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  [Remove entries to the current 2.0 and 2.2 section below, when backported]
  *) Authz: Add the new module mod_authn_core that will provide common
     authn directives such as 'AuthType', 'AuthName'.  Move the directives
     'AuthType' and 'AuthName' out of the core module and merge mod_authz_alias 
     into mod_authn_core. [Brad Nicholes]
      
  *) Authz: Mark the directives 'Order', 'Allow', 'Deny' and 'Satisfy' as 
     deprecated and move them into the new module mod_access_compat which
     can be loaded to provide backwards compatibility for these directives.
     [Brad Nicholes]
     
  *) Authz: Move the 'Require' directive from the core module as well as 
     add the directives '<SatisfyAll>', '<SatisfyOne>', '<RequireAlias>' 
     and 'Reject' to mod_authz_core. The new directives introduce 'AND/OR' 
     logic into the authorization processing. [Brad Nicholes]
     
  *) Authz: Add the new module mod_authz_core which acts as the 
     authorization provider vector and contains common authz 
     directives. [Brad Nicholes]

  *) Authz: Renamed mod_authz_dbm authz providers from 'group' and 
     'file-group' to 'dbm-group' and 'dbm-file-group'. [Brad Nicholes]

  *) Authz: Added the new authz providers 'env', 'ip', 'host', 'all' to handle
     host-based access control provided by mod_authz_host and invoked 
     through the 'Require' directive. [Brad Nicholes]

  *) Authz: Convert all of the authz modules from hook based to 
     provider based. [Brad Nicholes]
  
  *) mod_cache: Add CacheMinExpire directive to set the minimum time in
     seconds to cache a document.
     [Brian Akins <brian.akins turner.com>, Ruediger Pluem]

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

  *) Refactored ap_read_request() to provide a foundation for
     nonblocking reads of requests.  [Brian Pane]

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

  *) mod_proxy: If we get an error reading the upstream response,
     close the connection.
     [Justin Erenkrantz, Roy T. Fielding, Jim Jagielski, Ruediger Pluem]
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  *) mod_authz_dbd: SQL authz with Login/Session support [Nick Kew]

  *) Fix typo in ProxyStatus syntax error message.
     [Christophe Jaillet <christophe.jaillet wanadoo.fr>]

  *) Asynchronous write completion for the Event MPM.  [Brian Pane]

  *) Added an End-Of-Request bucket type.  The logging of a request and
     the freeing of its pool are now done when the EOR bucket is destroyed.
     This has the effect of delaying the logging until right after the last
     of the response is sent; ap_core_output_filter() calls the access logger
     indirectly when it destroys the EOR bucket.  [Brian Pane]

  *) Rewrite of logresolve support utility: IPv6 addresses are now supported
     and the format of statistical output has changed. [Colm MacCarthaigh]

  *) Rewrite of ap_coreoutput_filter to do nonblocking writes  [Brian Pane]

  *) Added new connection states for handler and write completion
     [Brian Pane]

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  *) New module: mod_authn_dbd [Nick Kew]

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

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

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]

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

  *) 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]

  *) Fix syntax error in httpd.h with strict compilers.  PR 38740.
     [Per Olausson <pao darkheim.freeserve.co.uk>]

  *) Preserve the Content-Length header for a proxied HEAD response.
     PR 18757.  [Greg Ames]

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

  *) Don't hang on error return from post_read_request.  PR37790 [Nick Kew]

  *) Fix off-by-one error in proxy_balancer.  PR37753
     [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>]

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

  *) 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]

  *) mod_proxy_ajp: Do not spool the entire response from AJP backend before
     sending it up the filter chain. PR37100.  [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. PR36906.  [Ruediger Pluem]

  *) core: AddOutputFilterByType is ignored for proxied requests. PR31226.
     [Joe Orton, Ruediger Pluem]

  *) mod_proxy_http: Prevent data corruption of POST request bodies when
     client accesses proxied resources with SSL. PR37145.
     [Ruediger Pluem, William Rowe]

  *) mod_proxy_balancer: BalancerManager and proxies correctly handle
     member workers with paths. PR36816. [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]

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  *) Support dbd connections tied to the conn_rec [Nick Kew]

  *) Move mod_dbd to /modules/database/ [Nick Kew]

  *) Move mod_filter and mod_charset_lite to /modules/filters/ [Nick Kew]

  *) Fix mod_dbd's config [Brian J. France <list firehawksystems.com>]

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

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

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

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

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

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

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