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                                                         -*- coding: utf-8 -*-
Changes with Apache 2.2.16

  *) SECURITY: CVE-2010-1452 (cve.mitre.org)
     mod_dav, mod_cache: Fix Handling of requests without a path segment.
     PR: 49246 [Mark Drayton, Jeff Trawick]

  *) SECURITY: CVE-2010-2068 (cve.mitre.org)
     mod_proxy_ajp, mod_proxy_http, mod_reqtimeout: Fix timeout detection
     for platforms Windows, Netware and OS2.  PR: 49417. [Rainer Jung]

  *) core: Filter init functions are now run strictly once per request
     before handler invocation.  The init functions are no longer run
     for connection filters.  PR 49328.  [Joe Orton]

  *) mod_filter: enable it to act on non-200 responses.
     PR 48377 [Nick Kew]

  *) mod_ldap: LDAP caching was suppressed (and ldap-status handler returns
     title page only) when any mod_ldap directives were used in VirtualHost
     context.  [Eric Covener]

  *) mod_ssl: Fix segfault at startup if proxy client certs are shared
     across multiple vhosts.  PR 39915.  [Joe Orton]

  *) mod_proxy_http: Log the port of the remote server in various messages.
     PR 48812. [Igor Galić <i galic brainsware org>] 

  *) apxs: Fix -A and -a options to ignore whitespace in httpd.conf
     [Philip M. Gollucci]

  *) mod_dir: add FallbackResource directive, to enable admin to specify
     an action to happen when a URL maps to no file, without resorting
     to ErrorDocument or mod_rewrite.  PR 47184 [Nick Kew]

  *) mod_rewrite: Allow to set environment variables without explicitely
     giving a value. [Rainer Jung]


Changes with Apache 2.2.15

  *) SECURITY: CVE-2009-3555 (cve.mitre.org)
     mod_ssl: Comprehensive fix of the TLS renegotiation prefix injection
     attack when compiled against OpenSSL version 0.9.8m or later. Introduces
     the 'SSLInsecureRenegotiation' directive to reopen this vulnerability
     and offer unsafe legacy renegotiation with clients which do not yet
     support the new secure renegotiation protocol, RFC 5746.
     [Joe Orton, and with thanks to the OpenSSL Team]

  *) SECURITY: CVE-2009-3555 (cve.mitre.org)
     mod_ssl: A partial fix for the TLS renegotiation prefix injection attack
     for OpenSSL versions prior to 0.9.8l; reject any client-initiated
     renegotiations. Forcibly disable keepalive for the connection if there
     is any buffered data readable. Any configuration which requires
     renegotiation for per-directory/location access control is still
     vulnerable, unless using openssl 0.9.8l or later.
     [Joe Orton, Ruediger Pluem, Hartmut Keil <Hartmut.Keil adnovum.ch>]

  *) SECURITY: CVE-2010-0408 (cve.mitre.org)
     mod_proxy_ajp: Respond with HTTP_BAD_REQUEST when the body is not sent
     when request headers indicate a request body is incoming; not a case of
     HTTP_INTERNAL_SERVER_ERROR.  [Niku Toivola <niku.toivola sulake.com>]

  *) SECURITY: CVE-2010-0425 (cve.mitre.org)
     mod_isapi: Do not unload an isapi .dll module until the request
     processing is completed, avoiding orphaned callback pointers.
     [Brett Gervasoni <brettg senseofsecurity.com>, Jeff Trawick]

  *) SECURITY: CVE-2010-0434 (cve.mitre.org)
     Ensure each subrequest has a shallow copy of headers_in so that the
     parent request headers are not corrupted.  Eliminates a problematic
     optimization in the case of no request body.  PR 48359.
     [Jake Scott, William Rowe, Ruediger Pluem]

  *) mod_reqtimeout: New module to set timeouts and minimum data rates for
     receiving requests from the client. [Stefan Fritsch]

  *) mod_proxy_ajp: Really regard the operation a success, when the client
     aborted the connection. In addition adjust the log message if the client
     aborted the connection. [Ruediger Pluem]

  *) mod_negotiation: Preserve query string over multiviews negotiation.
     This buglet was fixed for type maps in 2.2.6, but the same issue
     affected multiviews and was overlooked.
     PR 33112.  [Joergen Thomsen <apache jth.net>]

  *) mod_cache: Introduce the thundering herd lock, a mechanism to keep
     the flood of requests at bay that strike a backend webserver as
     a cached entity goes stale. [Graham Leggett]

  *) mod_proxy_http: Make sure that when an ErrorDocument is served
     from a reverse proxied URL, that the subrequest respects the status
     of the original request. This brings the behaviour of proxy_handler
     in line with default_handler. PR 47106. [Graham Leggett]

  *) mod_log_config: Add the R option to log the handler used within the
     request. [Christian Folini <christian.folini netnea com>]

  *) mod_include: Allow fine control over the removal of Last-Modified and
     ETag headers within the INCLUDES filter, making it possible to cache
     responses if desired. Fix the default value of the SSIAccessEnable
     directive. [Graham Leggett]

  *) mod_ssl: Fix a potential I/O hang if a long list of trusted CAs
     is configured for client cert auth. PR 46952.  [Joe Orton]

  *) core: Fix potential memory leaks by making sure to not destroy
     bucket brigades that have been created by earlier filters.
     [Stefan Fritsch]

  *) mod_authnz_ldap: Add AuthLDAPBindAuthoritative to allow Authentication to
     try other providers in the case of an LDAP bind failure.
     PR 46608.  [Justin Erenkrantz, Joe Schaefer, Tony Stevenson]

  *) mod_proxy, mod_proxy_http: Support remote https proxies
     by using HTTP CONNECT.
     PR 19188.  [Philippe Dutrueux <lilas evidian.com>, Rainer Jung]

  *) worker: Don't report server has reached MaxClients until it has.
     Add message when server gets within MinSpareThreads of MaxClients.
     PR 46996.  [Dan Poirier]

  *) mod_ssl: When extracting certificate subject/issuer names to the
     SSL_*_DN_* variables, handle RDNs with duplicate tags by
     exporting multiple varialables with an "_n" integer suffix.
     PR 45875.  [Joe Orton, Peter Sylvester <peter.sylvester edelweb.fr>]

  *) mod_authnz_ldap: Failures to map a username to a DN, or to check a user
     password now result in an informational level log entry instead of 
     warning level.  [Eric Covener]

  *) core: Preserve Port information over internal redirects
     PR 35999.  [Jonas Ringh <jonas.ringh cixit.se>]

  *) mod_filter: fix FilterProvider matching where "dispatch" string
     doesn't exist.
     PR 48054.  [<tietew gmail.com>]

  *) Build: fix --with-module to work as documented
     PR 43881.  [Gez Saunders <gez.saunders virgin.net>]

  *) mod_mime: Make RemoveType override the info from TypesConfig.
     PR 38330.  [Stefan Fritsch]

  *) mod_proxy: unable to connect to a backend is SERVICE_UNAVAILABLE,
     rather than BAD_GATEWAY or (especially) NOT_FOUND.
     PR 46971.  [Evan Champion <evanc nortel.com>]

  *) mod_charset_lite: Honor 'CharsetOptions NoImplicitAdd'.
     [Eric Covener]

  *) mod_ldap: If LDAPSharedCacheSize is too small, try harder to purge
     some cache entries and log a warning. Also increase the default
     LDAPSharedCacheSize to 500000. This is a more realistic size suitable
     for the default values of 1024 for LdapCacheEntries/LdapOpCacheEntries.
     PR 46749.  [Stefan Fritsch]

  *) mod_disk_cache, mod_mem_cache: don't cache incomplete responses,
     per RFC 2616, 13.8.  PR15866.  [Dan Poirier]

  *) mod_rewrite: Make sure that a hostname:port isn't fully qualified if
     the request is a CONNECT request.  PR 47928.
     [Bill Zajac <billz consultla.com>]

  *) mod_cache: correctly consider s-maxage in cacheability
     decisions.  [Dan Poirier]

  *) core: Return APR_EOF if request body is shorter than the length announced
     by the client. PR 33098.  [Stefan Fritsch]

  *) mod_rewrite: Add scgi scheme detection.  [André Malo]

  *) mod_mime: Detect invalid use of MultiviewsMatch inside Location and
     LocationMatch sections.  PR 47754.  [Dan Poirier]

  *) ab, mod_ssl: Restore compatibility with OpenSSL < 0.9.7g.
     [Guenter Knauf]

Changes with Apache 2.2.14

  *) SECURITY: CVE-2009-2699 (cve.mitre.org)
     Fixed in APR 1.3.9.  Faulty error handling in the Solaris pollset support
     (Event Port backend) which could trigger hangs in the prefork and event
     MPMs on that platform.  PR 47645.  [Jeff Trawick]

  *) SECURITY: CVE-2009-3095 (cve.mitre.org)
     mod_proxy_ftp: sanity check authn credentials.
     [Stefan Fritsch <sf fritsch.de>, Joe Orton]

  *) SECURITY: CVE-2009-3094 (cve.mitre.org)
     mod_proxy_ftp: NULL pointer dereference on error paths.
     [Stefan Fritsch <sf fritsch.de>, Joe Orton]

  *) mod_proxy_scgi: Backport from trunk. [André Malo]

  *) mod_ldap: Don't try to resolve file-based user ids to a DN when AuthLDAPURL
     has been defined at a very high level.  PR 45946.  [Eric Covener]

  *) htcacheclean: 19 ways to fail, 1 error message. Fixed. [Graham Leggett]

  *) mod_ldap: Bring the LDAPCacheEntries and LDAPOpCacheEntries
     usage() in synch with the manual and the implementation (0 and -1
     both disable the cache). [Eric Covener]

  *) mod_ssl: The error message when SSLCertificateFile is missing should
     at least give the name or position of the problematic virtual host
     definition. [Stefan Fritsch sf sfritsch.de]

  *) htdbm: Fix possible buffer overflow if dbm database has very
     long values.  PR 30586 [Dan Poirier]

  *) Add support for HTTP PUT to ab. [Jeff Barnes <jbarnesweb yahoo.com>]

  *) mod_ssl: Fix SSL_*_DN_UID variables to use the 'userID' attribute
     type.  PR 45107.  [Michael Ströder <michael stroeder.com>,
     Peter Sylvester <peter.sylvester edelweb.fr>]

  *) mod_cache: Add CacheIgnoreURLSessionIdentifiers directive to ignore
     defined session identifiers encoded in the URL when caching.
     [Ruediger Pluem]

  *) mod_mem_cache: fix seg fault under load due to pool concurrency problem
     PR: 47672 [Dan Poirier <poirier pobox.com>]

  *) mod_autoindex: Correctly create an empty cell if the description
     for a file is missing. PR 47682 [Peter Poeml <poeml suse.de>]

Changes with Apache 2.2.13

  *) SECURITY: CVE-2009-2412 (cve.mitre.org)
     Distributed with APR 1.3.8 and APR-util 1.3.9 to fix potential overflow
     in pools and rmm, where size alignment was taking place.
     [Matt Lewis <mattlewis@google.com>, Sander Striker]

  *) mod_ssl, ab: improve compatibility with OpenSSL 1.0.0 betas.  Report
     warnings compiling mod_ssl against OpenSSL to the httpd developers.
     [Guenter Knauf]

  *) mod_cgid: Do not add an empty argument when calling the CGI script.
     PR 46380 [Ruediger Pluem]

  *) Fix potential segfaults with use of the legacy ap_rputs() etc
     interfaces, in cases where an output filter fails.  PR 36780.
     [Joe Orton]

Changes with Apache 2.2.12

  *) SECURITY: CVE-2009-1891 (cve.mitre.org)
     Fix a potential Denial-of-Service attack against mod_deflate or other 
     modules, by forcing the server to consume CPU time in compressing a 
     large file after a client disconnects.  PR 39605.
     [Joe Orton, Ruediger Pluem]

  *) SECURITY: CVE-2009-1195 (cve.mitre.org)
     Prevent the "Includes" Option from being enabled in an .htaccess 
     file if the AllowOverride restrictions do not permit it.
     [Jonathan Peatfield <j.s.peatfield damtp.cam.ac.uk>, Joe Orton,
      Ruediger Pluem, Jeff Trawick]

  *) SECURITY: CVE-2009-1890 (cve.mitre.org) 
     Fix a potential Denial-of-Service attack against mod_proxy in a
     reverse proxy configuration, where a remote attacker can force a
     proxy process to consume CPU time indefinitely.  [Nick Kew, Joe Orton]

  *) SECURITY: CVE-2009-1191 (cve.mitre.org)
     mod_proxy_ajp: Avoid delivering content from a previous request which
     failed to send a request body. PR 46949 [Ruediger Pluem]

  *) SECURITY: CVE-2009-0023, CVE-2009-1955, CVE-2009-1956 (cve.mitre.org)
     The bundled copy of the APR-util library has been updated, fixing three
     different security issues which may affect particular configurations
     and third-party modules.

  *) mod_include: fix potential segfault when handling back references
     on an empty SSI variable. [Ruediger Pluem, Lars Eilebrecht, Nick Kew]

  *) mod_alias: check sanity in Redirect arguments.
     PR 44729 [Sönke Tesch <st kino-fahrplan.de>, Jim Jagielski]

  *) mod_proxy_http: fix Host: header for literal IPv6 addresses.
     PR 47177 [Carlos Garcia Braschi <cgbraschi gmail.com>]

  *) mod_rewrite: Remove locking for writing to the rewritelog.
     PR 46942

  *) mod_alias: Ensure Redirect emits HTTP-compliant URLs.
     PR 44020

  *) mod_proxy_http: fix case sensitivity checking transfer encoding
     PR 47383 [Ryuzo Yamamoto <ryuzo.yamamoto gmail.com>]

  *) mod_rewrite: Fix the error string returned by RewriteRule.
     RewriteRule returned "RewriteCond: bad flag delimiters" when the 3rd
     argument of RewriteRule was not started with "[" or not ended with "]".
     PR 45082 [Vitaly Polonetsky <m_vitaly topixoft.com>]

  *) mod_proxy: Complete ProxyPassReverse to handle balancer URL's.  Given;
       BalancerMember balancer://alias http://example.com/foo
       ProxyPassReverse /bash balancer://alias/bar
     backend url http://example.com/foo/bar/that is now translated /bash/that
     [William Rowe]

  *) New piped log syntax: Use "||process args" to launch the given process
     without invoking the shell/command interpreter.  Use "|$command line"
     (the default behavior of "|command line" in 2.2) to invoke using shell,
     consuming an additional shell process for the lifetime of the logging
     pipe program but granting additional process invocation flexibility.
     [William Rowe]

  *) mod_ssl: Add server name indication support (RFC 4366) and better
     support for name based virtual hosts with SSL. PR 34607
     [Peter Sylvester <peter.sylvester edelweb.fr>,
      Kaspar Brand <asfbugz velox.ch>, Guenter Knauf, Joe Orton,
      Ruediger Pluem]

  *) mod_negotiation: Escape pathes of filenames in 406 responses to avoid
     HTML injections and HTTP response splitting.  PR 46837.
     [Geoff Keating <geoffk apple.com>]

  *) mod_include: Prevent a case of SSI timefmt-smashing with filter chains
     including multiple INCLUDES filters. PR 39369 [Joe Orton]

  *) mod_rewrite: When evaluating a proxy rule in directory context, do
     escape the filename by default. PR 46428 [Joe Orton]

  *) mod_proxy_ajp: Check more strictly that the backend follows the AJP
     protocol. [Mladen Turk]

  *) mod_ssl: Add SSLProxyCheckPeerExpire and SSLProxyCheckPeerCN directives
     to enable stricter checking of remote server certificates.
     [Ruediger Pluem]

  *) mod_substitute: Fix a memory leak. PR 44948
     [Dan Poirier <poirier pobox.com>]

  *) mod_proxy_ajp: Forward remote port information by default.
     [Rainer Jung]

  *) mod_disk_cache/mod_mem_cache: Fix handling of CacheIgnoreHeaders
     directive to correctly remove headers before storing them.
     [Lars Eilebrecht]

  *) mod_deflate: revert changes in 2.2.8 that caused an invalid
     etag to be emitted for on-the-fly gzip content-encoding.
     PR 39727 will require larger fixes and this fix was far more
     harmful than the original code. PR 45023. [Roy T. Fielding]

  *) mod_disk_cache: The module now turns off sendfile support if
     'EnableSendfile off' is defined globally. PR 41218.
     [Lars Eilebrecht, Issac Goldstand]

  *) prefork: Fix child process hang during graceful restart/stop in
     configurations with multiple listening sockets.  PR 42829.  [Joe Orton,
     Jeff Trawick]

  *) mod_ssl: Add SSLRenegBufferSize directive to allow changing the
     size of the buffer used for the request-body where necessary
     during a per-dir renegotiation.  PR 39243.  [Joe Orton]

  *) mod_rewrite: Introduce DiscardPathInfo|DPI flag to stop the troublesome
     way that per-directory rewrites append the previous notion of PATH_INFO
     to each substitution before evaluating subsequent rules. 
     PR38642 [Eric Covener]

  *) mod_authnz_ldap: Reduce number of initialization debug messages and make
     information more clear. PR 46342 [Dan Poirier]

  *) mod_cache: Introduce 'no-cache' per-request environment variable
     to prevent the saving of an otherwise cacheable response.
     [Eric Covener]

  *) core: Translate the status line to ASCII on EBCDIC platforms in
     ap_send_interim_response() and for locally generated "100 Continue"
     responses.  [Eric Covener]

  *) CGI: return 504 (Gateway timeout) rather than 500 when a script
     times out before returning status line/headers.
     PR 42190 [Nick Kew]

  *) prefork: Log an error instead of segfaulting when child startup fails
     due to pollset creation failures.  PR 46467.  [Jeff Trawick]

  *) mod_ext_filter: fix error handling when the filter prog fails to start,
     and introduce an onfail configuration option to abort the request
     or to remove the broken filter and continue.
     PR 41120 [Nick Kew]

  *) mod_include: support generating non-ASCII characters as entities in SSI
     PR 25202 [Nick Kew] 

  *) core/utils: Enhance ap_escape_html API to support escaping non-ASCII
     chars [Nick Kew]

  *) mod_rewrite: fix "B" flag breakage by reverting r589343
     PR 45529 [Bob Ionescu <bobsiegen googlemail.com>]

  *) mod_cgid: fix segfault problem on solaris.
     PR 39332 [Masaoki Kobayashi <masaoki techfirm.co.jp>, Jeff Trawick]

  *) mod_ldap: Avoid a segfault when result->rc is checked in
     uldap_connection_init when result is NULL. This could happen if LDAP
     initialization failed.  PR 45994. [Dan Poirier <poirier pobox.com>]

  *) Set Listen protocol to "https" if port is set to 443 and no proto is
     specified (as documented but not implemented). PR 46066
     [Dan Poirier <poirier pobox.com>]

  *) mod_cache: Correctly save Content-Encoding of cachable entity. PR 46401
     [Dan Poirier <poirier pobox.com>]

  *) Output -M and -S dumps (modules and vhosts) to stdout instead of stderr.
     PR 42571 and PR 44266 (dup).  [Dan Poirier <poirier pobox.com>]

  *) mod_cache: When an explicit Expires or Cache-Control header is set, cache
     normally non-cacheable response statuses. PR 46346.
     [Alex Polvi <alex polvi.net>]

Changes with Apache 2.2.11

  *) core: When the ap_http_header_filter processes an error bucket, cleanup
     the passed brigade before returning AP_FILTER_ERROR down the filter 
     chain. This unambiguously ensures the same error bucket isn't revisited
     [Ruediger Pluem]

  *) core: Error responses set by filters were being coerced into 500 errors,
     sometimes appended to the original error response. Log entry of:
     'Handler for (null) returned invalid result code -3'
     [Eric Covener]

  *) configure: Don't reject libtool 2.x
     PR 44817 [Arfrever Frehtes Taifersar Arahesis <Arfrever.FTA gmail.com>]

  *) mod_autoindex: add configuration option to insert string
     in HTML HEAD (IndexHeadInsert). [Nick Kew]

  *) Add new LogFormat parameter, %k, which logs the number of
     keepalive requests on this connection for this request.
     PR 45762 [Dan Poirier <poirier pobox.com>, Jim Jagielski]

  *) Export and install the mod_rewrite.h header to ensure the optional
     rewrite_mapfunc_t and ap_register_rewrite_mapfunc functions are
     available to third party modules. [Graham Leggett]

  *) mod_cache: Convert age of cached object to seconds before comparing it to
     age supplied by the request when checking whether to send a Warning
     header for a stale response. PR 39713. [Owen Taylor <otaylor redhat.com>]

  *) Build: Correctly set SSL_LIBS during openssl detection if pkgconfig is
     not available. PR 46018 [Ruediger Pluem]

  *) mod_proxy_ajp: Do not fail if response data is sent before all request
     data is read. PR 45911 [Ruediger Pluem]

  *) mod_proxy_balancer: Add in forced recovery for balancer members if
     all are in error state. [Mladen Turk]

  *) mod_proxy: Prevent segmentation faults by correctly adjusting the
     lifetime of the buckets read from the proxy backend. PR 45792
     [Ruediger Pluem]

  *) mod_expires: Do not sets negative max-age / Expires header in the past.
     PR 39774 [Jim Jagielski]

  *) mod_info: Was displaying the wrong value for the KeepAliveTimeout
     value. [Jim Jagielski]

  *) mod_proxy_ajp: Fix wrongly formatted requests where client
     sets Content-Length header, but doesn't provide a body.
     Servlet container always expects that next packet is
     body whenever C-L is present in the headers. This can lead
     to wrong interpretation of the packets. In this case
     send the empty body packet, so container can deal with
     that. [Mladen Turk]

  *) core: Add ap_timeout_parameter_parse to public API. [Ruediger Pluem]

  *) mod_proxy: Add the possibility to set the worker parameters
     connectiontimeout and ping in milliseconds. [Ruediger Pluem]

  *) Worker MPM: Crosscheck that idle workers are still available before using
     them and thus preventing an overflow of the worker queue which causes
     a SegFault. PR 45605 [Denis Ustimenko <denusk gmail.com>]

  *) Windows: Always build the odbc dbd driver on windows, to be consistent 
     with the apr-util default. [Tom Donovan]

Changes with Apache 2.2.10

  *) SECURITY: CVE-2008-2939 (cve.mitre.org)
     mod_proxy_ftp: Prevent XSS attacks when using wildcards in the path of
     the FTP URL. Discovered by Marc Bevand of Rapid7. [Ruediger Pluem]

  *) Allow for smax to be 0 for balancer members so that all idle
     connections are able to be dropped should they exceed ttl.
     PR 43371 [Phil Endecott <spam_from_apache_bugzilla chezphil.org>,
     Jim Jagielski]

  *) mod_proxy_http: Don't trigger a retry by the client if a failure to
     read the response line was the result of a timeout.
     [Adam Woodworth <mirkperl gmail.com>]

  *) Support chroot on Unix-family platforms
     PR 43596 [Dimitar Pashev <mitko banksoft-bg.com>]

  *) mod_ssl: implement dynamic mutex callbacks for the benefit of
     OpenSSL.  [Sander Temme]

  *) mod_proxy_balancer: Add 'bybusyness' load balance method.
     [Joel Gluth <joelgluth yahoo.com.au>, Jim Jagielski]

  *) mod_authn_alias: Detect during startup when AuthDigestProvider
     is configured to use an incompatible provider via AuthnProviderAlias.
     PR 45196 [Eric Covener]

  *) mod_proxy: Add 'scolonpathdelim' parameter to allow for ';' to also be
     used as a session path separator/delim  PR 45158. [Jim Jagielski]

  *) mod_charset_lite: Avoid dropping error responses by handling meta buckets
     correctly. PR 45687 [Dan Poirier <poirier pobox.com>]

  *) mod_proxy_http: Introduce environment variable proxy-initial-not-pooled
     to avoid reusing pooled connections if the client connection is an
     initial connection. PR 37770. [Ruediger Pluem]

  *) mod_rewrite: Allow Cookie option to set secure and HttpOnly flags.
     PR 44799 [Christian Wenz <christian wenz.org>]

  *) mod_ssl: Rewrite shmcb to avoid memory alignment issues.  PR 42101.
     [Geoff Thorpe]

  *) mod_proxy: Add connectiontimeout parameter for proxy workers in order to
     be able to set the timeout for connecting to the backend separately.
     PR 45445. [Ruediger Pluem, rahul <rahul sun.com>]

  *) mod_dav_fs: Retrieve minimal system information about directory
     entries when walking a DAV fs, resolving a performance degradation on
     Windows.  PR 45464.  [Joe Orton, Jeff Trawick]

  *) mod_cgid: Pass along empty command line arguments from an ISINDEX
     query that has consecutive '+' characters in the QUERY_STRING,
     matching the behavior of mod_cgi.
     [Eric Covener]

  *) mod_headers: Prevent Header edit from processing only the first header
     of possibly multiple headers with the same name and deleting the
     remaining ones. PR 45333.  [Ruediger Pluem]

  *) mod_proxy_balancer: Move nonce field in the balancer manager page inside
     the html form where it belongs. PR 45578. [Ruediger Pluem]

  *) mod_proxy_http: Do not forward requests with 'Expect: 100-continue' to
     known HTTP/1.0 servers. Return 'Expectation failed' (417) instead.
     [Ruediger Pluem]

  *) mod_rewrite: Preserve the query string when [proxy,noescape]. PR 45247.
     [Tom Donovan]

Changes with Apache 2.2.9

  *) SECURITY: CVE-2008-2364 (cve.mitre.org)
     mod_proxy_http: Better handling of excessive interim responses
     from origin server to prevent potential denial of service and high
     memory usage. Reported by Ryujiro Shibuya. [Ruediger Pluem,
     Joe Orton, Jim Jagielski]

  *) SECURITY: CVE-2007-6420 (cve.mitre.org)
     mod_proxy_balancer: Prevent CSRF attacks against the balancer-manager
     interface.  [Joe Orton]

  *) core: Fix address-in-use startup failure on some platforms caused
     by creating an IPv4 listener which overlaps with an existing IPv6
     listener.  [Jeff Trawick]

  *) mod_proxy: Make all proxy modules nocanon aware and do not add the
     query string again in this case. PR 44803.
     [Jim Jagielski, Ruediger Pluem]

  *) mod_unique_id: Fix timestamp value in UNIQUE_ID.
     PR 37064 [Kobayashi <kobayashi firstserver.co.jp>]

  *) htpasswd: Fix salt generation weakness. PR 31440
     [Andreas Krennmair <ak synflood.at>, Peter Watkins <peterw tux.org>,
     Paul Querna]

  *) core: Add the filename of the configuration file to the warning message
     about the useless use of AllowOverride. PR 39992.
     [Darryl Miles <darryl darrylmiles.org>]

  *) scoreboard: Remove unused proxy load balancer elements from scoreboard
     image (not scoreboard memory itself).  [Chris Darroch]

  *) mod_proxy: Support environment variable interpolation in reverse
     proxying directives. [Nick Kew]

  *) suexec: When group is given as a numeric gid, validate it by looking up
     the actual group name such that the name can be used in log entries.
     PR 7862 [<y-koga apache.or.jp>, Leif W <warp-9.9 usa.net>]

  *) Fix garbled TRACE response on EBCDIC platforms.
     [David Jones <oscaremma gmail.com>]

  *) ab: Include <limits.h> earlier if available since we may need
     INT_MAX (defined there on Windows) for the definition of MAX_REQUESTS.
     PR 45024 [Ruediger Pluem]

  *) ab: Improve client performance by clearing connection pool instead
     of destroying it. PR 40054 [Brad Roberts <braddr puremagic.com>]

  *) ab: Don't stop sending a request if EAGAIN is returned, which
     will only happen if both the write and subsequent wait are
     returning EAGAIN, and count posted bytes correctly when the initial
     write of a request is not complete. PR 10038, 38861, 39679
     [Patrick McManus <mcmanus datapower.com>,
      Stefan Fleiter <stefan.fleiter web.de>,
      Davanum Srinivas, Roy T. Fielding]

  *) ab: Overhaul stats collection and reporting to avoid integer
     truncation and time divisions within the test loop, retain
     native time resolution until output, remove unused data,
     consistently round milliseconds, and generally avoid losing
     accuracy of calculation due to type casts. PR 44878, 44931.
     [Roy T. Fielding]

  *) ab: Add -r option to continue after socket receive errors.
     [Filip Hanik <devlist hanik.com>]

  *) core: Do not allow Options ALL if not all options are allowed to be
     overwritten. PR 44262 [Michał Grzędzicki <lazy iq.pl>]

  *) mod_cache: Handle If-Range correctly if the cached resource was stale.
     PR 44579 [Ruediger Pluem]

  *) mod_proxy: Do not try a direct connection if the connection via a
     remote proxy failed before and the request has a request body.
     [Ruediger Pluem]

  *) mod_proxy_ajp: Do not retry request in the case that we either failed to
     sent a part of the request body or if the request is not idempotent.
     PR 44334 [Ruediger Pluem]

  *) mod_rewrite: Initialize hash needed by ap_register_rewrite_mapfunc early
     enough. PR 44641 [Daniel Lescohier <daniel.lescohier cnet.com>]

  *) mod_dav: Return "method not allowed" if the destination URI of a WebDAV
     copy / move operation is no DAV resource. PR 44734 [Ruediger Pluem]

  *) http_filters: Don't return 100-continue on redirects. PR 43711
     [Ruediger Pluem]

  *) mod_ssl: Fix a memory leak with connections that have zlib compression
     turned on. PR 44975 [Joe Orton, Amund Elstad <Amund.Elstad ist.com>,
     Dr Stephen Henson <steve openssl.org>]

  *) mod_proxy: Trigger a retry by the client in the case we fail to read the
     response line from the backend by closing the connection to the client.
     PR 37770 [Ruediger Pluem]

  *) gen_test_char: add double-quote to the list of T_HTTP_TOKEN_STOP.
     PR 9727 [Ville Skytt <ville.skytta iki.fi>]

  *) core: reinstate location walk to fix config for subrequests
     PR 41960 [Jose Kahan <jose w3.org>]

  *) rotatelogs: Log the current file size and error code/description
     when failing to write to the log file.  [Jeff Trawick]

  *) rotatelogs: Added '-f' option to force rotatelogs to create the
     logfile as soon as started, and not wait until it reads the
     first entry. [Jim Jagielski]

  *) rotatelogs: Don't leak memory when reopening the logfile.
     PR 40183 [Ruediger Pluem, Takashi Sato <serai lans-tv.com>]

  *) rotatelogs: Improve atomicity when using -l and cleaup code.
     PR 44004 [Rainer Jung]

  *) mod_authn_dbd: Disambiguate and tidy database authentication
     error messages.  PR 43210.  [Chris Darroch, Phil Endecott
     <spam_from_apache_bugzilla chezphil.org>]

  *) mod_headers: Add 'merge' option to avoid duplicate values within
     the same header. [Chris Darroch]

  *) mod_cgid: Explicitly set permissions of the socket (ScriptSock) shared by
     mod_cgid and request processing threads, for OS'es such as HPUX and AIX
     that do not use umask for AF_UNIX socket permissions.
     [Eric Covener, Jeff Trawick]

  *) mod_cgid: Don't try to restart the daemon if it fails to initialize
     the socket.  [Jeff Trawick]

  *) mod_log_config: Add format options for %p so that the actual local
     or remote port can be logged.  PR 43415.  [Adam Hasselbalch Hansen
     <ahh@one.com>, Ruediger Pluem, Jeff Trawick]

  *) Added 'disablereuse' option for ProxyPass which, essentially,
     disables connection pooling for the backend servers.
     [Jim Jagielski]

  *) mod_speling: remove regression from 1.3/2.0 behavior and
     drop dependency between mod_speling and AcceptPathInfo.
     PR 43562 [Jose Kahan <jose w3.org>]

  *) mod_substitute: The default is now flattening the buckets after
     each substitution. The newly added 'q' flag allows for the
     quicker, more efficient bucket-splitting if the user so
     desires. [Jim Jagielski]

  *) http_filters: Don't spin if get an error when reading the
     next chunk. PR 44381 [Ruediger Pluem]

  *) ab: Do not try to read non existing response bodies of HEAD requests.
     PR 34275 [Takashi Sato <serai lans-tv.com>]

  *) ab: Use a 64 bit unsigned int instead of a signed long to count the
     bytes transferred to avoid integer overflows. PR 44346 [Ruediger Pluem]

  *) ProxyPassReverse is now balancer aware. [Jim Jagielski]

  *) mod_include: Correctly handle SSI directives split over multiple filter
     passes.  PR 44447 [Harald Niesche <harald brokenerror.de>]

  *) mod_cache: Revalidate cache entities which have Cache-Control: no-cache
     set in their response headers. PR 44511 [Ruediger Pluem]

  *) mod_rewrite: Check all files used by DBM maps for freshness, mod_rewrite
     didn't pick up on updated sdbm maps due to this.
     PR41190 [Niklas Edmundsson]

  *) mod_proxy: Lower memory consumption for short lived connections.
     PR 44026. [Ruediger Pluem]

  *) mod_proxy: Keep connections to the backend persistent in the HTTPS case.
     [Ruediger Pluem]

  *) Don't add bogus duplicate Content-Language entries
     PR 11035 [Davi Arnaut]

  *) Worker / Event MPM: Fix race condition in pool recycling that leads to
     segmentation faults under load.  PR 44402
     [Basant Kumar Kukreja <basant.kukreja sun.com>]

  *) mod_proxy_ftp: Fix base for directory listings.
     PR 27834 [Nick Kew]

  *) mod_logio: Provide optional function to allow modules to adjust the 
     bytes_in count [Eric Covener]

  *) http_filters: Don't return 100-continue on client error
     PR 43711 [Chetan Reddy <chetanreddy gmail.com>]

  *) mod_charset_lite: Add TranslateAllMimeTypes sub-option to
     CharsetOptions, allowing the administrator to skip the
     mimetype checking that precedes translation.
     PR 44458 [Eric Covener]

  *) mod_proxy_http: Fix processing of chunked responses if
     Connection: Transfer-Encoding is set in the response of the proxied
     system. PR 44311 [Ruediger Pluem]

  *) mod_proxy_http: Return HTTP status codes instead of apr_status_t
     values for errors encountered while forwarding the request body
     PR 44165 [Eric Covener]

  *) mod_rewrite: Don't canonicalise URLs with [P,NE]
     PR 43319 [<rahul sun.com>]

Changes with Apache 2.2.8

  *) core: Fix regression in 2.2.7 in chunk filtering with massively
     chunked requests.  [Ruediger Pluem, Nick Kew]

  *) winnt_mpm: Resolve modperl issues by redirecting console mode stdout
     to /Device/Nul as the server is starting up, mirroring unix MPM's.
     PR: 43534  [Tom Donovan <Tom.Donovan acm.org>, William Rowe]

  *) winnt_mpm: Restore Win32DisableAcceptEx On directive and Win9x platform
     by recreating the bucket allocator each time the trans pool is cleared.
     PR: 11427 #16 (follow-on)  [Tom Donovan <Tom.Donovan acm.org>]

  *) mod_dav: Fix evaluation of If-Match * and If-None-Match * conditionals.
     PR 38034 [Paritosh Shah <shah.paritosh gmail.com>]

Changes with Apache 2.2.7 (not released)

  *) SECURITY: CVE-2007-6421 (cve.mitre.org)
     mod_proxy_balancer: Correctly escape the worker route and the worker
     redirect string in the HTML output of the balancer manager.
     Reported by SecurityReason. [Ruediger Pluem]

  *) SECURITY: CVE-2007-6422 (cve.mitre.org)
     Prevent crash in balancer manager if invalid balancer name is passed
     as parameter. Reported by SecurityReason. [Ruediger Pluem]

  *) SECURITY: CVE-2007-6388 (cve.mitre.org)
     mod_status: Ensure refresh parameter is numeric to prevent
     a possible XSS attack caused by redirecting to other URLs.
     Reported by SecurityReason.  [Mark Cox, Joe Orton]

  *) SECURITY: CVE-2007-5000 (cve.mitre.org)
     mod_imagemap: Fix a cross-site scripting issue.  Reported by JPCERT.
     [Joe Orton]

  *) SECURITY: CVE-2008-0005 (cve.mitre.org)
     Introduce the ProxyFtpDirCharset directive, allowing the administrator
     to identify a default, or specific servers or paths which list their
     contents in other-than ISO-8859-1 charset (e.g. utf-8). [Ruediger Pluem]

  *) mod_dav: Adjust etag generation to produce identical results on 32-bit
     and 64-bit platforms and avoid a regression with conditional PUT's on
     lock and etag. PR 44152.
     [Michael Clark <michael metaparadigm.com>, Ruediger Pluem]

  *) mod_ssl: Fix handling of the buffered request body during a per-location
     renegotiation, when an internal redirect occurs.  PR 43738.
     [Joe Orton]

  *) mod_ldap: Try to establish a new backend LDAP connection when the
     Microsoft LDAP client library returns LDAP_UNAVAILABLE, e.g. after the
     LDAP server has closed the connection due to a timeout.
     PR 39095 [Eric Covener]

  *) log.c: Ensure Win32 resurrects its lost robust logger processes.
     [William Rowe]

  *) mod_disk_cache: Delete temporary files if they cannot be renamed to their
     final name. [Davi Arnaut <davi haxent.com.br>]

  *) Add explicit charset to the output of various modules to work around
     possible cross-site scripting flaws affecting web browsers that do not
     derive the response character set as required by  RFC2616.  One of these
     reported by SecurityReason [Joe Orton]

  *) http_protocol: Escape request method in 405 error reporting.
     This has no security impact since the browser cannot be tricked
     into sending arbitrary method strings.  [Jeff Trawick]

  *) mod_ssl: Fix SSL client certificate extensions parsing bug. PR 44073.
     [yl <yl bee-ware.net>]

  *) mod_proxy_ajp: Use 64K as maximum AJP packet size. This is the maximum
     length we can squeeze inside the AJP message packet.
     [Mladen Turk]

  *) core: Lower memory consumption of ap_r* functions by reusing the brigade
     instead of recreating it during each filter pass.
     [Stefan Fritsch <sf sfritsch.de>]

  *) core: Lower memory consumption in case that flush buckets are passed thru
     the chunk filter as last bucket of a brigade. PR 23567.
     [Stefan Fritsch <sf sfritsch.de>]

  *) core: Fix broken chunk filtering that causes all non blocking reads to be
     converted into blocking reads.  PR 19954, 41056.
     [Jean-Frederic Clere, Jim Jagielski]

  *) mod_rewrite: Add the novary flag to RewriteCond.
     [Ruediger Pluem]

  *) core: Change etag generation to produce identical results on
     32-bit and 64-bit platforms.  PR 40064.  [Joe Orton]

  *) http_protocol: Escape request method in 413 error reporting.
     Determined to be not generally exploitable, but a flaw in any case.
     PR 44014 [Victor Stinner <victor.stinner inl.fr>]

  *) mod_filter: Don't segfault on (unsupported) chained FilterProvider usage.
     PR 43956 [Nick Kew, Ruediger Pluem]

  *) core: Handle unrecognised transfer-encodings.
     PR 43882 [Nick Kew, Jeff Trawick]

  *) mod_include: Add an "if" directive syntax to test whether an URL
     is accessible, and if so, conditionally display content. This
     allows a webmaster to hide a link to a private page when the user
     has no access to that page. [Graham Leggett]

  *) Various code cleanups. PR 38699, 39518, 42005, 42006, 42007, 42008, 42009
     [Christophe Jaillet <christophe.jaillet wanadoo.fr>]

  *) mod_proxy_http: Correctly forward unexpected interim (HTTP 1xx)
     responses from the backend according to RFC2616.  But make it
     configurable in case something breaks on it.
     PR 16518 [Nick Kew]

  *) mod_substitute: Added a new output filter, which performs
     inline response content pattern matching (including regex)
     and substitution.  [Jim Jagielski, Ruediger Pluem]

  *) rotatelogs: Change command-line parsing to report more types
     of errors.  Allow local timestamps to be used when rotating based
     on file size.  [Jeff Trawick]

  *) mod_proxy: Canonicalisation improvements. Add "nocanon" keyword to
     ProxyPass, to suppress URI-canonicalisation in a reverse proxy. Also,
     don't escape/unescape forward-proxied URLs.
     PR 41798, 42592 [Nick Kew, Ruediger Pluem, Roy Fielding, Jim Jagielski]

  *) mod_status: Add SeeRequestTail directive, which determines if
     ExtendedStatus displays the 1st 63 characters of the request
     or the last 63. Useful for those requests with large string
     lengths and which only vary with the last several characters.
     [Jim Jagielski]

  *) mod_ssl: Prevent memory corruption of version string.
     PR 43865, 43334 [William Rowe, Joe Orton]

  *) core: Avoid some unexpected connection closes by telling the client
     that the connection is not persistent if the MPM process handling
     the request is already exiting when the response header is built.
     [Jeff Trawick]

  *) mod_autoindex: Generate valid XHTML output by adding the xhtml
     namespace. PR 43649 [Jose Kahan <jose w3.org>]

  *) mod_ldap: Give callers a reference to data copied into the request
     pool instead of references directly into the cache
     PR 43786 [Eric Covener]

  *) mod_ldap: Stop passing a reference to pconf around for
     (limited) use during request processing, avoiding possible 
     memory corruption and crashes.  [Eric Covener]

  *) Event MPM: Add support for running under mod_ssl, by reverting to the
     Worker MPM behaviors, when run under an input filter that buffers
     its own data. [Paul Querna]

  *) mod_charset_lite: Don't crash when the request has no associated
     filename.  [Jeff Trawick]

  *) Core: fix possible crash at startup in case of nonexistent DocumentRoot.
     PR 39722 [Adrian Buckley <adrian.buckley ntlworld.com>]

  *) HTTP protocol: Add "DefaultType none" option.
     PR 13986 and PR 16139 [Nick Kew]

  *) mod_rewrite: Add option to suppress URL unescaping
     PR 34602 [Guenther Gsenger <guenther.gsenger gmail.com>]

  *) mpm_winnt: Eliminate wait_for_many_objects.  Allows the clean 
     shutdown of the server when the MaxClients is higher then 257,
     in a more responsive manner [Mladen Turk, William Rowe]

  *) mod_proxy_http: Remove Warning headers with wrong date
     PR 16138 [Nick Kew]

  *) mod_proxy_http: Correctly parse all Connection headers in proxy.
     PR 43509 [Nick Kew]

  *) mod_proxy_http: add Via header correctly (if enabled) to
     response, even where other Via headers exist.
     PR 19439 [Nick Kew]

  *) http_core: OPTIONS * no longer maps to local storage or URI
     space. Note that unlike previous versions, OPTIONS * no
     longer returns an Allow: header. PR 43519 [Jim Jagielski]

  *) mod_proxy_http: strip hop-by-hop response headers
     PR 43455 [Nick Kew]

  *) mod_proxy: Don't by default violate RFC2616 by setting
     Max-Forwards when the client didn't send it to us.
     Leave that as a configuration option.
     PR 16137 [Nick Kew]

  *) scoreboard: improve error message on apr_shm_create failure
     PR 40037 [Nick Kew]

  *) proxy: Fix persistent backend connections.
     PR 43472 [Ruediger Pluem]

  *) mod_deflate: initialise inflate-out filter correctly when the
     first brigade contains no data buckets.
     PR 43512 [Nick Kew]

  *) mod_proxy_ajp: Ignore any ajp13 flush packets received before
     we send the response headers. See Tomcat PR 43478.
     [Jim Jagielski]

  *) mod_proxy_balancer: Do not reset lbstatus, lbfactor and lbset when
     starting a new child.
     PR 39907 [Vinicius Petrucci <vpetrucci gmail.com>, Ruediger Pluem]

  *) mod_proxy_http: Propagate Proxy-Authorization header correctly.
     PR 25947 [Nick Kew]

  *) mod_proxy_ajp: Differentiate within AJP between GET and HEAD
     requests. PR 43060 [Jim Jagielski]

  *) Don't send spurious "100 Continue" response lines.
     PR 38014 [Basant Kumar Kukreja <basant.kukreja sun.com>]

  *) mod_proxy_ftp: Don't segfault on bad line in FTP listing
     PR 40733 [Ulf Harnhammar <metaur telia.com>]

  *) mod_proxy: escape error-notes correctly
     PR 40952 [Thijs Kinkhorst <thijs debian.org>]

  *) mod_proxy: check ProxyBlock for all blocked addresses
     PR 36987 [Timo Viipuri <timo.viipuri f-secure.com>]

  *) mod_proxy: Don't lose bytes when a response line arrives in small chunks.
     PR 40894 [Andrew Rucker Jones <arjones simultan.dyndns.org>]

Changes with Apache 2.2.6

  *) SECURITY: CVE-2007-3847 (cve.mitre.org)
     mod_proxy: Prevent reading past the end of a buffer when parsing
     date-related headers.  PR 41144.
     [Davi Arnaut, Nick Kew]

  *) SECURITY: CVE-2007-1863 (cve.mitre.org)
     mod_cache: Prevent a segmentation fault if attributes are listed in a 
     Cache-Control header without any value. 
     [Niklas Edmundsson <nikke acc.umu.se>]

  *) SECURITY: CVE-2007-3304 (cve.mitre.org)
     prefork, worker, event MPMs: Ensure that the parent process cannot
     be forced to kill processes outside its process group. 
     [Joe Orton, Jim Jagielski]

  *) SECURITY: CVE-2006-5752 (cve.mitre.org)
     mod_status: Fix a possible XSS attack against a site with a public
     server-status page and ExtendedStatus enabled, for browsers which
     perform charset "detection".  Reported by Stefan Esser.  [Joe Orton]

  *) SECURITY: CVE-2007-1862 (cve.mitre.org)
     mod_mem_cache: Copy headers into longer lived storage; header names and
     values could previously point to cleaned up storage.  PR 41551.
     [Davi Arnaut <davi haxent.com.br>]

  *) mod_info: mod_info outputs invalid XHTML 1.0 transitional.
     PR 42847 [Rici Lake <rici ricilake.net>]

  *) mod_ssl: Fix spurious hostname mismatch warning for valid
     wildcard certificates.  PR 37911.  [Nick Burch <nick torchbox.com>]

  *) mod_mem_cache: Increase the minimum and default value for
     MCacheMinObjectSize from 0 to 1, as a MCacheMinObjectSize of 0 does not
     make sense and leads to a division by zero.  PR 40576.
     [Xuekun Hu <xuekun.hu gmail.com>]

  *) mod_cache: Remove expired content from cache that cannot be revalidated.
     PR 30370. [Ruediger Pluem]

  *) mod_proxy_http: accept proxy-sendchunked/proxy-sendchunks as synonymous.
     PR 43183 [Brian Rectanus <Brian.Rectanus breach.com>, Vincent Bray]

  *) mod_proxy: Ensure that at least scheme://hostname[:port] matches between
     worker and URL when searching for the best fitting worker for a given
     URL.  PR 40910 [Ruediger Pluem]

  *) mod_proxy: Improve network performance by setting APR_TCP_NODELAY
     (disable Nagle algorithm) on sockets if implemented.
     PR 42871 [Christian BOITEL <christian_boitel yahoo.fr>, Jim Jagielski]

  *) core: Do not replace a Date header set by a proxied backend server.
     PR 40232 [Ruediger Pluem]

  *) mod_proxy: Add a missing assignment in an error checking code path.
     PR 40865 [Andrew Rucker Jones <arjones simultan.dyndns.org>]

  *) mod_proxy_connect: avoid segfault on DNS lookup failure.
     PR 40756 [Trevin Beattie <tbeattie boingo.com>]

  *) mod_proxy: enable Ignore Errors option on ProxyPass Status.
     PR 43167 [Francisco Gimeno <kikov kikov.org>

  *) mod_proxy_http: Don't try to read body of a HEAD request before
     responding.  PR 41644 [Stuart Children <stuart terminus.co.uk>]

  *) mod_authnz_ldap: Don't return HTTP_UNAUTHORIZED during authorization when
     LDAP authentication is configured but we haven't seen any 
     'Require ldap-*' directives, allowing authorization to be passed to lower 
     level modules (e.g. Require valid-user) 
     PR 43281 [Eric Covener]

  *) mod_proxy: don't URLencode tilde in path component
     PR 38448 [Stijn Hoop <stijn sandcat.nl>]

  *) proxy/ajp_header.c: Fixed header token string comparisons
     Matching of header tokens failed to include the trailing NIL byte
     and could misinterpret a longer header token for a shorter.
     Additionally, a "Content-Type" comparison was made case insensitive.
     [Martin Kraemer]

  *) proxy/ajp_header.c: Backport of an AJP protocol fix for EBCDIC
     On EBCDIC machines, the status_line string was incorrectly converted
     twice. [Jean-Frederic Clere, Martin Kraemer]

  *) mod_dumpio: Fix for correct dumping of traffic on EBCDIC hosts
     Data had been incorrectly converted twice, resulting in
     garbled log output. [Martin Kraemer]

  *) mod_autoindex: Add in Type and Charset options to IndexOptions
     directive. This allows the admin to explicitly set the 
     content-type and charset of the generated page and is therefore
     a viable workaround for buggy browsers affected by CVE-2007-4465
     (cve.mitre.org). [Jim Jagielski]

  *) log core: ensure we use a special pool for stderr logging, so that
     the stderr channel remains valid from the time plog is destroyed,
     until the time the open_logs hook is called again.  [William Rowe]

  *) mod_negotiation: preserve Query String in resolving a type map
     PR 33112 [Jørgen Thomsen <apache jth.net>, Nick Kew]

  *) mod_ssl: Version reporting update; displays 'compiled against'
     Apache and build-time SSL Library versions at loglevel [info],
     while reporting the run-time SSL Library version in the server
     info tags.  Helps to identify a mod_ssl built against one flavor
     of OpenSSL but running against another (also adds SSL-C version
     number reporting.)  [William Rowe]

  *) mime.types: Many updates to sync with IANA registry and common
     unregistered types that the owners refuse to register.  Admins
     are encouraged to update their installed mime.types file.
     PR: 35550, 37798, 39317, 31483 [Roy T. Fielding]

  *) mod_expires: don't crash on bad configuration data
     PR 43213 [Julien Perez <julien.perez epsylonia.net>]

  *) mod_dbd: Introduce configuration groups to allow inheritance by virtual
     hosts of database configurations from the main server.  Determine the
     minimal set of distinct configurations and share connection pools
     whenever possible.  Allow virtual hosts to override inherited SQL
     statements.  PR 41302.  [Chris Darroch]

  *) mod_dbd: Create memory sub-pools for each DB connection and close
     DB connections in a pool cleanup function.  Ensure prepared statements
     are destroyed before DB connection is closed.  When using reslists,
     prevent segfaults when child processes exit, and stop memory leakage
     of ap_dbd_t structures.  Avoid use of global s->process->pool, which
     isn't destroyed by exiting child processes in most multi-process MPMs.
     PR 39985.  [Chris Darroch, Nick Kew]

  *) mod_dbd: Handle error conditions in dbd_construct() properly.
     Simplify ap_dbd_open() and use correct arguments to apr_dbd_error()
     when non-threaded.  Register correct cleanup data in non-threaded
     ap_dbd_acquire() and ap_dbd_cacquire().  Clean up configuration data
     and merge function.  Use ap_log_error() wherever possible.
     [Chris Darroch, Nick Kew]

  *) mod_dbd: Stash DBD connections in request_config of initial request
     only, or else sub-requests and internal redirections may cause
     entire DBD pool to be stashed in a single HTTP request.  [Chris Darroch]

  *) main core: Emit errors during the initial apr_app_initialize()
     or apr_pool_create() (when apr-based error reporting is not ready).
     [William Rowe, Jeff Trawick]

  *) log core: fix the new piped logger case where we couldn't connect 
     the replacement stderr logger's stderr to the NULL stdout stream.  
     Continue in this case, since the previous alternative of no error 
     logging at all (/dev/null) is far worse. [William Rowe]

  *) mpm_winnt: Prevent the parent-child pipe from leaking into other
     spawned processes, and ensure we have a /Device/null handle for
     stdout when running as-a-service.  [William Rowe]

  *) mod_ldap: Avoid possible crashes, hangs, and busy loops due to
     improper merging of the cache lock in vhost config
     PR 43164 [Eric Covener]

  *) ApacheMonitor: Fix Windows Vista detection. [Mladen Turk]

  *) mod_deflate: fix protocol handling in deflate input filter
     PR 23287 [Nick Kew]

  *) mime.types: add Registered Javascript/ECMAScript MIME types (RFC4329)
     PR 40299 [Dave Hodder <dmh dmh.org.uk>]

  *) mod_filter: fix integer comparisons in dispatch rules
     PR 41835 [Nick Kew]

  *) mod_filter: fix merging of ! and = in FilterChain
     PR 42186 [Issac Goldstand <margol beamartyr.net>]

  *) mod_deflate: don't try to process metadata buckets as data.  what should
     have been a 413 error was logged as a 500 and a blank screen appeared
     at the browser.
     [Greg Ames, Ruediger Pluem]

  *) mod_cgi, mod_cgid: Fix use of CGI scripts as ErrorDocuments.
     PR 39710.  [Paul Querna, Ruediger Pluem]

  *) mod_proxy: Allow to use different values for sessionid
     in url encoded id and cookies. PR 41897. [Jean-Frederic Clere]

  *) mod_proxy: Fix the 503 returned when session route does
     not match any of the balancer members. [Mladen Turk]

  *) mod_proxy: Added ProxyPassMatch directive, which is similar
     to ProxyPass but takes a regex local path prefix. [Jim Jagielski]

  *) mod_cache: Do not set Date or Expires when they are missing from
     the original response or are invalid.  [Justin Erenkrantz]

  *) mod_cache: Correctly handle HEAD requests on expired cache content.
     PR 41230.  [Niklas Edmundsson <nikke acc.umu.se>]

  *) mod_cache: Let Cache-Control max-age set the expiration of the cached
     representation if Expires is not set.  [Justin Erenkrantz]

  *) mod_cache: Allow caching of requests with query arguments when
     Cache-Control max-age is explicitly specified.  [Justin Erenkrantz]

  *) mod_disk_cache: Allow Vary'd responses to be refreshed properly.
     [Justin Erenkrantz]

  *) mod_proxy: Print the correct error message for erroneous configured
     ProxyPass directives. PR 40439.  [Takashi Sato <serai lans-tv.com>]

  *) mod_so: Provide more helpful LoadModule feedback when an error occurs.
     [William Rowe]

  *) mod_alias: Accept path components (URL part) in Redirects. PR 35314.
     [Nick Kew]

  *) mod_headers: Allow % at the end of a Header value. PR 36609.
     [Nick Kew, Ruediger Pluem]

  *) mod_cache: Use the same cache key throughout the whole request processing
     to handle escaped URLs correctly.  PR 41475.  [Ruediger Pluem]

  *) mod_cache: Add CacheIgnoreQueryString directive. PR 41484.
     [Fredrik Widlund <fredrik.widlund qbrick.com>]

  *) mod_cache: While serving a cached entity ensure that filters that have
     been applied to this cached entity before saving it to the cache are not
     applied again. PR 40090.  [Ruediger Pluem]

  *) mod_cache: Correctly cache objects whose URL query string has been
     modified by mod_rewrite. PR 40805.  [Ruediger Pluem]

  *) HTTP proxy ProxyErrorOverride: Leave 1xx and 3xx responses alone.  Only
     processing of error responses (4xx, 5xx) will be altered. PR 39245.
     [Jeff Trawick, Bart van der Schans <schans hippo.nl>]

  *) htdbm: Enable crypt support on platforms with crypt() but not
     <crypt.h>, such as z/OS.  [David Jones <oscaremma gmail.com>]

  *) mod_ssl: initialize thread locks before initializing the hardware
     acceleration library, so the latter can make use of the former.
     PR 20951.  [<adunn at ncipher.com>]

  *) ab.c: Correct behavior of HTTP request headers sent by ab
     in presence of -H command-line overrides. PR 31268, 26554.
     [Arvind Srinivasan <arvind.srinivasan  sun.com>]

  *) ab.c: The apr_port_t type is unsigned, but ab was using a
     signed format code in its reports. PR 42070.
     [Takashi Sato <serai  lans-tv.com>]

  *) mod_ldap: Remove the hardcoded size limit parameter for
     ldap_search_ext_s and replace it with an APR_ defined value that 
     is set according to the LDAP SDK being used, resolving a problem
     with SDKs that define LDAP_NO_LIMIT to something other than -1.
     [David Jones <oscaremma gmail com>]

  *) core: Correct a regression since 2.0.x in the handling of AllowOverride 
     Options. PR 41829.  [Torsten Förtsch <torsten.foertsch gmx.net>]

  *) mod_proxy_http: Handle request bodies larger than 2 GB by converting
     the Content-Length header of the request correctly. PR 40883.
     [Ruediger Pluem, toadie <toadie643 gmail.com>]

  *) mod_proxy: Fix some proxy setting inheritance problems (eg:
     ProxyTimeout). PR 11540.  [Stuart Children <stuart terminus.co.uk>]

  *) Unix MPMs: Catch SIGFPE so that exception hooks and CoreDumpDirectory
     can work after that terminating signal.
     [Eric Covener]

  *) Win32: Makefile.win will now build with MS VC 8 (Visual Studio 2005)
     including embedding the .manifest information into each binary.
     [William Rowe]

There was no Apache 2.2.5

Changes with Apache 2.2.4

  *) mod_isapi: Correctly present SERVER_PORT_SECURE.
     PR: 40573.  [Matt Eaton <asf divinehawk.com>]

  *) Allow htcacheclean, httxt2dbm, and fcgistarter to link apr/apr-util
     statically like the older support programs.
     [Eric Covener <covener gmail.com>]

  *) core: Fix NONBLOCK status of listening sockets on restart/graceful
     PR 37680.  [Darius Davis <darius-abz free-range.com.au>]

  *) mod_deflate: Rework inflate output and deflate output filter to fix
     several issues: Incorrect handling of flush buckets, potential memory
     leaks, excessive memory usage in inflate output filter for large
     compressed content. PR 39854.
     [Ruediger Pluem, Nick Kew, Justin Erenkrantz]

  *) mod_mem_cache: Memory leak fix: Unconditionally free the buffer.
     [Davi Arnaut <davi haxent.com.br>]

  *) Allow mod_dumpio to log at other than DEBUG levels via
     the new DumpIOLogLevel directive. [Jim Jagielski]

  *) rotatelogs: Improve error message for open failures.  PR 39487.
     [Joe Orton]

  *) mod_dbd: share per-request database handles across subrequests
     and internal redirects [Chris Darroch]

  *) mod_dbd: key connection pools to virtual hosts correctly even when 
     ServerName is unset/unavailable [Graham Leggett]

  *) Better detection and clean up of ldap connection that has been
     terminated by the ldap server.  PR 40878.
     [Rob Baily <rbaily servicebench com>]

  *) mod_mem_cache: Convert mod_mem_cache to use APR memory pool functions
     by creating a root pool for object persistence across requests. This
     also eliminates the need for custom serialization code.
     [Davi Arnaut <davi haxent.com.br>]

  *) mod_authnz_ldap: Add an AuthLDAPRemoteUserAttribute directive. If
     set, REMOTE_USER will be set to this attribute, rather than the
     username supplied by the user. Useful for example when you want users
     to log in using an email address, but need to supply a userid instead
     to the backend.  [Graham Leggett]

  *) mod_cgi and mod_cgid: Don't use apr_status_t error return
     from input filters as HTTP return value from the handler.
     PR 31759.  [Nick Kew]

  *) mod_cache: Eliminate a bogus error in the log when a filter returns
     AP_FILTER_ERROR.  [Niklas Edmundsson <nikke acc.umu.se>]

  *) core: Fix issue which could cause piped loggers to be orphaned and never
     terminate after a graceful restart.  PR 40651.
     [Joe Orton, Ruediger Pluem]

  *) core: Fix address-in-use startup failure caused by corruption of the list
     of listen sockets in some configurations with multiple generic Listen
     directives.  [Jeff Trawick]

  *) mod_headers: Support regexp-based editing of HTTP headers.  [Nick Kew]

  *) mod_proxy: Add explicit flushing feature. When Servlet container sends
     AJP body message with size 0, this means that Servlet container has asked
     for an explicit flush. Create flush bucket in that case. This feature has
     been added to the recent Tomcat versions without breaking the AJP
     protocol.  [Mladen Turk]

  *) mod_proxy_balancer: Set the new environment variable
     BALANCER_ROUTE_CHANGED if a worker with a route different from the one
     supplied by the client had been chosen or if the client supplied no
     routing information for a balancer with sticky sessions.
     [Ruediger Pluem]

  *) mod_proxy_balancer: Add information about the route, the sticky session
     and the worker used during a request as environment variables. PR 39806.
     [Brian <brectanu gmail.com>]

  *) mod_proxy: Don't try to use dead backend connection. PR 37770.
     [Olivier BOEL <ob dorrboel.com>] 

  *) mod_proxy_balancer: Extract stickysession routing information contained
     as parameter in the URL correctly. PR 40400.
     [Ruediger Pluem, Tomokazu Harada <harada sysrdc.ns-sol.co.jp>]

  *) mod_proxy_ajp: Added cping/cpong support for the AJP protocol.
     A new worker directive ping=timeout will cause CPING packet
     to be send expecting CPONG packet within defined timeout.  
     In case the backend is too busy this will fail instead
     sending the full header.  [Mladen Turk]

  *) mod_disk_cache: Make sure that only positive integers are accepted
     for the CacheMaxFileSize and CacheMinFileSize parameters in the
     config file. PR39380.  [Niklas Edmundsson <nikke acc.umu.se>]

  *) mod_cache: From RFC3986 (section 6.2.3.) if a URI contains an
     authority component and an empty path, the empty path is to be equivalent
     to "/". It explicitly cites the following four URIs as equivalents:
       http://example.com
       http://example.com/
       http://example.com:/
       http://example.com:80/
     [Davi Arnaut <davi haxent.com.br>]

  *) mod_cache: Don't cache requests with a expires date in the past;
     otherwise mod_cache will always try to cache the URL. This bug
     might lead to numerous rename() errors on win32 if the URL was
     previously cached. [Davi Arnaut <davi haxent.com.br>]

  *) core: Deal with the widespread use of apr_status_t return values
     as HTTP status codes, as documented in PR#31759 (a bug shared by
     the default handler, mod_cgi, mod_cgid, mod_proxy, and probably
     others). PR31759.  [Jeff Trawick, Ruediger Pluem, Joe Orton]

  *) mod_ext_filter: Handle filter names which include capital letters.
     PR 40323.  [Jeff Trawick]

  *) mod_isapi: Avoid double trailing slashes in HSE_REQ_MAP_URL_TO_PATH
     support.  Also corrects the slashes for Windows.
     PR 15993.  [William Rowe]

  *) mod_isapi: Handle "HTTP/1.1 200 OK" style status lines correctly, the
     token parser worked while the resulting length was misinterpreted.
     PR 29098.  [Brock Bland <bbland serena.com>]

  *) mod_isapi: Return 0 (failure) for more of the various ap_pass_brigade
     attempts to stream the response at the client.  Log these as well.
     PR 30022, 40470.  [William Rowe, Matt Eaton <asf divinehawk.com>]

  *) mod_isapi: Ensure we walk through all the methods the developer may have
     employed to report their HTTP status result code.  PR 16637 30033 28089
     [Matt Lewandowsky <matt iamcode.net>, William Rowe]

  *) mod_echo: Fix precedence problem in if statement. PR 40658.
     [Larry Cipriani <lvc lucent.com>]

  *) mod_mime_magic: Fix precedence problem in if statement. PR 40656.
     [Larry Cipriani <lvc lucent.com>]

  *) The full server version information is now included in the error log at
     startup as well as server status reports, irrespective of the setting
     of the ServerTokens directive.  ap_get_server_version() is now
     deprecated, and is replaced by ap_get_server_banner() and
     ap_get_server_description().  [Jeff Trawick]

  *) mod_proxy_balancer: Workers can now be defined as part of
     a balancer cluster "set" in which members of a lower-numbered set
     are preferred over higher numbered ones.  [Jim Jagielski]

  *) mod_proxy_balancer: Workers can now be defined as "hot standby" which
     will only be used if all other workers are unusable (eg: in
     error or disabled). Also, the balancer-manager displays the election
     count and I/O counts of all workers.  [Jim Jagielski]

  *) mod_proxy_ajp: Close connection to backend if reading of request body
     fails. PR 40310.  [Ian Abel <ianabel mxtelecom.com>]

  *) mod_proxy_balancer: Retry worker chosen by route / redirect worker if
     it is in error state before sending "Service Temporarily Unavailable".
     PR 38962.  [Christian Boitel <cboitel lfdj.com>]

Changes with Apache 2.2.3

  *) SECURITY: CVE-2006-3747 (cve.mitre.org)
     mod_rewrite: Fix an off-by-one security problem in the ldap scheme
     handling.  For some RewriteRules this could lead to a pointer being
     written out of bounds.  Reported by Mark Dowd of McAfee.
     [Mark Cox]

  *) Win32: Minor fixes to build more cleanly under Visual Studio 2005
     with command line builds.  [William Rowe]

  *) mod_authn_alias: Add a check to make sure that the base provider and the
     alias names are different and also that the alias has not been registered
     before. PR 40051. [Brad Nicholes]

  *) mod_authnz_ldap: Fix a problem with invalid auth error detection for LDAP
     client SDKs that don't support the LDAP_SECURITY_ERROR macro. PR 39529.
     [Ray Price <dohrayme yahoo.com>, Josh Fenlason <jfenlason ptc.com>]

  *) mod_cache: Do not overwrite the Content-Type in the cache, for
     successfully revalidated cached objects. PR 39647. [Ruediger Pluem]

  *) mod_speling: Add directive to deal with case corrections only
     and ignore other misspellings [Olivier Thereaux  <ot w3.org>]

  *) mod_dbd: Fix dependence on virtualhost configuration in
     defining prepared statements (possible segfault at startup
     in user modules such as mod_authn_dbd).  [Nick Kew]

  *) Add optional 'scheme://' prefix to ServerName directive,
     allowing correct determination of the canonical server URL
     for use behind a proxy or offload device handling SSL; fixing
     redirect generation in those cases. PR 33398. [Sander Temme]

  *) Added server_scheme field to server_rec for above. Minor MMN bump.
     [Sander Temme]

  *) mod_cache: Make caching of reverse SSL proxies possible again. PR 39593.
     [Ruediger Pluem, Joe Orton]

  *) Worker MPM: On graceless shutdown or restart, send signals to
     each worker thread to wake them up if they're polling on a
     Keep-Alive connection.  PR 38737.  [Chris Darroch]

  *) worker and event MPMs: fix excessive forking if fork() or child_init 
     take a long time.  PR 39275.
     [Greg Ames, Jeff Trawick, Chris Darroch <chrisd pearsoncmg.com> ]

  *) configure: Add "--with-included-apr" flag to force use of the
     bundled version of APR at build time.  [Joe Orton]

  *) Respect GracefulShutdownTimeout in the worker and event MPMs.
     [Chris Darroch, Garrett Rooney]

  *) mod_mem_cache: Set content type correctly when delivering data from
     cache. PR 39266. [Ruediger Pluem]

  *) mod_autoindex: Fix filename escaping with FancyIndexing disabled.
     PR 38910.  [Robby Griffin <rmg terc.edu>]

  *) mod_charset_lite: Bypass translation when the source and dest charsets
     are the same. [Jeff Trawick]

Changes with Apache 2.2.2

  *) mod_deflate: work correctly in an internal redirect
     [Brian J. France <list firehawksystems com>]

  *) mod_proxy_balancer: Initialize members of a balancer correctly.
     PR 38227. [James A. Robinson <jim.robinson stanford.edu>]

  *) mod_proxy: Do not release connections from connection pool twice.
     PR 38793. [Ruediger Pluem, matthias <mk-asf gigacodes.de>]

  *) core: Prevent reading uninitialized memory while reading a line of
     protocol input.  PR 39282. [Davi Arnaut <davi haxent com br>]

  *) mod_dbd: Update defaults, improve error reporting.
     [Chris Darroch <chrisd pearsoncmg com>, Nick Kew]

  *) mod_dbd: Create own pool and mutex to avoid problem use of
     process pool in request processing.
     [Chris Darroch <chrisd pearsoncmg com>]

  *) HTML-escape the Expect error message.  Not classed as security as
     an attacker has no way to influence the Expect header a victim will
     send to a target site.  Reported by Thiago Zaninotti
     <thiango nstalker.com>. [Mark Cox]

  *) htdbm: Fix crash processing -d option in 64-bit mode on HP-UX.
     [Jeff Trawick]

  *) htdbm: Warn the user when adding a plaintext password on a platform
     where it wouldn't work with the server (i.e., anywhere that has
     crypt()).  [Jeff Trawick]

  *) mod_proxy: don't reuse a connection that may be to the wrong backend
     PR 39253 [Ruediger Pluem]

  *) Default handler: Don't return output filter apr_status_t values.
     PR 31759.  [Jeff Trawick, Ruediger Pluem, Joe Orton]

Changes with Apache 2.2.1

  *) SECURITY: CVE-2005-3357 (cve.mitre.org)
     mod_ssl: Fix a possible crash during access control checks if a
     non-SSL request is processed for an SSL vhost (such as the
     "HTTP request received on SSL port" error message when an 400 
     ErrorDocument is configured, or if using "SSLEngine optional").
     PR 37791.  [Rüdiger Plüm, Joe Orton]

  *) SECURITY: CVE-2005-3352 (cve.mitre.org)
     mod_imagemap: Escape untrusted referer header before outputting
     in HTML to avoid potential cross-site scripting.  Change also
     made to ap_escape_html so we escape quotes.  Reported by JPCERT.
     [Mark Cox]

  *) mod_proxy_ajp: Flushing of the output after each AJP chunk is now
     configurable at runtime via the 'flushpackets' and 'flushwait' worker
     params. Minor MMN bump. [Jim Jagielski]

  *) mod_proxy: Fix incorrect usage of local and shared worker init.
     PR 38403. [Jim Jagielski]

  *) mod_isapi: Fix compiler errors on Unix platforms.
     [William Rowe]

  *) mod_proxy_http: Do send keep-alive header if the client sent
     connection: keep-alive and do not close backend connection if the client
     sent connection: close. PR 38524. [Ruediger Pluem, Joe Orton]

  *) mod_disk_cache: Return the correct error codes from bucket read 
     failures, instead of APR_EGENERAL.
     [Brian Akins <brian.akins turner.com>]

  *) Add APR/APR-Util Compiled and Runtime Version numbers to the
     output of 'httpd -V'. [William Rowe]

  *) http: If a connection is aborted while waiting for a chunked line, 
     flag the connection as errored out.  [Justin Erenkrantz]

  *) core: Reject invalid Expect header immediately. PR 38123.
     [Ruediger Pluem]

  *) Fix mis-shifted 32 bit scope, masked to 64 bits as a method.
     [Will Rowe, Joe Orton]

  *) mod_proxy: Fix KeepAlives not being allowed and set to
     backend servers. PR 38602. [Ruediger Pluem, Jim Jagielski]

  *) Fix instdso.sh "sed syntax error" installation issue on some
     platforms.  PR 38108.  [Masaoki Kobayashi <masaoki techfirm.co.jp>]

  *) mod_ssl: Fix possible crashes in shmcb with gcc 4 on platforms
     requiring word-aligned pointers.  PR 38838.  [Joe Orton]

  *) mod_proxy: If we get an error reading the upstream response,
     close the connection.  [Justin Erenkrantz, Roy T. Fielding,
     Jim Jagielski, Ruediger Pluem]

  *) mod_proxy_ajp: Support common headers of the AJP protocol in responses.
     PR 38340. [Aleksey Pesternikov <apesternikov yahoo.com>]

  *) mod_proxy_balancer: Do not overwrite the status of initialized workers
     and respect the configured status of uninitilized workers when creating
     a new child process. [Ruediger Pluem]

  *) mod_proxy_ajp: Crosscheck the length of the body chunk with the length of
     the ajp message to prevent mod_proxy_ajp from reading beyond the buffer
     boundaries and thus revealing possibly sensitive memory contents to the
     client. [Ruediger Pluem]

  *) Ensure that the proper status line is written to the client, fixing
     incorrect status lines caused by filters which modify r->status without 
     resetting r->status_line, such as the built-in byterange filter.
     [Jeff Trawick]

  *) mod_speling: Stop crashing with certain non-file requests.
     [Jeff Trawick]

  *) mod_cache: Make caching of reverse proxies possible again. PR 38017.
     [Ruediger Pluem]

  *) Modify apr[util] .h detection to avoid breakage on VPATH builds
     using Solaris make (amoung others) and avoid breakage in ./buildconf
     when srclib/apr[-util] are symlinks rather than directories proper.
     [William Rowe]

  *) Avoid Server-driven negotiation when a script has emitted an 
     explicit Status: header.  PR 38070.  [Nick Kew]

  *) Fix to avoid feeding C99 to C++ compilers.  [Joe Orton]

  *) Chunk filter: Fix chunk filter to create correct chunks in the case that
     a flush bucket is surrounded by data buckets. [Ruediger Pluem]

  *) Fix syntax error in httpd.h with strict compilers.  PR 37840.
     [Per Olausson <pao darkheim.freeserve.co.uk>]

  *) Fix recursive ErrorDocument handling.  PR 36090. 
     [Chris Darroch <chrisd pearsoncmg.com>]

  *) Don't hang on error return from post_read_request.  PR 37790.
     [Nick Kew]

  *) Fix off-by-one error in proxy_balancer.  PR 37753.
     [Kazuhiro Osawa <ko yappo ne jp>]

Changes with Apache 2.2.0

  *) mod_negotiation: Minor performance tweak by reusing already calculated
     strlen.
     [Ruediger Pluem, Christophe Jaillet <christophe.jaillet wanadoo.fr>]

  *) Remove support for 'On' and 'Off' for AuthBasicProvider and
     AuthDigestProvider.  [Joshua Slive, Justin Erenkrantz]

  *) Add in new UseCanonicalPhysicalPort directive, which controls
     whether or not Apache will ever use the actual physical port
     when constructing the canonical port number. [Jim Jagielski]

  *) mod_dav: Fix a null pointer dereference in an error code path during the
     handling of MKCOL.
     [Ruediger Pluem, Ghassan Misherghi <ghassanm ucdavis.edu>]

  *) mod_proxy_balancer: When finding best worker, use case insensitive
     match for scheme and host, but case sensitive for the rest of
     the path. [Jim Jagielski, Ruediger Pluem]

  *) Require use of APR >= 1.2.0 and APR-util >= 1.2.0 when configured 
     to use external copies of the libraries.  [Joe Orton] 

  *) Fix DESTDIR=... installation when using bundled copy of APR.
     [Torsten Foertsch <torsten.foertsch gmx.net>]

  *) mod_dav: Fix handling of unknown state tokens in If: headers.
     PR: 37288.  [Joe Orton]

  *) Strip out Experimental MPMs that have gone nowhere since 2.0
     (perchild, threadpool, leader).  [Nick Kew]

Changes with Apache 2.1.9

  *) Add mod_authn_dbd (SQL-based  authentication) [Nick Kew]

  *) mod_proxy_ajp: Do not spool the entire response from AJP backend before
     sending it up the filter chain.  PR 37100.  [Ruediger Pluem]

  *) mod_cache: Create new filters CACHE_OUT_SUBREQ / CACHE_SAVE_SUBREQ which
     only differ by the type from CACHE_OUT / CACHE_SAVE to ensure that
     subrequests to non-local resources work again.  [Ruediger Pluem]

  *) mod_proxy: Do not lowercase the entire worker name of a BalancerMember
     since this breaks case sensitive URI's.  PR 36906.  [Ruediger Pluem]

  *) core: AddOutputFilterByType is ignored for proxied requests. PR 31226.
     [Joe Orton, Ruediger Pluem]

  *) mod_proxy_http: Prevent data corruption of POST request bodies when
     client accesses proxied resources with SSL.  PR 37145.
     [Ruediger Pluem, William Rowe]

  *) mod_ssl: Fix issue which could cause spurious warnings about use
     of name-based vhosts.  PR 37051.  [Joe Orton]

  *) ab: Fix to ensure that only the expected number of requests are run.
     PR 36966.  [Joe Orton]

  *) mod_proxy_balancer: BalancerManager and proxies correctly handle
     member workers with paths.  PR 36816. [Ruediger Pluem, Jim Jagielski]

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

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

  *) Support dbd connection tied to conn_rec in mod_dbd.  [Nick Kew]

  *) Fix use of pools in mod_dbd.  [Brian J France, Nick Kew]

  *) Promote modules from "experimental": mod_dbd, mod_filter, 
     mod_charset_lite.  [Nick Kew]

  *) mod_proxy_ajp: mod_proxy_ajp sends empty SSL attributes for non SSL
     connections.  PR 36883.
     [William Barker <william.barker wilshire.com>, Ruediger Pluem]

  *) Eliminated 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_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]

  *) mod_proxy_balancer: Fix handling of sticky sessions with Tomcat.
     PR 36507.  [Ruediger Pluem]

  *) SECURITY: CVE-2005-2970 (cve.mitre.org)
     worker MPM: Fix a memory leak which can occur after an aborted
     connection in some limited circumstances.  [Greg Ames]

  *) Doxygen fixups.  [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]

Changes with Apache 2.1.8

  *) 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]

  *) 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]

  *) 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]

  *) 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>]

  *) SECURITY: CVE-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]

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

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

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

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

  *) 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

  *) SECURITY: CVE-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]

  *) 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]

  *) 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]

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>]

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>]

  *) 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
     hook. [Paul Querna]

  *) 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]

  *) 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.
     [Branko Čibej <brane xbc.nu>]

Changes with Apache 2.1.3

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

  *) 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.
     [Justin Erenkrantz]

  *) 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>]

  *) 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]

  *) 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]

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]

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
     search filter.  [Brad Nicholes]

  *) mod_usertrack: Run the fixups hook before other modules.
     PR 29755.  [Paul Querna]

  *) 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]

  *) 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]

  *) 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]

  *) 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]

  *) 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.
     [André Malo]

  *) mod_deflate: Don't deflate responses with zero length 
     e.g. proxied 304's [Allan Edwards]

  *) <IfModule> now recognizes the module identifier in addition to the
     file name. PR 29003.  [Edward Rudd <eddie omegaware.com>, André Malo]

  *) 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
     bytes.  [André Malo]

  *) 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 %.
     [André Malo]

  *) mod_headers: Allow env clauses also for 'echo' and 'unset' actions.
     [André Malo]

  *) mod_headers: Allow 'echo' also for ErrorHeaders.  [André Malo]

  *) 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).
     [André Malo]

  *) 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
     mode. PR 25635.  [André Malo]

  *) 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.
     [André Malo]

  *) 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.
     PR 25917.  [André Malo]

  *) mod_rewrite: Cookie creation now works locale independent.
     [André Malo]

  *) 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
     the Request-URI.  PR 21779.  [Amit Athavale <amit_athavale lycos.com>]

  *) 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.
     [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
     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.
     PR 14223.  [André Malo]

  *) 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]

  *) 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.
     [André Malo]

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

  *) 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>]

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

  *) prefork MPM: Use the right permissions for the directory created 
     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.
     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). 
     [Geoff Thorpe <geoff geoffthorpe.net>]

  *) change directive name from 'compressionlevel' to 'deflatecompressionlevel'
     [Ian Holsman, André Malo]

  *) mod_negotiation: quality values are now parsed independent from
     the current locale. level values are now really parsed as integers.
     PR 17564.  [André Malo]

  *) 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]

  *) 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.
     [Thom May <thom planetarytramp.net>]

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

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

  *) 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]

  *) 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]

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

  [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.x and later:

  *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.0.x/CHANGES?view=markup

Changes with Apache 1.3.x and later:

  *) http://svn.apache.org/viewvc/httpd/httpd/branches/1.3.x/src/CHANGES?view=markup

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