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Changes with Apache 2.1.0-dev

  [Remove entries to the current 2.0 section below, when backported]
  *) mod_ssl: Fix segfaults after renegotiation failure. PR 21370
     [Hartmut Keil <Hartmut.Keil@adnovum.ch>]

  *) ab: Overlong credentials given via command line no longer clobber
     the buffer. [André Malo]

  *) mod_rewrite: Ignore RewriteRules in .htaccess files if the directory
     containing the .htaccess file is requested without a trailing slash.
     PR 20195.  [André Malo]

  *) mod_autoindex: If a directory contains a file listed in the
     DirectoryIndex directive, the folder icon is no longer replaced
     by the icon of that file. PR 9587.
     [David Shane Holden <dpejesh@yahoo.com>] 

  *) mod_authz_groupfile: Strip trailing spaces of group names. This
     hopefully saves some hours of searching for typos. PR 12863.
     [André Malo]

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  *) Remove an extra bit of unnecessary code from the recently
     committed fix for PR 13946 (in mod_rewrite). Reported by
     Andre Malo. [Paul J. Reder]

  *) mod_ssl: Fix a problem setting variables that represent the
     client certificate chain.  PR 21397  [Jeff Trawick]

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  *) mod_rewrite: fix a problem in the proxy support of mod_rewrite.
     The broken code was inserting multiple "proxy:" fields in the
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     rewritten URIs. [PR: 13946]
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     [Submitted by:  Eider Oliveira <eider@bol.com.br>]
     [Updated and reviewed by: Paul J. Reder]

  *) mod_actions: Propagate the handler name to the action script via
     the REDIRECT_HANDLER environment variable.  [André Malo]

  *) mod_actions: Introduce the "virtual" modifier to the Action directive,
     which allows the use of handlers for virtual locations. PR 8431.
     [André Malo]

  *) mod_speling: Recognize AcceptPathInfo setting for the particular
     location. Default is to reject path information. PR 21059.
     [André Malo]

  *) mod_ext_filter: Add the ability to filter request bodies.
     [Philipp Reisner <philipp.reisner@linbit.com>]

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  *) Correct the code in ap_check_cache_feshness to check max_age,
     smax_age, and expires correctly. Patch submitted by Thomas
     Castelle [Paul J. Reder]

  *) mod_cgid: Restart the cgid daemon if it crashes.  PR 19849
     [Glenn Nielsen <glenn@apache.org>]

  *) Unix: Handle permissions settings for flock-based mutexes in 
     unixd_set_global|proc_mutex_perms().  Allow the functions to be
     called for any type of mutex.  PR 20312  [Jeff Trawick]

  *) Fix some broken log messages in WinNT MPM.  
     [Juan Rivera <Juan.Rivera@citrix.com>]

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  *) Add support for IMT minor-type wildcards (e.g., text/*) to
     ExpiresByType.  PR#7991  [Ken Coar]

  *) mod_rewrite: Fix LA-U variable look ahead which didn't work correctly
     in directory context. Related to PR 8493.  [André Malo]

  *) Ensure that ssl-std.conf is generated at configure time, and switch
     to using the expanded config variables to work the same as
     httpd-std.conf PR 19611
     [Thom May]
  *) Fix a problem with namespace mappings being dropped in mod_dav_fs; 
     if any property values were set which defined namespaces these 
     came out mangled in the PROPFIND response.  PR 11637.
     [Amit Athavale <amit_athavale@persistent.co.in>]

  *) prefork MPM: Use the right permissions for the directory created 
     for gprof support.  [Jim Carlson <jcarlson@jnous.com>]

  *) Fix the inability to log errors like exec failure in
     mod_ext_filter/mod_cgi script children.  This was broken after 
     such children stopped inheriting the error log handle.  
     [Jeff Trawick]
  *) Fix a compile failure with recent OpenSSL and picky compilers
     (e.g., OpenSSL 0.9.7a and xlc_r on AIX).  [Jeff Trawick]

  *) OpenSSL headers should be included as "openssl/ssl.h", and not rely on
     the INCLUDE path to be defined properly.
     PR 11310. [Geoff Thrope <geoff@geoffthorpe.net>]

  *) Modify APACHE_CHECK_SSL_TOOLKIT to detect SSL-C. [Madhusudan Mathihalli]
  *) Replace the APACHE_CHECK_SSL_TOOLKIT method with a cleaner one, using
     autoconf tools (AC_CHECK_HEADER, AC_CHECK_LIB etc). 
     [Geoff Thorpe <geoff@geoffthorpe.net>]

  *) change directive name from 'compressionlevel' to 'deflatecompressionlevel'
  *) mod_negotiation: quality values are now parsed independent from
     the current locale. level values are now really parsed as integers.
     PR 17564.  [André Malo]

  *) Added the WindowsSocketsWorkaround directive for Windows NT/2000/XP
     to work around problems with certain VPN and Firewall products that 
     have buggy AcceptEx implementations.
     [Allan Edwards w/ suggestions from Bill Stoddard & Bill Rowe]

  *) Extend mod_negotiation to evaluate the environment variables
     no-gzip and gzip-only-text/html the same way as mod_deflate does.
     [André Malo]

  *) mod_rewrite: Fix some problems reporting errors with mapping
     programs (RewriteMap prg:/something).  [Jeff Trawick]

  *) Return 413 if chunk-ext-header is too long rather than reading from
     the truncated line.  PR 15857.  [Justin Erenkrantz]

  *) Allow restart of httpd to occur even with syntax errors in the config
     file.  PR 16813.  [Justin Erenkrantz]

  *) Use APR_LAYOUT instead of APACHE_LAYOUT in configure.  PR 15679.
     [Justin Erenkrantz]

  *) Remove files on 'make distclean' that should be.  PR 15592.
     [Justin Erenkrantz]

  *) Allow apachectl to perform status with links and elinks as well.
     [Justin Erenkrantz]

  *) Extend the SetEnvIf directive to capture subexpressions of the
     matched value.  [André Malo]

  *) mod_log_config change optional hook to return previous handler
     [Ian Holsman]

  *) Forward port of mod_actions' ability to handle arbitrary methods
     with the Script directive.  [André Malo]

  *) Let suexec send a message to stderr, if it failed or its policy
     was violated. This message appears in the error log and allows
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     for easier debugging. PR 5381, 7638, 8255, 10773.  [André Malo]
  *) Modify buildconf to copy all required files into httpd's tree.
     [Thom May <thom@planetarytramp.net>]

  *) Allow mod_dav to do weak entity comparison functions.
     [Justin Erenkrantz]

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  *) Move RFC 1413 ident requests from core to new module mod_ident.
     [André Malo]

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  *) Add mod_authz_owner - a forward port of "Require file-owner"
     and "Require file-group", which was already present in version
     1.3.21.  [André Malo]

  *) Add mod_dav_lock - a generic subset of the DAV locking implementation.
     [Justin Erenkrantz]

  *) Replace some of the mutex locking in the worker MPM with
     atomic operations for higher concurrency.  [Brian Pane]

  *) Allow 'make depend' to work with non-GCC compilers.
     [Justin Erenkrantz]

  *) If an httpd.conf has commented out AddModule directives, 
     apxs -i -a will add an un-commented AddModule directive for 
     the new module, which breaks the config.
     PR: 11212 [Joe Orton]
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  *) Fix mod_proxy handling of filtered input bodies.  [Justin Erenkrantz]

  *) Move the check of the Expect request header field after the hook
     for ap_post_read_request, since that is the only opportunity for
     modules to handle Expect extensions.  [Justin Erenkrantz]

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  *) Rewrite of aaa modules to an authn/authz model.
     [Dirk-Willem van Gulik, Justin Erenkrantz]

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  [Apache 2.1.0-dev includes those bug fixes and changes with the
   Apache 2.0.xx tree as documented, and except as noted, below.]

Changes with Apache 2.0.48

  *) mod_deflate: Don't attempt to hold all of the response until we're
     done.  [Justin Erenkrantz]

  *) Assure that we block properly when reading input bodies with SSL.
     PR 19242.  [David Deaves <David.Deaves@dd.id.au>, William Rowe]

  *) Update mime.types to include latest IANA and W3C types.  [Roy Fielding]

  *) mod_ext_filter: Set additional environment variables for use by
     the external filter.  PR 20944.  [Andrew Ho, Jeff Trawick]

  *) Fix buildconf errors when libtool version changes.  [Jeff Trawick]

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  *) Remember an authenticated user during internal redirects if the
     redirection target is not access protected and pass it
     to scripts using the REDIRECT_REMOTE_USER environment variable.
     PR 10678, 11602.  [André Malo]

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  *) mod_include: Fix a trio of bugs that would cause various unusual
     sequences of parsed bytes to omit portions of the output stream.
     PR 21095. [Ron Park <ronald.park@cnet.com>, André Malo, Cliff Woolley]

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  *) Update the header token parsing code to allow LWS between the
     token word and the ':' seperator.  [PR 16520]
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     [Kris Verbeeck <kris.verbeeck@advalvas.be>,Nicel KM <mnicel@yahoo.com>]
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  *) Eliminate creation of a temporary table in ap_get_mime_headers_core()
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     [Joe Schaefer <joe+gmane@sunstarsys.com>]
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  *) Added FreeBSD directory layout. PR 21100.
     [Sander Holthaus <info@orangexl.com>, André Malo]

  *) Fix NULL-pointer issue in ab when parsing an incomplete or non-HTTP
     response. PR 21085. [Glenn Nielsen <glenn@apache.org>, André Malo]

  *) mod_rewrite: Perform child initialization on the rewrite log lock.
     This fixes a log corruption issue when flock-based serialization
     is used (e.g., FreeBSD).  [Jeff Trawick]

  *) Don't respect the Server header field as set by modules and CGIs.
     As with 1.3, for proxy requests any such field is from the origin 
     server; otherwise it will have our server info as controlled by
     the ServerTokens directive.  [Jeff Trawick]

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Changes with Apache 2.0.47
  *) SECURITY [CAN-2003-0192]: Fixed a bug whereby certain sequences
     of per-directory renegotiations and the SSLCipherSuite directive
     being used to upgrade from a weak ciphersuite to a strong one
     could result in the weak ciphersuite being used in place of the
     strong one.  [Ben Laurie]

  *) SECURITY [CAN-2003-0253]: Fixed a bug in prefork MPM causing
     temporary denial of service when accept() on a rarely accessed port
     returns certain errors.  Reported by Saheed Akhtar
     <S.Akhtar@talis.com>.  [Jeff Trawick]

  *) SECURITY [CAN-2003-0254]: Fixed a bug in ftp proxy causing denial
     of service when target host is IPv6 but proxy server can't create
     IPv6 socket.  Fixed by the reporter.  [Yoshioka Tsuneo
     <tsuneo.yoshioka@f-secure.com>]

  *) SECURITY [VU#379828] Prevent the server from crashing when entering
     infinite loops. The new LimitInternalRecursion directive configures
     limits of subsequent internal redirects and nested subrequests, after
     which the request will be aborted.  PR 19753 (and probably others).
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     [William Rowe, Jeff Trawick, André Malo]

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  *) core_output_filter: don't split the brigade after a FLUSH bucket if
     it's the last bucket.  This prevents creating unneccessary empty
     brigades which may not be destroyed until the end of a keepalive
     connection.
     [Juan Rivera <Juan.Rivera@citrix.com>]

  *) Add support for "streamy" PROPFIND responses.
     [Ben Collins-Sussman <sussman@collab.net>]

  *) mod_cgid: Eliminate a double-close of a socket.  This resolves
     various operational problems in a threaded MPM, since on the
     second attempt to close the socket, the same descriptor was
     often already in use by another thread for another purpose.
     [Jeff Trawick]

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  *) mod_negotiation: Introduce "prefer-language" environment variable,
     which allows to influence the negotiation process on request basis
     to prefer a certain language.  [André Malo]

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  *) Make mod_expires' ExpiresByType work properly, including for
     dynamically-generated documents.  [Ken Coar, Bill Stoddard]
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Changes with Apache 2.0.46

  *) SECURITY [CAN-2003-0245]: Fixed a bug causing apr_pvsprintf() to crash 
     by sending an overly long string.  This can be triggered remotely 
     through mod_dav, mod_ssl, and other mechanisms.  Reported by David
     Endler <DEndler@iDefense.com>.
     [Joe Orton <jorton@redhat.com>]

  *) SECURITY [CAN-2003-0189]: Fixed a denial-of-service vulnerability
     affecting basic authentication on Unix platforms related to
     thread-safety in apr_password_validate().  The problem was reported
     by John Hughes <john.hughes@entegrity.com>.

  *) Fix for mod_dav.  Call the 'can_be_activity' callback, if provided,
     when a MKACTIVITY request comes in.
     [Ben Collins-Sussman <sussman@collab.net>]

  *) Perform run-time query in apxs for apr and apr-util's includes.
     [Justin Erenkrantz]

  *) run libtool from the apr install directory (in case that is different
     from the apache install directory) [Jeff Trawick]

  *) configure.in: Play nice with libtool-1.5. [Wilfredo Sanchez]

  *) If mod_mime_magic does not know the content-type, do not attempt to
     guess.  PR 16908.  [Andrew Gapon <agapon@telcordia.com>]

  *) ssl session caching(shmht) : Fix a SEGV problem with SHMHT session
     caching. PR 17864.
     [Andreas Leimbacher <andreasl67@yahoo.de>, Madhusudan Mathihalli]

  *) Add a delete flag to htpasswd.
     [Thom May]

  *) Fix mod_rewrite's handling of absolute URIs. The escaping routines
     now work scheme dependent and the query string will only be
     appended if supported by the particular scheme.  [André Malo]

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  *) Add another check for already compressed content in mod_deflate.
     PR 19913. [Tsuyoshi SASAMOTO <nazonazo@super.win.ne.jp>]

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  *) Fixes for VPATH builds; copying special.mk and any future .mk files 
     from the source tree as well as the build tree (now creates a usable
     configuration for apxs), and eliminated redundant -I'nclude paths.
     [William Rowe]

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  *) Code fixes, constness corrections and ssl_toolkit_compat.h updates
     for SSLC and OpenSSL toolkit compatibility.  Still work remains to
     be done to cripple features based on the limitations of RSA's binary 
     distribution of their SSL-C toolkit.
     [William Rowe, Madhusudan Mathihalli, Jeff Trawick]

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  *) Linux 2.4+: If Apache is started as root and you code 
     CoreDumpDirectory, coredumps are enabled via the prctl() syscall.
     [Greg Ames]

  *) ap_get_mime_headers_core: allocate space for the trailing null
     when folding is in effect.
     PR 18170 [Peter Mayne <PeterMayne@SPAM_SUX.ap.spherion.com>]

  *) Fix --enable-mods-shared=most and other variants.  [Aaron Bannert]

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  *) mod_log_config: Add the ability to log the id of the thread 
     processing the request via new %P formats.  [Jeff Trawick]

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  *) Use appropriate language codes for Czech (cs) and Traditional Chinese
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     (zh-tw) in default config files. PR 9427.  [André Malo]

  *) mod_auth_ldap: Use generic whitespace character class when parsing
     "require" directives, instead of literal spaces only. PR 17135.
     [André Malo]

  *) Hook mod_rewrite's type checker before mod_mime's one. That way the
     RewriteRule [T=...] Flag should work as expected now. PR 19626.
     [André Malo]

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  *) htpasswd: Check the processed file on validity. If a line is not empty
     and not a comment, it must contain at least one colon. Otherwise exit
     with error code 7. [Kris Verbeeck <Kris.Verbeeck@ubizen.com>, Thom May]

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  *) Fix a problem that caused httpd to be linked with incorrect flags
     on some platforms when mod_so was enabled by default, breaking 
     DSOs on AIX.  PR 19012  [Jeff Trawick]

  *) By default, use the same CC and CPP with which APR was built.
     The user can override with CC and CPP environment variables.
     [Jeff Trawick]

  *) Fix ap_construct_url() so that it surrounds IPv6 literal address
     strings with [].  This fixes certain types of redirection.
     PR 19207.  [Jeff Trawick]

  *) forward port of buffer overflow fixes for htdigest. [Thom May]

  *) Added AllowEncodedSlashes directive to permit control of whether
     the server will accept encoded slashes ('%2f') in the URI path.
     Default condition is off (the historical behaviour).  This permits
     environments in which the path-info needs to contain encoded
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     slashes.  PR 543, 2389, 3581, 3589, 5687, 7066, 7865, 14639.  [Ken Coar]
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  *) When using Redirect in directory context, append requested query
     string if there's no one supplied by configuration. PR 10961.
     [André Malo]

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  *) Unescape the supplied wildcard pattern in mod_autoindex. Otherwise
     the pattern will not always match as desired. PR 12596.
     [André Malo]

  *) mod_autoindex now emits and accepts modern query string parameter
     delimiters (;). Thus column headers no longer contain unescaped
     ampersands. PR 10880  [André Malo]

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  *) Enable ap_sock_disable_nagle for Windows. This along with the 
     addition of APR_TCP_NODELAY_INHERITED to apr.hw will cause Nagle 
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  *) Correct a mis-correlation between mpm_common.c and mpm_common.h;
     This patch reverts us to pre-2.0.46 behavior, using the 
     ap_sock_disable_nagle noop macro, because ap_sock_disable_nagle 
     was never compiled on Win32. [Allan Edwards, William Rowe]

  *) Fix a build problem with passing unsupported --enable-layout
     args to apr and apr-util.  This broke binbuild.sh as well as
     user-specified layout parameters.  PR 18649 [Justin Erenkrantz,
     Jeff Trawick]

  *) If a Date response header was already set in the headers array,
     this value was ignored in favour of the current time. This meant
     that Date headers on proxied requests where rewritten when they
     should not have been. PR: 14376 [Graham Leggett]

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  *) Add code to buildconf that produces an httpd.spec file from
     httpd.spec.in, using build/get-version.sh from APR.
     [Graham Leggett]

  *) Fixed a segfault when multiple ProxyBlock directives were used.
     PR: 19023 [Sami Tikka <sami.tikka@f-secure.com>]

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  *) SECURITY [CAN-2003-0134] OS2: Fix a Denial of Service vulnerability 
     identified and reported by Robert Howard <rihoward@rawbw.com> that 
     where device names faulted the running OS2 worker process.
     The fix is actually in APR 0.9.4.  [Brian Havard]

  *) Forward port: Escape special characters (especially control
     characters) in mod_log_config to make a clear distinction between
     client-supplied strings (with special characters) and server-side
     strings. This was already introduced in version 1.3.25.
     [André Malo]

  *) mod_deflate: Check also err_headers_out for an already set
     Content-Encoding: gzip header. This prevents gzip compressed content
     from a CGI script from being compressed once more. PR 17797.
     [André Malo]

Changes with Apache 2.0.45
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  *) Fix possible segfaults under obscure error conditions within the
     cgid daemon.  [Jeff Trawick, William Rowe]

  *) SECURITY [CAN-2003-0132]: Close a Denial of Service vulnerability
     identified by David Endler <DEndler@iDefense.com> on all platforms.
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     An unlimited stream of newlines were acceptable between requests
     where each <lf> would allocate an 80 byte buffer, leading very
     quickly to memory exahustion.  [Brian Pane]
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  *) Added an rpm build script.
     [Graham Leggett, Joe Orton <jorton@redhat.com>]

  *) Simpler, faster code path for request header scanning  [Brian Pane]

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  *) SECURITY:  Eliminated leaks of several file descriptors to child
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     processes, such as CGI scripts.  This fix depends on the APR library 
     release 0.9.2 or later (0.9.3 was distributed with the httpd 
     source tarball for Apache 2.0.45.)  PR 17206
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     [Christian Kratzer <ck@cksoft.de>, Bjoern A. Zeeb <bz@zabbadoz.net>]

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  *) Fix path handling of mod_rewrite, especially on non-unix systems.
     There was some confusion between local paths and URL paths.
     PR 12902.  [André Malo]

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  *) Prevent endless loops of internal redirects in mod_rewrite by
     aborting after exceeding a limit of internal redirects. The
     limit defaults to 10 and can be changed using the RewriteOptions
     directive. PR 17462.  [André Malo]

  *) Win32: Avoid busy wait (consuming all the CPU idle cycles) when
     all worker threads are busy. 
     [Igor Nazarenko <igor_nazarenko@hotmail.com>]
  *) Keep the subrequest filter in place when a subrequest is 
     redirected.  PR 15423.  [Jeff Trawick]

  *) you can now specify the compression level for mod_deflate. 
     [Ian Holsman, Stephen Pierzchala <stephen@pierzchala.com>, 
     Michael Schroepl <Michael.Schroepl@telekurs.de>]

  *) mod_deflate: Extend the DeflateFilterNote directive to
     allow accurate logging of the filter's in- and outstream.
     [André Malo]

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  *) Allow SSLMutex to select/use the full range of APR locking
     mechanisms available to it. Also, fix the bug that SSLMutex uses
     APR_LOCK_DEFAULT no matter what.  PR 8122  [Jim Jagielski,
     martin.t.kutschker@blackbox.net (Martin Kutschker)]

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  *) Restore the ability of htdigest.exe to create files that contain
     more than one user. PR 12910.  [André Malo]

  *) Improve binary compatibility of the core between debug (aka
     maintainer-mode) and a non-debug compile.
     [Sander Striker]

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  *) mod_usertrack: don't set the cookie in subrequests. This works
     around the problem that cookies were set twice during fast internal
     redirects. PR 13211.  [André Malo]

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  *) mod_autoindex no longer forgets output format and enabled version
     sort in linked column headers.  [André Malo]

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  *) Use .sv instead of .se as extension for Swedish documents in the
     default configuration. PR 12877.  [André Malo]

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  *) Updated mod_ldap and mod_auth_ldap to support the Novell LDAP SDK SSL
     and standardized the LDAP SSL support across the various LDAP SDKs.  
     Isolated the SSL functionality to mod_ldap rather than speading it 
     across mod_auth_ldap and mod_ldap.  Also added LDAPTrustedCA
     and LDAPTrustedCAType directives to mod_ldap to allow for a more 
     common method of specifying the SSL certificate.
     [Dave Ward, Brad Nicholes]

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  *) Fixed mod_ssl's SSLCertificateChain initialization to no longer 
     skip the first cert of the chain by default.  This misbehavior 
     was introduced in 2.0.34.  PR 14560  [Madhusudan Mathihalli]

  *) mod_cgi, mod_cgid, mod_ext_filter: Log errors when scripts cannot
     be started on Unix because of such problems as bad permissions,
     bad shebang line, etc.  [Jeff Trawick]

  *) Fix 64-bit problem in mod_ssl input logic.  
     [Madhusudan Mathihalli <madhusudan_mathihalli@hp.com>]

  *) Fix potential memory leaks in mod_deflate on malformed data.  PR 16046.
     [Justin Erenkrantz]

  *) Rewrite ap_xml_parse_input to use bucket brigades.  PR 16134.
     [Justin Erenkrantz]

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  *) Fix segfault which occurred when a section in an included
     configuration file was not closed. PR 17093.  [André Malo]

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  *) Enhance the behavior of mod_isapi's WriteClient() callback to
     provide better emulation for isapi modules that presume that the
     first WriteClient() call may send status and headers.  An example
     of WriteClient() abuse is the foxisapi module, which relies on
     that assumpion and now works.  [William Rowe, Milan Kosina]

  *) Check the return value of ap_run_pre_connection(). So if the
     pre_connection phase fails (without setting c->aborted)
     ap_run_process_connection is not executed. [Stas Bekman]

  *) Fixed a problem with mod_ldap which caused it to fault when caching
     was disabled.  Needed to make sure that the code did not
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     attempt to use the cache if it didn't exist. Also fixed some memory
     leaks which were due to not releasing LDAP resources on error
     conditions.  [Brad Nicholes]
  *) Hook mod_proxy's fixup before mod_rewrite's fixup, so that by
     mod_rewrite proxied URLs will not be escaped accidentally by
     mod_proxy's fixup. PR 16368  [André Malo]

  *) While processing filters on internal redirects, remember seen EOS
     buckets also in the request structure of the redirect issuer(s). This
     prevents filters (such as mod_deflate) from adding garbage to the
     response. PR 14451.  [André Malo]

  *) suexec: Be more pedantic when cleaning environment. Clean it
     immediately after startup. PR 2790, 10449.
     [Jeff Stewart <jws@purdue.edu>, André Malo]

  *) Fix apxs to insert LoadModule directives only outside of sections.
     PR 8712, 9012.  [André Malo]

  *) Fix suexec compile error under SUNOS4, where strerror() doesn't
     exist. PR 5913, 9977.
     [Jonathan W Miner <Jonathan.W.Miner@lmco.com>]

  *) Fix If header parsing when a non-mod_dav lock token is passed to it.
     PR 16452.  [Justin Erenkrantz]

  *) mod_auth_digest no longer tries to guess AuthDigestDomain, if it's
     not specified. Now it assumes "/" as already documented. PR 16937.
     [André Malo]

  *) Try to log an error if a piped log program fails.  Try to
     restart a piped log program in more failure situations.  Fix an
     existing problem with error handling in piped_log_spawn().  Use
     new APR apr_proc_create() features to prevent Apache from starting
     on Unix* in most cases where a piped log program can be started,
     and add log messages for the other situations.  *Other platforms
     already failed Apache initialization if a piped log program
     couldn't be started.  PR 15761  [Jeff Trawick]

  *) Fix mod_cern_meta to not create empty metafiles when the
     metafile searched for does not exist.  PR 12353
     [Owen Rees <owen_rees@hp.com>]

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  *) Introduce debugging symbols for Win32 release builds, both .pdb 
     and .dbg files (older debuggers and Dr. Watson-type utilities 
     on WinNT or Win9x don't support the newer .pdb flavor.)
     [Allen Edwards, William Rowe]
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  *) Fix bug where 'Satisfy Any' without an AuthType lost all MIME
     information (and more). Related to PR 9076.  [André Malo]

  *) mod_file_cache: fix segfault serving mmaped cached files.
     [Bill Stoddard]

  *) mod_file_cache: fixed a segfault when multiple MMapFile directives
     were used.  PR 16313.  [Cliff Woolley]
  *) Fix a nasty segfault in mmap_bucket_setaside() caused by passing
     an incompatible pointer type to mmap_bucket_destroy(void*).
     [Gerard Eviston <geviston@bigpond.net.au>]

  *) Enable the -n name parameter on NetWare to allow the
     administrator to rename the Apache console screen
     [Brad Nicholes]
     
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  *) Fixed piped access logs on Win32 by disabling OTHER_CHILD
     support by default in APR.  More development is required
     to deploy OTHER_CHILD on Win32.  [William Rowe]

  *) Use saner default config values for suexec. PR 15713.
     [Thom May <thom@planetarytramp.net>]

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  *) mod_rewrite: Allow "RewriteEngine Off" even if no "Options FollowSymlinks"
     (or SymlinksIfOwnermatch) is set. PR 12395.  [André Malo]

  *) apxs: Include any special APR ld flags when linking the DSO.
     This resolves problems on AIX when building a DSO with apxs+gcc.
     [Jeff Trawick]

  *) Added character set support to mod_auth_LDAP to allow it to 
     convert extended characters used in the user ID to UTF-8 
     before authenticating against the LDAP directory. The new
     directive AuthLDAPCharsetConfig is used to specify the config
     file that contains the character set conversion table.
     [Brad Nicholes]
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  *) Don't remove the Content-Length from responses in mod_proxy
     PR: 8677 [Brian Pane]

  *) Ensure LDAP version is set to v3 on every bind. PR 14235.
     [Sergey A. Lipnevich <sergeyli@pisem.net>]

  *) Fix mod_ldap to open an existing shared memory file should one
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     already exist. PR 12757. [Scooter Morris <scooter@gene.com>,
  *) Fix the ulimit command used by apachectl on Tru64.  PR 13609.
     [Joseph Senulis <Joseph.Senulis@dnr.state.wi.us>, Jeff Trawick]

  *) Change the ulimit command used by apachectl on AIX so that it
     works in all locales.  [Jeff Trawick]

  *) mod_ext_filter: Fix a problem building argument lists which 
     occasionally caused exec to fail.  PR 15491.  [Jeff Trawick]

Changes with Apache 2.0.44

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  *) mod_autoindex: Bring forward the IndexOptions IgnoreCase option
     from Apache 1.3.  PR 14276
     [David Shane Holden <dpejesh@yahoo.com>, William Rowe]

  *) mod_mime: Workaround to prevent a segfault if r->filename=NULL
     [Brian Pane]
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  *) Reorder the definitions for mod_ldap and mod_auth_ldap within
     config.m4 to make sure the parent mod_ldap is defined first.
     This ensures that mod_ldap comes before mod_auth_ldap in the
     httpd.conf file, which is necessary for mod_auth_ldap to load.
     PR 14256  [Graham Leggett]

  *) Fix the building of cgi command lines when the query string
     contains '='.  PR 13914  [Ville Skyttä <ville.skytta@iki.fi>,
     Jeff Trawick]

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  *) Rename CacheMaxStreamingBuffer to MCacheMaxStreamingBuffer. Move
     implementation of MCacheMaxStreamingBuffer from mod_cache to
     mod_mem_cache. MCacheMaxStreamingBuffer now defaults to the
     lesser of 100,000 bytes or MCacheMaxCacheObjectSize. This should 
     eliminate the need for explicitly coding MCacheMaxStreamingBuffer
     in most configurations. [Bill Stoddard]

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  *) mod_cache: Fix PR 15113, a core dump in cache_in_filter when
     a redirect occurs. The code was passing a format string and
     integer to apr_pstrcat. Changed to apr_psprintf.
     [Paul J. Reder]

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  *) Replace APU_HAS_LDAPSSL_CLIENT_INIT with APU_HAS_LDAP_NETSCAPE_SSL
     as set by apr-util in util_ldap.c. This should allow mod_ldap
     to work with the Netscape/Mozilla LDAP library. [Øyvin Sømme
     <somme@oslo.westerngeco.slb.com>, Graham Leggett]

  *) Fix critical bug in new --enable-v4-mapped configure option
     implementation which broke IPv4 listening sockets on some
     systems.  [hiroyuki hanai <hanai@imgsrc.co.jp>]

  *) mod_setenvif: Fix BrowserMatchNoCase support for non-regex
     patterns [André Malo <nd@perlig.de>]

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  *) Add version string to provider API.  [Justin Erenkrantz]
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  *) build: './configure && make' now works without an in-tree
     apr and apr-util. [Wilfredo Sanchez]

  *) mod_negotiation: Set the appropriate mime response headers
     (Content-Type, charset, Content-Language and Content-Encoding)
     for negotated type-map "Body:" responses (such as the error
     pages.)  [André Malo <nd@perlig.de>]

  *) mod_log_config: Allow '%%' escaping in CustomLog format
     strings to insert a literal, single '%'.
     [André Malo <nd@perlig.de>]

  *) mod_autoindex: AddDescription directives for directories
     now work as in Apache 1.3, where no trailing '/' is
     specified on the directory name.  Previously, the trailing
     '/' *had* to be specified, which was incompatible with
     Apache 1.3.  PR 7990  [Jeff Trawick]

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  *) Fix for PR 14556. The expiry calculations in mod_cache were
     trying to perform "now + ((date - lastmod) * factor)" where
     date == lastmod resulting in "now + 0". The code now follows
     the else path (using the default expiration) if date is
     equal to lastmod. [rx@armstrike.com (Sergey), Paul J. Reder]

  *) Use AP_DECLARE in the debug versions of ap_strXXX in case the
     default calling convention is not the same as the one used by
     AP_DECLARE.  [Juan Rivera <Juan.Rivera@citrix.com>]

  *) mod_cache: Don't cache response header fields designated
     as hop-by-hop headers in HTTP/1.1 (RFC 2616 Section 13.5.1).
     [Estrade Matthieu <estrade-m@ifrance.com>, Brian Pane]

  *) mod_cgid: Handle environment variables containing newlines.
     PR 14550  [Piotr Czejkowski <apache@czarny.eu.org>, Jeff
     Trawick]

  *) Move mod_ext_filter out of experimental and into filters.
     [Jeff Trawick]

  *) Fixed a memory leak in mod_deflate with dynamic content.
     PR 14321  [Ken Franken <kfranken@decisionmark.com>]

  *) Add --[enable|disable]-v4-mapped configure option to control
     whether or not Apache expects to handle IPv4 connections
     on IPv6 listening sockets.  Either setting will work on 
     systems with the IPV6_V6ONLY socket option.  --enable-v4-mapped
     must be used on systems that always allow IPv4 connections on
     IPv6 listening sockets.  PR 14037 (Bugzilla), PR 7492 (Gnats)
     [Jeff Trawick]

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  *) This fixes a problem where the underlying cache code
     indicated that there was one more element on the cache
     than there actually was. This happened since element 0
     exists but is not used. This code allocates the correct
     number of useable elements and reports the number of
     actually used elements. The previous code only allowed
     MCacheMaxObjectCount-1 objects to be stored in the
     cache. [Paul J. Reder]

  *) mod_setenvif: Add SERVER_ADDR special keyword to allow
     envariable setting according to the server IP address
     which received the request.  [Ken Coar]

  *) mod_cgid: Terminate CGI scripts when the client connection 
     drops.  PR 8388  [Jeff Trawick]

  *) Rearrange OpenSSL engine initialization to support RAND 
     redirection on crypto accelerator. 
     [Frederic DONNAT <frederic.donnat@zencod.com>]

  *) Always emit Vary header if mod_deflate is involved in the
     request.  [Andre Malo <nd@perlig.de>]
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  *) mod_isapi: Stop unsetting the 'empty' query string result with
     a NULL argument in ecb->lpszQueryString, eliminating segfaults
     for some ISAPI modules.  PR 14399
     [Detlev Vendt <detlev.vendt@brillit.de>]

  *) mod_isapi: Fix an issue where the HSE_REQ_DONE_WITH_SESSION
     notification is received before the HttpExtensionProc() returns 
     HSE_STATUS_PENDING.  This only affected isapi .dll's configured 
     with the ISAPIFakeAsync on directive.  PR 11918
     [John DeSetto <jdesetto@radiantsystems.com>, William Rowe]

  *) mod_isapi: Fix the issue where all results from mod_isapi would
     run through the core die handler resulting in invalid responses
     or access log entries.  PR 10216 [William Rowe]

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  *) Improves the user friendliness of the CacheRoot processing
     over my last pass. This version avoids the pool allocations
     but doesn't avoid all of the runtime checks. It no longer
     terminates during post-config processing. An error is logged
     once per worker, indicating that the CacheRoot needs to be set.
     [Paul J. Reder]

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  *) Fix a bug where we keep files open until the end of a 
     keepalive connection, which can result in:
     (24)Too many open files: file permissions deny server access
     especially on threaded servers.  [Greg Ames, Jeff Trawick]

  *) Fix a bug in which mod_proxy sent an invalid Content-Length
     when a proxied URL was invoked as a server-side include within
     a page generated in response to a form POST.  [Brian Pane]

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  *) Added code to process min and max file size directives and to
     init the expirychk flag in mod_disk_cache. Added a clarifying
     comment to cache_util.   [Paul J. Reder]

  *) The value emitted by ServerSignature now mimics the Server HTTP
     header as controlled by ServerTokens.  [Francis Daly <deva@daoine.org>]

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  *) Gracefully handly retry situations in the SSL input filter,
     by following the SSL libraries' retry semantics.
     [William Rowe]

  *) Terminate CGI scripts when the client connection drops.  This
     fix only applies to some normal paths in mod_cgi.  mod_cgid
     is still busted.  PR 8388  [Jeff Trawick]

  *) Fix a bug where 416 "Range not satisfiable" was being
     returned for content that should have been redirected.
     [Greg Ames]
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  *) Fix memory leak in mod_ssl from internal SSL library allocations
     within SSL_get_peer_certificate and X509_get_pubkey.
     [Zvi Har'El <rl@math.technion.ac.il>
      Madhusudan Mathihalli <madhusudan_mathihalli@hp.com>].

  *) mod_ssl uses free() inappropriately in several places, to free
     memory which has been previously allocated inside OpenSSL.
     Such memory should be freed with OPENSSL_free(), not with free().
     [Nadav Har'El <nyh@math.technion.ac.il>,
      Madhusudan Mathihalli <madhusudan_mathihalli@hp.com>].

  *) Emit a message to the error log when we return 404 because
     the URI contained '%2f'.  (This was previously nastily silent
     and difficult to debug.)  [Ken Coar]

  *) Fix streaming output from an nph- CGI script.  CGI:IRC now
     works.  PR 8482  [Jeff Trawick]

  *) More accurate logging of bytes sent in mod_logio when
     the client terminates the connection before the response
     is completely sent  [Bojan Smojver <bojan@rexursive.com>]

  *) Fix some problems in the perchild MPM.  
     [Jonas Eriksson <jonas@webkonsulterna.com>]

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  *) Change the CacheRoot processing to check for a required
     value at config time. This saves a lot of wasted processing
     if the mod_disk_cache module is loaded but no CacheRoot
     was provided. This fix also adds code to log an error
     and avoid useless pallocs and procesing when the computed
     cache file name cannot be opened. This also updates the
     docs accordingly.  [Paul J. Reder]

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  *) Introduce the EnableSendfile directive, allowing users of NFS 
     shares to disable sendfile mechanics when they either fail
     outright or provide intermitantly corrupted data.  PR 
     [William Rowe]

  *) Resolve the error "An operation was attempted on something 
     that is not a socket.  : winnt_accept: AcceptEx failed. 
     Attempting to recover." for users of various firewall and
     anti-virus software on Windows.  PR 8325  [William Rowe]

  *) Add the ProxyBadHeader directive, which gives the admin some
     control on how mod_proxy should handle bogus HTTP headers from
     proxied servers. This allows 2.0 to "emulate" 1.3's behavior if
     desired. [Jim Jagielski]

  *) Change the LDAP modules to export their symbols correctly
     during a Windows build. Add dsp files for Windows. Update
     README.ldap file for Windows build instructions.
     [Andre Schild <A.Schild@aarboard.ch>]

  *) Performance improvements for the code that generates HTTP
     response headers  [Brian Pane]

  *) Add -S as a synonym for -t -DDUMP_VHOSTS.
     [Thom May <thom@planetarytramp.net>]

  *) Fix a bug with dbm rewrite maps which caused the wrong value to
     be used when the key was not found in the dbm.  PR 13204
     [Jeff Trawick]

  *) Fix a problem with streaming script output and mod_cgid.
     [Jeff Trawick]

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  *) Add ap_register_provider/ap_lookup_provider API.
     [John K. Sterling <john@sterls.com>, Justin Erenkrantz]

Changes with Apache 2.0.43

  *) SECURITY [CAN-2002-0840]: HTML-escape the address produced by 
     ap_server_signature() against this cross-site scripting 
     vulnerability exposed by the directive 'UseCanonicalName Off'.  
     Also HTML-escape the SERVER_NAME environment variable for CGI 
     and SSI requests.  It's safe to escape as only the '<', '>', 
     and '&' characters are affected, which won't appear in a valid 
     hostname.  Reported by Matthew Murphy <mattmurphy@kc.rr.com>.
     [Brian Pane]

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  *) Fix a core dump in mod_cache when it attemtped to store uncopyable
     buckets. This happened, for instance, when a file to be cached
     contained SSI tags to execute a CGI script (passed as a pipe
     bucket). [Paul J. Reder]

  *) Ensure that output already available is flushed to the network
     when the content-length filter realizes that no new output will
     be available for a while.  This helps some streaming CGIs as
     well as some other dynamically-generated content.  [Jeff Trawick]

  *) Fix a mutex problem in mod_ssl session cache support which
     could lead to an infinite loop.  PR 12705  
     [amund.elstad@ergo.no (Amund Elstad), Jeff Trawick]

  *) SECURITY [CAN-2002-1156] (cve.mitre.org):
     Fix the exposure of CGI source when a POST request is sent to 
     a location where both DAV and CGI are enabled. [Ryan Bloom]
  *) Allow the UserDir directive to accept a list of directories.
     This matches what Apache 1.3 does.  Also add documentation for
     this feature. [Jay Ball <jay@veggiespam.com>]

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  *) New Module: mod_logio. adds the ability to log bytes sent and
     received. [Bojan Smojver <bojan@rexursive.com>]

  *) SuExec needs to use the same default directory as the rest of
     server, namely /usr/local/apache2.  
     [SangBeom han <sbhan@os.korea.ac.kr>]

  *) Get mod_auth_ldap to retry connections on LDAP_SERVER_DOWN.
     [Thomas Bennett <thomas.bennett@eds.com>, Graham Leggett]

  *) Make sure the contents of the WWW-Authenticate header is
     passed on a 4xx error by proxy. Previously all headers
     were dropped, resulting in the browser being unable to
     authenticate. [Dr Richard Reiner <rreiner@fscinternet.com>,
     Richard Danielli <rdanielli@fscinternet.com>, Graham Wiseman
     <gwiseman@fscinternet.com>, David Henderson
     <dhenderson@fscinternet.com>]

  *) Make mod_cache's CacheMaxStreamingBuffer directive work
     properly for virtual hosts that override server-wide mod_cache
     setttings.  [Matthieu Estrade <estrade-m@ifrance.com>]

  *) Add -p option to apxs to allow programs to be compiled with apxs.
     [Justin Erenkrantz]

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Changes with Apache 2.0.42

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  *) mod_dav: Check for versioning hooks before using them.
     [Greg Stein]
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Changes with Apache 2.0.41
  *) The protocol version (eg: HTTP/1.1) in the request line parsing
     is now case insensitive. [Jim Jagielski]

  *) Allow AddOutputFilterByType to add multiple filters per directive.
     [Justin Erenkrantz]

  *) Remove warnings with Sun's Forte compiler.  [Justin Erenkrantz]

  *) Fixed mod_disk_cache's generation of 304s
     [Kris Verbeeck <Kris.Verbeeck@ubizen.com>]

  *) Add support for using fnmatch patterns in the final path
     segment of an Include statement (eg.. include /foo/bar/*.conf).
     and remove the noise on stderr during config dir processing.
     [Joe Orton <jorton@redhat.com>]

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  *) mod_cache: cache_storage.c. Add the hostname and any request
     args to the key generated for caching. This provides a unique
     key for each virtual host and for each request with unique
     args. [Paul J. Reder, args code provided by Kris Verbeeck]

  *) mod_cache: Do not cache responses to GET requests with query
     URLs if the origin server does not explicitly provide an
     Expires header on the response (RFC 2616 Section 13.9)
     [Kris Verbeeck krisv@be.ubizen.com]
  *) Fix memory leak in core_output_filter.  [Justin Erenkrantz]

  *) Update OpenSSL detection to work on Darwin.
     [Sander Temme <sctemme@covalent.net>]

  *) Update the xslt and css to give the documentation a more
     modern style.
     [André Malo <nd@perlig.de>, Gernot Winkler <greh@o3media.de>]
  *) Fix some bucket memory leaks in the chunking code
     [Joe Schaefer <joe+apache@sunstarsys.com>]

  *) Add ModMimeUsePathInfo directive.  [Justin Erenkrantz]

  *) mod_cache: added support for caching streamed responses (proxy,
     CGI, etc) with optional CacheMaxStreamingBuffer setting [Brian Pane]

  *) Add image/x-icon to httpd.conf PR 10993.
     [Ian Holsman, Peter Bieringer <pb@bieringer.de>]

  *) Fix FileETags none operation.  PR 12207.
     [Justin Erenkrantz, Andrew Ho <andrew@tellme.com>]