Changes with nginx 1.5.10                                        04 Feb 2014

*) Feature: the ngx_http_spdy_module now uses SPDY 3.1 protocol.
Thanks to Automattic and MaxCDN for sponsoring this work.

*) Feature: the ngx_http_mp4_module now skips tracks too short for a
seek requested.

*) Bugfix: a segmentation fault might occur in a worker process if the
$ssl_session_id variable was used in logs; the bug had appeared in
1.5.9.

*) Bugfix: the $date_local and $date_gmt variables used wrong format
outside of the ngx_http_ssi_filter_module.

*) Bugfix: client connections might be immediately closed if deferred
accept was used; the bug had appeared in 1.3.15.

*) Bugfix: alerts "getsockopt(TCP_FASTOPEN) ... failed" appeared in logs
during binary upgrade on Linux; the bug had appeared in 1.5.8.
Thanks to Piotr Sikora.
Changes with nginx 1.5.11                                        04 Mar 2014

    *) Security: memory corruption might occur in a worker process on 32-bit
       platforms while handling a specially crafted request by
       ngx_http_spdy_module, potentially resulting in arbitrary code
       execution (CVE-2014-0088); the bug had appeared in 1.5.10.
       Thanks to Lucas Molas, researcher at Programa STIC, Fundación Dr.
       Manuel Sadosky, Buenos Aires, Argentina.

    *) Feature: the $ssl_session_reused variable.

    *) Bugfix: the "client_max_body_size" directive might not work when
       reading a request body using chunked transfer encoding; the bug had
       appeared in 1.3.9.
       Thanks to Lucas Molas.

    *) Bugfix: a segmentation fault might occur in a worker process when
       proxying WebSocket connections.

    *) Bugfix: a segmentation fault might occur in a worker process if the
       ngx_http_spdy_module was used on 32-bit platforms; the bug had
       appeared in 1.5.10.

    *) Bugfix: the $upstream_status variable might contain wrong data if the
       "proxy_cache_use_stale" or "proxy_cache_revalidate" directives were
       used.
       Thanks to Piotr Sikora.

    *) Bugfix: a segmentation fault might occur in a worker process if
       errors with code 400 were redirected to a named location using the
       "error_page" directive.

    *) Bugfix: nginx/Windows could not be built with Visual Studio 2013.
Changes with nginx 1.5.12                                        18 Mar 2014

    *) Security: a heap memory buffer overflow might occur in a worker
       process while handling a specially crafted request by
       ngx_http_spdy_module, potentially resulting in arbitrary code
       execution (CVE-2014-0133).
       Thanks to Lucas Molas, researcher at Programa STIC, Fundación Dr.
       Manuel Sadosky, Buenos Aires, Argentina.

    *) Feature: the "proxy_protocol" parameters of the "listen" and
       "real_ip_header" directives, the $proxy_protocol_addr variable.

    *) Bugfix: in the "fastcgi_next_upstream" directive.
       Thanks to Lucas Molas.
Changes with nginx 1.5.13                                        08 Apr 2014

    *) Change: improved hash table handling; the default values of the
       "variables_hash_max_size" and "types_hash_bucket_size" were changed
       to 1024 and 64 respectively.

    *) Feature: the ngx_http_mp4_module now supports the "end" argument.

    *) Feature: byte ranges support in the ngx_http_mp4_module and while
       saving responses to cache.

    *) Bugfix: alerts "ngx_slab_alloc() failed: no memory" no longer logged
       when using shared memory in the "ssl_session_cache" directive and in
       the ngx_http_limit_req_module.

    *) Bugfix: the "underscores_in_headers" directive did not allow
       underscore as a first character of a header.
       Thanks to Piotr Sikora.

    *) Bugfix: cache manager might hog CPU on exit in nginx/Windows.

    *) Bugfix: nginx/Windows terminated abnormally if the
       "ssl_session_cache" directive was used with the "shared" parameter.

    *) Bugfix: in the ngx_http_spdy_module.
Changes with nginx 1.6.0                                         24 Apr 2014

    *) 1.6.x stable branch.
Changes with nginx 1.7.0                                         24 Apr 2014
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.
Merge remote-tracking branch 'upstream/master'