alive support, or if it's disabled.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  Note that reusing connections doesn't necessary cause
-                  speedups. There are also a few privacy implications you
-                  should be aware of.
-                

-                

-                  If this option is effective, outgoing connections are
-                  shared between clients (if there are more than one) and
-                  closing the browser that initiated the outgoing connection
-                  does no longer affect the connection between Privoxy and the server unless the
-                  client's request hasn't been completed yet.
-                

-                

-                  If the outgoing connection is idle, it will not be closed
-                  until either Privoxy's or
-                  the server's timeout is reached. While it's open, the
-                  server knows that the system running Privoxy is still there.
-                

-                

-                  If there are more than one client (maybe even belonging to
-                  multiple users), they will be able to reuse each others
-                  connections. This is potentially dangerous in case of
-                  authentication schemes like NTLM where only the connection
-                  is authenticated, instead of requiring authentication for
-                  each request.
-                

-                

-                  If there is only a single client, and if said client can
-                  keep connections alive on its own, enabling this option has
-                  next to no effect. If the client doesn't support connection
-                  keep-alive, enabling this option may make sense as it
-                  allows Privoxy to keep
-                  outgoing connections alive even if the client itself
-                  doesn't support it.
-                

-                

-                  You should also be aware that enabling this option
-                  increases the likelihood of getting the "No server or
-                  forwarder data" error message, especially if you are using
-                  a slow connection to the Internet.
-                

-                

-                  This option should only be used by experienced users who
-                  understand the risks and can weight them against the
-                  benefits.
-                

-              

-              

-                Examples:
-              

-              

-                

-                  connection-sharing 1
-                

-              

-            

-          

-        

-        

-          

-            7.6.8. socket-timeout
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  Number of seconds after which a socket times out if no data
-                  is received.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  Time in seconds.
-                

-              

-              

-                Default value:
-              

-              

-                

-                  None
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  A default value of 300 seconds is used.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  The default is quite high and you probably want to reduce
-                  it. If you aren't using an occasionally slow proxy like
-                  Tor, reducing it to a few seconds should be fine.
-                

-              

-              

-                Examples:
-              

-              

-                

-                  socket-timeout 300
-                

-              

-            

-          

-        

-        

-          

-            7.6.9.
-            max-client-connections
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  Maximum number of client connections that will be served.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  Positive number.
-                

-              

-              

-                Default value:
-              

-              

-                

-                  128
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  Connections are served until a resource limit is reached.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  Privoxy creates one thread
-                  (or process) for every incoming client connection that
-                  isn't rejected based on the access control settings.
-                

-                

-                  If the system is powerful enough, Privoxy can theoretically deal with
-                  several hundred (or thousand) connections at the same time,
-                  but some operating systems enforce resource limits by
-                  shutting down offending processes and their default limits
-                  may be below the ones Privoxy would require under heavy
-                  load.
-                

-                

-                  Configuring Privoxy to
-                  enforce a connection limit below the thread or process
-                  limit used by the operating system makes sure this doesn't
-                  happen. Simply increasing the operating system's limit
-                  would work too, but if Privoxy isn't the only application
-                  running on the system, you may actually want to limit the
-                  resources used by Privoxy.
-                

-                

-                  If Privoxy is only used by
-                  a single trusted user, limiting the number of client
-                  connections is probably unnecessary. If there are multiple
-                  possibly untrusted users you probably still want to
-                  additionally use a packet filter to limit the maximal
-                  number of incoming connections per client. Otherwise a
-                  malicious user could intentionally create a high number of
-                  connections to prevent other users from using Privoxy.
-                

-                

-                  Obviously using this option only makes sense if you choose
-                  a limit below the one enforced by the operating system.
-                

-                

-                  One most POSIX-compliant systems Privoxy can't properly deal with more
-                  than FD_SETSIZE file descriptors at the same time and has
-                  to reject connections if the limit is reached. This will
-                  likely change in a future version, but currently this limit
-                  can't be increased without recompiling Privoxy with a different FD_SETSIZE
-                  limit.
-                

-              

-              

-                Examples:
-              

-              

-                

-                  max-client-connections 256
-                

-              

-            

-          

-        

-        

-          

-            7.6.10.
-            handle-as-empty-doc-returns-ok
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  The status code Privoxy returns for pages blocked with +handle-as-empty-document.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  0 or 1
-                

-              

-              

-                Default value:
-              

-              

-                

-                  0
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  Privoxy returns a status 403(forbidden) for all blocked
-                  pages.
-                

-              

-              

-                Effect if set:
-              

-              

-                

-                  Privoxy returns a status 200(OK) for pages blocked with
-                  +handle-as-empty-document and a status 403(Forbidden) for
-                  all other blocked pages.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  This directive was added as a work-around for Firefox bug
-                  492459: "Websites are no longer
-                  rendered if SSL requests for JavaScripts are blocked by a
-                  proxy." (https://bugzilla.mozilla.org/show_bug.cgi?id=492459),
-                  the bug has been fixed for quite some time, but this
-                  directive is also useful to make it harder for websites to
-                  detect whether or not resources are being blocked.
-                

-              

-            

-          

-        

-        

-          

-            7.6.11. enable-compression
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  Whether or not buffered content is compressed before
-                  delivery.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  0 or 1
-                

-              

-              

-                Default value:
-              

-              

-                

-                  0
-                

-              

-              

-                Effect if unset:
-              

-              

-                

-                  Privoxy does not compress buffered content.
-                

-              

-              

-                Effect if set:
-              

-              

-                

-                  Privoxy compresses buffered content before delivering it to
-                  the client, provided the client supports it.
-                

-              

-              

-                Notes:
-              

-              

-                

-                  This directive is only supported if Privoxy has been
-                  compiled with FEATURE_COMPRESSION, which should not to be
-                  confused with FEATURE_ZLIB.
-                

-                

-                  Compressing buffered content is mainly useful if Privoxy
-                  and the client are running on different systems. If they
-                  are running on the same system, enabling compression is
-                  likely to slow things down. If you didn't measure
-                  otherwise, you should assume that it does and keep this
-                  option disabled.
-                

-                

-                  Privoxy will not compress buffered content below a certain
-                  length.
-                

-              

-            

-          

+
+      

+        
7.6.11. enable-compression

+
+        

+          

+            
Specifies:

+
+            

+              
Whether or not buffered content is compressed before
+              delivery.

+            

+
+            
Type of value:

+
+            

+              
0 or 1

+            

+
+            
Default value:

+
+            

+              
0

+            

+
+            
Effect if unset:

+
+            

+              
Privoxy does not compress buffered content.

+            

+
+            
Effect if set:

+
+            

+              
Privoxy compresses buffered content before delivering it to
+              the client, provided the client supports it.

+            

+
+            
Notes:

+
+            

+              
This directive is only supported if Privoxy has been
+              compiled with FEATURE_COMPRESSION, which should not to be
+              confused with FEATURE_ZLIB.

+
+              
Compressing buffered content is mainly useful if Privoxy and
+              the client are running on different systems. If they are
+              running on the same system, enabling compression is likely to
+              slow things down. If you didn't measure otherwise, you should
+              assume that it does and keep this option disabled.

+
+              
Privoxy will not compress buffered content below a certain
+              length.

+            

+          

         

-        

-          

-            7.6.12. compression-level
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  The compression level that is passed to the zlib library
-                  when compressing buffered content.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  Positive number ranging from 0
-                  to 9.
-                

-              

-              

-                Default value:
-              

-              

-                

-                  1
-                

-              

-              

-                Notes:
-              

-              

-                

-                  Compressing the data more takes usually longer than
-                  compressing it less or not compressing it at all. Which
-                  level is best depends on the connection between Privoxy and
-                  the client. If you can't be bothered to benchmark it for
-                  yourself, you should stick with the default and keep
-                  compression disabled.
-                

-                

-                  If compression is disabled, the compression level is
-                  irrelevant.
-                

-              

-              

-                Examples:
-              

-              

-                

-                

-                
-                  
-                    
+                
+              

-
+      
+
+      

+        
7.6.12. compression-level

+
+        

+          

+            
Specifies:

+
+            

+              
The compression level that is passed to the zlib library
+              when compressing buffered content.

+            

+
+            
Type of value:

+
+            

+              
Positive number ranging from 0 to
+              9.

+            

+
+            
Default value:

+
+            

+              
1

+            

+
+            
Notes:

+
+            

+              
Compressing the data more takes usually longer than
+              compressing it less or not compressing it at all. Which level
+              is best depends on the connection between Privoxy and the
+              client. If you can't be bothered to benchmark it for yourself,
+              you should stick with the default and keep compression
+              disabled.

+
+              
If compression is disabled, the compression level is
+              irrelevant.

+            

+
+            
Examples:

+
+            

+              
+                
+                  
-                  
-                

+                    
     # Best speed (compared to the other levels)
     compression-level 1
     # Best compression
@@ -3730,553 +3089,452 @@ Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
     compression-level 0
 
 

-                    

-              

-            

-          

+                  

+            

+          

         

-        

-          

-            7.6.13. client-header-order
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  The order in which client headers are sorted before
-                  forwarding them.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  Client header names delimited by
-                  spaces or tabs
-                

-              

-              

-                Default value:
-              

-              

-                

-                  None
-                

-              

-              

-                Notes:
-              

-              

-                

-                  By default Privoxy leaves
-                  the client headers in the order they were sent by the
-                  client. Headers are modified in-place, new headers are
-                  added at the end of the already existing headers.
-                

-                

-                  The header order can be used to fingerprint client requests
-                  independently of other headers like the User-Agent.
-                

-                

-                  This directive allows to sort the headers differently to
-                  better mimic a different User-Agent. Client headers will be
-                  emitted in the order given, headers whose name isn't
-                  explicitly specified are added at the end.
-                

-                

-                  Note that sorting headers in an uncommon way will make
-                  fingerprinting actually easier. Encrypted headers are not
-                  affected by this directive.
-                

-              

-            

-          

+      

+
+      

+        
7.6.13. client-header-order

+
+        

+          

+            
Specifies:

+
+            

+              
The order in which client headers are sorted before
+              forwarding them.

+            

+
+            
Type of value:

+
+            

+              
Client header names delimited by
+              spaces or tabs

+            

+
+            
Default value:

+
+            

+              
None

+            

+
+            
Notes:

+
+            

+              
By default Privoxy leaves
+              the client headers in the order they were sent by the client.
+              Headers are modified in-place, new headers are added at the end
+              of the already existing headers.

+
+              
The header order can be used to fingerprint client requests
+              independently of other headers like the User-Agent.

+
+              
This directive allows to sort the headers differently to
+              better mimic a different User-Agent. Client headers will be
+              emitted in the order given, headers whose name isn't explicitly
+              specified are added at the end.

+
+              
Note that sorting headers in an uncommon way will make
+              fingerprinting actually easier. Encrypted headers are not
+              affected by this directive.

+            

+          

         

-        

-          

-            7.6.14. client-specific-tag
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  The name of a tag that will always be set for clients that
-                  requested it through the webinterface.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  Tag name followed by a
-                  description that will be shown in the webinterface
-                

-              

-              

-                Default value:
-              

-              

-                

-                  None
-                

-              

-              

-                Notes:
-              

-              

-                

-                  
-                    
-                      
-                    
-                    
-                      
-                    
-                  

-                        Warning
-                      

-                        

-                          This is an experimental feature. The syntax is
-                          likely to change in future versions.
-                        

-                      

-                

-                

-                  Client-specific tags allow Privoxy admins to create
-                  different profiles and let the users chose which one they
-                  want without impacting other users.
-                

-                

-                  One use case is allowing users to circumvent certain blocks
-                  without having to allow them to circumvent all blocks. This
-                  is not possible with the enable-remote-toggle
-                  feature because it would bluntly disable all blocks for
-                  all users and also affect other actions like filters. It
-                  also is set globally which renders it useless in most
-                  multi-user setups.
-                

-                

-                  After a client-specific tag has been defined with the
-                  client-specific-tag directive, action sections can be
-                  activated based on the tag by using a CLIENT-TAG pattern. The CLIENT-TAG pattern is
-                  evaluated at the same priority as URL patterns, as a result
-                  the last matching pattern wins. Tags that are created based
-                  on client or server headers are evaluated later on and can
-                  overrule CLIENT-TAG and URL patterns!
-                

-                

-                  The tag is set for all requests that come from clients that
-                  requested it to be set. Note that "clients" are
-                  differentiated by IP address, if the IP address changes the
-                  tag has to be requested again.
-                

-                

-                  Clients can request tags to be set by using the CGI
-                  interface http://config.privoxy.org/client-tags.
-                  The specific tag description is only used on the web page
-                  and should be phrased in away that the user understand the
-                  effect of the tag.
-                

-              

-              

-                Examples:
-              

-              

-                

-                

-                
+      
+
+      

+        
7.6.14. client-specific-tag

+
+        

+          

+            
Specifies:

+
+            

+              
The name of a tag that will always be set for clients that
+              requested it through the webinterface.

+            

+
+            
Type of value:

+
+            

+              
Tag name followed by a
+              description that will be shown in the webinterface

+            

+
+            
Default value:

+
+            

+              
None

+            

+
+            
Notes:

+
+            

+              

+                

-                    
+                  
+
+                  
+                    
+                  
+                

                   

-
+                    
Warning

+                      
This is an experimental feature. The syntax is
+                      likely to change in future versions.

+                    

+              

+
+              
Client-specific tags allow Privoxy admins to create
+              different profiles and let the users chose which one they want
+              without impacting other users.

+
+              
One use case is allowing users to circumvent certain blocks
+              without having to allow them to circumvent all blocks. This is
+              not possible with the enable-remote-toggle
+              feature because it would bluntly disable all blocks for all
+              users and also affect other actions like filters. It also is
+              set globally which renders it useless in most multi-user
+              setups.

+
+              
After a client-specific tag has been defined with the
+              client-specific-tag directive, action sections can be activated
+              based on the tag by using a CLIENT-TAG pattern. The CLIENT-TAG pattern is
+              evaluated at the same priority as URL patterns, as a result the
+              last matching pattern wins. Tags that are created based on
+              client or server headers are evaluated later on and can
+              overrule CLIENT-TAG and URL patterns!

+
+              
The tag is set for all requests that come from clients that
+              requested it to be set. Note that "clients" are differentiated
+              by IP address, if the IP address changes the tag has to be
+              requested again.

+
+              
Clients can request tags to be set by using the CGI
+              interface http://config.privoxy.org/client-tags. The
+              specific tag description is only used on the web page and
+              should be phrased in away that the user understand the effect
+              of the tag.

+            
+
+            
Examples:

+
+            

+              
+                
+                  
+                
+              

+                    
     # Define a couple of tags, the described effect requires action sections
     # that are enabled based on CLIENT-TAG patterns.
     client-specific-tag circumvent-blocks Overrule blocks but do not affect other actions
     disable-content-filters Disable content-filters but do not affect other actions
 
 

+                  

+            

+          
+        

+      

+
+      

+        
7.6.15. client-tag-lifetime

+
+        

+          

+            
Specifies:

+
+            

+              
How long a temporarily enabled tag remains enabled.

+            

+
+            
Type of value:

+
+            

+              
Time in seconds.

+            

+
+            
Default value:

+
+            

+              
60

+            

+
+            
Notes:

+
+            

+              

+                
+                  
+                    
+                  
+
+                  
+                    
Warning

+                      
This is an experimental feature. The syntax is
+                      likely to change in future versions.

                     		
                   

                 

-              

-            

-          

-        

-        

-          

-            7.6.15. client-tag-lifetime
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  How long a temporarily enabled tag remains enabled.
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  Time in seconds.
-                

-              

-              

-                Default value:
-              

-              

-                

-                  60
-                

-              

-              

-                Notes:
-              

-              

-                

-                  
-                    
-                      
-                    
-                    
-                      
-                    
-                  

-                        Warning
-                      

-                        

-                          This is an experimental feature. The syntax is
-                          likely to change in future versions.
-                        

-                      

-                

-                

-                  In case of some tags users may not want to enable them
-                  permanently, but only for a short amount of time, for
-                  example to circumvent a block that is the result of an
-                  overly-broad URL pattern.
-                

-                

-                  The CGI interface http://config.privoxy.org/client-tags therefore
-                  provides a "enable this tag temporarily" option. If it is
-                  used, the tag will be set until the client-tag-lifetime is
-                  over.
-                

-              

-              

-                Examples:
-              

-              

-                

-                

-                
-                  
-                    

-
+              
+
+              
In case of some tags users may not want to enable them
+              permanently, but only for a short amount of time, for example
+              to circumvent a block that is the result of an overly-broad URL
+              pattern.

+
+              
The CGI interface http://config.privoxy.org/client-tags therefore
+              provides a "enable this tag temporarily" option. If it is used,
+              the tag will be set until the client-tag-lifetime is over.

+            
+
+            
Examples:

+
+            

+              
+                
+                  
+                
+              

+                    
       # Increase the time to life for temporarily enabled tags to 3 minutes
       client-tag-lifetime 180
 
 

+                  

+            

+          
+        
+      
+
+      

+        
7.6.16. trust-x-forwarded-for

+
+        

+          

+            
Specifies:

+
+            

+              
Whether or not Privoxy should use IP addresses specified
+              with the X-Forwarded-For header

+            

+
+            
Type of value:

+
+            

+              
0 or one

+            

+
+            
Default value:

+
+            

+              
0

+            

+
+            
Notes:

+
+            

+              

+                
+                  
+                    
+                  
+
+                  
+                    
Warning

+                      
This is an experimental feature. The syntax is
+                      likely to change in future versions.

                     		
                   

                 

-              

-            

-          

-        

-        

-          

-            7.6.16. trust-x-forwarded-for
-          

-          

-            

-              

-                Specifies:
-              

-              

-                

-                  Whether or not Privoxy should use IP addresses specified
-                  with the X-Forwarded-For header
-                

-              

-              

-                Type of value:
-              

-              

-                

-                  0 or one
-                

-              

-              

-                Default value:
-              

-              

-                

-                  0
-                

-              

-              

-                Notes:
-              

-              

-                

-                  
-                    
-                      
-                    
-                    
-                      
-                    
-                  

-                        Warning
-                      

-                        

-                          This is an experimental feature. The syntax is
-                          likely to change in future versions.
-                        

-                      

-                

-                

-                  If clients reach Privoxy through another proxy, for example
-                  a load balancer, Privoxy can't tell the client's IP address
-                  from the connection. If multiple clients use the same
-                  proxy, they will share the same client tag settings which
-                  is usually not desired.
-                

-                

-                  This option lets Privoxy use the X-Forwarded-For header
-                  value as client IP address. If the proxy sets the header,
-                  multiple clients using the same proxy do not share the same
-                  client tag settings.
-                

-                

-                  This option should only be enabled if Privoxy can only be
-                  reached through a proxy and if the proxy can be trusted to
-                  set the header correctly. It is recommended that ACL are
-                  used to make sure only trusted systems can reach Privoxy.
-                

-                

-                  If access to Privoxy isn't limited to trusted systems, this
-                  option would allow malicious clients to change the client
-                  tags for other clients or increase Privoxy's memory
-                  requirements by registering lots of client tag settings for
-                  clients that don't exist.
-                

-              

-              

-                Examples:
-              

-              

-                

-                

-                
-                  
-                    
+                
+              

-
+              
+
+              
If clients reach Privoxy through another proxy, for example
+              a load balancer, Privoxy can't tell the client's IP address
+              from the connection. If multiple clients use the same proxy,
+              they will share the same client tag settings which is usually
+              not desired.

+
+              
This option lets Privoxy use the X-Forwarded-For header
+              value as client IP address. If the proxy sets the header,
+              multiple clients using the same proxy do not share the same
+              client tag settings.

+
+              
This option should only be enabled if Privoxy can only be
+              reached through a proxy and if the proxy can be trusted to set
+              the header correctly. It is recommended that ACL are used to
+              make sure only trusted systems can reach Privoxy.

+
+              
If access to Privoxy isn't limited to trusted systems, this
+              option would allow malicious clients to change the client tags
+              for other clients or increase Privoxy's memory requirements by
+              registering lots of client tag settings for clients that don't
+              exist.

+            
+
+            
Examples:

+
+            

+              
+                
+                  
-                  
-                

+                    
       # Allow systems that can reach Privoxy to provide the client
       # IP address with a X-Forwarded-For header.
       trust-x-forwarded-for 1
 
 

-                    

-              

-            
-          
+                  

+            

+          

         

       

-      

-        

-          7.7. Windows GUI Options
-        

-        

-          Privoxy has a number of options
-          specific to the Windows GUI interface:
-        

-        
-        

-          If "activity-animation" is set to 1, the
-          Privoxy icon will animate when
-          "Privoxy" is active. To turn off, set to
-          0.
-        

-        

-        

-        

-            activity-animation 1

-              
-        

-         
-        

-          If "log-messages" is set to 1, Privoxy copies log messages to the
-          console window. The log detail depends on the debug directive.
-        

-        

-        

-        

-            log-messages 1

-              
-        

-         
-        

-          If "log-buffer-size" is set to 1, the
-          size of the log buffer, i.e. the amount of memory used for the log
-          messages displayed in the console window, will be limited to "log-max-lines" (see below).
-        

-        

-          Warning: Setting this to 0 will result in the buffer to grow
-          infinitely and eat up all your memory!
-        

-        

-        

-        

-            log-buffer-size 1

-              
-        

-         
-        

-          log-max-lines is the maximum
-          number of lines held in the log buffer. See above.
-        

-        

-        

-        

-            log-max-lines 200

-              
-        

-         
-        

-          If "log-highlight-messages" is set to 1,
-          Privoxy will highlight portions of
-          the log messages with a bold-faced font:
-        

-        

-        

-        

-            log-highlight-messages 1

-              
-        

-         
-        

-          The font used in the console window:
-        

-        

-        

-        

-            log-font-name Comic Sans MS

-              
-        

-         
-        

-          Font size used in the console window:
-        

-        

-        

-        

-            log-font-size 8

-              
-        

-         
-        

-          "show-on-task-bar" controls whether or
-          not Privoxy will appear as a
-          button on the Task bar when minimized:
-        

-        

-        

-        

-            show-on-task-bar 0

-              
-        

-         
-        

-          If "close-button-minimizes" is set to 1,
-          the Windows close button will minimize Privoxy instead of closing the program (close
-          with the exit option on the File menu).
-        

-        

-        

-        

-            close-button-minimizes 1

-              
-        

-         
-        

-          The "hide-console" option is specific to
-          the MS-Win console version of Privoxy. If this option is used, Privoxy will disconnect from and hide the
-          command console.
-        

-        

-        

-        

-            #hide-console

-              
-        

-      

     
-    

-      

-      
-        
-          
-          
-          
-        
-        
-          
-          
-          
-        
-      

-            Prev
-          
-            Home
-          
-            Next
-          

-            Privoxy Configuration
-          
-             
-          
-            Actions Files
-          

+
+    

+      
7.7. Windows
+      GUI Options

+
+      
Privoxy has a number of options
+      specific to the Windows GUI interface:

+
+      
If "activity-animation" is set to 1, the
+      Privoxy icon will animate when
+      "Privoxy" is active. To turn off, set to
+      0.

+
+      
  activity-animation 1

+         

+
+      
If "log-messages" is set to 1,
+      Privoxy copies log messages to the
+      console window. The log detail depends on the debug directive.

+
+      
  log-messages 1

+         

+
+      
If "log-buffer-size" is set to 1, the
+      size of the log buffer, i.e. the amount of memory used for the log
+      messages displayed in the console window, will be limited to
+      "log-max-lines" (see below).

+
+      
Warning: Setting this to 0 will result in the buffer to grow
+      infinitely and eat up all your memory!

+
+      
  log-buffer-size 1

+         

+
+      
log-max-lines is the maximum number
+      of lines held in the log buffer. See above.

+
+      
  log-max-lines 200

+         

+
+      
If "log-highlight-messages" is set to 1,
+      Privoxy will highlight portions of the
+      log messages with a bold-faced font:

+
+      
  log-highlight-messages 1

+         

+
+      
The font used in the console window:

+
+      
  log-font-name Comic Sans
+      MS

+         

+
+      
Font size used in the console window:

+
+      
  log-font-size 8

+         

+
+      
"show-on-task-bar" controls whether or
+      not Privoxy will appear as a button on
+      the Task bar when minimized:

+
+      
  show-on-task-bar 0

+         

+
+      
If "close-button-minimizes" is set to 1,
+      the Windows close button will minimize Privoxy instead of closing the program (close with
+      the exit option on the File menu).

+
+      
  close-button-minimizes 1

+         

+
+      
The "hide-console" option is specific to
+      the MS-Win console version of Privoxy.
+      If this option is used, Privoxy will
+      disconnect from and hide the command console.

+
+      
  #hide-console

+         

     

-  
-
+  

+
+  

+    

+
+    
+      
+        
+
+        
 
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
PrevHomeNext
Privoxy Configuration Actions Files

+  

+
+
diff --git a/doc/webserver/user-manual/configuration.html b/doc/webserver/user-manual/configuration.html
index 156b2e31..7bb6b351 100644
--- a/doc/webserver/user-manual/configuration.html
+++ b/doc/webserver/user-manual/configuration.html
@@ -1,308 +1,267 @@
-
+
+
 
-  
-    
-      Privoxy Configuration
-    
-    
-    
-    
-    
-    
-    
-    
-  
-  
-    

-      
-        
-          
-        
+
+  Privoxy Configuration
+  
+  
+  
+  
+  
+  
+  
+
+
+
+  

+    

-            Privoxy 3.0.26 User Manual
-          

+      
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
Privoxy 3.0.26 User Manual
PrevNext

+    

+  

+
+  

+    
6. Privoxy
+    Configuration

+
+    
All Privoxy configuration is stored
+    in text files. These files can be edited with a text editor. Many
+    important aspects of Privoxy can also be
+    controlled easily with a web browser.

+
+    

+      
6.1. Controlling Privoxy with Your Web
+      Browser

+
+      
Privoxy's user interface can be
+      reached through the special URL http://config.privoxy.org/ (shortcut: http://p.p/), which is a built-in page
+      and works without Internet access. You will see the following
+      section:

+
+      
-          
-          
-          
-        
-      

         

-            Prev
-          
-          
-            Next
-          

-      

-    

-    

-      

-        6. Privoxy Configuration
-      

-      

-        All Privoxy configuration is stored
-        in text files. These files can be edited with a text editor. Many
-        important aspects of Privoxy can
-        also be controlled easily with a web browser.
-      

-      

-        

-          6.1. Controlling Privoxy with
-          Your Web Browser
-        

-        

-          Privoxy's user interface can be
-          reached through the special URL http://config.privoxy.org/ (shortcut: http://p.p/), which is a built-in
-          page and works without Internet access. You will see the following
-          section:
-        

-        
-          
-            
-          
-        

-
+          

+            
 
 

-              

-                    Privoxy Menu
-              

-
-

-              
-                
-                  
-                    
-                  
-                  
-                    
-                  
-                  
-                    
-                  
-                  
-                    
-                  
-                  
-                    
-                  
-                  
-                    
-                  
-                
-              

-                              ▪  View & change the current configuration
-                    

-                              ▪  View the source code version numbers
-                    

-                              ▪  View the request headers.
-                    

-                              ▪  Look up which actions apply to a URL and why
-
-                    

-                              ▪  Toggle Privoxy on or off
-                    

-                              ▪  Documentation
-                    

-
+
+            
    Privoxy Menu

+            
 

-            

-        

-          This should be self-explanatory. Note the first item leads to an
-          editor for the actions files, which
-          is where the ad, banner, cookie, and URL blocking magic is
-          configured as well as other advanced features of Privoxy. This is an easy way to adjust various
-          aspects of Privoxy configuration.
-          The actions file, and other configuration files, are explained in
-          detail below.
-        

-        

-          "Toggle Privoxy On or Off" is handy for
-          sites that might have problems with your current actions and
-          filters. You can in fact use it as a test to see whether it is
-          Privoxy causing the problem or
-          not. Privoxy continues to run as a
-          proxy in this case, but all manipulation is disabled, i.e. Privoxy acts like a normal forwarding
-          proxy.
-        

-        

-          Note that several of the features described above are disabled by
-          default in Privoxy 3.0.7 beta and
-          later. Check the configuration
-          file to learn why and in which cases it's safe to enable them
-          again.
-        

-      

-      

-        

-          6.2. Configuration Files Overview
-        

-        

-          For Unix, *BSD and Linux, all configuration files are located in
-          /etc/privoxy/ by default. For MS Windows,
-          OS/2, and AmigaOS these are all in the same directory as the Privoxy executable. The name and number
-          of configuration files has changed from previous versions, and is
-          subject to change as development progresses.
-        

-        

-          The installed defaults provide a reasonable starting point, though
-          some settings may be aggressive by some standards. For the time
-          being, the principle configuration files are:
-        

-        

-        

-        
    
-          
  • 
-            
    
-              The main configuration file is named
-              config on Linux, Unix, BSD, OS/2, and
-              AmigaOS and config.txt on Windows.
-              This is a required file.
-            
    
-          
    • 
-          
  • 
-            
    
-              match-all.action is used to define
-              which "actions" relating to
-              banner-blocking, images, pop-ups, content modification, cookie
-              handling etc should be applied by default. It should be the
-              first actions file loaded.
-            
    
-            
    
-              default.action defines many
-              exceptions (both positive and negative) from the default set of
-              actions that's configured in match-all.action. It should be the second
-              actions file loaded and shouldn't be edited by the user.
-            
    
-            
    
-              Multiple actions files may be defined in config. These are processed in the order they
-              are defined. Local customizations and locally preferred
-              exceptions to the default policies as defined in match-all.action (which you will most probably
-              want to define sooner or later) are best applied in user.action, where you can preserve them across
-              upgrades. The file isn't installed by all installers, but you
-              can easily create it yourself with a text editor.
-            
    
-            
    
-              There is also a web based editor that can be accessed from http://config.privoxy.org/show-status (Shortcut: http://p.p/show-status) for the various actions
-              files.
-            
    
-          
    • 
-          
  • 
-            
    
-              "Filter files" (the filter file) can be used to re-write the
-              raw page content, including viewable text as well as embedded
-              HTML and JavaScript, and whatever else lurks on any given web
-              page. The filtering jobs are only pre-defined here; whether to
-              apply them or not is up to the actions files. default.filter includes various filters made
-              available for use by the developers. Some are much more
-              intrusive than others, and all should be used with caution. You
-              may define additional filter files in config as you can with actions files. We
-              suggest user.filter for any locally
-              defined filters or customizations.
-            
    
-          
    • 
-        

-
-        

-          The syntax of the configuration and filter files may change between
-          different Privoxy versions, unfortunately some enhancements cost
-          backwards compatibility.
-        

-        

-          All files use the "#" character to denote a comment (the rest of
-          the line will be ignored) and understand line continuation through
-          placing a backslash ("\") as the very last
-          character in a line. If the # is preceded
-          by a backslash, it looses its special function. Placing a # in front of an otherwise valid configuration
-          line to prevent it from being interpreted is called "commenting
-          out" that line. Blank lines are ignored.
-        

-        

-          The actions files and filter files can use Perl style regular expressions for maximum
-          flexibility.
-        

-        

-          After making any changes, there is no need to restart Privoxy in order for the changes to take
-          effect. Privoxy detects such
-          changes automatically. Note, however, that it may take one or two
-          additional requests for the change to take effect. When changing
-          the listening address of Privoxy,
-          these "wake up" requests must obviously
-          be sent to the old listening address.
-        

-        

-          While under development, the configuration content is subject to
-          change. The below documentation may not be accurate by the time you
-          read this. Also, what constitutes a "default" setting, may change, so please check all
-          your configuration files on important issues.
-        

-      

-    

-    

-      

-      
-        
-          
-          
-          
-        
-        
-          
-          
-          

-            Prev
-          
-            Home
-          
-            Next
-          

-            Starting Privoxy
-          
-             
-          
-            The Main Configuration File
+
+            
+              
+                
+                  
+                
+
+                
+                  
+                
+
+                
+                  
+                
+
+                
+                  
+                
+
+                
+                  
+                
+
+                
+                  
+                
+              
+            

+                          ▪  View & change the current
+                  configuration

+                          ▪  View the source code version numbers

+                          ▪  View the request headers.

+                          ▪  Look up which actions apply to a URL and
+                  why

+                          ▪  Toggle Privoxy on or off

+                          ▪  Documentation

           		
         

       

+
+      
This should be self-explanatory. Note the first item leads to an
+      editor for the actions files, which is
+      where the ad, banner, cookie, and URL blocking magic is configured as
+      well as other advanced features of Privoxy. This is an easy way to adjust various
+      aspects of Privoxy configuration. The
+      actions file, and other configuration files, are explained in detail
+      below.

+
+      
"Toggle Privoxy On or Off" is handy for
+      sites that might have problems with your current actions and filters.
+      You can in fact use it as a test to see whether it is Privoxy causing the problem or not. Privoxy continues to run as a proxy in this case,
+      but all manipulation is disabled, i.e. Privoxy acts like a normal forwarding proxy.

+
+      
Note that several of the features described above are disabled by
+      default in Privoxy 3.0.7 beta and
+      later. Check the configuration
+      file to learn why and in which cases it's safe to enable them
+      again.

     

-  
-
 
+    

+      
6.2.
+      Configuration Files Overview

+
+      
For Unix, *BSD and Linux, all configuration files are located in
+      /etc/privoxy/ by default. For MS Windows,
+      OS/2, and AmigaOS these are all in the same directory as the
+      Privoxy executable.

+
+      
The installed defaults provide a reasonable starting point, though
+      some settings may be aggressive by some standards. For the time being,
+      the principle configuration files are:

+
+      
    
+        
  • 
+          
    The main configuration file is named
+          config on Linux, Unix, BSD, OS/2, and
+          AmigaOS and config.txt on Windows. This
+          is a required file.
    
+        
    • 
+
+        
  • 
+          
    match-all.action is used to define
+          which "actions" relating to
+          banner-blocking, images, pop-ups, content modification, cookie
+          handling etc should be applied by default. It should be the first
+          actions file loaded.
    
+
+          
    default.action defines many exceptions
+          (both positive and negative) from the default set of actions that's
+          configured in match-all.action. It should
+          be the second actions file loaded and shouldn't be edited by the
+          user.
    
+
+          
    Multiple actions files may be defined in config. These are processed in the order they are
+          defined. Local customizations and locally preferred exceptions to
+          the default policies as defined in match-all.action (which you will most probably want
+          to define sooner or later) are best applied in user.action, where you can preserve them across
+          upgrades. The file isn't installed by all installers, but you can
+          easily create it yourself with a text editor.
    
+
+          
    There is also a web based editor that can be accessed from
+          http://config.privoxy.org/show-status (Shortcut:
+          http://p.p/show-status) for the various actions
+          files.
    
+        
    • 
+
+        
  • 
+          
    "Filter files" (the filter file) can be used to re-write the raw
+          page content, including viewable text as well as embedded HTML and
+          JavaScript, and whatever else lurks on any given web page. The
+          filtering jobs are only pre-defined here; whether to apply them or
+          not is up to the actions files. default.filter includes various filters made
+          available for use by the developers. Some are much more intrusive
+          than others, and all should be used with caution. You may define
+          additional filter files in config as you
+          can with actions files. We suggest user.filter for any locally defined filters or
+          customizations.
    
+        
    • 
+      

+
+      
The syntax of the configuration and filter files may change between
+      different Privoxy versions, unfortunately some enhancements cost
+      backwards compatibility.

+
+      
All files use the "#" character to denote a comment (the rest of the
+      line will be ignored) and understand line continuation through placing
+      a backslash ("\") as the very last character
+      in a line. If the # is preceded by a
+      backslash, it looses its special function. Placing a # in front of an otherwise valid configuration line to
+      prevent it from being interpreted is called "commenting out" that line.
+      Blank lines are ignored.

+
+      
The actions files and filter files can use Perl style regular expressions for maximum
+      flexibility.

+
+      
After making any changes, there is no need to restart Privoxy in order for the changes to take effect.
+      Privoxy detects such changes
+      automatically. Note, however, that it may take one or two additional
+      requests for the change to take effect. When changing the listening
+      address of Privoxy, these "wake up" requests must obviously be sent to the
+      old listening
+      address.

+    

+  

+
+  

+    

+
+    
+      
+        
+
+        
+
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
PrevHomeNext
Starting Privoxy The Main Configuration
+        File

+  

+
+
diff --git a/doc/webserver/user-manual/contact.html b/doc/webserver/user-manual/contact.html
index de4bf958..cb348b1c 100644
--- a/doc/webserver/user-manual/contact.html
+++ b/doc/webserver/user-manual/contact.html
@@ -1,417 +1,365 @@
-
+
+
 
-  
-    
-      Contacting the Developers, Bug Reporting and Feature Requests
-    
-    
-    
-    
-    
-    
-    
-    
-  
-  
-    

-      
-        
-          
-        
-        
-          
-          
-          
-        
-      

-            Privoxy 3.0.26 User Manual
-          

-            Prev
-          
-          
-            Next
-          

-      

+
+  Contacting the Developers, Bug Reporting and Feature
+  Requests
+  
+  
+  
+  
+  
+  
+  
+
+
+
+  

+    
+      
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
Privoxy 3.0.26 User Manual
PrevNext

+    

+  

+
+  

+    
11. Contacting the
+    Developers, Bug Reporting and Feature Requests

+
+    
We value your feedback. In fact, we rely on it to improve Privoxy and its configuration. However, please note
+    the following hints, so we can provide you with the best support.

+
+    

+      
11.1. Please provide sufficient
+      information

+
+      
A lot of support requests don't contain enough information and can't
+      be solved without a lot of back and forth which causes unnecessary
+      delays. Reading this section should help to prevent that.

+
+      
Before contacting us to report a problem, please try to verify that
+      it is a Privoxy problem, and not a
+      browser or site problem or documented behaviour that just happens to be
+      different than what you expected. If unsure, try toggling
+      off Privoxy, and see if the
+      problem persists.

+
+      
If you are using your own custom configuration, please try the
+      default configuration to see if the problem is configuration related.
+      If you're having problems with a feature that is disabled by default,
+      please ask around on the mailing list if others can reproduce the
+      problem.

+
+      
If you aren't using the latest Privoxy version, the problem may have
+      been found and fixed in the meantime. We would appreciate if you could
+      take the time to upgrade to the latest version and verify that the problem
+      still exists.

+
+      
Please be sure to provide the following information when reporting
+      problems or requesting support:

+
+      
    
+        
  • 
+          
    The exact Privoxy version you
+          are using.
    
+        
    • 
+
+        
  • 
+          
    The operating system and versions you run Privoxy on, e.g. Windows XP SP2.
    
+        
    • 
+
+        
  • 
+          
    The name, platform, and version of the browser you were using (e.g. Internet Explorer v5.5 for Mac).
    
+        
    • 
+
+        
  • 
+          
    The URL where the problem occurred, or some way for us to
+          duplicate the problem (e.g. http://somesite.example.com/?somethingelse=123).
    
+        
    • 
+
+        
  • 
+          
    Whether your version of Privoxy
+          is one supplied by the Privoxy
+          developers via SourceForge, or if you got your copy somewhere
+          else.
    
+        
    • 
+
+        
  • 
+          
    Whether you are using Privoxy
+          together with another proxy such as Tor. If so, please temporary disable the other
+          proxy to see if the symptoms change.
    
+        
    • 
+
+        
  • 
+          
    Whether you are using a personal firewall product. If so, does
+          Privoxy work without it?
    
+        
    • 
+
+        
  • 
+          
    Any other pertinent information to help identify the problem
+          such as config or log file excerpts (yes, you should have log file
+          entries for each action taken). To get a meaningful logfile, please
+          make sure that the logfile directive is being used and the following
+          debug
+          options are enabled (all of them):
    
+
+          
    
+          debug     1 # Log the destination for each request Privoxy let through. See also debug 1024.
    
+
+          debug     2 # show each connection status
    
+
+          debug     4 # show I/O status
    
+
+          debug     8 # show header parsing
    
+
+          debug   128 # debug redirects
    
+          debug   256 # debug GIF de-animation
    
+
+          debug   512 # Common Log Format
    
+
+          debug  1024 # Log the destination for requests Privoxy didn't let through, and the reason why.
    
+
+          debug  4096 # Startup banner and warnings.
    
+
+          debug  8192 # Non-fatal errors
    
+
+          
    If you are having trouble with a filter, please additionally
+          enable
    
+
+          
    
+          debug    64 # debug regular expression filters
    If
+          you are using Privoxy 3.0.17 or later and suspect that it
+          interprets the request or the response incorrectly, please enable
+
+          
    
+          debug 32768 # log all data read from the network
    
+
+          
    It's easy for us to ignore log messages that aren't relevant but
+          missing log messages may make it impossible to investigate a
+          problem. If you aren't sure which of the debug directives are
+          relevant, please just enable all of them and let us worry about
+          it.
    
+
+          
    Note that Privoxy log files may contain sensitive information so
+          please don't submit any logfiles you didn't read first. You can
+          mask sensitive information as long as it's clear that you removed
+          something.
    
+        
    • 
+      

+
+      
You don't have to tell us your actual name when filing a problem
+      report, but if you don't, please use a nickname so we can differentiate
+      between your messages and the ones entered by other "anonymous" users
+      that may respond to your request if they have the same problem or
+      already found a solution. Note that due to spam the trackers may not
+      always allow to post without being logged into SourceForge. If that's
+      the case, you are still free to create a login that isn't directly
+      linked to your name, though.

+
+      
Please also check the status of your request a few days after
+      submitting it, as we may request additional information. If you use a
+      SF id, you should automatically get a mail when someone responds to
+      your request. Please don't bother to add an email address when using
+      the tracker. If you prefer to communicate through email, just use one
+      of the mailing lists directly.

+
+      
If you are new to reporting problems, you might be interested in
+      How to Report Bugs Effectively.

+
+      
The appendix of the Privoxy User Manual also has helpful
+      information on understanding actions, and
+      action debugging.

     

-    

-      

-        11. Contacting the Developers, Bug Reporting and
-        Feature Requests
-      

-      

-        We value your feedback. In fact, we rely on it to improve Privoxy and its configuration. However,
-        please note the following hints, so we can provide you with the best
-        support.
-      

-      

-        

-          11.1. Please provide sufficient
-          information
-        

-        

-          A lot of support requests don't contain enough information and
-          can't be solved without a lot of back and forth which causes
-          unnecessary delays. Reading this section should help to prevent
-          that.
-        

-        

-          Before contacting us to report a problem, please try to verify that
-          it is a Privoxy problem, and not a
-          browser or site problem or documented behaviour that just happens
-          to be different than what you expected. If unsure, try toggling off Privoxy,
-          and see if the problem persists.
-        

-        

-          If you are using your own custom configuration, please try the
-          default configuration to see if the problem is configuration
-          related. If you're having problems with a feature that is disabled
-          by default, please ask around on the mailing list if others can
-          reproduce the problem.
-        

-        

-          If you aren't using the latest Privoxy version, the problem may
-          have been found and fixed in the meantime. We would appreciate if
-          you could take the time to upgrade to the latest version and verify that the
-          problem still exists.
-        

-        

-          Please be sure to provide the following information when reporting
-          problems or requesting support:
-        

-        

-        

-        
    
-          
  • 
-            
    
-              The exact Privoxy version you
-              are using.
-            
    
-          
    • 
-          
  • 
-            
    
-              The operating system and versions you run Privoxy on, e.g. Windows XP SP2.
-            
    
-          
    • 
-          
  • 
-            
    
-              The name, platform, and version of the browser you were using (e.g. Internet Explorer v5.5 for Mac).
-            
    
-          
    • 
-          
  • 
-            
    
-              The URL where the problem occurred, or some way for us to
-              duplicate the problem (e.g. http://somesite.example.com/?somethingelse=123).
-            
    
-          
    • 
-          
  • 
-            
    
-              Whether your version of Privoxy is one supplied by the Privoxy developers via SourceForge,
-              or if you got your copy somewhere else.
-            
    
-          
    • 
-          
  • 
-            
    
-              Whether you are using Privoxy
-              together with another proxy such as Tor. If so, please temporary disable the
-              other proxy to see if the symptoms change.
-            
    
-          
    • 
-          
  • 
-            
    
-              Whether you are using a personal firewall product. If so, does
-              Privoxy work without it?
-            
    
-          
    • 
-          
  • 
-            
    
-              Any other pertinent information to help identify the problem
-              such as config or log file excerpts (yes, you should have log
-              file entries for each action taken). To get a meaningful
-              logfile, please make sure that the logfile
-              directive is being used and the following debug
-              options are enabled (all of them):
-            
    
-            
    
-              debug     1 # Log the destination for each request Privoxy let through. See also debug 1024.
    
-
-               debug     2 # show each connection status
    
-
-               debug     4 # show I/O status
    
-
-               debug     8 # show header parsing
    
-
-               debug   128 # debug redirects
    
-
-               debug   256 # debug GIF de-animation
    
-
-               debug   512 # Common Log Format
    
-
-               debug  1024 # Log the destination for requests Privoxy didn't let through, and the reason why.
    
-
-               debug  4096 # Startup banner and warnings.
    
-
-               debug  8192 # Non-fatal errors
-            
    
-
-            
    
-              If you are having trouble with a filter, please additionally
-              enable
-            
    
-            
    
-              debug    64 # debug regular expression filters
-            
    
-            If you are using Privoxy 3.0.17 or later and suspect that it
-            interprets the request or the response incorrectly, please enable
-
-            
    
-              debug 32768 # log all data read from the network
-            
    
-
-            
    
-              It's easy for us to ignore log messages that aren't relevant
-              but missing log messages may make it impossible to investigate
-              a problem. If you aren't sure which of the debug directives are
-              relevant, please just enable all of them and let us worry about
-              it.
-            
    
-            
    
-              Note that Privoxy log files may contain sensitive information
-              so please don't submit any logfiles you didn't read first. You
-              can mask sensitive information as long as it's clear that you
-              removed something.
-            
    
-          
    • 
-        

-
-        

-          You don't have to tell us your actual name when filing a problem
-          report, but if you don't, please use a nickname so we can
-          differentiate between your messages and the ones entered by other
-          "anonymous" users that may respond to your request if they have the
-          same problem or already found a solution. Note that due to spam the
-          trackers may not always allow to post without being logged into
-          SourceForge. If that's the case, you are still free to create a
-          login that isn't directly linked to your name, though.
-        

-        

-          Please also check the status of your request a few days after
-          submitting it, as we may request additional information. If you use
-          a SF id, you should automatically get a mail when someone responds
-          to your request. Please don't bother to add an email address when
-          using the tracker. If you prefer to communicate through email, just
-          use one of the mailing lists directly.
-        

-        

-          If you are new to reporting problems, you might be interested in How to Report Bugs Effectively.
-        

-        

-          The appendix of the Privoxy User Manual also has
-          helpful information on understanding actions, and action
-          debugging.
-        

-      

-      

-        

-          11.2. Get Support
-        

-        

-          All users are welcome to discuss their issues on the users mailing list, where the developers also hang
-          around.
-        

-        

-          Please don't send private support requests to individual Privoxy
-          developers, either use the mailing lists or the support trackers.
-        

-        

-          If you have to contact a Privoxy developer directly for other
-          reasons, please send a real mail and do not bother with
-          SourceForge's messaging system. Answers to SourceForge messages are
-          usually bounced by SourceForge's mail server in which case the
-          developer wasted time writing a response you don't get. From your
-          point of view it will look like your message has been completely
-          ignored, so this is frustrating for all parties involved.
-        

-        

-          Note that the Privoxy mailing lists are moderated. Posts from
-          unsubscribed addresses have to be accepted manually by a moderator.
-          This may cause a delay of several days and if you use a subject
-          that doesn't clearly mention Privoxy or one of its features, your
-          message may be accidentally discarded as spam.
-        

-        

-          If you aren't subscribed, you should therefore spend a few seconds
-          to come up with a proper subject. Additionally you should make it
-          clear that you want to get CC'd. Otherwise some responses will be
-          directed to the mailing list only, and you won't see them.
-        

-      

-      

-        

-          11.3. Reporting Problems
-        

-        

-          "Problems" for our purposes, come in two
-          forms:
-        

-        
    
-          
  • 
-            
    
-              Configuration issues, such as ads that slip through, or sites
-              that don't function properly due to one Privoxy "action" or another being turned "on".
-            
    
-          
    • 
-          
  • 
-            
    
-              "Bugs" in the programming code that
-              makes up Privoxy, such as that
-              might cause a crash. Documentation issues, for example spelling
-              errors and unclear descriptions, are bugs, too.
-            
    
-          
    • 
-        

-        

-          

-            11.3.1. Reporting Ads or Other
-            Configuration Problems
-          

-          

-            Please send feedback on ads that slipped through, innocent images
-            that were blocked, sites that don't work properly, and other
-            configuration related problem of default.action file, to https://sourceforge.net/tracker/?group_id=11118&atid=460288,
-            the Actions File Tracker.
-          

-        

-        

-          

-            11.3.2. Reporting Bugs
-          

-          

-            Before reporting bugs, please make sure that the bug has not already been
-            submitted and observe the additional hints at the top
-            of the submit form. If already submitted, please feel
-            free to add any info to the original report that might help to
-            solve the issue.
-          

-        

-      

-      

-        

-          11.4. Reporting security problems
-        

-        

-          If you discovered a security problem or merely suspect that a bug
-          might be a security issue, please mail Fabian Keil
-          <fk@fabiankeil.de> (OpenPGP fingerprint: 4F36 C17F 3816 9136
-          54A1 E850 6918 2291 8BA2 371C).
-        

-        

-          Usually you should get a response within a day, otherwise it's
-          likely that either your mail or the response didn't make it. If
-          that happens, please mail to the developer list to request a status
-          update.
-        

-      

-      

-        

-          11.5. Mailing Lists
-        

-        

-          If you prefer to communicate through email, instead of using a web
-          interface, feel free to use one of the mailing lists. To discuss
-          issues that haven't been completely diagnosed yet, please use the
-          Privoxy users list. Technically interested users and people who
-          wish to contribute to the project are always welcome on the
-          developers list. You can find an overview of all Privoxy-related mailing lists, including list
-          archives, at: https://lists.privoxy.org/mailman/listinfo. The
-          lists hosted on privoxy.org have been created in 2016, the
-          previously-used lists hosted at SourceForge are deprecated but the
-          archives may still be useful: https://sourceforge.net/mail/?group_id=11118.
-        

+
+    

+      
11.2.
+      Get Support

+
+      
All users are welcome to discuss their issues on the users mailing list, where the developers also hang
+      around.

+
+      
Please don't send private support requests to individual Privoxy
+      developers, either use the mailing lists or the support trackers.

+
+      
If you have to contact a Privoxy developer directly for other
+      reasons, please send a real mail and do not bother with SourceForge's
+      messaging system. Answers to SourceForge messages are usually bounced
+      by SourceForge's mail server in which case the developer wasted time
+      writing a response you don't get. From your point of view it will look
+      like your message has been completely ignored, so this is frustrating
+      for all parties involved.

+
+      
Note that the Privoxy mailing lists are moderated. Posts from
+      unsubscribed addresses have to be accepted manually by a moderator.
+      This may cause a delay of several days and if you use a subject that
+      doesn't clearly mention Privoxy or one of its features, your message
+      may be accidentally discarded as spam.

+
+      
If you aren't subscribed, you should therefore spend a few seconds
+      to come up with a proper subject. Additionally you should make it clear
+      that you want to get CC'd. Otherwise some responses will be directed to
+      the mailing list only, and you won't see them.

+    

+
+    

+      
11.3. Reporting
+      Problems

+
+      
"Problems" for our purposes, come in two
+      forms:

+
+      
    
+        
  • 
+          
    Configuration issues, such as ads that slip through, or sites
+          that don't function properly due to one Privoxy "action" or
+          another being turned "on".
    
+        
    • 
+
+        
  • 
+          
    "Bugs" in the programming code that
+          makes up Privoxy, such as that
+          might cause a crash. Documentation issues, for example spelling
+          errors and unclear descriptions, are bugs, too.
    
+        
    • 
+      

+
+      

+        
11.3.1.
+        Reporting Ads or Other Configuration Problems

+
+        
Please send feedback on ads that slipped through, innocent images
+        that were blocked, sites that don't work properly, and other
+        configuration related problem of default.action file, to https://sourceforge.net/tracker/?group_id=11118&atid=460288,
+        the Actions File Tracker.

       

-      

-        

-          11.6. SourceForge support trackers
-        

-        

-          The SourceForge support trackers may be used as well,
-          but have various technical problems that are unlikely to be fixed
-          anytime soon. If you don't get a timely response, please try the
-          mailing list as well.
-        

+
+      

+        
11.3.2.
+        Reporting Bugs

+
+        
Before reporting bugs, please make sure that the bug has
+        not already been
+        submitted and observe the additional hints at the top of
+        the submit form. If already submitted, please feel free
+        to add any info to the original report that might help to solve the
+        issue.

       

     

-    

-      

-      
-        
-          
-          
-          
-        
-        
-          
-          
-          
-        
-      

-            Prev
-          
-            Home
-          
-            Next
-          

-            Privoxy's Template Files
-          
-             
-          
-            Privoxy Copyright, License and History
-          

+
+    

+      
11.4. Reporting security problems

+
+      
If you discovered a security problem or merely suspect that a bug
+      might be a security issue, please mail Fabian Keil
+      <fk@fabiankeil.de> (OpenPGP fingerprint: 4F36 C17F 3816 9136 54A1
+      E850 6918 2291 8BA2 371C).

+
+      
Usually you should get a response within a day, otherwise it's
+      likely that either your mail or the response didn't make it. If that
+      happens, please mail to the developer list to request a status
+      update.

     

-  
-
 
+    

+      
11.5.
+      Mailing Lists

+
+      
If you prefer to communicate through email, instead of using a web
+      interface, feel free to use one of the mailing lists. To discuss issues
+      that haven't been completely diagnosed yet, please use the Privoxy
+      users list. Technically interested users and people who wish to
+      contribute to the project are always welcome on the developers list.
+      You can find an overview of all Privoxy-related mailing lists, including list
+      archives, at: https://lists.privoxy.org/mailman/listinfo. The lists
+      hosted on privoxy.org have been created in 2016, the previously-used
+      lists hosted at SourceForge are deprecated but the archives may still
+      be useful: https://sourceforge.net/mail/?group_id=11118.

+    

+
+    

+      
11.6.
+      SourceForge support trackers

+
+      
The SourceForge support trackers may be used as well, but
+      have various technical problems that are unlikely to be fixed anytime
+      soon. If you don't get a timely response, please try the mailing list
+      as well.

+    

+  

+
+  

+    

+
+    
+      
+        
+
+        
+
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
PrevHomeNext
Privoxy's Template
+        Files Privoxy Copyright, License
+        and History

+  

+
+
diff --git a/doc/webserver/user-manual/copyright.html b/doc/webserver/user-manual/copyright.html
index 5e7e37ba..f38c62c7 100644
--- a/doc/webserver/user-manual/copyright.html
+++ b/doc/webserver/user-manual/copyright.html
@@ -1,74 +1,67 @@
-
+
+
 
-  
-    
-      Privoxy Copyright, License and History
-    
-    
-    
-    
-    
-    
-    
-    
-  
-  
-    

-      
-        
-          
-        
+
+  Privoxy Copyright, License and History
+  
+  
+  
+  
+  
+  
+  
+
+
+
+  

+    

-            Privoxy 3.0.26 User Manual
-          

+      
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
Privoxy 3.0.26 User Manual
PrevNext

+    

+  

+
+  

+    
12. Privoxy
+    Copyright, License and History

+
+    
Copyright © 2001-2016 by Privoxy Developers <privoxy-devel@lists.privoxy.org>

+
+    
Some source code is based on code Copyright © 1997 by Anonymous
+    Coders and Junkbusters, Inc. and licensed under the GNU General Public License.

+
+    
Privoxy is free software; you can
+    redistribute it and/or modify it under the terms of the GNU General Public License, version 2, as published by
+    the Free Software Foundation and included in the next section.

+
+    

+      
12.1. License

+
+      
-          
-          
-          
-        
-      

         

-            Prev
-          
-          
-            Next
-          

-      

-    

-    

-      

-        12. Privoxy Copyright, License and History
-      

-      

-        Copyright © 2001-2016 by Privoxy Developers <privoxy-devel@lists.privoxy.org>
-      

-      

-        Some source code is based on code Copyright © 1997 by Anonymous
-        Coders and Junkbusters, Inc. and licensed under the GNU General Public License.
-      

-      

-        Privoxy is free software; you can
-        redistribute it and/or modify it under the terms of the GNU General Public License, version 2, as published
-        by the Free Software Foundation and included in the next section.
-      

-      

-        

-          12.1. License
-        

-        

-        

-        
-          
-            
-          
-        

-
+          

+            
                      GNU GENERAL PUBLIC LICENSE
                        Version 2, June 1991
 
@@ -408,269 +401,251 @@ proprietary programs.  If your program is a subroutine library, you may
 consider it more useful to permit linking proprietary applications with the
 library.  If this is what you want to do, use the GNU Lesser General
 Public License instead of this License.
+
 

-            

-      

-      

-        

-          12.2. History
-        

-        

-          A long time ago, there was the Internet
-          Junkbuster, by Anonymous Coders and Junkbusters Corporation.
-          This saved many users a lot of pain in the early days of web
-          advertising and user tracking.
-        

-        

-          But the web, its protocols and standards, and with it, the
-          techniques for forcing ads on users, give up autonomy over their
-          browsing, and for tracking them, keeps evolving. Unfortunately, the
-          Internet Junkbuster did not.
-          Version 2.0.2, published in 1998, was the last official release,
-          available from Junkbusters Corporation. Fortunately, it had been
-          released under the GNU GPL, which allowed further development by others.
-        

-        

-          So Stefan Waldherr started maintaining an improved version of the
-          software, to which eventually a number of people contributed
-          patches. It could already replace banners with a transparent image,
-          and had a first version of pop-up killing, but it was still very
-          closely based on the original, with all its limitations, such as
-          the lack of HTTP/1.1 support, flexible per-site configuration, or
-          content modification. The last release from this effort was version
-          2.0.2-10, published in 2000.
-        

-        

-          Then, some developers picked up the thread, and started
-          turning the software inside out, upside down, and then reassembled
-          it, adding many new features along the way.
-        

-        

-          The result of this is Privoxy,
-          whose first stable version, 3.0, was released August, 2002.
-        

-        

-          As of 2012 the Junkbusters Corporation's website
-          (http://www.junkbusters.com/) has been shut down, but Privoxy is
-          still actively maintained.
-        

-      

-      

-        

-          12.3. Authors
-        

-        

-          Current Privoxy Team:
-        

-        

-           Fabian Keil, lead developer

-            David Schmidt

-            Hal Burgiss

-            Lee Rian

-            Roland Rosenfeld

-            Ian Silvester
-        

-        

-          Former Privoxy Team Members:
-        

-        

-           Johny Agotnes

-            Rodrigo Barbosa

-            Moritz Barsnick

-            Ian Cummings

-            Brian Dessent

-            Jon Foster

-            Karsten Hopp

-            Alexander Lazic

-            Daniel Leite

-            Gábor Lipták

-            Adam Lock

-            Guy Laroche

-            Justin McMurtry

-            Mark Miller

-            Gerry Murphy

-            Andreas Oesterhelt

-            Haroon Rafique

-            Georg Sauthoff

-            Thomas Steudten

-            Jörg Strohmayer

-            Rodney Stromlund

-            Sviatoslav Sviridov

-            Sarantis Paskalis

-            Stefan Waldherr
-        

-        

-          Thanks to the many people who have tested Privoxy, reported bugs,
-          provided patches, made suggestions, donated or contributed in some
-          other way. These include (in alphabetical order):
-        

-        

-           Rustam Abdullaev

-            Anatoly Arzhnikov

-            Ken Arromdee

-            Natxo Asenjo

-            Devin Bayer

-            Havard Berland

-            David Bo

-            Gergely Bor

-            Francois Botha

-            Reiner Buehl

-            Andrew J. Caines

-            Clifford Caoile

-            Edward Carrel

-            Pak Chan

-            Wan-Teh Chang

-            Sam Chen

-            Ramkumar Chinchani

-            Billy Crook

-            Frédéric Crozat

-            Matthew Daley

-            Michael T. Davis

-            Markus Dittrich

-            Mattes Dolak

-            Matthias Drochner

-            Peter E.

-            Florian Effenberger

-            Markus Elfring

-            Ryan Farmer

-            Matthew Fischer

-            Dean Gaudet

-            Stephen Gildea

-            John McGowan

-            Lizik Grelier

-            Daniel Griscom

-            Felix Gröbert

-            Bernard Guillot

-            Jeff H.

-            Tim H.

-            Aaron Hamid

-            Basil Hussain

-            Darel Henman

-            Magnus Holmgren

-            Eric M. Hopper

-            Ralf Horstmann

-            Stefan Huehner

-            Peter Hyman

-            Derek Jennings

-            Andrew Jones

-            Julien Joubert

-            Ralf Jungblut

-            Petr Kadlec

-            Robert Klemme

-            Steven Kolins

-            Korda

-            Stefan Kurtz

-            Zeno Kugy

-            David Laight

-            Bert van Leeuwen

-            Don Libes

-            Paul Lieverse

-            Han Liu

-            Toby Lyward

-            Wil Mahan

-            Jindrich Makovicka

-            Raphael Marichez

-            Francois Marier

-            Angelina Matson

-            Jonathan McKenzie

-            David Mediavilla

-            J. Momberger

-            Raphael Moll

-            Mathew Murphy

-            Amuro Namie

-            Mark Nelson

-            Adam Piggott

-            Petr Písar

-            Dan Price

-            Kai Raven

-            Roberto Ragusa

-            Félix Rauch

-            Chris John Riley

-            Maynard Riley

-            Andreas Rutkauskas

-            Bart Schelstraete

-            Gregory Seidman

-            Atman Sense

-            Chung-chieh Shan

-            Benjamin C. Wiley Sittler

-            Simon South

-            Dan Stahlke

-            Oliver Stoeneberg

-            Rick Sykes

-            Spinor S.

-            Peter Thoenen

-            Martin Thomas

-            Reuben Thomas

-            Guybrush Threepwood

-            Joel Verhagen

-            Bobby G. Vinyard

-            Jochen Voss

-            David Wagner

-            Glenn Washburn

-            Song Weijia

-            Jörg Weinmann

-            Darren Wiebe

-            Anduin Withers

-            Yang Xia

-            Jarry Xu

-            Oliver Yeoh

-            Jamie Zawinski

-            Eduard Wulff
-        

-        

-          Privoxy is based in part on code originally developed by
-          Junkbusters Corp. and Anonymous Coders.
-        

-        

-          Privoxy heavily relies on Philip Hazel's PCRE.
-        

-        

-          The code to filter compressed content makes use of zlib which is
-          written by Jean-loup Gailly and Mark Adler.
-        

-        

-          On systems that lack snprintf(), Privoxy is using a version written
-          by Mark Martinec. On systems that lack strptime(), Privoxy is using
-          the one from the GNU C Library written by Ulrich Drepper.
-        

-      

-    

-    

-      

-      
-        
-          
-          
-          
-        
-        
-          
-          
-          

-            Prev
-          
-            Home
-          
-            Next
-          

-            Contacting the Developers, Bug Reporting and Feature Requests
-          
-             
-          
-            See Also
           
         

       

     

-  
-
 
+    

+      
12.2. History

+
+      
A long time ago, there was the Internet
+      Junkbuster, by Anonymous Coders and Junkbusters Corporation.
+      This saved many users a lot of pain in the early days of web
+      advertising and user tracking.

+
+      
But the web, its protocols and standards, and with it, the
+      techniques for forcing ads on users, give up autonomy over their
+      browsing, and for tracking them, keeps evolving. Unfortunately, the
+      Internet Junkbuster did not. Version
+      2.0.2, published in 1998, was the last official release, available from
+      Junkbusters Corporation. Fortunately, it had been released under the
+      GNU GPL, which allowed further development by others.

+
+      
So Stefan Waldherr started maintaining an improved version of the
+      software, to which eventually a number of people contributed patches.
+      It could already replace banners with a transparent image, and had a
+      first version of pop-up killing, but it was still very closely based on
+      the original, with all its limitations, such as the lack of HTTP/1.1
+      support, flexible per-site configuration, or content modification. The
+      last release from this effort was version 2.0.2-10, published in
+      2000.

+
+      
Then, some developers picked up the thread, and started turning the
+      software inside out, upside down, and then reassembled it, adding many
+      new features along the way.

+
+      
The result of this is Privoxy,
+      whose first stable version, 3.0, was released August, 2002.

+
+      
As of 2012 the Junkbusters Corporation's website
+      (http://www.junkbusters.com/) has been shut down, but Privoxy is still
+      actively maintained.

+    

+
+    

+      
12.3. Authors

+
+      
Current Privoxy Team:

+
+      

+       Fabian Keil, lead developer

+       David Schmidt

+       Hal Burgiss

+       Lee Rian

+       Roland Rosenfeld

+       Ian Silvester

+
+      
Former Privoxy Team Members:

+
+      
 Johny Agotnes

+       Rodrigo Barbosa

+       Moritz Barsnick

+       Ian Cummings

+       Brian Dessent

+       Jon Foster

+       Karsten Hopp

+       Alexander Lazic

+       Daniel Leite

+       Gábor Lipták

+       Adam Lock

+       Guy Laroche

+       Justin McMurtry

+       Mark Miller

+       Gerry Murphy

+       Andreas Oesterhelt

+       Haroon Rafique

+       Georg Sauthoff

+       Thomas Steudten

+       Jörg Strohmayer

+       Rodney Stromlund

+       Sviatoslav Sviridov

+       Sarantis Paskalis

+       Stefan Waldherr

+
+      
Thanks to the many people who have tested Privoxy, reported bugs,
+      provided patches, made suggestions, donated or contributed in some
+      other way. These include (in alphabetical order):

+
+      
 Rustam Abdullaev

+       Anatoly Arzhnikov

+       Ken Arromdee

+       Natxo Asenjo

+       Devin Bayer

+       Havard Berland

+       David Bo

+       Gergely Bor

+       Francois Botha

+       Reiner Buehl

+       Andrew J. Caines

+       Clifford Caoile

+       Edward Carrel

+       Pak Chan

+       Wan-Teh Chang

+       Sam Chen

+       Ramkumar Chinchani

+       Billy Crook

+       Frédéric Crozat

+       Matthew Daley

+       Michael T. Davis

+       Markus Dittrich

+       Mattes Dolak

+       Matthias Drochner

+       Peter E.

+       Florian Effenberger

+       Markus Elfring

+       Ryan Farmer

+       Matthew Fischer

+       Dean Gaudet

+       Stephen Gildea

+       John McGowan

+       Lizik Grelier

+       Daniel Griscom

+       Felix Gröbert

+       Bernard Guillot

+       Jeff H.

+       Tim H.

+       Aaron Hamid

+       Basil Hussain

+       Darel Henman

+       Magnus Holmgren

+       Eric M. Hopper

+       Ralf Horstmann

+       Stefan Huehner

+       Peter Hyman

+       Derek Jennings

+       Andrew Jones

+       Julien Joubert

+       Ralf Jungblut

+       Petr Kadlec

+       Robert Klemme

+       Steven Kolins

+       Korda

+       Stefan Kurtz

+       Zeno Kugy

+       David Laight

+       Bert van Leeuwen

+       Don Libes

+       Paul Lieverse

+       Han Liu

+       Toby Lyward

+       Wil Mahan

+       Jindrich Makovicka

+       Raphael Marichez

+       Francois Marier

+       Angelina Matson

+       Jonathan McKenzie

+       David Mediavilla

+       J. Momberger

+       Raphael Moll

+       Mathew Murphy

+       Amuro Namie

+       Mark Nelson

+       Adam Piggott

+       Petr Písar

+       Dan Price

+       Kai Raven

+       Roberto Ragusa

+       Félix Rauch

+       Marvin Renich

+       Chris John Riley

+       Maynard Riley

+       Andreas Rutkauskas

+       Bart Schelstraete

+       Gregory Seidman

+       Atman Sense

+       Chung-chieh Shan

+       Benjamin C. Wiley Sittler

+       Simon South

+       Dan Stahlke

+       Oliver Stoeneberg

+       Rick Sykes

+       Spinor S.

+       Peter Thoenen

+       Martin Thomas

+       Reuben Thomas

+       Guybrush Threepwood

+       Joel Verhagen

+       Bobby G. Vinyard

+       Jochen Voss

+       David Wagner

+       Glenn Washburn

+       Song Weijia

+       Jörg Weinmann

+       Darren Wiebe

+       Anduin Withers

+       Yang Xia

+       Jarry Xu

+       Oliver Yeoh

+       Jamie Zawinski

+       Eduard Wulff

+
+      
Privoxy is based in part on code originally developed by Junkbusters
+      Corp. and Anonymous Coders.

+
+      
Privoxy heavily relies on Philip Hazel's PCRE.

+
+      
The code to filter compressed content makes use of zlib which is
+      written by Jean-loup Gailly and Mark Adler.

+
+      
On systems that lack snprintf(), Privoxy is using a version written
+      by Mark Martinec. On systems that lack strptime(), Privoxy is using the
+      one from the GNU C Library written by Ulrich Drepper.

+    

+  

+
+  

+    

+
+    
+      
+        
+
+        
+
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
PrevHomeNext
Contacting the Developers,
+        Bug Reporting and Feature Requests See Also

+  

+
+
diff --git a/doc/webserver/user-manual/filter-file.html b/doc/webserver/user-manual/filter-file.html
index 1fc59625..45398494 100644
--- a/doc/webserver/user-manual/filter-file.html
+++ b/doc/webserver/user-manual/filter-file.html
@@ -1,484 +1,421 @@
-
+
+
 
-  
-    
-      Filter Files
-    
-    
-    
-    
-    
-    
-    
-    
-  
-  
-    

-      
-        
-          
-        
+
+  Filter Files
+  
+  
+  
+  
+  
+  
+  
+
+
+
+  

+    

-            Privoxy 3.0.26 User Manual
-          

+      
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
Privoxy 3.0.26 User Manual
PrevNext

+    

+  

+
+  

+    
9. Filter
+    Files

+
+    
On-the-fly text substitutions need to be defined in a "filter file". Once defined, they can then be invoked as
+    an "action".

+
+    
Privoxy supports three different
+    pcrs-based filter actions: filter to rewrite the content that is
+    send to the client, client-header-filter to
+    rewrite headers that are send by the client, and server-header-filter to
+    rewrite headers that are send by the server.

+
+    
Privoxy also supports two tagger
+    actions: client-header-tagger
+    and server-header-tagger.
+    Taggers and filters use the same syntax in the filter files, the
+    difference is that taggers don't modify the text they are filtering, but
+    use a rewritten version of the filtered text as tag. The tags can then be
+    used to change the applying actions through sections with tag-patterns.

+
+    
Finally Privoxy supports the
+    external-filter action to
+    enable external filters
+    written in proper programming languages.

+
+    
Multiple filter files can be defined through the filterfile config
+    directive. The filters as supplied by the developers are located in
+    default.filter. It is recommended that any
+    locally defined or modified filters go in a separately defined file such
+    as user.filter.

+
+    
Common tasks for content filters are to eliminate common annoyances in
+    HTML and JavaScript, such as pop-up windows, exit consoles, crippled
+    windows without navigation tools, the infamous <BLINK> tag etc, to
+    suppress images with certain width and height attributes (standard banner
+    sizes or web-bugs), or just to have fun.

+
+    
Enabled content filters are applied to any content whose "Content Type" header is recognised as a sign of
+    text-based content, with the exception of text/plain. Use the force-text-mode action to also
+    filter other content.

+
+    
Substitutions are made at the source level, so if you want to
+    "roll your own" filters, you should first be
+    familiar with HTML syntax, and, of course, regular expressions.

+
+    
Just like the actions files, the
+    filter file is organized in sections, which are called filters here. Each filter
+    consists of a heading line, that starts with one of the keywords FILTER:, CLIENT-HEADER-FILTER: or
+    SERVER-HEADER-FILTER: followed by the filter's
+    name, and a short
+    (one line) description of what it does. Below that line come
+    the jobs, i.e.
+    lines that define the actual text substitutions. By convention, the name
+    of a filter should describe what the filter eliminates. The comment is used
+    in the web-based user
+    interface.

+
+    
Once a filter called name has been
+    defined in the filter file, it can be invoked by using an action of the
+    form +filter{name} in any actions file.

+
+    
Filter definitions start with a header line that contains the filter
+    type, the filter name and the filter description. A content filter header
+    line for a filter called "foo" could look like
+    this:

+
+    
+      
+        
+      
+    

+          
+FILTER: foo Replace all "foo" with "bar"
+

+        

+
+    
Below that line, and up to the next header line, come the jobs that
+    define what text replacements the filter executes. They are specified in
+    a syntax that imitates Perl's s/// operator. If you are
+    familiar with Perl, you will find this to be quite intuitive, and may
+    want to look at the PCRS documentation for the subtle differences to Perl
+    behaviour.

+
+    
Most notably, the non-standard option letter U is supported, which turns the default to ungreedy
+    matching (add ? to quantifiers to turn them
+    greedy again).

+
+    
The non-standard option letter D (dynamic)
+    allows to use the variables $host, $origin (the IP address the request
+    came from), $path, $url and $listen-address (the address on which Privoxy
+    accepted the client request. Example: 127.0.0.1:8118). They will be
+    replaced with the value they refer to before the filter is executed.

+
+    
Note that '$' is a bad choice for a delimiter in a dynamic filter as
+    you might end up with unintended variables if you use a variable name
+    directly after the delimiter. Variables will be resolved without escaping
+    anything, therefore you also have to be careful not to chose delimiters
+    that appear in the replacement text. For example '<' should be save,
+    while '?' will sooner or later cause conflicts with $url.

+
+    
The non-standard option letter T (trivial)
+    prevents parsing for backreferences in the substitute. Use it if you want
+    to include text like '$&' in your substitute without quoting.

+
+    
If you are new to "Regular Expressions", you might
+    want to take a look at the Appendix on
+    regular expressions, and see the Perl manual for
+    the
+    s/// operator's syntax and Perl-style regular
+    expressions in general. The below examples might also help to get you
+    started.

+
+    

+      
9.1.
+      Filter File Tutorial

+
+      
Now, let's complete our "foo" content
+      filter. We have already defined the heading, but the jobs are still
+      missing. Since all it does is to replace "foo" with "bar", there is
+      only one (trivial) job needed:

+
+      
-          
-          
-          

         

-            Prev
-          
-          
-            Next
+          
+            
+s/foo/bar/
+

           		
         

       

-      

-    

-    

-      

-        9. Filter Files
-      

-      

-        On-the-fly text substitutions need to be defined in a "filter file". Once defined, they can then be invoked
-        as an "action".
-      

-      

-        Privoxy supports three different
-        pcrs-based filter actions: filter to rewrite the content
-        that is send to the client, client-header-filter
-        to rewrite headers that are send by the client, and server-header-filter
-        to rewrite headers that are send by the server.
-      

-      

-        Privoxy also supports two tagger
-        actions: client-header-tagger
-        and server-header-tagger.
-        Taggers and filters use the same syntax in the filter files, the
-        difference is that taggers don't modify the text they are filtering,
-        but use a rewritten version of the filtered text as tag. The tags can
-        then be used to change the applying actions through sections with tag-patterns.
-      

-      

-        Finally Privoxy supports the external-filter action
-        to enable external filters
-        written in proper programming languages.
-      

-      

-        Multiple filter files can be defined through the filterfile config
-        directive. The filters as supplied by the developers are located in
-        default.filter. It is recommended that any
-        locally defined or modified filters go in a separately defined file
-        such as user.filter.
-      

-      

-        Common tasks for content filters are to eliminate common annoyances
-        in HTML and JavaScript, such as pop-up windows, exit consoles,
-        crippled windows without navigation tools, the infamous <BLINK>
-        tag etc, to suppress images with certain width and height attributes
-        (standard banner sizes or web-bugs), or just to have fun.
-      

-      

-        Enabled content filters are applied to any content whose "Content Type" header is recognised as a sign of
-        text-based content, with the exception of text/plain. Use the force-text-mode action to
-        also filter other content.
-      

-      

-        Substitutions are made at the source level, so if you want to "roll your own" filters, you should first be
-        familiar with HTML syntax, and, of course, regular expressions.
-      

-      

-        Just like the actions files, the
-        filter file is organized in sections, which are called filters here. Each filter
-        consists of a heading line, that starts with one of the keywords FILTER:, CLIENT-HEADER-FILTER: or SERVER-HEADER-FILTER: followed by the filter's name, and a short
-        (one line) description of what it does. Below that line
-        come the jobs,
-        i.e. lines that define the actual text substitutions. By convention,
-        the name of a filter should describe what the filter eliminates. The comment is
-        used in the web-based user interface.
-      

-      

-        Once a filter called name has
-        been defined in the filter file, it can be invoked by using an action
-        of the form +filter{name} in any actions file.
-      

-      

-        Filter definitions start with a header line that contains the filter
-        type, the filter name and the filter description. A content filter
-        header line for a filter called "foo"
-        could look like this:
-      

-      

-      

+
+      
But wait! Didn't the comment say that all occurrences of
+      "foo" should be replaced? Our current job
+      will only take care of the first "foo" on
+      each page. For global substitution, we'll need to add the g option:

+
       

         

           
-
-FILTER: foo Replace all "foo" with "bar"
+            
+s/foo/bar/g
 

           

         

       

 
-      

-        Below that line, and up to the next header line, come the jobs that
-        define what text replacements the filter executes. They are specified
-        in a syntax that imitates Perl's s/// operator. If you are
-        familiar with Perl, you will find this to be quite intuitive, and may
-        want to look at the PCRS documentation for the subtle differences to
-        Perl behaviour.
-      

-      

-        Most notably, the non-standard option letter U is supported, which turns the default to ungreedy
-        matching (add ? to quantifiers to turn them
-        greedy again).
-      

-      

-        The non-standard option letter D (dynamic)
-        allows to use the variables $host, $origin (the IP address the
-        request came from), $path, $url and $listen-address (the address on
-        which Privoxy accepted the client request. Example: 127.0.0.1:8118).
-        They will be replaced with the value they refer to before the filter
-        is executed.
-      

-      

-        Note that '$' is a bad choice for a delimiter in a dynamic filter as
-        you might end up with unintended variables if you use a variable name
-        directly after the delimiter. Variables will be resolved without
-        escaping anything, therefore you also have to be careful not to chose
-        delimiters that appear in the replacement text. For example '<'
-        should be save, while '?' will sooner or later cause conflicts with
-        $url.
-      

-      

-        The non-standard option letter T (trivial)
-        prevents parsing for backreferences in the substitute. Use it if you
-        want to include text like '$&' in your substitute without
-        quoting.
-      

-      

-        If you are new to "Regular Expressions", you
-        might want to take a look at the Appendix on regular expressions, and see
-        the Perl
-        manual for the s/// operator's syntax and Perl-style
-        regular expressions in general. The below examples might also
-        help to get you started.
-      

-      

-        

-          9.1. Filter File Tutorial
-        

-        

-          Now, let's complete our "foo" content
-          filter. We have already defined the heading, but the jobs are still
-          missing. Since all it does is to replace "foo" with "bar", there
-          is only one (trivial) job needed:
-        

-        

-        

-        
-          
-            
-          
-        

-
-s/foo/bar/
-

-            

-
-        

-          But wait! Didn't the comment say that all occurrences of "foo" should be replaced? Our current job will only
-          take care of the first "foo" on each
-          page. For global substitution, we'll need to add the g option:
-        

-        

-        

-        
-          
-            
-          
-        

-
-s/foo/bar/g
-

-            

+      
Our complete filter now looks like this:

 
-        

-          Our complete filter now looks like this:
-        

-        

-        

-        
-          
-            
+        
+      

-
+      
+        
+          
-          
-        

+            
 FILTER: foo Replace all "foo" with "bar"
 s/foo/bar/g
 

-            

+          

 
-        

-          Let's look at some real filters for more interesting examples. Here
-          you see a filter that protects against some common annoyances that
-          arise from JavaScript abuse. Let's look at its jobs one after the
-          other:
-        

-        

-        

-        
-          
-            
+        
+      

-
+      
Let's look at some real filters for more interesting examples. Here
+      you see a filter that protects against some common annoyances that
+      arise from JavaScript abuse. Let's look at its jobs one after the
+      other:

+
+      
+        
+          
-          
-        

+            
 FILTER: js-annoyances Get rid of particularly annoying JavaScript abuse
 
 # Get rid of JavaScript referrer tracking. Test page: http://www.randomoddness.com/untitled.htm
 #
 s|(<script.*)document\.referrer(.*</script>)|$1"Not Your Business!"$2|Usg
 

-            

+          

 
-        

-          Following the header line and a comment, you see the job. Note that
-          it uses | as the delimiter instead of /, because the pattern contains a forward
-          slash, which would otherwise have to be escaped by a backslash (\).
-        

-        

-          Now, let's examine the pattern: it starts with the text <script.* enclosed in parentheses. Since the dot
-          matches any character, and * means: "Match an arbitrary number of the element left of
-          myself", this matches "<script", followed by any text, i.e. it matches the whole
-          page, from the start of the first <script> tag.
-        

-        

-          That's more than we want, but the pattern continues: document\.referrer matches only the exact string
-          "document.referrer". The dot needed to
-          be escaped,
-          i.e. preceded by a backslash, to take away its special meaning as a
-          joker, and make it just a regular dot. So far, the meaning is:
-          Match from the start of the first <script> tag in a the page,
-          up to, and including, the text "document.referrer", if both are present in the page (and
-          appear in that order).
-        

-        

-          But there's still more pattern to go. The next element, again
-          enclosed in parentheses, is .*</script>. You already know what .* means, so the whole pattern translates to: Match
-          from the start of the first <script> tag in a page to the end
-          of the last <script> tag, provided that the text "document.referrer" appears somewhere in between.
-        

-        

-          This is still not the whole story, since we have ignored the
-          options and the parentheses: The portions of the page matched by
-          sub-patterns that are enclosed in parentheses, will be remembered
-          and be available through the variables $1, $2,
-          ... in the substitute. The U option
-          switches to ungreedy matching, which means that the first .* in the pattern will only "eat up" all text in between "<script" and the first occurrence of "document.referrer", and that the second .* will only span the text up to the first "</script>" tag. Furthermore, the s option says that the match may span multiple lines
-          in the page, and the g option again means
-          that the substitution is global.
-        

-        

-          So, to summarize, the pattern means: Match all scripts that contain
-          the text "document.referrer". Remember
-          the parts of the script from (and including) the start tag up to
-          (and excluding) the string "document.referrer" as $1,
-          and the part following that string, up to and including the closing
-          tag, as $2.
-        

-        

-          Now the pattern is deciphered, but wasn't this about substituting
-          things? So lets look at the substitute: $1"Not
-          Your Business!"$2 is easy to read: The text remembered as $1, followed by "Not Your
-          Business!" (including the quotation marks!), followed by
-          the text remembered as $2. This produces
-          an exact copy of the original string, with the middle part (the
-          "document.referrer") replaced by "Not Your Business!".
-        

-        

-          The whole job now reads: Replace "document.referrer" by "Not Your
-          Business!" wherever it appears inside a <script> tag.
-          Note that this job won't break JavaScript syntax, since both the
-          original and the replacement are syntactically valid string
-          objects. The script just won't have access to the referrer
-          information anymore.
-        

-        

-          We'll show you two other jobs from the JavaScript taming
-          department, but this time only point out the constructs of special
-          interest:
-        

-        

-        

-        
-          
-            
+        
+      

-
+      
Following the header line and a comment, you see the job. Note that
+      it uses | as the delimiter instead of
+      /, because the pattern contains a forward
+      slash, which would otherwise have to be escaped by a backslash
+      (\).

+
+      
Now, let's examine the pattern: it starts with the text <script.* enclosed in parentheses. Since the dot
+      matches any character, and * means:
+      "Match an arbitrary number of the element left of
+      myself", this matches "<script",
+      followed by any
+      text, i.e. it matches the whole page, from the start of the first
+      <script> tag.

+
+      
That's more than we want, but the pattern continues: document\.referrer matches only the exact string
+      "document.referrer". The dot needed to be
+      escaped, i.e.
+      preceded by a backslash, to take away its special meaning as a joker,
+      and make it just a regular dot. So far, the meaning is: Match from the
+      start of the first <script> tag in a the page, up to, and
+      including, the text "document.referrer", if
+      both are present
+      in the page (and appear in that order).

+
+      
But there's still more pattern to go. The next element, again
+      enclosed in parentheses, is .*</script>.
+      You already know what .* means, so the whole
+      pattern translates to: Match from the start of the first <script>
+      tag in a page to the end of the last <script> tag, provided that
+      the text "document.referrer" appears
+      somewhere in between.

+
+      
This is still not the whole story, since we have ignored the options
+      and the parentheses: The portions of the page matched by sub-patterns
+      that are enclosed in parentheses, will be remembered and be available
+      through the variables $1, $2, ... in the
+      substitute. The U option switches to ungreedy
+      matching, which means that the first .* in the
+      pattern will only "eat up" all text in
+      between "<script" and the first occurrence of
+      "document.referrer", and that the second
+      .* will only span the text up to the
+      first
+      "</script>" tag. Furthermore, the
+      s option says that the match may span multiple
+      lines in the page, and the g option again
+      means that the substitution is global.

+
+      
So, to summarize, the pattern means: Match all scripts that contain
+      the text "document.referrer". Remember the
+      parts of the script from (and including) the start tag up to (and
+      excluding) the string "document.referrer" as
+      $1, and the part following that string, up to
+      and including the closing tag, as $2.

+
+      
Now the pattern is deciphered, but wasn't this about substituting
+      things? So lets look at the substitute: $1"Not Your
+      Business!"$2 is easy to read: The text remembered as $1, followed by "Not Your
+      Business!" (including the quotation marks!), followed by the
+      text remembered as $2. This produces an exact
+      copy of the original string, with the middle part (the "document.referrer") replaced by "Not Your Business!".

+
+      
The whole job now reads: Replace "document.referrer" by "Not Your
+      Business!" wherever it appears inside a <script> tag. Note
+      that this job won't break JavaScript syntax, since both the original
+      and the replacement are syntactically valid string objects. The script
+      just won't have access to the referrer information anymore.

+
+      
We'll show you two other jobs from the JavaScript taming department,
+      but this time only point out the constructs of special interest:

+
+      
+        
+          
-          
-        

+            
 # The status bar is for displaying link targets, not pointless blahblah
 #
 s/window\.status\s*=\s*(['"]).*?\1/dUmMy=1/ig
 

-            

+          

 
-        

-          \s stands for whitespace characters
-          (space, tab, newline, carriage return, form feed), so that \s* means: "zero or more
-          whitespace". The ? in .*? makes this matching of arbitrary text ungreedy.
-          (Note that the U option is not set). The
-          ['"] construct means: "a single or a double quote". Finally, \1 is a back-reference to the first
-          parenthesis just like $1 above, with the
-          difference that in the pattern, a backslash indicates a
-          back-reference, whereas in the substitute, it's the dollar.
-        

-        

-          So what does this job do? It replaces assignments of single- or
-          double-quoted strings to the "window.status" object with a dummy assignment
-          (using a variable name that is hopefully odd enough not to conflict
-          with real variables in scripts). Thus, it catches many cases where
-          e.g. pointless descriptions are displayed in the status bar instead
-          of the link target when you move your mouse over links.
-        

-        

-        

-        
-          
-            
+        
+      

-
+      
\s stands for whitespace characters (space,
+      tab, newline, carriage return, form feed), so that \s* means: "zero or more
+      whitespace". The ? in .*? makes this matching of arbitrary text ungreedy.
+      (Note that the U option is not set). The
+      ['"] construct means: "a
+      single or a
+      double quote". Finally, \1 is a
+      back-reference to the first parenthesis just like $1 above, with the difference that in the pattern, a backslash
+      indicates a back-reference, whereas in the substitute, it's the
+      dollar.

+
+      
So what does this job do? It replaces assignments of single- or
+      double-quoted strings to the "window.status"
+      object with a dummy assignment (using a variable name that is hopefully
+      odd enough not to conflict with real variables in scripts). Thus, it
+      catches many cases where e.g. pointless descriptions are displayed in
+      the status bar instead of the link target when you move your mouse over
+      links.

+
+      
+        
+          
-          
-        

+            
 # Kill OnUnload popups. Yummy. Test: http://www.zdnet.com/zdsubs/yahoo/tree/yfs.html
 #
 s/(<body [^>]*)onunload(.*>)/$1never$2/iU
 

-            

+          

 
-        

-          Including the OnUnload event binding in the HTML DOM was a
-          CRIME. When I
-          close a browser window, I want it to close and die. Basta. This job
-          replaces the "onunload" attribute in
-          "<body>" tags with the dummy word
-          never. Note that the i option makes the pattern matching
-          case-insensitive. Also note that ungreedy matching alone doesn't
-          always guarantee a minimal match: In the first parenthesis, we had
-          to use [^>]* instead of .* to prevent the match from exceeding the
-          <body> tag if it doesn't contain "OnUnload", but the page's content does.
-        

-        

-          The last example is from the fun department:
-        

-        

-        

-        
-          
-            
+        
+      

-
+      
Including the OnUnload event binding in the HTML DOM was a
+      CRIME. When I
+      close a browser window, I want it to close and die. Basta. This job
+      replaces the "onunload" attribute in
+      "<body>" tags with the dummy word
+      never. Note that the i option makes the pattern matching case-insensitive.
+      Also note that ungreedy matching alone doesn't always guarantee a
+      minimal match: In the first parenthesis, we had to use [^>]* instead of .* to
+      prevent the match from exceeding the <body> tag if it doesn't
+      contain "OnUnload", but the page's content
+      does.

+
+      
The last example is from the fun department:

+
+      
+        
+          
-          
-        

+            
 FILTER: fun Fun text replacements
 
 # Spice the daily news:
 #
 s/microsoft(?!\.com)/MicroSuck/ig
 

-            

+          

 
-        

-          Note the (?!\.com) part (a so-called
-          negative lookahead) in the job's pattern, which means: Don't match,
-          if the string ".com" appears directly
-          following "microsoft" in the page. This
-          prevents links to microsoft.com from being trashed, while still
-          replacing the word everywhere else.
-        

-        

-        

-        
-          
-            
+        
+      

-
+      
Note the (?!\.com) part (a so-called
+      negative lookahead) in the job's pattern, which means: Don't match, if
+      the string ".com" appears directly following
+      "microsoft" in the page. This prevents links
+      to microsoft.com from being trashed, while still replacing the word
+      everywhere else.

+
+      
+        
+          
-          
-        

+            
 # Buzzword Bingo (example for extended regex syntax)
 #
 s* industry[ -]leading \
@@ -494,551 +431,461 @@ s* industry[ -]leading \
 *<font color="red"><b>BINGO!</b></font> \
 *igx
 

-            

+          

 
-        

-          The x option in this job turns on extended
-          syntax, and allows for e.g. the liberal use of (non-interpreted!)
-          whitespace for nicer formatting.
-        

-        

-          You get the idea?
-        

-      

-      

-        

-          9.2. The Pre-defined Filters
-        

-        

-          The distribution default.filter file
-          contains a selection of pre-defined filters for your convenience:
-        

-        

-          

-            

-              js-annoyances
-            

-            

-              

-                The purpose of this filter is to get rid of particularly
-                annoying JavaScript abuse. To that end, it
-              

-              
    
-                
  • 
-                  
    
-                    replaces JavaScript references to the browser's referrer
-                    information with the string "Not Your Business!". This
-                    compliments the hide-referrer
-                    action on the content level.
-                  
    
-                
    • 
-                
  • 
-                  
    
-                    removes the bindings to the DOM's unload event which we feel has no
-                    right to exist and is responsible for most "exit consoles", i.e. nasty windows that
-                    pop up when you close another one.
-                  
    
-                
    • 
-                
  • 
-                  
    
-                    removes code that causes new windows to be opened with
-                    undesired properties, such as being full-screen,
-                    non-resizeable, without location, status or menu bar etc.
-                  
    
-                
    • 
-              

-
-              

-                Use with caution. This is an aggressive filter, and can break
-                sites that rely heavily on JavaScript.
-              

-            

-            

-              js-events
-            

-            

-              

-                This is a very radical measure. It removes virtually all
-                JavaScript event bindings, which means that scripts can not
-                react to user actions such as mouse movements or clicks,
-                window resizing etc, anymore. Use with caution!
-              

-              

-                We strongly
-                discourage using this filter as a default since it
-                breaks many legitimate scripts. It is meant for use only on
-                extra-nasty sites (should you really need to go there).
-              

-            

-            

-              html-annoyances
-            

-            

-              

-                This filter will undo many common instances of HTML based
-                abuse.
-              

-              

-                The BLINK and MARQUEE tags are neutralized (yeah baby!), and
-                browser windows will be created as resizeable (as of course
-                they should be!), and will have location, scroll and menu
-                bars -- even if specified otherwise.
-              

-            

-            

-              content-cookies
-            

-            

-              

-                Most cookies are set in the HTTP dialog, where they can be
-                intercepted by the crunch-incoming-cookies
-                and crunch-outgoing-cookies
-                actions. But web sites increasingly make use of HTML meta
-                tags and JavaScript to sneak cookies to the browser on the
-                content level.
-              

-              

-                This filter disables most HTML and JavaScript code that reads
-                or sets cookies. It cannot detect all clever uses of these
-                types of code, so it should not be relied on as an absolute
-                fix. Use it wherever you would also use the cookie crunch
-                actions.
-              

-            

-            

-              refresh-tags
-            

-            

-              

-                Disable any refresh tags if the interval is greater than nine
-                seconds (so that redirections done via refresh tags are not
-                destroyed). This is useful for dial-on-demand setups, or for
-                those who find this HTML feature annoying.
-              

-            

-            

-              unsolicited-popups
-            

-            

-              

-                This filter attempts to prevent only "unsolicited" pop-up windows from opening, yet
-                still allow pop-up windows that the user has explicitly
-                chosen to open. It was added in version 3.0.1, as an
-                improvement over earlier such filters.
-              

-              

-                Technical note: The filter works by redefining the
-                window.open JavaScript function to a dummy function, PrivoxyWindowOpen(), during the loading
-                and rendering phase of each HTML page access, and restoring
-                the function afterward.
-              

-              

-                This is recommended only for browsers that cannot perform
-                this function reliably themselves. And be aware that some
-                sites require such windows in order to function normally. Use
-                with caution.
-              

-            

-            

-              all-popups
-            

-            

-              

-                Attempt to prevent all pop-up windows from opening. Note
-                this should be used with even more discretion than the above,
-                since it is more likely to break some sites that require
-                pop-ups for normal usage. Use with caution.
-              

-            

-            

-              img-reorder
-            

-            

-              

-                This is a helper filter that has no value if used alone. It
-                makes the banners-by-size and banners-by-link (see below) filters more
-                effective and should be enabled together with them.
-              

-            

-            

-              banners-by-size
-            

-            

-              

-                This filter removes image tags purely based on what size they
-                are. Fortunately for us, many ads and banner images tend to
-                conform to certain standardized sizes, which makes this
-                filter quite effective for ad stripping purposes.
-              

-              

-                Occasionally this filter will cause false positives on images
-                that are not ads, but just happen to be of one of the
-                standard banner sizes.
-              

-              

-                Recommended only for those who require extreme ad blocking.
-                The default block rules should catch 95+% of all ads without this
-                filter enabled.
-              

-            

-            

-              banners-by-link
-            

-            

-              

-                This is an experimental filter that attempts to kill any
-                banners if their URLs seem to point to known or suspected
-                click trackers. It is currently not of much value and is not
-                recommended for use by default.
-              

-            

-            

-              webbugs
-            

-            

-              

-                Webbugs are small, invisible images (technically 1X1 GIF
-                images), that are used to track users across websites, and
-                collect information on them. As an HTML page is loaded by the
-                browser, an embedded image tag causes the browser to contact
-                a third-party site, disclosing the tracking information
-                through the requested URL and/or cookies for that third-party
-                domain, without the user ever becoming aware of the
-                interaction with the third-party site. HTML-ized spam also
-                uses a similar technique to verify email addresses.
-              

-              

-                This filter removes the HTML code that loads such "webbugs".
-              

-            

-            

-              tiny-textforms
-            

-            

-              

-                A rather special-purpose filter that can be used to enlarge
-                textareas (those multi-line text boxes in web forms) and turn
-                off hard word wrap in them. It was written for the
-                sourceforge.net tracker system where such boxes are a
-                nuisance, but it can be handy on other sites, too.
-              

-              

-                It is not recommended to use this filter as a default.
-              

-            

-            

-              jumping-windows
-            

-            

-              

-                Many consider windows that move, or resize themselves to be
-                abusive. This filter neutralizes the related JavaScript code.
-                Note that some sites might not display or behave as intended
-                when using this filter. Use with caution.
-              

-            

-            

-              frameset-borders
-            

-            

-              

-                Some web designers seem to assume that everyone in the world
-                will view their web sites using the same browser brand and
-                version, screen resolution etc, because only that assumption
-                could explain why they'd use static frame sizes, yet prevent
-                their frames from being resized by the user, should they be
-                too small to show their whole content.
-              

-              

-                This filter removes the related HTML code. It should only be
-                applied to sites which need it.
-              

-            

-            

-              demoronizer
-            

-            

-              

-                Many Microsoft products that generate HTML use non-standard
-                extensions (read: violations) of the ISO 8859-1 aka Latin-1
-                character set. This can cause those HTML documents to display
-                with errors on standard-compliant platforms.
-              

-              

-                This filter translates the MS-only characters into Latin-1
-                equivalents. It is not necessary when using MS products, and
-                will cause corruption of all documents that use 8-bit
-                character sets other than Latin-1. It's mostly worthwhile for
-                Europeans on non-MS platforms, if weird garbage characters
-                sometimes appear on some pages, or user agents that don't
-                correct for this on the fly.
-              

-            

-            

-              shockwave-flash
-            

-            

-              

-                A filter for shockwave haters. As the name suggests, this
-                filter strips code out of web pages that is used to embed
-                shockwave flash objects.
-              

-              

-              

-            

-            

-              quicktime-kioskmode
-            

-            

-              

-                Change HTML code that embeds Quicktime objects so that
-                kioskmode, which prevents saving, is disabled.
-              

-            

-            

-              fun
-            

-            

-              

-                Text replacements for subversive browsing fun. Make fun of
-                your favorite Monopolist or play buzzword bingo.
-              

-            

-            

-              crude-parental
-            

-            

-              

-                A demonstration-only filter that shows how Privoxy can be used to delete web
-                content on a keyword basis.
-              

-            

-            

-              ie-exploits
-            

-            

-              

-                An experimental collection of text replacements to disable
-                malicious HTML and JavaScript code that exploits known
-                security holes in Internet Explorer.
-              

-              

-                Presently, it only protects against Nimda and a cross-site
-                scripting bug, and would need active maintenance to provide
-                more substantial protection.
-              

-            

-            

-              site-specifics
-            

-            

-              

-                Some web sites have very specific problems, the cure for
-                which doesn't apply anywhere else, or could even cause damage
-                on other sites.
-              

-              

-                This is a collection of such site-specific cures which should
-                only be applied to the sites they were intended for, which is
-                what the supplied default.action
-                file does. Users shouldn't need to change anything regarding
-                this filter.
-              

-            

-            

-              google
-            

-            

-              

-                A CSS based block for Google text ads. Also removes a width
-                limitation and the toolbar advertisement.
-              

-            

-            

-              yahoo
-            

-            

-              

-                Another CSS based block, this time for Yahoo text ads. And
-                removes a width limitation as well.
-              

-            

-            

-              msn
-            

-            

-              

-                Another CSS based block, this time for MSN text ads. And
-                removes tracking URLs, as well as a width limitation.
-              

-            

-            

-              blogspot
-            

-            

-              

-                Cleans up some Blogspot blogs. Read the fine print before
-                using this one!
-              

-              

-                This filter also intentionally removes some navigation stuff
-                and sets the page width to 100%. As a result, some rounded
-                "corners" would appear to early or
-                not at all and as fixing this would require a browser that
-                understands background-size (CSS3), they are removed instead.
-              

-            

-            

-              xml-to-html
-            

-            

-              

-                Server-header filter to change the Content-Type from xml to
-                html.
-              

-            

-            

-              html-to-xml
-            

-            

-              

-                Server-header filter to change the Content-Type from html to
-                xml.
-              

-            

-            

-              no-ping
-            

-            

-              

-                Removes the non-standard ping
-                attribute from anchor and area HTML tags.
-              

-            

-            

-              hide-tor-exit-notation
-            

-            

-              

-                Client-header filter to remove the Tor
-                exit node notation found in Host and Referer headers.
-              

-              

-                If Privoxy and Tor are chained and Privoxy is configured to use socks4a,
-                one can use "http://www.example.org.foobar.exit/" to
-                access the host "www.example.org"
-                through the Tor exit node "foobar".
-              

-              

-                As the HTTP client isn't aware of this notation, it treats
-                the whole string "www.example.org.foobar.exit" as host and uses
-                it for the "Host" and "Referer" headers. From the server's point of
-                view the resulting headers are invalid and can cause
-                problems.
-              

-              

-                An invalid "Referer" header can
-                trigger "hot-linking" protections,
-                an invalid "Host" header will make
-                it impossible for the server to find the right vhost (several
-                domains hosted on the same IP address).
-              

-              

-                This client-header filter removes the "foo.exit" part in those headers to prevent
-                the mentioned problems. Note that it only modifies the HTTP
-                headers, it doesn't make it impossible for the server to
-                detect your Tor exit node based on the
-                IP address the request is coming from.
-              

-            

-          

-        

+      
The x option in this job turns on extended
+      syntax, and allows for e.g. the liberal use of (non-interpreted!)
+      whitespace for nicer formatting.

+
+      
You get the idea?

+    

+
+    

+      
9.2. The Pre-defined Filters

+
+      
The distribution default.filter file
+      contains a selection of pre-defined filters for your convenience:

+
+      

+        

+          
js-annoyances

+
+          

+            
The purpose of this filter is to get rid of particularly
+            annoying JavaScript abuse. To that end, it

+
+            
    
+              
  • 
+                
    replaces JavaScript references to the browser's referrer
+                information with the string "Not Your Business!". This
+                compliments the hide-referrer
+                action on the content level.
    
+              
    • 
+
+              
  • 
+                
    removes the bindings to the DOM's unload event which we feel has no right to
+                exist and is responsible for most "exit
+                consoles", i.e. nasty windows that pop up when you
+                close another one.
    
+              
    • 
+
+              
  • 
+                
    removes code that causes new windows to be opened with
+                undesired properties, such as being full-screen,
+                non-resizeable, without location, status or menu bar etc.
    
+              
    • 
+            

+
+            
Use with caution. This is an aggressive filter, and can break
+            sites that rely heavily on JavaScript.

+          

+
+          
js-events

+
+          

+            
This is a very radical measure. It removes virtually all
+            JavaScript event bindings, which means that scripts can not react
+            to user actions such as mouse movements or clicks, window
+            resizing etc, anymore. Use with caution!

+
+            
We strongly
+            discourage using this filter as a default since it
+            breaks many legitimate scripts. It is meant for use only on
+            extra-nasty sites (should you really need to go there).

+          

+
+          
html-annoyances

+
+          

+            
This filter will undo many common instances of HTML based
+            abuse.

+
+            
The BLINK and MARQUEE tags are neutralized (yeah baby!), and
+            browser windows will be created as resizeable (as of course they
+            should be!), and will have location, scroll and menu bars -- even
+            if specified otherwise.

+          

+
+          
content-cookies

+
+          

+            
Most cookies are set in the HTTP dialog, where they can be
+            intercepted by the crunch-incoming-cookies
+            and crunch-outgoing-cookies
+            actions. But web sites increasingly make use of HTML meta tags
+            and JavaScript to sneak cookies to the browser on the content
+            level.

+
+            
This filter disables most HTML and JavaScript code that reads
+            or sets cookies. It cannot detect all clever uses of these types
+            of code, so it should not be relied on as an absolute fix. Use it
+            wherever you would also use the cookie crunch actions.

+          

+
+          
refresh-tags

+
+          

+            
Disable any refresh tags if the interval is greater than nine
+            seconds (so that redirections done via refresh tags are not
+            destroyed). This is useful for dial-on-demand setups, or for
+            those who find this HTML feature annoying.

+          

+
+          
unsolicited-popups

+
+          

+            
This filter attempts to prevent only "unsolicited" pop-up windows from opening, yet
+            still allow pop-up windows that the user has explicitly chosen to
+            open. It was added in version 3.0.1, as an improvement over
+            earlier such filters.

+
+            
Technical note: The filter works by redefining the window.open
+            JavaScript function to a dummy function, PrivoxyWindowOpen(), during the loading and
+            rendering phase of each HTML page access, and restoring the
+            function afterward.

+
+            
This is recommended only for browsers that cannot perform this
+            function reliably themselves. And be aware that some sites
+            require such windows in order to function normally. Use with
+            caution.

+          

+
+          
all-popups

+
+          

+            
Attempt to prevent all pop-up windows from opening. Note this
+            should be used with even more discretion than the above, since it
+            is more likely to break some sites that require pop-ups for
+            normal usage. Use with caution.

+          

+
+          
img-reorder

+
+          

+            
This is a helper filter that has no value if used alone. It
+            makes the banners-by-size and banners-by-link (see below) filters more effective
+            and should be enabled together with them.

+          

+
+          
banners-by-size

+
+          

+            
This filter removes image tags purely based on what size they
+            are. Fortunately for us, many ads and banner images tend to
+            conform to certain standardized sizes, which makes this filter
+            quite effective for ad stripping purposes.

+
+            
Occasionally this filter will cause false positives on images
+            that are not ads, but just happen to be of one of the standard
+            banner sizes.

+
+            
Recommended only for those who require extreme ad blocking.
+            The default block rules should catch 95+% of all ads without this filter
+            enabled.

+          

+
+          
banners-by-link

+
+          

+            
This is an experimental filter that attempts to kill any
+            banners if their URLs seem to point to known or suspected click
+            trackers. It is currently not of much value and is not
+            recommended for use by default.

+          

+
+          
webbugs

+
+          

+            
Webbugs are small, invisible images (technically 1X1 GIF
+            images), that are used to track users across websites, and
+            collect information on them. As an HTML page is loaded by the
+            browser, an embedded image tag causes the browser to contact a
+            third-party site, disclosing the tracking information through the
+            requested URL and/or cookies for that third-party domain, without
+            the user ever becoming aware of the interaction with the
+            third-party site. HTML-ized spam also uses a similar technique to
+            verify email addresses.

+
+            
This filter removes the HTML code that loads such "webbugs".

+          

+
+          
tiny-textforms

+
+          

+            
A rather special-purpose filter that can be used to enlarge
+            textareas (those multi-line text boxes in web forms) and turn off
+            hard word wrap in them. It was written for the sourceforge.net
+            tracker system where such boxes are a nuisance, but it can be
+            handy on other sites, too.

+
+            
It is not recommended to use this filter as a default.

+          

+
+          
jumping-windows

+
+          

+            
Many consider windows that move, or resize themselves to be
+            abusive. This filter neutralizes the related JavaScript code.
+            Note that some sites might not display or behave as intended when
+            using this filter. Use with caution.

+          

+
+          
frameset-borders

+
+          

+            
Some web designers seem to assume that everyone in the world
+            will view their web sites using the same browser brand and
+            version, screen resolution etc, because only that assumption
+            could explain why they'd use static frame sizes, yet prevent
+            their frames from being resized by the user, should they be too
+            small to show their whole content.

+
+            
This filter removes the related HTML code. It should only be
+            applied to sites which need it.

+          

+
+          
demoronizer

+
+          

+            
Many Microsoft products that generate HTML use non-standard
+            extensions (read: violations) of the ISO 8859-1 aka Latin-1
+            character set. This can cause those HTML documents to display
+            with errors on standard-compliant platforms.

+
+            
This filter translates the MS-only characters into Latin-1
+            equivalents. It is not necessary when using MS products, and will
+            cause corruption of all documents that use 8-bit character sets
+            other than Latin-1. It's mostly worthwhile for Europeans on
+            non-MS platforms, if weird garbage characters sometimes appear on
+            some pages, or user agents that don't correct for this on the
+            fly.

+          

+
+          
shockwave-flash

+
+          

+            
A filter for shockwave haters. As the name suggests, this
+            filter strips code out of web pages that is used to embed
+            shockwave flash objects.

+          

+
+          
quicktime-kioskmode

+
+          

+            
Change HTML code that embeds Quicktime objects so that
+            kioskmode, which prevents saving, is disabled.

+          

+
+          
fun

+
+          

+            
Text replacements for subversive browsing fun. Make fun of
+            your favorite Monopolist or play buzzword bingo.

+          

+
+          
crude-parental

+
+          

+            
A demonstration-only filter that shows how Privoxy can be used to delete web content on
+            a keyword basis.

+          

+
+          
ie-exploits

+
+          

+            
An experimental collection of text replacements to disable
+            malicious HTML and JavaScript code that exploits known security
+            holes in Internet Explorer.

+
+            
Presently, it only protects against Nimda and a cross-site
+            scripting bug, and would need active maintenance to provide more
+            substantial protection.

+          

+
+          
site-specifics

+
+          

+            
Some web sites have very specific problems, the cure for which
+            doesn't apply anywhere else, or could even cause damage on other
+            sites.

+
+            
This is a collection of such site-specific cures which should
+            only be applied to the sites they were intended for, which is
+            what the supplied default.action file
+            does. Users shouldn't need to change anything regarding this
+            filter.

+          

+
+          
google

+
+          

+            
A CSS based block for Google text ads. Also removes a width
+            limitation and the toolbar advertisement.

+          

+
+          
yahoo

+
+          

+            
Another CSS based block, this time for Yahoo text ads. And
+            removes a width limitation as well.

+          

+
+          
msn

+
+          

+            
Another CSS based block, this time for MSN text ads. And
+            removes tracking URLs, as well as a width limitation.

+          

+
+          
blogspot

+
+          

+            
Cleans up some Blogspot blogs. Read the fine print before
+            using this one!

+
+            
This filter also intentionally removes some navigation stuff
+            and sets the page width to 100%. As a result, some rounded
+            "corners" would appear to early or not
+            at all and as fixing this would require a browser that
+            understands background-size (CSS3), they are removed instead.

+          

+
+          
xml-to-html

+
+          

+            
Server-header filter to change the Content-Type from xml to
+            html.

+          

+
+          
html-to-xml

+
+          

+            
Server-header filter to change the Content-Type from html to
+            xml.

+          

+
+          
no-ping

+
+          

+            
Removes the non-standard ping
+            attribute from anchor and area HTML tags.

+          

+
+          
hide-tor-exit-notation

+
+          

+            
Client-header filter to remove the Tor
+            exit node notation found in Host and Referer headers.

+
+            
If Privoxy and Tor are chained and Privoxy is configured to use socks4a, one
+            can use "http://www.example.org.foobar.exit/" to access
+            the host "www.example.org" through the
+            Tor exit node "foobar".

+
+            
As the HTTP client isn't aware of this notation, it treats the
+            whole string "www.example.org.foobar.exit" as host and uses it
+            for the "Host" and "Referer" headers. From the server's point of view
+            the resulting headers are invalid and can cause problems.

+
+            
An invalid "Referer" header can
+            trigger "hot-linking" protections, an
+            invalid "Host" header will make it
+            impossible for the server to find the right vhost (several
+            domains hosted on the same IP address).

+
+            
This client-header filter removes the "foo.exit" part in those headers to prevent the
+            mentioned problems. Note that it only modifies the HTTP headers,
+            it doesn't make it impossible for the server to detect your
+            Tor exit node based on the IP address the
+            request is coming from.

+          

+        

       

-      

-        

-          9.3. External filter syntax
-        

-        

-          External filters are scripts or programs that can modify the
-          content in case common filters aren't powerful enough.
-        

-        

-          External filters can be written in any language the platform Privoxy runs on supports.
-        

-        

-          They are controlled with the external-filter action
-          and have to be defined in the filterfile first.
-        

-        

-          The header looks like any other filter, but instead of pcrs jobs,
-          external filters contain a single job which can be a program or a
-          shell script (which may call other scripts or programs).
-        

-        

-          External filters read the content from STDIN and write the
-          rewritten content to STDOUT. The environment variables PRIVOXY_URL,
-          PRIVOXY_PATH, PRIVOXY_HOST, PRIVOXY_ORIGIN, PRIVOXY_LISTEN_ADDRESS
-          can be used to get some details about the client request.
-        

-        

-          Privoxy will temporary store the
-          content to filter in the temporary-directory.
-        

-        

-        

-        
-          
-            

-
+    
+
+    

+      
9.3. External filter syntax

+
+      
External filters are scripts or programs that can modify the content
+      in case common filters aren't powerful enough.

+
+      
External filters can be written in any language the platform
+      Privoxy runs on supports.

+
+      
They are controlled with the external-filter action and
+      have to be defined in the filterfile first.

+
+      
The header looks like any other filter, but instead of pcrs jobs,
+      external filters contain a single job which can be a program or a shell
+      script (which may call other scripts or programs).

+
+      
External filters read the content from STDIN and write the rewritten
+      content to STDOUT. The environment variables PRIVOXY_URL, PRIVOXY_PATH,
+      PRIVOXY_HOST, PRIVOXY_ORIGIN, PRIVOXY_LISTEN_ADDRESS can be used to get
+      some details about the client request.

+
+      
Privoxy will temporary store the
+      content to filter in the temporary-directory.

+
+      
+        
+          
+        
+      

+            
 EXTERNAL-FILTER: cat Pointless example filter that doesn't actually modify the content
 /bin/cat
 
@@ -1063,62 +910,56 @@ EXTERNAL-FILTER: rotate-image Rotate an image by 180 degree. Test filter with li
 EXTERNAL-FILTER: citation-needed Adds a "[citation needed]" tag to an image. The coordinates may need adjustment.
 /usr/local/bin/convert - -pointsize 16 -fill white  -annotate +17+418 "[citation needed]" -
 

+          

+
+      

+        
+          
+            
+          
+
+          
+            
Warning

+              
Currently external filters are executed with Privoxy's privileges! Only use external
+              filters you understand and trust.

             		
           

         

-
-        

-          
-            
-              
-            
-            
-              
-            
-          

-                Warning
-              

-                

-                  Currently external filters are executed with Privoxy's privileges! Only use
-                  external filters you understand and trust.
-                

-              

-        

-        

-          External filters are experimental and the syntax may change in the
-          future.
-        

       

+
+      
External filters are experimental and the syntax may change in the
+      future.

     

-    

-      

-      
-        
-          
-          
-          
-        
-        
-          
-          
-          
-        
-      

-            Prev
-          
-            Home
-          
-            Next
-          

-            Actions Files
-          
-             
-          
-            Privoxy's Template Files
-          

-    

-  
-
+  
+
+  

+    

+
+    
+      
+        
+
+        
 
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
PrevHomeNext
Actions Files Privoxy's Template
+        Files

+  

+
+
diff --git a/doc/webserver/user-manual/index.html b/doc/webserver/user-manual/index.html
index 62d00c5d..fb50dc60 100644
--- a/doc/webserver/user-manual/index.html
+++ b/doc/webserver/user-manual/index.html
@@ -1,803 +1,641 @@
-
+
+
 
-  
-    
-      Privoxy 3.0.26 User Manual
-    
-    
-    
-    
-    
-    
-  
-  
-    

-      

-        

-          Privoxy 3.0.26 User Manual
-        

-        

-          Copyright © 2001-2016 by Privoxy
-          Developers

-        

-        

-          $Id: user-manual.sgml,v 2.214 2016/07/26 10:46:19 fabiankeil Exp
-          $

-        

-        

-          

-            
-            

-              The Privoxy User Manual gives users
-              information on how to install, configure and use Privoxy.
-            

-            

-              Privoxy is a non-caching web proxy with advanced filtering
-              capabilities for enhancing privacy, modifying web page data and
-              HTTP headers, controlling access, and removing ads and other
-              obnoxious Internet junk. Privoxy has a flexible configuration
-              and can be customized to suit individual needs and tastes. It
-              has application for both stand-alone systems and multi-user
-              networks.
-            

-            

-              Privoxy is Free Software and licensed under the GNU GPLv2.
-            

-            

-              Privoxy is an associated project of Software in the Public
-              Interest (SPI).
-            

-            

-              Helping hands and donations are welcome:
-            

-            
-
-            

-              You can find the latest version of the Privoxy User Manual at https://www.privoxy.org/user-manual/. Please see the
-              Contact section on how to contact
-              the developers.
-            

-          

+
+  Privoxy 3.0.26 User Manual
+  
+  
+  
+  
+  
+
+
+
+  

+    

+      
Privoxy 3.0.26 User
+      Manual

+
+      
Copyright ©
+      2001-2016 by Privoxy
+      Developers

+
+      
$Id: user-manual.sgml,v 2.215 2016/07/28 08:25:33
+      fabiankeil Exp $

+
+      

+        

+          
+
+          
The Privoxy User Manual gives users
+          information on how to install, configure and use Privoxy.

+
+          
Privoxy is a non-caching web proxy with advanced filtering
+          capabilities for enhancing privacy, modifying web page data and
+          HTTP headers, controlling access, and removing ads and other
+          obnoxious Internet junk. Privoxy has a flexible configuration and
+          can be customized to suit individual needs and tastes. It has
+          application for both stand-alone systems and multi-user
+          networks.

+
+          
Privoxy is Free Software and licensed under the GNU GPLv2.

+
+          
Privoxy is an associated project of Software in the Public
+          Interest (SPI).

+
+          
Helping hands and donations are welcome:

+
+          
+
+          
You can find the latest version of the Privoxy User Manual at https://www.privoxy.org/user-manual/. Please see the
+          Contact section on how to contact the
+          developers.

         

-        

-      

-      

-        

-          

-            Table of Contents
-          

-          

-            1. Introduction
-          

-          

-            

-              

-                1.1. Features
-              

-            

-          

-          

-            2. Installation
-          

-          

-            

-              

-                2.1. Binary
-                Packages
-              

-              

-                

-                  

-                    2.1.1. Debian and
-                    Ubuntu
-                  

-                  

-                    2.1.2. Windows
-                  

-                  

-                    2.1.3. OS/2
-                  

-                  

-                    2.1.4. Mac
-                    OS X
-                  

-                  

-                    2.1.5. Installation
-                    from ready-built package
-                  

-                  

-                    2.1.6. Installation
-                    from source
-                  

-                  

-                    2.1.7. FreeBSD
-                  

-                

-              

-              

-                2.2. Building
-                from Source
-              

-              

-                2.3. Keeping your
-                Installation Up-to-Date
-              

-            

-          

-          

-            3. What's New in this Release
-          

-          

-            

-              

-                3.1. Note to
-                Upgraders
-              

-            

-          

-          

-            4. Quickstart to Using Privoxy
-          

-          

-            

-              

-                4.1. Quickstart to Ad
-                Blocking
-              

-            

-          

-          

-            5. Starting Privoxy
-          

-          

-            

-              

-                5.1. Debian
-              

-              

-                5.2. FreeBSD and
-                ElectroBSD
-              

-              

-                5.3. Windows
-              

-              

-                5.4. Generic instructions
-                for Unix derivates (Solaris, NetBSD, HP-UX etc.)
-              

-              

-                5.5. OS/2
-              

-              

-                5.6. Mac OS X
-              

-              

-                5.7. Command Line
-                Options
-              

-            

-          

-          

-            6. Privoxy Configuration
-          

-          

-            

-              

-                6.1. Controlling
-                Privoxy with Your Web Browser
-              

-              

-                6.2. Configuration
-                Files Overview
-              

-            

-          

-          

-            7. The Main Configuration File
-          

-          

-            

-              

-                7.1. Local Set-up
-                Documentation
-              

-              

-                

-                  

-                    7.1.1. user-manual
-                  

-                  

-                    7.1.2. trust-info-url
-                  

-                  

-                    7.1.3. admin-address
-                  

-                  

-                    7.1.4. proxy-info-url
-                  

-                

-              

-              

-                7.2. Configuration and Log
-                File Locations
-              

-              

-                

-                  

-                    7.2.1. confdir
-                  

-                  

-                    7.2.2. templdir
-                  

-                  

-                    7.2.3. temporary-directory
-                  

-                  

-                    7.2.4. logdir
-                  

-                  

-                    7.2.5. actionsfile
-                  

-                  

-                    7.2.6. filterfile
-                  

-                  

-                    7.2.7. logfile
-                  

-                  

-                    7.2.8. trustfile
-                  

-                

-              

-              

-                7.3. Debugging
-              

-              

-                

-                  

-                    7.3.1. debug
-                  

-                  

-                    7.3.2. single-threaded
-                  

-                  

-                    7.3.3. hostname
-                  

-                

-              

-              

-                7.4. Access Control and
-                Security
-              

-              

-                

-                  

-                    7.4.1. listen-address
-                  

-                  

-                    7.4.2. toggle
-                  

-                  

-                    7.4.3. enable-remote-toggle
-                  

-                  

-                    7.4.4. enable-remote-http-toggle
-                  

-                  

-                    7.4.5. enable-edit-actions
-                  

-                  

-                    7.4.6. enforce-blocks
-                  

-                  

-                    7.4.7. ACLs: permit-access and
-                    deny-access
-                  

-                  

-                    7.4.8. buffer-limit
-                  

-                  

-                    7.4.9. enable-proxy-authentication-forwarding
-                  

-                

-              

-              

-                7.5. Forwarding
-              

-              

-                

-                  

-                    7.5.1. forward
-                  

-                  

-                    7.5.2. forward-socks4,
-                    forward-socks4a, forward-socks5 and forward-socks5t
-                  

-                  

-                    7.5.3. Advanced
-                    Forwarding Examples
-                  

-                  

-                    7.5.4. forwarded-connect-retries
-                  

-                

-              

-              

-                7.6. Miscellaneous
-              

-              

-                

-                  

-                    7.6.1. accept-intercepted-requests
-                  

-                  

-                    7.6.2. allow-cgi-request-crunching
-                  

-                  

-                    7.6.3. split-large-forms
-                  

-                  

-                    7.6.4. keep-alive-timeout
-                  

-                  

-                    7.6.5. tolerate-pipelining
-                  

-                  

-                    7.6.6. default-server-timeout
-                  

-                  

-                    7.6.7. connection-sharing
-                  

-                  

-                    7.6.8. socket-timeout
-                  

-                  

-                    7.6.9. max-client-connections
-                  

-                  

-                    7.6.10. handle-as-empty-doc-returns-ok
-                  

-                  

-                    7.6.11. enable-compression
-                  

-                  

-                    7.6.12. compression-level
-                  

-                  

-                    7.6.13. client-header-order
-                  

-                  

-                    7.6.14. client-specific-tag
-                  

-                  

-                    7.6.15. client-tag-lifetime
-                  

-                  

-                    7.6.16. trust-x-forwarded-for
-                  

-                

-              

-              

-                7.7. Windows GUI
-                Options
-              

-            

-          

-          

-            8. Actions Files
-          

-          

-            

-              

-                8.1. Finding the Right
-                Mix
-              

-              

-                8.2. How to Edit
-              

-              

-                8.3. How Actions
-                are Applied to Requests
-              

-              

-                8.4. Patterns
-              

-              

-                

-                  

-                    8.4.1. The Host
-                    Pattern
-                  

-                  

-                    8.4.2. The Path
-                    Pattern
-                  

-                  

-                    8.4.3. The
-                    Request Tag Pattern
-                  

-                  

-                    8.4.4. The Negative
-                    Request Tag Patterns
-                  

-                  

-                    8.4.5. The
-                    Client Tag Pattern
-                  

-                

-              

-              

-                8.5. Actions
-              

-              

-                

-                  

-                    8.5.1. add-header
-                  

-                  

-                    8.5.2. block
-                  

-                  

-                    8.5.3. change-x-forwarded-for
-                  

-                  

-                    8.5.4. client-header-filter
-                  

-                  

-                    8.5.5. client-header-tagger
-                  

-                  

-                    8.5.6. content-type-overwrite
-                  

-                  

-                    8.5.7. crunch-client-header
-                  

-                  

-                    8.5.8. crunch-if-none-match
-                  

-                  

-                    8.5.9. crunch-incoming-cookies
-                  

-                  

-                    8.5.10. crunch-server-header
-                  

-                  

-                    8.5.11. crunch-outgoing-cookies
-                  

-                  

-                    8.5.12. deanimate-gifs
-                  

-                  

-                    8.5.13. downgrade-http-version
-                  

-                  

-                    8.5.14. external-filter
-                  

-                  

-                    8.5.15. fast-redirects
-                  

-                  

-                    8.5.16. filter
-                  

-                  

-                    8.5.17. force-text-mode
-                  

-                  

-                    8.5.18. forward-override
-                  

-                  

-                    8.5.19. handle-as-empty-document
-                  

-                  

-                    8.5.20. handle-as-image
-                  

-                  

-                    8.5.21. hide-accept-language
-                  

-                  

-                    8.5.22. hide-content-disposition
-                  

-                  

-                    8.5.23. hide-if-modified-since
-                  

-                  

-                    8.5.24. hide-from-header
-                  

-                  

-                    8.5.25. hide-referrer
-                  

-                  

-                    8.5.26. hide-user-agent
-                  

-                  

-                    8.5.27. limit-connect
-                  

-                  

-                    8.5.28. limit-cookie-lifetime
-                  

-                  

-                    8.5.29. prevent-compression
-                  

-                  

-                    8.5.30. overwrite-last-modified
-                  

-                  

-                    8.5.31. redirect
-                  

-                  

-                    8.5.32. server-header-filter
-                  

-                  

-                    8.5.33. server-header-tagger
-                  

-                  

-                    8.5.34. session-cookies-only
-                  

-                  

-                    8.5.35. set-image-blocker
-                  

-                  

-                    8.5.36. Summary
-                  

-                

-              

-              

-                8.6. Aliases
-              

-              

-                8.7. Actions Files
-                Tutorial
-              

-              

-                

-                  

-                    8.7.1. match-all.action
-                  

-                  

-                    8.7.2. default.action
-                  

-                  

-                    8.7.3. user.action
-                  

-                

-              

-            

-          

-          

-            9. Filter Files
-          

-          

-            

-              

-                9.1. Filter File
-                Tutorial
-              

-              

-                9.2. The
-                Pre-defined Filters
-              

-              

-                9.3. External filter
-                syntax
-              

-            

-          

-          

-            10. Privoxy's Template Files
-          

-          

-            11. Contacting the Developers, Bug
-            Reporting and Feature Requests
-          

-          

-            

-              

-                11.1. Please
-                provide sufficient information
-              

-              

-                11.2. Get Support
-              

-              

-                11.3. Reporting Problems
-              

-              

-                

-                  

-                    11.3.1. Reporting Ads
-                    or Other Configuration Problems
-                  

-                  

-                    11.3.2. Reporting
-                    Bugs
-                  

-                

-              

-              

-                11.4. Reporting
-                security problems
-              

-              

-                11.5. Mailing Lists
-              

-              

-                11.6. SourceForge support
-                trackers
-              

-            

-          

-          

-            12. Privoxy Copyright, License and
-            History
-          

-          

-            

-              

-                12.1. License
-              

-              

-                12.2. History
-              

-              

-                12.3. Authors
-              

-            

-          

-          

-            13. See Also
-          

-          

-            14. Appendix
-          

-          

-            

-              

-                14.1. Regular Expressions
-              

-              

-                14.2. Privoxy's
-                Internal Pages
-              

-              

-                14.3. Chain of Events
-              

-              

-                14.4. Troubleshooting:
-                Anatomy of an Action
-              

-            

-          

-        

       

+      

     

-    

-      

-      
-        
-          
-          
-          
-        
-        
-          
-          
-          
-        
-      

-             
-          
-             
-          
-            Next
-          

-             
-          
-             
-          
-            Introduction
-          

+
+    

+      

+        
Table of Contents

+
+        
1. Introduction

+
+        

+          

+            
1.1. Features

+          

+        

+
+        
2. Installation

+
+        

+          

+            
2.1. Binary
+            Packages

+
+            

+              

+                
2.1.1. Debian and
+                Ubuntu

+
+                
2.1.2. Windows

+
+                
2.1.3. OS/2

+
+                
2.1.4. Mac
+                OS X

+
+                
2.1.5. Installation
+                from ready-built package

+
+                
2.1.6. Installation
+                from source

+
+                
2.1.7. FreeBSD

+              

+            

+
+            
2.2. Building
+            from Source

+
+            
2.3. Keeping your
+            Installation Up-to-Date

+          

+        

+
+        
3. What's New in this Release

+
+        

+          

+            
3.1. Note to
+            Upgraders

+          

+        

+
+        
4. Quickstart to Using Privoxy

+
+        

+          

+            
4.1. Quickstart to Ad
+            Blocking

+          

+        

+
+        
5. Starting Privoxy

+
+        

+          

+            
5.1. Debian

+
+            
5.2. FreeBSD and
+            ElectroBSD

+
+            
5.3. Windows

+
+            
5.4. Generic instructions
+            for Unix derivates (Solaris, NetBSD, HP-UX etc.)

+
+            
5.5. OS/2

+
+            
5.6. Mac OS X

+
+            
5.7. Command Line
+            Options

+          

+        

+
+        
6. Privoxy Configuration

+
+        

+          

+            
6.1. Controlling Privoxy
+            with Your Web Browser

+
+            
6.2. Configuration
+            Files Overview

+          

+        

+
+        
7. The Main Configuration File

+
+        

+          

+            
7.1. Local Set-up
+            Documentation

+
+            

+              

+                
7.1.1. user-manual

+
+                
7.1.2. trust-info-url

+
+                
7.1.3. admin-address

+
+                
7.1.4. proxy-info-url

+              

+            

+
+            
7.2. Configuration and Log
+            File Locations

+
+            

+              

+                
7.2.1. confdir

+
+                
7.2.2. templdir

+
+                
7.2.3. temporary-directory

+
+                
7.2.4. logdir

+
+                
7.2.5. actionsfile

+
+                
7.2.6. filterfile

+
+                
7.2.7. logfile

+
+                
7.2.8. trustfile

+              

+            

+
+            
7.3. Debugging

+
+            

+              

+                
7.3.1. debug

+
+                
7.3.2. single-threaded

+
+                
7.3.3. hostname

+              

+            

+
+            
7.4. Access Control and
+            Security

+
+            

+              

+                
7.4.1. listen-address

+
+                
7.4.2. toggle

+
+                
7.4.3. enable-remote-toggle

+
+                
7.4.4. enable-remote-http-toggle

+
+                
7.4.5. enable-edit-actions

+
+                
7.4.6. enforce-blocks

+
+                
7.4.7. ACLs: permit-access and
+                deny-access

+
+                
7.4.8. buffer-limit

+
+                
7.4.9. enable-proxy-authentication-forwarding

+              

+            

+
+            
7.5. Forwarding

+
+            

+              

+                
7.5.1. forward

+
+                
7.5.2. forward-socks4,
+                forward-socks4a, forward-socks5 and forward-socks5t

+
+                
7.5.3. Advanced
+                Forwarding Examples

+
+                
7.5.4. forwarded-connect-retries

+              

+            

+
+            
7.6. Miscellaneous

+
+            

+              

+                
7.6.1. accept-intercepted-requests

+
+                
7.6.2. allow-cgi-request-crunching

+
+                
7.6.3. split-large-forms

+
+                
7.6.4. keep-alive-timeout

+
+                
7.6.5. tolerate-pipelining

+
+                
7.6.6. default-server-timeout

+
+                
7.6.7. connection-sharing

+
+                
7.6.8. socket-timeout

+
+                
7.6.9. max-client-connections

+
+                
7.6.10. handle-as-empty-doc-returns-ok

+
+                
7.6.11. enable-compression

+
+                
7.6.12. compression-level

+
+                
7.6.13. client-header-order

+
+                
7.6.14. client-specific-tag

+
+                
7.6.15. client-tag-lifetime

+
+                
7.6.16. trust-x-forwarded-for

+              

+            

+
+            
7.7. Windows GUI
+            Options

+          

+        

+
+        
8. Actions Files

+
+        

+          

+            
8.1. Finding the Right
+            Mix

+
+            
8.2. How to
+            Edit

+
+            
8.3. How Actions
+            are Applied to Requests

+
+            
8.4. Patterns

+
+            

+              

+                
8.4.1. The Host
+                Pattern

+
+                
8.4.2. The Path
+                Pattern

+
+                
8.4.3. The
+                Request Tag Pattern

+
+                
8.4.4. The Negative
+                Request Tag Patterns

+
+                
8.4.5. The
+                Client Tag Pattern

+              

+            

+
+            
8.5. Actions

+
+            

+              

+                
8.5.1. add-header

+
+                
8.5.2. block

+
+                
8.5.3. change-x-forwarded-for

+
+                
8.5.4. client-header-filter

+
+                
8.5.5. client-header-tagger

+
+                
8.5.6. content-type-overwrite

+
+                
8.5.7. crunch-client-header

+
+                
8.5.8. crunch-if-none-match

+
+                
8.5.9. crunch-incoming-cookies

+
+                
8.5.10. crunch-server-header

+
+                
8.5.11. crunch-outgoing-cookies

+
+                
8.5.12. deanimate-gifs

+
+                
8.5.13. downgrade-http-version

+
+                
8.5.14. external-filter

+
+                
8.5.15. fast-redirects

+
+                
8.5.16. filter

+
+                
8.5.17. force-text-mode

+
+                
8.5.18. forward-override

+
+                
8.5.19. handle-as-empty-document

+
+                
8.5.20. handle-as-image

+
+                
8.5.21. hide-accept-language

+
+                
8.5.22. hide-content-disposition

+
+                
8.5.23. hide-if-modified-since

+
+                
8.5.24. hide-from-header

+
+                
8.5.25. hide-referrer

+
+                
8.5.26. hide-user-agent

+
+                
8.5.27. limit-connect

+
+                
8.5.28. limit-cookie-lifetime

+
+                
8.5.29. prevent-compression

+
+                
8.5.30. overwrite-last-modified

+
+                
8.5.31. redirect

+
+                
8.5.32. server-header-filter

+
+                
8.5.33. server-header-tagger

+
+                
8.5.34. session-cookies-only

+
+                
8.5.35. set-image-blocker

+
+                
8.5.36. Summary

+              

+            

+
+            
8.6. Aliases

+
+            
8.7. Actions Files
+            Tutorial

+
+            

+              

+                
8.7.1. match-all.action

+
+                
8.7.2. default.action

+
+                
8.7.3. user.action

+              

+            

+          

+        

+
+        
9. Filter Files

+
+        

+          

+            
9.1. Filter File
+            Tutorial

+
+            
9.2. The
+            Pre-defined Filters

+
+            
9.3. External filter
+            syntax

+          

+        

+
+        
10. Privoxy's Template Files

+
+        
11. Contacting the Developers, Bug
+        Reporting and Feature Requests

+
+        

+          

+            
11.1. Please
+            provide sufficient information

+
+            
11.2. Get
+            Support

+
+            
11.3. Reporting
+            Problems

+
+            

+              

+                
11.3.1. Reporting Ads
+                or Other Configuration Problems

+
+                
11.3.2. Reporting
+                Bugs

+              

+            

+
+            
11.4. Reporting
+            security problems

+
+            
11.5. Mailing
+            Lists

+
+            
11.6. SourceForge support
+            trackers

+          

+        

+
+        
12. Privoxy Copyright, License and
+        History

+
+        

+          

+            
12.1. License

+
+            
12.2. History

+
+            
12.3. Authors

+          

+        

+
+        
13. See Also

+
+        
14. Appendix

+
+        

+          

+            
14.1. Regular
+            Expressions

+
+            
14.2. Privoxy's
+            Internal Pages

+
+            
14.3. Chain of Events

+
+            
14.4. Troubleshooting:
+            Anatomy of an Action

+          

+        

+      

     

-  
-
+  

+
+  

+    

+
+    
+      
+        
 
+        
+
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
  Next
  Introduction

+  

+
+
diff --git a/doc/webserver/user-manual/installation.html b/doc/webserver/user-manual/installation.html
index 95f76100..6b08b614 100644
--- a/doc/webserver/user-manual/installation.html
+++ b/doc/webserver/user-manual/installation.html
@@ -1,385 +1,331 @@
-
+
+
 
-  
-    
-      Installation
-    
-    
-    
-    
-    
-    
-    
-    
-  
-  
-    

-      
-        
-          
-        
+
+  Installation
+  
+  
+  
+  
+  
+  
+  
+
+
+
+  

+    

-            Privoxy 3.0.26 User Manual
-          

+      
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
Privoxy 3.0.26 User Manual
PrevNext

+    

+  

+
+  

+    
2.
+    Installation

+
+    
Privoxy is available both in
+    convenient pre-compiled packages for a wide range of operating systems,
+    and as raw source code. For most users, we recommend using the packages,
+    which can be downloaded from our Privoxy Project
+    Page.

+
+    
Note: On some platforms, the installer may remove previously installed
+    versions, if found. (See below for your platform). In any case
+    be sure to backup your old
+    configuration if it is valuable to you. See the note to upgraders section below.

+
+    

+      
2.1. Binary Packages

+
+      
How to install the binary packages depends on your operating
+      system:

+
+      

+        
2.1.1. Debian and Ubuntu

+
+        
DEBs can be installed with apt-get install
+        privoxy, and will use /etc/privoxy for
+        the location of configuration files.

+      

+
+      

+        
2.1.2. Windows

+
+        
Just double-click the installer, which will guide you through the
+        installation process. You will find the configuration files in the
+        same directory as you installed Privoxy in.

+
+        
Version 3.0.5 beta introduced full Windows service functionality. On Windows only,
+        the Privoxy program has two new
+        command line arguments to install and uninstall Privoxy as a service.

+
+        

+          

+            
Arguments:

+
+            

+              
--install[:service_name]

+
+              
--uninstall[:service_name]

+            

+          

+        

+
+        
After invoking Privoxy with
+        --install, you will need to bring up the
+        Windows service console to assign
+        the user you want Privoxy to run
+        under, and whether or not you want it to run whenever the system
+        starts. You can start the Windows
+        services console with the following command: services.msc. If you do not take the manual step of
+        modifying Privoxy's service
+        settings, it will not start. Note too that you will need to give
+        Privoxy a user account that actually exists, or it will not be
+        permitted to write to its log and configuration files.

+      

+
+      

+        
2.1.3. OS/2

+
+        
First, make sure that no previous installations of Junkbuster and / or Privoxy are left on your system. Check that no
+        Junkbuster or Privoxy objects are in your startup folder.

+
+        
Then, just double-click the WarpIN self-installing archive, which
+        will guide you through the installation process. A shadow of the
+        Privoxy executable will be placed in
+        your startup folder so it will start automatically whenever OS/2
+        starts.

+
+        
The directory you choose to install Privoxy into will contain all of the
+        configuration files.

+      

+
+      

+        
2.1.4. Mac OS X

+
+        
Installation instructions for the OS X platform depend upon
+        whether you downloaded a ready-built installation package (.pkg or
+        .mpkg) or have downloaded the source code.

+      

+
+      

+        
2.1.5. Installation from ready-built
+        package

+
+        
The downloaded file will either be a .pkg (for OS X 10.5 upwards)
+        or a bzipped .mpkg file (for OS X 10.4). The former can be
+        double-clicked as is and the installation will start; double-clicking
+        the latter will unzip the .mpkg file which can then be double-clicked
+        to commence the installation.

+
+        
The privoxy service will automatically start after a successful
+        installation (and thereafter every time your computer starts up)
+        however you will need to configure your web browser(s) to use it. To
+        do so, configure them to use a proxy for HTTP and HTTPS at the
+        address 127.0.0.1:8118.

+
+        
To prevent the privoxy service from automatically starting when
+        your computer starts up, remove or rename the file /Library/LaunchDaemons/org.ijbswa.privoxy.plist (on OS
+        X 10.5 and higher) or the folder named /Library/StartupItems/Privoxy (on OS X 10.4
+        'Tiger').

+
+        
To manually start or stop the privoxy service, use the scripts
+        startPrivoxy.sh and stopPrivoxy.sh supplied in /Applications/Privoxy.
+        They must be run from an administrator account, using sudo.

+
+        
To uninstall, run /Applications/Privoxy/uninstall.command as sudo
+        from an administrator account.

+      

+
+      

+        
2.1.6. Installation from source

+
+        
To build and install the Privoxy source code on OS X you will need
+        to obtain the macsetup module from the Privoxy Sourceforge CVS
+        repository (refer to Sourceforge help for details of how to set up a
+        CVS client to have read-only access to the repository). This module
+        contains scripts that leverage the usual open-source tools (available
+        as part of Apple's free of charge Xcode distribution or via the usual
+        open-source software package managers for OS X (MacPorts, Homebrew,
+        Fink etc.) to build and then install the privoxy binary and
+        associated files. The macsetup module's README file contains complete
+        instructions for its use.

+
+        
The privoxy service will automatically start after a successful
+        installation (and thereafter every time your computer starts up)
+        however you will need to configure your web browser(s) to use it. To
+        do so, configure them to use a proxy for HTTP and HTTPS at the
+        address 127.0.0.1:8118.

+
+        
To prevent the privoxy service from automatically starting when
+        your computer starts up, remove or rename the file /Library/LaunchDaemons/org.ijbswa.privoxy.plist (on OS
+        X 10.5 and higher) or the folder named /Library/StartupItems/Privoxy (on OS X 10.4
+        'Tiger').

+
+        
To manually start or stop the privoxy service, use the Privoxy
+        Utility for Mac OS X (also part of the macsetup module). This
+        application can start and stop the privoxy service and display its
+        log and configuration files.

+
+        
To uninstall, run the macsetup module's uninstall.sh as sudo from
+        an administrator account.

+      

+
+      

+        
2.1.7. FreeBSD

+
+        
Privoxy is part of FreeBSD's Ports Collection, you can build and
+        install it with cd /usr/ports/www/privoxy; make
+        install clean.

+      

+    

+
+    

+      
2.2. Building from Source

+
+      
The most convenient way to obtain the Privoxy sources is to download the source tarball
+      from our project download page.

+
+      
If you like to live on the bleeding edge and are not afraid of using
+      possibly unstable development versions, you can check out the
+      up-to-the-minute version directly from the CVS repository.

+
+      
To build Privoxy from source,
+      autoconf, GNU make
+      (gmake), and, of course, a C compiler like gcc are
+      required.

+
+      
When building from a source tarball, first unpack the source:

+
+      
-          
-          
-          

         

-            Prev
-          
-          
-            Next
+          
+            
+ tar xzvf privoxy-3.0.26-stable-src.tar.gz
+ cd privoxy-3.0.26-stable
+

           		
         

       

-      

-    

-    

-      

-        2. Installation
-      

-      

-        Privoxy is available both in
-        convenient pre-compiled packages for a wide range of operating
-        systems, and as raw source code. For most users, we recommend using
-        the packages, which can be downloaded from our Privoxy
-        Project Page.
-      

-      

-        Note: On some platforms, the installer may remove previously
-        installed versions, if found. (See below for your platform). In any
-        case be sure to backup
-        your old configuration if it is valuable to you. See the
-        note to upgraders section
-        below.
-      

-      

-        

-          2.1. Binary Packages
-        

-        

-          How to install the binary packages depends on your operating
-          system:
-        

-        

-          

-            2.1.1. Debian and Ubuntu
-          

-          

-            DEBs can be installed with apt-get install
-            privoxy, and will use /etc/privoxy
-            for the location of configuration files.
-          

-        

-        

-          

-            2.1.2. Windows
-          

-          

-            Just double-click the installer, which will guide you through the
-            installation process. You will find the configuration files in
-            the same directory as you installed Privoxy in.
-          

-          

-            Version 3.0.5 beta introduced full Windows service functionality. On Windows
-            only, the Privoxy program has
-            two new command line arguments to install and uninstall Privoxy as a service.
-          

-          

-            

-              

-                Arguments:
-              

-              

-                

-                  --install[:service_name]
-                

-                

-                  --uninstall[:service_name]
-                

-              

-            

-          

-          

-            After invoking Privoxy with --install, you will need to bring up the
-            Windows service console to
-            assign the user you want Privoxy
-            to run under, and whether or not you want it to run whenever the
-            system starts. You can start the Windows services console with the following
-            command: services.msc. If you do not take
-            the manual step of modifying Privoxy's service settings, it will not
-            start. Note too that you will need to give Privoxy a user account
-            that actually exists, or it will not be permitted to write to its
-            log and configuration files.
-          

-        

-        

-          

-            2.1.3. OS/2
-          

-          

-            First, make sure that no previous installations of Junkbuster and / or Privoxy are left on your system. Check that
-            no Junkbuster or Privoxy objects are in your startup
-            folder.
-          

-          

-            Then, just double-click the WarpIN self-installing archive, which
-            will guide you through the installation process. A shadow of the
-            Privoxy executable will be
-            placed in your startup folder so it will start automatically
-            whenever OS/2 starts.
-          

-          

-            The directory you choose to install Privoxy into will contain all of the
-            configuration files.
-          

-        

-        

-          

-            2.1.4. Mac OS X
-          

-          

-            Installation instructions for the OS X platform depend upon
-            whether you downloaded a ready-built installation package (.pkg
-            or .mpkg) or have downloaded the source code.
-          

-        

-        

-          

-            2.1.5. Installation from
-            ready-built package
-          

-          

-            The downloaded file will either be a .pkg (for OS X 10.5 upwards)
-            or a bzipped .mpkg file (for OS X 10.4). The former can be
-            double-clicked as is and the installation will start;
-            double-clicking the latter will unzip the .mpkg file which can
-            then be double-clicked to commence the installation.
-          

-          

-            The privoxy service will automatically start after a successful
-            installation (and thereafter every time your computer starts up)
-            however you will need to configure your web browser(s) to use it.
-            To do so, configure them to use a proxy for HTTP and HTTPS at the
-            address 127.0.0.1:8118.
-          

-          

-            To prevent the privoxy service from automatically starting when
-            your computer starts up, remove or rename the file /Library/LaunchDaemons/org.ijbswa.privoxy.plist
-            (on OS X 10.5 and higher) or the folder named /Library/StartupItems/Privoxy (on OS X 10.4
-            'Tiger').
-          

-          

-            To manually start or stop the privoxy service, use the scripts
-            startPrivoxy.sh and stopPrivoxy.sh supplied in
-            /Applications/Privoxy. They must be run from an administrator
-            account, using sudo.
-          

-          

-            To uninstall, run /Applications/Privoxy/uninstall.command as sudo
-            from an administrator account.
-          

-        

-        

-          

-            2.1.6. Installation from
-            source
-          

-          

-            To build and install the Privoxy source code on OS X you will
-            need to obtain the macsetup module from the Privoxy Sourceforge
-            CVS repository (refer to Sourceforge help for details of how to
-            set up a CVS client to have read-only access to the repository).
-            This module contains scripts that leverage the usual open-source
-            tools (available as part of Apple's free of charge Xcode
-            distribution or via the usual open-source software package
-            managers for OS X (MacPorts, Homebrew, Fink etc.) to build and
-            then install the privoxy binary and associated files. The
-            macsetup module's README file contains complete instructions for
-            its use.
-          

-          

-            The privoxy service will automatically start after a successful
-            installation (and thereafter every time your computer starts up)
-            however you will need to configure your web browser(s) to use it.
-            To do so, configure them to use a proxy for HTTP and HTTPS at the
-            address 127.0.0.1:8118.
-          

-          

-            To prevent the privoxy service from automatically starting when
-            your computer starts up, remove or rename the file /Library/LaunchDaemons/org.ijbswa.privoxy.plist
-            (on OS X 10.5 and higher) or the folder named /Library/StartupItems/Privoxy (on OS X 10.4
-            'Tiger').
-          

-          

-            To manually start or stop the privoxy service, use the Privoxy
-            Utility for Mac OS X (also part of the macsetup module). This
-            application can start and stop the privoxy service and display
-            its log and configuration files.
-          

-          

-            To uninstall, run the macsetup module's uninstall.sh as sudo from
-            an administrator account.
-          

-        

-        

-          

-            2.1.7. FreeBSD
-          

-          

-            Privoxy is part of FreeBSD's Ports Collection, you can build and
-            install it with cd /usr/ports/www/privoxy;
-            make install clean.
-          

-        

-      

-      

-        

-          2.2. Building from Source
-        

-        

-          The most convenient way to obtain the Privoxy sources is to download the source
-          tarball from our project download page.
-        

-        

-          If you like to live on the bleeding edge and are not afraid of
-          using possibly unstable development versions, you can check out the
-          up-to-the-minute version directly from the CVS repository.
-        

-        

-          To build Privoxy from source, autoconf, GNU make
-          (gmake), and, of course, a C compiler like gcc
-          are required.
-        

-        

-          When building from a source tarball, first unpack the source:
-        

-        

-        

-        
-          
-            
-          
-        

-
- tar xzvf privoxy-3.0.26-beta-src.tar.gz
- cd privoxy-3.0.26-beta
-

-            

-
-        

-          For retrieving the current CVS sources, you'll need a CVS client
-          installed. Note that sources from CVS are typically development
-          quality, and may not be stable, or well tested. To download CVS
-          source, check the Sourceforge documentation, which might give
-          commands like:
-        

-        

-        

-        
-          
-            
+    

-
+
+      
For retrieving the current CVS sources, you'll need a CVS client
+      installed. Note that sources from CVS are typically development
+      quality, and may not be stable, or well tested. To download CVS source,
+      check the Sourceforge documentation, which might give commands
+      like:

+
+      
+        
+          
-          
-        

+            
   cvs -d:pserver:anonymous@ijbswa.cvs.sourceforge.net:/cvsroot/ijbswa login
   cvs -z3 -d:pserver:anonymous@ijbswa.cvs.sourceforge.net:/cvsroot/ijbswa co current
   cd current
 

-            

-
-        

-          This will create a directory named current/, which will contain the source tree.
-        

-        

-          You can also check out any Privoxy
-          "branch", just exchange the current name with the wanted branch name
-          (Example: v_3_0_branch for the 3.0 cvs tree).
-        

-        

-          It is also strongly recommended to not run Privoxy as root. You should
-          configure/install/run Privoxy as
-          an unprivileged user, preferably by creating a "privoxy" user and group just for this purpose. See
-          your local documentation for the correct command line to do add new
-          users and groups (something like adduser,
-          but the command syntax may vary from platform to platform).
-        

-        

-          /etc/passwd might then look like:
-        

-        

-        

-        
-          
-            
+        
+      

-
+          

+
+      
This will create a directory named current/, which will contain the source tree.

+
+      
You can also check out any Privoxy
+      "branch", just exchange the current name with the wanted branch name (Example:
+      v_3_0_branch for the 3.0 cvs tree).

+
+      
It is also strongly recommended to not run Privoxy as root. You should configure/install/run
+      Privoxy as an unprivileged user,
+      preferably by creating a "privoxy" user and
+      group just for this purpose. See your local documentation for the
+      correct command line to do add new users and groups (something like
+      adduser, but the command syntax may vary from
+      platform to platform).

+
+      
/etc/passwd might then look like:

+
+      
+        
+          
-          
-        

+            
   privoxy:*:7777:7777:privoxy proxy:/no/home:/no/shell
 

-            

-
-        

-          And then /etc/group, like:
-        

-        

-        

-        
-          
-            
+        
+      

-
+          

+
+      
And then /etc/group, like:

+
+      
+        
+          
-          
-        

+            
   privoxy:*:7777:
 

-            

-
-        

-          Some binary packages may do this for you.
-        

-        

-          Then, to build from either unpacked tarball or CVS source:
-        

-        

-        

-        
-          
-            
+        
+      

-
+          

+
+      
Some binary packages may do this for you.

+
+      
Then, to build from either unpacked tarball or CVS source:

+
+      
+        
+          
-          
-        

+            
  autoheader
  autoconf
  ./configure      # (--help to see options)
@@ -388,217 +334,187 @@ Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
  make -n install  # (to see where all the files will go)
  make -s install  # (to really install, -s to silence output)
 

-            

-
-        

-          Using GNU make, you can have the first four
-          steps automatically done for you by just typing:
-        

-        

-        

-        
-          
-            
+        
+      

-
+          

+
+      
Using GNU make, you can have the first four
+      steps automatically done for you by just typing:

+
+      
+        
+          
-          
-        

+            
   make
 

-            

-
-        

-          in the freshly downloaded or unpacked source directory.
-        

-        

-          To build an executable with security enhanced features so that
-          users cannot easily bypass the proxy (e.g. "Go
-          There Anyway"), or alter their own configurations, configure like this:
-        

-        

-        

-        
-          
-            
+        
+      

-
+          

+
+      
in the freshly downloaded or unpacked source directory.

+
+      
To build an executable with security enhanced features so that users
+      cannot easily bypass the proxy (e.g. "Go There
+      Anyway"), or alter their own configurations, configure like this:

+
+      
+        
+          
-          
-        

+            
  ./configure  --disable-toggle  --disable-editor  --disable-force
 

-            

-
-        

-          Note that all of these options can also be disabled through the
-          configuration file.
-        

-        

-          WARNING: If
-          installing as root, the install will fail unless a non-root user or
-          group is specified, or a privoxy user and
-          group already exist on the system. If a non-root user is specified,
-          and no group, then the installation will try to also use a group of
-          the same name as "user". If a group is
-          specified (and no user), then the support files will be installed
-          as writable by that group, and owned by the user running the
-          installation.
-        

-        

-          configure accepts --with-user and --with-group options for setting user and group
-          ownership of the configuration files (which need to be writable by
-          the daemon). The specified user must already exist. When starting Privoxy, it must be run as this same
-          user to insure write access to configuration and log files!
-        

-        

-          Alternately, you can specify user and group on the make
-          command line, but be sure both already exist:
-        

-        

-        

-        
-          
-            
-          
-        

-
- make -s install  USER=privoxy GROUP=privoxy
-

-            

-
-        

-          The default installation path for make
-          install is /usr/local. This may of
-          course be customized with the various ./configure path options. If you are doing an install
-          to anywhere besides /usr/local, be sure
-          to set the appropriate paths with the correct configure options (./configure --help). Non-privileged users must
-          of course have write access permissions to wherever the target
-          installation is going.
-        

-        

-          If you do install to /usr/local, the
-          install will use sysconfdir=$prefix/etc/privoxy by default. All other
-          destinations, and the direct usage of --sysconfdir flag behave like normal, i.e. will not
-          add the extra privoxy directory. This is
-          for a safer install, as there may already exist another program
-          that uses a file with the "config" name,
-          and thus makes /usr/local/etc cleaner.
-        

-        

-          If installing to /usr/local, the
-          documentation will go by default to $prefix/share/doc. But if this directory doesn't
-          exist, it will then try $prefix/doc and
-          install there before creating a new $prefix/share/doc just for Privoxy.
-        

-        

-          Again, if the installs goes to /usr/local, the localstatedir (ie: var/)
-          will default to /var instead of $prefix/var so the logs will go to /var/log/privoxy/, and the pid file will be created
-          in /var/run/privoxy.pid.
-        

-        

-          make install will attempt to set the correct
-          values in config (main configuration
-          file). You should check this to make sure all values are correct.
-          If appropriate, an init script will be installed, but it is up to
-          the user to determine how and where to start Privoxy. The init script should be checked for
-          correct paths and values, if anything other than a default install
-          is done.
-        

-        

-          If install finds previous versions of local configuration files,
-          most of these will not be overwritten, and the new ones will be
-          installed with a "new" extension.
-          default.action and default.filter will be overwritten. You will then need to
-          manually update the other installed configuration files as needed.
-          The default template files will be overwritten. If you have customized,
-          local templates, these should be stored safely in a separate
-          directory and defined in config by the
-          "templdir" directive. It is of course
-          wise to always back-up any important configuration files "just in case". If a previous version of Privoxy is already running, you will
-          have to restart it manually.
-        

-        

-          For more detailed instructions on how to build Redhat RPMs, Windows
-          self-extracting installers, building on platforms with special
-          requirements etc, please consult the developer manual.
-        

-      
-      

-        

-          2.3. Keeping your Installation
-          Up-to-Date
-        

-        

-          If you wish to receive an email notification whenever we release
-          updates of Privoxy or the actions
-          file, subscribe to our announce mailing list,
-          privoxy-announce@lists.privoxy.org.
-        

-        

-          In order not to lose your personal changes and adjustments when
-          updating to the latest default.action file
-          we strongly
-          recommend that you use user.action and user.filter
-          for your local customizations of Privoxy. See the Chapter on actions files for details.
-        

-      

-    
-    

-      

-      
-        
-          
-          
-          
+      

-            Prev
-          
-            Home
-          
-            Next
           
         

+
+      
Note that all of these options can also be disabled through the
+      configuration file.

+
+      
WARNING: If
+      installing as root, the install will fail unless a non-root user or
+      group is specified, or a privoxy user and
+      group already exist on the system. If a non-root user is specified, and
+      no group, then the installation will try to also use a group of the
+      same name as "user". If a group is specified
+      (and no user), then the support files will be installed as writable by
+      that group, and owned by the user running the installation.

+
+      
configure accepts --with-user and --with-group
+      options for setting user and group ownership of the configuration files
+      (which need to be writable by the daemon). The specified user must already exist. When
+      starting Privoxy, it must be run as
+      this same user to insure write access to configuration and log
+      files!

+
+      
Alternately, you can specify user and
+      group on the make
+      command line, but be sure both already exist:

+
+      
-          
-          
-          

         

-            Introduction
-          
-             
-          
-            What's New in this Release
+          
+            
+ make -s install  USER=privoxy GROUP=privoxy
+

           		
         

       

+
+      
The default installation path for make
+      install is /usr/local. This may of course
+      be customized with the various ./configure path
+      options. If you are doing an install to anywhere besides /usr/local, be sure to set the appropriate paths with
+      the correct configure options (./configure
+      --help). Non-privileged users must of course have write access
+      permissions to wherever the target installation is going.

+
+      
If you do install to /usr/local, the
+      install will use sysconfdir=$prefix/etc/privoxy by default. All other
+      destinations, and the direct usage of --sysconfdir flag behave like normal, i.e. will not add
+      the extra privoxy directory. This is for a
+      safer install, as there may already exist another program that uses a
+      file with the "config" name, and thus makes
+      /usr/local/etc cleaner.

+
+      
If installing to /usr/local, the
+      documentation will go by default to $prefix/share/doc. But if this directory doesn't exist,
+      it will then try $prefix/doc and install
+      there before creating a new $prefix/share/doc
+      just for Privoxy.

+
+      
Again, if the installs goes to /usr/local,
+      the localstatedir (ie: var/) will default to /var
+      instead of $prefix/var so the logs will go to
+      /var/log/privoxy/, and the pid file will be
+      created in /var/run/privoxy.pid.

+
+      
make install will attempt to set the correct
+      values in config (main configuration file).
+      You should check this to make sure all values are correct. If
+      appropriate, an init script will be installed, but it is up to the user
+      to determine how and where to start Privoxy. The init script should be checked for
+      correct paths and values, if anything other than a default install is
+      done.

+
+      
If install finds previous versions of local configuration files,
+      most of these will not be overwritten, and the new ones will be
+      installed with a "new" extension.
+      default.action and default.filter will be overwritten. You will then need to
+      manually update the other installed configuration files as needed. The
+      default template files will be overwritten. If you have customized,
+      local templates, these should be stored safely in a separate directory
+      and defined in config by the "templdir" directive. It is of course wise to always
+      back-up any important configuration files "just in
+      case". If a previous version of Privoxy is already running, you will have to
+      restart it manually.

+
+      
For more detailed instructions on how to build Redhat RPMs, Windows
+      self-extracting installers, building on platforms with special
+      requirements etc, please consult the developer manual.

     

-  
-
 
+    

+      
2.3. Keeping your Installation
+      Up-to-Date

+
+      
If you wish to receive an email notification whenever we release
+      updates of Privoxy or the actions
+      file, subscribe to our announce mailing list,
+      privoxy-announce@lists.privoxy.org.

+
+      
In order not to lose your personal changes and adjustments when
+      updating to the latest default.action file we
+      strongly
+      recommend that you use user.action
+      and user.filter for your local customizations
+      of Privoxy. See the Chapter on actions files for details.

+    

+  
+
+  

+    

+
+    
+      
+        
+
+        
+
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
PrevHomeNext
Introduction What's New in this
+        Release

+  

+
+
diff --git a/doc/webserver/user-manual/introduction.html b/doc/webserver/user-manual/introduction.html
index 2ca127b6..4b08a243 100644
--- a/doc/webserver/user-manual/introduction.html
+++ b/doc/webserver/user-manual/introduction.html
@@ -1,205 +1,170 @@
-
+
+
 
-  
-    
-      Introduction
-    
-    
-    
-    
-    
-    
-    
-    
-  
-  
-    

-      
-        
-          
-        
-        
-          
-          
-          
-        
-      

-            Privoxy 3.0.26 User Manual
-          

-            Prev
-          
-          
-            Next
-          

-      

-    

-    

-      

-        1. Introduction
-      

-      

-        This documentation is included with the current UNRELEASED version of
-        Privoxy, 3.0.26, and is mostly
-        complete at this point. The most up to date reference for the time
-        being is still the comments in the source files and in the individual
-        configuration files. Development of a new version is currently
-        nearing completion, and includes significant changes and enhancements
-        over earlier versions.
-      

-      

-        Since this is a UNRELEASED version, not all new features are well
-        tested. This documentation may be slightly out of sync as a result
-        (especially with CVS sources). And there may be bugs, though hopefully not many!
-      

-      

-        

-          1.1. Features
-        

-        

-          In addition to the core features of ad blocking and cookie management, Privoxy provides many supplemental features,
-          some of them currently under development, that give the end-user
-          more control, more privacy and more freedom:
-        

-        

-        

-        
    
-          
  • 
-            
    
-              Supports "Connection: keep-alive". Outgoing connections can be
-              kept alive independently from the client.
-            
    
-          
    • 
-          
  • 
-            
    
-              Supports IPv6, provided the operating system does so too, and
-              the configure script detects it.
-            
    
-          
    • 
-          
  • 
-            
    
-              Supports tagging which allows to change the behaviour based on
-              client and server headers.
-            
    
-          
    • 
-          
  • 
-            
    
-              Can be run as an "intercepting" proxy, which obviates the need
-              to configure browsers individually.
-            
    
-          
    • 
-          
  • 
-            
    
-              Sophisticated actions and filters for manipulating both server
-              and client headers.
-            
    
-          
    • 
-          
  • 
-            
    
-              Can be chained with other proxies.
-            
    
-          
    • 
-          
  • 
-            
    
-              Integrated browser-based configuration and control utility at
-              http://config.privoxy.org/ (shortcut: http://p.p/). Browser-based
-              tracing of rule and filter effects. Remote toggling.
-            
    
-          
    • 
-          
  • 
-            
    
-              Web page filtering (text replacements, removes banners based on
-              size, invisible "web-bugs" and HTML
-              annoyances, etc.)
-            
    
-          
    • 
-          
  • 
-            
    
-              Modularized configuration that allows for standard settings and
-              user settings to reside in separate files, so that installing
-              updated actions files won't overwrite individual user settings.
-            
    
-          
    • 
-          
  • 
-            
    
-              Support for Perl Compatible Regular Expressions in the
-              configuration files, and a more sophisticated and flexible
-              configuration syntax.
-            
    
-          
    • 
-          
  • 
-            
    
-              GIF de-animation.
-            
    
-          
    • 
-          
  • 
-            
    
-              Bypass many click-tracking scripts (avoids script redirection).
-            
    
-          
    • 
-          
  • 
-            
    
-              User-customizable HTML templates for most proxy-generated pages
-              (e.g. "blocked" page).
-            
    
-          
    • 
-          
  • 
-            
    
-              Auto-detection and re-reading of config file changes.
-            
    
-          
    • 
-          
  • 
-            
    
-              Most features are controllable on a per-site or per-location
-              basis.
-            
    
-          
    • 
-          
  • 
-            
    
-              Many smaller new features added, limitations and bugs removed.
-            
    
-          
    • 
-        

-      

-    

-    

-      

-      
-        
-          
-          
-          
-        
-        
-          
-          
-          
-        
-      

-            Prev
-          
-            Home
-          
-            Next
-          

-            Privoxy 3.0.26 User Manual
-          
-             
-          
-            Installation
-          

+
+  Introduction
+  
+  
+  
+  
+  
+  
+  
+
+
+
+  

+    
+      
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
Privoxy 3.0.26 User Manual
PrevNext

+    

+  

+
+  

+    
1.
+    Introduction

+
+    
This documentation is included with the current stable version of
+    Privoxy, 3.0.26.

+
+    

+      
1.1.
+      Features

+
+      
In addition to the core features of ad blocking and cookie
+      management, Privoxy provides many
+      supplemental features, that give the end-user more control, more
+      privacy and more freedom:

+
+      
    
+        
  • 
+          
    Supports "Connection: keep-alive". Outgoing connections can be
+          kept alive independently from the client.
    
+        
    • 
+
+        
  • 
+          
    Supports IPv6, provided the operating system does so too, and
+          the configure script detects it.
    
+        
    • 
+
+        
  • 
+          
    Supports tagging which allows to change the behaviour based on
+          client and server headers.
    
+        
    • 
+
+        
  • 
+          
    Can be run as an "intercepting" proxy, which obviates the need
+          to configure browsers individually.
    
+        
    • 
+
+        
  • 
+          
    Sophisticated actions and filters for manipulating both server
+          and client headers.
    
+        
    • 
+
+        
  • 
+          
    Can be chained with other proxies.
    
+        
    • 
+
+        
  • 
+          
    Integrated browser-based configuration and control utility at
+          http://config.privoxy.org/ (shortcut: http://p.p/). Browser-based tracing
+          of rule and filter effects. Remote toggling.
    
+        
    • 
+
+        
  • 
+          
    Web page filtering (text replacements, removes banners based on
+          size, invisible "web-bugs" and HTML
+          annoyances, etc.)
    
+        
    • 
+
+        
  • 
+          
    Modularized configuration that allows for standard settings and
+          user settings to reside in separate files, so that installing
+          updated actions files won't overwrite individual user settings.
    
+        
    • 
+
+        
  • 
+          
    Support for Perl Compatible Regular Expressions in the
+          configuration files, and a more sophisticated and flexible
+          configuration syntax.
    
+        
    • 
+
+        
  • 
+          
    GIF de-animation.
    
+        
    • 
+
+        
  • 
+          
    Bypass many click-tracking scripts (avoids script
+          redirection).
    
+        
    • 
+
+        
  • 
+          
    User-customizable HTML templates for most proxy-generated pages
+          (e.g. "blocked" page).
    
+        
    • 
+
+        
  • 
+          
    Auto-detection and re-reading of config file changes.
    
+        
    • 
+
+        
  • 
+          
    Most features are controllable on a per-site or per-location
+          basis.
    
+        
    • 
+
+        
  • 
+          
    Many smaller new features added, limitations and bugs
+          removed.
    
+        
    • 
+      

     

-  
-
+  

+
+  

+    

+
+    
+      
+        
+
+        
 
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
PrevHomeNext
Privoxy 3.0.26 User
+        Manual Installation

+  

+
+
diff --git a/doc/webserver/user-manual/quickstart.html b/doc/webserver/user-manual/quickstart.html
index af0a5911..d0dc195f 100644
--- a/doc/webserver/user-manual/quickstart.html
+++ b/doc/webserver/user-manual/quickstart.html
@@ -1,505 +1,437 @@
-
+
+
 
-  
-    
-      Quickstart to Using Privoxy
-    
-    
-    
-    
-    
-    
-    
-    
-  
-  
-    

-      
-        
-          
-        
-        
-          
-          
-          
-        
-      

-            Privoxy 3.0.26 User Manual
-          

-            Prev
-          
-          
-            Next
-          

-      

-    

-    

-      

-        4. Quickstart to Using Privoxy
-      

-      

-      

+
+  Quickstart to Using Privoxy
+  
+  
+  
+  
+  
+  
+  
+
+
+
+  

+    
+      
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
Privoxy 3.0.26 User Manual
PrevNext

+    

+  

+
+  

+    
4. Quickstart to
+    Using Privoxy

+
+    
    
+      
  • 
+        
    Install Privoxy. See the Installation Section below for platform
+        specific information.
    
+      
    • 
+
+      
  • 
+        
    Advanced users and those who want to offer Privoxy service to more than just their local
+        machine should check the main config file,
+        especially the security-relevant options. These are
+        off by default.
    
+      
    • 
+
+      
  • 
+        
    Start Privoxy, if the
+        installation program has not done this already (may vary according to
+        platform). See the section Starting
+        Privoxy.
    
+      
    • 
+
+      
  • 
+        
    Set your browser to use Privoxy
+        as HTTP and HTTPS (SSL) proxy
+        by setting the proxy configuration for address of 127.0.0.1 and port 8118.
+        DO NOT activate
+        proxying for FTP or any protocols besides
+        HTTP and HTTPS (SSL) unless you intend to prevent your browser from
+        using these protocols.
    
+      
    • 
+
+      
  • 
+        
    Flush your browser's disk and memory caches, to remove any cached
+        ad images. If using Privoxy to
+        manage cookies, you should remove any currently stored cookies
+        too.
    
+      
    • 
+
+      
  • 
+        
    A default installation should provide a reasonable starting point
+        for most. There will undoubtedly be occasions where you will want to
+        adjust the configuration, but that can be dealt with as the need
+        arises. Little to no initial configuration is required in most cases,
+        you may want to enable the web-based action editor though. Be sure to read the
+        warnings first.
    
+
+        
    See the Configuration section for
+        more configuration options, and how to customize your installation.
+        You might also want to look at the next section for a quick
+        introduction to how Privoxy blocks
+        ads and banners.
    
+      
    • 
+
+      
  • 
+        
    If you experience ads that slip through, innocent images that are
+        blocked, or otherwise feel the need to fine-tune Privoxy's behavior, take a look at the actions files. As a quick start, you might
+        find the richly commented
+        examples helpful. You can also view and edit the actions files
+        through the web-based user interface. The Appendix "Troubleshooting: Anatomy
+        of an Action" has hints on how to understand and debug
+        actions that "misbehave".
    
+      
    • 
+
+      
  • 
+        
    Please see the section Contacting the
+        Developers on how to report bugs, problems with websites or to
+        get help.
    
+      
    • 
+
+      
  • 
+        
    Now enjoy surfing with enhanced control, comfort and privacy!
    
+      
    • 
+    

+
+    

+      
4.1. Quickstart to Ad Blocking

+
+      
Ad blocking is but one of Privoxy's
+      array of features. Many of these features are for the technically
+      minded advanced user. But, ad and banner blocking is surely common
+      ground for everybody.

+
+      
This section will provide a quick summary of ad blocking so you can
+      get up to speed quickly without having to read the more extensive
+      information provided below, though this is highly recommended.

+
+      
First a bit of a warning ... blocking ads is much like blocking
+      SPAM: the more aggressive you are about it, the more likely you are to
+      block things that were not intended. And the more likely that some
+      things may not work as intended. So there is a trade off here. If you
+      want extreme ad free browsing, be prepared to deal with more
+      "problem" sites, and to spend more time
+      adjusting the configuration to solve these unintended consequences. In
+      short, there is not an easy way to eliminate all ads. Either take the easy
+      way and settle for most ads blocked with the default configuration,
+      or jump in and tweak it for your personal surfing habits and
+      preferences.

+
+      
Secondly, a brief explanation of Privoxy's "actions".
+      "Actions" in this context, are the
+      directives we use to tell Privoxy to
+      perform some task relating to HTTP transactions (i.e. web browsing). We
+      tell Privoxy to take some "action". Each action has a unique name and function.
+      While there are many potential actions
+      in Privoxy's arsenal, only a few are
+      used for ad blocking. Actions,
+      and action configuration files, are
+      explained in depth below.

+
+      
Actions are specified in Privoxy's
+      configuration, followed by one or more URLs to which the action should
+      apply. URLs can actually be URL type patterns that use wildcards so they
+      can apply potentially to a range of similar URLs. The actions, together
+      with the URL patterns are called a section.

+
+      
When you connect to a website, the full URL will either match one or
+      more of the sections as defined in Privoxy's configuration, or not. If so, then
+      Privoxy will perform the respective
+      actions. If not, then nothing special happens. Furthermore, web pages
+      may contain embedded, secondary URLs that your web browser will use to
+      load additional components of the page, as it parses the original
+      page's HTML content. An ad image for instance, is just an URL embedded
+      in the page somewhere. The image itself may be on the same server, or a
+      server somewhere else on the Internet. Complex web pages will have many
+      such embedded URLs. Privoxy can deal
+      with each URL individually, so, for instance, the main page text is not
+      touched, but images from such-and-such server are blocked.

+
+      
The most important actions for basic ad blocking are: block, handle-as-image,
+      handle-as-empty-document,and
+      set-image-blocker:

+
       
    
         
  • 
-          
    
-            Install Privoxy. See the Installation Section below for
-            platform specific information.
-          
    
+          
    block - this is perhaps the
+          single most used action, and is particularly important for ad
+          blocking. This action stops any contact between your browser and
+          any URL patterns that match this action's configuration. It can be
+          used for blocking ads, but also anything that is determined to be
+          unwanted. By itself, it simply stops any communication with the
+          remote server and sends Privoxy's
+          own built-in BLOCKED page instead to let you now what has happened
+          (with some exceptions, see below).
    
+        
    • 
+
+        
  • 
+          
    handle-as-image -
+          tells Privoxy to treat this URL as
+          an image. Privoxy's default
+          configuration already does this for all common image types (e.g.
+          GIF), but there are many situations where this is not so easy to
+          determine. So we'll force it in these cases. This is particularly
+          important for ad blocking, since only if we know that it's an image
+          of some kind, can we replace it with an image of our choosing,
+          instead of the Privoxy BLOCKED
+          page (which would only result in a "broken
+          image" icon). There are some limitations to this though. For
+          instance, you can't just brute-force an image substitution for an
+          entire HTML page in most situations.
    
         
    • 
+
         
  • 
-          
    
-            Advanced users and those who want to offer Privoxy service to more than just their
-            local machine should check the main config
-            file, especially the security-relevant options. These
-            are off by default.
-          
    
+          
    handle-as-empty-document
+          - sends an empty document instead of Privoxy's normal BLOCKED HTML page. This is
+          useful for file types that are neither HTML nor images, such as
+          blocking JavaScript files.
    
         
    • 
+
         
  • 
-          
    
-            Start Privoxy, if the
-            installation program has not done this already (may vary
-            according to platform). See the section Starting Privoxy.
-          
    
+          
    set-image-blocker -
+          tells Privoxy what to display in
+          place of an ad image that has hit a block rule. For this to come
+          into play, the URL must match a block action somewhere in the
+          configuration, and, it must also match an handle-as-image
+          action.
    
+
+          
    The configuration options on what to display instead of the ad
+          are:
    
+
+          
+            
+              
+                
+              
+            
+          
       pattern - a checkerboard pattern, so
+                that an ad replacement is obvious. This is the default.
    
+
+          
+            
+              
+                
+              
+            
+          
       blank - A very small empty GIF image is
+                displayed. This is the so-called "invisible" configuration option.
    
+
+          
+            
+              
+                
+              
+            
+          
       http://<URL> - A redirect to any
+                image anywhere of the user's choosing (advanced usage).
    
         
    • 
+      

+
+      
Advanced users will eventually want to explore Privoxy filters as well. Filters are very
+      different from blocks. A "block" blocks a site, page, or unwanted contented.
+      Filters are a way of filtering or modifying what is actually on the
+      page. An example filter usage: a text replacement of "no-no" for "nasty-word".
+      That is a very simple example. This process can be used for ad
+      blocking, but it is more in the realm of advanced usage and has some
+      pitfalls to be wary off.

+
+      
The quickest way to adjust any of these settings is with your
+      browser through the special Privoxy
+      editor at http://config.privoxy.org/show-status (shortcut: http://p.p/show-status). This is an
+      internal page, and does not require Internet access.

+
+      
Note that as of Privoxy 3.0.7 beta
+      the action editor is disabled by default. Check the enable-edit-actions
+      section in the configuration file to learn why and in which cases
+      it's safe to enable again.

+
+      
If you decided to enable the action editor, select the appropriate
+      "actions" file, and click "Edit". It is best to put
+      personal or local preferences in user.action
+      since this is not meant to be overwritten during upgrades, and will
+      over-ride the settings in other files. Here you can insert new
+      "actions", and URLs for ad blocking or other
+      purposes, and make other adjustments to the configuration. Privoxy will detect these changes
+      automatically.

+
+      
A quick and simple step by step example:

+
+      
    
         
  • 
-          
    
-            Set your browser to use Privoxy
-            as HTTP and HTTPS (SSL) proxy by setting the proxy configuration for address
-            of 127.0.0.1 and port 8118. DO NOT activate proxying for FTP or any protocols besides HTTP and HTTPS (SSL)
-            unless you intend to prevent your browser from using these
-            protocols.
-          
    
+          
    Right click on the ad image to be blocked, then select
+          "Copy Link
+          Location" from the pop-up menu.
    
         
    • 
+
         
  • 
-          
    
-            Flush your browser's disk and memory caches, to remove any cached
-            ad images. If using Privoxy to
-            manage cookies, you should remove any currently stored
-            cookies too.
-          
    
+          
    Set your browser to http://config.privoxy.org/show-status
    
         
    • 
+
         
  • 
-          
    
-            A default installation should provide a reasonable starting point
-            for most. There will undoubtedly be occasions where you will want
-            to adjust the configuration, but that can be dealt with as the
-            need arises. Little to no initial configuration is required in
-            most cases, you may want to enable the web-based action
-            editor though. Be sure to read the warnings first.
-          
    
-          
    
-            See the Configuration section
-            for more configuration options, and how to customize your
-            installation. You might also want to look at the next section for a
-            quick introduction to how Privoxy blocks ads and banners.
-          
    
+          
    Find user.action in the top section,
+          and click on "Edit":
    
+
+          
    
+            
+
+            
    Figure 1. Actions Files in Use
    
+
+            
    
+              
    
+            
    
+          
    
         
    • 
+
         
  • 
-          
    
-            If you experience ads that slip through, innocent images that are
-            blocked, or otherwise feel the need to fine-tune Privoxy's behavior, take a look at the actions files. As a quick start, you
-            might find the richly
-            commented examples helpful. You can also view and edit the
-            actions files through the web-based user interface. The Appendix "Troubleshooting: Anatomy of an
-            Action" has hints on how to understand and debug
-            actions that "misbehave".
-          
    
+          
    You should have a section with only block listed under "Actions:". If not, click a "Insert new section
+          below" button, and in the new section that just
+          appeared, click the Edit button
+          right under the word "Actions:". This
+          will bring up a list of all actions. Find block near the
+          top, and click in the "Enabled" column,
+          then "Submit" just below the list.
    
         
    • 
+
         
  • 
-          
    
-            Please see the section Contacting the
-            Developers on how to report bugs, problems with websites or
-            to get help.
-          
    
+          
    Now, in the block actions section, click the
+          "Add"
+          button, and paste the URL the browser got from "Copy Link
+          Location". Remove the http:// at the beginning of the URL. Then, click
+          "Submit"
+          (or "OK"
+          if in a pop-up window).
    
         
    • 
+
         
  • 
-          
    
-            Now enjoy surfing with enhanced control, comfort and privacy!
-          
    
+          
    Now go back to the original page, and press SHIFT-Reload (or flush all browser caches). The image
+          should be gone now.
    
         
    • 
       

 
-      

-        

-          4.1. Quickstart to Ad Blocking
-        

-        

-          Ad blocking is but one of Privoxy's array of features. Many of these
-          features are for the technically minded advanced user. But, ad and
-          banner blocking is surely common ground for everybody.
-        

-        

-          This section will provide a quick summary of ad blocking so you can
-          get up to speed quickly without having to read the more extensive
-          information provided below, though this is highly recommended.
-        

-        

-          First a bit of a warning ... blocking ads is much like blocking
-          SPAM: the more aggressive you are about it, the more likely you are
-          to block things that were not intended. And the more likely that
-          some things may not work as intended. So there is a trade off here.
-          If you want extreme ad free browsing, be prepared to deal with more
-          "problem" sites, and to spend more time
-          adjusting the configuration to solve these unintended consequences.
-          In short, there is not an easy way to eliminate all ads. Either take the
-          easy way and settle for most ads blocked with the default
-          configuration, or jump in and tweak it for your personal surfing
-          habits and preferences.
-        

-        

-          Secondly, a brief explanation of Privoxy's "actions". "Actions" in
-          this context, are the directives we use to tell Privoxy to perform some task relating to HTTP
-          transactions (i.e. web browsing). We tell Privoxy to take some "action". Each action has a unique name and
-          function. While there are many potential actions in Privoxy's arsenal, only a few are used for ad
-          blocking. Actions, and action configuration files, are
-          explained in depth below.
-        

-        

-          Actions are specified in Privoxy's
-          configuration, followed by one or more URLs to which the action
-          should apply. URLs can actually be URL type patterns that use wildcards so
-          they can apply potentially to a range of similar URLs. The actions,
-          together with the URL patterns are called a section.
-        

-        

-          When you connect to a website, the full URL will either match one
-          or more of the sections as defined in Privoxy's configuration, or not. If so, then
-          Privoxy will perform the
-          respective actions. If not, then nothing special happens.
-          Furthermore, web pages may contain embedded, secondary URLs that
-          your web browser will use to load additional components of the
-          page, as it parses the original page's HTML content. An ad image
-          for instance, is just an URL embedded in the page somewhere. The
-          image itself may be on the same server, or a server somewhere else
-          on the Internet. Complex web pages will have many such embedded
-          URLs. Privoxy can deal with each
-          URL individually, so, for instance, the main page text is not
-          touched, but images from such-and-such server are blocked.
-        

-        

-          The most important actions for basic ad blocking are: block, handle-as-image, handle-as-empty-document,and
-          set-image-blocker:
-        

-        

-        

-        
    
-          
  • 
-            
    
-              block - this is perhaps the
-              single most used action, and is particularly important for ad
-              blocking. This action stops any contact between your browser
-              and any URL patterns that match this action's configuration. It
-              can be used for blocking ads, but also anything that is
-              determined to be unwanted. By itself, it simply stops any
-              communication with the remote server and sends Privoxy's own built-in BLOCKED page
-              instead to let you now what has happened (with some exceptions,
-              see below).
-            
    
-          
    • 
-          
  • 
-            
    
-              handle-as-image -
-              tells Privoxy to treat this
-              URL as an image. Privoxy's
-              default configuration already does this for all common image
-              types (e.g. GIF), but there are many situations where this is
-              not so easy to determine. So we'll force it in these cases.
-              This is particularly important for ad blocking, since only if
-              we know that it's an image of some kind, can we replace it with
-              an image of our choosing, instead of the Privoxy BLOCKED page (which would only
-              result in a "broken image" icon).
-              There are some limitations to this though. For instance, you
-              can't just brute-force an image substitution for an entire HTML
-              page in most situations.
-            
    
-          
    • 
-          
  • 
-            
    
-              handle-as-empty-document
-              - sends an empty document instead of Privoxy's normal BLOCKED HTML page. This
-              is useful for file types that are neither HTML nor images, such
-              as blocking JavaScript files.
-            
    
-          
    • 
-          
  • 
-            
    
-              set-image-blocker
-              - tells Privoxy what to
-              display in place of an ad image that has hit a block rule. For
-              this to come into play, the URL must match a block
-              action somewhere in the configuration, and, it must also
-              match an handle-as-image
-              action.
-            
    
-            
    
-              The configuration options on what to display instead of the ad
-              are:
-            
    
-            
-              
-                
-                  
-                
-              
-            
    
-                       pattern - a checkerboard pattern,
-                    so that an ad replacement is obvious. This is the
-                    default.
-                  
    
-            
-              
-                
-                  
-                
-              
-            
    
-                       blank - A very small empty GIF
-                    image is displayed. This is the so-called "invisible" configuration option.
-                  
    
-            
-              
-                
-                  
-                
-              
-            
    
-                       http://<URL> - A redirect to
-                    any image anywhere of the user's choosing (advanced
-                    usage).
-                  
    
-          
    • 
-        

-
-        

-          Advanced users will eventually want to explore Privoxy filters as well. Filters are
-          very different from blocks. A "block" blocks a site, page, or unwanted contented.
-          Filters are a way of filtering or modifying what is actually on the
-          page. An example filter usage: a text replacement of "no-no" for "nasty-word".
-          That is a very simple example. This process can be used for ad
-          blocking, but it is more in the realm of advanced usage and has
-          some pitfalls to be wary off.
-        

-        

-          The quickest way to adjust any of these settings is with your
-          browser through the special Privoxy editor at http://config.privoxy.org/show-status (shortcut: http://p.p/show-status). This
-          is an internal page, and does not require Internet access.
-        

-        

-          Note that as of Privoxy 3.0.7 beta
-          the action editor is disabled by default. Check the enable-edit-actions
-          section in the configuration file to learn why and in which
-          cases it's safe to enable again.
-        

-        

-          If you decided to enable the action editor, select the appropriate
-          "actions" file, and click "Edit". It is best to
-          put personal or local preferences in user.action since this is not meant to be
-          overwritten during upgrades, and will over-ride the settings in
-          other files. Here you can insert new "actions", and URLs for ad blocking or other
-          purposes, and make other adjustments to the configuration. Privoxy will detect these changes
-          automatically.
-        

-        

-          A quick and simple step by step example:
-        

-        

-        

-        
    
-          
  • 
-            
    
-              Right click on the ad image to be blocked, then select "Copy Link
-              Location" from the pop-up menu.
-            
    
-          
    • 
-          
  • 
-            
    
-              Set your browser to http://config.privoxy.org/show-status
-            
    
-          
    • 
-          
  • 
-            
    
-              Find user.action in the top section,
-              and click on "Edit":
-            
    
-            
    
-            
    
-            
    
-              
-              
    
-                Figure 1. Actions Files in Use
-              
    
-              
    
-                
    
-                  
-                
    
-              
    
-            
    
-          
    • 
-          
  • 
-            
    
-              You should have a section with only block listed under
-              "Actions:". If not, click a "Insert new section
-              below" button, and in the new section that just
-              appeared, click the Edit button
-              right under the word "Actions:".
-              This will bring up a list of all actions. Find block near
-              the top, and click in the "Enabled"
-              column, then "Submit" just below the list.
-            
    
-          
    • 
-          
  • 
-            
    
-              Now, in the block actions section, click
-              the "Add" button, and paste the URL the
-              browser got from "Copy Link Location". Remove the http:// at the beginning of the URL. Then,
-              click "Submit" (or "OK" if in a
-              pop-up window).
-            
    
-          
    • 
-          
  • 
-            
    
-              Now go back to the original page, and press SHIFT-Reload (or flush all browser caches). The
-              image should be gone now.
-            
    
-          
    • 
-        

-
-        

-          This is a very crude and simple example. There might be good
-          reasons to use a wildcard pattern match to include potentially
-          similar images from the same site. For a more extensive explanation
-          of "patterns", and the entire actions
-          concept, see the Actions section.
-        

-        

-          For advanced users who want to hand edit their config files, you
-          might want to now go to the Actions Files Tutorial. The
-          ideas explained therein also apply to the web-based editor.
-        

-        

-          There are also various filters that can be used for ad
-          blocking (filters are a special subset of actions). These fall into
-          the "advanced" usage category, and are
-          explained in depth in later sections.
-        

-      

-    

-    

-      

-      
-        
-          
-          
-          
-        
-        
-          
-          
-          
-        
-      

-            Prev
-          
-            Home
-          
-            Next
-          

-            What's New in this Release
-          
-             
-          
-            Starting Privoxy
-          

+      
This is a very crude and simple example. There might be good reasons
+      to use a wildcard pattern match to include potentially similar images
+      from the same site. For a more extensive explanation of "patterns", and the entire actions concept, see the Actions section.

+
+      
For advanced users who want to hand edit their config files, you
+      might want to now go to the Actions Files Tutorial. The ideas
+      explained therein also apply to the web-based editor.

+
+      
There are also various filters that can be used for ad blocking
+      (filters are a special subset of actions). These fall into the
+      "advanced" usage category, and are explained
+      in depth in later sections.

     

-  
-
+  

+
+  

+    

+
+    
+      
+        
+
+        
 
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
PrevHomeNext
What's New in this
+        Release Starting Privoxy

+  

+
+
diff --git a/doc/webserver/user-manual/seealso.html b/doc/webserver/user-manual/seealso.html
index 31acaf55..e44cf03e 100644
--- a/doc/webserver/user-manual/seealso.html
+++ b/doc/webserver/user-manual/seealso.html
@@ -1,195 +1,177 @@
-
+
+
 
-  
-    
-      See Also
-    
-    
-    
-    
-    
-    
-    
-    
-  
-  
-    

-      
+
+  See Also
+  
+  
+  
+  
+  
+  
+  
+
+
+
+  

+    

+      
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
Privoxy 3.0.26 User Manual
PrevNext

+    

+  

+
+  

+    
13. See Also

+
+    
Other references and sites of interest to Privoxy users:

+
+    
+      
-          
+          
+      
+    

         

-            Privoxy 3.0.26 User Manual
-          https://www.privoxy.org/, the Privoxy Home page.
         

+
+    
+      
-          
-          
-          
+          
-      

         

-            Prev
-          
-          
-            Next
-          https://www.privoxy.org/faq/, the Privoxy FAQ.
         

-      

-    

-    

-      

-        13. See Also
-      

-      

-        Other references and sites of interest to Privoxy users:
-      

-      

-      

-      
-        
-          
-            
-          
-        
-      

-              https://www.privoxy.org/, the Privoxy Home page.
-            

-      
-        
-          
-            
-          
-        
-      

-              https://www.privoxy.org/faq/, the Privoxy FAQ.
-            

-      
-        
-          
-            
-          
-        
-      

-              https://www.privoxy.org/developer-manual/, the Privoxy developer manual.
-            

-      
-        
-          
-            
-          
-        
-      

-              https://sourceforge.net/projects/ijbswa/, the
-              Project Page for Privoxy on SourceForge.
-            

-      
-        
-          
-            
-          
-        
-      

-              http://config.privoxy.org/, the web-based user
-              interface. Privoxy must be
-              running for this to work. Shortcut: http://p.p/
-            

-      
-        
-          
-            
-          
-        
-      

-              https://sourceforge.net/tracker/?group_id=11118&atid=460288,
-              to submit "misses" and other
-              configuration related suggestions to the developers.
-            

-      
-        
-          
-            
-          
-        
-      

-              http://www.squid-cache.org/, a popular caching
-              proxy, which is often used together with Privoxy.
-            

-      
-        
-          
-            
-          
-        
-      

-              http://www.pps.univ-paris-diderot.fr/~jch/software/polipo/,
-              Polipo is a caching proxy with
-              advanced features like pipelining, multiplexing and caching of
-              partial instances. In many setups it can be used as Squid replacement.
-            

-      
-        
-          
-            
-          
-        
-      

-              https://www.torproject.org/, Tor can help anonymize web browsing, web
-              publishing, instant messaging, IRC, SSH, and other
-              applications.
-            

-    

-    

-      

-      
+      
+    

+
+    
+      
-          
-          
-          
+          
+      
+    

         

-            Prev
-          
-            Home
-          
-            Next
-          https://www.privoxy.org/developer-manual/, the
+          Privoxy developer manual.
         

+
+    
+      
-          
-          
-          
+          
-      

         

-            Privoxy Copyright, License and History
-          
-             
-          
-            Appendix
-          https://sourceforge.net/projects/ijbswa/, the Project
+          Page for Privoxy on SourceForge.
         

-    

-  
-
+      

+
+    
+      
+        
+          
+        
+      
+    
http://config.privoxy.org/, the web-based user
+          interface. Privoxy must be running
+          for this to work. Shortcut: http://p.p/

+
+    
+      
+        
+          
+        
+      
+    
https://sourceforge.net/tracker/?group_id=11118&atid=460288,
+          to submit "misses" and other
+          configuration related suggestions to the developers.

 
+    
+      
+        
+          
+        
+      
+    
http://www.squid-cache.org/, a popular caching proxy,
+          which is often used together with Privoxy.

+
+    
+      
+        
+          
+        
+      
+    
http://www.pps.univ-paris-diderot.fr/~jch/software/polipo/,
+          Polipo is a caching proxy with
+          advanced features like pipelining, multiplexing and caching of
+          partial instances. In many setups it can be used as Squid replacement.

+
+    
+      
+        
+          
+        
+      
+    
https://www.torproject.org/, Tor can help anonymize web browsing, web
+          publishing, instant messaging, IRC, SSH, and other
+          applications.

+  

+
+  

+    

+
+    
+      
+        
+
+        
+
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
PrevHomeNext
Privoxy Copyright, License
+        and History Appendix

+  

+
+
diff --git a/doc/webserver/user-manual/startup.html b/doc/webserver/user-manual/startup.html
index cb09d2aa..61e0e2e4 100644
--- a/doc/webserver/user-manual/startup.html
+++ b/doc/webserver/user-manual/startup.html
@@ -1,484 +1,414 @@
-
+
+
 
-  
-    
-      Starting Privoxy
-    
-    
-    
-    
-    
-    
-    
-    
-  
-  
-    

-      
-        
-          
-        
+
+  Starting Privoxy
+  
+  
+  
+  
+  
+  
+  
+
+
+
+  

+    

-            Privoxy 3.0.26 User Manual
-          

+      
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
Privoxy 3.0.26 User Manual
PrevNext

+    

+  

+
+  

+    
5. Starting
+    Privoxy

+
+    
Before launching Privoxy for the
+    first time, you will want to configure your browser(s) to use
+    Privoxy as a HTTP and HTTPS (SSL)
+    proxy. The default is 127.0.0.1 (or localhost) for the proxy
+    address, and port 8118 (earlier versions used port 8000). This is the one
+    configuration step that must
+    be done!

+
+    
Please note that Privoxy can only
+    proxy HTTP and HTTPS traffic. It will not work with FTP or other
+    protocols.

+
+    

+      
+
+      
Figure 2. Proxy Configuration Showing Mozilla/Netscape HTTP and
+      HTTPS (SSL) Settings

+
+      

+        

+      

+    

+
+    
With Firefox, this is typically set
+    under:

+
+    
 Tools -> Options ->  Advanced -> Network ->Connection -> Settings

+
+    
Or optionally on some platforms:

+
+    
 Edit -> Preferences -> General -> Connection Settings -> Manual Proxy Configuration

+
+    
With Netscape (and Mozilla), this can be set under:

+
+    
 Edit -> Preferences -> Advanced -> Proxies -> HTTP
+    Proxy

+
+    
For Internet Explorer v.5-7:

+
+    
 Tools -> Internet
+    Options -> Connections -> LAN Settings

+
+    
Then, check "Use Proxy" and fill in the
+    appropriate info (Address: 127.0.0.1, Port: 8118). Include HTTPS (SSL),
+    if you want HTTPS proxy support too (sometimes labeled "Secure"). Make sure any checkboxes like "Use the same proxy server for all protocols" is
+    UNCHECKED. You want
+    only HTTP and HTTPS (SSL)!

+
+    

+      
+
+      
Figure 3. Proxy Configuration Showing Internet Explorer HTTP and
+      HTTPS (Secure) Settings

+
+      

+        

+      

+    

+
+    
After doing this, flush your browser's disk and memory caches to force
+    a re-reading of all pages and to get rid of any ads that may be cached.
+    Remove any cookies, if you want Privoxy
+    to manage that. You are now ready to start enjoying the benefits of using
+    Privoxy!

+
+    
Privoxy itself is typically started
+    by specifying the main configuration file to be used on the command line.
+    If no configuration file is specified on the command line, Privoxy will look for a file named config in the current directory. Except on Win32 where it
+    will try config.txt.

+
+    

+      
5.1.
+      Debian

+
+      
We use a script. Note that Debian typically starts Privoxy upon booting per default. It will use the
+      file /etc/privoxy/config as its main
+      configuration file.

+
+      
-          
-          
-          

         

-            Prev
-          
-          
-            Next
+          
+            
+ # /etc/init.d/privoxy start
+

           		
         

       

-      

     

-    

-      

-        5. Starting Privoxy
-      

-      

-        Before launching Privoxy for the
-        first time, you will want to configure your browser(s) to use Privoxy as a HTTP and HTTPS (SSL) proxy.
-        The default is 127.0.0.1 (or localhost) for the proxy address, and
-        port 8118 (earlier versions used port 8000). This is the one
-        configuration step that
-        must be done!
-      

-      

-        Please note that Privoxy can only
-        proxy HTTP and HTTPS traffic. It will not work with FTP or other
-        protocols.
-      

-      

-      

-      

-        
-        

-          Figure 2. Proxy Configuration Showing Mozilla/Netscape HTTP and
-          HTTPS (SSL) Settings
-        

-        

-          

-            
-          

-        

-      

 
-      

-        With Firefox, this is typically set
-        under:
-      

-      

-         Tools -> Options ->  Advanced -> Network ->Connection -> Settings

-         
-      

-      

-        Or optionally on some platforms:
-      

-      

-         Edit -> Preferences -> General -> Connection Settings -> Manual Proxy Configuration

-         
-      

-      

-        With Netscape (and Mozilla), this can be set under:
-      

-      

-         Edit -> Preferences -> Advanced -> Proxies -> HTTP Proxy

-         
-      

-      

-        For Internet Explorer v.5-7:
-      

-      

-         Tools -> Internet Options -> Connections -> LAN Settings
-      

-      

-        Then, check "Use Proxy" and fill in the
-        appropriate info (Address: 127.0.0.1, Port: 8118). Include HTTPS
-        (SSL), if you want HTTPS proxy support too (sometimes labeled "Secure"). Make sure any checkboxes like "Use the same proxy server for all protocols" is
-        UNCHECKED. You
-        want only HTTP and HTTPS (SSL)!
-      

-      

-      

-      

-        
-        

-          Figure 3. Proxy Configuration Showing Internet Explorer HTTP and
-          HTTPS (Secure) Settings
-        

-        

-          

-            
-          

-        

-      

+    

+      
5.2.
+      FreeBSD and ElectroBSD

 
-      

-        After doing this, flush your browser's disk and memory caches to
-        force a re-reading of all pages and to get rid of any ads that may be
-        cached. Remove any cookies, if you want Privoxy to manage that. You are now ready to
-        start enjoying the benefits of using Privoxy!
-      

-      

-        Privoxy itself is typically started
-        by specifying the main configuration file to be used on the command
-        line. If no configuration file is specified on the command line,
-        Privoxy will look for a file named
-        config in the current directory. Except on
-        Win32 where it will try config.txt.
-      

-      

-        

-          5.1. Debian
-        

-        

-          We use a script. Note that Debian typically starts Privoxy upon booting per default. It will use
-          the file /etc/privoxy/config as its main
-          configuration file.
-        

-        

-        

-        
-          
-            
-          
-        

-
- # /etc/init.d/privoxy start
-

-            

-      

-      

-        

-          5.2. FreeBSD and ElectroBSD
-        

-        

-          To start Privoxy upon booting, add
-          "privoxy_enable='YES'" to /etc/rc.conf.
-          Privoxy will use /usr/local/etc/privoxy/config as its main
-          configuration file.
-        

-        

-          If you installed Privoxy into a
-          jail, the paths above are relative to the jail root.
-        

-        

-          To start Privoxy manually, run:
-        

-        

-        

-        
-          
-            

-
+      
To start Privoxy upon booting, add
+      "privoxy_enable='YES'" to /etc/rc.conf.
+      Privoxy will use /usr/local/etc/privoxy/config as its main configuration
+      file.

+
+      
If you installed Privoxy into a
+      jail, the paths above are relative to the jail root.

+
+      
To start Privoxy manually, run:

+
+      
+        
+          
-          
-        

+            
  # service privoxy onestart
 

-            

-      
-      

-        

-          5.3. Windows
-        

-        

-          Click on the Privoxy Icon to start
-          Privoxy. If no configuration file
-          is specified on the command line, Privoxy will look for a file named config.txt. Note that Windows will automatically
-          start Privoxy when the system
-          starts if you chose that option when installing.
-        

-        

-          Privoxy can run with full Windows
-          service functionality. On Windows only, the Privoxy program has two new command line
-          arguments to install and uninstall Privoxy as a service. See the Windows Installation
-          instructions for details.
-        

-      

-      

-        

-          5.4. Generic instructions for Unix derivates
-          (Solaris, NetBSD, HP-UX etc.)
-        

-        

-          Example Unix startup command:
-        

-        

-        

-        
-          
-            
-          
-        

-
- # /usr/sbin/privoxy --user privoxy /etc/privoxy/config
-

-            

-
-        

-          Note that if you installed Privoxy
-          through a package manager, the package will probably contain a
-          platform-specific script or configuration file to start Privoxy upon boot.
-        

-      

-      

-        

-          5.5. OS/2
-        

-        

-          During installation, Privoxy is
-          configured to start automatically when the system restarts. You can
-          start it manually by double-clicking on the Privoxy icon in the Privoxy folder.
-        

-      

-      

-        

-          5.6. Mac OS X
-        

-        

-          The privoxy service will automatically start after a successful
-          installation (and thereafter every time your computer starts up)
-          however you will need to configure your web browser(s) to use it.
-          To do so, configure them to use a proxy for HTTP and HTTPS at the
-          address 127.0.0.1:8118.
-        

-        

-          To prevent the privoxy service from automatically starting when
-          your computer starts up, remove or rename the file /Library/LaunchDaemons/org.ijbswa.privoxy.plist (on
-          OS X 10.5 and higher) or the folder named /Library/StartupItems/Privoxy (on OS X 10.4
-          'Tiger').
-        

-        

-          To manually start or stop the privoxy service, use the scripts
-          startPrivoxy.sh and stopPrivoxy.sh supplied in
-          /Applications/Privoxy. They must be run from an administrator
-          account, using sudo.
-        

-      

-      

-        

-          5.7. Command Line Options
-        

-        

-          Privoxy may be invoked with the
-          following command-line options:
-        

-        

-        

-        
    
-          
  • 
-            
    
-              --config-test
-            
    
-            
    
-              Exit after loading the configuration files before binding to
-              the listen address. The exit code signals whether or not the
-              configuration files have been successfully loaded.
-            
    
-            
    
-              If the exit code is 1, at least one of the configuration files
-              is invalid, if it is 0, all the configuration files have been
-              successfully loaded (but may still contain errors that can
-              currently only be detected at run time).
-            
    
-            
    
-              This option doesn't affect the log setting, combination with
-              --no-daemon is recommended if a
-              configured log file shouldn't be used.
-            
    
-          
    • 
-          
  • 
-            
    
-              --version
-            
    
-            
    
-              Print version info and exit. Unix only.
-            
    
-          
    • 
-          
  • 
-            
    
-              --help
-            
    
-            
    
-              Print short usage info and exit. Unix only.
-            
    
-          
    • 
-          
  • 
-            
    
-              --no-daemon
-            
    
-            
    
-              Don't become a daemon, i.e. don't fork and become process group
-              leader, and don't detach from controlling tty. Unix only.
-            
    
-          
    • 
-          
  • 
-            
    
-              --pidfile
-              FILE
-            
    
-            
    
-              On startup, write the process ID to FILE. Delete the FILE on exit. Failure
-              to create or delete the FILE is non-fatal. If no FILE option is given,
-              no PID file will be used. Unix only.
-            
    
-          
    • 
-          
  • 
-            
    
-              --user
-              USER[.GROUP]
-            
    
-            
    
-              After (optionally) writing the PID file, assume the user ID of
-              USER, and
-              if included the GID of GROUP. Exit if the privileges are not
-              sufficient to do so. Unix only.
-            
    
-          
    • 
-          
  • 
-            
    
-              --chroot
-            
    
-            
    
-              Before changing to the user ID given in the --user option, chroot
-              to that user's home directory, i.e. make the kernel pretend to
-              the Privoxy process that the
-              directory tree starts there. If set up carefully, this can
-              limit the impact of possible vulnerabilities in Privoxy to the files contained in that
-              hierarchy. Unix only.
-            
    
-          
    • 
-          
  • 
-            
    
-              --pre-chroot-nslookup hostname
-            
    
-            
    
-              Specifies a hostname (for example www.privoxy.org) to look up
-              before doing a chroot. On some systems, initializing the
-              resolver library involves reading config files from /etc and/or
-              loading additional shared libraries from /lib. On these
-              systems, doing a hostname lookup before the chroot reduces the
-              number of files that must be copied into the chroot tree.
-            
    
-            
    
-              For fastest startup speed, a good value is a hostname that is
-              not in /etc/hosts but that your local name server (listed in
-              /etc/resolv.conf) can resolve without recursion (that is,
-              without having to ask any other name servers). The hostname
-              need not exist, but if it doesn't, an error message (which can
-              be ignored) will be output.
-            
    
-          
    • 
-          
  • 
-            
    
-              configfile
-            
    
-            
    
-              If no configfile is included on the command
-              line, Privoxy will look for a
-              file named "config" in the current
-              directory (except on Win32 where it will look for "config.txt" instead). Specify full path to
-              avoid confusion. If no config file is found, Privoxy will fail to start.
-            
    
-          
    • 
-        

-
-        

-          On MS Windows only there are two
-          additional command-line options to allow Privoxy to install and run as a service. See the Window Installation
-          section for details.
-        

-      

-    
-    

-      

-      
-        
-          
-          
-          
+      

-            Prev
-          
-            Home
-          
-            Next
           
         

+    

+
+    

+      
5.3.
+      Windows

+
+      
Click on the Privoxy Icon to start
+      Privoxy. If no configuration file is
+      specified on the command line, Privoxy
+      will look for a file named config.txt. Note
+      that Windows will automatically start Privoxy when the system starts if you chose that
+      option when installing.

+
+      
Privoxy can run with full Windows
+      service functionality. On Windows only, the Privoxy program has two new command line arguments
+      to install and uninstall Privoxy as a
+      service. See the Windows Installation
+      instructions for details.

+    

+
+    

+      
5.4. Generic
+      instructions for Unix derivates (Solaris, NetBSD, HP-UX etc.)

+
+      
Example Unix startup command:

+
+      
-          
-          
-          

         

-            Quickstart to Using Privoxy
-          
-             
-          
-            Privoxy Configuration
+          
+            
+ # /usr/sbin/privoxy --user privoxy /etc/privoxy/config
+

           		
         

       

+
+      
Note that if you installed Privoxy
+      through a package manager, the package will probably contain a
+      platform-specific script or configuration file to start Privoxy upon boot.

     

-  
-
 
+    

+      
5.5. OS/2

+
+      
During installation, Privoxy is
+      configured to start automatically when the system restarts. You can
+      start it manually by double-clicking on the Privoxy icon in the Privoxy folder.

+    

+
+    

+      
5.6. Mac OS
+      X

+
+      
The privoxy service will automatically start after a successful
+      installation (and thereafter every time your computer starts up)
+      however you will need to configure your web browser(s) to use it. To do
+      so, configure them to use a proxy for HTTP and HTTPS at the address
+      127.0.0.1:8118.

+
+      
To prevent the privoxy service from automatically starting when your
+      computer starts up, remove or rename the file /Library/LaunchDaemons/org.ijbswa.privoxy.plist (on OS X
+      10.5 and higher) or the folder named /Library/StartupItems/Privoxy (on OS X 10.4
+      'Tiger').

+
+      
To manually start or stop the privoxy service, use the scripts
+      startPrivoxy.sh and stopPrivoxy.sh supplied in /Applications/Privoxy.
+      They must be run from an administrator account, using sudo.

+    

+
+    

+      
5.7. Command
+      Line Options

+
+      
Privoxy may be invoked with the
+      following command-line options:

+
+      
    
+        
  • 
+          
    --config-test
    
+
+          
    Exit after loading the configuration files before binding to the
+          listen address. The exit code signals whether or not the
+          configuration files have been successfully loaded.
    
+
+          
    If the exit code is 1, at least one of the configuration files
+          is invalid, if it is 0, all the configuration files have been
+          successfully loaded (but may still contain errors that can
+          currently only be detected at run time).
    
+
+          
    This option doesn't affect the log setting, combination with
+          --no-daemon
+          is recommended if a configured log file shouldn't be used.
    
+        
    • 
+
+        
  • 
+          
    --version
    
+
+          
    Print version info and exit. Unix only.
    
+        
    • 
+
+        
  • 
+          
    --help
    
+
+          
    Print short usage info and exit. Unix only.
    
+        
    • 
+
+        
  • 
+          
    --no-daemon
    
+
+          
    Don't become a daemon, i.e. don't fork and become process group
+          leader, and don't detach from controlling tty. Unix only.
    
+        
    • 
+
+        
  • 
+          
    --pidfile
+          FILE
    
+
+          
    On startup, write the process ID to FILE. Delete the
+          FILE on exit.
+          Failure to create or delete the FILE is non-fatal. If no FILE option is given, no
+          PID file will be used. Unix only.
    
+        
    • 
+
+        
  • 
+          
    --user
+          USER[.GROUP]
    
+
+          
    After (optionally) writing the PID file, assume the user ID of
+          USER, and if
+          included the GID of GROUP. Exit if the privileges are not
+          sufficient to do so. Unix only.
    
+        
    • 
+
+        
  • 
+          
    --chroot
    
+
+          
    Before changing to the user ID given in the --user option, chroot to
+          that user's home directory, i.e. make the kernel pretend to the
+          Privoxy process that the directory
+          tree starts there. If set up carefully, this can limit the impact
+          of possible vulnerabilities in Privoxy to the files contained in that
+          hierarchy. Unix only.
    
+        
    • 
+
+        
  • 
+          
    --pre-chroot-nslookup
+          hostname
    
+
+          
    Specifies a hostname (for example www.privoxy.org) to look up
+          before doing a chroot. On some systems, initializing the resolver
+          library involves reading config files from /etc and/or loading
+          additional shared libraries from /lib. On these systems, doing a
+          hostname lookup before the chroot reduces the number of files that
+          must be copied into the chroot tree.
    
+
+          
    For fastest startup speed, a good value is a hostname that is
+          not in /etc/hosts but that your local name server (listed in
+          /etc/resolv.conf) can resolve without recursion (that is, without
+          having to ask any other name servers). The hostname need not exist,
+          but if it doesn't, an error message (which can be ignored) will be
+          output.
    
+        
    • 
+
+        
  • 
+          
    configfile
    
+
+          
    If no configfile is included on the command line,
+          Privoxy will look for a file named
+          "config" in the current directory
+          (except on Win32 where it will look for "config.txt" instead). Specify full path to avoid
+          confusion. If no config file is found, Privoxy will fail to start.
    
+        
    • 
+      

+
+      
On MS Windows only there are two
+      additional command-line options to allow Privoxy to install and run as a service. See the Window Installation
+      section for details.

+    

+  
+
+  

+    

+
+    
+      
+        
+
+        
+
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
PrevHomeNext
Quickstart to Using
+        Privoxy Privoxy Configuration

+  

+
+
diff --git a/doc/webserver/user-manual/templates.html b/doc/webserver/user-manual/templates.html
index 85de8bb4..b4d393fa 100644
--- a/doc/webserver/user-manual/templates.html
+++ b/doc/webserver/user-manual/templates.html
@@ -1,176 +1,158 @@
-
+
+
 
-  
-    
-      Privoxy's Template Files
-    
-    
-    
-    
-    
-    
-    
-    
-  
-  
-    

-      
-        
-          
-        
-        
-          
-          
-          
-        
-      

-            Privoxy 3.0.26 User Manual
-          

-            Prev
-          
-          
-            Next
-          

-      

-    

-    

-      

-        10. Privoxy's Template Files
-      

-      

-        All Privoxy built-in pages, i.e.
-        error pages such as the "404 - No Such Domain" error
-        page, the "BLOCKED" page and all pages of
-        its web-based user
-        interface, are generated from templates. (Privoxy must be running for the above links to
-        work as intended.)
-      

-      

-        These templates are stored in a subdirectory of the configuration directory called templates. On Unixish platforms, this is typically /etc/privoxy/templates/.
-      

-      

-        The templates are basically normal HTML files, but with place-holders
-        (called symbols or exports), which Privoxy fills at run time. It is possible to
-        edit the templates with a normal text editor, should you want to
-        customize them. (Not
-        recommended for the casual user). Should you create your
-        own custom templates, you should use the config setting templdir to specify an alternate location,
-        so your templates do not get overwritten during upgrades.
-      

-      

-        Note that just like in configuration files, lines starting with # are ignored when the templates are filled in.
-      

-      

-        The place-holders are of the form @name@,
-        and you will find a list of available symbols, which vary from
-        template to template, in the comments at the start of each file. Note
-        that these comments are not always accurate, and that it's probably
-        best to look at the existing HTML code to find out which symbols are
-        supported and what they are filled in with.
-      

-      

-        A special application of this substitution mechanism is to make whole
-        blocks of HTML code disappear when a specific symbol is set. We use
-        this for many purposes, one of them being to include the beta warning
-        in all our user interface (CGI) pages when Privoxy is in an alpha or beta development
-        stage:
-      

-      

-      

-      
-        
-          
+      
+    

-
+
+  Privoxy's Template Files
+  
+  
+  
+  
+  
+  
+  
+
+
+
+  

+    
+      
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
Privoxy 3.0.26 User Manual
PrevNext

+    

+  

+
+  

+    
10. Privoxy's
+    Template Files

+
+    
All Privoxy built-in pages, i.e.
+    error pages such as the "404 - No Such Domain" error page,
+    the "BLOCKED" page and all pages
+    of its web-based user
+    interface, are generated from templates. (Privoxy must be running for the above links to work
+    as intended.)

+
+    
These templates are stored in a subdirectory of the configuration directory called templates. On Unixish platforms, this is typically
+    /etc/privoxy/templates/.

+
+    
The templates are basically normal HTML files, but with place-holders
+    (called symbols or exports), which Privoxy fills at run time. It is possible to edit
+    the templates with a normal text editor, should you want to customize
+    them. (Not recommended for the
+    casual user). Should you create your own custom templates, you
+    should use the config setting templdir to specify an alternate location, so
+    your templates do not get overwritten during upgrades.

+
+    
Note that just like in configuration files, lines starting with
+    # are ignored when the templates are filled
+    in.

+
+    
The place-holders are of the form @name@, and
+    you will find a list of available symbols, which vary from template to
+    template, in the comments at the start of each file. Note that these
+    comments are not always accurate, and that it's probably best to look at
+    the existing HTML code to find out which symbols are supported and what
+    they are filled in with.

+
+    
A special application of this substitution mechanism is to make whole
+    blocks of HTML code disappear when a specific symbol is set. We use this
+    for many purposes, one of them being to include the beta warning in all
+    our user interface (CGI) pages when Privoxy is in an alpha or beta development
+    stage:

+
+    
+      
+        
-        
-      

+          
 <!-- @if-unstable-start -->
 
   ... beta warning HTML code goes here ...
 
 <!-- if-unstable-end@ -->
 

-          

-
-      

-        If the "unstable" symbol is set, everything in between and including
-        @if-unstable-start and if-unstable-end@ will disappear, leaving nothing but
-        an empty comment:
-      

-      

-      

-      
-        
-          
+      
+    

-
+        

+
+    
If the "unstable" symbol is set, everything in between and including
+    @if-unstable-start and if-unstable-end@ will disappear, leaving nothing but an
+    empty comment:

+
+    
+      
+        
-        
-      

+          
 <!--  -->
 

-          

-
-      

-        There's also an if-then-else construct and an #include mechanism, but you'll sure find out if you
-        are inclined to edit the templates ;-)
-      

-      

-        All templates refer to a style located at http://config.privoxy.org/send-stylesheet. This
-        is, of course, locally served by Privoxy and the source for it can be found and
-        edited in the cgi-style.css template.
-      

-    

-    

-      

-      
-        
-          
-          
-          
-        
-        
-          
-          
-          
-        
-      

-            Prev
-          
-            Home
-          
-            Next
-          

-            Filter Files
-          
-             
-          
-            Contacting the Developers, Bug Reporting and Feature Requests
-          

-    

-  
-
+        

+
+    
There's also an if-then-else construct and an #include mechanism, but you'll sure find out if you are
+    inclined to edit the templates ;-)

+
+    
All templates refer to a style located at http://config.privoxy.org/send-stylesheet. This is, of
+    course, locally served by Privoxy and
+    the source for it can be found and edited in the cgi-style.css template.

+  

+
+  

+    

 
+    
+      
+        
+
+        
+
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
PrevHomeNext
Filter Files Contacting the Developers,
+        Bug Reporting and Feature Requests

+  

+
+
diff --git a/doc/webserver/user-manual/whatsnew.html b/doc/webserver/user-manual/whatsnew.html
index cf2320e7..2dd2b62b 100644
--- a/doc/webserver/user-manual/whatsnew.html
+++ b/doc/webserver/user-manual/whatsnew.html
@@ -1,566 +1,589 @@
-
+
+
 
-  
-    
-      What's New in this Release
-    
-    
-    
-    
-    
-    
-    
-    
-  
-  
-    

-      
-        
-          
-        
-        
-          
-          
-          
-        
-      

-            Privoxy 3.0.26 User Manual
-          

-            Prev
-          
-          
-            Next
-          

-      

-    

-    

-      

-        3. What's New in this Release
-      

-      

-        Privoxy 3.0.25 beta introduces
-        client-specific tags and includes a couple of minor improvements. It
-        will be followed by a stable release in the near future.
-      

-      

-      

+
+  What's New in this Release
+  
+  
+  
+  
+  
+  
+  
+
+
+
+  

+    
+      
+        
+      
+
+      
+        
+
+        
+
+        
+      
+    
Privoxy 3.0.26 User Manual
PrevNext

+    

+  

+
+  

+    
3. What's New in this
+    Release

+
+    
Privoxy 3.0.26 changes

+
+    
    
+      
  • 
+        
    Bug fixes:
    
+
+        
      
+          
    • 
+            
      accept_connection(): Fix crashes with "listen-addr :8118"
      
+
+            
      After jbsockets.c v1.136 a valid text representation of the
+            host address is required for the $listen-address variable. If no
+            host address has been specified, use an empty string to prevent
+            NULL pointer dereferences.
      
+
+            
      The problem was reported by Marvin Renich in Debian bug
+            #834941, the offending commit was tracked down by Roland in SF
+            Bug #902.
      
+          
      • 
+        
    
+      
    • 
+
+      
  • 
+        
    General improvements:
    
+
+        
      
+          
    • 
+            
      Log when privoxy is toggled on or off via cgi interface.
      
+          
      • 
+
+          
    • 
+            
      Highlight the "Info: Now toggled " on/off log message in the
+            windows log viewer.
      
+          
      • 
+
+          
    • 
+            
      Highlight the loading actions/filter file log message in the
+            windows log viewer.
      
+          
      • 
+
+          
    • 
+            
      Mention client-specific tags on the toggle page as a
+            potentionally more appropriate alternative.
      
+          
      • 
+        
    
+      
    • 
+
+      
  • 
+        
    Documentation improvements:
    
+
+        
      
+          
    • 
+            
      Update download section on the homepage. The downloads are
+            available from the website now.
      
+          
      • 
+
+          
    • 
+            
      Add sponsor FAQ
      
+          
      • 
+
+          
    • 
+            
      Remove obsolete reference to mailing lists hosted at
+            SourceForge
      
+          
      • 
+
+          
    • 
+            
      Update the "Before the Release" section of the developer
+            manual.
      
+          
      • 
+        
    
+      
    • 
+
+      
  • 
+        
    Infrastructure improvements:
    
+
+        
      
+          
    • 
+            
      Add perl script to generate an RSS feed for the packages
      
+
+            
      Submitted by "Unknown":
+            https://lists.privoxy.org/pipermail/privoxy-devel/2016-July/000068.html
      
+          
      • 
+        
    
+      
    • 
+
+      
  • 
+        
    Build system improvements:
    
+
+        
      
+          
    • 
+            
      strptime.h: fix a compiler warning about ambiguous else
      
+          
      • 
+
+          
    • 
+            
      configure.in: Check for Docbook goo on the BSDs as well
      
+          
      • 
+
+          
    • 
+            
      GNUMakefile.in: Let the dok-user target remove temporary
+            files
      
+          
      • 
+        
    
+      
    • 
+    

+
+    
Privoxy 3.0.25 beta introduces
+    client-specific tags and includes a couple of minor improvements. It will
+    be followed by a stable release in the near future.

+
+    
    
+      
  • 
+        
    Bug fixes:
    
+
+        
      
+          
    • 
+            
      Always use the current toggle state for new requests.
+            Previously new requests on reused connections inherited the
+            toggle state from the previous request even though the toggle
+            state could have changed. Reported by Robert Klemme.
      
+          
      • 
+
+          
    • 
+            
      Fixed two buffer-overflows in the (deprecated) static pcre
+            code. These bugs are not considered security issues as the input
+            is trusted. Found with afl-fuzz and ASAN.
      
+          
      • 
+        
    
+      
    • 
+
+      
  • 
+        
    General improvements:
    
+
+        
      
+          
    • 
+            
      Added support for client-specific tags which allow Privoxy
+            admins to pre-define tags that are set for all requests from
+            clients that previously opted in through the CGI interface. They
+            are useful in multi-user setups where admins may want to allow
+            users to disable certain actions and filters for themselves
+            without affecting others. In single-user setups they are useful
+            to allow more fine-grained toggling. For example to disable
+            request blocking while still crunching cookies, or to disable
+            experimental filters only. This is an experimental feature, the
+            syntax and behaviour may change in future versions. Sponsored by
+            Robert Klemme.
      
+          
      • 
+
+          
    • 
+            
      Dynamic filters and taggers now support a $listen-address
+            variable which contains the address the request came in on. For
+            external filters the variable is called $PRIVOXY_LISTEN_ADDRESS.
+            Original patch contributed by pursievro.
      
+          
      • 
+
+          
    • 
+            
      Add client-header-tagger 'listen-address'.
      
+          
      • 
+
+          
    • 
+            
      Include the listen-address in the log message when logging new
+            requests. Patch contributed by pursievro.
      
+          
      • 
+
+          
    • 
+            
      Turn invalid max-client-connections values into fatal
+            errors.
      
+          
      • 
+
+          
    • 
+            
      The show-status page now shows whether or not dates before
+            1970 and after 2038 are expected to be handled properly. This is
+            mainly useful for Privoxy-Regression-Test but could also come
+            handy when dealing with time-related support requests.
      
+          
      • 
+
+          
    • 
+            
      On Mac OS X the thread id in log messages are more likely to
+            be unique now.
      
+          
      • 
+
+          
    • 
+            
      When complaining about missing filters, the filter type is
+            logged as well.
      
+          
      • 
+
+          
    • 
+            
      A couple of harmless coverity warnings were silenced (CID
+            #161202, CID #161203, CID #161211).
      
+          
      • 
+        
    
+      
    • 
+
+      
  • 
+        
    Action file improvements:
    
+
+        
      
+          
    • 
+            
      Filtering is disabled for Range requests to let download
+            resumption and Windows updates work with the default
+            configuration.
      
+          
      • 
+
+          
    • 
+            
      Unblock ".ardmediathek.de/". Reported by ThTomate in #932.
      
+          
      • 
+        
    
+      
    • 
+
+      
  • 
+        
    Documentation improvements:
    
+
+        
      
+          
    • 
+            
      Add FAQ entry for crashes caused by memory limits.
      
+          
      • 
+
+          
    • 
+            
      Remove obsolete FAQ entry about a bug in PHP 4.2.3.
      
+          
      • 
+
+          
    • 
+            
      Mention the new mailing lists were appropriate. As the
+            archives have not been migrated, continue to mention the archives
+            at SF in the contacting section for now.
      
+          
      • 
+
+          
    • 
+            
      Note that the templates should be adjusted if Privoxy is
+            running as intercepting proxy without getting all requests.
      
+          
      • 
+
+          
    • 
+            
      A bunch of links were converted to https://.
      
+          
      • 
+
+          
    • 
+            
      Rephrase onion service paragraph to make it more obvious that
+            Tor is involved and that the whole website (and not just the
+            homepage) is available as onion service.
      
+          
      • 
+
+          
    • 
+            
      Streamline the "More information" section on the homepage
+            further by additionally ditching the link to the 'See also'
+            section of the user manual. The section contains mostly links
+            that are directly reachable from the homepage already and the
+            rest is not significant enough to get a link from the
+            homepage.
      
+          
      • 
+
+          
    • 
+            
      Change the add-header{} example to set the DNT header and use
+            a complete section to make copy and pasting more convenient. Add
+            a comment to make it obvious that adding the header is not
+            recommended for obvious reasons. Using the DNT header as example
+            was suggested by Leo Wzukw.
      
+          
      • 
+
+          
    • 
+            
      Streamline the support-and-service template Instead of linking
+            to the various support trackers (whose URLs hopefully change
+            soon), link to the contact section of the user manual to increase
+            the chances that users actually read it.
      
+          
      • 
+
+          
    • 
+            
      Add a FAQ entry for tainted sockets.
      
+          
      • 
+
+          
    • 
+            
      More sections in the documentation have stable URLs now.
      
+          
      • 
+
+          
    • 
+            
      FAQ: Explain why 'ping config.privoxy.org' is not expected to
+            reach a local Privoxy installation.
      
+          
      • 
+
+          
    • 
+            
      Note that donations done through Zwiebelfreunde e.V. currently
+            can't be checked automatically.
      
+          
      • 
+
+          
    • 
+            
      Updated section regarding starting Privoxy under OS X.
      
+          
      • 
+
+          
    • 
+            
      Use dedicated start instructions for FreeBSD and
+            ElectroBSD.
      
+          
      • 
+
+          
    • 
+            
      Removed release instructions for AIX. They haven't been
+            working for years and unsurprisingly nobody seems to care.
      
+          
      • 
+
+          
    • 
+            
      Removed obsolete reference to the solaris-dist target.
      
+          
      • 
+
+          
    • 
+            
      Updated the release instructions for FreeBSD.
      
+          
      • 
+
+          
    • 
+            
      Removed unfinished release instructions for Amiga OS and HP-UX
+            11.
      
+          
      • 
+
+          
    • 
+            
      Added a pointer to the Cygwin Time Machine for getting the
+            last release of Cygwin version 1.5 to use for building Privoxy on
+            Windows.
      
+          
      • 
+
+          
    • 
+            
      Various typos have been fixed.
      
+          
      • 
+        
    
+      
    • 
+
+      
  • 
+        
    Infrastructure improvements:
    
+
+        
      
+          
    • 
+            
      The website is no longer hosted at SourceForge and can be
+            reached through https now.
      
+          
      • 
+
+          
    • 
+            
      The mailing lists at SourceForge have been deprecated, you can
+            subscribe to the new ones at: https://lists.privoxy.org/
      
+          
      • 
+
+          
    • 
+            
      Migrating the remaining services from SourceForge is work in
+            progress (TODO list item #53).
      
+          
      • 
+        
    
+      
    • 
+
+      
  • 
+        
    Build system improvements:
    
+
+        
      
+          
    • 
+            
      Add configure argument to optimistically redefine FD_SETSIZE
+            with the intent to change the maximum number of client
+            connections Privoxy can handle. Only works with some libcs.
+            Sponsored by Robert Klemme.
      
+          
      • 
+
+          
    • 
+            
      Let the tarball-dist target skip files in ".git".
      
+          
      • 
+
+          
    • 
+            
      Let the tarball-dist target work in cwds other than
+            current.
      
+          
      • 
+
+          
    • 
+            
      Make the 'clean' target faster when run from a git
+            repository.
      
+          
      • 
+
+          
    • 
+            
      Include tools in the generic distribution.
      
+          
      • 
+
+          
    • 
+            
      Let the gen-dist target work in cwds other than current.
      
+          
      • 
+
+          
    • 
+            
      Sort find output that is used for distribution tarballs to get
+            reproducible results.
      
+          
      • 
+
+          
    • 
+            
      Don't add '-src' to the name of the tar ball generated by the
+            gen-dist target. The package isn't a source distribution but a
+            binary package. While at it, use a variable for the name to
+            reduce the chances that the various references get out of sync
+            and fix the gen-upload target which was looking in the wrong
+            directory.
      
+          
      • 
+
+          
    • 
+            
      Add regression-tests.action to the files that are
+            distributed.
      
+          
      • 
+
+          
    • 
+            
      The gen-dist target which was broken since 2002 (r1.92) has
+            been fixed.
      
+          
      • 
+
+          
    • 
+            
      Remove genclspec.sh which has been obsolete since 2009.
      
+          
      • 
+
+          
    • 
+            
      Remove obsolete reference to Redhat spec file.
      
+          
      • 
+
+          
    • 
+            
      Remove the obsolete announce target which has been commented
+            out years ago.
      
+          
      • 
+
+          
    • 
+            
      Let rsync skip files if the checksums match.
      
+          
      • 
+        
    
+      
    • 
+
+      
  • 
+        
    Privoxy-Regression-Test:
    
+
+        
      
+          
    • 
+            
      Add a "Default level offset" directive which can be used to
+            change the default level by a given value. This directive affects
+            all tests located after it until the end of the file or a another
+            "Default level offset" directive is reached. The purpose of this
+            directive is to make it more convenient to skip similar tests in
+            a given file without having to remove or disable the tests
+            completely.
      
+          
      • 
+
+          
    • 
+            
      Let test level 17 depend on FEATURE_64_BIT_TIME_T instead of
+            FEATURE_PTHREAD which has no direct connection to the time_t
+            size.
      
+          
      • 
+
+          
    • 
+            
      Fix indentation in perldoc examples.
      
+          
      • 
+
+          
    • 
+            
      Don't overlook directives in the first line of the action
+            file.
      
+          
      • 
+
+          
    • 
+            
      Bump version to 0.7.
      
+          
      • 
+
+          
    • 
+            
      Fix detection of the Privoxy version now that https:// is used
+            for the website.
      
+          
      • 
+        
    
+      
    • 
+    

+
+    

+      
3.1. Note
+      to Upgraders

+
+      
A quick list of things to be aware of before upgrading from earlier
+      versions of Privoxy:

+
       
    
         
  • 
-          
    
-            Bug fixes:
-          
    
-          
      
-            
    • 
-              
      
-                Always use the current toggle state for new requests.
-                Previously new requests on reused connections inherited the
-                toggle state from the previous request even though the toggle
-                state could have changed. Reported by Robert Klemme.
-              
      
-            
      • 
-            
    • 
-              
      
-                Fixed two buffer-overflows in the (deprecated) static pcre
-                code. These bugs are not considered security issues as the
-                input is trusted. Found with afl-fuzz and ASAN.
-              
      
-            
      • 
-          
    
-        
    • 
-        
  • 
-          
    
-            General improvements:
-          
    
-          
      
-            
    • 
-              
      
-                Added support for client-specific tags which allow Privoxy
-                admins to pre-define tags that are set for all requests from
-                clients that previously opted in through the CGI interface.
-                They are useful in multi-user setups where admins may want to
-                allow users to disable certain actions and filters for
-                themselves without affecting others. In single-user setups
-                they are useful to allow more fine-grained toggling. For
-                example to disable request blocking while still crunching
-                cookies, or to disable experimental filters only. This is an
-                experimental feature, the syntax and behaviour may change in
-                future versions. Sponsored by Robert Klemme.
-              
      
-            
      • 
-            
    • 
-              
      
-                Dynamic filters and taggers now support a $listen-address
-                variable which contains the address the request came in on.
-                For external filters the variable is called
-                $PRIVOXY_LISTEN_ADDRESS. Original patch contributed by
-                pursievro.
-              
      
-            
      • 
-            
    • 
-              
      
-                Add client-header-tagger 'listen-address'.
-              
      
-            
      • 
-            
    • 
-              
      
-                Include the listen-address in the log message when logging
-                new requests. Patch contributed by pursievro.
-              
      
-            
      • 
-            
    • 
-              
      
-                Turn invalid max-client-connections values into fatal errors.
-              
      
-            
      • 
-            
    • 
-              
      
-                The show-status page now shows whether or not dates before
-                1970 and after 2038 are expected to be handled properly. This
-                is mainly useful for Privoxy-Regression-Test but could also
-                come handy when dealing with time-related support requests.
-              
      
-            
      • 
-            
    • 
-              
      
-                On Mac OS X the thread id in log messages are more likely to
-                be unique now.
-              
      
-            
      • 
-            
    • 
-              
      
-                When complaining about missing filters, the filter type is
-                logged as well.
-              
      
-            
      • 
-            
    • 
-              
      
-                A couple of harmless coverity warnings were silenced (CID
-                #161202, CID #161203, CID #161211).
-              
      
-            
      • 
-          
    
-        
    • 
-        
  • 
-          
    
-            Action file improvements:
-          
    
-          
      
-            
    • 
-              
      
-                Filtering is disabled for Range requests to let download
-                resumption and Windows updates work with the default
-                configuration.
-              
      
-            
      • 
-            
    • 
-              
      
-                Unblock ".ardmediathek.de/". Reported by ThTomate in #932.
-              
      
-            
      • 
-          
    
+          
    The recommended way to upgrade Privoxy is to backup your old configuration
+          files, install the new ones, verify that Privoxy is working correctly and finally merge
+          back your changes using diff and
+          maybe patch.
    
+
+          
    There are a number of new features in each Privoxy release and most of them have to be
+          explicitly enabled in the configuration files. Old configuration
+          files obviously don't do that and due to syntax changes using old
+          configuration files with a new Privoxy isn't always possible anyway.
    
         
    • 
+
         
  • 
-          
    
-            Documentation improvements:
-          
    
-          
      
-            
    • 
-              
      
-                Add FAQ entry for crashes caused by memory limits.
-              
      
-            
      • 
-            
    • 
-              
      
-                Remove obsolete FAQ entry about a bug in PHP 4.2.3.
-              
      
-            
      • 
-            
    • 
-              
      
-                Mention the new mailing lists were appropriate. As the
-                archives have not been migrated, continue to mention the
-                archives at SF in the contacting section for now.
-              
      
-            
      • 
-            
    • 
-              
      
-                Note that the templates should be adjusted if Privoxy is
-                running as intercepting proxy without getting all requests.
-              
      
-            
      • 
-            
    • 
-              
      
-                A bunch of links were converted to https://.
-              
      
-            
      • 
-            
    • 
-              
      
-                Rephrase onion service paragraph to make it more obvious that
-                Tor is involved and that the whole website (and not just the
-                homepage) is available as onion service.
-              
      
-            
      • 
-            
    • 
-              
      
-                Streamline the "More information" section on the homepage
-                further by additionally ditching the link to the 'See also'
-                section of the user manual. The section contains mostly links
-                that are directly reachable from the homepage already and the
-                rest is not significant enough to get a link from the
-                homepage.
-              
      
-            
      • 
-            
    • 
-              
      
-                Change the add-header{} example to set the DNT header and use
-                a complete section to make copy and pasting more convenient.
-                Add a comment to make it obvious that adding the header is
-                not recommended for obvious reasons. Using the DNT header as
-                example was suggested by Leo Wzukw.
-              
      
-            
      • 
-            
    • 
-              
      
-                Streamline the support-and-service template Instead of
-                linking to the various support trackers (whose URLs hopefully
-                change soon), link to the contact section of the user manual
-                to increase the chances that users actually read it.
-              
      
-            
      • 
-            
    • 
-              
      
-                Add a FAQ entry for tainted sockets.
-              
      
-            
      • 
-            
    • 
-              
      
-                More sections in the documentation have stable URLs now.
-              
      
-            
      • 
-            
    • 
-              
      
-                FAQ: Explain why 'ping config.privoxy.org' is not expected to
-                reach a local Privoxy installation.
-              
      
-            
      • 
-            
    • 
-              
      
-                Note that donations done through Zwiebelfreunde e.V.
-                currently can't be checked automatically.
-              
      
-            
      • 
-            
    • 
-              
      
-                Updated section regarding starting Privoxy under OS X.
-              
      
-            
      • 
-            
    • 
-              
      
-                Use dedicated start instructions for FreeBSD and ElectroBSD.
-              
      
-            
      • 
-            
    • 
-              
      
-                Removed release instructions for AIX. They haven't been
-                working for years and unsurprisingly nobody seems to care.
-              
      
-            
      • 
-            
    • 
-              
      
-                Removed obsolete reference to the solaris-dist target.
-              
      
-            
      • 
-            
    • 
-              
      
-                Updated the release instructions for FreeBSD.
-              
      
-            
      • 
-            
    • 
-              
      
-                Removed unfinished release instructions for Amiga OS and
-                HP-UX 11.
-              
      
-            
      • 
-            
    • 
-              
      
-                Added a pointer to the Cygwin Time Machine for getting the
-                last release of Cygwin version 1.5 to use for building
-                Privoxy on Windows.
-              
      
-            
      • 
-            
    • 
-              
      
-                Various typos have been fixed.
-              
      
-            
      • 
-          
    
+          
    Note that some installers remove earlier versions completely,
+          including configuration files, therefore you should really save any
+          important configuration files!
    
         
    • 
+
         
  • 
-          
    
-            Infrastructure improvements:
-          
    
-          
      
-            
    • 
-              
      
-                The website is no longer hosted at SourceForge and can be
-                reached through https now.
-              
      
-            
      • 
-            
    • 
-              
      
-                The mailing lists at SourceForge have been deprecated, you
-                can subscribe to the new ones at: https://lists.privoxy.org/
-              
      
-            
      • 
-            
    • 
-              
      
-                Migrating the remaining services from SourceForge is work in
-                progress (TODO list item #53).
-              
      
-            
      • 
-          
    
+          
    On the other hand, other installers don't overwrite existing
+          configuration files, thinking you will want to do that
+          yourself.
    
         
    • 
+
         
  • 
-          
    
-            Build system improvements:
-          
    
-          
      
-            
    • 
-              
      
-                Add configure argument to optimistically redefine FD_SETSIZE
-                with the intent to change the maximum number of client
-                connections Privoxy can handle. Only works with some libcs.
-                Sponsored by Robert Klemme.
-              
      
-            
      • 
-            
    • 
-              
      
-                Let the tarball-dist target skip files in ".git".
-              
      
-            
      • 
-            
    • 
-              
      
-                Let the tarball-dist target work in cwds other than current.
-              
      
-            
      • 
-            
    • 
-              
      
-                Make the 'clean' target faster when run from a git
-                repository.
-              
      
-            
      • 
-            
    • 
-              
      
-                Include tools in the generic distribution.
-              
      
-            
      • 
-            
    • 
-              
      
-                Let the gen-dist target work in cwds other than current.
-              
      
-            
      • 
-            
    • 
-              
      
-                Sort find output that is used for distribution tarballs to
-                get reproducible results.
-              
      
-            
      • 
-            
    • 
-              
      
-                Don't add '-src' to the name of the tar ball generated by the
-                gen-dist target. The package isn't a source distribution but
-                a binary package. While at it, use a variable for the name to
-                reduce the chances that the various references get out of
-                sync and fix the gen-upload target which was looking in the
-                wrong directory.
-              
      
-            
      • 
-            
    • 
-              
      
-                Add regression-tests.action to the files that are
-                distributed.
-              
      
-            
      • 
-            
    • 
-              
      
-                The gen-dist target which was broken since 2002 (r1.92) has
-                been fixed.
-              
      
-            
      • 
-            
    • 
-              
      
-                Remove genclspec.sh which has been obsolete since 2009.
-              
      
-            
      • 
-            
    • 
-              
      
-                Remove obsolete reference to Redhat spec file.
-              
      
-            
      • 
-            
    • 
-              
      
-                Remove the obsolete announce target which has been commented
-                out years ago.
-              
      
-            
      • 
-            
    • 
-              
      
-                Let rsync skip files if the checksums match.
-              
      
-            
      • 
-          
    
+          
    In the default configuration only fatal errors are logged now.
+          You can change that in the debug
+          section of the configuration file. You may also want to enable
+          more verbose logging until you verified that the new Privoxy version is working as expected.
    
         
    • 
+
         
  • 
-          
    
-            Privoxy-Regression-Test:
-          
    
-          
      
-            
    • 
-              
      
-                Add a "Default level offset" directive which can be used to
-                change the default level by a given value. This directive
-                affects all tests located after it until the end of the file
-                or a another "Default level offset" directive is reached. The
-                purpose of this directive is to make it more convenient to
-                skip similar tests in a given file without having to remove
-                or disable the tests completely.
-              
      
-            
      • 
-            
    • 
-              
      
-                Let test level 17 depend on FEATURE_64_BIT_TIME_T instead of
-                FEATURE_PTHREAD which has no direct connection to the time_t
-                size.
-              
      
-            
      • 
-            
    • 
-              
      
-                Fix indentation in perldoc examples.
-              
      
-            
      • 
-            
    • 
-              
      
-                Don't overlook directives in the first line of the action
-                file.
-              
      
-            
      • 
-            
    • 
-              
      
-                Bump version to 0.7.
-              
      
-            
      • 
-            
    • 
-              
      
-                Fix detection of the Privoxy version now that https:// is
-                used for the website.
-              
      
-            
      • 
-          
    
+          
    Three other config file settings are now off by default:
+          enable-remote-toggle,
+          enable-remote-http-toggle,
+          and enable-edit-actions. If you
+          use or want these, you will need to explicitly enable them, and be
+          aware of the security issues involved.
    
         
    • 
       

-
-      

-        

-          3.1. Note to Upgraders
-        

-        

-          A quick list of things to be aware of before upgrading from earlier
-          versions of Privoxy:
-        

-        

-        

-        
    
-          
  • 
-            
    
-              The recommended way to upgrade Privoxy is to backup your old
-              configuration files, install the new ones, verify that Privoxy is working correctly and
-              finally merge back your changes using diff and maybe patch.
-            
    
-            
    
-              There are a number of new features in each Privoxy release and most of them have to
-              be explicitly enabled in the configuration files. Old
-              configuration files obviously don't do that and due to syntax
-              changes using old configuration files with a new Privoxy isn't always possible anyway.
-            
    
-          
    • 
-          
  • 
-            
    
-              Note that some installers remove earlier versions completely,
-              including configuration files, therefore you should really save
-              any important configuration files!
-            
    
-          
    • 
-          
  • 
-            
    
-              On the other hand, other installers don't overwrite existing
-              configuration files, thinking you will want to do that
-              yourself.
-            
    
-          
    • 
-          
  • 
-            
    
-              In the default configuration only fatal errors are logged now.
-              You can change that in the debug
-              section of the configuration file. You may also want to
-              enable more verbose logging until you verified that the new
-              Privoxy version is working as
-              expected.
-            
    
-          
    • 
-          
  • 
-            
    
-              Three other config file settings are now off by default: enable-remote-toggle, enable-remote-http-toggle,
-              and enable-edit-actions. If
-              you use or want these, you will need to explicitly enable them,
-              and be aware of the security issues involved.
-            
    
-          
    • 
-        

-      

-    

-    

-      

-      
-        
-          
-          
-          
-        
-        
-          
-          
-          
-        
-      

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-          
-            Home
-          
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-          

-            Installation
-          
-             
-          
-            Quickstart to Using Privoxy
-          

     

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