NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
REL="HOME"
-TITLE="Privoxy 3.0.9 User Manual"
+TITLE="Privoxy 3.0.16 User Manual"
HREF="index.html"><LINK
REL="PREVIOUS"
TITLE="Installation"
><TH
COLSPAN="3"
ALIGN="center"
->Privoxy 3.0.9 User Manual</TH
+>Privoxy 3.0.16 User Manual</TH
></TR
><TR
><TD
>3. What's New in this Release</A
></H1
><P
-> There are many improvements and new features since <SPAN
+> <SPAN
CLASS="APPLICATION"
->Privoxy 3.0.8</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
-> Added SOCKS5 support (with address resolution done by
- the SOCKS5 server). Patch provided by Eric M. Hopper.
+> 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
-> The "blocked" CGI pages include a block reason that was
- provided as argument to the last-applying block action.
+> 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
-> If enable-edit-actions is disabled (the default since 3.0.7 beta)
- the show-status page hides the edit buttons and explains why.
- Previously the user would get the "this feature has been disabled"
- message after using the edit button.
+> Added optional support for FreeBSD's accf_http(9). Use the
+ configure option --enable-accept-filter to enable it.
</P
></LI
><LI
><P
-> Forbidden CONNECT requests are treated like blocks by default.
- The now-pointless treat-forbidden-connects-like-blocks action
- has been removed.
+> Added fancier Privoxy icons for win32. Contributed by Jeff H.
</P
></LI
><LI
><P
-> Not enabling limit-connect now allows CONNECT requests to all ports.
- In previous versions it would only allow CONNECT requests to port 443.
- Use +limit-connect{443} if you think you need the old default behaviour.
+> In daemon mode, fd 0, 1 and 2 are bound to /dev/null.
</P
></LI
><LI
><P
-> The CGI editor gets turned off after three edit requests with invalid
- file modification timestamps. This makes life harder for attackers
- who can leverage browser bugs to send fake Referers and intend to
- brute-force edit URLs.
+> 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
-> Action settings for multiple patterns in the same section are
- shared in memory. As a result these sections take up less space
- (and are loaded slightly faster). Problem reported by Franz Schwartau.
+> 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
-> Linear white space in HTTP headers will be normalized to single
- spaces before parsing the header's content, headers split across
- multiple lines get merged first.
+> 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
-> Host information is gathered outside the main thread so it's less
- likely to delay other incoming connections if the host is misconfigured.
+> 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
-> New config option "hostname" to use a hostname other than
- the one returned by the operating system. Useful to speed-up responses
- for CGI requests on misconfigured systems. Requested by Max Khon.
+> Accepts quoted expiration dates even though RFC 2109 10.1.2
+ doesn't seem to allow them. Reported anonymously.
</P
></LI
><LI
><P
-> The CGI editor supports the "disable all filters of this type"
- directives "-client-header-filter", "-server-header-filter",
- "-client-header-tagger" and "-server-header-tagger".
+> 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
-> Fixed false-positives with the link-by-url filter and URLs that
- contain the pattern "/jump/".
+> The still undocumented --enable-extended-host-patterns configure
+ option has a better description.
</P
></LI
><LI
><P
-> The less-download-windows filter no longer messes
- "Content-Type: application/x-shockwave-flash" headers up.
+> Fixed an error message that would claim a write to the server
+ failed when actually writing to the client failed.
</P
></LI
><LI
><P
-> In the show-url-info page's "Final results" section active and
- inactive actions are listed separately. Patch provided by Lee.
+> Log the crunch reason before trying to write to the client.
+ The log is easier to read that way.
</P
></LI
><LI
><P
-> The GNUmakefile supports the DESTDIR variable. Patch for
- the install target submitted by Radoslaw Zielinski.
+> Several log messages about client connections also mention
+ the socket number.
</P
></LI
><LI
><P
-> Embedding the content of configuration files in the show-status
- page is significantly faster now. For a largish action file (1 MB)
- a speedup of about 2450 times has been measured. This is mostly
- interesting if you are using large action files or regularly use
- Privoxy-Regression-Test while running Privoxy through Valgrind,
- for stock configuration files it doesn't really matter.
+> handle-as-empty-document no longer depends on the image blocking
+ code being enabled.
</P
></LI
><LI
><P
-> If zlib support is unavailable and there are content
- filters active but the prevent-compression action is disabled,
- the show-url-info page includes a warning that compression
- might prevent filtering.
+> Privoxy-Log-Parser is roughly 40% faster in highlighting mode.
</P
></LI
><LI
><P
-> The show-url-info page provides an OpenSearch Description that
- allows to access the page through browser search plugins.
+> 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 obsolete kill-popups action has been removed as the
- PCRS-based popup filters can do the same and are slightly
- less unreliable.
+> 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
+> 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
+> Added client-side keep-alive support.
+ </P
+></LI
+><LI
+><P
+> The connection sharing code is only used if the connection-sharing
+ option is enabled.
+ </P
+></LI
+><LI
+><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
+> 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
+> 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
+> 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
+> 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
+> Fixed a crash on some Windows versions when header randomization
+ is enabled and the date couldn't be parsed.
+ </P
+></LI
+><LI
+><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
-> The inspect-jpegs action has been removed.
+> 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
-> The send-wafer and send-vanilla-wafer actions have been removed.
- They weren't particular useful and their behaviour could be emulated
- with add-header anyway.
+> If the socket isn't reusable, Privoxy doesn't temporarily waste
+ a socket slot to remember the connection.
</P
></LI
><LI
><P
-> Privoxy-Regression-Test has been significantly improved.
+> If keep-alive support is disabled but compiled in, the client's
+ Keep-Alive header is removed.
</P
></LI
><LI
><P
-> Most sections in the default.action file contain tests for
- Privoxy-Regression-Test to verify that they are working as intended.
+> Fixed a bug on mingw32 where downloading large files failed if
+ keep-alive support was enabled.
</P
></LI
><LI
><P
-> Parts of Privoxy have been refactored to increase maintainability.
+> Fixed a bug that (at least theoretically) could cause log
+ timestamps to be occasionally off by about a second.
</P
></LI
><LI
><P
-> Building with zlib (if available) is done by default.
+> The configure script respects the $PATH variable when searching
+ for groups and id.
+ </P
+></LI
+><LI
+><P
+> 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
+> 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
+> Error messages in case of connection timeouts use the right
+ HTTP status code.
+ </P
+></LI
+><LI
+><P
+> 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
+> The error messages in case of server-connection timeouts or
+ prematurely closed server connections are now template-based.
+ </P
+></LI
+><LI
+><P
+> 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 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
></P
-><P
-> For a more detailed list of changes please have a look at the ChangeLog.</P
><DIV
CLASS="SECT2"
><H2
<TT
CLASS="FILENAME"
>standard.action</TT
-> now only includes the enabled actions.
- Not all actions as before.
+> has been merged into
+ the <TT
+CLASS="FILENAME"
+>default.action</TT
+> file.
</P
></LI
><LI
be aware of the security issues involved.
</P
></LI
-><LI
-><P
-> The <SPAN
-CLASS="QUOTE"
->"filter-client-headers"</SPAN
-> and
- <SPAN
-CLASS="QUOTE"
->"filter-server-headers"</SPAN
-> actions that were introduced with
- <SPAN
-CLASS="APPLICATION"
->Privoxy 3.0.5</SPAN
-> to apply content filters to
- the headers have been removed and replaced with new actions.
- See the <A
-HREF="whatsnew.html"
->What's New section</A
-> above.
- </P
-></LI
></UL
></P
></DIV
></DIV
></BODY
></HTML
->
\ No newline at end of file
+>
projects / privoxy.git / blobdiff