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  [Remove entries to the current 2.0 and 2.2 section below, when backported]
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  *) Move mod_dbd to /modules/database/ [Nick Kew]

  *) Move mod_filter and mod_charset_lite to /modules/filters/ [Nick Kew]
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  *) Fix mod_dbd's config [Brian J. France <list firehawksystems.com>]

  *) httpd.exe/apachectl -V: display the DYNAMIC_MODULE_LIMIT setting, as
     in 1.3.  [Jeff Trawick]

  *) mod_log_config: %{hextid}P will log the thread id in hex with APR
     versions 1.2.0 or higher.  [Jeff Trawick]

  *) mod_cgid: Refuse to work on Solaris 10 due to OS bugs.  PR 34264.
     [Justin Erenkrantz]

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  *) Teach mod_ssl to use arbitrary OIDs in an SSLRequire directive,
     allowing string-valued client certificate attributes to be used for
     access control, as in: SSLRequire "value" in OID("1.3.6.1.4.1.18060.1")
     [Martin Kraemer, David Reid]

  *) mod_proxy_ajp: mod_proxy_ajp sends empty SSL attributes for non SSL
     connections. PR36883.
     [William Barker <william.barker wilshire.com>, Ruediger Pluem]

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  *) Elimiated the NET_TIME filter, restructuring the timeout logic.
     This provides a working mod_echo on all platforms, and ensures any
     custom protocol module is at least given an initial timeout value
     based on the <VirtualHost > context's Timeout directive.
     [William Rowe]

  *) mod_proxy: Run the request_status hook also if there are no free workers
     or all workers are in error state.
     [Ruediger Pluem, Brian Akins <brian.akins turner.com>]

  *) mod_proxy_balancer: mod_proxy_balancer does not handle sticky sessions
     with tomcat correctly. PR36507. [Ruediger Pluem]

  *) mod_proxy_connect: Fix high CPU loop on systems like UnixWare which
     trigger POLL_ERR or POLL_HUP on a terminated connection.  PR 36951.
     [Jeff Trawick, Ruediger Pluem]

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  *) SECURITY: CAN-2005-2970 (cve.mitre.org)
     worker MPM: Fix a memory leak which can occur after an aborted
     connection in some limited circumstances.  [Greg Ames]
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  *) Doxygen fixup [Neale Ranns <neale ranns.org>, Ian Holsman]

  *) mod_cache/mod_dir: Correct a subrequest lookup bug which was preventing
     mod_dir from serving indexes correctly with mod_cache enabled. 
     [Colm MacCarthaigh]

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Changes with Apache 2.1.8

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  *) Fix lingering close implementation to match 1.3.x behaviour.
     PR 35292.  [Joe Orton]

  *) mod_ssl: Support limited buffering of request bodies to allow 
     per-location renegotiation to proceed.  PR 12355.  [Joe Orton]
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  *) Fix regression since 2.0.x in AllowOverride Options handling. 
     PR 35330.  [kabe <kabe sra-tohoku.co.jp>]

  *) mod_ssl: Fix memory leak in ssl_util_algotypeof().
     PR 25659.  [David Blake <dblake hp com>, Martin Kraemer]
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  *) prefork, worker and event MPMs: Support a graceful-stop procedure:
     Server will wait until existing requests are finished or until  
     "GracefulShutdownTimeout" number of seconds before exiting. 
     [Colm MacCarthaigh, Ken Coar, Bill Stoddard]

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  *) prefork, worker and event MPMs: Prevent children from holding open 
     listening ports upon graceful restart or stop. PR 28167. 
     [Colm MacCarthaigh, Brian Pinkerton <bp thinkpink.com>]

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  *) SECURITY: CAN-2005-2700 (cve.mitre.org)
     mod_ssl: Fix a security issue where "SSLVerifyClient" was not
     enforced in per-location context if "SSLVerifyClient optional"
     was configured in the vhost configuration.  [Joe Orton]

  *) mod_ssl: Catch parse errors from misconfigured or malformed
     CRLs.  PR 36438.  [Joe Orton]

  *) mod_proxy/mod_proxy_balancer: lbmethods now implemented as
     providers. Prevent problems when no Vhost containers were
     configured with proxy balancers. [Jim Jagielski]

  *) New provider function to list all available provider names in a
     specific group and version (ap_list_provider_names). [Jim Jagielski]

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  *) mod_cache: Enhance CacheEnable/CacheDisable to control caching on a
     per-protocol, per-host and per-path basis. Intended for proxy
     configurations. [Colm MacCarthaigh]

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  *) mod_disk_cache: Canonicalise the storage key, for improved hit/miss
     ratio. [Colm MacCarthaigh]

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  *) mod_cgid: Append .PID to the script socket filename and remove the
     script socket on exit. [Colm MacCarthaigh, Jim Jagielski]

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  *) mod_cgid: run the get_suexec_identity hook within the request-handler 
     instead of within cgid. PR 36410. [Colm MacCarthaigh]

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  *) Linux 2.0: remove support for threaded MPM's due to linuxthreads use
     of SIGUSR1 clashing with graceful restart signal. [Colm MacCarthaigh]

Changes with Apache 2.1.7
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  *) SECURITY: CAN-2005-2491 (cve.mitre.org): 
     Fix integer overflows in PCRE in quantifier parsing which could
     be triggered by a local user through use of a carefully-crafted 
     regex in an .htaccess file.  [Philip Hazel]

  *) mod_proxy/mod_proxy_balancer: Provide a simple, functional
     interface to add additional balancer lb selection methods
     without requiring code changes to mod_proxy/mod_proxy_balancer;
     these can be implemented via sub-modules now. [Jim Jagielski]

  *) mod_cache: Fix incorrectly served 304 responses when expired cache
     entity is valid, but cache is unwritable and headers cannot be
     updated.  [Colm MacCarthaigh <colm stdlib.net>]

  *) mod_cache: Remove entities from the cache when re-validation
     receives a 404 or other content-no-longer-present error.
     [Rüdiger Plüm ruediger.pluem vodafone.com]

  *) mod_disk_cache: Properly remove files from cache when needed.
     [Rüdiger Plüm ruediger.pluem vodafone.com]

  *) mod_disk_cache: Support htcacheclean removing directories.
     [Andreas Steinmetz]

  *) htcacheclean: Add -t option to remove empty directories.
     [Colm MacCarthaigh <colm stdlib.net>]

  *) Remove the base href tag from mod_proxy_ftp, as it breaks relative
     links for clients not using an Authorization header. [Graham Leggett,
     Jon Snow <jsnow27 gatesec.net>]

  *) mod_cache: Restore the HTTP status of cached responses.
     [Hansjoerg Pehofer <hansjoerg.pehofer uibk.ac.at>]

  *) mod_cache: Store varied contents all in the same prefix for a varied URI.
     [Paul Querna]

  *) mod_cache: Run the CACHE_SAVE and CACHE_OUT Filters after other content
     filters. [Paul Querna]

  *) mod_negotiation: Correctly report 404 instead of 403 for missing files.
     [Paul Querna]

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  *) new hook (request_status) that gets ran in proxy_handler just before 
     the final return.  This gives modules an opportunity to do something 
     based on the proxy status. (minor MMN bump)
     [Brian Akins <bakins turner.com>, Ian Holsman]
  *) Add additional SSLSessionCache option, 'nonenotnull', which is
     similar to 'none' (disabling any external shared cache) but forces
     OpenSSL to provide a non-null session ID.  [Jim Jagielski]
  *) Add httxt2dbm to support/ for creating RewriteMap DBM Files.
     [Paul Querna]

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  *) Add SSL_COMPRESS_METHOD variable (included in +StdEnvVars) to note
     the negotiated compression.  [Georg v. Zezschwitz <gvz 2scale.de>]

  *) Fixed complaints about unpackaged files within the RPM build
     after changes to the config files. [Graham Leggett]

  *) Fix shutdown for the Worker MPM when an Accept Filter is used. Instead of 
     just closing the socket, a HTTP request is made, to make sure the child is 
     always awakened. [Paul Querna]

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Changes with Apache 2.1.6

  *) Fix htdbm password validation for records which included comments.
     [Eric Covener <covener gmail.com>]

  *) mod_cgid: Fix buffer overflow processing ScriptSock directive.
     [Steve Kemp <steve steve.org.uk>]

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Changes with Apache 2.1.5

  *) mod_ssl: Setting the Protocol to 'https' can replace the use of the 
     'SSLEngine on' command. [Paul Querna]

  *) core: Refactor the mapping of Accept Filters to Sockets. Add the 
     AcceptFilter and Protocol directives to aid in mapping filter types.
     Extend the Listen directive to optionally take a protocol name.
     [Paul Querna]

  *) mod_disk_cache: Support storing multiple variations of one URL. PR 35211.
     [Paul Querna]

  *) mod_disk_cache: Atomically create the header data file. [Paul Querna]

  *) mod_cache: Fix 'Vary: *' behavior to be RFC compliant. PR 16125. 
     [Paul Querna]

  *) mod_cache: Rename 'generate_name' to 'ap_cache_generate_name'. 
     [Paul Querna]

  *) mod_mime_magic: Handle CRLF-format magic files so that it works with
     the default installation on Windows.  [Jeff Trawick]

  *) core: Allow multiple modules to register interest in a single 
     configuration command. [Paul Querna]

  *) authn_provider_alias: Adds the configuration block tag
     <AuthnProviderAlias baseProvider Alias>
     Authentication directives contained within this block can be
     referenced as a new authProvider using the AuthBasicProvider or
     AuthDigestProvider directive.  These directives will be merged in to
     the per_dir configuration just before the base provider is called.
     [Brad Nicholes]

  *) ap_getword_conf: Fix backslashes at the end of configuration directives. 
     PR 34834. [Timo Viipuri <viipuri dlc.fi>]

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  *) mod_dbd: New additions: mod_dbd.c, mod_dbd.h, mod_dbd.xml
     Provide module hooks for apr_dbd; optimise for httpd
     threaded and non-threaded arch [Nick Kew]

  *) ab: SSL support rewritten, improved, and enabled if SSL is enabled
     during the build; -f and -Z arguments added to specify SSL protocol
     options.  [Masaoki Kobayashi <masaoki techfirm.co.jp>]

  *) mod_info: Show the Quick Handler [Paul Querna]
  *) mod_ldap: Add the directive LDAPVerifyServerCert to specify 
     whether to force verification of the server certificate when
     establishing an SSL connection to the LDAP server. 
     [Brad Nicholes]
     
  *) mod_proxy: Run mod_rewrite before mod_proxy in the translate_name
  *) Add AP_INIT_TAKE_ARGV for configuration commands. (minor MMN bump) 
     [Paul Querna]

  *) ap_get_local_host() rewritten for APR. [Jim Jagielski]

  *) Add the ap_vhost_iterate_given_conn function to expose the information
     used in Name Based Virtual Hosting. (minor MMN bump)
     [Paul Querna]

  *) Remove the never working ap_method_list_do and ap_method_list_vdo.
     [Paul Querna]

  *) Added makefile and doc for building mod_ssl on the NetWare 
     platform. [Guenter Knauf, Brad Nicholes]
  
  *) mod_deflate: Merge the Vary header, isntead of Setting it. Fixes
     applications that send the Vary Header themselves, and also apply 
     mod_deflate as an output filter. [Paul Querna]
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  *) Change the default (when not present in the config file) setting
     for UseCanonicalName to Off.
     [Joshua Slive]

  *) mod_userdir: The module no longer does any remapping unless the
     UserDir directive is present in the config file.
     [Joshua Slive]

  *) Massively simplify the distributed httpd.conf by removing
     many features and many directives that are at their default
     setting.  Add a selection of example config excerpts for adding
     extra features in the conf/extra/ directory.  Install the
     distributed config and the extra config examples in the
     conf/original/ directory during make install.
     [Joshua Slive, Justin Erenkrantz]

  *) NetWare: Reposition mod_asis, mod_actions, mod_cgi, mod_imagemap,
     mod_userdir and mod_autoindex as shared modules rather than 
     built-in modules within the NetWare build.
     [Brad Nicholes]

  *) Rename mod_imap to mod_imagemap.
     [Paul Querna]

  *) util_ldap: Eliminate the load ordering of mod_ldap and mod_authnz_ldap
     by changing the mod_ldap exported functions to optional functions.
     [Brad Nicholes]

Changes with Apache 2.1.4

  *) Don't let a subrequest inherit headers describing the original request's
     body.  [Greg Ames]

  *) Fix Windows CompContext buff size miscalculation
     [Allan Edwards]

  *) Add ReceiveBufferSize directive to control the TCP receive buffer.
     [Eric Covener <covener gmail.com>]

  *) mod_proxy: Add proxy-sendextracrlf option to send an extra CRLF at the
     end of the request body to work with really old HTTP servers.
     [Justin Erenkrantz]

  *) util_ldap: Keep track of the number of attributes retrieved from 
     LDAP so that all the values can be properly cached even if the 
     value is NULL. PR 33901 [Brad Nicholes]
  *) mod_cache: Fix error where incoming Cache-Control would be ignored.
     [Justin Erenkrantz]

  *) mod_cache: Correctly handle originally conditional requests.
     [Sander Striker]

  *) mod_disk_cache: Correctly update cached headers on revalidated responses.
     [Sander Striker, Justin Erenkrantz]

  *) worker MPM/mod_status: Support per-worker tracking of pid and
     generation in the scoreboard so that mod_status can accurately
     represent workers in processes which are gracefully terminating.
     (major MMN bump)
     [Jeff Trawick]

  *) Correctly export all mod_dav public functions.
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Changes with Apache 2.1.3

  *) mod_ssl: Add ssl_ext_lookup optional function for accessing
     certificate extensions.   [David Reid, Joe Orton]

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  *) Add support for use of an external PCRE library; pass the
     --with-pcre flag to configure.  PR 27550.  [Joe Orton,
     Andres Salomon <dilinger voxel.net>]

  *) Renamed regex interfaces to be namespace-safe, and moved from
     pcreposix.h header to ap_regex.h: regex_t->ap_regex_t,
     regmatch_t->ap_regmatch_t; REG_*->AP_REG_*; functions
     reg*->ap_reg*.  PR 27550.  [Andres Salomon <dilinger voxel.net>,
     Joe Orton]

  *) Only recompile buildmark.c when we have to relink httpd.
     [Justin Erenkrantz]

  *) mod_cache: Fix up handling of revalidated responses.
  *) mod_disk_cache: Properly load cached ETag from on-disk structures.
     [Justin Erenkrantz]

  *) mod_authnz_ldap: Added an optional second parameter to AuthLDAPURL
     to allow it to override the connection type set in mod_ldap. This
     parameter can be set to NONE, SSL or TLS | STARTTLS.
     [Brad Nicholes]

  *) Fix --with-apr=/usr and/or --with-apr-util=/usr.  PR 29740.
     [Max Bowsher <maxb ukf.net>]

  *) mod_proxy: Fix ProxyRemoteMatch directive.  PR 33170.
     [Rici Lake <rici ricilake.net>]

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  *) mod_proxy: Fix ap_proxy_canonenc API.
     PR 32459. [Jim Jagielski]
  *) mod_cache: Add CacheStorePrivate and CacheStoreNoStore directive.
     [Justin Erenkrantz]

  *) Add --enable-pie flag to configure, to build httpd as a Position
     Independent Executable where supported (GCC/binutils).
     [Joe Orton]

  *) proxy_balancer: Add in load-balancing via weighted traffic
     byte count. [Jim Jagielski]

  *) mod_disk_cache: Cache r->err_headers_out headers.  This allows CGI
     scripts to be properly cached.  [Justin Erenkrantz, Sander Striker]

  *) mod_ldap: Updated to use the new apr-util v1.1 apr_ldap_*_option()
     API for the setting of server and client SSL certificates. Replaced
     LDAPTrustedCA directive with LDAPTrustedGlobalCert and
     LDAPTrustedClientCert directives to correctly support global certs
     (CA certs / Netware client certs) and per connection client certs
     as supported by Netware, OpenLDAP and Netscape/Mozilla.
     [Graham Leggett]

  *) mod_cache: Remove unimplemented CacheForceCompletion directive.
     [Justin Erenkrantz]

  *) support/check_forensic: Fix temp file usage
     [Javier Fernandez-Sanguino Pen~a <jfs computer.org>]

  *) mod_ssl: Add SSLCADNRequestFile and SSLCADNRequestPath directives
     which can be used to configure a specific list of CA names to send
     in a client certificate request.  PR 32848. 
     [Tim Taylor <tim.taylor dfas.mil>]

  *) --with-module can now take more than one module to be statically
     linked: --with-module=<modtype>:<modfile>,<modtype>:<modfile>,...
     If the <modtype>-subdirectory doesn't exist it will be created and
     populated with a standard Makefile.in.  [Erik Abele]

  *) Remove some compiler warnings within the LDAP modules [Graham Leggett]

  *) Add a build script to create a solaris package. [Graham Leggett]

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  *) ap_http_scheme() replaced with ap_http_method() - this function
     returns the scheme (http v.s. https).
     [William Rowe]

  *) mod_proxy: Fix a request corruption problem and a buffering problem
     which sometimes prevented proxy-sendchunks from working.
     [Jeff Trawick]

  *) Fix the RPM spec file so that an RPM build now works. An RPM
     build now requires system installations of APR and APR-util.
     [Graham Leggett]

  *) Significantly simplify the load balancer scheduling algorithm
     for the proxy BalancerMember weighting. loadfactors (lbfactors)
     are now normalized with respect to each other. [Jim Jagielski]

  *) mod_dumpio: Added to the available module suite; it is an
     I/O logging/dumping module. Placed in the (new) debug module
     subdirectory. mod_bucketeer moved to that directory as well.
     [Jim Jagielski]
  *) core: Add support for APR_TCP_DEFER_ACCEPT to defer accepting
     of a connection until data is available.
     [Paul Querna]

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Changes with Apache 2.1.2

  *) mod_proxy: Respect errors reported by pre_connection hooks.
     [Jeff Trawick]

  *) core: Error out on sections that are missing an argument instead of
     silently consuming the section. PR 25460.
     [Geoffrey Young, Paul Querna]

  *) mod_cache/mod_mem_cache/mod_disk_cache: Move out of experimental.

  *) Upgraded PCRE to version 5.0. [Brian Pane]
  *) mod_cgid: Catch configuration problem where two web server instances
     share same ServerRoot but admin forgot to use ScriptSock.
     [Jeff Trawick]

  *) mod_cgi: Ensure that all stderr is logged for a script which returns
     a Location header to generate a non-local redirect.  PR 20111.
     [Joe Orton]

  *) Added the Event MPM to more efficiently handle clients during a 
     Keep Alive request.
     [Paul Querna, Greg Ames]

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Changes with Apache 2.1.1

  *) mod_proxy_http: Stream content better - always flush buffered data to
     the client before blocking waiting for new data.  PR 19954.
     [Joe Orton]

  *) mod_ssl: Add support for command-line option "-t -DDUMP_CERTS" which
     will dump the filenames of all configured SSL certificates to stdout.
     [Joe Orton]

  *) mod_disk_cache: Remove a bunch of non-implemented garbage collection
     and cache size directives that are now available through htcacheclean.
     [Justin Erenkrantz]

  *) Add htcacheclean to support/ for assistance with mod_disk_cache.
     [Andreas Steinmetz]

  *) mod_authnz_ldap: Added the directive "Requires ldap-filter" that
     allows the module to authorize a user based on a complex LDAP
  *) mod_usertrack: Run the fixups hook before other modules.
  *) Allow mod_authnz_ldap authorization functionality to be used 
     without requiring the user to also be authenticated through 
     mod_authnz_ldap. This allows other authentication modules to 
     take advantage of LDAP authorization only [PR 28253]
     [Jari Ahonen jah progress.com, Brad Nicholes]
     
  *) Log the client IP address when an error occurs disabling nagle on a
     connection, but log at a severity of debug since this error 
     generally means that the connection was dropped before data was
     sent.  Log the client IP address when reporting errors in the core
     output filter.  [Jeff Trawick]

  *) core: Add a warning message if the request line read fails.
     [Paul Querna]

  *) mod_rewrite: Removed the MaxRedirects option in favor of the
     core LimitInternalRecursion directive.  [André Malo]
  *) mod_info: Added listing of the Request Hooks and added more build 
     information like 'httpd -V' contains. Changed output to XHTML. 
     [Paul Querna]

  *) mod_info: Rewrote config tree walk using a recursive function.
     Added ?config option. Added printout of config filename and line numbers.
     [Rici Lake <rici ricilake.net>, Paul Querna]

  *) mod_proxy: Fix type error that prevents proxy-sendchunks from working.
     [Justin Erenkrantz]

  *) mod_proxy: Fix data corruption by properly setting aside buckets.
     [Justin Erenkrantz]

  *) mod_proxy: If a request has a blank body and has a 0 Content-Length
     headers, pass that to the proxy.  [Justin Erenkrantz]

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  *) Recognize QSA flag in mod_rewrite again.
     [Jan Kratochvil <rcpt-dev.AT.httpd.apache.org jankratochvil.net>]

  *) Restructured mod_auth_ldap to fit the new authentication model.
     The module is now called authnz_ldap and has been moved out of
     the modules/experimental area and into modules/aaa with the other
     auth modules.  Both the authn_ldap provider and the authz_ldap
     handler are contained within the authnz_ldap module.  The 
     authz_ldap handler introduces 3 new "requires" values for handling
     authorization.  These handlers are ldap-user, ldap-group and 
     ldap-dn. [Brad Nicholes]

  *) Fix some compiler warnings in proxy
     [Geoffrey Young <geoff@modperlcookbook.org>]

  *) mod_ssl: Add SSL_CLIENT_V_REMAIN variable, representing the
     number of days until the client cert expires.  [Joe Orton]

  *) Add test_config hook, run only if httpd is invoked using -t.
     [Joe Orton]

  *) Improve error handling for corrupted pid files.  [Jeff Trawick]

  *) mod_proxy.c and proxy_util.c: Enable compiling on 2.0-HEAD 
     (for backwards compatibility):
     Avoids mod_ssl.h (not included in 2.0-HEAD) and
     use apr_socket_create_ex for 0.9.x 
     [Mladen Turk]

  *) Added proxy_ajp.c module for proxy support to ajp:// backends.
     [Jean Frederic Clere]

  *) Fixes the build of proxy on Windows. Since the proxy_module is declared
     as extern using AP_MODULE_DECLARE_DATA that expands to dllexport, there
     is a LNK2001 error when building proxy_http. [Mladen Turk]

  *) Remove LDAP toolkit specific code from util_ldap and mod_auth_ldap.
     [Graham Leggett]

  *) Remove deprecated/removed APR_STATUS_IS_SUCCESS().  [Justin Erenkrantz]

  *) perchild MPM: Fix thread safety problem in the use of longjmp().
     [Tsuyoshi SASAMOTO <nazonazo super.win.ne.jp>]

  *) Add load balancer support to the scoreboard in preparation for
     load balancing support in mod_proxy. [Mladen Turk]

  *) mod_nw_ssl: Added the directive NWSSLUpgradeable to mod_nw_ssl to 
     allow a non-secure connection to be upgraded to secure connections
     [Brad Nicholes]
     
  *) core: Add Options= syntax to AllowOverride to specify which options
     may be overridden in .htaccess files. PR 29310.
     [Tom Alsberg <alsbergt cs.huji.ac.il>, Paul Querna]

  *) ab: Handle long URLs with an error instead of an buffer overflow.
     PR 28204. [Erik Weide <erik.weidel mplus-technologies.de>, Paul Querna]

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  *) mod_so, core: Add new command line options to print all loaded
     modules. '-t -D DUMP_MODULES' and '-M' will show all static 
     and shared modules as loaded from the configuration file.
     [Paul Querna]

  *) mod_autoindex: Add ShowForbidden to IndexOptions to list files
     that are not shown because the subrequest returned 401 or 403. 
     PR 10575.  [Paul Querna]

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  *) mod_headers: implement "Early" processing option in post_read_request
     to enable Header and RequestHeader directives to be used to set up
     testcases for pre-fixups request phases [Nick Kew]

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  *) mod_proxy: multiple bugfixes, principally support cookies in
     ProxyPassReverse, and don't canonicalise URL passed to backend.
     Documentation correspondingly updated. [Nick Kew <nick webthing.com>]

  *) mod_deflate: support gzip flags in inflate_out_filter
     [Nick Kew <nick webthing.com>]

  *) Drop the ErrorHeader directive which turned out to be a misnomer.
     Instead there's a new optional flag for the Header directive
     ('always'), which keeps the former ErrorHeader functionality.
  *) mod_deflate: Don't deflate responses with zero length 
     e.g. proxied 304's [Allan Edwards]

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  *) <IfModule> now recognizes the module identifier in addition to the
     file name. PR 29003.  [Edward Rudd <eddie omegaware.com>, André Malo]
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  *) mod_ssl: Add "SSLHonorCipherOrder" directive to enable the
     OpenSSL 0.9.7 flag which uses the server's cipher order rather
     than the client's.  PR 28665.
     [Jim Schneider <jschneid netilla.com>]
  *) mod_ssl: Drop support for the CompatEnvVars argument to
     SSLOptions, which was never actually implemented in 2.0.
     [Joe Orton]

  *) Fix bug in mod_deflate that unconditionally sent deflate'd output
     even when Accept-Encoding is not present.  [Justin Erenkrantz]

  *) Pass environment variables through to piped loggers and start
     them via the shell, resolving regressions since 1.3.  PR 28815
     [Ken Coar, Jeff Trawick]
  *) External rewrite map responses are no longer limited to 2048
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  *) Proxy server was deleting cookies that Apache had already
     assigned if the origin server had set any cookies. PR 27023.
     [Jim Jagielski]

  *) Removed old and unmaintained ap_add_named_module API and changed
     the following APIs to return an error instead of hard exiting:
     ap_add_module, ap_add_loaded_module, ap_setup_prelinked_modules,
     and ap_process_resource_config.  [André Malo]
  *) mod_headers: Allow %% in header values to represent a literal %.
  *) mod_headers: Allow env clauses also for 'echo' and 'unset' actions.
  *) mod_headers: Allow 'echo' also for ErrorHeaders.  [André Malo]
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  *) mod_deflate: New option for DEFLATE output file (force-gzip),
     new output filter 'INFLATE' for uncompressing responses.
     [Nick Kew <Nick at WebThing dot com>, Ian Holsman]

  *) Added new module mod_version, which provides version dependent
     configuration containers.  [André Malo]
  *) mod_log_config now logs all Set-Cookie headers if the %{Set-Cookie}o
     format is used.  PR 27787.  [André Malo]
  *) Allow Digest providers to return AUTH_DENIED to propagate a 401
     status and terminate the provider chain prior to checking the password.
     [Geoffrey Young]

  *) mod_cgid: Don't allow Scriptsock to be specified inside VirtualHost;
     Don't place script socket inside default server root instead of
     actual server root.  PR 27886.  [Jeff Trawick]

  *) mod_proxy: Fix handling of non-200 success status codes when
     "ProxyErrorOverride On" is configured.  PR 20183.
     [Marcus Janson <marcus.janson tre.se>, Joe Orton]

  *) Threaded MPMs for Unix and Win32: Add support for ThreadStackSize 
     directive (previously NetWare-only) to override default thread 
     stack size for threads which handle client connections.  Required 
     for some third-party modules on platforms with small default 
     thread stack size.  [Jeff Trawick]
  *) minor mod_auth_basic and mod_auth_digest sync.  mod_auth_basic
     now populates r->user with the (possibly unauthenticated) user,
     and mod_auth_digest returns 500 when a provider returns
     AUTH_GENERAL_ERROR.
     [Geoffrey Young]

  *) The whole codebase was relicensed and is now available under
     the Apache License, Version 2.0 (http://www.apache.org/licenses).
     [Apache Software Foundation]

  *) Delete some make-generated files in the server directory during 
     "make clean" processing.  PR 26552.  [Jeff Trawick]

  *) Add core version query function (ap_get_server_revision) and
     accompanying ap_version_t structure (minor MMN bump).
  *) mod_rewrite: EOLs sent by external rewritemaps are now consumed
     as whole. That way, on systems with more than one EOL character
     rewritemap programs no longer need to switch stdout to binary
  *) mod_rewrite: Introduce the ability to force a content handler via
     the [handler=...] flag.  [André Malo]
  *) mod_rewrite: Introduce the RewriteCond -x check, which returns
     true if the pattern is a file with execution permissions.
  *) mod_rewrite: Allow proxying and RewriteRules in directory context
     for subrequests.  PR 14648, 15114.  [André Malo]
  *) mod_rewrite: Allow setting of any valid HTTP response code.
  *) mod_rewrite: Cookie creation now works locale independent.
  *) mod_ssl: Add support for distributed session cache using 'distcache'.
     [Geoff Thorpe <geoff geoffthorpe.net>]

  *) mod_dav: Disallow requests with an unescaped hash character in
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     the Request-URI.  PR 21779.  [Amit Athavale <amit_athavale lycos.com>]
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  *) mod_proxy with ProxyErrorOverride On in a reverse-proxy configuration
     attaches a body to the 302 response and a wrong Content-Length header.
     PR: 22951 [Ermanno Scaglione scaglione ..at.. starnetone.de]

  *) Bring ErrorHeader concept forward from 1.3, so that response
     header fields can be set for return even on errors or external
     redirects.  [Ken Coar]

  *) Fix <Limit> and <LimitExcept> parsing to require a closing '>' 
     in the initial container.  PR 25414. 
     [Geoffrey Young <geoff apache.org>]

  *) Clean up httpd -V output: Instead of displaying the MPM source
     directory, display the MPM name and some MPM properties.
     [Geoffrey Young <geoff apache.org>]

  *) mod_ssl/mod_status: Re-enable support for output of SSL session
     cache information in server-status page.  [Joe Orton]

  *) mod_ssl: Remove the shmht session cache, shmcb should be used
     instead.  [Joe Orton]

  *) mod_logio: Account for some bytes handed to the network layer prior to
     dropped connections.  [Jeff Trawick]

  *) mod_autoindex: new directive IndexStyleSheet 
    [Tyler Riddle <triddle_1999 yahoo.com>, Paul Querna <chip force-elite.com>]

  *) Fix uninitialized gprof directory name in prefork MPM.  PR 24450.
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     [Chris Knight <Christopher.D.Knight nasa.gov>]
  *) Log an error when requests for URIs which fail to map to a valid 
     filesystem name are rejected with 403.  [Jeff Trawick]

  *) Switch to APR 1.0 API.

  *) Major overhaul of mod_include's filter parser. The new parser code
     is expected to be more robust and should catch all of the edge cases
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     that were not handled by the previous one. This includes a binary
     incompatible change of mod_include's external API.  [André Malo]
  *) mod_rewrite: Allow forced mimetypes [T=...] to get expanded.
  *) mod_rewrite: Fix LA-U and LA-F lookups in directory context. Previously
     the current rewrite state was just used as lookup path, which lead to
     strange and often useless results. Related to PR 8493.  [André Malo]
  *) Change Listen directive to bind to all addresses when a hostname is
     not specified.  [Justin Erenkrantz]

  *) Correct failure with Listen directives on machines with IPv6 enabled.
     [Colm MacCárthaigh <colm stdlib.net>, Justin Erenkrantz]
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  *) Fix a link failure in mod_ssl when the OpenSSL libraries contain
     the ENGINE functions but the engine header files are missing.
     [Cliff Woolley]

  *) mod_rewrite: RewriteRules in server context using the force
     type feature [T=...] no longer disable MultiViews.  [André Malo]
  *) mod_rewrite: Allow piped rewrite logs to be relative to ServerRoot.
  *) mod_authz_groupfile: Strip trailing spaces of group names. This
     hopefully saves some hours of searching for typos. PR 12863.
  *) 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.
  *) mod_speling: Recognize AcceptPathInfo setting for the particular
     location. Default is to reject path information. PR 21059.
  *) mod_ext_filter: Add the ability to filter request bodies.
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     [Philipp Reisner <philipp.reisner linbit.com>]
  *) Fix some broken log messages in WinNT MPM.  
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     [Juan Rivera <Juan.Rivera citrix.com>]
  *) prefork MPM: Use the right permissions for the directory created 
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     for gprof support.  [Jim Carlson <jcarlson jnous.com>]
  *) 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.
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     PR 11310. [Geoff Thorpe <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). 
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     [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.
  *) Extend mod_negotiation to evaluate the environment variables
     no-gzip and gzip-only-text/html the same way as mod_deflate does.
  *) 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]

  *) 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
     for easier debugging. PR 5381, 7638, 8255, 10773.  [André Malo]
  *) Modify buildconf to copy all required files into httpd's tree.
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     [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.
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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
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  *) 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.]

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Changes with Apache 2.0.55
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  *) SECURITY: CAN-2005-2088 (cve.mitre.org)
     proxy: Correctly handle the Transfer-Encoding and Content-Length
     headers.  Discard the request Content-Length whenever T-E: chunked
     is used, always passing one of either C-L or T-E: chunked whenever 
     the request includes a request body.  Resolves an entire class of
     proxy HTTP Request Splitting/Spoofing attacks.  [William Rowe]

  *) Added TraceEnable [on|off|extended] per-server directive to alter
     the behavior of the TRACE method.  This addresses a flaw in proxy
     conformance to RFC 2616 - previously the proxy server would accept
     a TRACE request body although the RFC prohibited it.  The default
     remains 'TraceEnable on'.  [William Rowe]

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  *) Add ap_log_cerror() for logging messages associated with particular
     client connections.  [Jeff Trawick]

  *) Correct mod_cgid's argv[0] so that the full path can be delved by the
     invoked cgi application, to conform to the behavior of mod_cgi.
     [Pradeep Kumar S <pradeep.smani gmail.com>]

  *) mod_include: Fix possible environment variable corruption when 
     using nested includes.  PR 12655.  [Joe Orton]

  *) Support the suppress-error-charset setting, as with Apache 1.3.x.
     PR 31274.  [Jeff Trawick]

  *) EBCDIC: Handle chunked input from client or, with proxy, origin
     server.  [Jeff Trawick]

  *) Fix bad globbing comparison which could result in getting
     a directory listing when a file was requested. PR 34512.
     [sean <infamous41md hotmail.com>]

  *) Fix core dump if mod_auth_ldap's mod_auth_ldap_auth_checker()
     was called even if mod_auth_ldap_check_user_id() was not
     (or if it didn't succeed) for non-authoritative cases.
     [Jim Jagielski]

  *) SECURITY: CAN-2005-2728 (cve.mitre.org)
     Fix cases where the byterange filter would buffer responses
     into memory.  PR 29962.  [Joe Orton]

  *) mod_proxy: Fix over-eager handling of '%' for reverse proxies.
     PR 15207.  [Jim Jagielski]

  *) mod_ldap: Fix various shared memory cache handling bugs.
     PR 34209.  [Joe Orton]

  *) Fix a file descriptor leak when starting piped loggers.  PR 33748. 
     [Joe Orton]

  *) mod_ldap: Avoid segfaults when opening connections if using a version
     of OpenLDAP older than 2.2.21.  PR 34618.  [Brad Nicholes]

  *) mod_ssl: Fix build with OpenSSL 0.9.8.  PR 35757.  [William Rowe]

  *) SECURITY: CAN-2005-2088 (cve.mitre.org)
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     core: If a request contains both Transfer-Encoding and Content-Length
     headers, remove the Content-Length, mitigating some HTTP Request 
     Splitting/Spoofing attacks.  [Paul Querna, Joe Orton]

  *) proxy HTTP: If a response contains both Transfer-Encoding and a 
     Content-Length, remove the Content-Length and don't reuse the
     connection, mitigating some HTTP Response Splitting attacks.
     [Jeff Trawick]

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  *) Prevent hangs of child processes when writing to piped loggers at
     the time of graceful restart.  PR 26467.  [Jeff Trawick]

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  *) SECURITY: CAN-2005-1268 (cve.mitre.org)
     mod_ssl: Fix off-by-one overflow whilst printing CRL information
     at "LogLevel debug" which could be triggered if configured 
     to use a "malicious" CRL.  PR 35081.  [Marc Stern <mstern csc.com>]

  *) mod_userdir: Fix possible memory corruption issue.  PR 34588.
     [David Leonard <dleonard vintela.com>]

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  *) worker mpm: don't take down the whole server for a transient
     thread creation failure. PR 34514 [Greg Ames]
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  *) mod_rewrite: use buffered I/O to improve performance with large
     RewriteMap txt: files.  [Greg Ames]

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  *) proxy HTTP: Rework the handling of request bodies to handle
     chunked input and input filters which modify content length, and
     avoid spooling arbitrary-sized request bodies in memory.
     PR 15859.  [Jeff Trawick]

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Changes with Apache 2.0.54

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  *) mod_cache: Add CacheIgnoreHeaders directive.  PR 30399.
     [Rüdiger Plüm <r.pluem t-online.de>]
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  *) mod_ldap: Added the directive LDAPConnectionTimeout to configure
     the ldap socket connection timeout value.  
     [Brad Nicholes]

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  *) Correctly export all mod_dav public functions.
     [Branko Čibej <brane xbc.nu>]

  *) Add a build script to create a solaris package. [Graham Leggett]

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  *) worker MPM: Fix a problem which could cause httpd processes to
     remain active after shutdown.  [Jeff Trawick]

  *) Unix MPMs: Shut down the server more quickly when child processes are
     slow to exit.  [Joe Orton, Jeff Trawick]