+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
<HTML
><HEAD
><TITLE
>What's New in this Release</TITLE
><META
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-CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
-"><LINK
+CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
REL="HOME"
-TITLE="Privoxy 3.0.6 User Manual"
+TITLE="Privoxy 3.0.16 User Manual"
HREF="index.html"><LINK
REL="PREVIOUS"
TITLE="Installation"
HREF="quickstart.html"><LINK
REL="STYLESHEET"
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-HREF="../p_doc.css">
+HREF="../p_doc.css"><META
+HTTP-EQUIV="Content-Type"
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<LINK REL="STYLESHEET" TYPE="text/css" HREF="p_doc.css">
</head
><BODY
><TH
COLSPAN="3"
ALIGN="center"
->Privoxy 3.0.6 User Manual</TH
+>Privoxy 3.0.16 User Manual</TH
></TR
><TR
><TD
CLASS="SECT1"
><A
NAME="WHATSNEW"
-></A
->3. What's New in this Release</H1
+>3. What's New in this Release</A
+></H1
><P
-> There are many improvements and new features since <SPAN
+> <SPAN
CLASS="APPLICATION"
->Privoxy 3.0.3</SPAN
->, the last stable release:</P
+>Privoxy 3.0.16</SPAN
+> is a stable release.
+ The changes since 3.0.15 beta are:</P
><P
> <P
></P
><UL
><LI
><P
-> Multiple <A
-HREF="filter-file.html"
->filter files</A
-> can now be specified in <TT
-CLASS="FILENAME"
->config</TT
->. This allows for
- locally defined filters that can be maintained separately from the filters as
- supplied by the developers, i.e. <TT
-CLASS="FILENAME"
->default.filter</TT
->.
+> Added the config file option handle-as-empty-doc-returns-ok to
+ work around Firefox bug #492459, which causes Firefox to hang
+ if JavaScripts are blocked in certain situations. The option is
+ enabled in the default config file.
</P
></LI
><LI
><P
->
- There are a number of new <A
-HREF="actions-file.html"
->actions</A
->:
- </P
+> Added the config option default-server-timeout to control the
+ assumed default server timeout. Since Privoxy no longer returns
+ an error message for connection resets on reused client connections,
+ assuming larger server timeout values appears to actually work
+ pretty well as long as connections aren't shared.
+ </P
+></LI
+><LI
+><P
+> Added optional support for FreeBSD's accf_http(9). Use the
+ configure option --enable-accept-filter to enable it.
+ </P
+></LI
+><LI
+><P
+> Added fancier Privoxy icons for win32. Contributed by Jeff H.
+ </P
+></LI
+><LI
+><P
+> In daemon mode, fd 0, 1 and 2 are bound to /dev/null.
+ </P
+></LI
+><LI
+><P
+> Resolve localhost using whatever address family the operating
+ system feels like. Previous betas would try to use IPv4 as this
+ is what most users expect, but this didn't work reliable on
+ GNU/Linux systems.
+ </P
+></LI
+><LI
><P
-> <P
+> In the action lists on CGI pages, actions and their parameters are
+ no longer separated with a space. The action file parser doesn't
+ actually allow this and will throw an invalid syntax error if actions
+ and parameters in the action files are separated. Not adding the
+ spaces means copy and pasting CGI output into the action files works.
+ </P
+></LI
+><LI
+><P
+> The default keep-alive timeout has been reduced to 5 seconds to work
+ around hangs in clients that treat the proxy like any other host and
+ stop allowing any new connections if the "maximum number of
+ connections per host" is reached.
+ </P
+></LI
+><LI
+><P
+> Several webbug URLs that look like they are leading to images are now
+ blocked as image instead of empty documents. Doing the latter causes
+ WebKit-based clients to show a "missing image" icon which may mess up
+ the layout.
+ </P
+></LI
+><LI
+><P
+> Accepts quoted expiration dates even though RFC 2109 10.1.2
+ doesn't seem to allow them. Reported anonymously.
+ </P
+></LI
+><LI
+><P
+> Don't try to forget connections if connection sharing is disabled.
+ This wasn't a real problem but caused an unnecessary log message.
+ </P
+></LI
+><LI
+><P
+> The still undocumented --enable-extended-host-patterns configure
+ option has a better description.
+ </P
+></LI
+><LI
+><P
+> Fixed an error message that would claim a write to the server
+ failed when actually writing to the client failed.
+ </P
+></LI
+><LI
+><P
+> Log the crunch reason before trying to write to the client.
+ The log is easier to read that way.
+ </P
+></LI
+><LI
+><P
+> Several log messages about client connections also mention
+ the socket number.
+ </P
+></LI
+><LI
+><P
+> handle-as-empty-document no longer depends on the image blocking
+ code being enabled.
+ </P
+></LI
+><LI
+><P
+> Privoxy-Log-Parser is roughly 40% faster in highlighting mode.
+ </P
+></LI
+><LI
+><P
+> uagen, a Firefox User-Agent generator for Privoxy and Mozilla
+ browsers has been imported and is available in the tarballs
+ tools directory.
+ </P
+></LI
+><LI
+><P
+> The scripts in the tools directory treat unknown parameters
+ as fatal errors.
+ </P
+></LI
+></UL
+></P
+><P
+> If you missed the previous two beta versions, you may also be
+ interested in the additional changes since 3.0.12, the
+ last stable release:</P
+><P
+> <P
></P
><UL
><LI
><P
-> <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#CONTENT-TYPE-OVERWRITE"
->content-type-overwrite</A
-></TT
->
- </P
+> Added IPv6 support. Thanks to Petr Pisar who not only provided
+ the initial patch but also helped a lot with the integration.
+ </P
></LI
><LI
><P
-> <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#CRUNCH-CLIENT-HEADER"
->crunch-client-header</A
-></TT
->
- </P
+> Added client-side keep-alive support.
+ </P
></LI
><LI
><P
-> <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#CRUNCH-IF-NONE-MATCH"
->crunch-if-none-match</A
-></TT
->
- </P
+> The connection sharing code is only used if the connection-sharing
+ option is enabled.
+ </P
></LI
><LI
><P
-> <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#CRUNCH-SERVER-HEADER"
->crunch-server-header</A
-></TT
->
- </P
+> The latency is taken into account when evaluating whether or not to
+ reuse a connection. This should significantly reduce the number of
+ connections problems several users reported.
+ </P
></LI
><LI
><P
-> <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#FILTER-CLIENT-HEADERS"
->filter-client-headers</A
-></TT
->
- </P
+> The max-client-connections option has been added to restrict
+ the number of client connections below a value enforced by
+ the operating system.
+ </P
></LI
><LI
><P
-> <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#FILTER-SERVER-HEADERS"
->filter-server-headers</A
-></TT
->
- </P
+> If the server doesn't specify how long the connection stays alive,
+ Privoxy errs on the safe side of caution and assumes it's only a second.
+ </P
></LI
><LI
><P
-> <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#FORCE-TEXT-MODE"
->force-text-mode</A
-></TT
->
- </P
+> Setting keep-alive-timeout to 0 disables keep-alive support. Previously
+ Privoxy would claim to allow persistence but not reuse the connection.
+ </P
></LI
><LI
><P
-> <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#HANDLE-AS-EMPTY-DOCUMENT"
->handle-as-empty-document</A
-></TT
->
- </P
+> Pipelined requests are less likely to be mistaken for the request
+ body of the previous request. Note that Privoxy still has no real
+ pipeline support and will either serialize pipelined requests or
+ drop them in which case the client has to resent them.
+ </P
></LI
><LI
><P
-> <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#HIDE-ACCEPT-LANGUAGE"
->hide-accept-language</A
-></TT
->
- </P
+> Fixed a crash on some Windows versions when header randomization
+ is enabled and the date couldn't be parsed.
+ </P
></LI
><LI
><P
-> <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#HIDE-CONTENT-DISPOSITION"
->hide-content-disposition</A
-></TT
->
- </P
+> Privoxy's keep-alive timeout for the current connection is reduced
+ to the one specified in the client's Keep-Alive header.
+ </P
></LI
><LI
><P
-> <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#HIDE-IF-MODIFIED-SINCE"
->hide-if-modified-since</A
-></TT
->
- </P
+> For HTTP/1.1 requests, Privoxy implies keep-alive support by not
+ setting any Connection header instead of using 'Connection: keep-alive'.
+ </P
></LI
><LI
><P
-> <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#INSPECT-JPEGS"
->inspect-jpegs</A
-></TT
->
- </P
+> If the socket isn't reusable, Privoxy doesn't temporarily waste
+ a socket slot to remember the connection.
+ </P
></LI
><LI
><P
-> <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#OVERWRITE-LAST-MODIFIED"
->overwrite-last-modified</A
-></TT
->
- </P
+> If keep-alive support is disabled but compiled in, the client's
+ Keep-Alive header is removed.
+ </P
></LI
><LI
><P
-> <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#REDIRECT"
->redirect</A
-></TT
->
- </P
+> Fixed a bug on mingw32 where downloading large files failed if
+ keep-alive support was enabled.
+ </P
></LI
><LI
><P
-> <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#TREAT-FORBIDDEN-CONNECTS-LIKE-BLOCKS"
->treat-forbidden-connects-like-blocks</A
-></TT
->
- </P
+> Fixed a bug that (at least theoretically) could cause log
+ timestamps to be occasionally off by about a second.
+ </P
></LI
-></UL
->
- </P
+><LI
><P
-> In addition, <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#FAST-REDIRECTS"
->fast-redirects</A
-></TT
->
- has been significantly improved with enhanced syntax.
- </P
+> The configure script respects the $PATH variable when searching
+ for groups and id.
+ </P
+></LI
+><LI
><P
-> And <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#HIDE-REFERRER"
->hide-referrer</A
-></TT
->
- has a new option, <TT
-CLASS="LITERAL"
->conditional block</TT
->.
+> Compressed content with extra fields couldn't be decompressed
+ and would get passed to the client unfiltered. This problem
+ has only be detected through statical analysis with clang as
+ nobody seems to be using extra fields anyway.
</P
></LI
><LI
><P
-> <SPAN
-CLASS="APPLICATION"
->MS-Windows</SPAN
-> versions can now be
- <A
-HREF="installation.html#INSTALLATION-PACK-WIN"
->installed and
- started as a <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->Windows service</I
-></SPAN
-></A
->.
+> If the server resets the Connection after sending only the headers
+ Privoxy forwards what it got to the client. Previously Privoxy
+ would deliver an error message instead.
</P
></LI
><LI
><P
-> <TT
-CLASS="FILENAME"
->config</TT
-> has two new options:
- <A
-HREF="config.html#ENABLE-REMOTE-HTTP-TOGGLE"
->enable-remote-http-toggle</A
->,
- and <A
-HREF="config.html#FORWARDED-CONNECT-RETRIES"
->forwarded-connect-retries</A
->.
+> Error messages in case of connection timeouts use the right
+ HTTP status code.
</P
+></LI
+><LI
><P
-> And there is improved handling of the <A
-HREF="config.html#USER-MANUAL"
->user-manual</A
->
- option, for placing documentation and help files on the local system.
+> If spawning a child to handle a request fails, the client
+ gets an error message and Privoxy continues to listen for
+ new requests right away.
</P
></LI
><LI
><P
-> There are six new <A
-HREF="actions-file.html#FILTER"
->filters</A
->.
+> The error messages in case of server-connection timeouts or
+ prematurely closed server connections are now template-based.
</P
></LI
><LI
><P
-> Actions files problems and suggestions are now being directed to:
- <A
-HREF="http://sourceforge.net/tracker/?group_id=11118&atid=460288"
-TARGET="_top"
->http://sourceforge.net/tracker/?group_id=11118&atid=460288</A
->.
- Please use this to report such configuration related problems as missed
- ads, sites that don't function properly due to one action or another,
- innocent images being blocked, etc.
+> If zlib support isn't compiled in, Privoxy no longer tries to
+ filter compressed content unless explicitly asked to do so.
</P
></LI
><LI
><P
-> In addition, there are numerous bug fixes and significant enhancements,
- including error pages should no longer be cached if the problem is fixed,
- much better DNS error handling, various logging improvements, and
- configuration updates for better ad blocking and junk elimination.
+> In case of connections that are denied based on ACL directives,
+ the memory used for the client IP is no longer leaked.
+ </P
+></LI
+><LI
+><P
+> Fixed another small memory leak if the client request times out
+ while waiting for client headers other than the request line.
+ </P
+></LI
+><LI
+><P
+> The client socket is kept open until the server socket has
+ been marked as unused. This should increase the chances that
+ the still-open connection will be reused for the client's next
+ request to the same destination. Note that this only matters
+ if connection-sharing is enabled.
+ </P
+></LI
+><LI
+><P
+> A TODO list has been added to the source tarballs to give potential
+ volunteers a better idea of what the current goals are. Donations
+ are still welcome too: http://www.privoxy.org/faq/general.html#DONATE
+ </P
+></LI
+><LI
+><P
+> In case of missing server data, no error message is send to the
+ client if the request arrived on a reused connection. The client
+ is then supposed to silently retry the request without bothering
+ the user. This should significantly reduce the frequency of the
+ "No server or forwarder data received" error message many users
+ reported.
+ </P
+></LI
+><LI
+><P
+> More reliable detection of prematurely closed client sockets
+ with keep-alive enabled.
+ </P
+></LI
+><LI
+><P
+> FEATURE_CONNECTION_KEEP_ALIVE is decoupled from
+ FEATURE_CONNECTION_SHARING and now available on
+ all platforms.
+ </P
+></LI
+><LI
+><P
+> Improved handling of POST requests on reused connections.
+ Should fix problems with stalled connections after submitting
+ form data with some browser configurations.
+ </P
+></LI
+><LI
+><P
+> Fixed various latency calculation issues.
+ </P
+></LI
+><LI
+><P
+> Allows the client to pass NTLM authentication requests to a
+ forwarding proxy. This was already assumed and hinted to work
+ in 3.0.13 beta but actually didn't. Now it's confirmed to work
+ with IE, Firefox and Chrome.
+ Thanks to Francois Botha and Wan-Teh Chang
+ </P
+></LI
+><LI
+><P
+> Fixed a calculation problem if receiving the server headers
+ takes more than two reads, that could cause Privoxy to terminate
+ the connection prematurely. Reported by Oliver.
+ </P
+></LI
+><LI
+><P
+> Compiles again on platforms such as OpenBSD and systems
+ using earlier glibc version that don't support AI_ADDRCONFIG.
+ Anonymously submitted in #2872591.
+ </P
+></LI
+><LI
+><P
+> A bunch of MS VC project files and Suse and Redhat RPM spec
+ files have been removed as they were no longer maintained for
+ quite some time.
+ </P
+></LI
+><LI
+><P
+> Overly long action lines are properly rejected with a proper
+ error message. Previously they would be either rejected as
+ invalid or cause a core dump through abort().
+ </P
+></LI
+><LI
+><P
+> Already timed-out connections are no longer temporarily remembered.
+ They weren't reused anyway, but wasted a socket slot.
+ </P
+></LI
+><LI
+><P
+> len refers to the number of bytes actually read which might
+ differ from the ones received. Adjust log messages accordingly.
+ </P
+></LI
+><LI
+><P
+> The optional JavaScript on the CGI page uses encodeURIComponent()
+ instead of escape() which doesn't encode all characters that matter.
+ Anonymously reported in #2832722.
+ </P
+></LI
+><LI
+><P
+> Fix gcc45 warnings in decompress_iob().
+ </P
+></LI
+><LI
+><P
+> Various log message improvements.
+ </P
+></LI
+><LI
+><P
+> Privoxy-Regression-Test supports redirect tests.
+ </P
+></LI
+><LI
+><P
+> Privoxy-Log-Parser can gather some connection statistics.
</P
></LI
></UL
CLASS="SECT2"
><A
NAME="UPGRADERSNOTE"
-></A
->3.1. Note to Upgraders</H2
+>3.1. Note to Upgraders</A
+></H2
><P
> A quick list of things to be aware of before upgrading from earlier
versions of <SPAN
><UL
><LI
><P
->
- Some installers may remove earlier versions completely, including
- configuration files. Save any important configuration files!
+> The recommended way to upgrade <SPAN
+CLASS="APPLICATION"
+>Privoxy</SPAN
+> is to backup your old
+ configuration files, install the new ones, verify that <SPAN
+CLASS="APPLICATION"
+>Privoxy</SPAN
+>
+ is working correctly and finally merge back your changes using
+ <SPAN
+CLASS="APPLICATION"
+>diff</SPAN
+> and maybe <SPAN
+CLASS="APPLICATION"
+>patch</SPAN
+>.
</P
-></LI
-><LI
><P
->
- On the other hand, other installers may not overwrite any existing configuration
- files, thinking you will want to do that. You may want to manually check
- your saved files against the newer versions to see if the improvements have
- merit, or whether there are new options that you may want to consider.
- There are a number of new features, but most won't be available unless
- these features are incorporated into your configuration somehow.
+> There are a number of new features in each <SPAN
+CLASS="APPLICATION"
+>Privoxy</SPAN
+> 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
+ <SPAN
+CLASS="APPLICATION"
+>Privoxy</SPAN
+> isn't always possible anyway.
</P
></LI
><LI
><P
-> See the full documentation on
- <TT
-CLASS="LITERAL"
-><A
-HREF="actions-file.html#FAST-REDIRECTS"
->fast-redirects</A
-></TT
->
- which has changed syntax, and will require adjustments to local configs,
- such as <TT
-CLASS="FILENAME"
->user.action</TT
->. You must reference the new
- syntax:
- </P
-><P
-> <TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="90%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
-> { +fast-redirects{check-decoded-url} }
- .example.com
- mybank.com
- .google.</PRE
-></TD
-></TR
-></TABLE
-></P
-></LI
-><LI
-><P
-> The <TT
-CLASS="FILENAME"
->jarfile</TT
->,
- <A
-HREF="http://en.wikipedia.org/wiki/Browser_cookie"
-TARGET="_top"
->cookie</A
-> logger, is off by default now.
- </P
+>
+ Note that some installers remove earlier versions completely,
+ including configuration files, therefore you should really save
+ any important configuration files!
+ </P
></LI
><LI
><P
>
- What constitutes a <SPAN
-CLASS="QUOTE"
->"default"</SPAN
-> configuration has changed,
- and you may want to review which actions are <SPAN
-CLASS="QUOTE"
->"on"</SPAN
-> by
- default. This is primarily a matter of emphasis, but some features
- you may have been used to, may now be <SPAN
-CLASS="QUOTE"
->"off"</SPAN
-> by default.
- There are also a number of new actions and filters you may want to
- consider, most of which are not fully incorporated into the default
- settings as yet (see above).
+ On the other hand, other installers don't overwrite existing configuration
+ files, thinking you will want to do that yourself.
</P
></LI
><LI
><P
-> The default actions setting is now <TT
-CLASS="LITERAL"
->Cautious</TT
->. Previous
- releases had a default setting of <TT
-CLASS="LITERAL"
->Medium</TT
->. Experienced
- users may want to adjust this, as it is fairly conservative by <SPAN
-CLASS="APPLICATION"
->Privoxy</SPAN
->
- standards and past practices. See <A
-HREF="http://config.privoxy.org/edit-actions-list?f=default"
-TARGET="_top"
-> http://config.privoxy.org/edit-actions-list?f=default</A
->. New users
- should try the default settings for a while before turning up the volume.
- </P
-></LI
-><LI
-><P
-> The default setting has filtering turned <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->off</I
-></SPAN
->, which
- subsequently means that compression is <SPAN
-CLASS="emphasis"
-><I
-CLASS="EMPHASIS"
->on</I
-></SPAN
->. Remember
- that filtering does not work on compressed pages, so if you use, or want to
- use, filtering, you will need to force compression off. Example:
- </P
-><P
-> <TABLE
-BORDER="0"
-BGCOLOR="#E0E0E0"
-WIDTH="90%"
-><TR
-><TD
-><PRE
-CLASS="SCREEN"
-> { +<A
-HREF="actions-file.html#FILTER"
->filter</A
->{google} +<A
-HREF="actions-file.html#PREVENT-COMPRESSION"
->prevent-compression</A
-> }
- .google.</PRE
-></TD
-></TR
-></TABLE
->
- </P
-><P
-> Or if you use a number of filters, or filter many sites, you may just want
- to turn off compression for all sites in
- <TT
-CLASS="FILENAME"
->default.action</TT
-> (or
- <TT
+>
+ <TT
CLASS="FILENAME"
->user.action</TT
->).
- </P
-></LI
-><LI
-><P
-> Also, <A
-HREF="actions-file.html#SESSION-COOKIES-ONLY"
->session-cookies-only</A
-> is
- off by default now. If you've liked this feature in the past, you may want
- to turn it back on in <TT
+>standard.action</TT
+> has been merged into
+ the <TT
CLASS="FILENAME"
->user.action</TT
-> now.
+>default.action</TT
+> file.
</P
></LI
><LI
><P
->
- Some installers may not automatically start
- <SPAN
+> In the default configuration only fatal errors are logged now.
+ You can change that in the <A
+HREF="config.html#DEBUG"
+>debug section</A
+>
+ of the configuration file. You may also want to enable more verbose
+ logging until you verified that the new <SPAN
CLASS="APPLICATION"
>Privoxy</SPAN
-> after installation.
+> version is working
+ as expected.
</P
></LI
+><LI
+><P
+> Three other config file settings are now off by default:
+ <A
+HREF="config.html#ENABLE-REMOTE-TOGGLE"
+>enable-remote-toggle</A
+>,
+ <A
+HREF="config.html#ENABLE-REMOTE-HTTP-TOGGLE"
+>enable-remote-http-toggle</A
+>,
+ and <A
+HREF="config.html#ENABLE-EDIT-ACTIONS"
+>enable-edit-actions</A
+>.
+ If you use or want these, you will need to explicitly enable them, and
+ be aware of the security issues involved.
+ </P
+></LI
></UL
></P
></DIV
></DIV
></BODY
></HTML
->
\ No newline at end of file
+>
projects / privoxy.git / blobdiff