Changes with nginx 1.7.1                                         27 May 2014

    *) Feature: the "$upstream_cookie_..." variables.

    *) Feature: the $ssl_client_fingerprint variable.

    *) Feature: the "error_log" and "access_log" directives now support
       logging to syslog.

    *) Feature: the mail proxy now logs client port on connect.

    *) Bugfix: memory leak if the "ssl_stapling" directive was used.
       Thanks to Filipe da Silva.

    *) Bugfix: the "alias" directive used inside a location given by a
       regular expression worked incorrectly if the "if" or "limit_except"
       directives were used.

    *) Bugfix: the "charset" directive did not set a charset to encoded
       backend responses.

    *) Bugfix: a "proxy_pass" directive without URI part might use original
       request after the $args variable was set.
       Thanks to Yichun Zhang.

    *) Bugfix: in the "none" parameter in the "smtp_auth" directive; the bug
       had appeared in 1.5.6.
       Thanks to Svyatoslav Nikolsky.

    *) Bugfix: if sub_filter and SSI were used together, then responses
       might be transferred incorrectly.

    *) Bugfix: nginx could not be built with the --with-file-aio option on
       Linux/aarch64.
Changes with nginx 1.7.2                                         17 Jun 2014

    *) Feature: the "hash" directive inside the "upstream" block.

    *) Feature: defragmentation of free shared memory blocks.
       Thanks to Wandenberg Peixoto and Yichun Zhang.

    *) Bugfix: a segmentation fault might occur in a worker process if the
       default value of the "access_log" directive was used; the bug had
       appeared in 1.7.0.
       Thanks to Piotr Sikora.

    *) Bugfix: trailing slash was mistakenly removed from the last parameter
       of the "try_files" directive.

    *) Bugfix: nginx could not be built on OS X in some cases.

    *) Bugfix: in the ngx_http_spdy_module.
Changes with nginx 1.7.3                                         08 Jul 2014

    *) Feature: weak entity tags are now preserved on response
       modifications, and strong ones are changed to weak.

    *) Feature: cache revalidation now uses If-None-Match header if
       possible.

    *) Feature: the "ssl_password_file" directive.

    *) Bugfix: the If-None-Match request header line was ignored if there
       was no Last-Modified header in a response returned from cache.

    *) Bugfix: "peer closed connection in SSL handshake" messages were
       logged at "info" level instead of "error" while connecting to
       backends.

    *) Bugfix: in the ngx_http_dav_module module in nginx/Windows.

    *) Bugfix: SPDY connections might be closed prematurely if caching was
       used.
Changes with nginx 1.7.4                                         05 Aug 2014

    *) Security: pipelined commands were not discarded after STARTTLS
       command in SMTP proxy (CVE-2014-3556); the bug had appeared in 1.5.6.
       Thanks to Chris Boulton.

    *) Change: URI escaping now uses uppercase hexadecimal digits.
       Thanks to Piotr Sikora.

    *) Feature: now nginx can be build with BoringSSL and LibreSSL.
       Thanks to Piotr Sikora.

    *) Bugfix: requests might hang if resolver was used and a DNS server
       returned a malformed response; the bug had appeared in 1.5.8.

    *) Bugfix: in the ngx_http_spdy_module.
       Thanks to Piotr Sikora.

    *) Bugfix: the $uri variable might contain garbage when returning errors
       with code 400.
       Thanks to Sergey Bobrov.

    *) Bugfix: in error handling in the "proxy_store" directive and the
       ngx_http_dav_module.
       Thanks to Feng Gu.

    *) Bugfix: a segmentation fault might occur if logging of errors to
       syslog was used; the bug had appeared in 1.7.1.

    *) Bugfix: the $geoip_latitude, $geoip_longitude, $geoip_dma_code, and
       $geoip_area_code variables might not work.
       Thanks to Yichun Zhang.

    *) Bugfix: in memory allocation error handling.
       Thanks to Tatsuhiko Kubo and Piotr Sikora.
Changes with nginx 1.7.5                                         16 Sep 2014

    *) Security: it was possible to reuse SSL sessions in unrelated contexts
       if a shared SSL session cache or the same TLS session ticket key was
       used for multiple "server" blocks (CVE-2014-3616).
       Thanks to Antoine Delignat-Lavaud.

    *) Change: now the "stub_status" directive does not require a parameter.

    *) Feature: the "always" parameter of the "add_header" directive.

    *) Feature: the "proxy_next_upstream_tries",
       "proxy_next_upstream_timeout", "fastcgi_next_upstream_tries",
       "fastcgi_next_upstream_timeout", "memcached_next_upstream_tries",
       "memcached_next_upstream_timeout", "scgi_next_upstream_tries",
       "scgi_next_upstream_timeout", "uwsgi_next_upstream_tries", and
       "uwsgi_next_upstream_timeout" directives.

    *) Bugfix: in the "if" parameter of the "access_log" directive.

    *) Bugfix: in the ngx_http_perl_module.
       Thanks to Piotr Sikora.

    *) Bugfix: the "listen" directive of the mail proxy module did not allow
       to specify more than two parameters.

    *) Bugfix: the "sub_filter" directive did not work with a string to
       replace consisting of a single character.

    *) Bugfix: requests might hang if resolver was used and a timeout
       occurred during a DNS request.

    *) Bugfix: in the ngx_http_spdy_module when using with AIO.

    *) Bugfix: a segmentation fault might occur in a worker process if the
       "set" directive was used to change the "$http_...", "$sent_http_...",
       or "$upstream_http_..." variables.

    *) Bugfix: in memory allocation error handling.
       Thanks to Markus Linnala and Feng Gu.
Changes with nginx 1.7.6                                         30 Sep 2014

    *) Change: the deprecated "limit_zone" directive is not supported
       anymore.

    *) Feature: the "limit_conn_zone" and "limit_req_zone" directives now
       can be used with combinations of multiple variables.

    *) Bugfix: request body might be transmitted incorrectly when retrying a
       FastCGI request to the next upstream server.

    *) Bugfix: in logging to syslog.
Changes with nginx 1.7.7                                         28 Oct 2014

    *) Change: now nginx takes into account the "Vary" header line in a
       backend response while caching.

    *) Feature: the "proxy_force_ranges", "fastcgi_force_ranges",
       "scgi_force_ranges", and "uwsgi_force_ranges" directives.

    *) Feature: the "proxy_limit_rate", "fastcgi_limit_rate",
       "scgi_limit_rate", and "uwsgi_limit_rate" directives.

    *) Feature: the "Vary" parameter of the "proxy_ignore_headers",
       "fastcgi_ignore_headers", "scgi_ignore_headers", and
       "uwsgi_ignore_headers" directives.

    *) Bugfix: the last part of a response received from a backend with
       unbufferred proxy might not be sent to a client if "gzip" or "gunzip"
       directives were used.

    *) Bugfix: in the "proxy_cache_revalidate" directive.
       Thanks to Piotr Sikora.

    *) Bugfix: in error handling.
       Thanks to Yichun Zhang and Daniil Bondarev.

    *) Bugfix: in the "proxy_next_upstream_tries" and
       "proxy_next_upstream_timeout" directives.
       Thanks to Feng Gu.

    *) Bugfix: nginx/Windows could not be built with MinGW-w64 gcc.
       Thanks to Kouhei Sutou.
Changes with nginx 1.7.8                                         02 Dec 2014

    *) Change: now the "If-Modified-Since", "If-Range", etc. client request
       header lines are passed to a backend while caching if nginx knows in
       advance that the response will not be cached (e.g., when using
       proxy_cache_min_uses).

    *) Change: now after proxy_cache_lock_timeout nginx sends a request to a
       backend with caching disabled; the new directives
       "proxy_cache_lock_age", "fastcgi_cache_lock_age",
       "scgi_cache_lock_age", and "uwsgi_cache_lock_age" specify a time
       after which the lock will be released and another attempt to cache a
       response will be made.

    *) Change: the "log_format" directive can now be used only at http
       level.

    *) Feature: the "proxy_ssl_certificate", "proxy_ssl_certificate_key",
       "proxy_ssl_password_file", "uwsgi_ssl_certificate",
       "uwsgi_ssl_certificate_key", and "uwsgi_ssl_password_file"
       directives.
       Thanks to Piotr Sikora.

    *) Feature: it is now possible to switch to a named location using
       "X-Accel-Redirect".
       Thanks to Toshikuni Fukaya.

    *) Feature: now the "tcp_nodelay" directive works with SPDY connections.

    *) Feature: new directives in vim syntax highliting scripts.
       Thanks to Peter Wu.

    *) Bugfix: nginx ignored the "s-maxage" value in the "Cache-Control"
       backend response header line.
       Thanks to Piotr Sikora.

    *) Bugfix: in the ngx_http_spdy_module.
       Thanks to Piotr Sikora.

    *) Bugfix: in the "ssl_password_file" directive when using OpenSSL
       0.9.8zc, 1.0.0o, 1.0.1j.

    *) Bugfix: alerts "header already sent" appeared in logs if the
       "post_action" directive was used; the bug had appeared in 1.5.4.

    *) Bugfix: alerts "the http output chain is empty" might appear in logs
       if the "postpone_output 0" directive was used with SSI includes.

    *) Bugfix: in the "proxy_cache_lock" directive with SSI subrequests.
       Thanks to Yichun Zhang.
Merge pull request #11 from nginx/master

Merge