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Changes with Apache 2.1.5

  [Remove entries to the current 2.0 section below, when backported]
  *) worker and event mpms: don't take down the whole server for a transient
     thread creation failure.  PR 34514 [Greg Ames]

  *) 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_defalte as an output filter. [Paul Querna]
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  *) mod_rewrite: use buffered I/O for RewriteMap txt: files.  This
     can result in a major performance improvement when the files are
     large.
     [Greg Ames]

  *) 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 Èibej <brane xbc.nu>]

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Changes with Apache 2.1.3

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

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

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

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

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

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

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

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

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

  *) mod_proxy: Fix incorrect decoding/unescaping for reverse proxies.
     PR 32459, 15207. [Jim Jagielski]

  *) mod_cache: Add CacheStorePrivate and CacheStoreNoStore directive.
     [Justin Erenkrantz]

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

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

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

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

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

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

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

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

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

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

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William A. Rowe Jr committed
  *) 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.
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