nginx-site: text/en/CHANGES-1.22 comparison

comparison text/en/CHANGES-1.22 @ 2852:a9ebed59b64f

nginx-1.22.0

author	Maxim Dounin <mdounin@mdounin.ru>
date	Tue, 24 May 2022 16:24:47 +0300
parents	text/en/CHANGES@1ecf0e0526da
children	0b7e004b5061

comparison

equal deleted inserted replaced

-:04b2f591b5af
+:a9ebed59b64f
+Changes with nginx 1.22.0                                        24 May 2022
+*) 1.22.x stable branch.
+Changes with nginx 1.21.6                                        25 Jan 2022
+*) Bugfix: when using EPOLLEXCLUSIVE on Linux client connections were
+unevenly distributed among worker processes.
+*) Bugfix: nginx returned the "Connection: keep-alive" header line in
+responses during graceful shutdown of old worker processes.
+*) Bugfix: in the "ssl_session_ticket_key" when using TLSv1.3.
+Changes with nginx 1.21.5                                        28 Dec 2021
+*) Change: now nginx is built with the PCRE2 library by default.
+*) Change: now nginx always uses sendfile(SF_NODISKIO) on FreeBSD.
+*) Feature: support for sendfile(SF_NOCACHE) on FreeBSD.
+*) Feature: the $ssl_curve variable.
+*) Bugfix: connections might hang when using HTTP/2 without SSL with the
+"sendfile" and "aio" directives.
+Changes with nginx 1.21.4                                        02 Nov 2021
+*) Change: support for NPN instead of ALPN to establish HTTP/2
+connections has been removed.
+*) Change: now nginx rejects SSL connections if ALPN is used by the
+client, but no supported protocols can be negotiated.
+*) Change: the default value of the "sendfile_max_chunk" directive was
+changed to 2 megabytes.
+*) Feature: the "proxy_half_close" directive in the stream module.
+*) Feature: the "ssl_alpn" directive in the stream module.
+*) Feature: the $ssl_alpn_protocol variable.
+*) Feature: support for SSL_sendfile() when using OpenSSL 3.0.
+*) Feature: the "mp4_start_key_frame" directive in the
+ngx_http_mp4_module.
+Thanks to Tracey Jaquith.
+*) Bugfix: in the $content_length variable when using chunked transfer
+encoding.
+*) Bugfix: after receiving a response with incorrect length from a
+proxied backend nginx might nevertheless cache the connection.
+Thanks to Awdhesh Mathpal.
+*) Bugfix: invalid headers from backends were logged at the "info" level
+instead of "error"; the bug had appeared in 1.21.1.
+*) Bugfix: requests might hang when using HTTP/2 and the "aio_write"
+directive.
+Changes with nginx 1.21.3                                        07 Sep 2021
+*) Change: optimization of client request body reading when using
+HTTP/2.
+*) Bugfix: in request body filters internal API when using HTTP/2 and
+buffering of the data being processed.
+Changes with nginx 1.21.2                                        31 Aug 2021
+*) Change: now nginx rejects HTTP/1.0 requests with the
+"Transfer-Encoding" header line.
+*) Change: export ciphers are no longer supported.
+*) Feature: OpenSSL 3.0 compatibility.
+*) Feature: the "Auth-SSL-Protocol" and "Auth-SSL-Cipher" header lines
+are now passed to the mail proxy authentication server.
+Thanks to Rob Mueller.
+*) Feature: request body filters API now permits buffering of the data
+being processed.
+*) Bugfix: backend SSL connections in the stream module might hang after
+an SSL handshake.
+*) Bugfix: the security level, which is available in OpenSSL 1.1.0 or
+newer, did not affect loading of the server certificates when set
+with "@SECLEVEL=N" in the "ssl_ciphers" directive.
+*) Bugfix: SSL connections with gRPC backends might hang if select,
+poll, or /dev/poll methods were used.
+*) Bugfix: when using HTTP/2 client request body was always written to
+disk if the "Content-Length" header line was not present in the
+request.
+Changes with nginx 1.21.1                                        06 Jul 2021
+*) Change: now nginx always returns an error for the CONNECT method.
+*) Change: now nginx always returns an error if both "Content-Length"
+and "Transfer-Encoding" header lines are present in the request.
+*) Change: now nginx always returns an error if spaces or control
+characters are used in the request line.
+*) Change: now nginx always returns an error if spaces or control
+characters are used in a header name.
+*) Change: now nginx always returns an error if spaces or control
+characters are used in the "Host" request header line.
+*) Change: optimization of configuration testing when using many
+listening sockets.
+*) Bugfix: nginx did not escape """, "<", ">", "\", "^", "`", "{", "|",
+and "}" characters when proxying with changed URI.
+*) Bugfix: SSL variables might be empty when used in logs; the bug had
+appeared in 1.19.5.
+*) Bugfix: keepalive connections with gRPC backends might not be closed
+after receiving a GOAWAY frame.
+*) Bugfix: reduced memory consumption for long-lived requests when
+proxying with more than 64 buffers.
+Changes with nginx 1.21.0                                        25 May 2021
+*) Security: 1-byte memory overwrite might occur during DNS server
+response processing if the "resolver" directive was used, allowing an
+attacker who is able to forge UDP packets from the DNS server to
+cause worker process crash or, potentially, arbitrary code execution
+(CVE-2021-23017).
+*) Feature: variables support in the "proxy_ssl_certificate",
+"proxy_ssl_certificate_key" "grpc_ssl_certificate",
+"grpc_ssl_certificate_key", "uwsgi_ssl_certificate", and
+"uwsgi_ssl_certificate_key" directives.
+*) Feature: the "max_errors" directive in the mail proxy module.
+*) Feature: the mail proxy module supports POP3 and IMAP pipelining.
+*) Feature: the "fastopen" parameter of the "listen" directive in the
+stream module.
+Thanks to Anbang Wen.
+*) Bugfix: special characters were not escaped during automatic redirect
+with appended trailing slash.
+*) Bugfix: connections with clients in the mail proxy module might be
+closed unexpectedly when using SMTP pipelining.
+Changes with nginx 1.19.10                                       13 Apr 2021
+*) Change: the default value of the "keepalive_requests" directive was
+changed to 1000.
+*) Feature: the "keepalive_time" directive.
+*) Feature: the $connection_time variable.
+*) Workaround: "gzip filter failed to use preallocated memory" alerts
+appeared in logs when using zlib-ng.
+Changes with nginx 1.19.9                                        30 Mar 2021
+*) Bugfix: nginx could not be built with the mail proxy module, but
+without the ngx_mail_ssl_module; the bug had appeared in 1.19.8.
+*) Bugfix: "upstream sent response body larger than indicated content
+length" errors might occur when working with gRPC backends; the bug
+had appeared in 1.19.1.
+*) Bugfix: nginx might not close a connection till keepalive timeout
+expiration if the connection was closed by the client while
+discarding the request body.
+*) Bugfix: nginx might not detect that a connection was already closed
+by the client when waiting for auth_delay or limit_req delay, or when
+working with backends.
+*) Bugfix: in the eventport method.
+Changes with nginx 1.19.8                                        09 Mar 2021
+*) Feature: flags in the "proxy_cookie_flags" directive can now contain
+variables.
+*) Feature: the "proxy_protocol" parameter of the "listen" directive,
+the "proxy_protocol" and "set_real_ip_from" directives in mail proxy.
+*) Bugfix: HTTP/2 connections were immediately closed when using
+"keepalive_timeout 0"; the bug had appeared in 1.19.7.
+*) Bugfix: some errors were logged as unknown if nginx was built with
+glibc 2.32.
+*) Bugfix: in the eventport method.
+Changes with nginx 1.19.7                                        16 Feb 2021
+*) Change: connections handling in HTTP/2 has been changed to better
+match HTTP/1.x; the "http2_recv_timeout", "http2_idle_timeout", and
+"http2_max_requests" directives have been removed, the
+"keepalive_timeout" and "keepalive_requests" directives should be
+used instead.
+*) Change: the "http2_max_field_size" and "http2_max_header_size"
+directives have been removed, the "large_client_header_buffers"
+directive should be used instead.
+*) Feature: now, if free worker connections are exhausted, nginx starts
+closing not only keepalive connections, but also connections in
+lingering close.
+*) Bugfix: "zero size buf in output" alerts might appear in logs if an
+upstream server returned an incorrect response during unbuffered
+proxying; the bug had appeared in 1.19.1.
+*) Bugfix: HEAD requests were handled incorrectly if the "return"
+directive was used with the "image_filter" or "xslt_stylesheet"
+directives.
+*) Bugfix: in the "add_trailer" directive.
+Changes with nginx 1.19.6                                        15 Dec 2020
+*) Bugfix: "no live upstreams" errors if a "server" inside "upstream"
+block was marked as "down".
+*) Bugfix: a segmentation fault might occur in a worker process if HTTPS
+was used; the bug had appeared in 1.19.5.
+*) Bugfix: nginx returned the 400 response on requests like
+"GET http://example.com?args HTTP/1.0".
+*) Bugfix: in the ngx_http_flv_module and ngx_http_mp4_module.
+Thanks to Chris Newton.
+Changes with nginx 1.19.5                                        24 Nov 2020
+*) Feature: the -e switch.
+*) Feature: the same source files can now be specified in different
+modules while building addon modules.
+*) Bugfix: SSL shutdown did not work when lingering close was used.
+*) Bugfix: "upstream sent frame for closed stream" errors might occur
+when working with gRPC backends.
+*) Bugfix: in request body filters internal API.
+Changes with nginx 1.19.4                                        27 Oct 2020
+*) Feature: the "ssl_conf_command", "proxy_ssl_conf_command",
+"grpc_ssl_conf_command", and "uwsgi_ssl_conf_command" directives.
+*) Feature: the "ssl_reject_handshake" directive.
+*) Feature: the "proxy_smtp_auth" directive in mail proxy.
+Changes with nginx 1.19.3                                        29 Sep 2020
+*) Feature: the ngx_stream_set_module.
+*) Feature: the "proxy_cookie_flags" directive.
+*) Feature: the "userid_flags" directive.
+*) Bugfix: the "stale-if-error" cache control extension was erroneously
+applied if backend returned a response with status code 500, 502,
+503, 504, 403, 404, or 429.
+*) Bugfix: "[crit] cache file ... has too long header" messages might
+appear in logs if caching was used and the backend returned responses
+with the "Vary" header line.
+*) Workaround: "[crit] SSL_write() failed" messages might appear in logs
+when using OpenSSL 1.1.1.
+*) Bugfix: "SSL_shutdown() failed (SSL: ... bad write retry)" messages
+might appear in logs; the bug had appeared in 1.19.2.
+*) Bugfix: a segmentation fault might occur in a worker process when
+using HTTP/2 if errors with code 400 were redirected to a proxied
+location using the "error_page" directive.
+*) Bugfix: socket leak when using HTTP/2 and subrequests in the njs
+module.
+Changes with nginx 1.19.2                                        11 Aug 2020
+*) Change: now nginx starts closing keepalive connections before all
+free worker connections are exhausted, and logs a warning about this
+to the error log.
+*) Change: optimization of client request body reading when using
+chunked transfer encoding.
+*) Bugfix: memory leak if the "ssl_ocsp" directive was used.
+*) Bugfix: "zero size buf in output" alerts might appear in logs if a
+FastCGI server returned an incorrect response; the bug had appeared
+in 1.19.1.
+*) Bugfix: a segmentation fault might occur in a worker process if
+different large_client_header_buffers sizes were used in different
+virtual servers.
+*) Bugfix: SSL shutdown might not work.
+*) Bugfix: "SSL_shutdown() failed (SSL: ... bad write retry)" messages
+might appear in logs.
+*) Bugfix: in the ngx_http_slice_module.
+*) Bugfix: in the ngx_http_xslt_filter_module.
+Changes with nginx 1.19.1                                        07 Jul 2020
+*) Change: the "lingering_close", "lingering_time", and
+"lingering_timeout" directives now work when using HTTP/2.
+*) Change: now extra data sent by a backend are always discarded.
+*) Change: now after receiving a too short response from a FastCGI
+server nginx tries to send the available part of the response to the
+client, and then closes the client connection.
+*) Change: now after receiving a response with incorrect length from a
+gRPC backend nginx stops response processing with an error.
+*) Feature: the "min_free" parameter of the "proxy_cache_path",
+"fastcgi_cache_path", "scgi_cache_path", and "uwsgi_cache_path"
+directives.
+Thanks to Adam Bambuch.
+*) Bugfix: nginx did not delete unix domain listen sockets during
+graceful shutdown on the SIGQUIT signal.
+*) Bugfix: zero length UDP datagrams were not proxied.
+*) Bugfix: proxying to uwsgi backends using SSL might not work.
+Thanks to Guanzhong Chen.
+*) Bugfix: in error handling when using the "ssl_ocsp" directive.
+*) Bugfix: on XFS and NFS file systems disk cache size might be
+calculated incorrectly.
+*) Bugfix: "negative size buf in writer" alerts might appear in logs if
+a memcached server returned a malformed response.
+Changes with nginx 1.19.0                                        26 May 2020
+*) Feature: client certificate validation with OCSP.
+*) Bugfix: "upstream sent frame for closed stream" errors might occur
+when working with gRPC backends.
+*) Bugfix: OCSP stapling might not work if the "resolver" directive was
+not specified.
+*) Bugfix: connections with incorrect HTTP/2 preface were not logged.
+Changes with nginx 1.17.10                                       14 Apr 2020
+*) Feature: the "auth_delay" directive.
+Changes with nginx 1.17.9                                        03 Mar 2020
+*) Change: now nginx does not allow several "Host" request header lines.
+*) Bugfix: nginx ignored additional "Transfer-Encoding" request header
+lines.
+*) Bugfix: socket leak when using HTTP/2.
+*) Bugfix: a segmentation fault might occur in a worker process if OCSP
+stapling was used.
+*) Bugfix: in the ngx_http_mp4_module.
+*) Bugfix: nginx used status code 494 instead of 400 if errors with code
+494 were redirected with the "error_page" directive.
+*) Bugfix: socket leak when using subrequests in the njs module and the
+"aio" directive.
+Changes with nginx 1.17.8                                        21 Jan 2020
+*) Feature: variables support in the "grpc_pass" directive.
+*) Bugfix: a timeout might occur while handling pipelined requests in an
+SSL connection; the bug had appeared in 1.17.5.
+*) Bugfix: in the "debug_points" directive when using HTTP/2.
+Thanks to Daniil Bondarev.
+Changes with nginx 1.17.7                                        24 Dec 2019
+*) Bugfix: a segmentation fault might occur on start or during
+reconfiguration if the "rewrite" directive with an empty replacement
+string was used in the configuration.
+*) Bugfix: a segmentation fault might occur in a worker process if the
+"break" directive was used with the "alias" directive or with the
+"proxy_pass" directive with a URI.
+*) Bugfix: the "Location" response header line might contain garbage if
+the request URI was rewritten to the one containing a null character.
+*) Bugfix: requests with bodies were handled incorrectly when returning
+redirections with the "error_page" directive; the bug had appeared in
+0.7.12.
+*) Bugfix: socket leak when using HTTP/2.
+*) Bugfix: a timeout might occur while handling pipelined requests in an
+SSL connection; the bug had appeared in 1.17.5.
+*) Bugfix: in the ngx_http_dav_module.
+Changes with nginx 1.17.6                                        19 Nov 2019
+*) Feature: the $proxy_protocol_server_addr and
+$proxy_protocol_server_port variables.
+*) Feature: the "limit_conn_dry_run" directive.
+*) Feature: the $limit_req_status and $limit_conn_status variables.
+Changes with nginx 1.17.5                                        22 Oct 2019
+*) Feature: now nginx uses ioctl(FIONREAD), if available, to avoid
+reading from a fast connection for a long time.
+*) Bugfix: incomplete escaped characters at the end of the request URI
+were ignored.
+*) Bugfix: "/." and "/.." at the end of the request URI were not
+normalized.
+*) Bugfix: in the "merge_slashes" directive.
+*) Bugfix: in the "ignore_invalid_headers" directive.
+Thanks to Alan Kemp.
+*) Bugfix: nginx could not be built with MinGW-w64 gcc 8.1 or newer.
+Changes with nginx 1.17.4                                        24 Sep 2019
+*) Change: better detection of incorrect client behavior in HTTP/2.
+*) Change: in handling of not fully read client request body when
+returning errors in HTTP/2.
+*) Bugfix: the "worker_shutdown_timeout" directive might not work when
+using HTTP/2.
+*) Bugfix: a segmentation fault might occur in a worker process when
+using HTTP/2 and the "proxy_request_buffering" directive.
+*) Bugfix: the ECONNABORTED error log level was "crit" instead of
+"error" on Windows when using SSL.
+*) Bugfix: nginx ignored extra data when using chunked transfer
+encoding.
+*) Bugfix: nginx always returned the 500 error if the "return" directive
+was used and an error occurred during reading client request body.
+*) Bugfix: in memory allocation error handling.
+Changes with nginx 1.17.3                                        13 Aug 2019
+*) Security: when using HTTP/2 a client might cause excessive memory
+consumption and CPU usage (CVE-2019-9511, CVE-2019-9513,
+CVE-2019-9516).
+*) Bugfix: "zero size buf" alerts might appear in logs when using
+gzipping; the bug had appeared in 1.17.2.
+*) Bugfix: a segmentation fault might occur in a worker process if the
+"resolver" directive was used in SMTP proxy.
+Changes with nginx 1.17.2                                        23 Jul 2019
+*) Change: minimum supported zlib version is 1.2.0.4.
+Thanks to Ilya Leoshkevich.
+*) Change: the $r->internal_redirect() embedded perl method now expects
+escaped URIs.
+*) Feature: it is now possible to switch to a named location using the
+$r->internal_redirect() embedded perl method.
+*) Bugfix: in error handling in embedded perl.
+*) Bugfix: a segmentation fault might occur on start or during
+reconfiguration if hash bucket size larger than 64 kilobytes was used
+in the configuration.
+*) Bugfix: nginx might hog CPU during unbuffered proxying and when
+proxying WebSocket connections if the select, poll, or /dev/poll
+methods were used.
+*) Bugfix: in the ngx_http_xslt_filter_module.
+*) Bugfix: in the ngx_http_ssi_filter_module.
+Changes with nginx 1.17.1                                        25 Jun 2019
+*) Feature: the "limit_req_dry_run" directive.
+*) Feature: when using the "hash" directive inside the "upstream" block
+an empty hash key now triggers round-robin balancing.
+Thanks to Niklas Keller.
+*) Bugfix: a segmentation fault might occur in a worker process if
+caching was used along with the "image_filter" directive, and errors
+with code 415 were redirected with the "error_page" directive; the
+bug had appeared in 1.11.10.
+*) Bugfix: a segmentation fault might occur in a worker process if
+embedded perl was used; the bug had appeared in 1.7.3.
+Changes with nginx 1.17.0                                        21 May 2019
+*) Feature: variables support in the "limit_rate" and "limit_rate_after"
+directives.
+*) Feature: variables support in the "proxy_upload_rate" and
+"proxy_download_rate" directives in the stream module.
+*) Change: minimum supported OpenSSL version is 0.9.8.
+*) Change: now the postpone filter is always built.
+*) Bugfix: the "include" directive did not work inside the "if" and
+"limit_except" blocks.
+*) Bugfix: in byte ranges processing.
+Changes with nginx 1.15.12                                       16 Apr 2019
+*) Bugfix: a segmentation fault might occur in a worker process if
+variables were used in the "ssl_certificate" or "ssl_certificate_key"
+directives and OCSP stapling was enabled.
+Changes with nginx 1.15.11                                       09 Apr 2019
+*) Bugfix: in the "ssl_stapling_file" directive on Windows.
+Changes with nginx 1.15.10                                       26 Mar 2019
+*) Change: when using a hostname in the "listen" directive nginx now
+creates listening sockets for all addresses the hostname resolves to
+(previously, only the first address was used).
+*) Feature: port ranges in the "listen" directive.
+*) Feature: loading of SSL certificates and secret keys from variables.
+*) Workaround: the $ssl_server_name variable might be empty when using
+OpenSSL 1.1.1.
+*) Bugfix: nginx/Windows could not be built with Visual Studio 2015 or
+newer; the bug had appeared in 1.15.9.
+Changes with nginx 1.15.9                                        26 Feb 2019
+*) Feature: variables support in the "ssl_certificate" and
+"ssl_certificate_key" directives.
+*) Feature: the "poll" method is now available on Windows when using
+Windows Vista or newer.
+*) Bugfix: if the "select" method was used on Windows and an error
+occurred while establishing a backend connection, nginx waited for
+the connection establishment timeout to expire.
+*) Bugfix: the "proxy_upload_rate" and "proxy_download_rate" directives
+in the stream module worked incorrectly when proxying UDP datagrams.
+Changes with nginx 1.15.8                                        25 Dec 2018
+*) Feature: the $upstream_bytes_sent variable.
+Thanks to Piotr Sikora.
+*) Feature: new directives in vim syntax highlighting scripts.
+Thanks to Gena Makhomed.
+*) Bugfix: in the "proxy_cache_background_update" directive.
+*) Bugfix: in the "geo" directive when using unix domain listen sockets.
+*) Workaround: the "ignoring stale global SSL error ... bad length"
+alerts might appear in logs when using the "ssl_early_data" directive
+with OpenSSL.
+*) Bugfix: in nginx/Windows.
+*) Bugfix: in the ngx_http_autoindex_module on 32-bit platforms.
+Changes with nginx 1.15.7                                        27 Nov 2018
+*) Feature: the "proxy_requests" directive in the stream module.
+*) Feature: the "delay" parameter of the "limit_req" directive.
+Thanks to Vladislav Shabanov and Peter Shchuchkin.
+*) Bugfix: memory leak on errors during reconfiguration.
+*) Bugfix: in the $upstream_response_time, $upstream_connect_time, and
+$upstream_header_time variables.
+*) Bugfix: a segmentation fault might occur in a worker process if the
+ngx_http_mp4_module was used on 32-bit platforms.
+Changes with nginx 1.15.6                                        06 Nov 2018
+*) Security: when using HTTP/2 a client might cause excessive memory
+consumption (CVE-2018-16843) and CPU usage (CVE-2018-16844).
+*) Security: processing of a specially crafted mp4 file with the
+ngx_http_mp4_module might result in worker process memory disclosure
+(CVE-2018-16845).
+*) Feature: the "proxy_socket_keepalive", "fastcgi_socket_keepalive",
+"grpc_socket_keepalive", "memcached_socket_keepalive",
+"scgi_socket_keepalive", and "uwsgi_socket_keepalive" directives.
+*) Bugfix: if nginx was built with OpenSSL 1.1.0 and used with OpenSSL
+1.1.1, the TLS 1.3 protocol was always enabled.
+*) Bugfix: working with gRPC backends might result in excessive memory
+consumption.
+Changes with nginx 1.15.5                                        02 Oct 2018
+*) Bugfix: a segmentation fault might occur in a worker process when
+using OpenSSL 1.1.0h or newer; the bug had appeared in 1.15.4.
+*) Bugfix: of minor potential bugs.
+Changes with nginx 1.15.4                                        25 Sep 2018
+*) Feature: now the "ssl_early_data" directive can be used with OpenSSL.
+*) Bugfix: in the ngx_http_uwsgi_module.
+Thanks to Chris Caputo.
+*) Bugfix: connections with some gRPC backends might not be cached when
+using the "keepalive" directive.
+*) Bugfix: a socket leak might occur when using the "error_page"
+directive to redirect early request processing errors, notably errors
+with code 400.
+*) Bugfix: the "return" directive did not change the response code when
+returning errors if the request was redirected by the "error_page"
+directive.
+*) Bugfix: standard error pages and responses of the
+ngx_http_autoindex_module module used the "bgcolor" attribute, and
+might be displayed incorrectly when using custom color settings in
+browsers.
+Thanks to Nova DasSarma.
+*) Change: the logging level of the "no suitable key share" and "no
+suitable signature algorithm" SSL errors has been lowered from "crit"
+to "info".
+Changes with nginx 1.15.3                                        28 Aug 2018
+*) Feature: now TLSv1.3 can be used with BoringSSL.
+*) Feature: the "ssl_early_data" directive, currently available with
+BoringSSL.
+*) Feature: the "keepalive_timeout" and "keepalive_requests" directives
+in the "upstream" block.
+*) Bugfix: the ngx_http_dav_module did not truncate destination file
+when copying a file over an existing one with the COPY method.
+*) Bugfix: the ngx_http_dav_module used zero access rights on the
+destination file and did not preserve file modification time when
+moving a file between different file systems with the MOVE method.
+*) Bugfix: the ngx_http_dav_module used default access rights when
+copying a file with the COPY method.
+*) Workaround: some clients might not work when using HTTP/2; the bug
+had appeared in 1.13.5.
+*) Bugfix: nginx could not be built with LibreSSL 2.8.0.
+Changes with nginx 1.15.2                                        24 Jul 2018
+*) Feature: the $ssl_preread_protocol variable in the
+ngx_stream_ssl_preread_module.
+*) Feature: now when using the "reset_timedout_connection" directive
+nginx will reset connections being closed with the 444 code.
+*) Change: a logging level of the "http request", "https proxy request",
+"unsupported protocol", and "version too low" SSL errors has been
+lowered from "crit" to "info".
+*) Bugfix: DNS requests were not resent if initial sending of a request
+failed.
+*) Bugfix: the "reuseport" parameter of the "listen" directive was
+ignored if the number of worker processes was specified after the
+"listen" directive.
+*) Bugfix: when using OpenSSL 1.1.0 or newer it was not possible to
+switch off "ssl_prefer_server_ciphers" in a virtual server if it was
+switched on in the default server.
+*) Bugfix: SSL session reuse with upstream servers did not work with the
+TLS 1.3 protocol.
+Changes with nginx 1.15.1                                        03 Jul 2018
+*) Feature: the "random" directive inside the "upstream" block.
+*) Feature: improved performance when using the "hash" and "ip_hash"
+directives with the "zone" directive.
+*) Feature: the "reuseport" parameter of the "listen" directive now uses
+SO_REUSEPORT_LB on FreeBSD 12.
+*) Bugfix: HTTP/2 server push did not work if SSL was terminated by a
+proxy server in front of nginx.
+*) Bugfix: the "tcp_nopush" directive was always used on backend
+connections.
+*) Bugfix: sending a disk-buffered request body to a gRPC backend might
+fail.
+Changes with nginx 1.15.0                                        05 Jun 2018
+*) Change: the "ssl" directive is deprecated; the "ssl" parameter of the
+"listen" directive should be used instead.
+*) Change: now nginx detects missing SSL certificates during
+configuration testing when using the "ssl" parameter of the "listen"
+directive.
+*) Feature: now the stream module can handle multiple incoming UDP
+datagrams from a client within a single session.
+*) Bugfix: it was possible to specify an incorrect response code in the
+"proxy_cache_valid" directive.
+*) Bugfix: nginx could not be built by gcc 8.1.
+*) Bugfix: logging to syslog stopped on local IP address changes.
+*) Bugfix: nginx could not be built by clang with CUDA SDK installed;
+the bug had appeared in 1.13.8.
+*) Bugfix: "getsockopt(TCP_FASTOPEN) ... failed" messages might appear
+in logs during binary upgrade when using unix domain listen sockets
+on FreeBSD.
+*) Bugfix: nginx could not be built on Fedora 28 Linux.
+*) Bugfix: request processing rate might exceed configured rate when
+using the "limit_req" directive.
+*) Bugfix: in handling of client addresses when using unix domain listen
+sockets to work with datagrams on Linux.
+*) Bugfix: in memory allocation error handling.
+Changes with nginx 1.13.12                                       10 Apr 2018
+*) Bugfix: connections with gRPC backends might be closed unexpectedly
+when returning a large response.
+Changes with nginx 1.13.11                                       03 Apr 2018
+*) Feature: the "proxy_protocol" parameter of the "listen" directive now
+supports the PROXY protocol version 2.
+*) Bugfix: nginx could not be built with OpenSSL 1.1.1 statically on
+Linux.
+*) Bugfix: in the "http_404", "http_500", etc. parameters of the
+"proxy_next_upstream" directive.
+Changes with nginx 1.13.10                                       20 Mar 2018
+*) Feature: the "set" parameter of the "include" SSI directive now
+allows writing arbitrary responses to a variable; the
+"subrequest_output_buffer_size" directive defines maximum response
+size.
+*) Feature: now nginx uses clock_gettime(CLOCK_MONOTONIC) if available,
+to avoid timeouts being incorrectly triggered on system time changes.
+*) Feature: the "escape=none" parameter of the "log_format" directive.
+Thanks to Johannes Baiter and Calin Don.
+*) Feature: the $ssl_preread_alpn_protocols variable in the
+ngx_stream_ssl_preread_module.
+*) Feature: the ngx_http_grpc_module.
+*) Bugfix: in memory allocation error handling in the "geo" directive.
+*) Bugfix: when using variables in the "auth_basic_user_file" directive
+a null character might appear in logs.
+Thanks to Vadim Filimonov.
+Changes with nginx 1.13.9                                        20 Feb 2018
+*) Feature: HTTP/2 server push support; the "http2_push" and
+"http2_push_preload" directives.
+*) Bugfix: "header already sent" alerts might appear in logs when using
+cache; the bug had appeared in 1.9.13.
+*) Bugfix: a segmentation fault might occur in a worker process if the
+"ssl_verify_client" directive was used and no SSL certificate was
+specified in a virtual server.
+*) Bugfix: in the ngx_http_v2_module.
+*) Bugfix: in the ngx_http_dav_module.
+Changes with nginx 1.13.8                                        26 Dec 2017
+*) Feature: now nginx automatically preserves the CAP_NET_RAW capability
+in worker processes when using the "transparent" parameter of the
+"proxy_bind", "fastcgi_bind", "memcached_bind", "scgi_bind", and
+"uwsgi_bind" directives.
+*) Feature: improved CPU cache line size detection.
+Thanks to Debayan Ghosh.
+*) Feature: new directives in vim syntax highlighting scripts.
+Thanks to Gena Makhomed.
+*) Bugfix: binary upgrade refused to work if nginx was re-parented to a
+process with PID different from 1 after its parent process has
+finished.
+*) Bugfix: the ngx_http_autoindex_module incorrectly handled requests
+with bodies.
+*) Bugfix: in the "proxy_limit_rate" directive when used with the
+"keepalive" directive.
+*) Bugfix: some parts of a response might be buffered when using
+"proxy_buffering off" if the client connection used SSL.
+Thanks to Patryk Lesiewicz.
+*) Bugfix: in the "proxy_cache_background_update" directive.
+*) Bugfix: it was not possible to start a parameter with a variable in
+the "${name}" form with the name in curly brackets without enclosing
+the parameter into single or double quotes.
+Changes with nginx 1.13.7                                        21 Nov 2017
+*) Bugfix: in the $upstream_status variable.
+*) Bugfix: a segmentation fault might occur in a worker process if a
+backend returned a "101 Switching Protocols" response to a
+subrequest.
+*) Bugfix: a segmentation fault occurred in a master process if a shared
+memory zone size was changed during a reconfiguration and the
+reconfiguration failed.
+*) Bugfix: in the ngx_http_fastcgi_module.
+*) Bugfix: nginx returned the 500 error if parameters without variables
+were specified in the "xslt_stylesheet" directive.
+*) Workaround: "gzip filter failed to use preallocated memory" alerts
+appeared in logs when using a zlib library variant from Intel.
+*) Bugfix: the "worker_shutdown_timeout" directive did not work when
+using mail proxy and when proxying WebSocket connections.
+Changes with nginx 1.13.6                                        10 Oct 2017
+*) Bugfix: switching to the next upstream server in the stream module
+did not work when using the "ssl_preread" directive.
+*) Bugfix: in the ngx_http_v2_module.
+Thanks to Piotr Sikora.
+*) Bugfix: nginx did not support dates after the year 2038 on 32-bit
+platforms with 64-bit time_t.
+*) Bugfix: in handling of dates prior to the year 1970 and after the
+year 10000.
+*) Bugfix: in the stream module timeouts waiting for UDP datagrams from
+upstream servers were not logged or logged at the "info" level
+instead of "error".
+*) Bugfix: when using HTTP/2 nginx might return the 400 response without
+logging the reason.
+*) Bugfix: in processing of corrupted cache files.
+*) Bugfix: cache control headers were ignored when caching errors
+intercepted by error_page.
+*) Bugfix: when using HTTP/2 client request body might be corrupted.
+*) Bugfix: in handling of client addresses when using unix domain
+sockets.
+*) Bugfix: nginx hogged CPU when using the "hash ... consistent"
+directive in the upstream block if large weights were used and all or
+most of the servers were unavailable.
+Changes with nginx 1.13.5                                        05 Sep 2017
+*) Feature: the $ssl_client_escaped_cert variable.
+*) Bugfix: the "ssl_session_ticket_key" directive and the "include"
+parameter of the "geo" directive did not work on Windows.
+*) Bugfix: incorrect response length was returned on 32-bit platforms
+when requesting more than 4 gigabytes with multiple ranges.
+*) Bugfix: the "expires modified" directive and processing of the
+"If-Range" request header line did not use the response last
+modification time if proxying without caching was used.
+Changes with nginx 1.13.4                                        08 Aug 2017
+*) Feature: the ngx_http_mirror_module.
+*) Bugfix: client connections might be dropped during configuration
+testing when using the "reuseport" parameter of the "listen"
+directive on Linux.
+*) Bugfix: request body might not be available in subrequests if it was
+saved to a file and proxying was used.
+*) Bugfix: cleaning cache based on the "max_size" parameter did not work
+on Windows.
+*) Bugfix: any shared memory allocation required 4096 bytes on Windows.
+*) Bugfix: nginx worker might be terminated abnormally when using the
+"zone" directive inside the "upstream" block on Windows.
+Changes with nginx 1.13.3                                        11 Jul 2017
+*) Security: a specially crafted request might result in an integer
+overflow and incorrect processing of ranges in the range filter,
+potentially resulting in sensitive information leak (CVE-2017-7529).
+Changes with nginx 1.13.2                                        27 Jun 2017
+*) Change: nginx now returns 200 instead of 416 when a range starting
+with 0 is requested from an empty file.
+*) Feature: the "add_trailer" directive.
+Thanks to Piotr Sikora.
+*) Bugfix: nginx could not be built on Cygwin and NetBSD; the bug had
+appeared in 1.13.0.
+*) Bugfix: nginx could not be built under MSYS2 / MinGW 64-bit.
+Thanks to Orgad Shaneh.
+*) Bugfix: a segmentation fault might occur in a worker process when
+using SSI with many includes and proxy_pass with variables.
+*) Bugfix: in the ngx_http_v2_module.
+Thanks to Piotr Sikora.
+Changes with nginx 1.13.1                                        30 May 2017
+*) Feature: now a hostname can be used as the "set_real_ip_from"
+directive parameter.
+*) Feature: vim syntax highlighting scripts improvements.
+*) Feature: the "worker_cpu_affinity" directive now works on DragonFly
+BSD.
+Thanks to Sepherosa Ziehau.
+*) Bugfix: SSL renegotiation on backend connections did not work when
+using OpenSSL before 1.1.0.
+*) Workaround: nginx could not be built with Oracle Developer Studio
+12.5.
+*) Workaround: now cache manager ignores long locked cache entries when
+cleaning cache based on the "max_size" parameter.
+*) Bugfix: client SSL connections were immediately closed if deferred
+accept and the "proxy_protocol" parameter of the "listen" directive
+were used.
+*) Bugfix: in the "proxy_cache_background_update" directive.
+*) Workaround: now the "tcp_nodelay" directive sets the TCP_NODELAY
+option before an SSL handshake.
+Changes with nginx 1.13.0                                        25 Apr 2017
+*) Change: SSL renegotiation is now allowed on backend connections.
+*) Feature: the "rcvbuf" and "sndbuf" parameters of the "listen"
+directives of the mail proxy and stream modules.
+*) Feature: the "return" and "error_page" directives can now be used to
+return 308 redirections.
+Thanks to Simon Leblanc.
+*) Feature: the "TLSv1.3" parameter of the "ssl_protocols" directive.
+*) Feature: when logging signals nginx now logs PID of the process which
+sent the signal.
+*) Bugfix: in memory allocation error handling.
+*) Bugfix: if a server in the stream module listened on a wildcard
+address, the source address of a response UDP datagram could differ
+from the original datagram destination address.
+Changes with nginx 1.11.13                                       04 Apr 2017
+*) Feature: the "http_429" parameter of the "proxy_next_upstream",
+"fastcgi_next_upstream", "scgi_next_upstream", and
+"uwsgi_next_upstream" directives.
+Thanks to Piotr Sikora.
+*) Bugfix: in memory allocation error handling.
+*) Bugfix: requests might hang when using the "sendfile" and
+"timer_resolution" directives on Linux.
+*) Bugfix: requests might hang when using the "sendfile" and "aio_write"
+directives with subrequests.
+*) Bugfix: in the ngx_http_v2_module.
+Thanks to Piotr Sikora.
+*) Bugfix: a segmentation fault might occur in a worker process when
+using HTTP/2.
+*) Bugfix: requests might hang when using the "limit_rate",
+"sendfile_max_chunk", "limit_req" directives, or the $r->sleep()
+embedded perl method with subrequests.
+*) Bugfix: in the ngx_http_slice_module.
+Changes with nginx 1.11.12                                       24 Mar 2017
+*) Bugfix: nginx might hog CPU; the bug had appeared in 1.11.11.
+Changes with nginx 1.11.11                                       21 Mar 2017
+*) Feature: the "worker_shutdown_timeout" directive.
+*) Feature: vim syntax highlighting scripts improvements.
+Thanks to Wei-Ko Kao.
+*) Bugfix: a segmentation fault might occur in a worker process if the
+$limit_rate variable was set to an empty string.
+*) Bugfix: the "proxy_cache_background_update",
+"fastcgi_cache_background_update", "scgi_cache_background_update",
+and "uwsgi_cache_background_update" directives might work incorrectly
+if the "if" directive was used.
+*) Bugfix: a segmentation fault might occur in a worker process if
+number of large_client_header_buffers in a virtual server was
+different from the one in the default server.
+*) Bugfix: in the mail proxy server.
+Changes with nginx 1.11.10                                       14 Feb 2017
+*) Change: cache header format has been changed, previously cached
+responses will be invalidated.
+*) Feature: support of "stale-while-revalidate" and "stale-if-error"
+extensions in the "Cache-Control" backend response header line.
+*) Feature: the "proxy_cache_background_update",
+"fastcgi_cache_background_update", "scgi_cache_background_update",
+and "uwsgi_cache_background_update" directives.
+*) Feature: nginx is now able to cache responses with the "Vary" header
+line up to 128 characters long (instead of 42 characters in previous
+versions).
+*) Feature: the "build" parameter of the "server_tokens" directive.
+Thanks to Tom Thorogood.
+*) Bugfix: "[crit] SSL_write() failed" messages might appear in logs
+when handling requests with the "Expect: 100-continue" request header
+line.
+*) Bugfix: the ngx_http_slice_module did not work in named locations.
+*) Bugfix: a segmentation fault might occur in a worker process when
+using AIO after an "X-Accel-Redirect" redirection.
+*) Bugfix: reduced memory consumption for long-lived requests using
+gzipping.
+Changes with nginx 1.11.9                                        24 Jan 2017
+*) Bugfix: nginx might hog CPU when using the stream module; the bug had
+appeared in 1.11.5.
+*) Bugfix: EXTERNAL authentication mechanism in mail proxy was accepted
+even if it was not enabled in the configuration.
+*) Bugfix: a segmentation fault might occur in a worker process if the
+"ssl_verify_client" directive of the stream module was used.
+*) Bugfix: the "ssl_verify_client" directive of the stream module might
+not work.
+*) Bugfix: closing keepalive connections due to no free worker
+connections might be too aggressive.
+Thanks to Joel Cunningham.
+*) Bugfix: an incorrect response might be returned when using the
+"sendfile" directive on FreeBSD and macOS; the bug had appeared in
+1.7.8.
+*) Bugfix: a truncated response might be stored in cache when using the
+"aio_write" directive.
+*) Bugfix: a socket leak might occur when using the "aio_write"
+directive.
+Changes with nginx 1.11.8                                        27 Dec 2016
+*) Feature: the "absolute_redirect" directive.
+*) Feature: the "escape" parameter of the "log_format" directive.
+*) Feature: client SSL certificates verification in the stream module.
+*) Feature: the "ssl_session_ticket_key" directive supports AES256
+encryption of TLS session tickets when used with 80-byte keys.
+*) Feature: vim-commentary support in vim scripts.
+Thanks to Armin Grodon.
+*) Bugfix: recursion when evaluating variables was not limited.
+*) Bugfix: in the ngx_stream_ssl_preread_module.
+*) Bugfix: if a server in an upstream in the stream module failed, it
+was considered alive only when a test connection sent to it after
+fail_timeout was closed; now a successfully established connection is
+enough.
+*) Bugfix: nginx/Windows could not be built with 64-bit Visual Studio.
+*) Bugfix: nginx/Windows could not be built with OpenSSL 1.1.0.
+Changes with nginx 1.11.7                                        13 Dec 2016
+*) Change: now in case of a client certificate verification error the
+$ssl_client_verify variable contains a string with the failure
+reason, for example, "FAILED:certificate has expired".
+*) Feature: the $ssl_ciphers, $ssl_curves, $ssl_client_v_start,
+$ssl_client_v_end, and $ssl_client_v_remain variables.
+*) Feature: the "volatile" parameter of the "map" directive.
+*) Bugfix: dependencies specified for a module were ignored while
+building dynamic modules.
+*) Bugfix: when using HTTP/2 and the "limit_req" or "auth_request"
+directives client request body might be corrupted; the bug had
+appeared in 1.11.0.
+*) Bugfix: a segmentation fault might occur in a worker process when
+using HTTP/2; the bug had appeared in 1.11.3.
+*) Bugfix: in the ngx_http_mp4_module.
+Thanks to Congcong Hu.
+*) Bugfix: in the ngx_http_perl_module.
+Changes with nginx 1.11.6                                        15 Nov 2016
+*) Change: format of the $ssl_client_s_dn and $ssl_client_i_dn variables
+has been changed to follow RFC 2253 (RFC 4514); values in the old
+format are available in the $ssl_client_s_dn_legacy and
+$ssl_client_i_dn_legacy variables.
+*) Change: when storing temporary files in a cache directory they will
+be stored in the same subdirectories as corresponding cache files
+instead of a separate subdirectory for temporary files.
+*) Feature: EXTERNAL authentication mechanism support in mail proxy.
+Thanks to Robert Norris.
+*) Feature: WebP support in the ngx_http_image_filter_module.
+*) Feature: variables support in the "proxy_method" directive.
+Thanks to Dmitry Lazurkin.
+*) Feature: the "http2_max_requests" directive in the
+ngx_http_v2_module.
+*) Feature: the "proxy_cache_max_range_offset",
+"fastcgi_cache_max_range_offset", "scgi_cache_max_range_offset", and
+"uwsgi_cache_max_range_offset" directives.
+*) Bugfix: graceful shutdown of old worker processes might require
+infinite time when using HTTP/2.
+*) Bugfix: in the ngx_http_mp4_module.
+*) Bugfix: "ignore long locked inactive cache entry" alerts might appear
+in logs when proxying WebSocket connections with caching enabled.
+*) Bugfix: nginx did not write anything to log and returned a response
+with code 502 instead of 504 when a timeout occurred during an SSL
+handshake to a backend.
+Changes with nginx 1.11.5                                        11 Oct 2016
+*) Change: the --with-ipv6 configure option was removed, now IPv6
+support is configured automatically.
+*) Change: now if there are no available servers in an upstream, nginx
+will not reset number of failures of all servers as it previously
+did, but will wait for fail_timeout to expire.
+*) Feature: the ngx_stream_ssl_preread_module.
+*) Feature: the "server" directive in the "upstream" context supports
+the "max_conns" parameter.
+*) Feature: the --with-compat configure option.
+*) Feature: "manager_files", "manager_threshold", and "manager_sleep"
+parameters of the "proxy_cache_path", "fastcgi_cache_path",
+"scgi_cache_path", and "uwsgi_cache_path" directives.
+*) Bugfix: flags passed by the --with-ld-opt configure option were not
+used while building perl module.
+*) Bugfix: in the "add_after_body" directive when used with the
+"sub_filter" directive.
+*) Bugfix: in the $realip_remote_addr variable.
+*) Bugfix: the "dav_access", "proxy_store_access",
+"fastcgi_store_access", "scgi_store_access", and "uwsgi_store_access"
+directives ignored permissions specified for user.
+*) Bugfix: unix domain listen sockets might not be inherited during
+binary upgrade on Linux.
+*) Bugfix: nginx returned the 400 response on requests with the "-"
+character in the HTTP method.
+Changes with nginx 1.11.4                                        13 Sep 2016
+*) Feature: the $upstream_bytes_received variable.
+*) Feature: the $bytes_received, $session_time, $protocol, $status,
+$upstream_addr, $upstream_bytes_sent, $upstream_bytes_received,
+$upstream_connect_time, $upstream_first_byte_time, and
+$upstream_session_time variables in the stream module.
+*) Feature: the ngx_stream_log_module.
+*) Feature: the "proxy_protocol" parameter of the "listen" directive,
+the $proxy_protocol_addr and $proxy_protocol_port variables in the
+stream module.
+*) Feature: the ngx_stream_realip_module.
+*) Bugfix: nginx could not be built with the stream module and the
+ngx_http_ssl_module, but without ngx_stream_ssl_module; the bug had
+appeared in 1.11.3.
+*) Feature: the IP_BIND_ADDRESS_NO_PORT socket option was not used; the
+bug had appeared in 1.11.2.
+*) Bugfix: in the "ranges" parameter of the "geo" directive.
+*) Bugfix: an incorrect response might be returned when using the "aio
+threads" and "sendfile" directives; the bug had appeared in 1.9.13.
+Changes with nginx 1.11.3                                        26 Jul 2016
+*) Change: now the "accept_mutex" directive is turned off by default.
+*) Feature: now nginx uses EPOLLEXCLUSIVE on Linux.
+*) Feature: the ngx_stream_geo_module.
+*) Feature: the ngx_stream_geoip_module.
+*) Feature: the ngx_stream_split_clients_module.
+*) Feature: variables support in the "proxy_pass" and "proxy_ssl_name"
+directives in the stream module.
+*) Bugfix: socket leak when using HTTP/2.
+*) Bugfix: in configure tests.
+Thanks to Piotr Sikora.
+Changes with nginx 1.11.2                                        05 Jul 2016
+*) Change: now nginx always uses internal MD5 and SHA1 implementations;
+the --with-md5 and --with-sha1 configure options were canceled.
+*) Feature: variables support in the stream module.
+*) Feature: the ngx_stream_map_module.
+*) Feature: the ngx_stream_return_module.
+*) Feature: a port can be specified in the "proxy_bind", "fastcgi_bind",
+"memcached_bind", "scgi_bind", and "uwsgi_bind" directives.
+*) Feature: now nginx uses the IP_BIND_ADDRESS_NO_PORT socket option
+when available.
+*) Bugfix: a segmentation fault might occur in a worker process when
+using HTTP/2 and the "proxy_request_buffering" directive.
+*) Bugfix: the "Content-Length" request header line was always added to
+requests passed to backends, including requests without body, when
+using HTTP/2.
+*) Bugfix: "http request count is zero" alerts might appear in logs when
+using HTTP/2.
+*) Bugfix: unnecessary buffering might occur when using the "sub_filter"
+directive; the issue had appeared in 1.9.4.
+Changes with nginx 1.11.1                                        31 May 2016
+*) Security: a segmentation fault might occur in a worker process while
+writing a specially crafted request body to a temporary file
+(CVE-2016-4450); the bug had appeared in 1.3.9.
+Changes with nginx 1.11.0                                        24 May 2016
+*) Feature: the "transparent" parameter of the "proxy_bind",
+"fastcgi_bind", "memcached_bind", "scgi_bind", and "uwsgi_bind"
+directives.
+*) Feature: the $request_id variable.
+*) Feature: the "map" directive supports combinations of multiple
+variables as resulting values.
+*) Feature: now nginx checks if EPOLLRDHUP events are supported by
+kernel, and optimizes connection handling accordingly if the "epoll"
+method is used.
+*) Feature: the "ssl_certificate" and "ssl_certificate_key" directives
+can be specified multiple times to load certificates of different
+types (for example, RSA and ECDSA).
+*) Feature: the "ssl_ecdh_curve" directive now allows specifying a list
+of curves when using OpenSSL 1.0.2 or newer; by default a list built
+into OpenSSL is used.
+*) Change: to use DHE ciphers it is now required to specify parameters
+using the "ssl_dhparam" directive.
+*) Feature: the $proxy_protocol_port variable.
+*) Feature: the $realip_remote_port variable in the
+ngx_http_realip_module.
+*) Feature: the ngx_http_realip_module is now able to set the client
+port in addition to the address.
+*) Change: the "421 Misdirected Request" response now used when
+rejecting requests to a virtual server different from one negotiated
+during an SSL handshake; this improves interoperability with some
+HTTP/2 clients when using client certificates.
+*) Change: HTTP/2 clients can now start sending request body
+immediately; the "http2_body_preread_size" directive controls size of
+the buffer used before nginx will start reading client request body.
+*) Bugfix: cached error responses were not updated when using the
+"proxy_cache_bypass" directive.
+Changes with nginx 1.9.15                                        19 Apr 2016
+*) Bugfix: "recv() failed" errors might occur when using HHVM as a
+FastCGI server.
+*) Bugfix: when using HTTP/2 and the "limit_req" or "auth_request"
+directives a timeout or a "client violated flow control" error might
+occur while reading client request body; the bug had appeared in
+1.9.14.
+*) Workaround: a response might not be shown by some browsers if HTTP/2
+was used and client request body was not fully read; the bug had
+appeared in 1.9.14.
+*) Bugfix: connections might hang when using the "aio threads"
+directive.
+Thanks to Mindaugas Rasiukevicius.
+Changes with nginx 1.9.14                                        05 Apr 2016
+*) Feature: OpenSSL 1.1.0 compatibility.
+*) Feature: the "proxy_request_buffering", "fastcgi_request_buffering",
+"scgi_request_buffering", and "uwsgi_request_buffering" directives
+now work with HTTP/2.
+*) Bugfix: "zero size buf in output" alerts might appear in logs when
+using HTTP/2.
+*) Bugfix: the "client_max_body_size" directive might work incorrectly
+when using HTTP/2.
+*) Bugfix: of minor bugs in logging.
+Changes with nginx 1.9.13                                        29 Mar 2016
+*) Change: non-idempotent requests (POST, LOCK, PATCH) are no longer
+passed to the next server by default if a request has been sent to a
+backend; the "non_idempotent" parameter of the "proxy_next_upstream"
+directive explicitly allows retrying such requests.
+*) Feature: the ngx_http_perl_module can be built dynamically.
+*) Feature: UDP support in the stream module.
+*) Feature: the "aio_write" directive.
+*) Feature: now cache manager monitors number of elements in caches and
+tries to avoid cache keys zone overflows.
+*) Bugfix: "task already active" and "second aio post" alerts might
+appear in logs when using the "sendfile" and "aio" directives with
+subrequests.
+*) Bugfix: "zero size buf in output" alerts might appear in logs if
+caching was used and a client closed a connection prematurely.
+*) Bugfix: connections with clients might be closed needlessly if
+caching was used.
+Thanks to Justin Li.
+*) Bugfix: nginx might hog CPU if the "sendfile" directive was used on
+Linux or Solaris and a file being sent was changed during sending.
+*) Bugfix: connections might hang when using the "sendfile" and "aio
+threads" directives.
+*) Bugfix: in the "proxy_pass", "fastcgi_pass", "scgi_pass", and
+"uwsgi_pass" directives when using variables.
+Thanks to Piotr Sikora.
+*) Bugfix: in the ngx_http_sub_filter_module.
+*) Bugfix: if an error occurred in a cached backend connection, the
+request was passed to the next server regardless of the
+proxy_next_upstream directive.
+*) Bugfix: "CreateFile() failed" errors when creating temporary files on
+Windows.
+Changes with nginx 1.9.12                                        24 Feb 2016
+*) Feature: Huffman encoding of response headers in HTTP/2.
+Thanks to Vlad Krasnov.
+*) Feature: the "worker_cpu_affinity" directive now supports more than
+64 CPUs.
+*) Bugfix: compatibility with 3rd party C++ modules; the bug had
+appeared in 1.9.11.
+Thanks to Piotr Sikora.
+*) Bugfix: nginx could not be built statically with OpenSSL on Linux;
+the bug had appeared in 1.9.11.
+*) Bugfix: the "add_header ... always" directive with an empty value did
+not delete "Last-Modified" and "ETag" header lines from error
+responses.
+*) Workaround: "called a function you should not call" and "shutdown
+while in init" messages might appear in logs when using OpenSSL
+1.0.2f.
+*) Bugfix: invalid headers might be logged incorrectly.
+*) Bugfix: socket leak when using HTTP/2.
+*) Bugfix: in the ngx_http_v2_module.
+Changes with nginx 1.9.11                                        09 Feb 2016
+*) Feature: TCP support in resolver.
+*) Feature: dynamic modules.
+*) Bugfix: the $request_length variable did not include size of request
+headers when using HTTP/2.
+*) Bugfix: in the ngx_http_v2_module.
+Changes with nginx 1.9.10                                        26 Jan 2016
+*) Security: invalid pointer dereference might occur during DNS server
+response processing if the "resolver" directive was used, allowing an
+attacker who is able to forge UDP packets from the DNS server to
+cause segmentation fault in a worker process (CVE-2016-0742).
+*) Security: use-after-free condition might occur during CNAME response
+processing if the "resolver" directive was used, allowing an attacker
+who is able to trigger name resolution to cause segmentation fault in
+a worker process, or might have potential other impact
+(CVE-2016-0746).
+*) Security: CNAME resolution was insufficiently limited if the
+"resolver" directive was used, allowing an attacker who is able to
+trigger arbitrary name resolution to cause excessive resource
+consumption in worker processes (CVE-2016-0747).
+*) Feature: the "auto" parameter of the "worker_cpu_affinity" directive.
+*) Bugfix: the "proxy_protocol" parameter of the "listen" directive did
+not work with IPv6 listen sockets.
+*) Bugfix: connections to upstream servers might be cached incorrectly
+when using the "keepalive" directive.
+*) Bugfix: proxying used the HTTP method of the original request after
+an "X-Accel-Redirect" redirection.
+Changes with nginx 1.9.9                                         09 Dec 2015
+*) Bugfix: proxying to unix domain sockets did not work when using
+variables; the bug had appeared in 1.9.8.
+Changes with nginx 1.9.8                                         08 Dec 2015
+*) Feature: pwritev() support.
+*) Feature: the "include" directive inside the "upstream" block.
+*) Feature: the ngx_http_slice_module.
+*) Bugfix: a segmentation fault might occur in a worker process when
+using LibreSSL; the bug had appeared in 1.9.6.
+*) Bugfix: nginx could not be built on OS X in some cases.
+Changes with nginx 1.9.7                                         17 Nov 2015
+*) Feature: the "nohostname" parameter of logging to syslog.
+*) Feature: the "proxy_cache_convert_head" directive.
+*) Feature: the $realip_remote_addr variable in the
+ngx_http_realip_module.
+*) Bugfix: the "expires" directive might not work when using variables.
+*) Bugfix: a segmentation fault might occur in a worker process when
+using HTTP/2; the bug had appeared in 1.9.6.
+*) Bugfix: if nginx was built with the ngx_http_v2_module it was
+possible to use the HTTP/2 protocol even if the "http2" parameter of
+the "listen" directive was not specified.
+*) Bugfix: in the ngx_http_v2_module.
+Changes with nginx 1.9.6                                         27 Oct 2015
+*) Bugfix: a segmentation fault might occur in a worker process when
+using HTTP/2.
+Thanks to Piotr Sikora and Denis Andzakovic.
+*) Bugfix: the $server_protocol variable was empty when using HTTP/2.
+*) Bugfix: backend SSL connections in the stream module might be timed
+out unexpectedly.
+*) Bugfix: a segmentation fault might occur in a worker process if
+different ssl_session_cache settings were used in different virtual
+servers.
+*) Bugfix: nginx/Windows could not be built with MinGW gcc; the bug had
+appeared in 1.9.4.
+Thanks to Kouhei Sutou.
+*) Bugfix: time was not updated when the timer_resolution directive was
+used on Windows.
+*) Miscellaneous minor fixes and improvements.
+Thanks to Markus Linnala, Kurtis Nusbaum and Piotr Sikora.
+Changes with nginx 1.9.5                                         22 Sep 2015
+*) Feature: the ngx_http_v2_module (replaces ngx_http_spdy_module).
+Thanks to Dropbox and Automattic for sponsoring this work.
+*) Change: now the "output_buffers" directive uses two buffers by
+default.
+*) Change: now nginx limits subrequests recursion, not simultaneous
+subrequests.
+*) Change: now nginx checks the whole cache key when returning a
+response from cache.
+Thanks to Gena Makhomed and Sergey Brester.
+*) Bugfix: "header already sent" alerts might appear in logs when using
+cache; the bug had appeared in 1.7.5.
+*) Bugfix: "writev() failed (4: Interrupted system call)" errors might
+appear in logs when using CephFS and the "timer_resolution" directive
+on Linux.
+*) Bugfix: in invalid configurations handling.
+Thanks to Markus Linnala.
+*) Bugfix: a segmentation fault occurred in a worker process if the
+"sub_filter" directive was used at http level; the bug had appeared
+in 1.9.4.
+Changes with nginx 1.9.4                                         18 Aug 2015
+*) Change: the "proxy_downstream_buffer" and "proxy_upstream_buffer"
+directives of the stream module are replaced with the
+"proxy_buffer_size" directive.
+*) Feature: the "tcp_nodelay" directive in the stream module.
+*) Feature: multiple "sub_filter" directives can be used simultaneously.
+*) Feature: variables support in the search string of the "sub_filter"
+directive.
+*) Workaround: configuration testing might fail under Linux OpenVZ.
+Thanks to Gena Makhomed.
+*) Bugfix: old worker processes might hog CPU after reconfiguration with
+a large number of worker_connections.
+*) Bugfix: a segmentation fault might occur in a worker process if the
+"try_files" and "alias" directives were used inside a location given
+by a regular expression; the bug had appeared in 1.7.1.
+*) Bugfix: the "try_files" directive inside a nested location given by a
+regular expression worked incorrectly if the "alias" directive was
+used in the outer location.
+*) Bugfix: in hash table initialization error handling.
+*) Bugfix: nginx could not be built with Visual Studio 2015.
+Changes with nginx 1.9.3                                         14 Jul 2015
+*) Change: duplicate "http", "mail", and "stream" blocks are now
+disallowed.
+*) Feature: connection limiting in the stream module.
+*) Feature: data rate limiting in the stream module.
+*) Bugfix: the "zone" directive inside the "upstream" block did not work
+on Windows.
+*) Bugfix: compatibility with LibreSSL in the stream module.
+Thanks to Piotr Sikora.
+*) Bugfix: in the "--builddir" configure parameter.
+Thanks to Piotr Sikora.
+*) Bugfix: the "ssl_stapling_file" directive did not work; the bug had
+appeared in 1.9.2.
+Thanks to Faidon Liambotis and Brandon Black.
+*) Bugfix: a segmentation fault might occur in a worker process if the
+"ssl_stapling" directive was used; the bug had appeared in 1.9.2.
+Thanks to Matthew Baldwin.
+Changes with nginx 1.9.2                                         16 Jun 2015
+*) Feature: the "backlog" parameter of the "listen" directives of the
+mail proxy and stream modules.
+*) Feature: the "allow" and "deny" directives in the stream module.
+*) Feature: the "proxy_bind" directive in the stream module.
+*) Feature: the "proxy_protocol" directive in the stream module.
+*) Feature: the -T switch.
+*) Feature: the REQUEST_SCHEME parameter added to the fastcgi.conf,
+fastcgi_params, scgi_params, and uwsgi_params standard configuration
+files.
+*) Bugfix: the "reuseport" parameter of the "listen" directive of the
+stream module did not work.
+*) Bugfix: OCSP stapling might return an expired OCSP response in some
+cases.
+Changes with nginx 1.9.1                                         26 May 2015
+*) Change: now SSLv3 protocol is disabled by default.
+*) Change: some long deprecated directives are not supported anymore.
+*) Feature: the "reuseport" parameter of the "listen" directive.
+Thanks to Yingqi Lu at Intel and Sepherosa Ziehau.
+*) Feature: the $upstream_connect_time variable.
+*) Bugfix: in the "hash" directive on big-endian platforms.
+*) Bugfix: nginx might fail to start on some old Linux variants; the bug
+had appeared in 1.7.11.
+*) Bugfix: in IP address parsing.
+Thanks to Sergey Polovko.
+Changes with nginx 1.9.0                                         28 Apr 2015
+*) Change: obsolete aio and rtsig event methods have been removed.
+*) Feature: the "zone" directive inside the "upstream" block.
+*) Feature: the stream module.
+*) Feature: byte ranges support in the ngx_http_memcached_module.
+Thanks to Martin Mlynář.
+*) Feature: shared memory can now be used on Windows versions with
+address space layout randomization.
+Thanks to Sergey Brester.
+*) Feature: the "error_log" directive can now be used on mail and server
+levels in mail proxy.
+*) Bugfix: the "proxy_protocol" parameter of the "listen" directive did
+not work if not specified in the first "listen" directive for a
+listen socket.
+Changes with nginx 1.7.12                                        07 Apr 2015
+*) Feature: now the "tcp_nodelay" directive works with backend SSL
+connections.
+*) Feature: now thread pools can be used to read cache file headers.
+*) Bugfix: in the "proxy_request_buffering" directive.
+*) Bugfix: a segmentation fault might occur in a worker process when
+using thread pools on Linux.
+*) Bugfix: in error handling when using the "ssl_stapling" directive.
+Thanks to Filipe da Silva.
+*) Bugfix: in the ngx_http_spdy_module.
+Changes with nginx 1.7.11                                        24 Mar 2015
+*) Change: the "sendfile" parameter of the "aio" directive is
+deprecated; now nginx automatically uses AIO to pre-load data for
+sendfile if both "aio" and "sendfile" directives are used.
+*) Feature: experimental thread pools support.
+*) Feature: the "proxy_request_buffering", "fastcgi_request_buffering",
+"scgi_request_buffering", and "uwsgi_request_buffering" directives.
+*) Feature: request body filters experimental API.
+*) Feature: client SSL certificates support in mail proxy.
+Thanks to Sven Peter, Franck Levionnois, and Filipe Da Silva.
+*) Feature: startup speedup when using the "hash ... consistent"
+directive in the upstream block.
+Thanks to Wai Keen Woon.
+*) Feature: debug logging into a cyclic memory buffer.
+*) Bugfix: in hash table handling.
+Thanks to Chris West.
+*) Bugfix: in the "proxy_cache_revalidate" directive.
+*) Bugfix: SSL connections might hang if deferred accept or the
+"proxy_protocol" parameter of the "listen" directive were used.
+Thanks to James Hamlin.
+*) Bugfix: the $upstream_response_time variable might contain a wrong
+value if the "image_filter" directive was used.
+*) Bugfix: in integer overflow handling.
+Thanks to Régis Leroy.
+*) Bugfix: it was not possible to enable SSLv3 with LibreSSL.
+*) Bugfix: the "ignoring stale global SSL error ... called a function
+you should not call" alerts appeared in logs when using LibreSSL.
+*) Bugfix: certificates specified by the "ssl_client_certificate" and
+"ssl_trusted_certificate" directives were inadvertently used to
+automatically construct certificate chains.
+Changes with nginx 1.7.10                                        10 Feb 2015
+*) Feature: the "use_temp_path" parameter of the "proxy_cache_path",
+"fastcgi_cache_path", "scgi_cache_path", and "uwsgi_cache_path"
+directives.
+*) Feature: the $upstream_header_time variable.
+*) Workaround: now on disk overflow nginx tries to write error logs once
+a second only.
+*) Bugfix: the "try_files" directive did not ignore normal files while
+testing directories.
+Thanks to Damien Tournoud.
+*) Bugfix: alerts "sendfile() failed" if the "sendfile" directive was
+used on OS X; the bug had appeared in 1.7.8.
+*) Bugfix: alerts "sem_post() failed" might appear in logs.
+*) Bugfix: nginx could not be built with musl libc.
+Thanks to James Taylor.
+*) Bugfix: nginx could not be built on Tru64 UNIX.
+Thanks to Goetz T. Fischer.
+Changes with nginx 1.7.9                                         23 Dec 2014
+*) Feature: variables support in the "proxy_cache", "fastcgi_cache",
+"scgi_cache", and "uwsgi_cache" directives.
+*) Feature: variables support in the "expires" directive.
+*) Feature: loading of secret keys from hardware tokens with OpenSSL
+engines.
+Thanks to Dmitrii Pichulin.
+*) Feature: the "autoindex_format" directive.
+*) Bugfix: cache revalidation is now only used for responses with 200
+and 206 status codes.
+Thanks to Piotr Sikora.
+*) Bugfix: the "TE" client request header line was passed to backends
+while proxying.
+*) Bugfix: the "proxy_pass", "fastcgi_pass", "scgi_pass", and
+"uwsgi_pass" directives might not work correctly inside the "if" and
+"limit_except" blocks.
+*) Bugfix: the "proxy_store" directive with the "on" parameter was
+ignored if the "proxy_store" directive with an explicitly specified
+file path was used on a previous level.
+*) Bugfix: nginx could not be built with BoringSSL.
+Thanks to Lukas Tribus.
+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.
+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 1.7.6                                         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 1.7.5                                         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 1.7.4                                         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 1.7.3                                         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 1.7.2                                         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 1.7.1                                         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 1.7.0                                         24 Apr 2014
+*) Feature: backend SSL certificate verification.
+*) Feature: support for SNI while working with SSL backends.
+*) Feature: the $ssl_server_name variable.
+*) Feature: the "if" parameter of the "access_log" directive.
+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 1.5.12                                        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 1.5.11                                        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 $upstream_status variable might contain wrong data if the
+"proxy_cache_use_stale" or "proxy_cache_revalidate" directives were
+used.
+Thanks to Piotr Sikora.
+*) Bugfix: a segmentation fault might occur in a worker process if
+errors with code 400 were redirected to a named location using the
+"error_page" directive.
+*) Bugfix: nginx/Windows could not be built with Visual Studio 2013.
+Changes with nginx 1.5.10                                        04 Feb 2014
+*) Feature: the ngx_http_spdy_module now uses SPDY 3.1 protocol.
+Thanks to Automattic and MaxCDN for sponsoring this work.
+*) Feature: the ngx_http_mp4_module now skips tracks too short for a
+seek requested.
+*) Bugfix: a segmentation fault might occur in a worker process if the
+$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 1.5.9                                         22 Jan 2014
+*) Change: now nginx expects escaped URIs in "X-Accel-Redirect" headers.
+*) Feature: the "ssl_buffer_size" directive.
+*) Feature: the "limit_rate" directive can now be used to rate limit
+responses sent in SPDY connections.
+*) Feature: the "spdy_chunk_size" directive.
+*) Feature: the "ssl_session_tickets" directive.
+Thanks to Dirkjan Bussink.
+*) Bugfix: the $ssl_session_id variable contained full session
+serialized instead of just a session id.
+Thanks to Ivan Ristić.
+*) Bugfix: nginx incorrectly handled escaped "?" character in the
+"include" SSI command.
+*) Bugfix: the ngx_http_dav_module did not unescape destination URI of
+the COPY and MOVE methods.
+*) Bugfix: resolver did not understand domain names with a trailing dot.
+Thanks to Yichun Zhang.
+*) Bugfix: alerts "zero size buf in output" might appear in logs while
+proxying; the bug had appeared in 1.3.9.
+*) Bugfix: a segmentation fault might occur in a worker process if the
+ngx_http_spdy_module was used.
+*) Bugfix: proxied WebSocket connections might hang right after
+handshake if the select, poll, or /dev/poll methods were used.
+*) Bugfix: the "xclient" directive of the mail proxy module incorrectly
+handled IPv6 client addresses.
+Changes with nginx 1.5.8                                         17 Dec 2013
+*) Feature: IPv6 support in resolver.
+*) Feature: the "listen" directive supports the "fastopen" parameter.
+Thanks to Mathew Rodley.
+*) Feature: SSL support in the ngx_http_uwsgi_module.
+Thanks to Roberto De Ioris.
+*) Feature: vim syntax highlighting scripts were added to contrib.
+Thanks to Evan Miller.
+*) Bugfix: a timeout might occur while reading client request body in an
+SSL connection using chunked transfer encoding.
+*) Bugfix: the "master_process" directive did not work correctly in
+nginx/Windows.
+*) Bugfix: the "setfib" parameter of the "listen" directive might not
+work.
+*) Bugfix: in the ngx_http_spdy_module.
+Changes with nginx 1.5.7                                         19 Nov 2013
+*) Security: a character following an unescaped space in a request line
+was handled incorrectly (CVE-2013-4547); the bug had appeared in
+0.8.41.
+Thanks to Ivan Fratric of the Google Security Team.
+*) Change: a logging level of auth_basic errors about no user/password
+provided has been lowered from "error" to "info".
+*) Feature: the "proxy_cache_revalidate", "fastcgi_cache_revalidate",
+"scgi_cache_revalidate", and "uwsgi_cache_revalidate" directives.
+*) Feature: the "ssl_session_ticket_key" directive.
+Thanks to Piotr Sikora.
+*) Bugfix: the directive "add_header Cache-Control ''" added a
+"Cache-Control" response header line with an empty value.
+*) Bugfix: the "satisfy any" directive might return 403 error instead of
+401 if auth_request and auth_basic directives were used.
+Thanks to Jan Marc Hoffmann.
+*) Bugfix: the "accept_filter" and "deferred" parameters of the "listen"
+directive were ignored for listen sockets created during binary
+upgrade.
+Thanks to Piotr Sikora.
+*) Bugfix: some data received from a backend with unbufferred proxy
+might not be sent to a client immediately if "gzip" or "gunzip"
+directives were used.
+Thanks to Yichun Zhang.
+*) Bugfix: in error handling in ngx_http_gunzip_filter_module.
+*) Bugfix: responses might hang if the ngx_http_spdy_module was used
+with the "auth_request" directive.
+*) Bugfix: memory leak in nginx/Windows.
+Changes with nginx 1.5.6                                         01 Oct 2013
+*) Feature: the "fastcgi_buffering" directive.
+*) Feature: the "proxy_ssl_protocols" and "proxy_ssl_ciphers"
+directives.
+Thanks to Piotr Sikora.
+*) Feature: optimization of SSL handshakes when using long certificate
+chains.
+*) Feature: the mail proxy supports SMTP pipelining.
+*) Bugfix: in the ngx_http_auth_basic_module when using "$apr1$"
+password encryption method.
+Thanks to Markus Linnala.
+*) Bugfix: in MacOSX, Cygwin, and nginx/Windows incorrect location might
+be used to process a request if locations were given using characters
+in different cases.
+*) Bugfix: automatic redirect with appended trailing slash for proxied
+locations might not work.
+*) Bugfix: in the mail proxy server.
+*) Bugfix: in the ngx_http_spdy_module.
+Changes with nginx 1.5.5                                         17 Sep 2013
+*) Change: now nginx assumes HTTP/1.0 by default if it is not able to
+detect protocol reliably.
+*) Feature: the "disable_symlinks" directive now uses O_PATH on Linux.
+*) Feature: now nginx uses EPOLLRDHUP events to detect premature
+connection close by clients if the "epoll" method is used.
+*) Bugfix: in the "valid_referers" directive if the "server_names"
+parameter was used.
+*) Bugfix: the $request_time variable did not work in nginx/Windows.
+*) Bugfix: in the "image_filter" directive.
+Thanks to Lanshun Zhou.
+*) Bugfix: OpenSSL 1.0.1f compatibility.
+Thanks to Piotr Sikora.
+Changes with nginx 1.5.4                                         27 Aug 2013
+*) Change: the "js" extension MIME type has been changed to
+"application/javascript"; default value of the "charset_types"
+directive was changed accordingly.
+*) Change: now the "image_filter" directive with the "size" parameter
+returns responses with the "application/json" MIME type.
+*) Feature: the ngx_http_auth_request_module.
+*) Bugfix: a segmentation fault might occur on start or during
+reconfiguration if the "try_files" directive was used with an empty
+parameter.
+*) Bugfix: memory leak if relative paths were specified using variables
+in the "root" or "auth_basic_user_file" directives.
+*) Bugfix: the "valid_referers" directive incorrectly executed regular
+expressions if a "Referer" header started with "https://".
+Thanks to Liangbin Li.
+*) Bugfix: responses might hang if subrequests were used and an SSL
+handshake error happened during subrequest processing.
+Thanks to Aviram Cohen.
+*) Bugfix: in the ngx_http_autoindex_module.
+*) Bugfix: in the ngx_http_spdy_module.
+Changes with nginx 1.5.3                                         30 Jul 2013
+*) Change in internal API: now u->length defaults to -1 if working with
+backends in unbuffered mode.
+*) Change: now after receiving an incomplete response from a backend
+server nginx tries to send an available part of the response to a
+client, and then closes client connection.
+*) Bugfix: a segmentation fault might occur in a worker process if the
+ngx_http_spdy_module was used with the "client_body_in_file_only"
+directive.
+*) Bugfix: the "so_keepalive" parameter of the "listen" directive might
+be handled incorrectly on DragonFlyBSD.
+Thanks to Sepherosa Ziehau.
+*) Bugfix: in the ngx_http_xslt_filter_module.
+*) Bugfix: in the ngx_http_sub_filter_module.
+Changes with nginx 1.5.2                                         02 Jul 2013
+*) Feature: now several "error_log" directives can be used.
+*) Bugfix: the $r->header_in() embedded perl method did not return value
+of the "Cookie" and "X-Forwarded-For" request header lines; the bug
+had appeared in 1.3.14.
+*) Bugfix: in the ngx_http_spdy_module.
+Thanks to Jim Radford.
+*) Bugfix: nginx could not be built on Linux with x32 ABI.
+Thanks to Serguei Ivantsov.
+Changes with nginx 1.5.1                                         04 Jun 2013
+*) Feature: the "ssi_last_modified", "sub_filter_last_modified", and
+"xslt_last_modified" directives.
+Thanks to Alexey Kolpakov.
+*) Feature: the "http_403" parameter of the "proxy_next_upstream",
+"fastcgi_next_upstream", "scgi_next_upstream", and
+"uwsgi_next_upstream" directives.
+*) Feature: the "allow" and "deny" directives now support unix domain
+sockets.
+*) Bugfix: nginx could not be built with the ngx_mail_ssl_module, but
+without ngx_http_ssl_module; the bug had appeared in 1.3.14.
+*) Bugfix: in the "proxy_set_body" directive.
+Thanks to Lanshun Zhou.
+*) Bugfix: in the "lingering_time" directive.
+Thanks to Lanshun Zhou.
+*) Bugfix: the "fail_timeout" parameter of the "server" directive in the
+"upstream" context might not work if "max_fails" parameter was used;
+the bug had appeared in 1.3.0.
+*) Bugfix: a segmentation fault might occur in a worker process if the
+"ssl_stapling" directive was used.
+Thanks to Piotr Sikora.
+*) Bugfix: in the mail proxy server.
+Thanks to Filipe Da Silva.
+*) Bugfix: nginx/Windows might stop accepting connections if several
+worker processes were used.
+Changes with nginx 1.5.0                                         07 May 2013
+*) Security: a stack-based buffer overflow might occur in a worker
+process while handling a specially crafted request, potentially
+resulting in arbitrary code execution (CVE-2013-2028); the bug had
+appeared in 1.3.9.
+Thanks to Greg MacManus, iSIGHT Partners Labs.
+Changes with nginx 1.4.0                                         24 Apr 2013
+*) Bugfix: nginx could not be built with the ngx_http_perl_module if the
+--with-openssl option was used; the bug had appeared in 1.3.16.
+*) Bugfix: in a request body handling in the ngx_http_perl_module; the
+bug had appeared in 1.3.9.
+Changes with nginx 1.3.16                                        16 Apr 2013
+*) Bugfix: a segmentation fault might occur in a worker process if
+subrequests were used; the bug had appeared in 1.3.9.
+*) Bugfix: the "tcp_nodelay" directive caused an error if a WebSocket
+connection was proxied into a unix domain socket.
+*) Bugfix: the $upstream_response_length variable has an incorrect value
+"0" if buffering was not used.
+Thanks to Piotr Sikora.
+*) Bugfix: in the eventport and /dev/poll methods.
+Changes with nginx 1.3.15                                        26 Mar 2013
+*) Change: opening and closing a connection without sending any data in
+it is no longer logged to access_log with error code 400.
+*) Feature: the ngx_http_spdy_module.
+Thanks to Automattic for sponsoring this work.
+*) Feature: the "limit_req_status" and "limit_conn_status" directives.
+Thanks to Nick Marden.
+*) Feature: the "image_filter_interlace" directive.
+Thanks to Ian Babrou.
+*) Feature: $connections_waiting variable in the
+ngx_http_stub_status_module.
+*) Feature: the mail proxy module now supports IPv6 backends.
+*) Bugfix: request body might be transmitted incorrectly when retrying a
+request to the next upstream server; the bug had appeared in 1.3.9.
+Thanks to Piotr Sikora.
+*) Bugfix: in the "client_body_in_file_only" directive; the bug had
+appeared in 1.3.9.
+*) Bugfix: responses might hang if subrequests were used and a DNS error
+happened during subrequest processing.
+Thanks to Lanshun Zhou.
+*) Bugfix: in backend usage accounting.
+Changes with nginx 1.3.14                                        05 Mar 2013
+*) Feature: $connections_active, $connections_reading, and
+$connections_writing variables in the ngx_http_stub_status_module.
+*) Feature: support of WebSocket connections in the
+ngx_http_uwsgi_module and ngx_http_scgi_module.
+*) Bugfix: in virtual servers handling with SNI.
+*) Bugfix: new sessions were not always stored if the "ssl_session_cache
+shared" directive was used and there was no free space in shared
+memory.
+Thanks to Piotr Sikora.
+*) Bugfix: multiple X-Forwarded-For headers were handled incorrectly.
+Thanks to Neal Poole for sponsoring this work.
+*) Bugfix: in the ngx_http_mp4_module.
+Thanks to Gernot Vormayr.
+Changes with nginx 1.3.13                                        19 Feb 2013
+*) Change: a compiler with name "cc" is now used by default.
+*) Feature: support for proxying of WebSocket connections.
+Thanks to Apcera and CloudBees for sponsoring this work.
+*) Feature: the "auth_basic_user_file" directive supports "{SHA}"
+password encryption method.
+Thanks to Louis Opter.
+Changes with nginx 1.3.12                                        05 Feb 2013
+*) Feature: variables support in the "proxy_bind", "fastcgi_bind",
+"memcached_bind", "scgi_bind", and "uwsgi_bind" directives.
+*) Feature: the $pipe, $request_length, $time_iso8601, and $time_local
+variables can now be used not only in the "log_format" directive.
+Thanks to Kiril Kalchev.
+*) Feature: IPv6 support in the ngx_http_geoip_module.
+Thanks to Gregor Kališnik.
+*) Bugfix: in the "proxy_method" directive.
+*) Bugfix: a segmentation fault might occur in a worker process if
+resolver was used with the poll method.
+*) Bugfix: nginx might hog CPU during SSL handshake with a backend if
+the select, poll, or /dev/poll methods were used.
+*) Bugfix: the "[crit] SSL_write() failed (SSL:)" error.
+*) Bugfix: in the "client_body_in_file_only" directive; the bug had
+appeared in 1.3.9.
+*) Bugfix: in the "fastcgi_keep_conn" directive.
+Changes with nginx 1.3.11                                        10 Jan 2013
+*) Bugfix: a segmentation fault might occur if logging was used; the bug
+had appeared in 1.3.10.
+*) Bugfix: the "proxy_pass" directive did not work with IP addresses
+without port specified; the bug had appeared in 1.3.10.
+*) Bugfix: a segmentation fault occurred on start or during
+reconfiguration if the "keepalive" directive was specified more than
+once in a single upstream block.
+*) Bugfix: parameter "default" of the "geo" directive did not set
+default value for IPv6 addresses.
+Changes with nginx 1.3.10                                        25 Dec 2012
+*) Change: domain names specified in configuration file are now resolved
+to IPv6 addresses as well as IPv4 ones.
+*) Change: now if the "include" directive with mask is used on Unix
+systems, included files are sorted in alphabetical order.
+*) Change: the "add_header" directive adds headers to 201 responses.
+*) Feature: the "geo" directive now supports IPv6 addresses in CIDR
+notation.
+*) Feature: the "flush" and "gzip" parameters of the "access_log"
+directive.
+*) Feature: variables support in the "auth_basic" directive.
+*) Bugfix: nginx could not be built with the ngx_http_perl_module in
+some cases.
+*) Bugfix: a segmentation fault might occur in a worker process if the
+ngx_http_xslt_module was used.
+*) Bugfix: nginx could not be built on MacOSX in some cases.
+Thanks to Piotr Sikora.
+*) Bugfix: the "limit_rate" directive with high rates might result in
+truncated responses on 32-bit platforms.
+Thanks to Alexey Antropov.
+*) Bugfix: a segmentation fault might occur in a worker process if the
+"if" directive was used.
+Thanks to Piotr Sikora.
+*) Bugfix: a "100 Continue" response was issued with "413 Request Entity
+Too Large" responses.
+*) Bugfix: the "image_filter", "image_filter_jpeg_quality" and
+"image_filter_sharpen" directives might be inherited incorrectly.
+Thanks to Ian Babrou.
+*) Bugfix: "crypt_r() failed" errors might appear if the "auth_basic"
+directive was used on Linux.
+*) Bugfix: in backup servers handling.
+Thanks to Thomas Chen.
+*) Bugfix: proxied HEAD requests might return incorrect response if the
+"gzip" directive was used.
+Changes with nginx 1.3.9                                         27 Nov 2012
+*) Feature: support for chunked transfer encoding while reading client
+request body.
+*) Feature: the $request_time and $msec variables can now be used not
+only in the "log_format" directive.
+*) Bugfix: cache manager and cache loader processes might not be able to
+start if more than 512 listen sockets were used.
+*) Bugfix: in the ngx_http_dav_module.
+Changes with nginx 1.3.8                                         30 Oct 2012
+*) Feature: the "optional_no_ca" parameter of the "ssl_verify_client"
+directive.
+Thanks to Mike Kazantsev and Eric O'Connor.
+*) Feature: the $bytes_sent, $connection, and $connection_requests
+variables can now be used not only in the "log_format" directive.
+Thanks to Benjamin Grössing.
+*) Feature: the "auto" parameter of the "worker_processes" directive.
+*) Bugfix: "cache file ... has md5 collision" alert.
+*) Bugfix: in the ngx_http_gunzip_filter_module.
+*) Bugfix: in the "ssl_stapling" directive.
+Changes with nginx 1.3.7                                         02 Oct 2012
+*) Feature: OCSP stapling support.
+Thanks to Comodo, DigiCert and GlobalSign for sponsoring this work.
+*) Feature: the "ssl_trusted_certificate" directive.
+*) Feature: resolver now randomly rotates addresses returned from cache.
+Thanks to Anton Jouline.
+*) Bugfix: OpenSSL 0.9.7 compatibility.
+Changes with nginx 1.3.6                                         12 Sep 2012
+*) Feature: the ngx_http_gunzip_filter_module.
+*) Feature: the "memcached_gzip_flag" directive.
+*) Feature: the "always" parameter of the "gzip_static" directive.
+*) Bugfix: in the "limit_req" directive; the bug had appeared in 1.1.14.
+Thanks to Charles Chen.
+*) Bugfix: nginx could not be built by gcc 4.7 with -O2 optimization if
+the --with-ipv6 option was used.
+Changes with nginx 1.3.5                                         21 Aug 2012
+*) Change: the ngx_http_mp4_module module no longer skips tracks in
+formats other than H.264 and AAC.
+*) Bugfix: a segmentation fault might occur in a worker process if the
+"map" directive was used with variables as values.
+*) Bugfix: a segmentation fault might occur in a worker process if the
+"geo" directive was used with the "ranges" parameter but without the
+"default" parameter; the bug had appeared in 0.8.43.
+Thanks to Zhen Chen and Weibin Yao.
+*) Bugfix: in the -p command-line parameter handling.
+*) Bugfix: in the mail proxy server.
+*) Bugfix: of minor potential bugs.
+Thanks to Coverity.
+*) Bugfix: nginx/Windows could not be built with Visual Studio 2005
+Express.
+Thanks to HAYASHI Kentaro.
+Changes with nginx 1.3.4                                         31 Jul 2012
+*) Change: the "ipv6only" parameter is now turned on by default for
+listening IPv6 sockets.
+*) Feature: the Clang compiler support.
+*) Bugfix: extra listening sockets might be created.
+Thanks to Roman Odaisky.
+*) Bugfix: nginx/Windows might hog CPU if a worker process failed to
+start.
+Thanks to Ricardo Villalobos Guevara.
+*) Bugfix: the "proxy_pass_header", "fastcgi_pass_header",
+"scgi_pass_header", "uwsgi_pass_header", "proxy_hide_header",
+"fastcgi_hide_header", "scgi_hide_header", and "uwsgi_hide_header"
+directives might be inherited incorrectly.
+Changes with nginx 1.3.3                                         10 Jul 2012
+*) Feature: entity tags support and the "etag" directive.
+*) Bugfix: trailing dot in a source value was not ignored if the "map"
+directive was used with the "hostnames" parameter.
+*) Bugfix: incorrect location might be used to process a request if a
+URI was changed via a "rewrite" directive before an internal redirect
+to a named location.
+Changes with nginx 1.3.2                                         26 Jun 2012
+*) Change: the "single" parameter of the "keepalive" directive is now
+ignored.
+*) Change: SSL compression is now disabled when using all versions of
+OpenSSL, including ones prior to 1.0.0.
+*) Feature: it is now possible to use the "ip_hash" directive to balance
+IPv6 clients.
+*) Feature: the $status variable can now be used not only in the
+"log_format" directive.
+*) Bugfix: a segmentation fault might occur in a worker process on
+shutdown if the "resolver" directive was used.
+*) Bugfix: a segmentation fault might occur in a worker process if the
+ngx_http_mp4_module was used.
+*) Bugfix: in the ngx_http_mp4_module.
+*) Bugfix: a segmentation fault might occur in a worker process if
+conflicting wildcard server names were used.
+*) Bugfix: nginx might be terminated abnormally on a SIGBUS signal on
+ARM platform.
+*) Bugfix: an alert "sendmsg() failed (9: Bad file number)" on HP-UX
+while reconfiguration.
+Changes with nginx 1.3.1                                         05 Jun 2012
+*) Security: now nginx/Windows ignores trailing dot in URI path
+component, and does not allow URIs with ":$" in it.
+Thanks to Vladimir Kochetkov, Positive Research Center.
+*) Feature: the "proxy_pass", "fastcgi_pass", "scgi_pass", "uwsgi_pass"
+directives, and the "server" directive inside the "upstream" block,
+now support IPv6 addresses.
+*) Feature: the "resolver" directive now supports IPv6 addresses and an
+optional port specification.
+*) Feature: the "least_conn" directive inside the "upstream" block.
+*) Feature: it is now possible to specify a weight for servers while
+using the "ip_hash" directive.
+*) Bugfix: a segmentation fault might occur in a worker process if the
+"image_filter" directive was used; the bug had appeared in 1.3.0.
+*) Bugfix: nginx could not be built with ngx_cpp_test_module; the bug
+had appeared in 1.1.12.
+*) Bugfix: access to variables from SSI and embedded perl module might
+not work after reconfiguration.
+Thanks to Yichun Zhang.
+*) Bugfix: in the ngx_http_xslt_filter_module.
+Thanks to Kuramoto Eiji.
+*) Bugfix: memory leak if $geoip_org variable was used.
+Thanks to Denis F. Latypoff.
+*) Bugfix: in the "proxy_cookie_domain" and "proxy_cookie_path"
+directives.
+Changes with nginx 1.3.0                                         15 May 2012
+*) Feature: the "debug_connection" directive now supports IPv6 addresses
+and the "unix:" parameter.
+*) Feature: the "set_real_ip_from" directive and the "proxy" parameter
+of the "geo" directive now support IPv6 addresses.
+*) Feature: the "real_ip_recursive", "geoip_proxy", and
+"geoip_proxy_recursive" directives.
+*) Feature: the "proxy_recursive" parameter of the "geo" directive.
+*) Bugfix: a segmentation fault might occur in a worker process if the
+"resolver" directive was used.
+*) Bugfix: a segmentation fault might occur in a worker process if the
+"fastcgi_pass", "scgi_pass", or "uwsgi_pass" directives were used and
+backend returned incorrect response.
+*) Bugfix: a segmentation fault might occur in a worker process if the
+"rewrite" directive was used and new request arguments in a
+replacement used variables.
+*) Bugfix: nginx might hog CPU if the open file resource limit was
+reached.
+*) Bugfix: nginx might loop infinitely over backends if the
+"proxy_next_upstream" directive with the "http_404" parameter was
+used and there were backup servers specified in an upstream block.
+*) Bugfix: adding the "down" parameter of the "server" directive might
+cause unneeded client redistribution among backend servers if the
+"ip_hash" directive was used.
+*) Bugfix: socket leak.
+Thanks to Yichun Zhang.
+*) Bugfix: in the ngx_http_fastcgi_module.
+Changes with nginx 1.2.0                                         23 Apr 2012
+*) Bugfix: a segmentation fault might occur in a worker process if the
+"try_files" directive was used; the bug had appeared in 1.1.19.
+*) Bugfix: response might be truncated if there were more than IOV_MAX
+buffers used.
+*) Bugfix: in the "crop" parameter of the "image_filter" directive.
+Thanks to Maxim Bublis.
+Changes with nginx 1.1.19                                        12 Apr 2012
+*) Security: specially crafted mp4 file might allow to overwrite memory
+locations in a worker process if the ngx_http_mp4_module was used,
+potentially resulting in arbitrary code execution (CVE-2012-2089).
+Thanks to Matthew Daley.
+*) Bugfix: nginx/Windows might be terminated abnormally.
+Thanks to Vincent Lee.
+*) Bugfix: nginx hogged CPU if all servers in an upstream were marked as
+"backup".
+*) Bugfix: the "allow" and "deny" directives might be inherited
+incorrectly if they were used with IPv6 addresses.
+*) Bugfix: the "modern_browser" and "ancient_browser" directives might
+be inherited incorrectly.
+*) Bugfix: timeouts might be handled incorrectly on Solaris/SPARC.
+*) Bugfix: in the ngx_http_mp4_module.
+Changes with nginx 1.1.18                                        28 Mar 2012
+*) Change: keepalive connections are no longer disabled for Safari by
+default.
+*) Feature: the $connection_requests variable.
+*) Feature: $tcpinfo_rtt, $tcpinfo_rttvar, $tcpinfo_snd_cwnd and
+$tcpinfo_rcv_space variables.
+*) Feature: the "worker_cpu_affinity" directive now works on FreeBSD.
+*) Feature: the "xslt_param" and "xslt_string_param" directives.
+Thanks to Samuel Behan.
+*) Bugfix: in configure tests.
+Thanks to Piotr Sikora.
+*) Bugfix: in the ngx_http_xslt_filter_module.
+*) Bugfix: nginx could not be built on Debian GNU/Hurd.
+Changes with nginx 1.1.17                                        15 Mar 2012
+*) Security: content of previously freed memory might be sent to a
+client if backend returned specially crafted response.
+Thanks to Matthew Daley.
+*) Bugfix: in the embedded perl module if used from SSI.
+Thanks to Matthew Daley.
+*) Bugfix: in the ngx_http_uwsgi_module.
+Changes with nginx 1.1.16                                        29 Feb 2012
+*) Change: the simultaneous subrequest limit has been raised to 200.
+*) Feature: the "from" parameter of the "disable_symlinks" directive.
+*) Feature: the "return" and "error_page" directives can now be used to
+return 307 redirections.
+*) Bugfix: a segmentation fault might occur in a worker process if the
+"resolver" directive was used and there was no "error_log" directive
+specified at global level.
+Thanks to Roman Arutyunyan.
+*) Bugfix: a segmentation fault might occur in a worker process if the
+"proxy_http_version 1.1" or "fastcgi_keep_conn on" directives were
+used.
+*) Bugfix: memory leaks.
+Thanks to Lanshun Zhou.
+*) Bugfix: in the "disable_symlinks" directive.
+*) Bugfix: on ZFS filesystem disk cache size might be calculated
+incorrectly; the bug had appeared in 1.0.1.
+*) Bugfix: nginx could not be built by the icc 12.1 compiler.
+*) Bugfix: nginx could not be built by gcc on Solaris; the bug had
+appeared in 1.1.15.
+Changes with nginx 1.1.15                                        15 Feb 2012
+*) Feature: the "disable_symlinks" directive.
+*) Feature: the "proxy_cookie_domain" and "proxy_cookie_path"
+directives.
+*) Bugfix: nginx might log incorrect error "upstream prematurely closed
+connection" instead of correct "upstream sent too big header" one.
+Thanks to Feibo Li.
+*) Bugfix: nginx could not be built with the ngx_http_perl_module if the
+--with-openssl option was used.
+*) Bugfix: the number of internal redirects to named locations was not
+limited.
+*) Bugfix: calling $r->flush() multiple times might cause errors in the
+ngx_http_gzip_filter_module.
+*) Bugfix: temporary files might be not removed if the "proxy_store"
+directive was used with SSI includes.
+*) Bugfix: in some cases non-cacheable variables (such as the $args
+variable) returned old empty cached value.
+*) Bugfix: a segmentation fault might occur in a worker process if too
+many SSI subrequests were issued simultaneously; the bug had appeared
+in 0.7.25.
+Changes with nginx 1.1.14                                        30 Jan 2012
+*) Feature: multiple "limit_req" limits may be used simultaneously.
+*) Bugfix: in error handling while connecting to a backend.
+Thanks to Piotr Sikora.
+*) Bugfix: in AIO error handling on FreeBSD.
+*) Bugfix: in the OpenSSL library initialization.
+*) Bugfix: the "proxy_redirect" directives might be inherited
+incorrectly.
+*) Bugfix: memory leak during reconfiguration if the "pcre_jit"
+directive was used.
+Changes with nginx 1.1.13                                        16 Jan 2012
+*) Feature: the "TLSv1.1" and "TLSv1.2" parameters of the
+"ssl_protocols" directive.
+*) Bugfix: the "limit_req" directive parameters were not inherited
+correctly; the bug had appeared in 1.1.12.
+*) Bugfix: the "proxy_redirect" directive incorrectly processed
+"Refresh" header if regular expression were used.
+*) Bugfix: the "proxy_cache_use_stale" directive with "error" parameter
+did not return answer from cache if there were no live upstreams.
+*) Bugfix: the "worker_cpu_affinity" directive might not work.
+*) Bugfix: nginx could not be built on Solaris; the bug had appeared in
+1.1.12.
+*) Bugfix: in the ngx_http_mp4_module.
+Changes with nginx 1.1.12                                        26 Dec 2011
+*) Change: a "proxy_pass" directive without URI part now uses changed
+URI after redirection with the "error_page" directive.
+Thanks to Lanshun Zhou.
+*) Feature: the "proxy/fastcgi/scgi/uwsgi_cache_lock",
+"proxy/fastcgi/scgi/uwsgi_cache_lock_timeout" directives.
+*) Feature: the "pcre_jit" directive.
+*) Feature: the "if" SSI command supports captures in regular
+expressions.
+*) Bugfix: the "if" SSI command did not work inside the "block" command.
+*) Bugfix: the "limit_conn_log_level" and "limit_req_log_level"
+directives might not work.
+*) Bugfix: the "limit_rate" directive did not allow to use full
+throughput, even if limit value was very high.
+*) Bugfix: the "sendfile_max_chunk" directive did not work, if the
+"limit_rate" directive was used.
+*) Bugfix: a "proxy_pass" directive without URI part always used
+original request URI if variables were used.
+*) Bugfix: a "proxy_pass" directive without URI part might use original
+request after redirection with the "try_files" directive.
+Thanks to Lanshun Zhou.
+*) Bugfix: in the ngx_http_scgi_module.
+*) Bugfix: in the ngx_http_mp4_module.
+*) Bugfix: nginx could not be built on Solaris; the bug had appeared in
+1.1.9.
+Changes with nginx 1.1.11                                        12 Dec 2011
+*) Feature: the "so_keepalive" parameter of the "listen" directive.
+Thanks to Vsevolod Stakhov.
+*) Feature: the "if_not_empty" parameter of the
+"fastcgi/scgi/uwsgi_param" directives.
+*) Feature: the $https variable.
+*) Feature: the "proxy_redirect" directive supports variables in the
+first parameter.
+*) Feature: the "proxy_redirect" directive supports regular expressions.
+*) Bugfix: the $sent_http_cache_control variable might contain a wrong
+value if the "expires" directive was used.
+Thanks to Yichun Zhang.
+*) Bugfix: the "read_ahead" directive might not work combined with
+"try_files" and "open_file_cache".
+*) Bugfix: a segmentation fault might occur in a worker process if small
+time was used in the "inactive" parameter of the "proxy_cache_path"
+directive.
+*) Bugfix: responses from cache might hang.
+Changes with nginx 1.1.10                                        30 Nov 2011
+*) Bugfix: a segmentation fault occurred in a worker process if AIO was
+used on Linux; the bug had appeared in 1.1.9.
+Changes with nginx 1.1.9                                         28 Nov 2011
+*) Change: now double quotes are encoded in an "echo" SSI-command
+output.
+Thanks to Zaur Abasmirzoev.
+*) Feature: the "valid" parameter of the "resolver" directive. By
+default TTL returned by a DNS server is used.
+Thanks to Kirill A. Korinskiy.
+*) Bugfix: nginx might hang after a worker process abnormal termination.
+*) Bugfix: a segmentation fault might occur in a worker process if SNI
+was used; the bug had appeared in 1.1.2.
+*) Bugfix: in the "keepalive_disable" directive; the bug had appeared in
+1.1.8.
+Thanks to Alexander Usov.
+*) Bugfix: SIGWINCH signal did not work after first binary upgrade; the
+bug had appeared in 1.1.1.
+*) Bugfix: backend responses with length not matching "Content-Length"
+header line are no longer cached.
+*) Bugfix: in the "scgi_param" directive, if complex parameters were
+used.
+*) Bugfix: in the "epoll" event method.
+Thanks to Yichun Zhang.
+*) Bugfix: in the ngx_http_flv_module.
+Thanks to Piotr Sikora.
+*) Bugfix: in the ngx_http_mp4_module.
+*) Bugfix: IPv6 addresses are now handled properly in a request line and
+in a "Host" request header line.
+*) Bugfix: "add_header" and "expires" directives did not work if a
+request was proxied and response status code was 206.
+*) Bugfix: nginx could not be built on FreeBSD 10.
+*) Bugfix: nginx could not be built on AIX.
+Changes with nginx 1.1.8                                         14 Nov 2011
+*) Change: the ngx_http_limit_zone_module was renamed to the
+ngx_http_limit_conn_module.
+*) Change: the "limit_zone" directive was superseded by the
+"limit_conn_zone" directive with a new syntax.
+*) Feature: support for multiple "limit_conn" limits on the same level.
+*) Feature: the "image_filter_sharpen" directive.
+*) Bugfix: a segmentation fault might occur in a worker process if
+resolver got a big DNS response.
+Thanks to Ben Hawkes.
+*) Bugfix: in cache key calculation if internal MD5 implementation was
+used; the bug had appeared in 1.0.4.
+*) Bugfix: the "If-Modified-Since", "If-Range", etc. client request
+header lines might be passed to backend while caching; or not passed
+without caching if caching was enabled in another part of the
+configuration.
+*) Bugfix: the module ngx_http_mp4_module sent incorrect
+"Content-Length" response header line if the "start" argument was
+used.
+Thanks to Piotr Sikora.
+Changes with nginx 1.1.7                                         31 Oct 2011
+*) Feature: support of several DNS servers in the "resolver" directive.
+Thanks to Kirill A. Korinskiy.
+*) Bugfix: a segmentation fault occurred on start or during
+reconfiguration if the "ssl" directive was used at http level and
+there was no "ssl_certificate" defined.
+*) Bugfix: reduced memory consumption while proxying big files if they
+were buffered to disk.
+*) Bugfix: a segmentation fault might occur in a worker process if
+"proxy_http_version 1.1" directive was used.
+*) Bugfix: in the "expires @time" directive.
+Changes with nginx 1.1.6                                         17 Oct 2011
+*) Change in internal API: now module context data are cleared while
+internal redirect to named location.
+Requested by Yichun Zhang.
+*) Change: if a server in an upstream failed, only one request will be
+sent to it after fail_timeout; the server will be considered alive if
+it will successfully respond to the request.
+*) Change: now the 0x7F-0xFF characters are escaped as \xXX in an
+access_log.
+*) Feature: "proxy/fastcgi/scgi/uwsgi_ignore_headers" directives support
+the following additional values: X-Accel-Limit-Rate,
+X-Accel-Buffering, X-Accel-Charset.
+*) Feature: decrease of memory consumption if SSL is used.
+*) Bugfix: some UTF-8 characters were processed incorrectly.
+Thanks to Alexey Kuts.
+*) Bugfix: the ngx_http_rewrite_module directives specified at "server"
+level were executed twice if no matching locations were defined.
+*) Bugfix: a socket leak might occurred if "aio sendfile" was used.
+*) Bugfix: connections with fast clients might be closed after
+send_timeout if file AIO was used.
+*) Bugfix: in the ngx_http_autoindex_module.
+*) Bugfix: the module ngx_http_mp4_module did not support seeking on
+32-bit platforms.
+Changes with nginx 1.1.5                                         05 Oct 2011
+*) Feature: the "uwsgi_buffering" and "scgi_buffering" directives.
+Thanks to Peter Smit.
+*) Bugfix: non-cacheable responses might be cached if
+"proxy_cache_bypass" directive was used.
+Thanks to John Ferlito.
+*) Bugfix: in HTTP/1.1 support in the ngx_http_proxy_module.
+*) Bugfix: cached responses with an empty body were returned
+incorrectly; the bug had appeared in 0.8.31.
+*) Bugfix: 201 responses of the ngx_http_dav_module were incorrect; the
+bug had appeared in 0.8.32.
+*) Bugfix: in the "return" directive.
+*) Bugfix: the "ssl_session_cache builtin" directive caused segmentation
+fault; the bug had appeared in 1.1.1.
+Changes with nginx 1.1.4                                         20 Sep 2011
+*) Feature: the ngx_http_upstream_keepalive module.
+*) Feature: the "proxy_http_version" directive.
+*) Feature: the "fastcgi_keep_conn" directive.
+*) Feature: the "worker_aio_requests" directive.
+*) Bugfix: if nginx was built --with-file-aio it could not be run on
+Linux kernel which did not support AIO.
+*) Bugfix: in Linux AIO error processing.
+Thanks to Hagai Avrahami.
+*) Bugfix: reduced memory consumption for long-lived requests.
+*) Bugfix: the module ngx_http_mp4_module did not support 64-bit MP4
+"co64" atom.
+Changes with nginx 1.1.3                                         14 Sep 2011
+*) Feature: the module ngx_http_mp4_module.
+*) Bugfix: in Linux AIO combined with open_file_cache.
+*) Bugfix: open_file_cache did not update file info on retest if file
+was not atomically changed.
+*) Bugfix: nginx could not be built on MacOSX 10.7.
+Changes with nginx 1.1.2                                         05 Sep 2011
+*) Change: now if total size of all ranges is greater than source
+response size, then nginx disables ranges and returns just the source
+response.
+*) Feature: the "max_ranges" directive.
+*) Bugfix: the "ssl_verify_client", "ssl_verify_depth", and
+"ssl_prefer_server_ciphers" directives might work incorrectly if SNI
+was used.
+*) Bugfix: in the "proxy/fastcgi/scgi/uwsgi_ignore_client_abort"
+directives.
+Changes with nginx 1.1.1                                         22 Aug 2011
+*) Change: now cache loader processes either as many files as specified
+by "loader_files" parameter or works no longer than time specified by
+the "loader_threshold" parameter during each iteration.
+*) Change: now SIGWINCH signal works only in daemon mode.
+*) Feature: now shared zones and caches use POSIX semaphores on Solaris.
+Thanks to Den Ivanov.
+*) Feature: accept filters are now supported on NetBSD.
+*) Bugfix: nginx could not be built on Linux 3.0.
+*) Bugfix: nginx did not use gzipping in some cases; the bug had
+appeared in 1.1.0.
+*) Bugfix: request body might be processed incorrectly if client used
+pipelining.
+*) Bugfix: in the "request_body_in_single_buf" directive.
+*) Bugfix: in "proxy_set_body" and "proxy_pass_request_body" directives
+if SSL connection to backend was used.
+*) Bugfix: nginx hogged CPU if all servers in an upstream were marked as
+"down".
+*) Bugfix: a segmentation fault might occur during reconfiguration if
+ssl_session_cache was defined but not used in previous configuration.
+*) Bugfix: a segmentation fault might occur in a worker process if many
+backup servers were used in an upstream.
+*) Bugfix: a segmentation fault might occur in a worker process if
+"fastcgi/scgi/uwsgi_param" directives were used with values starting
+with "HTTP_"; the bug had appeared in 0.8.40.
+Changes with nginx 1.1.0                                         01 Aug 2011
+*) Feature: cache loader run time decrease.
+*) Feature: "loader_files", "loader_sleep", and "loader_threshold"
+options of the "proxy/fastcgi/scgi/uwsgi_cache_path" directives.
+*) Feature: loading time decrease of configuration with large number of
+HTTPS sites.
+*) Feature: now nginx supports ECDHE key exchange ciphers.
+Thanks to Adrian Kotelba.
+*) Feature: the "lingering_close" directive.
+Thanks to Maxim Dounin.
+*) Bugfix: in closing connection for pipelined requests.
+Thanks to Maxim Dounin.
+*) Bugfix: nginx did not disable gzipping if client sent "gzip;q=0" in
+"Accept-Encoding" request header line.
+*) Bugfix: in timeout in unbuffered proxied mode.
+Thanks to Maxim Dounin.
+*) Bugfix: memory leaks when a "proxy_pass" directive contains variables
+and proxies to an HTTPS backend.
+Thanks to Maxim Dounin.
+*) Bugfix: in parameter validation of a "proxy_pass" directive with
+variables.
+Thanks to Lanshun Zhou.
+*) Bugfix: SSL did not work on QNX.
+Thanks to Maxim Dounin.
+*) Bugfix: SSL modules could not be built by gcc 4.6 without
+--with-debug option.
+Changes with nginx 1.0.5                                         19 Jul 2011
+*) Change: now default SSL ciphers are "HIGH:!aNULL:!MD5".
+Thanks to Rob Stradling.
+*) Feature: the "referer_hash_max_size" and "referer_hash_bucket_size"
+directives.
+Thanks to Witold Filipczyk.
+*) Feature: $uid_reset variable.
+*) Bugfix: a segmentation fault might occur in a worker process, if a
+caching was used.
+Thanks to Lanshun Zhou.
+*) Bugfix: worker processes may got caught in an endless loop during
+reconfiguration, if a caching was used; the bug had appeared in
+0.8.48.
+Thanks to Maxim Dounin.
+*) Bugfix: "stalled cache updating" alert.
+Thanks to Maxim Dounin.
+Changes with nginx 1.0.4                                         01 Jun 2011
+*) Change: now regular expressions case sensitivity in the "map"
+directive is given by prefixes "~" or "~*".
+*) Feature: now shared zones and caches use POSIX semaphores on Linux.
+Thanks to Denis F. Latypoff.
+*) Bugfix: "stalled cache updating" alert.
+*) Bugfix: nginx could not be built --without-http_auth_basic_module;
+the bug had appeared in 1.0.3.
+Changes with nginx 1.0.3                                         25 May 2011
+*) Feature: the "auth_basic_user_file" directive supports "$apr1",
+"{PLAIN}", and "{SSHA}" password encryption methods.
+Thanks to Maxim Dounin.
+*) Feature: the "geoip_org" directive and $geoip_org variable.
+Thanks to Alexander Uskov, Arnaud Granal, and Denis F. Latypoff.
+*) Feature: ngx_http_geo_module and ngx_http_geoip_module support IPv4
+addresses mapped to IPv6 addresses.
+*) Bugfix: a segmentation fault occurred in a worker process during
+testing IPv4 address mapped to IPv6 address, if access or deny rules
+were defined only for IPv6; the bug had appeared in 0.8.22.
+*) Bugfix: a cached response may be broken if "proxy/fastcgi/scgi/
+uwsgi_cache_bypass" and "proxy/fastcgi/scgi/uwsgi_no_cache" directive
+values were different; the bug had appeared in 0.8.46.
+Changes with nginx 1.0.2                                         10 May 2011
+*) Feature: now shared zones and caches use POSIX semaphores.
+*) Bugfix: in the "rotate" parameter of the "image_filter" directive.
+Thanks to Adam Bocim.
+*) Bugfix: nginx could not be built on Solaris; the bug had appeared in
+1.0.1.
+Changes with nginx 1.0.1                                         03 May 2011
+*) Change: now the "split_clients" directive uses MurmurHash2 algorithm
+because of better distribution.
+Thanks to Oleg Mamontov.
+*) Change: now long strings starting with zero are not considered as
+false values.
+Thanks to Maxim Dounin.
+*) Change: now nginx uses a default listen backlog value 511 on Linux.
+*) Feature: the $upstream_... variables may be used in the SSI and perl
+modules.
+*) Bugfix: now nginx limits better disk cache size.
+Thanks to Oleg Mamontov.
+*) Bugfix: a segmentation fault might occur while parsing incorrect IPv4
+address; the bug had appeared in 0.9.3.
+Thanks to Maxim Dounin.
+*) Bugfix: nginx could not be built by gcc 4.6 without --with-debug
+option.
+*) Bugfix: nginx could not be built on Solaris 9 and earlier; the bug
+had appeared in 0.9.3.
+Thanks to Dagobert Michelsen.
+*) Bugfix: $request_time variable had invalid values if subrequests were
+used; the bug had appeared in 0.8.47.
+Thanks to Igor A. Valcov.
+Changes with nginx 1.0.0                                         12 Apr 2011
+*) Bugfix: a cache manager might hog CPU after reload.
+Thanks to Maxim Dounin.
+*) Bugfix: an "image_filter crop" directive worked incorrectly coupled
+with an "image_filter rotate 180" directive.
+*) Bugfix: a "satisfy any" directive disabled custom 401 error page.
+Changes with nginx 0.9.7                                         04 Apr 2011
+*) Feature: now keepalive connections may be closed premature, if there
+are no free worker connections.
+Thanks to Maxim Dounin.
+*) Feature: the "rotate" parameter of the "image_filter" directive.
+Thanks to Adam Bocim.
+*) Bugfix: a case when a backend in "fastcgi_pass", "scgi_pass", or
+"uwsgi_pass" directives is given by expression and refers to a
+defined upstream.
+Changes with nginx 0.9.6                                         21 Mar 2011
+*) Feature: the "map" directive supports regular expressions as value of
+the first parameter.
+*) Feature: $time_iso8601 access_log variable.
+Thanks to Michael Lustfield.
+Changes with nginx 0.9.5                                         21 Feb 2011
+*) Change: now nginx uses a default listen backlog value -1 on Linux.
+Thanks to Andrei Nigmatulin.
+*) Feature: the "utf8" parameter of "geoip_country" and "geoip_city"
+directives.
+Thanks to Denis F. Latypoff.
+*) Bugfix: in a default "proxy_redirect" directive if "proxy_pass"
+directive has no URI part.
+Thanks to Maxim Dounin.
+*) Bugfix: an "error_page" directive did not work with nonstandard error
+codes; the bug had appeared in 0.8.53.
+Thanks to Maxim Dounin.
+Changes with nginx 0.9.4                                         21 Jan 2011
+*) Feature: the "server_name" directive supports the $hostname variable.
+*) Feature: 494 code for "Request Header Too Large" error.
+Changes with nginx 0.9.3                                         13 Dec 2010
+*) Bugfix: if there was a single server for given IPv6 address:port
+pair, then captures in regular expressions in a "server_name"
+directive did not work.
+*) Bugfix: nginx could not be built on Solaris; the bug had appeared in
+0.9.0.
+Changes with nginx 0.9.2                                         06 Dec 2010
+*) Feature: the "If-Unmodified-Since" client request header line
+support.
+*) Workaround: fallback to accept() syscall if accept4() was not
+implemented; the issue had appeared in 0.9.0.
+*) Bugfix: nginx could not be built on Cygwin; the bug had appeared in
+0.9.0.
+*) Bugfix: for OpenSSL vulnerability CVE-2010-4180.
+Thanks to Maxim Dounin.
+Changes with nginx 0.9.1                                         30 Nov 2010
+*) Bugfix: "return CODE message" directives did not work; the bug had
+appeared in 0.9.0.
+Changes with nginx 0.9.0                                         29 Nov 2010
+*) Feature: the "keepalive_disable" directive.
+*) Feature: the "map" directive supports variables as value of a defined
+variable.
+*) Feature: the "map" directive supports empty strings as value of the
+first parameter.
+*) Feature: the "map" directive supports expressions as the first
+parameter.
+*) Feature: nginx(8) manual page.
+Thanks to Sergey Osokin.
+*) Feature: Linux accept4() support.
+Thanks to Simon Liu.
+*) Workaround: elimination of Linux linker warning about "sys_errlist"
+and "sys_nerr"; the warning had appeared in 0.8.35.
+*) Bugfix: a segmentation fault might occur in a worker process, if the
+"auth_basic" directive was used.
+Thanks to Michail Laletin.
+*) Bugfix: compatibility with ngx_http_eval_module; the bug had appeared
+in 0.8.42.
+Changes with nginx 0.8.53                                        18 Oct 2010
+*) Feature: now the "error_page" directive allows to change a status
+code in a redirect.
+*) Feature: the "gzip_disable" directive supports special "degradation"
+mask.
+*) Bugfix: a socket leak might occurred if file AIO was used.
+Thanks to Maxim Dounin.
+*) Bugfix: if the first server had no "listen" directive and there was
+no explicit default server, then a next server with a "listen"
+directive became the default server; the bug had appeared in 0.8.21.
+Changes with nginx 0.8.52                                        28 Sep 2010
+*) Bugfix: nginx used SSL mode for a listen socket if any listen option
+was set; the bug had appeared in 0.8.51.
+Changes with nginx 0.8.51                                        27 Sep 2010
+*) Change: the "secure_link_expires" directive has been canceled.
+*) Change: a logging level of resolver errors has been lowered from
+"alert" to "error".
+*) Feature: now a listen socket "ssl" parameter may be set several
+times.
+Changes with nginx 0.8.50                                        02 Sep 2010
+*) Feature: the "secure_link", "secure_link_md5", and
+"secure_link_expires" directives of the ngx_http_secure_link_module.
+*) Feature: the -q switch.
+Thanks to Gena Makhomed.
+*) Bugfix: worker processes may got caught in an endless loop during
+reconfiguration, if a caching was used; the bug had appeared in
+0.8.48.
+*) Bugfix: in the "gzip_disable" directive.
+Thanks to Derrick Petzold.
+*) Bugfix: nginx/Windows could not send stop, quit, reopen, and reload
+signals to a process run in other session.
+Changes with nginx 0.8.49                                        09 Aug 2010
+*) Feature: the "image_filter_jpeg_quality" directive supports
+variables.
+*) Bugfix: a segmentation fault might occur in a worker process, if the
+$geoip_region_name variables was used; the bug had appeared in
+0.8.48.
+*) Bugfix: errors intercepted by error_page were cached only for next
+request; the bug had appeared in 0.8.48.
+Changes with nginx 0.8.48                                        03 Aug 2010
+*) Change: now the "server_name" directive default value is an empty
+name "".
+Thanks to Gena Makhomed.
+*) Change: now the "server_name_in_redirect" directive default value is
+"off".
+*) Feature: the $geoip_dma_code, $geoip_area_code, and
+$geoip_region_name variables.
+Thanks to Christine McGonagle.
+*) Bugfix: the "proxy_pass", "fastcgi_pass", "uwsgi_pass", and
+"scgi_pass" directives were not inherited inside "limit_except"
+blocks.
+*) Bugfix: the "proxy_cache_min_uses", "fastcgi_cache_min_uses"
+"uwsgi_cache_min_uses", and "scgi_cache_min_uses" directives did not
+work; the bug had appeared in 0.8.46.
+*) Bugfix: the "fastcgi_split_path_info" directive used incorrectly
+captures, if only parts of an URI were captured.
+Thanks to Yuriy Taraday and Frank Enderle.
+*) Bugfix: the "rewrite" directive did not escape a ";" character during
+copying from URI to query string.
+Thanks to Daisuke Murase.
+*) Bugfix: the ngx_http_image_filter_module closed a connection, if an
+image was larger than "image_filter_buffer" size.
+Changes with nginx 0.8.47                                        28 Jul 2010
+*) Bugfix: $request_time variable had invalid values for subrequests.
+*) Bugfix: errors intercepted by error_page could not be cached.
+*) Bugfix: a cache manager process may got caught in an endless loop, if
+max_size parameter was used; the bug had appeared in 0.8.46.
+Changes with nginx 0.8.46                                        19 Jul 2010
+*) Change: now the "proxy_no_cache", "fastcgi_no_cache",
+"uwsgi_no_cache", and "scgi_no_cache" directives affect on a cached
+response saving only.
+*) Feature: the "proxy_cache_bypass", "fastcgi_cache_bypass",
+"uwsgi_cache_bypass", and "scgi_cache_bypass" directives.
+*) Bugfix: nginx did not free memory in cache keys zones if there was an
+error during working with backend: the memory was freed only after
+inactivity time or on memory low condition.
+Changes with nginx 0.8.45                                        13 Jul 2010
+*) Feature: ngx_http_xslt_filter improvements.
+Thanks to Laurence Rowe.
+*) Bugfix: SSI response might be truncated after include with
+wait="yes"; the bug had appeared in 0.7.25.
+Thanks to Maxim Dounin.
+*) Bugfix: the "listen" directive did not support the "setfib=0"
+parameter.
+Changes with nginx 0.8.44                                        05 Jul 2010
+*) Change: now nginx does not cache by default backend responses, if
+they have a "Set-Cookie" header line.
+*) Feature: the "listen" directive supports the "setfib" parameter.
+Thanks to Andrew Filonov.
+*) Bugfix: the "sub_filter" directive might change character case on
+partial match.
+*) Bugfix: compatibility with HP/UX.
+*) Bugfix: compatibility with AIX xlC_r compiler.
+*) Bugfix: nginx treated large SSLv2 packets as plain requests.
+Thanks to Miroslaw Jaworski.
+Changes with nginx 0.8.43                                        30 Jun 2010
+*) Feature: large geo ranges base loading speed-up.
+*) Bugfix: an error_page redirection to "location /zero {return 204;}"
+without changing status code kept the error body; the bug had
+appeared in 0.8.42.
+*) Bugfix: nginx might close IPv6 listen socket during reconfiguration.
+Thanks to Maxim Dounin.
+*) Bugfix: the $uid_set variable may be used at any request processing
+stage.
+Changes with nginx 0.8.42                                        21 Jun 2010
+*) Change: now nginx tests locations given by regular expressions, if
+request was matched exactly by a location given by a prefix string.
+The previous behavior has been introduced in 0.7.1.
+*) Feature: the ngx_http_scgi_module.
+Thanks to Manlio Perillo.
+*) Feature: a text answer may be added to a "return" directive.
+Changes with nginx 0.8.41                                        15 Jun 2010
+*) Security: nginx/Windows worker might be terminated abnormally if a
+requested file name has invalid UTF-8 encoding.
+*) Change: now nginx allows to use spaces in a request line.
+*) Bugfix: the "proxy_redirect" directive changed incorrectly a backend
+"Refresh" response header line.
+Thanks to Andrey Andreew and Max Sogin.
+*) Bugfix: nginx did not support path without host name in "Destination"
+request header line.
+Changes with nginx 0.8.40                                        07 Jun 2010
+*) Security: now nginx/Windows ignores default file stream name.
+Thanks to Jose Antonio Vazquez Gonzalez.
+*) Feature: the ngx_http_uwsgi_module.
+Thanks to Roberto De Ioris.
+*) Feature: a "fastcgi_param" directive with value starting with "HTTP_"
+overrides a client request header line.
+*) Bugfix: the "If-Modified-Since", "If-Range", etc. client request
+header lines were passed to FastCGI-server while caching.
+*) Bugfix: listen unix domain socket could not be changed during
+reconfiguration.
+Thanks to Maxim Dounin.
+Changes with nginx 0.8.39                                        31 May 2010
+*) Bugfix: an inherited "alias" directive worked incorrectly in
+inclusive location.
+*) Bugfix: in "alias" with variables and "try_files" directives
+combination.
+*) Bugfix: listen unix domain and IPv6 sockets did not inherit while
+online upgrade.
+Thanks to Maxim Dounin.
+Changes with nginx 0.8.38                                        24 May 2010
+*) Feature: the "proxy_no_cache" and "fastcgi_no_cache" directives.
+*) Feature: now the "rewrite" directive does a redirect automatically if
+the $scheme variable is used.
+Thanks to Piotr Sikora.
+*) Bugfix: now "limit_req" delay directive conforms to the described
+algorithm.
+Thanks to Maxim Dounin.
+*) Bugfix: the $uid_got variable might not be used in the SSI and perl
+modules.
+Changes with nginx 0.8.37                                        17 May 2010
+*) Feature: the ngx_http_split_clients_module.
+*) Feature: the "map" directive supports keys more than 255 characters.
+*) Bugfix: nginx ignored the "private" and "no-store" values in the
+"Cache-Control" backend response header line.
+*) Bugfix: a "stub" parameter of an "include" SSI directive was not
+used, if empty response has 200 status code.
+*) Bugfix: if a proxied or FastCGI request was internally redirected to
+another proxied or FastCGI location, then a segmentation fault might
+occur in a worker process; the bug had appeared in 0.8.33.
+Thanks to Yichun Zhang.
+*) Bugfix: IMAP connections may hang until they timed out while talking
+to Zimbra server.
+Thanks to Alan Batie.
+Changes with nginx 0.8.36                                        22 Apr 2010
+*) Bugfix: the ngx_http_dav_module handled incorrectly the DELETE, COPY,
+and MOVE methods for symlinks.
+*) Bugfix: values of the $query_string, $arg_..., etc. variables cached
+in main request were used by the SSI module in subrequests.
+*) Bugfix: a variable value was repeatedly encoded after each an "echo"
+SSI-command output; the bug had appeared in 0.6.14.
+*) Bugfix: a worker process hung if a FIFO file was requested.
+Thanks to Vicente Aguilar and Maxim Dounin.
+*) Bugfix: OpenSSL-1.0.0 compatibility on 64-bit Linux.
+Thanks to Maxim Dounin.
+*) Bugfix: nginx could not be built --without-http-cache; the bug had
+appeared in 0.8.35.
+Changes with nginx 0.8.35                                        01 Apr 2010
+*) Change: now the charset filter runs before the SSI filter.
+*) Feature: the "chunked_transfer_encoding" directive.
+*) Bugfix: an "&" character was not escaped when it was copied in
+arguments part in a rewrite rule.
+*) Bugfix: nginx might be terminated abnormally while a signal
+processing or if the directive "timer_resolution" was used on
+platforms which do not support kqueue or eventport notification
+methods.
+Thanks to George Xie and Maxim Dounin.
+*) Bugfix: if temporary files and permanent storage area resided at
+different file systems, then permanent file modification times were
+incorrect.
+Thanks to Maxim Dounin.
+*) Bugfix: ngx_http_memcached_module might issue the error message
+"memcached sent invalid trailer".
+Thanks to Maxim Dounin.
+*) Bugfix: nginx could not built zlib-1.2.4 library using the library
+sources.
+Thanks to Maxim Dounin.
+*) Bugfix: a segmentation fault occurred in a worker process, if there
+was large stderr output before FastCGI response; the bug had appeared
+in 0.8.34.
+Thanks to Maxim Dounin.
+Changes with nginx 0.8.34                                        03 Mar 2010
+*) Bugfix: nginx did not support all ciphers and digests used in client
+certificates.
+Thanks to Innocenty Enikeew.
+*) Bugfix: nginx cached incorrectly FastCGI responses if there was large
+stderr output before response.
+*) Bugfix: nginx did not support HTTPS referrers.
+*) Bugfix: nginx/Windows might not find file if path in configuration
+was given in other character case; the bug had appeared in 0.8.33.
+*) Bugfix: the $date_local variable has an incorrect value, if the "%s"
+format was used.
+Thanks to Maxim Dounin.
+*) Bugfix: if ssl_session_cache was not set or was set to "none", then
+during client certificate verify the error "session id context
+uninitialized" might occur; the bug had appeared in 0.7.1.
+*) Bugfix: a geo range returned default value if the range included two
+or more /16 networks and did not begin at /16 network boundary.
+*) Bugfix: a block used in a "stub" parameter of an "include" SSI
+directive was output with "text/plain" MIME type.
+*) Bugfix: $r->sleep() did not work; the bug had appeared in 0.8.11.
+Changes with nginx 0.8.33                                        01 Feb 2010
+*) Security: now nginx/Windows ignores trailing spaces in URI.
+Thanks to Dan Crowley, Core Security Technologies.
+*) Security: now nginx/Windows ignores short files names.
+Thanks to Dan Crowley, Core Security Technologies.
+*) Change: now keepalive connections after POST requests are not
+disabled for MSIE 7.0+.
+Thanks to Adam Lounds.
+*) Workaround: now keepalive connections are disabled for Safari.
+Thanks to Joshua Sierles.
+*) Bugfix: if a proxied or FastCGI request was internally redirected to
+another proxied or FastCGI location, then $upstream_response_time
+variable may have abnormally large value; the bug had appeared in
+0.8.7.
+*) Bugfix: a segmentation fault might occur in a worker process, while
+discarding a request body; the bug had appeared in 0.8.11.
+Changes with nginx 0.8.32                                        11 Jan 2010
+*) Bugfix: UTF-8 encoding usage in the ngx_http_autoindex_module.
+Thanks to Maxim Dounin.
+*) Bugfix: regular expression named captures worked for two names only.
+Thanks to Maxim Dounin.
+*) Bugfix: now the "localhost" name is used in the "Host" request header
+line, if an unix domain socket is defined in the "auth_http"
+directive.
+Thanks to Maxim Dounin.
+*) Bugfix: nginx did not support chunked transfer encoding for 201
+responses.
+Thanks to Julian Reich.
+*) Bugfix: if the "expires modified" set date in the past, then a
+negative number was set in the "Cache-Control" response header line.
+Thanks to Alex Kapranoff.
+Changes with nginx 0.8.31                                        23 Dec 2009
+*) Feature: now the "error_page" directive may redirect the 301 and 302
+responses.
+*) Feature: the $geoip_city_continent_code, $geoip_latitude, and
+$geoip_longitude variables.
+Thanks to Arvind Sundararajan.
+*) Feature: now the ngx_http_image_filter_module deletes always EXIF and
+other application specific data if the data consume more than 5% of a
+JPEG file.
+*) Bugfix: nginx closed a connection if a cached response had an empty
+body.
+Thanks to Piotr Sikora.
+*) Bugfix: nginx might not be built by gcc 4.x if the -O2 or higher
+optimization option was used.
+Thanks to Maxim Dounin and Denis F. Latypoff.
+*) Bugfix: regular expressions in location were always tested in
+case-sensitive mode; the bug had appeared in 0.8.25.
+*) Bugfix: nginx cached a 304 response if there was the "If-None-Match"
+header line in a proxied request.
+Thanks to Tim Dettrick and David Kostal.
+*) Bugfix: nginx/Windows tried to delete a temporary file twice if the
+file should replace an already existent file.
+Changes with nginx 0.8.30                                        15 Dec 2009
+*) Change: now the default buffer size of the
+"large_client_header_buffers" directive is 8K.
+Thanks to Andrew Cholakian.
+*) Feature: the conf/fastcgi.conf for simple FastCGI configurations.
+*) Bugfix: nginx/Windows tried to rename a temporary file twice if the
+file should replace an already existent file.
+*) Bugfix: of "double free or corruption" error issued if host could not
+be resolved; the bug had appeared in 0.8.22.
+Thanks to Konstantin Svist.
+*) Bugfix: in libatomic usage on some platforms.
+Thanks to W-Mark Kubacki.
+Changes with nginx 0.8.29                                        30 Nov 2009
+*) Change: now the "009" status code is written to an access log for
+proxied HTTP/0.9 responses.
+*) Feature: the "addition_types", "charset_types", "gzip_types",
+"ssi_types", "sub_filter_types", and "xslt_types" directives support
+an "*" parameter.
+*) Feature: GCC 4.1+ built-in atomic operations usage.
+Thanks to W-Mark Kubacki.
+*) Feature: the --with-libatomic[=DIR] option in the configure.
+Thanks to W-Mark Kubacki.
+*) Bugfix: listen unix domain socket had limited access rights.
+*) Bugfix: cached HTTP/0.9 responses were handled incorrectly.
+*) Bugfix: regular expression named captures given by "?P<...>" did not
+work in a "server_name" directive.
+Thanks to Maxim Dounin.
+Changes with nginx 0.8.28                                        23 Nov 2009
+*) Bugfix: nginx could not be built with the --without-pcre parameter;
+the bug had appeared in 0.8.25.
+Changes with nginx 0.8.27                                        17 Nov 2009
+*) Bugfix: regular expressions did not work in nginx/Windows; the bug
+had appeared in 0.8.25.
+Changes with nginx 0.8.26                                        16 Nov 2009
+*) Bugfix: in captures usage in "rewrite" directive; the bug had
+appeared in 0.8.25.
+*) Bugfix: nginx could not be built without the --with-debug option; the
+bug had appeared in 0.8.25.
+Changes with nginx 0.8.25                                        16 Nov 2009
+*) Change: now no message is written in an error log if a variable is
+not found by $r->variable() method.
+*) Feature: the ngx_http_degradation_module.
+*) Feature: regular expression named captures.
+*) Feature: now URI part is not required a "proxy_pass" directive if
+variables are used.
+*) Feature: now the "msie_padding" directive works for Chrome too.
+*) Bugfix: a segmentation fault occurred in a worker process on low
+memory condition; the bug had appeared in 0.8.18.
+*) Bugfix: nginx sent gzipped responses to clients those do not support
+gzip, if "gzip_static on" and "gzip_vary off"; the bug had appeared
+in 0.8.16.
+Changes with nginx 0.8.24                                        11 Nov 2009
+*) Bugfix: nginx always added "Content-Encoding: gzip" response header
+line in 304 responses sent by ngx_http_gzip_static_module.
+*) Bugfix: nginx could not be built without the --with-debug option; the
+bug had appeared in 0.8.23.
+*) Bugfix: the "unix:" parameter of the "set_real_ip_from" directive
+inherited incorrectly from previous level.
+*) Bugfix: in resolving empty name.
+Changes with nginx 0.8.23                                        11 Nov 2009
+*) Security: now SSL/TLS renegotiation is disabled.
+Thanks to Maxim Dounin.
+*) Bugfix: listen unix domain socket did not inherit while online
+upgrade.
+*) Bugfix: the "unix:" parameter of the "set_real_ip_from" directive did
+not without yet another directive with any IP address.
+*) Bugfix: segmentation fault and infinite looping in resolver.
+*) Bugfix: in resolver.
+Thanks to Artem Bokhan.
+Changes with nginx 0.8.22                                        03 Nov 2009
+*) Feature: the "proxy_bind", "fastcgi_bind", and "memcached_bind"
+directives.
+*) Feature: the "access" and the "deny" directives support IPv6.
+*) Feature: the "set_real_ip_from" directive supports IPv6 addresses in
+request headers.
+*) Feature: the "unix:" parameter of the "set_real_ip_from" directive.
+*) Bugfix: nginx did not delete unix domain socket after configuration
+testing.
+*) Bugfix: nginx deleted unix domain socket while online upgrade.
+*) Bugfix: the "!-x" operator did not work.
+Thanks to Maxim Dounin.
+*) Bugfix: a segmentation fault might occur in a worker process, if
+limit_rate was used in HTTPS server.
+Thanks to Maxim Dounin.
+*) Bugfix: a segmentation fault might occur in a worker process while
+$limit_rate logging.
+Thanks to Maxim Dounin.
+*) Bugfix: a segmentation fault might occur in a worker process, if
+there was no "listen" directive in "server" block; the bug had
+appeared in 0.8.21.
+Changes with nginx 0.8.21                                        26 Oct 2009
+*) Feature: now the "-V" switch shows TLS SNI support.
+*) Feature: the "listen" directive of the HTTP module supports unix
+domain sockets.
+Thanks to Hongli Lai.
+*) Feature: the "default_server" parameter of the "listen" directive.
+*) Feature: now a "default" parameter is not required to set listen
+socket options.
+*) Bugfix: nginx did not support dates in 2038 year on 32-bit platforms;
+*) Bugfix: socket leak; the bug had appeared in 0.8.11.
+Changes with nginx 0.8.20                                        14 Oct 2009
+*) Change: now default SSL ciphers are "HIGH:!ADH:!MD5".
+*) Bugfix: the ngx_http_autoindex_module did not show the trailing slash
+in links to a directory; the bug had appeared in 0.7.15.
+*) Bugfix: nginx did not close a log file set by the --error-log-path
+configuration option; the bug had appeared in 0.7.53.
+*) Bugfix: nginx did not treat a comma as separator in the
+"Cache-Control" backend response header line.
+*) Bugfix: nginx/Windows might not create temporary file, a cache file,
+or "proxy/fastcgi_store"d file if a worker had no enough access
+rights for top level directories.
+*) Bugfix: the "Set-Cookie" and "P3P" FastCGI response header lines were
+not hidden while caching if no "fastcgi_hide_header" directives were
+used with any parameters.
+*) Bugfix: nginx counted incorrectly disk cache size.
+Changes with nginx 0.8.19                                        06 Oct 2009
+*) Change: now SSLv2 protocol is disabled by default.
+*) Change: now default SSL ciphers are "ALL:!ADH:RC4+RSA:+HIGH:+MEDIUM".
+*) Bugfix: a "limit_req" directive did not work; the bug had appeared in
+0.8.18.
+Changes with nginx 0.8.18                                        06 Oct 2009
+*) Feature: the "read_ahead" directive.
+*) Feature: now several "perl_modules" directives may be used.
+*) Feature: the "limit_req_log_level" and "limit_conn_log_level"
+directives.
+*) Bugfix: now "limit_req" directive conforms to the leaky bucket
+algorithm.
+Thanks to Maxim Dounin.
+*) Bugfix: nginx did not work on Linux/sparc.
+Thanks to Marcus Ramberg.
+*) Bugfix: nginx sent '\0' in a "Location" response header line on MKCOL
+request.
+Thanks to Xie Zhenye.
+*) Bugfix: zero status code was logged instead of 499 status code; the
+bug had appeared in 0.8.11.
+*) Bugfix: socket leak; the bug had appeared in 0.8.11.
+Changes with nginx 0.8.17                                        28 Sep 2009
+*) Security: now "/../" are disabled in "Destination" request header
+line.
+*) Change: now $host variable value is always low case.
+*) Feature: the $ssl_session_id variable.
+*) Bugfix: socket leak; the bug had appeared in 0.8.11.
+Changes with nginx 0.8.16                                        22 Sep 2009
+*) Feature: the "image_filter_transparency" directive.
+*) Bugfix: "addition_types" directive was incorrectly named
+"addtion_types".
+*) Bugfix: resolver cache poisoning.
+Thanks to Matthew Dempsky.
+*) Bugfix: memory leak in resolver.
+Thanks to Matthew Dempsky.
+*) Bugfix: invalid request line in $request variable was written in
+access_log only if error_log was set to "info" or "debug" level.
+*) Bugfix: in PNG alpha-channel support in the
+ngx_http_image_filter_module.
+*) Bugfix: nginx always added "Vary: Accept-Encoding" response header
+line, if both "gzip_static" and "gzip_vary" were on.
+*) Bugfix: in UTF-8 encoding support by "try_files" directive in
+nginx/Windows.
+*) Bugfix: in "post_action" directive usage; the bug had appeared in
+0.8.11.
+Thanks to Igor Artemiev.
+Changes with nginx 0.8.15                                        14 Sep 2009
+*) Security: a segmentation fault might occur in worker process while
+specially crafted request handling.
+Thanks to Chris Ries.
+*) Bugfix: if names .domain.tld, .sub.domain.tld, and .domain-some.tld
+were defined, then the name .sub.domain.tld was matched by
+.domain.tld.
+*) Bugfix: in transparency support in the ngx_http_image_filter_module.
+*) Bugfix: in file AIO.
+*) Bugfix: in X-Accel-Redirect usage; the bug had appeared in 0.8.11.
+*) Bugfix: in embedded perl module; the bug had appeared in 0.8.11.
+Changes with nginx 0.8.14                                        07 Sep 2009
+*) Bugfix: an expired cached response might stick in the "UPDATING"
+state.
+*) Bugfix: a segmentation fault might occur in worker process, if
+error_log was set to info or debug level.
+Thanks to Sergey Bochenkov.
+*) Bugfix: in embedded perl module; the bug had appeared in 0.8.11.
+*) Bugfix: an "error_page" directive did not redirect a 413 error; the
+bug had appeared in 0.6.10.
+Changes with nginx 0.8.13                                        31 Aug 2009
+*) Bugfix: in the "aio sendfile" directive; the bug had appeared in
+0.8.12.
+*) Bugfix: nginx could not be built without the --with-file-aio option
+on FreeBSD; the bug had appeared in 0.8.12.
+Changes with nginx 0.8.12                                        31 Aug 2009
+*) Feature: the "sendfile" parameter in the "aio" directive on FreeBSD.
+*) Bugfix: in try_files; the bug had appeared in 0.8.11.
+*) Bugfix: in memcached; the bug had appeared in 0.8.11.
+Changes with nginx 0.8.11                                        28 Aug 2009
+*) Change: now directive "gzip_disable msie6" does not disable gzipping
+for MSIE 6.0 SV1.
+*) Feature: file AIO support on FreeBSD and Linux.
+*) Feature: the "directio_alignment" directive.
+Changes with nginx 0.8.10                                        24 Aug 2009
+*) Bugfix: memory leaks if GeoIP City database was used.
+*) Bugfix: in copying temporary files to permanent storage area; the bug
+had appeared in 0.8.9.
+Changes with nginx 0.8.9                                         17 Aug 2009
+*) Feature: now the start cache loader runs in a separate process; this
+should improve large caches handling.
+*) Feature: now temporary files and permanent storage area may reside at
+different file systems.
+Changes with nginx 0.8.8                                         10 Aug 2009
+*) Bugfix: in handling FastCGI headers split in records.
+*) Bugfix: a segmentation fault occurred in worker process, if a request
+was handled in two proxied or FastCGIed locations and a caching was
+enabled in the first location; the bug had appeared in 0.8.7.
+Changes with nginx 0.8.7                                         27 Jul 2009
+*) Change: minimum supported OpenSSL version is 0.9.7.
+*) Change: the "ask" parameter of the "ssl_verify_client" directive was
+changed to the "optional" parameter and now it checks a client
+certificate if it was offered.
+Thanks to Brice Figureau.
+*) Feature: the $ssl_client_verify variable.
+Thanks to Brice Figureau.
+*) Feature: the "ssl_crl" directive.
+Thanks to Brice Figureau.
+*) Feature: the "proxy" parameter of the "geo" directive.
+*) Feature: the "image_filter" directive supports variables for setting
+size.
+*) Bugfix: the $ssl_client_cert variable usage corrupted memory; the bug
+had appeared in 0.7.7.
+Thanks to Sergey Zhuravlev.
+*) Bugfix: "proxy_pass_header" and "fastcgi_pass_header" directives did
+not pass to a client the "X-Accel-Redirect", "X-Accel-Limit-Rate",
+"X-Accel-Buffering", and "X-Accel-Charset" lines from backend
+response header.
+Thanks to Maxim Dounin.
+*) Bugfix: in handling "Last-Modified" and "Accept-Ranges" backend
+response header lines; the bug had appeared in 0.7.44.
+Thanks to Maxim Dounin.
+*) Bugfix: the "[alert] zero size buf" error if subrequest returns an
+empty response; the bug had appeared in 0.8.5.
+Changes with nginx 0.8.6                                         20 Jul 2009
+*) Feature: the ngx_http_geoip_module.
+*) Bugfix: XSLT filter may fail with message "not well formed XML
+document" for valid XML document.
+Thanks to Kuramoto Eiji.
+*) Bugfix: now in MacOSX, Cygwin, and nginx/Windows locations given by a
+regular expression are always tested in case insensitive mode.
+*) Bugfix: now nginx/Windows ignores trailing dots in URI.
+Thanks to Hugo Leisink.
+*) Bugfix: name of file specified in --conf-path was not honored during
+installation; the bug had appeared in 0.6.6.
+Thanks to Maxim Dounin.
+Changes with nginx 0.8.5                                         13 Jul 2009
+*) Bugfix: now nginx allows underscores in a request method.
+*) Bugfix: a 500 error code was returned for invalid login/password
+while HTTP Basic authentication on Windows.
+*) Bugfix: ngx_http_perl_module responses did not work in subrequests.
+*) Bugfix: in ngx_http_limit_req_module.
+Thanks to Maxim Dounin.
+Changes with nginx 0.8.4                                         22 Jun 2009
+*) Bugfix: nginx could not be built --without-http-cache; the bug had
+appeared in 0.8.3.
+Changes with nginx 0.8.3                                         19 Jun 2009
+*) Feature: the $upstream_cache_status variable.
+*) Bugfix: nginx could not be built on MacOSX 10.6.
+*) Bugfix: nginx could not be built --without-http-cache; the bug had
+appeared in 0.8.2.
+*) Bugfix: a segmentation fault occurred in worker process, if a backend
+401 error was intercepted and the backend did not set the
+"WWW-Authenticate" response header line.
+Thanks to Eugene Mychlo.
+Changes with nginx 0.8.2                                         15 Jun 2009
+*) Bugfix: in open_file_cache and proxy/fastcgi cache interaction on
+start up.
+*) Bugfix: open_file_cache might cache open file descriptors too long;
+the bug had appeared in 0.7.4.
+Changes with nginx 0.8.1                                         08 Jun 2009
+*) Feature: the "updating" parameter in "proxy_cache_use_stale" and
+"fastcgi_cache_use_stale" directives.
+*) Bugfix: the "If-Modified-Since", "If-Range", etc. client request
+header lines were passed to backend while caching if no
+"proxy_set_header" directive was used with any parameters.
+*) Bugfix: the "Set-Cookie" and "P3P" response header lines were not
+hidden while caching if no "proxy_hide_header/fastcgi_hide_header"
+directives were used with any parameters.
+*) Bugfix: the ngx_http_image_filter_module did not support GIF87a
+format.
+Thanks to Denis Ilyinyh.
+*) Bugfix: nginx could not be built modules on Solaris 10 and early; the
+bug had appeared in 0.7.56.
+Changes with nginx 0.8.0                                         02 Jun 2009
+*) Feature: the "keepalive_requests" directive.
+*) Feature: the "limit_rate_after" directive.
+Thanks to Ivan Debnar.
+*) Bugfix: XLST filter did not work in subrequests.
+*) Bugfix: in relative paths handling in nginx/Windows.
+*) Bugfix: in proxy_store, fastcgi_store, proxy_cache, and fastcgi_cache
+in nginx/Windows.
+*) Bugfix: in memory allocation error handling.
+Thanks to Maxim Dounin and Kirill A. Korinskiy.
+Changes with nginx 0.7.59                                        25 May 2009
+*) Feature: the "proxy_cache_methods" and "fastcgi_cache_methods"
+directives.
+*) Bugfix: socket leak; the bug had appeared in 0.7.25.
+Thanks to Maxim Dounin.
+*) Bugfix: a segmentation fault occurred in worker process, if a request
+had no body and the $request_body variable was used;
+the bug had appeared in 0.7.58.
+*) Bugfix: the SSL modules might not built on Solaris and Linux;
+the bug had appeared in 0.7.56.
+*) Bugfix: ngx_http_xslt_filter_module responses were not handled by
+SSI, charset, and gzip filters.
+*) Bugfix: a "charset" directive did not set a charset to
+ngx_http_gzip_static_module responses.
+Changes with nginx 0.7.58                                        18 May 2009
+*) Feature: a "listen" directive of the mail proxy module supports IPv6.
+*) Feature: the "image_filter_jpeg_quality" directive.
+*) Feature: the "client_body_in_single_buffer" directive.
+*) Feature: the $request_body variable.
+*) Bugfix: in ngx_http_autoindex_module in file name links having a ":"
+symbol in the name.
+*) Bugfix: "make upgrade" procedure did not work; the bug had appeared
+in 0.7.53.
+Thanks to Denis F. Latypoff.
+Changes with nginx 0.7.57                                        12 May 2009
+*) Bugfix: a floating-point fault occurred in worker process, if the
+ngx_http_image_filter_module errors were redirected to named
+location; the bug had appeared in 0.7.56.
+Changes with nginx 0.7.56                                        11 May 2009
+*) Feature: nginx/Windows supports IPv6 in a "listen" directive of the
+HTTP module.
+*) Bugfix: in ngx_http_image_filter_module.
+Changes with nginx 0.7.55                                        06 May 2009
+*) Bugfix: the http_XXX parameters in "proxy_cache_use_stale" and
+"fastcgi_cache_use_stale" directives did not work.
+*) Bugfix: fastcgi cache did not cache header only responses.
+*) Bugfix: of "select() failed (9: Bad file descriptor)" error in
+nginx/Unix and "select() failed (10038: ...)" error in nginx/Windows.
+*) Bugfix: a segmentation fault might occur in worker process, if an
+"debug_connection" directive was used; the bug had appeared in
+0.7.54.
+*) Bugfix: fix ngx_http_image_filter_module building errors.
+*) Bugfix: the files bigger than 2G could not be transferred using
+$r->sendfile.
+Thanks to Maxim Dounin.
+Changes with nginx 0.7.54                                        01 May 2009
+*) Feature: the ngx_http_image_filter_module.
+*) Feature: the "proxy_ignore_headers" and "fastcgi_ignore_headers"
+directives.
+*) Bugfix: a segmentation fault might occur in worker process, if an
+"open_file_cache_errors off" directive was used; the bug had appeared
+in 0.7.53.
+*) Bugfix: the "port_in_redirect off" directive did not work; the bug
+had appeared in 0.7.39.
+*) Bugfix: improve handling of "select" method errors.
+*) Bugfix: of "select() failed (10022: ...)" error in nginx/Windows.
+*) Bugfix: in error text descriptions in nginx/Windows; the bug had
+appeared in 0.7.53.
+Changes with nginx 0.7.53                                        27 Apr 2009
+*) Change: now a log set by --error-log-path is created from the very
+start-up.
+*) Feature: now the start up errors and warnings are outputted to an
+error_log and stderr.
+*) Feature: the empty --prefix= configure parameter forces nginx to use
+a directory where it was run as prefix.
+*) Feature: the -p switch.
+*) Feature: the -s switch on Unix platforms.
+*) Feature: the -? and -h switches.
+Thanks to Jerome Loyet.
+*) Feature: now switches may be set in condensed form.
+*) Bugfix: nginx/Windows did not work if configuration file was given by
+the -c switch.
+*) Bugfix: temporary files might be not removed if the "proxy_store",
+"fastcgi_store", "proxy_cache", or "fastcgi_cache" were used.
+Thanks to Maxim Dounin.
+*) Bugfix: an incorrect value was passed to mail proxy authentication
+server in "Auth-Method" header line; the bug had appeared
+in 0.7.34.
+Thanks to Simon Lecaille.
+*) Bugfix: system error text descriptions were not logged on Linux;
+the bug had appeared in 0.7.45.
+*) Bugfix: the "fastcgi_cache_min_uses" directive did not work.
+Thanks to Andrew Vorobyoff.
+Changes with nginx 0.7.52                                        20 Apr 2009
+*) Feature: the first native Windows binary release.
+*) Bugfix: in processing HEAD method while caching.
+*) Bugfix: in processing the "If-Modified-Since", "If-Range", etc.
+client request header lines while caching.
+*) Bugfix: now the "Set-Cookie" and "P3P" header lines are hidden in
+cacheable responses.
+*) Bugfix: if nginx was built with the ngx_http_perl_module and with a
+perl which supports threads, then during a master process exit the
+message "panic: MUTEX_LOCK" might be issued.
+*) Bugfix: nginx could not be built --without-http-cache; the bug had
+appeared in 0.7.48.
+*) Bugfix: nginx could not be built on platforms different from i386,
+amd64, sparc, and ppc; the bug had appeared in 0.7.42.
+Changes with nginx 0.7.51                                        12 Apr 2009
+*) Feature: the "try_files" directive supports a response code in the
+fallback parameter.
+*) Feature: now any response code can be used in the "return" directive.
+*) Bugfix: the "error_page" directive made an external redirect without
+query string; the bug had appeared in 0.7.44.
+*) Bugfix: if servers listened on several defined explicitly addresses,
+then virtual servers might not work; the bug had appeared in 0.7.39.
+Changes with nginx 0.7.50                                        06 Apr 2009
+*) Bugfix: the $arg_... variables did not work; the bug had appeared in
+0.7.49.
+Changes with nginx 0.7.49                                        06 Apr 2009
+*) Bugfix: a segmentation fault might occur in worker process, if the
+$arg_... variables were used; the bug had appeared in 0.7.48.
+Changes with nginx 0.7.48                                        06 Apr 2009
+*) Feature: the "proxy_cache_key" directive.
+*) Bugfix: now nginx takes into account the "X-Accel-Expires",
+"Expires", and "Cache-Control" header lines in a backend response.
+*) Bugfix: now nginx caches responses for the GET requests only.
+*) Bugfix: the "fastcgi_cache_key" directive was not inherited.
+*) Bugfix: the $arg_... variables did not work with SSI subrequests.
+Thanks to Maxim Dounin.
+*) Bugfix: nginx could not be built with uclibc library.
+Thanks to Timothy Redaelli.
+*) Bugfix: nginx could not be built on OpenBSD; the bug had
+appeared in 0.7.46.
+Changes with nginx 0.7.47                                        01 Apr 2009
+*) Bugfix: nginx could not be built on FreeBSD 6 and early versions; the
+bug had appeared in 0.7.46.
+*) Bugfix: nginx could not be built on MacOSX; the bug had
+appeared in 0.7.46.
+*) Bugfix: if the "max_size" parameter was set, then the cache manager
+might purge a whole cache; the bug had appeared in 0.7.46.
+*) Change: a segmentation fault might occur in worker process, if the
+"proxy_cache"/"fastcgi_cache" and the "proxy_cache_valid"/
+"fastcgi_cache_valid" were set on different levels; the bug had
+appeared in 0.7.46.
+*) Bugfix: a segmentation fault might occur in worker process, if a
+request was redirected to a proxied or FastCGI server via error_page
+or try_files; the bug had appeared in 0.7.44.
+Changes with nginx 0.7.46                                        30 Mar 2009
+*) Bugfix: the previous release tarball was incorrect.
+Changes with nginx 0.7.45                                        30 Mar 2009
+*) Change: now the "proxy_cache" and the "proxy_cache_valid" directives
+can be set on different levels.
+*) Change: the "clean_time" parameter of the "proxy_cache_path"
+directive is canceled.
+*) Feature: the "max_size" parameter of the "proxy_cache_path"
+directive.
+*) Feature: the ngx_http_fastcgi_module preliminary cache support.
+*) Feature: now on shared memory allocation errors directive and zone
+names are logged.
+*) Bugfix: the directive "add_header last-modified ''" did not delete a
+"Last-Modified" response header line; the bug had appeared in 0.7.44.
+*) Bugfix: a relative path in the "auth_basic_user_file" directive given
+without variables did not work; the bug had appeared in 0.7.44.
+Thanks to Jerome Loyet.
+*) Bugfix: in an "alias" directive given using variables without
+references to captures of regular expressions; the bug had appeared
+in 0.7.42.
+Changes with nginx 0.7.44                                        23 Mar 2009
+*) Feature: the ngx_http_proxy_module preliminary cache support.
+*) Feature: the --with-pcre option in the configure.
+*) Feature: the "try_files" directive is now allowed on the server block
+level.
+*) Bugfix: the "try_files" directive handled incorrectly a query string
+in a fallback parameter.
+*) Bugfix: the "try_files" directive might test incorrectly directories.
+*) Bugfix: if there was a single server for given address:port pair,
+then captures in regular expressions in a "server_name" directive did
+not work.
+Changes with nginx 0.7.43                                        18 Mar 2009
+*) Bugfix: a request was handled incorrectly, if a "root" directive used
+variables; the bug had appeared in 0.7.42.
+*) Bugfix: if a server listened on wildcard address, then the
+$server_addr variable value was "0.0.0.0"; the bug had appeared in
+0.7.36.
+Changes with nginx 0.7.42                                        16 Mar 2009
+*) Change: now the "Invalid argument" error returned by
+setsockopt(TCP_NODELAY) on Solaris, is ignored.
+*) Change: now if a file specified in a "auth_basic_user_file" directive
+is absent, then the 403 error is returned instead of the 500 one.
+*) Feature: the "auth_basic_user_file" directive supports variables.
+Thanks to Kirill A. Korinskiy.
+*) Feature: the "listen" directive supports the "ipv6only" parameter.
+Thanks to Zhang Hua.
+*) Bugfix: in an "alias" directive with references to captures of
+regular expressions; the bug had appeared in 0.7.40.
+*) Bugfix: compatibility with Tru64 UNIX.
+Thanks to Dustin Marquess.
+*) Bugfix: nginx could not be built without PCRE library; the bug had
+appeared in 0.7.41.
+Changes with nginx 0.7.41                                        11 Mar 2009
+*) Bugfix: a segmentation fault might occur in worker process, if a
+"server_name" or a "location" directives had captures in regular
+expressions; the issue had appeared in 0.7.40.
+Thanks to Vladimir Sopot.
+Changes with nginx 0.7.40                                        09 Mar 2009
+*) Feature: the "location" directive supports captures in regular
+expressions.
+*) Feature: an "alias" directive with capture references may be used
+inside a location given by a regular expression with captures.
+*) Feature: the "server_name" directive supports captures in regular
+expressions.
+*) Workaround: the ngx_http_autoindex_module did not show the trailing
+slash in directories on XFS filesystem; the issue had appeared in
+0.7.15.
+Thanks to Dmitry Kuzmenko.
+Changes with nginx 0.7.39                                        02 Mar 2009
+*) Bugfix: large response with SSI might hang, if gzipping was enabled;
+the bug had appeared in 0.7.28.
+Thanks to Artem Bokhan.
+*) Bugfix: a segmentation fault might occur in worker process, if short
+static variants are used in a "try_files" directive.
+Changes with nginx 0.7.38                                        23 Feb 2009
+*) Feature: authentication failures logging.
+*) Bugfix: name/password in auth_basic_user_file were ignored after odd
+number of empty lines.
+Thanks to Alexander Zagrebin.
+*) Bugfix: a segmentation fault occurred in a master process, if long
+path was used in unix domain socket; the bug had appeared in 0.7.36.
+Changes with nginx 0.7.37                                        21 Feb 2009
+*) Bugfix: directives using upstreams did not work; the bug had appeared
+in 0.7.36.
+Changes with nginx 0.7.36                                        21 Feb 2009
+*) Feature: a preliminary IPv6 support; the "listen" directive of the
+HTTP module supports IPv6.
+*) Bugfix: the $ancient_browser variable did not work for browsers
+preset by a "modern_browser" directives.
+Changes with nginx 0.7.35                                        16 Feb 2009
+*) Bugfix: a "ssl_engine" directive did not use a SSL-accelerator for
+asymmetric ciphers.
+Thanks to Marcin Gozdalik.
+*) Bugfix: a "try_files" directive set MIME type depending on an
+original request extension.
+*) Bugfix: "*domain.tld" names were handled incorrectly in
+"server_name", "valid_referers", and "map" directives, if
+".domain.tld" and ".subdomain.domain.tld" wildcards were used;
+the bug had appeared in 0.7.9.
+Changes with nginx 0.7.34                                        10 Feb 2009
+*) Feature: the "off" parameter of the "if_modified_since" directive.
+*) Feature: now nginx sends an HELO/EHLO command after a XCLIENT
+command.
+Thanks to Maxim Dounin.
+*) Feature: Microsoft specific "AUTH LOGIN with User Name" mode support
+in mail proxy server.
+Thanks to Maxim Dounin.
+*) Bugfix: in a redirect rewrite directive original arguments were
+concatenated with new arguments by a "?" rather than an "&";
+the bug had appeared in 0.1.18.
+Thanks to Maxim Dounin.
+*) Bugfix: nginx could not be built on AIX.
+Changes with nginx 0.7.33                                        02 Feb 2009
+*) Bugfix: a double response might be returned if the epoll or rtsig
+methods are used and a redirect was returned to a request with body.
+Thanks to Eden Li.
+*) Bugfix: the $sent_http_location variable was empty for some redirects
+types.
+*) Bugfix: a segmentation fault might occur in worker process if
+"resolver" directive was used in SMTP proxy.
+Changes with nginx 0.7.32                                        26 Jan 2009
+*) Feature: now a directory existence testing can be set explicitly in
+the "try_files" directive.
+*) Bugfix: fastcgi_store stored files not always.
+*) Bugfix: in geo ranges.
+*) Bugfix: in shared memory allocations if nginx was built without
+debugging.
+Thanks to Andrey Kvasov.
+Changes with nginx 0.7.31                                        19 Jan 2009
+*) Change: now the "try_files" directive tests files only and ignores
+directories.
+*) Feature: the "fastcgi_split_path_info" directive.
+*) Bugfixes in an "Expect" request header line support.
+*) Bugfixes in geo ranges.
+*) Bugfix: in a miss case ngx_http_memcached_module returned the "END"
+line as response body instead of default 404 page body; the bug had
+appeared in 0.7.18.
+Thanks to Maxim Dounin.
+*) Bugfix: while SMTP proxying nginx issued message "250 2.0.0 OK"
+instead of "235 2.0.0 OK"; the bug had appeared in 0.7.22.
+Thanks to Maxim Dounin.
+Changes with nginx 0.7.30                                        24 Dec 2008
+*) Bugfix: a segmentation fault occurred in worker process, if variables
+were used in the "fastcgi_pass" or "proxy_pass" directives and host
+name must be resolved; the bug had appeared in 0.7.29.
+Changes with nginx 0.7.29                                        24 Dec 2008
+*) Bugfix: the "fastcgi_pass" and "proxy_pass" directives did not
+support variables if unix domain sockets were used.
+*) Bugfixes in subrequest processing; the bugs had appeared in 0.7.25.
+*) Bugfix: a "100 Continue" response was issued for HTTP/1.0 requests;
+Thanks to Maxim Dounin.
+*) Bugfix: in memory allocation in the ngx_http_gzip_filter_module on
+Cygwin.
+Changes with nginx 0.7.28                                        22 Dec 2008
+*) Change: in memory allocation in the ngx_http_gzip_filter_module.
+*) Change: the default "gzip_buffers" directive values have been changed
+to 32 4k or 16 8k from 4 4k/8k.
+Changes with nginx 0.7.27                                        15 Dec 2008
+*) Feature: the "try_files" directive.
+*) Feature: variables support in the "fastcgi_pass" directive.
+*) Feature: now the $geo variable may get an address from a variable.
+Thanks to Andrei Nigmatulin.
+*) Feature: now a location's modifier may be used without space before
+name.
+*) Feature: the $upstream_response_length variable.
+*) Bugfix: now a "add_header" directive does not add an empty value.
+*) Bugfix: if zero length static file was requested, then nginx just
+closed connection; the bug had appeared in 0.7.25.
+*) Bugfix: a MOVE method could not move file in non-existent directory.
+*) Bugfix: a segmentation fault occurred in worker process, if no one
+named location was defined in server, but some one was used in an
+error_page directive.
+Thanks to Sergey Bochenkov.
+Changes with nginx 0.7.26                                        08 Dec 2008
+*) Bugfix: in subrequest processing; the bug had appeared in 0.7.25.
+Changes with nginx 0.7.25                                        08 Dec 2008
+*) Change: in subrequest processing.
+*) Change: now POSTs without "Content-Length" header line are allowed.
+*) Bugfix: now the "limit_req" and "limit_conn" directives log a
+prohibition reason.
+*) Bugfix: in the "delete" parameter of the "geo" directive.
+Changes with nginx 0.7.24                                        01 Dec 2008
+*) Feature: the "if_modified_since" directive.
+*) Bugfix: nginx did not process a FastCGI server response, if the
+server send too many messages to stderr before response.
+*) Bugfix: the "$cookie_..." variables did not work in the SSI and the
+perl module.
+Changes with nginx 0.7.23                                        27 Nov 2008
+*) Feature: the "delete" and "ranges" parameters in the "geo" directive.
+*) Feature: speeding up loading of geo base with large number of values.
+*) Feature: decrease of memory required for geo base load.
+Changes with nginx 0.7.22                                        20 Nov 2008
+*) Feature: the "none" parameter in the "smtp_auth" directive.
+Thanks to Maxim Dounin.
+*) Feature: the "$cookie_..." variables.
+*) Bugfix: the "directio" directive did not work in XFS filesystem.
+*) Bugfix: the resolver did not understand big DNS responses.
+Thanks to Zyb.
+Changes with nginx 0.7.21                                        11 Nov 2008
+*) Changes in the ngx_http_limit_req_module.
+*) Feature: the EXSLT support in the ngx_http_xslt_module.
+Thanks to Denis F. Latypoff.
+*) Workaround: compatibility with glibc 2.3.
+Thanks to Eric Benson and Maxim Dounin.
+*) Bugfix: nginx could not run on MacOSX 10.4 and earlier; the bug had
+appeared in 0.7.6.
+Changes with nginx 0.7.20                                        10 Nov 2008
+*) Changes in the ngx_http_gzip_filter_module.
+*) Feature: the ngx_http_limit_req_module.
+*) Bugfix: worker processes might exit on a SIGBUS signal on sparc and
+ppc platforms; the bug had appeared in 0.7.3.
+Thanks to Maxim Dounin.
+*) Bugfix: the "proxy_pass http://host/some:uri" directives did not
+work; the bug had appeared in 0.7.12.
+*) Bugfix: in HTTPS mode requests might fail with the "bad write retry"
+error.
+*) Bugfix: the ngx_http_secure_link_module did not work inside
+locations, whose names are less than 3 characters.
+*) Bugfix: $server_addr variable might have no value.
+Changes with nginx 0.7.19                                        13 Oct 2008
+*) Bugfix: version number update.
+Changes with nginx 0.7.18                                        13 Oct 2008
+*) Change: the "underscores_in_headers" directive; now nginx does not
+allows underscores in a client request header line names.
+*) Feature: the ngx_http_secure_link_module.
+*) Feature: the "real_ip_header" directive supports any header.
+*) Feature: the "log_subrequest" directive.
+*) Feature: the $realpath_root variable.
+*) Feature: the "http_502" and "http_504" parameters of the
+"proxy_next_upstream" directive.
+*) Bugfix: the "http_503" parameter of the "proxy_next_upstream" or
+"fastcgi_next_upstream" directives did not work.
+*) Bugfix: nginx might send a "Transfer-Encoding: chunked" header line
+for HEAD requests.
+*) Bugfix: now accept threshold depends on worker_connections.
+Changes with nginx 0.7.17                                        15 Sep 2008
+*) Feature: now the "directio" directive works on Linux.
+*) Feature: the $pid variable.
+*) Bugfix: the "directio" optimization that had appeared in 0.7.15 did
+not work with open_file_cache.
+*) Bugfix: the "access_log" with variables did not work on Linux; the
+bug had appeared in 0.7.7.
+*) Bugfix: the ngx_http_charset_module did not understand quoted charset
+name received from backend.
+Changes with nginx 0.7.16                                        08 Sep 2008
+*) Bugfix: nginx could not be built on 64-bit platforms; the bug had
+appeared in 0.7.15.
+Changes with nginx 0.7.15                                        08 Sep 2008
+*) Feature: the ngx_http_random_index_module.
+*) Feature: the "directio" directive has been optimized for file
+requests starting from arbitrary position.
+*) Feature: the "directio" directive turns off sendfile if it is
+necessary.
+*) Feature: now nginx allows underscores in a client request header line
+names.
+Changes with nginx 0.7.14                                        01 Sep 2008
+*) Change: now the ssl_certificate and ssl_certificate_key directives
+have no default values.
+*) Feature: the "listen" directive supports the "ssl" parameter.
+*) Feature: now nginx takes into account a time zone change while
+reconfiguration on FreeBSD and Linux.
+*) Bugfix: the "listen" directive parameters such as "backlog",
+"rcvbuf", etc. were not set, if a default server was not the first
+one.
+*) Bugfix: if URI part captured by a "rewrite" directive was used as a
+query string, then the query string was not escaped.
+*) Bugfix: configuration file validity test improvements.
+Changes with nginx 0.7.13                                        26 Aug 2008
+*) Bugfix: nginx could not be built on Linux and Solaris; the bug had
+appeared in 0.7.12.
+Changes with nginx 0.7.12                                        26 Aug 2008
+*) Feature: the "server_name" directive supports empty name "".
+*) Feature: the "gzip_disable" directive supports special "msie6" mask.
+*) Bugfix: if the "max_fails=0" parameter was used in upstream with
+several servers, then a worker process exited on a SIGFPE signal.
+Thanks to Maxim Dounin.
+*) Bugfix: a request body was dropped while redirection via an
+"error_page" directive.
+*) Bugfix: a full response was returned for request method HEAD while
+redirection via an "error_page" directive.
+*) Bugfix: the $r->header_in() method did not return value of the
+"Host", "User-Agent", and "Connection" request header lines; the bug
+had appeared in 0.7.0.
+Changes with nginx 0.7.11                                        18 Aug 2008
+*) Change: now ngx_http_charset_module does not work by default with
+text/css MIME type.
+*) Feature: now nginx returns the 405 status code for POST method
+requesting a static file only if the file exists.
+*) Feature: the "proxy_ssl_session_reuse" directive.
+*) Bugfix: a "proxy_pass" directive without URI part might use original
+request after the "X-Accel-Redirect" redirection was used.
+*) Bugfix: if a directory has search only rights and the first index
+file was absent, then nginx returned the 500 status code.
+*) Bugfix: in inclusive locations; the bugs had appeared in 0.7.1.
+Changes with nginx 0.7.10                                        13 Aug 2008
+*) Bugfix: in the "addition_types", "charset_types", "gzip_types",
+"ssi_types", "sub_filter_types", and "xslt_types" directives; the
+bugs had appeared in 0.7.9.
+*) Bugfix: of recursive error_page for 500 status code.
+*) Bugfix: now the ngx_http_realip_module sets address not for whole
+keepalive connection, but for each request passed via the connection.
+Changes with nginx 0.7.9                                         12 Aug 2008
+*) Change: now ngx_http_charset_module works by default with following
+MIME types: text/html, text/css, text/xml, text/plain,
+text/vnd.wap.wml, application/x-javascript, and application/rss+xml.
+*) Feature: the "charset_types" and "addition_types" directives.
+*) Feature: now the "gzip_types", "ssi_types", and "sub_filter_types"
+directives use hash.
+*) Feature: the ngx_cpp_test_module.
+*) Feature: the "expires" directive supports daily time.
+*) Feature: the ngx_http_xslt_module improvements and bug fixing.
+Thanks to Denis F. Latypoff and Maxim Dounin.
+*) Bugfix: the "log_not_found" directive did not work for index files
+tests.
+*) Bugfix: HTTPS connections might hang, if kqueue, epoll, rtsig, or
+eventport methods were used; the bug had appeared in 0.7.7.
+*) Bugfix: if the "server_name", "valid_referers", and "map" directives
+used an "*.domain.tld" wildcard and exact name "domain.tld" was not
+set, then the exact name was matched by the wildcard; the bug had
+appeared in 0.3.18.
+Changes with nginx 0.7.8                                         04 Aug 2008
+*) Feature: the ngx_http_xslt_module.
+*) Feature: the "$arg_..." variables.
+*) Feature: Solaris directio support.
+Thanks to Ivan Debnar.
+*) Bugfix: now if FastCGI server sends a "Location" header line without
+status line, then nginx uses 302 status code.
+Thanks to Maxim Dounin.
+Changes with nginx 0.7.7                                         30 Jul 2008
+*) Change: now the EAGAIN error returned by connect() is not considered
+as temporary error.
+*) Change: now the $ssl_client_cert variable value is a certificate with
+TAB character intended before each line except first one; an
+unchanged certificate is available in the $ssl_client_raw_cert
+variable.
+*) Feature: the "ask" parameter in the "ssl_verify_client" directive.
+*) Feature: byte-range processing improvements.
+Thanks to Maxim Dounin.
+*) Feature: the "directio" directive.
+Thanks to Jiang Hong.
+*) Feature: MacOSX 10.5 sendfile() support.
+*) Bugfix: now in MacOSX and Cygwin locations are tested in case
+insensitive mode; however, the compare is provided by single-byte
+locales only.
+*) Bugfix: mail proxy SSL connections hanged, if select, poll, or
+/dev/poll methods were used.
+*) Bugfix: UTF-8 encoding usage in the ngx_http_autoindex_module.
+Changes with nginx 0.7.6                                         07 Jul 2008
+*) Bugfix: now if variables are used in the "access_log" directive a
+request root existence is always tested.
+*) Bugfix: the ngx_http_flv_module did not support several values in a
+query string.
+Changes with nginx 0.7.5                                         01 Jul 2008
+*) Bugfixes in variables support in the "access_log" directive; the bugs
+had appeared in 0.7.4.
+*) Bugfix: nginx could not be built --without-http_gzip_module; the bug
+had appeared in 0.7.3.
+Thanks to Kirill A. Korinskiy.
+*) Bugfix: if sub_filter and SSI were used together, then responses
+might were transferred incorrectly.
+Changes with nginx 0.7.4                                         30 Jun 2008
+*) Feature: variables support in the "access_log" directive.
+*) Feature: the "open_log_file_cache" directive.
+*) Feature: the -g switch.
+*) Feature: the "Expect" request header line support.
+*) Bugfix: large SSI inclusions might be truncated.
+Changes with nginx 0.7.3                                         23 Jun 2008
+*) Change: the "rss" extension MIME type has been changed to
+"application/rss+xml".
+*) Change: now the "gzip_vary" directive turned on issues a
+"Vary: Accept-Encoding" header line for uncompressed responses too.
+*) Feature: now the "rewrite" directive does a redirect automatically if
+the "https://" protocol is used.
+*) Bugfix: the "proxy_pass" directive did not work with the HTTPS
+protocol; the bug had appeared in 0.6.9.
+Changes with nginx 0.7.2                                         16 Jun 2008
+*) Feature: now nginx supports EDH key exchange ciphers.
+*) Feature: the "ssl_dhparam" directive.
+*) Feature: the $ssl_client_cert variable.
+Thanks to Manlio Perillo.
+*) Bugfix: after changing URI via a "rewrite" directive nginx did not
+search a new location; the bug had appeared in 0.7.1.
+Thanks to Maxim Dounin.
+*) Bugfix: nginx could not be built without PCRE library; the bug had
+appeared in 0.7.1.
+*) Bugfix: when a request to a directory was redirected with the slash
+added, nginx dropped a query string from the original request.
+Changes with nginx 0.7.1                                         26 May 2008
+*) Change: now locations are searched in a tree.
+*) Change: the "optimize_server_names" directive was canceled due to the
+"server_name_in_redirect" directive introduction.
+*) Change: some long deprecated directives are not supported anymore.
+*) Change: the "none" parameter in the "ssl_session_cache" directive;
+now this is default parameter.
+Thanks to Rob Mueller.
+*) Bugfix: worker processes might not catch reconfiguration and log
+rotation signals.
+*) Bugfix: nginx could not be built on latest Fedora 9 Linux.
+Thanks to Roxis.
+Changes with nginx 0.7.0                                         19 May 2008
+*) Change: now the 0x00-0x1F, '"' and '\' characters are escaped as \xXX
+in an access_log.
+Thanks to Maxim Dounin.
+*) Change: now nginx allows several "Host" request header line.
+*) Feature: the "modified" flag in the "expires" directive.
+*) Feature: the $uid_got and $uid_set variables may be used at any
+request processing stage.
+*) Feature: the $hostname variable.
+Thanks to Andrei Nigmatulin.
+*) Feature: DESTDIR support.
+Thanks to Todd A. Fisher and Andras Voroskoi.
+*) Bugfix: a segmentation fault might occur in worker process on Linux,
+if keepalive was enabled.
+Changes with nginx 0.6.31                                        12 May 2008
+*) Bugfix: nginx did not process FastCGI response if header was at the
+end of FastCGI record; the bug had appeared in 0.6.2.
+Thanks to Sergey Serov.
+*) Bugfix: a segmentation fault might occur in worker process if a file
+was deleted and the "open_file_cache_errors" directive was off.
+Changes with nginx 0.6.30                                        29 Apr 2008
+*) Change: now if an "include" directive pattern does not match any
+file, then nginx does not issue an error.
+*) Feature: now the time in directives may be specified without spaces,
+for example, "1h50m".
+*) Bugfix: memory leaks if the "ssl_verify_client" directive was on.
+Thanks to Chavelle Vincent.
+*) Bugfix: the "sub_filter" directive might set text to change into
+output.
+*) Bugfix: the "error_page" directive did not take into account
+arguments in redirected URI.
+*) Bugfix: now nginx always opens files in binary mode under Cygwin.
+*) Bugfix: nginx could not be built on OpenBSD; the bug had appeared in
+0.6.15.
+Changes with nginx 0.6.29                                        18 Mar 2008
+*) Feature: the ngx_google_perftools_module.
+*) Bugfix: the ngx_http_perl_module could not be built on 64-bit
+platforms; the bug had appeared in 0.6.27.
+Changes with nginx 0.6.28                                        13 Mar 2008
+*) Bugfix: the rtsig method could not be built; the bug had appeared in
+0.6.27.
+Changes with nginx 0.6.27                                        12 Mar 2008
+*) Change: now by default the rtsig method is not built on
+Linux 2.6.18+.
+*) Change: now a request method is not changed while redirection to a
+named location via an "error_page" directive.
+*) Feature: the "resolver" and "resolver_timeout" directives in SMTP
+proxy.
+*) Feature: the "post_action" directive supports named locations.
+*) Bugfix: a segmentation fault occurred in worker process, if a request
+was redirected from proxy, FastCGI, or memcached location to static
+named locations.
+*) Bugfix: browsers did not repeat SSL handshake if there is no valid
+client certificate in first handshake.
+Thanks to Alexander V. Inyukhin.
+*) Bugfix: if response code 495-497 was redirected via an "error_page"
+directive without code change, then nginx tried to allocate too many
+memory.
+*) Bugfix: memory leak in long-lived non buffered connections.
+*) Bugfix: memory leak in resolver.
+*) Bugfix: a segmentation fault occurred in worker process, if a request
+was redirected from proxy, FastCGI, or memcached location to static
+named locations.
+*) Bugfix: in the $proxy_host and $proxy_port variables caching.
+Thanks to Sergey Bochenkov.
+*) Bugfix: a "proxy_pass" directive with variables used incorrectly the
+same port as in another "proxy_pass" directive with the same host
+name and without variables.
+Thanks to Sergey Bochenkov.
+*) Bugfix: an alert "sendmsg() failed (9: Bad file descriptor)" on some
+64-bit platforms while reconfiguration.
+*) Bugfix: a segmentation fault occurred in worker process, if empty
+stub block was used second time in SSI.
+*) Bugfix: in copying URI part contained escaped symbols into arguments.
+Changes with nginx 0.6.26                                        11 Feb 2008
+*) Bugfix: the "proxy_store" and "fastcgi_store" directives did not
+check a response length.
+*) Bugfix: a segmentation fault occurred in worker process, if big value
+was used in a "expires" directive.
+Thanks to Joaquin Cuenca Abela.
+*) Bugfix: nginx incorrectly detected cache line size on Pentium 4.
+Thanks to Gena Makhomed.
+*) Bugfix: in proxied or FastCGI subrequests a client original method
+was used instead of the GET method.
+*) Bugfix: socket leak in HTTPS mode if deferred accept was used.
+Thanks to Ben Maurer.
+*) Bugfix: nginx issued the bogus error message "SSL_shutdown() failed
+(SSL: )"; the bug had appeared in 0.6.23.
+*) Bugfix: in HTTPS mode requests might fail with the "bad write retry"
+error; the bug had appeared in 0.6.23.
+Changes with nginx 0.6.25                                        08 Jan 2008
+*) Change: now the "server_name_in_redirect" directive is used instead
+of the "server_name" directive's special "*" parameter.
+*) Change: now wildcard and regex names can be used as main name in a
+"server_name" directive.
+*) Change: the "satisfy_any" directive was replaced by the "satisfy"
+directive.
+*) Workaround: old worker processes might hog CPU after reconfiguration
+if they was run under Linux OpenVZ.
+*) Feature: the "min_delete_depth" directive.
+*) Bugfix: the COPY and MOVE methods did not work with single files.
+*) Bugfix: the ngx_http_gzip_static_module did not allow the
+ngx_http_dav_module to work; the bug had appeared in 0.6.23.
+*) Bugfix: socket leak in HTTPS mode if deferred accept was used.
+Thanks to Ben Maurer.
+*) Bugfix: nginx could not be built without PCRE library; the bug had
+appeared in 0.6.23.
+Changes with nginx 0.6.24                                        27 Dec 2007
+*) Bugfix: a segmentation fault might occur in worker process if HTTPS
+was used; the bug had appeared in 0.6.23.
+Changes with nginx 0.6.23                                        27 Dec 2007
+*) Change: the "off" parameter in the "ssl_session_cache" directive; now
+this is default parameter.
+*) Change: the "open_file_cache_retest" directive was renamed to the
+"open_file_cache_valid".
+*) Feature: the "open_file_cache_min_uses" directive.
+*) Feature: the ngx_http_gzip_static_module.
+*) Feature: the "gzip_disable" directive.
+*) Feature: the "memcached_pass" directive may be used inside the "if"
+block.
+*) Bugfix: a segmentation fault occurred in worker process, if the
+"memcached_pass" and "if" directives were used in the same location.
+*) Bugfix: if a "satisfy_any on" directive was used and not all access
+and auth modules directives were set, then other given access and
+auth directives were not tested;
+*) Bugfix: regex parameters in a "valid_referers" directive were not
+inherited from previous level.
+*) Bugfix: a "post_action" directive did run if a request was completed
+with 499 status code.
+*) Bugfix: optimization of 16K buffer usage in a SSL connection.
+Thanks to Ben Maurer.
+*) Bugfix: the STARTTLS in SMTP mode did not work.
+Thanks to Oleg Motienko.
+*) Bugfix: in HTTPS mode requests might fail with the "bad write retry"
+error; the bug had appeared in 0.5.13.
+Changes with nginx 0.6.22                                        19 Dec 2007
+*) Change: now all ngx_http_perl_module methods return values copied to
+perl's allocated memory.
+*) Bugfix: if nginx was built with ngx_http_perl_module, the perl before
+5.8.6 was used, and perl supported threads, then during
+reconfiguration the master process aborted; the bug had appeared in
+0.5.9.
+Thanks to Boris Zhmurov.
+*) Bugfix: the ngx_http_perl_module methods may get invalid values of
+the regex captures.
+*) Bugfix: a segmentation fault occurred in worker process, if the
+$r->has_request_body() method was called for a request whose small
+request body was already received.
+*) Bugfix: large_client_header_buffers did not freed before going to
+keep-alive state.
+Thanks to Olexander Shtepa.
+*) Bugfix: the last address was missed in the $upstream_addr variable;
+the bug had appeared in 0.6.18.
+*) Bugfix: the "fastcgi_catch_stderr" directive did return error code;
+now it returns 502 code, that can be rerouted to a next server using
+the "fastcgi_next_upstream invalid_header" directive.
+*) Bugfix: a segmentation fault occurred in master process if the
+"fastcgi_catch_stderr" directive was used; the bug had appeared in
+0.6.10.
+Thanks to Manlio Perillo.
+Changes with nginx 0.6.21                                        03 Dec 2007
+*) Change: if variable values used in a "proxy_pass" directive contain
+IP-addresses only, then a "resolver" directive is not mandatory.
+*) Bugfix: a segmentation fault might occur in worker process if a
+"proxy_pass" directive with URI-part was used; the bug had appeared
+in 0.6.19.
+*) Bugfix: if resolver was used on platform that does not support
+kqueue, then nginx issued an alert "name is out of response".
+Thanks to Andrei Nigmatulin.
+*) Bugfix: if the $server_protocol was used in FastCGI parameters and a
+request line length was near to the "client_header_buffer_size"
+directive value, then nginx issued an alert "fastcgi: the request
+record is too big".
+*) Bugfix: if a plain text HTTP/0.9 version request was made to HTTPS
+server, then nginx returned usual response.
+Changes with nginx 0.6.20                                        28 Nov 2007
+*) Bugfix: a segmentation fault might occur in worker process if a
+"proxy_pass" directive with URI-part was used; the bug had appeared
+in 0.6.19.
+Changes with nginx 0.6.19                                        27 Nov 2007
+*) Bugfix: the 0.6.18 version could not be built.
+Changes with nginx 0.6.18                                        27 Nov 2007
+*) Change: now the ngx_http_userid_module adds start time microseconds
+to the cookie field contains a pid value.
+*) Change: now the full request line instead of URI only is written to
+error_log.
+*) Feature: variables support in the "proxy_pass" directive.
+*) Feature: the "resolver" and "resolver_timeout" directives.
+*) Feature: now the directive "add_header last-modified ''" deletes a
+"Last-Modified" response header line.
+*) Bugfix: the "limit_rate" directive did not allow to use full
+throughput, even if limit value was very high.
+Changes with nginx 0.6.17                                        15 Nov 2007
+*) Feature: the "If-Range" request header line support.
+Thanks to Alexander V. Inyukhin.
+*) Bugfix: URL double escaping in a redirect of the "msie_refresh"
+directive; the bug had appeared in 0.6.4.
+*) Bugfix: the "autoindex" directive did not work with the "alias /"
+directive.
+*) Bugfix: a segmentation fault might occur in worker process if
+subrequests were used.
+*) Bugfix: the big responses may be transferred truncated if SSL and
+gzip were used.
+*) Bugfix: the $status variable was equal to 0 if a proxied server
+returned response in HTTP/0.9 version.
+Changes with nginx 0.6.16                                        29 Oct 2007
+*) Change: now the uname(2) is used on Linux instead of procfs.
+Thanks to Ilya Novikov.
+*) Bugfix: if the "?" character was in a "error_page" directive, then it
+was escaped in a proxied request; the bug had appeared in 0.6.11.
+*) Bugfix: compatibility with mget.
+Changes with nginx 0.6.15                                        22 Oct 2007
+*) Feature: Cygwin compatibility.
+Thanks to Vladimir Kutakov.
+*) Feature: the "merge_slashes" directive.
+*) Feature: the "gzip_vary" directive.
+*) Feature: the "server_tokens" directive.
+*) Bugfix: nginx did not unescape URI in the "include" SSI command.
+*) Bugfix: the segmentation fault was occurred on start or while
+reconfiguration if variable was used in the "charset" or
+"source_charset" directives.
+*) Bugfix: nginx returned the 400 response on requests like
+"GET http://www.domain.com HTTP/1.0".
+Thanks to James Oakley.
+*) Bugfix: if request with request body was redirected using the
+"error_page" directive, then nginx tried to read the request body
+again; the bug had appeared in 0.6.7.
+*) Bugfix: a segmentation fault occurred in worker process if no
+server_name was explicitly defined for server processing request; the
+bug had appeared in 0.6.7.
+Changes with nginx 0.6.14                                        15 Oct 2007
+*) Change: now by default the "echo" SSI command uses entity encoding.
+*) Feature: the "encoding" parameter in the "echo" SSI command.
+*) Feature: the "access_log" directive may be used inside the
+"limit_except" block.
+*) Bugfix: if all upstream servers were failed, then all servers had got
+weight the was equal one until servers became alive; the bug had
+appeared in 0.6.6.
+*) Bugfix: a segmentation fault occurred in worker process if
+$date_local and $date_gmt were used outside the
+ngx_http_ssi_filter_module.
+*) Bugfix: a segmentation fault might occur in worker process if debug
+log was enabled.
+Thanks to Andrei Nigmatulin.
+*) Bugfix: ngx_http_memcached_module did not set
+$upstream_response_time.
+Thanks to Maxim Dounin.
+*) Bugfix: a worker process may got caught in an endless loop, if the
+memcached was used.
+*) Bugfix: nginx supported low case only "close" and "keep-alive" values
+in the "Connection" request header line; the bug had appeared in
+0.6.11.
+*) Bugfix: sub_filter did not work with empty substitution.
+*) Bugfix: in sub_filter parsing.
+Changes with nginx 0.6.13                                        24 Sep 2007
+*) Bugfix: nginx did not close directory file on HEAD request if
+autoindex was used.
+Thanks to Arkadiusz Patyk.
+Changes with nginx 0.6.12                                        21 Sep 2007
+*) Change: mail proxy was split on three modules: pop3, imap and smtp.
+*) Feature: the --without-mail_pop3_module, --without-mail_imap_module,
+and --without-mail_smtp_module configuration parameters.
+*) Feature: the "smtp_greeting_delay" and "smtp_client_buffer"
+directives of the ngx_mail_smtp_module.
+*) Bugfix: the trailing wildcards did not work; the bug had appeared in
+0.6.9.
+*) Bugfix: nginx could not start on Solaris if the shared PCRE library
+located in non-standard place was used.
+*) Bugfix: the "proxy_hide_header" and "fastcgi_hide_header" directives
+did not hide response header lines whose name was longer than 32
+characters.
+Thanks to Manlio Perillo.
+Changes with nginx 0.6.11                                        11 Sep 2007
+*) Bugfix: active connection counter always increased if mail proxy was
+used.
+*) Bugfix: if backend returned response header only using non-buffered
+proxy, then nginx closed backend connection on timeout.
+*) Bugfix: nginx did not support several "Connection" request header
+lines.
+*) Bugfix: if the "max_fails" was set for upstream server, then after
+first failure server weight was always one; the bug had appeared in
+0.6.6.
+Changes with nginx 0.6.10                                        03 Sep 2007
+*) Feature: the "open_file_cache", "open_file_cache_retest", and
+"open_file_cache_errors" directives.
+*) Bugfix: socket leak; the bug had appeared in 0.6.7.
+*) Bugfix: a charset set by the "charset" directive was not appended to
+the "Content-Type" header set by $r->send_http_header().
+*) Bugfix: a segmentation fault might occur in worker process if
+/dev/poll method was used.
+Changes with nginx 0.6.9                                         28 Aug 2007
+*) Bugfix: a worker process may got caught in an endless loop, if the
+HTTPS protocol was used; the bug had appeared in 0.6.7.
+*) Bugfix: if server listened on two addresses or ports and trailing
+wildcard was used, then nginx did not run.
+*) Bugfix: the "ip_hash" directive might incorrectly mark servers as
+down.
+*) Bugfix: nginx could not be built on amd64; the bug had appeared in
+0.6.8.
+Changes with nginx 0.6.8                                         20 Aug 2007
+*) Change: now nginx tries to set the "worker_priority",
+"worker_rlimit_nofile", "worker_rlimit_core", and
+"worker_rlimit_sigpending" without super-user privileges.
+*) Change: now nginx escapes space and "%" in request to a mail proxy
+authentication server.
+*) Change: now nginx escapes "%" in $memcached_key variable.
+*) Bugfix: nginx used path relative to configuration prefix for
+non-absolute configuration file path specified in the "-c" key; the
+bug had appeared in 0.6.6.
+*) Bugfix: nginx did not work on FreeBSD/sparc64.
+Changes with nginx 0.6.7                                         15 Aug 2007
+*) Change: now the paths specified in the "include",
+"auth_basic_user_file", "perl_modules", "ssl_certificate",
+"ssl_certificate_key", and "ssl_client_certificate" directives are
+relative to directory of nginx configuration file nginx.conf, but not
+to nginx prefix directory.
+*) Change: the --sysconfdir=PATH option in configure was canceled.
+*) Change: the special make target "upgrade1" was defined for online
+upgrade of 0.1.x versions.
+*) Feature: the "server_name" and "valid_referers" directives support
+regular expressions.
+*) Feature: the "server" directive in the "upstream" context supports
+the "backup" parameter.
+*) Feature: the ngx_http_perl_module supports the
+$r->discard_request_body.
+*) Feature: the "add_header Last-Modified ..." directive changes the
+"Last-Modified" response header line.
+*) Bugfix: if a response different than 200 was returned to a request
+with body and connection went to the keep-alive state after the
+request, then nginx returned 400 for the next request.
+*) Bugfix: a segmentation fault occurred in worker process if invalid
+address was set in the "auth_http" directive.
+*) Bugfix: now nginx uses default listen backlog value 511 on all
+platforms except FreeBSD.
+Thanks to Jiang Hong.
+*) Bugfix: a worker process may got caught in an endless loop, if a
+"server" inside "upstream" block was marked as "down"; the bug had
+appeared in 0.6.6.
+*) Bugfix: now Solaris sendfilev() is not used to transfer the client
+request body to FastCGI-server via the unix domain socket.
+Changes with nginx 0.6.6                                         30 Jul 2007
+*) Feature: the --sysconfdir=PATH option in configure.
+*) Feature: named locations.
+*) Feature: the $args variable can be set with the "set" directive.
+*) Feature: the $is_args variable.
+*) Bugfix: fair big weight upstream balancer.
+*) Bugfix: if a client has closed connection to mail proxy then nginx
+might not close connection to backend.
+*) Bugfix: if the same host without specified port was used as backend
+for HTTP and HTTPS, then nginx used only one port - 80 or 443.
+*) Bugfix: fix building on Solaris/amd64 by Sun Studio 11 and early
+versions; the bug had appeared in 0.6.4.
+Changes with nginx 0.6.5                                         23 Jul 2007
+*) Feature: $nginx_version variable.
+Thanks to Nick S. Grechukh.
+*) Feature: the mail proxy supports AUTHENTICATE in IMAP mode.
+Thanks to Maxim Dounin.
+*) Feature: the mail proxy supports STARTTLS in SMTP mode.
+Thanks to Maxim Dounin.
+*) Bugfix: now nginx escapes space in $memcached_key variable.
+*) Bugfix: nginx was incorrectly built by Sun Studio on Solaris/amd64.
+Thanks to Jiang Hong.
+*) Bugfix: of minor potential bugs.
+Thanks to Coverity's Scan.
+Changes with nginx 0.6.4                                         17 Jul 2007
+*) Security: the "msie_refresh" directive allowed XSS.
+Thanks to Maxim Boguk.
+*) Change: the "proxy_store" and "fastcgi_store" directives were
+changed.
+*) Feature: the "proxy_store_access" and "fastcgi_store_access"
+directives.
+*) Bugfix: nginx did not work on Solaris/sparc64 if it was built by Sun
+Studio.
+Thanks to Andrei Nigmatulin.
+*) Workaround: for Sun Studio 12.
+Thanks to Jiang Hong.
+Changes with nginx 0.6.3                                         12 Jul 2007
+*) Feature: the "proxy_store" and "fastcgi_store" directives.
+*) Bugfix: a segmentation fault might occur in worker process if the
+"auth_http_header" directive was used.
+Thanks to Maxim Dounin.
+*) Bugfix: a segmentation fault occurred in worker process if the
+CRAM-MD5 authentication method was used, but it was not enabled.
+*) Bugfix: a segmentation fault might occur in worker process when the
+HTTPS protocol was used in the "proxy_pass" directive.
+*) Bugfix: a segmentation fault might occur in worker process if the
+eventport method was used.
+*) Bugfix: the "proxy_ignore_client_abort" and
+"fastcgi_ignore_client_abort" directives did not work; the bug had
+appeared in 0.5.13.
+Changes with nginx 0.6.2                                         09 Jul 2007
+*) Bugfix: if the FastCGI header was split in records, then nginx passed
+garbage in the header to a client.
+Changes with nginx 0.6.1                                         17 Jun 2007
+*) Bugfix: in SSI parsing.
+*) Bugfix: if remote SSI subrequest was used, then posterior local file
+subrequest might transferred to client in wrong order.
+*) Bugfix: large SSI inclusions buffered in temporary files were
+truncated.
+*) Bugfix: the perl $$ variable value in ngx_http_perl_module was equal
+to the master process identification number.
+Changes with nginx 0.6.0                                         14 Jun 2007
+*) Feature: the "server_name", "map", and "valid_referers" directives
+support the "www.example.*" wildcards.
+Changes with nginx 0.5.25                                        11 Jun 2007
+*) Bugfix: nginx could not be built with the
+--without-http_rewrite_module parameter; the bug had appeared in
+0.5.24.
+Changes with nginx 0.5.24                                        06 Jun 2007
+*) Security: the "ssl_verify_client" directive did not work if request
+was made using HTTP/0.9.
+*) Bugfix: a part of response body might be passed uncompressed if gzip
+was used; the bug had appeared in 0.5.23.
+Changes with nginx 0.5.23                                        04 Jun 2007
+*) Feature: the ngx_http_ssl_module supports Server Name Indication TLS
+extension.
+*) Feature: the "fastcgi_catch_stderr" directive.
+Thanks to Nick S. Grechukh, OWOX project.
+*) Bugfix: a segmentation fault occurred in master process if two
+virtual servers should bind() to the overlapping ports.
+*) Bugfix: if nginx was built with ngx_http_perl_module and perl
+supported threads, then during second reconfiguration the error
+messages "panic: MUTEX_LOCK" and "perl_parse() failed" were issued.
+*) Bugfix: in the HTTPS protocol in the "proxy_pass" directive.
+Changes with nginx 0.5.22                                        29 May 2007
+*) Bugfix: a big request body might not be passed to backend; the bug
+had appeared in 0.5.21.
+Changes with nginx 0.5.21                                        28 May 2007
+*) Bugfix: if server has more than about ten locations, then regex
+locations might be chosen not in that order as they were specified.
+*) Bugfix: a worker process may got caught in an endless loop on 64-bit
+platform, if the 33-rd or next in succession backend has failed.
+Thanks to Anton Povarov.
+*) Bugfix: a bus error might occur on Solaris/sparc64 if the PCRE
+library was used.
+Thanks to Andrei Nigmatulin.
+*) Bugfix: in the HTTPS protocol in the "proxy_pass" directive.
+Changes with nginx 0.5.20                                        07 May 2007
+*) Feature: the "sendfile_max_chunk" directive.
+*) Feature: the "$http_...", "$sent_http_...", and "$upstream_http_..."
+variables may be changed using the "set" directive.
+*) Bugfix: a segmentation fault might occur in worker process if the SSI
+command 'if expr="$var = /"' was used.
+*) Bugfix: trailing boundary of multipart range response was transferred
+incorrectly.
+Thanks to Evan Miller.
+*) Bugfix: nginx did not work on Solaris/sparc64 if it was built by Sun
+Studio.
+Thanks to Andrei Nigmatulin.
+*) Bugfix: the ngx_http_perl_module could not be built by Solaris make.
+Thanks to Andrei Nigmatulin.
+Changes with nginx 0.5.19                                        24 Apr 2007
+*) Change: now the $request_time variable has millisecond precision.
+*) Change: the method $r->rflush of ngx_http_perl_module was renamed to
+the $r->flush.
+*) Feature: the $upstream_addr variable.
+*) Feature: the "proxy_headers_hash_max_size" and
+"proxy_headers_hash_bucket_size" directives.
+Thanks to Volodymyr Kostyrko.
+*) Bugfix: the files more than 2G could not be transferred using
+sendfile and limit_rate on 64-bit platforms.
+*) Bugfix: the files more than 2G could not be transferred using
+sendfile on 64-bit Linux.
+Changes with nginx 0.5.18                                        19 Apr 2007
+*) Feature: the ngx_http_sub_filter_module.
+*) Feature: the "$upstream_http_..." variables.
+*) Feature: now the $upstream_status and $upstream_response_time
+variables keep data about all upstreams before X-Accel-Redirect.
+*) Bugfix: a segmentation fault occurred in master process after first
+reconfiguration and receiving any signal if nginx was built with
+ngx_http_perl_module and perl did not support multiplicity; the bug
+had appeared in 0.5.9.
+*) Bugfix: if perl did not support multiplicity, then after
+reconfiguration perl code did not work; the bug had appeared in
+0.3.38.
+Changes with nginx 0.5.17                                        02 Apr 2007
+*) Change: now nginx always returns the 405 status for the TRACE method.
+*) Feature: now nginx supports the "include" directive inside the
+"types" block.
+*) Bugfix: the $document_root variable usage in the "root" and "alias"
+directives is disabled: this caused recursive stack overflow.
+*) Bugfix: in the HTTPS protocol in the "proxy_pass" directive.
+*) Bugfix: in some cases non-cacheable variables (such as $uri variable)
+returned old cached value.
+Changes with nginx 0.5.16                                        26 Mar 2007
+*) Bugfix: the C-class network was not used as hash key in the "ip_hash"
+directive.
+Thanks to Pavel Yarkovoy.
+*) Bugfix: a segmentation fault might occur in worker process if a
+charset was set in the "Content-Type" header line and the line has
+trailing ";"; the bug had appeared in 0.3.50.
+*) Bugfix: the "[alert] zero size buf" error when FastCGI server was
+used and a request body written in a temporary file was multiple of
+32K.
+*) Bugfix: nginx could not be built on Solaris without the --with-debug
+option; the bug had appeared in 0.5.15.
+Changes with nginx 0.5.15                                        19 Mar 2007
+*) Feature: the mail proxy supports authenticated SMTP proxying and the
+"smtp_auth", "smtp_capabilities", and "xclient" directives.
+Thanks to Anton Yuzhaninov and Maxim Dounin.
+*) Feature: now the keep-alive connections are closed just after
+receiving the reconfiguration signal.
+*) Change: the "imap" and "auth" directives were renamed to the "mail"
+and "pop3_auth" directives.
+*) Bugfix: a segmentation fault occurred in worker process if the
+CRAM-MD5 authentication method was used and the APOP method was
+disabled.
+*) Bugfix: if the "starttls only" directive was used in POP3 protocol,
+then nginx allowed authentication without switching to the SSL mode.
+*) Bugfix: worker processes did not exit after reconfiguration and did
+not rotate logs if the eventport method was used.
+*) Bugfix: a worker process may got caught in an endless loop, if the
+"ip_hash" directive was used.
+*) Bugfix: now nginx does not log some alerts if eventport or /dev/poll
+methods are used.
+Changes with nginx 0.5.14                                        23 Feb 2007
+*) Bugfix: nginx ignored superfluous closing "}" in the end of
+configuration file.
+Changes with nginx 0.5.13                                        19 Feb 2007
+*) Feature: the COPY and MOVE methods.
+*) Bugfix: the ngx_http_realip_module set garbage for requests passed
+via keep-alive connection.
+*) Bugfix: nginx did not work on big-endian 64-bit Linux.
+Thanks to Andrei Nigmatulin.
+*) Bugfix: now when IMAP/POP3 proxy receives too long command it closes
+the connection right away, but not after timeout.
+*) Bugfix: if the "epoll" method was used and a client closed a
+connection prematurely, then nginx closed the connection after a send
+timeout only.
+*) Bugfix: nginx could not be built on platforms different from i386,
+amd64, sparc, and ppc; the bug had appeared in 0.5.8.
+Changes with nginx 0.5.12                                        12 Feb 2007
+*) Bugfix: nginx could not be built on platforms different from i386,
+amd64, sparc, and ppc; the bug had appeared in 0.5.8.
+*) Bugfix: a segmentation fault might occur in worker process if the
+temporary files were used while working with FastCGI server; the bug
+had appeared in 0.5.8.
+*) Bugfix: a segmentation fault might occur in worker process if the
+$fastcgi_script_name variable was logged.
+*) Bugfix: ngx_http_perl_module could not be built on Solaris.
+Changes with nginx 0.5.11                                        05 Feb 2007
+*) Feature: now configure detects system PCRE library in MacPorts.
+Thanks to Chris McGrath.
+*) Bugfix: the response was incorrect if several ranges were requested;
+the bug had appeared in 0.5.6.
+*) Bugfix: the "create_full_put_path" directive could not create the
+intermediate directories if no "dav_access" directive was set.
+Thanks to Evan Miller.
+*) Bugfix: the "0" response code might be logged in the access_log
+instead of the "400" and "408" error codes.
+*) Bugfix: a segmentation fault might occur in worker process if nginx
+was built with -O2 optimization.
+Changes with nginx 0.5.10                                        26 Jan 2007
+*) Bugfix: while online executable file upgrade the new master process
+did not inherit the listening sockets; the bug had appeared in 0.5.9.
+*) Bugfix: a segmentation fault might occur in worker process if nginx
+was built with -O2 optimization; the bug had appeared in 0.5.1.
+Changes with nginx 0.5.9                                         25 Jan 2007
+*) Change: now the ngx_http_memcached_module uses the $memcached_key
+variable value as a key.
+*) Feature: the $memcached_key variable.
+*) Feature: the "clean" parameter in the "client_body_in_file_only"
+directive.
+*) Feature: the "env" directive.
+*) Feature: the "sendfile" directive is available inside the "if" block.
+*) Feature: now on failure of the writing to access nginx logs a message
+to error_log, but not more often than once a minute.
+*) Bugfix: the "access_log off" directive did not always turn off the
+logging.
+Changes with nginx 0.5.8                                         19 Jan 2007
+*) Bugfix: a segmentation fault might occur if
+"client_body_in_file_only on" was used and a request body was small.
+*) Bugfix: a segmentation fault occurred if
+"client_body_in_file_only on" and "proxy_pass_request_body off" or
+"fastcgi_pass_request_body off" directives were used, and nginx
+switched to a next upstream.
+*) Bugfix: if the "proxy_buffering off" directive was used and a client
+connection was non-active, then the connection was closed after send
+timeout; the bug had appeared in 0.4.7.
+*) Bugfix: if the "epoll" method was used and a client closed a
+connection prematurely, then nginx closed the connection after a send
+timeout only.
+*) Bugfix: the "[alert] zero size buf" error when FastCGI server was
+used.
+*) Bugfixes in the "limit_zone" directive.
+Changes with nginx 0.5.7                                         15 Jan 2007
+*) Feature: the ssl_session_cache storage optimization.
+*) Bugfixes in the "ssl_session_cache" and "limit_zone" directives.
+*) Bugfix: the segmentation fault was occurred on start or while
+reconfiguration if the "ssl_session_cache" or "limit_zone" directives
+were used on 64-bit platforms.
+*) Bugfix: a segmentation fault occurred if the "add_before_body" or
+"add_after_body" directives were used and there was no "Content-Type"
+header line in response.
+*) Bugfix: the OpenSSL library was always built with the threads
+support.
+Thanks to Den Ivanov.
+*) Bugfix: the PCRE-6.5+ library and the icc compiler compatibility.
+Changes with nginx 0.5.6                                         09 Jan 2007
+*) Change: now the ngx_http_index_module ignores all methods except the
+GET, HEAD, and POST methods.
+*) Feature: the ngx_http_limit_zone_module.
+*) Feature: the $binary_remote_addr variable.
+*) Feature: the "ssl_session_cache" directives of the
+ngx_http_ssl_module and ngx_imap_ssl_module.
+*) Feature: the DELETE method supports recursive removal.
+*) Bugfix: the byte-ranges were transferred incorrectly if the
+$r->sendfile() was used.
+Changes with nginx 0.5.5                                         24 Dec 2006
+*) Change: the -v switch does not show compiler information any more.
+*) Feature: the -V switch.
+*) Feature: the "worker_rlimit_core" directive supports size in K, M,
+and G.
+*) Bugfix: the nginx.pm module now could be installed by an unprivileged
+user.
+*) Bugfix: a segmentation fault might occur if the $r->request_body or
+$r->request_body_file methods were used.
+*) Bugfix: the ppc platform specific bugs.
+Changes with nginx 0.5.4                                         15 Dec 2006
+*) Feature: the "perl" directive may be used inside the "limit_except"
+block.
+*) Bugfix: the ngx_http_dav_module required the "Date" request header
+line for the DELETE method.
+*) Bugfix: if one only parameter was used in the "dav_access" directive,
+then nginx might report about configuration error.
+*) Bugfix: a segmentation fault might occur if the $host variable was
+used; the bug had appeared in 0.4.14.
+Changes with nginx 0.5.3                                         13 Dec 2006
+*) Feature: the ngx_http_perl_module supports the $r->status,
+$r->log_error, and $r->sleep methods.
+*) Feature: the $r->variable method supports variables that do not exist
+in nginx configuration.
+*) Bugfix: the $r->has_request_body method did not work.
+Changes with nginx 0.5.2                                         11 Dec 2006
+*) Bugfix: if the "proxy_pass" directive used the name of the "upstream"
+block, then nginx tried to resolve the name; the bug had appeared in
+0.5.1.
+Changes with nginx 0.5.1                                         11 Dec 2006
+*) Bugfix: the "post_action" directive might not run after a
+unsuccessful completion of a request.
+*) Workaround: for Eudora for Mac; the bug had appeared in 0.4.11.
+Thanks to Bron Gondwana.
+*) Bugfix: if the "upstream" name was used in the "fastcgi_pass", then
+the message "no port in upstream" was issued; the bug had appeared in
+0.5.0.
+*) Bugfix: if the "proxy_pass" and "fastcgi_pass" directives used the
+same servers but different ports, then these directives uses the
+first described port; the bug had appeared in 0.5.0.
+*) Bugfix: if the "proxy_pass" and "fastcgi_pass" directives used the
+unix domain sockets, then these directives used first described
+socket; the bug had appeared in 0.5.0.
+*) Bugfix: ngx_http_auth_basic_module ignored the user if it was in the
+last line in the password file and there was no the carriage return,
+the line feed, or the ":" symbol after the password.
+*) Bugfix: the $upstream_response_time variable might be equal to
+"0.000", although response time was more than 1 millisecond.
+Changes with nginx 0.5.0                                         04 Dec 2006
+*) Change: the parameters in the "%name" form in the "log_format"
+directive are not supported anymore.
+*) Change: the "proxy_upstream_max_fails",
+"proxy_upstream_fail_timeout", "fastcgi_upstream_max_fails",
+"fastcgi_upstream_fail_timeout", "memcached_upstream_max_fails", and
+"memcached_upstream_fail_timeout" directives are not supported
+anymore.
+*) Feature: the "server" directive in the "upstream" context supports
+the "max_fails", "fail_timeout", and "down" parameters.
+*) Feature: the "ip_hash" directive inside the "upstream" block.
+*) Feature: the WAIT status in the "Auth-Status" header line of the
+IMAP/POP3 proxy authentication server response.
+*) Bugfix: nginx could not be built on 64-bit platforms; the bug had
+appeared in 0.4.14.
+Changes with nginx 0.4.14                                        27 Nov 2006
+*) Feature: the "proxy_pass_error_message" directive in IMAP/POP3 proxy.
+*) Feature: now configure detects system PCRE library on FreeBSD, Linux,
+and NetBSD.
+*) Bugfix: ngx_http_perl_module did not work with perl built with the
+threads support; the bug had appeared in 0.3.38.
+*) Bugfix: ngx_http_perl_module did not work if perl was called
+recursively.
+*) Bugfix: nginx ignored a host name in a request line.
+*) Bugfix: a worker process may got caught in an endless loop, if a
+FastCGI server sent too many data to the stderr.
+*) Bugfix: the $upstream_response_time variable may be negative if the
+system time was changed backward.
+*) Bugfix: the "Auth-Login-Attempt" parameter was not sent to IMAP/POP3
+proxy authentication server when POP3 was used.
+*) Bugfix: a segmentation fault might occur if connect to IMAP/POP3
+proxy authentication server failed.
+Changes with nginx 0.4.13                                        15 Nov 2006
+*) Feature: the "proxy_pass" directive may be used inside the
+"limit_except" block.
+*) Feature: the "limit_except" directive supports all WebDAV methods.
+*) Bugfix: if the "add_before_body" directive was used without the
+"add_after_body" directive, then a response did not transferred
+complete.
+*) Bugfix: a large request body did not receive if the epoll method and
+the deferred accept() were used.
+*) Bugfix: a charset could not be set for ngx_http_autoindex_module
+responses; the bug had appeared in 0.3.50.
+*) Bugfix: the "[alert] zero size buf" error when FastCGI server was
+used;
+*) Bugfix: the --group= configuration parameter was ignored.
+Thanks to Thomas Moschny.
+*) Bugfix: the 50th subrequest in SSI response did not work; the bug had
+appeared in 0.3.50.
+Changes with nginx 0.4.12                                        31 Oct 2006
+*) Feature: the ngx_http_perl_module supports the $r->variable method.
+*) Bugfix: if a big static file was included using SSI in a response,
+then the response may be transferred incomplete.
+*) Bugfix: nginx did not omit the "#fragment" part in URI.
+Changes with nginx 0.4.11                                        25 Oct 2006
+*) Feature: the POP3 proxy supports the AUTH LOGIN PLAIN and CRAM-MD5.
+*) Feature: the ngx_http_perl_module supports the $r->allow_ranges
+method.
+*) Bugfix: if the APOP was enabled in the POP3 proxy, then the USER/PASS
+commands might not work; the bug had appeared in 0.4.10.
+Changes with nginx 0.4.10                                        23 Oct 2006
+*) Feature: the POP3 proxy supports the APOP command.
+*) Bugfix: if the select, poll or /dev/poll methods were used, then
+while waiting authentication server response the IMAP/POP3 proxy
+hogged CPU.
+*) Bugfix: a segmentation fault might occur if the $server_addr variable
+was used in the "map" directive.
+*) Bugfix: the ngx_http_flv_module did not support the byte ranges for
+full responses; the bug had appeared in 0.4.7.
+*) Bugfix: nginx could not be built on Debian amd64; the bug had
+appeared in 0.4.9.
+Changes with nginx 0.4.9                                         13 Oct 2006
+*) Feature: the "set" parameter in the "include" SSI command.
+*) Feature: the ngx_http_perl_module now tests the nginx.pm module
+version.
+Changes with nginx 0.4.8                                         11 Oct 2006
+*) Bugfix: if an "include" SSI command were before another "include" SSI
+command with a "wait" parameter, then the "wait" parameter might not
+work.
+*) Bugfix: the ngx_http_flv_module added the FLV header to the full
+responses.
+Thanks to Alexey Kovyrin.
+Changes with nginx 0.4.7                                         10 Oct 2006
+*) Feature: the ngx_http_flv_module.
+*) Feature: the $request_body_file variable.
+*) Feature: the "charset" and "source_charset" directives support the
+variables.
+*) Bugfix: if an "include" SSI command were before another "include" SSI
+command with a "wait" parameter, then the "wait" parameter might not
+work.
+*) Bugfix: if the "proxy_buffering off" directive was used or while
+working with memcached the connections might not be closed on
+timeout.
+*) Bugfix: nginx did not run on 64-bit platforms except amd64, sparc64,
+and ppc64.
+Changes with nginx 0.4.6                                         06 Oct 2006
+*) Bugfix: nginx did not run on 64-bit platforms except amd64, sparc64,
+and ppc64.
+*) Bugfix: nginx sent the chunked response for HTTP/1.1 request,
+if its length was set by text string in the
+$r->headers_out("Content-Length", ...) method.
+*) Bugfix: after redirecting error by an "error_page" directive any
+ngx_http_rewrite_module directive returned this error code; the bug
+had appeared in 0.4.4.
+Changes with nginx 0.4.5                                         02 Oct 2006
+*) Bugfix: nginx could not be built on Linux and Solaris; the bug had
+appeared in 0.4.4.
+Changes with nginx 0.4.4                                         02 Oct 2006
+*) Feature: the $scheme variable.
+*) Feature: the "expires" directive supports the "max" parameter.
+*) Feature: the "include" directive supports the "*" mask.
+Thanks to Jonathan Dance.
+*) Bugfix: the "return" directive always overrode the "error_page"
+response code redirected by the "error_page" directive.
+*) Bugfix: a segmentation fault occurred if zero-length body was in PUT
+method.
+*) Bugfix: the redirect was changed incorrectly if the variables were
+used in the "proxy_redirect" directive.
+Changes with nginx 0.4.3                                         26 Sep 2006
+*) Change: now the 499 error could not be redirected using an
+"error_page" directive.
+*) Feature: the Solaris 10 event ports support.
+*) Feature: the ngx_http_browser_module.
+*) Bugfix: a segmentation fault may occur while redirecting the 400
+error to the proxied server using a "proxy_pass" directive.
+*) Bugfix: a segmentation fault occurred if an unix domain socket was
+used in a "proxy_pass" directive; the bug had appeared in 0.3.47.
+*) Bugfix: SSI did work with memcached and nonbuffered responses.
+*) Workaround: of the Sun Studio PAUSE hardware capability bug.
+Changes with nginx 0.4.2                                         14 Sep 2006
+*) Bugfix: the O_NOATIME flag support on Linux was canceled; the bug had
+appeared in 0.4.1.
+Changes with nginx 0.4.1                                         14 Sep 2006
+*) Bugfix: the DragonFlyBSD compatibility.
+Thanks to Pavel Nazarov.
+*) Workaround: of bug in 64-bit Linux sendfile(), when file is more than
+2G.
+*) Feature: now on Linux nginx uses O_NOATIME flag for static requests.
+Thanks to Yusuf Goolamabbas.
+Changes with nginx 0.4.0                                         30 Aug 2006
+*) Change in internal API: the HTTP modules initialization was moved
+from the init module phase to the HTTP postconfiguration phase.
+*) Change: now the request body is not read beforehand for the
+ngx_http_perl_module: it's required to start the reading using the
+$r->has_request_body method.
+*) Feature: the ngx_http_perl_module supports the DECLINED return code.
+*) Feature: the ngx_http_dav_module supports the incoming "Date" header
+line for the PUT method.
+*) Feature: the "ssi" directive is available inside the "if" block.
+*) Bugfix: a segmentation fault occurred if there was an "index"
+directive with variables and the first index name was without
+variables; the bug had appeared in 0.1.29.
+Changes with nginx 0.3.61                                        28 Aug 2006
+*) Change: now the "tcp_nodelay" directive is turned on by default.
+*) Feature: the "msie_refresh" directive.
+*) Feature: the "recursive_error_pages" directive.
+*) Bugfix: the "rewrite" directive returned incorrect redirect, if the
+redirect had the captured escaped symbols from original URI.
+Changes with nginx 0.3.60                                        18 Aug 2006
+*) Bugfix: a worker process may got caught in an endless loop while an
+error redirection; the bug had appeared in 0.3.59.
+Changes with nginx 0.3.59                                        16 Aug 2006
+*) Feature: now is possible to do several redirection using the
+"error_page" directive.
+*) Bugfix: the "dav_access" directive did not support three parameters.
+*) Bugfix: the "error_page" directive did not changes the "Content-Type"
+header line after the "X-Accel-Redirect" was used; the bug had
+appeared in 0.3.58.
+Changes with nginx 0.3.58                                        14 Aug 2006
+*) Feature: the "error_page" directive supports the variables.
+*) Change: now the procfs interface instead of sysctl is used on Linux.
+*) Change: now the "Content-Type" header line is inherited from first
+response when the "X-Accel-Redirect" was used.
+*) Bugfix: the "error_page" directive did not redirect the 413 error.
+*) Bugfix: the trailing "?" did not remove old arguments if no new
+arguments were added to a rewritten URI.
+*) Bugfix: nginx could not run on 64-bit FreeBSD 7.0-CURRENT.
+Changes with nginx 0.3.57                                        09 Aug 2006
+*) Feature: the $ssl_client_serial variable.
+*) Bugfix: in the "!-e" operator of the "if" directive.
+Thanks to Andrian Budanstov.
+*) Bugfix: while a client certificate verification nginx did not send to
+a client the required certificates information.
+*) Bugfix: the $document_root variable did not support the variables in
+the "root" directive.
+Changes with nginx 0.3.56                                        04 Aug 2006
+*) Feature: the "dav_access" directive.
+*) Feature: the "if" directive supports the "-d", "!-d", "-e", "!-e",
+"-x", and "!-x" operators.
+*) Bugfix: a segmentation fault occurred if a request returned a
+redirect and some sent to client header lines were logged in the
+access log.
+Changes with nginx 0.3.55                                        28 Jul 2006
+*) Feature: the "stub" parameter in the "include" SSI command.
+*) Feature: the "block" SSI command.
+*) Feature: the unicode2nginx script was added to contrib.
+*) Bugfix: if a "root" was specified by variable only, then the root was
+relative to a server prefix.
+*) Bugfix: if the request contained "//" or "/./" and escaped symbols
+after them, then the proxied request was sent unescaped.
+*) Bugfix: the $r->header_in("Cookie") of the ngx_http_perl_module now
+returns all "Cookie" header lines.
+*) Bugfix: a segmentation fault occurred if
+"client_body_in_file_only on" was used and nginx switched to a next
+upstream.
+*) Bugfix: on some condition while reconfiguration character codes
+inside the "charset_map" may be treated invalid; the bug had appeared
+in 0.3.50.
+Changes with nginx 0.3.54                                        11 Jul 2006
+*) Feature: nginx now logs the subrequest information to the error log.
+*) Feature: the "proxy_next_upstream", "fastcgi_next_upstream", and
+"memcached_next_upstream" directives support the "off" parameter.
+*) Feature: the "debug_connection" directive supports the CIDR address
+form.
+*) Bugfix: if a response of proxied server or FastCGI server was
+converted from UTF-8 or back, then it may be transferred incomplete.
+*) Bugfix: the $upstream_response_time variable had the time of the
+first request to a backend only.
+*) Bugfix: nginx could not be built on amd64 platform; the bug had
+appeared in 0.3.53.
+Changes with nginx 0.3.53                                        07 Jul 2006
+*) Change: the "add_header" directive adds the string to 204, 301, and
+302 responses.
+*) Feature: the "server" directive in the "upstream" context supports
+the "weight" parameter.
+*) Feature: the "server_name" directive supports the "*" wildcard.
+*) Feature: nginx supports the request body size more than 2G.
+*) Bugfix: if a client was successfully authorized using "satisfy_any
+on", then anyway the message "access forbidden by rule" was written
+in the log.
+*) Bugfix: the "PUT" method may erroneously not create a file and return
+the 409 code.
+*) Bugfix: if the IMAP/POP3 backend returned an error, then nginx
+continued proxying anyway.
+Changes with nginx 0.3.52                                        03 Jul 2006
+*) Change: the ngx_http_index_module behavior for the "POST /" requests
+is reverted to the 0.3.40 version state: the module now does not
+return the 405 error.
+*) Bugfix: the worker process may got caught in an endless loop if the
+limit rate was used; the bug had appeared in 0.3.37.
+*) Bugfix: ngx_http_charset_module logged "unknown charset" alert, even
+if the recoding was not needed; the bug had appeared in 0.3.50.
+*) Bugfix: if a code response of the PUT request was 409, then a
+temporary file was not removed.
+Changes with nginx 0.3.51                                        30 Jun 2006
+*) Bugfix: the "<" symbols might disappeared some conditions in the SSI;
+the bug had appeared in 0.3.50.
+Changes with nginx 0.3.50                                        28 Jun 2006
+*) Change: the "proxy_redirect_errors" and "fastcgi_redirect_errors"
+directives was renamed to the "proxy_intercept_errors" and
+"fastcgi_intercept_errors" directives.
+*) Feature: the ngx_http_charset_module supports the recoding from the
+single byte encodings to the UTF-8 encoding and back.
+*) Feature: the "X-Accel-Charset" response header line is supported in
+proxy and FastCGI mode.
+*) Bugfix: the "\" escape symbol in the "\"" and "\'" pairs in the SSI
+command was removed only if the command also has the "$" symbol.
+*) Bugfix: the "<!--" string might be added on some conditions in the
+SSI after inclusion.
+*) Bugfix: if the "Content-Length: 0" header line was in response, then
+in nonbuffered proxying mode the client connection was not closed.
+Changes with nginx 0.3.49                                        31 May 2006
+*) Bugfix: in the "set" directive.
+*) Bugfix: if two or more FastCGI subrequests was in SSI, then first
+subrequest output was included instead of second and following
+subrequests.
+Changes with nginx 0.3.48                                        29 May 2006
+*) Change: now the ngx_http_charset_module works for subrequests, if the
+response has no "Content-Type" header line.
+*) Bugfix: if the "proxy_pass" directive has no URI part, then the
+"proxy_redirect default" directive add the unnecessary slash in start
+of the rewritten redirect.
+*) Bugfix: the internal redirect always transform client's HTTP method
+to GET, now the transformation is made for the "X-Accel-Redirect"
+redirects only and if the method is not HEAD; the bug had appeared in
+0.3.42.
+*) Bugfix: the ngx_http_perl_module could not be built, if the perl was
+built with the threads support; the bug had appeared in 0.3.46.
+Changes with nginx 0.3.47                                        23 May 2006
+*) Feature: the "upstream" directive.
+*) Change: now the "\" escape symbol in the "\"" and "\'" pairs in the
+SSI command is always removed.
+Changes with nginx 0.3.46                                        11 May 2006
+*) Feature: the "proxy_hide_header", "proxy_pass_header",
+"fastcgi_hide_header", and "fastcgi_pass_header" directives.
+*) Change: the "proxy_pass_x_powered_by", "fastcgi_x_powered_by", and
+"proxy_pass_server" directives were canceled.
+*) Feature: the "X-Accel-Buffering" response header line is supported in
+proxy mode.
+*) Bugfix: the reconfiguration bug and memory leaks in the
+ngx_http_perl_module.
+Changes with nginx 0.3.45                                        06 May 2006
+*) Feature: the "ssl_verify_client", "ssl_verify_depth", and
+"ssl_client_certificate" directives.
+*) Change: the $request_method variable now returns the main request
+method.
+*) Change: the &deg; symbol codes were changed in koi-win conversion
+table.
+*) Feature: the euro and N symbols were added to koi-win conversion
+table.
+*) Bugfix: if nginx distributed the requests among several backends and
+some backend failed, then requests intended for this backend was
+directed to one live backend only instead of being distributed among
+the rest.
+Changes with nginx 0.3.44                                        04 May 2006
+*) Feature: the "wait" parameter in the "include" SSI command.
+*) Feature: the Ukrainian and Byelorussian characters were added to
+koi-win conversion table.
+*) Bugfix: in the SSI.
+Changes with nginx 0.3.43                                        26 Apr 2006
+*) Bugfix: in the SSI.
+Changes with nginx 0.3.42                                        26 Apr 2006
+*) Feature: the "bind" option of the "listen" directive in IMAP/POP3
+proxy.
+*) Bugfix: if the same capture in the "rewrite" directive was used more
+then once.
+*) Bugfix: the $sent_http_content_type, $sent_http_content_length,
+$sent_http_last_modified, $sent_http_connection,
+$sent_http_keep_alive, and $sent_http_transfer_encoding variables
+were not written to access log.
+*) Bugfix: the $sent_http_cache_control returned value of the single
+"Cache-Control" response header line.
+Changes with nginx 0.3.41                                        21 Apr 2006
+*) Feature: the -v switch.
+*) Bugfix: the segmentation fault may occurred if the SSI page has
+remote subrequests.
+*) Bugfix: in FastCGI handling.
+*) Bugfix: if the perl modules path was not set using
+--with-perl_modules_path=PATH or the "perl_modules", then the
+segmentation fault was occurred.
+Changes with nginx 0.3.40                                        19 Apr 2006
+*) Feature: the ngx_http_dav_module supports the MKCOL method.
+*) Feature: the "create_full_put_path" directive.
+*) Feature: the "$limit_rate" variable.
+Changes with nginx 0.3.39                                        17 Apr 2006
+*) Feature: the "uninitialized_variable_warn" directive; the logging
+level of the "uninitialized variable" message was lowered from
+"alert" to "warn".
+*) Feature: the "override_charset" directive.
+*) Change: now if the unknown variable is used in the "echo" and "if
+expr='$name'" SSI-commands, then the "unknown variable" message is
+not logged.
+*) Bugfix: the active connection counter increased on the exceeding of
+the connection limit specified by the "worker_connections" directive;
+the bug had appeared in 0.2.0.
+*) Bugfix: the limit rate might not work on some condition; the bug had
+appeared in 0.3.38.
+Changes with nginx 0.3.38                                        14 Apr 2006
+*) Feature: the ngx_http_dav_module.
+*) Change: the ngx_http_perl_module optimizations.
+Thanks to Sergey Skvortsov.
+*) Feature: the ngx_http_perl_module supports the $r->request_body_file
+method.
+*) Feature: the "client_body_in_file_only" directive.
+*) Workaround: now on disk overflow nginx tries to write access logs
+once a second only.
+Thanks to Anton Yuzhaninov and Maxim Dounin.
+*) Bugfix: now the "limit_rate" directive more precisely limits rate if
+rate is more than 100 Kbyte/s.
+Thanks to ForJest.
+*) Bugfix: now the IMAP/POP3 proxy escapes the "\r" and "\n" symbols in
+login and password to pass authorization server.
+Thanks to Maxim Dounin.
+Changes with nginx 0.3.37                                        07 Apr 2006
+*) Feature: the "limit_except" directive.
+*) Feature: the "if" directive supports the "!~", "!~*", "-f", and "!-f"
+operators.
+*) Feature: the ngx_http_perl_module supports the $r->request_body
+method.
+*) Bugfix: in the ngx_http_addition_filter_module.
+Changes with nginx 0.3.36                                        05 Apr 2006
+*) Feature: the ngx_http_addition_filter_module.
+*) Feature: the "proxy_pass" and "fastcgi_pass" directives may be used
+inside the "if" block.
+*) Feature: the "proxy_ignore_client_abort" and
+"fastcgi_ignore_client_abort" directives.
+*) Feature: the "$request_completion" variable.
+*) Feature: the ngx_http_perl_module supports the $r->request_method and
+$r->remote_addr.
+*) Feature: the ngx_http_ssi_module supports the "elif" command.
+*) Bugfix: the "\/" string in the expression of the "if" command of the
+ngx_http_ssi_module was treated incorrectly.
+*) Bugfix: in the regular expressions in the "if" command of the
+ngx_http_ssi_module.
+*) Bugfix: if the relative path was specified in the
+"client_body_temp_path", "proxy_temp_path", "fastcgi_temp_path", and
+"perl_modules" directives, then the directory was used relatively to
+a current path but not to a server prefix.
+Changes with nginx 0.3.35                                        22 Mar 2006
+*) Bugfix: the accept-filter and the TCP_DEFER_ACCEPT option were set
+for first "listen" directive only; the bug had appeared in 0.3.31.
+*) Bugfix: in the "proxy_pass" directive without the URI part in a
+subrequest.
+Changes with nginx 0.3.34                                        21 Mar 2006
+*) Feature: the "add_header" directive supports the variables.
+Changes with nginx 0.3.33                                        15 Mar 2006
+*) Feature: the "http_503" parameter of the "proxy_next_upstream" or
+"fastcgi_next_upstream" directives.
+*) Bugfix: ngx_http_perl_module did not work with inlined in the
+configuration code, if it was not started with the "sub" word.
+*) Bugfix: in the "post_action" directive.
+Changes with nginx 0.3.32                                        11 Mar 2006
+*) Bugfix: the debug logging on startup and reconfiguration time was
+removed; the bug had appeared in 0.3.31.
+Changes with nginx 0.3.31                                        10 Mar 2006
+*) Change: now nginx passes the malformed proxied backend responses.
+*) Feature: the "listen" directives support the address in the "*:port"
+form.
+*) Feature: the EVFILER_TIMER support in MacOSX 10.4.
+*) Workaround: for MacOSX 64-bit kernel kqueue millisecond timeout bug.
+Thanks to Andrei Nigmatulin.
+*) Bugfix: if there were several "listen" directives listening one
+various addresses inside one server, then server names like
+"*.domain.tld" worked for first address only; the bug had appeared in
+0.3.18.
+*) Bugfix: if the HTTPS protocol was used in the "proxy_pass" directive
+and the request body was in temporary file then the request was not
+transferred.
+*) Bugfix: perl 5.8.8 compatibility.
+Changes with nginx 0.3.30                                        22 Feb 2006
+*) Change: the ECONNABORTED error log level was changed to "error" from
+"crit".
+*) Bugfix: the ngx_http_perl_module could not be build without the
+ngx_http_ssi_filter_module.
+*) Bugfix: nginx could not be built on i386 platform, if the PIC was
+used; the bug had appeared in 0.3.27.
+Changes with nginx 0.3.29                                        20 Feb 2006
+*) Feature: now nginx uses less memory, if PHP in FastCGI mode sends
+many warnings before the response.
+*) Bugfix: the "Transfer-Encoding: chunked" header line was issued in
+the 204 responses for the HTTP/1.1 requests.
+*) Bugfix: nginx returned the 502 response, if the complete response
+header lines were transferred in a separate FastCGI records.
+*) Bugfix: if the proxied URI was specified in the "post_action"
+directive, then it ran only after a successful completion of a
+request.
+Changes with nginx 0.3.28                                        16 Feb 2006
+*) Feature: the "restrict_host_names" directive was canceled.
+*) Feature: the --with-cpu-opt=ppc64 configuration parameter.
+*) Bugfix: on some condition the proxied connection with a client was
+terminated prematurely.
+Thanks to Vladimir Shutoff.
+*) Bugfix: the "X-Accel-Limit-Rate" header line was not taken into
+account if the request was redirected using the "X-Accel-Redirect"
+header line.
+*) Bugfix: the "post_action" directive ran only after a successful
+completion of a request.
+*) Bugfix: the proxied response body generated by the "post_action"
+directive was transferred to a client.
+Changes with nginx 0.3.27                                        08 Feb 2006
+*) Change: the "variables_hash_max_size" and
+"variables_hash_bucket_size" directives.
+*) Feature: the $body_bytes_sent variable can be used not only in the
+"log_format" directive.
+*) Feature: the $ssl_protocol and $ssl_cipher variables.
+*) Feature: the cache line size detection for widespread CPUs at start
+time.
+*) Feature: now the "accept_mutex" directive is supported using fcntl(2)
+on platforms different from i386, amd64, sparc64, and ppc.
+*) Feature: the "lock_file" directive and the --with-lock-path=PATH
+autoconfiguration directive.
+*) Bugfix: if the HTTPS protocol was used in the "proxy_pass" directive
+then the requests with the body was not transferred.
+Changes with nginx 0.3.26                                        03 Feb 2006
+*) Change: the "optimize_host_names" directive was renamed to the
+"optimize_server_names".
+*) Bugfix: if in the "proxy_pass" directive was no the URI part, then
+the main request URI was transferred to a backend while proxying the
+SSI subrequest.
+Changes with nginx 0.3.25                                        01 Feb 2006
+*) Bugfix: the segmentation fault was occurred on start or while
+reconfiguration if there was invalid configuration; the bug had
+appeared in 0.3.24.
+Changes with nginx 0.3.24                                        01 Feb 2006
+*) Workaround: for bug in FreeBSD kqueue.
+*) Bugfix: now a response generated by the "post_action" directive is
+not transferred to a client.
+*) Bugfix: the memory leaks were occurring if many log files were used.
+*) Bugfix: the first "proxy_redirect" directive was working inside one
+location.
+*) Bugfix: on 64-bit platforms segmentation fault may occurred on start
+if the many names were used in the "server_name" directives; the bug
+had appeared in 0.3.18.
+Changes with nginx 0.3.23                                        24 Jan 2006
+*) Feature: the "optimize_host_names" directive.
+*) Bugfix: in using of the variables in the "path" and "alias"
+directives.
+*) Bugfix: the ngx_http_perl_module was incorrectly built on Linux and
+Solaris.
+Changes with nginx 0.3.22                                        17 Jan 2006
+*) Feature: the ngx_http_perl_module supports the $r->args and
+$r->unescape methods.
+*) Feature: the method $r->query_string of ngx_http_perl_module was
+canceled.
+*) Bugfix: segmentation fault was occurred if the "none" or "blocked"
+values was specified in the "valid_referers" directive; the bug had
+appeared in 0.3.18.
+Changes with nginx 0.3.21                                        16 Jan 2006
+*) Feature: the ngx_http_perl_module.
+*) Change: the "valid_referers" directive allows the referrers without
+URI part.
+Changes with nginx 0.3.20                                        11 Jan 2006
+*) Bugfix: in SSI handling.
+*) Bugfix: the ngx_http_memcached_module did not support the keys in the
+"/usr?args" form.
+Changes with nginx 0.3.19                                        28 Dec 2005
+*) Feature: the "path" and "alias" directives support the variables.
+*) Change: now the "valid_referers" directive again checks the URI part.
+*) Bugfix: in SSI handling.
+Changes with nginx 0.3.18                                        26 Dec 2005
+*) Feature: the "server_names" directive supports the ".domain.tld"
+names.
+*) Feature: the "server_names" directive uses the hash for the
+"*.domain.tld" names and more effective hash for usual names.
+*) Change: the "server_names_hash_max_size" and
+"server_names_hash_bucket_size" directives.
+*) Change: the "server_names_hash" and "server_names_hash_threshold"
+directives were canceled.
+*) Feature: the "valid_referers" directive uses the hash site names.
+*) Change: now the "valid_referers" directive checks the site names only
+without the URI part.
+*) Bugfix: some ".domain.tld" names incorrectly processed by the
+ngx_http_map_module.
+*) Bugfix: segmentation fault was occurred if configuration file did not
+exist; the bug had appeared in 0.3.12.
+*) Bugfix: on 64-bit platforms segmentation fault may occurred on start;
+the bug had appeared in 0.3.16.
+Changes with nginx 0.3.17                                        18 Dec 2005
+*) Change: now on Linux configure checks the presence of epoll and
+sendfile64() in kernel.
+*) Feature: the "map" directive supports domain names in the
+".domain.tld" form.
+*) Bugfix: the timeouts were not used in SSL handshake; the bug had
+appeared in 0.2.4.
+*) Bugfix: in the HTTPS protocol in the "proxy_pass" directive.
+*) Bugfix: when the HTTPS protocol was used in the "proxy_pass"
+directive the port 80 was used by default.
+Changes with nginx 0.3.16                                        16 Dec 2005
+*) Feature: the ngx_http_map_module.
+*) Feature: the "types_hash_max_size" and "types_hash_bucket_size"
+directives.
+*) Feature: the "ssi_value_length" directive.
+*) Feature: the "worker_rlimit_core" directive.
+*) Workaround: the connection number in logs was always 1 if nginx was
+built by the icc 8.1 or 9.0 compilers with optimization for
+Pentium 4.
+*) Bugfix: the "config timefmt" SSI command set incorrect time format.
+*) Bugfix: nginx did not close connection to IMAP/POP3 backend for the
+SSL connections; the bug had appeared in 0.3.13.
+Thanks to Rob Mueller.
+*) Bugfix: segmentation fault may occurred in at SSL shutdown; the bug
+had appeared in 0.3.13.
+Changes with nginx 0.3.15                                        07 Dec 2005
+*) Feature: the new 444 code of the "return" directive to close
+connection.
+*) Feature: the "so_keepalive" directive in IMAP/POP3 proxy.
+*) Bugfix: if there are unclosed connection nginx now calls abort() only
+on graceful quit and active "debug_points" directive.
+Changes with nginx 0.3.14                                        05 Dec 2005
+*) Bugfix: in the 304 response the body was transferred; the bug had
+appeared in 0.3.13.
+Changes with nginx 0.3.13                                        05 Dec 2005
+*) Feature: the IMAP/POP3 proxy supports STARTTLS and STLS.
+*) Bugfix: the IMAP/POP3 proxy did not work with the select, poll, and
+/dev/poll methods.
+*) Bugfix: in SSI handling.
+*) Bugfix: now Solaris sendfilev() is not used to transfer the client
+request body to FastCGI-server via the unix domain socket.
+*) Bugfix: the "auth_basic" directive did not disable the authorization;
+the bug had appeared in 0.3.11.
+Changes with nginx 0.3.12                                        26 Nov 2005
+*) Security: if nginx was built with the ngx_http_realip_module and the
+"satisfy_any on" directive was used, then access and authorization
+directives did not work. The ngx_http_realip_module was not built and
+is not built by default.
+*) Change: the "$time_gmt" variable name was changed to "$time_local".
+*) Change: the "proxy_header_buffer_size" and
+"fastcgi_header_buffer_size" directives was renamed to the
+"proxy_buffer_size" and "fastcgi_buffer_size" directives.
+*) Feature: the ngx_http_memcached_module.
+*) Feature: the "proxy_buffering" directive.
+*) Bugfix: the changes in accept mutex handling when the "rtsig" method
+was used; the bug had appeared in 0.3.0.
+*) Bugfix: if the client sent the "Transfer-Encoding: chunked" header
+line, then nginx returns the 411 error.
+*) Bugfix: if the "auth_basic" directive was inherited from the http
+level, then the realm in the "WWW-Authenticate" header line was
+without the "Basic realm" text.
+*) Bugfix: if the "combined" format was explicitly specified in the
+"access_log" directive, then the empty lines was written to the log;
+the bug had appeared in 0.3.8.
+*) Bugfix: nginx did not run on the sparc platform under any OS except
+Solaris.
+*) Bugfix: now it is not necessary to place space between the quoted
+string and closing bracket in the "if" directive.
+Changes with nginx 0.3.11                                        15 Nov 2005
+*) Bugfix: nginx did not pass the client request headers and body while
+proxying; the bug had appeared in 0.3.10.
+Changes with nginx 0.3.10                                        15 Nov 2005
+*) Change: the "valid_referers" directive and the "$invalid_referer"
+variable were moved to the new ngx_http_referer_module from the
+ngx_http_rewrite_module.
+*) Change: the "$apache_bytes_sent" variable name was changed to
+"$body_bytes_sent".
+*) Feature: the "$sent_http_..." variables.
+*) Feature: the "if" directive supports the "=" and "!=" operations.
+*) Feature: the "proxy_pass" directive supports the HTTPS protocol.
+*) Feature: the "proxy_set_body" directive.
+*) Feature: the "post_action" directive.
+*) Feature: the ngx_http_empty_gif_module.
+*) Feature: the "worker_cpu_affinity" directive for Linux.
+*) Bugfix: the "rewrite" directive did not unescape URI part in
+redirect, now it is unescaped except the %00-%25 and %7F-%FF
+characters.
+*) Bugfix: nginx could not be built by the icc 9.0 compiler.
+*) Bugfix: if the SSI was enabled for zero size static file, then the
+chunked response was encoded incorrectly.
+Changes with nginx 0.3.9                                         10 Nov 2005
+*) Bugfix: nginx considered URI as unsafe if two any symbols was between
+two slashes; the bug had appeared in 0.3.8.
+Changes with nginx 0.3.8                                         09 Nov 2005
+*) Security: nginx now checks URI got from a backend in
+"X-Accel-Redirect" header line or in SSI file for the "/../" paths
+and zeroes.
+*) Change: nginx now does not treat the empty user name in the
+"Authorization" header line as valid one.
+*) Feature: the "ssl_session_timeout" directives of the
+ngx_http_ssl_module and ngx_imap_ssl_module.
+*) Feature: the "auth_http_header" directive of the
+ngx_imap_auth_http_module.
+*) Feature: the "add_header" directive.
+*) Feature: the ngx_http_realip_module.
+*) Feature: the new variables to use in the "log_format" directive:
+$bytes_sent, $apache_bytes_sent, $status, $time_gmt, $uri,
+$request_time, $request_length, $upstream_status,
+$upstream_response_time, $gzip_ratio, $uid_got, $uid_set,
+$connection, $pipe, and $msec. The parameters in the "%name" form
+will be canceled soon.
+*) Change: now the false variable values in the "if" directive are the
+empty string "" and string starting with "0".
+*) Bugfix: while using proxied or FastCGI-server nginx may leave
+connections and temporary files with client requests in open state.
+*) Bugfix: the worker processes did not flush the buffered logs on
+graceful exit.
+*) Bugfix: if the request URI was changes by the "rewrite" directive and
+the request was proxied in location given by regular expression, then
+the incorrect request was transferred to backend; the bug had
+appeared in 0.2.6.
+*) Bugfix: the "expires" directive did not remove the previous "Expires"
+header.
+*) Bugfix: nginx may stop to accept requests if the "rtsig" method and
+several worker processes were used.
+*) Bugfix: the "\"" and "\'" escape symbols were incorrectly handled in
+SSI commands.
+*) Bugfix: if the response was ended just after the SSI command and
+gzipping was used, then the response did not transferred complete or
+did not transferred at all.
+Changes with nginx 0.3.7                                         27 Oct 2005
+*) Feature: the "access_log" supports the "buffer=" parameter.
+*) Bugfix: nginx could not be built on platforms different from i386,
+amd64, sparc, and ppc; the bug had appeared in 0.3.2.
+Changes with nginx 0.3.6                                         24 Oct 2005
+*) Change: now the IMAP/POP3 proxy do not send the empty login to
+authorization server.
+*) Feature: the "log_format" supports the variables in the $name form.
+*) Bugfix: if at least in one server was no the "listen" directive, then
+nginx did not listen on the 80 port; the bug had appeared in 0.3.3.
+*) Bugfix: if the URI part is omitted in "proxy_pass" directive, the 80
+port was always used.
+Changes with nginx 0.3.5                                         21 Oct 2005
+*) Bugfix: the segmentation fault may occurred if the IMAP/POP3 login
+was changed by authorization server; the bug had appeared in 0.2.2.
+*) Bugfix: the accept mutex did not work and all connections were
+handled by one process; the bug had appeared in 0.3.3.
+*) Bugfix: the timeout did not work if the "rtsig" method and the
+"timer_resolution" directive were used.
+Changes with nginx 0.3.4                                         19 Oct 2005
+*) Bugfix: nginx could not be built on Linux 2.4+ and MacOS X; the bug
+had appeared in 0.3.3.
+Changes with nginx 0.3.3                                         19 Oct 2005
+*) Change: the "bl" and "af" parameters of the "listen" directive was
+renamed to the "backlog" and "accept_filter".
+*) Feature: the "rcvbuf" and "sndbuf" parameters of the "listen"
+directive.
+*) Change: the "$msec" log parameter does not require now the additional
+the gettimeofday() system call.
+*) Feature: the -t switch now tests the "listen" directives.
+*) Bugfix: if the invalid address was specified in the "listen"
+directive, then after the -HUP signal nginx left an open socket in
+the CLOSED state.
+*) Bugfix: the mime type may be incorrectly set to default value for
+index file with variable in the name; the bug had appeared in 0.3.0.
+*) Feature: the "timer_resolution" directive.
+*) Feature: the millisecond "$upstream_response_time" log parameter.
+*) Bugfix: a temporary file with client request body now is removed just
+after the response header was transferred to a client.
+*) Bugfix: OpenSSL 0.9.6 compatibility.
+*) Bugfix: the SSL certificate and key file paths could not be relative.
+*) Bugfix: the "ssl_prefer_server_ciphers" directive did not work in the
+ngx_imap_ssl_module.
+*) Bugfix: the "ssl_protocols" directive allowed to specify the single
+protocol only.
+Changes with nginx 0.3.2                                         12 Oct 2005
+*) Feature: the Sun Studio 10 C compiler support.
+*) Feature: the "proxy_upstream_max_fails",
+"proxy_upstream_fail_timeout", "fastcgi_upstream_max_fails", and
+"fastcgi_upstream_fail_timeout" directives.
+Changes with nginx 0.3.1                                         10 Oct 2005
+*) Bugfix: the segmentation fault occurred when the signal queue
+overflowed if the "rtsig" method was used; the bug had appeared in
+0.2.0.
+*) Change: correct handling of the "\\", "\"", "\'", and "\$" pairs in
+SSI.
+Changes with nginx 0.3.0                                         07 Oct 2005
+*) Change: the 10-days live time limit of worker process was eliminated.
+The limit was introduced because of millisecond timers overflow.
+Changes with nginx 0.2.6                                         05 Oct 2005
+*) Change: while using load-balancing the time before the failed backend
+retry was decreased from 60 to 10 seconds.
+*) Change: the "proxy_pass_unparsed_uri" was canceled, the original URI
+now passed, if the URI part is omitted in "proxy_pass" directive.
+*) Feature: the "error_page" directive supports redirects and allows
+more flexible to change an error code.
+*) Change: the charset in the "Content-Type" header line now is ignored
+in proxied subrequests.
+*) Bugfix: if the URI was changed in the "if" block and request did not
+found new configuration, then the ngx_http_rewrite_module rules ran
+again.
+*) Bugfix: if the "set" directive set the ngx_http_geo_module variable
+in some configuration part, the this variable was not available in
+other configuration parts and the "using uninitialized variable"
+error was occurred; the bug had appeared in 0.2.2.
+Changes with nginx 0.2.5                                         04 Oct 2005
+*) Change: the duplicate value of the ngx_http_geo_module variable now
+causes the warning and changes old value.
+*) Feature: the ngx_http_ssi_module supports the "set" command.
+*) Feature: the ngx_http_ssi_module supports the "file" parameter in the
+"include" command.
+*) Feature: the ngx_http_ssi_module supports the variable value
+substitutions in expressions of the "if" command.
+Changes with nginx 0.2.4                                         03 Oct 2005
+*) Feature: the ngx_http_ssi_module supports "$var=text", "$var!=text",
+"$var=/text/", and "$var!=/text/" expressions in the "if" command.
+*) Bugfix: in proxying location without trailing slash; the bug had
+appeared in 0.1.44.
+*) Bugfix: the segmentation fault may occurred if the "rtsig" method was
+used; the bug had appeared in 0.2.0.
+Changes with nginx 0.2.3                                         30 Sep 2005
+*) Bugfix: nginx could not be built without the --with-debug option; the
+bug had appeared in 0.2.2.
+Changes with nginx 0.2.2                                         30 Sep 2005
+*) Feature: the "config errmsg" command of the ngx_http_ssi_module.
+*) Change: the ngx_http_geo_module variables can be overridden by the
+"set" directive.
+*) Feature: the "ssl_protocols" and "ssl_prefer_server_ciphers"
+directives of the ngx_http_ssl_module and ngx_imap_ssl_module.
+*) Bugfix: the ngx_http_autoindex_module did not show correctly the long
+file names;
+*) Bugfix: the ngx_http_autoindex_module now do not show the files
+starting by dot.
+*) Bugfix: if the SSL handshake failed then another connection may be
+closed too.
+Thanks to Rob Mueller.
+*) Bugfix: the export versions of MSIE 5.x could not connect via HTTPS.
+Changes with nginx 0.2.1                                         23 Sep 2005
+*) Bugfix: if all backend using in load-balancing failed after one
+error, then nginx may got caught in an endless loop; the bug had
+appeared in 0.2.0.
+Changes with nginx 0.2.0                                         23 Sep 2005
+*) The pid-file names used during online upgrade was changed and now is
+not required a manual rename operation. The old master process adds
+the ".oldbin" suffix to its pid-file and executes a new binary file.
+The new master process creates usual pid-file without the ".newbin"
+suffix. If the master process exits, then old master process renames
+back its pid-file with the ".oldbin" suffix to the pid-file without
+suffix.
+*) Change: the "worker_connections" directive, new name of the
+"connections" directive; now the directive specifies maximum number
+of connections, but not maximum socket descriptor number.
+*) Feature: SSL supports the session cache inside one worker process.
+*) Feature: the "satisfy_any" directive.
+*) Change: the ngx_http_access_module and ngx_http_auth_basic_module do
+not run for subrequests.
+*) Feature: the "worker_rlimit_nofile" and "worker_rlimit_sigpending"
+directives.
+*) Bugfix: if all backend using in load-balancing failed after one
+error, then nginx did not try do connect to them during 60 seconds.
+*) Bugfix: in IMAP/POP3 command argument parsing.
+Thanks to Rob Mueller.
+*) Bugfix: errors while using SSL in IMAP/POP3 proxy.
+*) Bugfix: errors while using SSI and gzipping.
+*) Bugfix: the "Expires" and "Cache-Control" header lines were omitted
+from the 304 responses.
+Thanks to Alexandr Kukushkin.
+Changes with nginx 0.1.45                                        08 Sep 2005
+*) Change: the "ssl_engine" directive was canceled in the
+ngx_http_ssl_module and now is introduced at global level.
+*) Bugfix: the responses with SSI subrequests did not transferred via
+SSL connection.
+*) Various bug fixes in the IMAP/POP3 proxy.
+Changes with nginx 0.1.44                                        06 Sep 2005
+*) Feature: the IMAP/POP3 proxy supports SSL.
+*) Feature: the "proxy_timeout" directive of the ngx_imap_proxy_module.
+*) Feature: the "userid_mark" directive.
+*) Feature: the $remote_user variable value is determined independently
+of authorization use.
+Changes with nginx 0.1.43                                        30 Aug 2005
+*) Feature: the listen(2) backlog in the "listen" directive can be
+changed using the -HUP signal.
+*) Feature: the geo2nginx.pl script was added to contrib.
+*) Change: the FastCGI parameters with the empty values now are passed
+to a server.
+*) Bugfix: the segmentation fault occurred or the worker process may got
+caught in an endless loop if the proxied or FastCGI server sent the
+"Cache-Control" header line and the "expires" directive was used; in
+the proxied mode the bug had appeared in 0.1.29.
+Changes with nginx 0.1.42                                        23 Aug 2005
+*) Bugfix: if the request URI had a zero length after the processing in
+the ngx_http_proxy_module, then the segmentation fault or bus error
+occurred in the ngx_http_proxy_module.
+*) Bugfix: the "limit_rate" directive did not work inside the "if"
+block; the bug had appeared in 0.1.38.
+Changes with nginx 0.1.41                                        25 Jul 2005
+*) Bugfix: if the variable was used in the configuration file, then it
+can not be used in SSI.
+Changes with nginx 0.1.40                                        22 Jul 2005
+*) Bugfix: if a client sent too long header line, then the request
+information did not logged in the error log.
+*) Bugfix: the "Set-Cookie" header line was not transferred when the
+"X-Accel-Redirect" was used; the bug had appeared in 0.1.39.
+*) Bugfix: the "Content-Disposition" header line was not transferred
+when the "X-Accel-Redirect" was used.
+*) Bugfix: the master process did not close the listen socket on the
+SIGQUIT signal.
+*) Bugfix: after on-line upgrade on Linux and Solaris the process name
+became shorter in the "ps" command.
+Changes with nginx 0.1.39                                        14 Jul 2005
+*) The changes in the ngx_http_charset_module: the "default_charset"
+directive was canceled; the "charset" directive sets the response
+charset; the "source_charset" directive sets the source charset only.
+*) Bugfix: the backend "WWW-Authenticate" header line did not
+transferred while the 401 response code redirecting.
+*) Bugfix: the ngx_http_proxy_module and ngx_http_fastcgi_module may
+close a connection before anything was transferred to a client; the
+bug had appeared in 0.1.38.
+*) Workaround: the Linux glibc crypt_r() initialization bug.
+*) Bugfix: the ngx_http_ssi_module did not support the relative URI in
+the "include virtual" command.
+*) Bugfix: if the backend response had the "Location" header line and
+nginx should not rewrite this line, then the 500 code response body
+was transferred; the bug had appeared in 0.1.29.
+*) Bugfix: some directives of the ngx_http_proxy_module and
+ngx_http_fastcgi_module were not inherited from the server to the
+location level; the bug had appeared in 0.1.29.
+*) Bugfix: the ngx_http_ssl_module did not support the certificate
+chain.
+*) Bugfix: the ngx_http_autoindex_module did not show correctly the long
+file names; the bug had appeared in 0.1.38.
+*) Bugfixes in IMAP/POP3 proxy in interaction with a backend at the
+login state.
+Changes with nginx 0.1.38                                        08 Jul 2005
+*) Feature: the "limit_rate" directive is supported in proxy and FastCGI
+mode.
+*) Feature: the "X-Accel-Limit-Rate" response header line is supported
+in proxy and FastCGI mode.
+*) Feature: the "break" directive.
+*) Feature: the "log_not_found" directive.
+*) Bugfix: the response status code was not changed when request was
+redirected by the ""X-Accel-Redirect" header line.
+*) Bugfix: the variables set by the "set" directive could not be used in
+SSI.
+*) Bugfix: the segmentation fault may occurred if the SSI page has more
+than one remote subrequest.
+*) Bugfix: nginx treated the backend response as invalid if the status
+line in the header was transferred in two packets; the bug had
+appeared in 0.1.29.
+*) Feature: the "ssi_types" directive.
+*) Feature: the "autoindex_exact_size" directive.
+*) Bugfix: the ngx_http_autoindex_module did not support the long file
+names in UTF-8.
+*) Feature: the IMAP/POP3 proxy.
+Changes with nginx 0.1.37                                        23 Jun 2005
+*) Change: now the "\n" is added to the end of the "nginx.pid" file.
+*) Bugfix: the responses may be transferred not completely, if many
+parts or the big parts were included by SSI.
+*) Bugfix: if all backends had returned the 404 response and the
+"http_404" parameter of the "proxy_next_upstream" or
+"fastcgi_next_upstream" directives was used, then nginx started to
+request all backends again.
+Changes with nginx 0.1.36                                        15 Jun 2005
+*) Change: if the request header has duplicate the "Host", "Connection",
+"Content-Length", or "Authorization" lines, then nginx now returns
+the 400 error.
+*) Change: the "post_accept_timeout" directive was canceled.
+*) Feature: the "default", "af=", "bl=", "deferred", and "bind"
+parameters of the "listen" directive.
+*) Feature: the FreeBSD accept filters support.
+*) Feature: the Linux TCP_DEFER_ACCEPT support.
+*) Bugfix: the ngx_http_autoindex_module did not support the file names
+in UTF-8.
+*) Bugfix: the new log file can be rotated by the -USR1 signal only if
+the reconfiguration by the -HUP signal was made twice.
+Changes with nginx 0.1.35                                        07 Jun 2005
+*) Feature: the "working_directory" directive.
+*) Feature: the "port_in_redirect" directive.
+*) Bugfix: the segmentation fault was occurred if the backend response
+header was in several packets; the bug had appeared in 0.1.29.
+*) Bugfix: if more than 10 servers were configured or some server did
+not use the "listen" directive, then the segmentation fault was
+occurred on the start.
+*) Bugfix: the segmentation fault might occur if the response was bigger
+than the temporary file.
+*) Bugfix: nginx returned the 400 response on requests like
+"GET http://www.domain.com/uri HTTP/1.0"; the bug had appeared in
+0.1.28.
+Changes with nginx 0.1.34                                        26 May 2005
+*) Bugfix: the worker process may got caught in an endless loop if the
+big response part were include by SSI.
+*) Bugfix: the variables set by the "set" directive were not available
+in SSI.
+*) Feature: the "autoindex_localtime" directive.
+*) Bugfix: the empty value of the "proxy_set_header" directive forbids
+the client request header line passing.
+Changes with nginx 0.1.33                                        23 May 2005
+*) Bugfix: nginx could not be built with the --without-pcre parameter;
+the bug had appeared in 0.1.29.
+*) Bugfix: 3, 4, 7, and 8 the "proxy_set_header" directives in one level
+cause the bus fault on start up.
+*) Bugfix: the HTTP protocol was specified in the HTTPS redirects.
+*) Bugfix: if the "rewrite" directive used the captures inside the "if"
+directive, then the 500 error code was returned.
+Changes with nginx 0.1.32                                        19 May 2005
+*) Bugfix: the arguments were omitted in the redirects, issued by the
+"rewrite" directive; the bug had appeared in 0.1.29.
+*) Feature: the "if" directive supports the captures in regular
+expressions.
+*) Feature: the "set" directive supports the variables and the captures
+of regular expressions.
+*) Feature: the "X-Accel-Redirect" response header line is supported in
+proxy and FastCGI mode.
+Changes with nginx 0.1.31                                        16 May 2005
+*) Bugfix: the response encrypted by SSL may not transferred complete.
+*) Bugfix: errors while processing FastCGI response by SSI.
+*) Bugfix: errors while using SSI and gzipping.
+*) Bugfix: the redirect with the 301 code was transferred without
+response body; the bug had appeared in 0.1.30.
+Changes with nginx 0.1.30                                        14 May 2005
+*) Bugfix: the worker process may got caught in an endless loop if the
+SSI was used.
+*) Bugfix: the response encrypted by SSL may not transferred complete.
+*) Bugfix: if the length of the response part received at once from
+proxied or FastCGI server was equal to 500, then nginx returns the
+500 response code; in proxy mode the bug had appeared in 0.1.29 only.
+*) Bugfix: nginx did not consider the directives with 8 or 9 parameters
+as invalid.
+*) Feature: the "return" directive can return the 204 response code.
+*) Feature: the "ignore_invalid_headers" directive.
+Changes with nginx 0.1.29                                        12 May 2005
+*) Feature: the ngx_http_ssi_module supports "include virtual" command.
+*) Feature: the ngx_http_ssi_module supports the condition command like
+'if expr="$NAME"' and "else" and "endif" commands. Only one nested
+level is supported.
+*) Feature: the ngx_http_ssi_module supports the DATE_LOCAL and DATE_GMT
+variables and "config timefmt" command.
+*) Feature: the "ssi_ignore_recycled_buffers" directive.
+*) Bugfix: the "echo" command did not show the default value for the
+empty QUERY_STRING variable.
+*) Change: the ngx_http_proxy_module was rewritten.
+*) Feature: the "proxy_redirect", "proxy_pass_request_headers",
+"proxy_pass_request_body", and "proxy_method" directives.
+*) Feature: the "proxy_set_header" directive. The "proxy_x_var" was
+canceled and must be replaced with the proxy_set_header directive.
+*) Change: the "proxy_preserve_host" is canceled and must be replaced
+with the "proxy_set_header Host $host" and the "proxy_redirect off"
+directives, the "proxy_set_header Host $host:$proxy_port" directive
+and the appropriate proxy_redirect directives.
+*) Change: the "proxy_set_x_real_ip" is canceled and must be replaced
+with the "proxy_set_header X-Real-IP $remote_addr" directive.
+*) Change: the "proxy_add_x_forwarded_for" is canceled and must be
+replaced with
+the "proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for"
+directive.
+*) Change: the "proxy_set_x_url" is canceled and must be replaced with
+the "proxy_set_header X-URL http://$host:$server_port$request_uri"
+directive.
+*) Feature: the "fastcgi_param" directive.
+*) Change: the "fastcgi_root", "fastcgi_set_var" and "fastcgi_params"
+directive are canceled and must be replaced with the fastcgi_param
+directives.
+*) Feature: the "index" directive can use the variables.
+*) Feature: the "index" directive can be used at http and server levels.
+*) Change: the last index only in the "index" directive can be absolute.
+*) Feature: the "rewrite" directive can use the variables.
+*) Feature: the "internal" directive.
+*) Feature: the CONTENT_LENGTH, CONTENT_TYPE, REMOTE_PORT, SERVER_ADDR,
+SERVER_PORT, SERVER_PROTOCOL, DOCUMENT_ROOT, SERVER_NAME,
+REQUEST_METHOD, REQUEST_URI, and REMOTE_USER variables.
+*) Change: nginx now passes the invalid lines in a client request
+headers or a backend response header.
+*) Bugfix: if the backend did not transfer response for a long time and
+the "send_timeout" was less than "proxy_read_timeout", then nginx
+returned the 408 response.
+*) Bugfix: the segmentation fault was occurred if the backend sent an
+invalid line in response header; the bug had appeared in 0.1.26.
+*) Bugfix: the segmentation fault may occurred in FastCGI fault
+tolerance configuration.
+*) Bugfix: the "expires" directive did not remove the previous "Expires"
+and "Cache-Control" headers.
+*) Bugfix: nginx did not take into account trailing dot in "Host" header
+line.
+*) Bugfix: the ngx_http_auth_module did not work under Linux.
+*) Bugfix: the rewrite directive worked incorrectly, if the arguments
+were in a request.
+*) Bugfix: nginx could not be built on MacOS X.
+Changes with nginx 0.1.28                                        08 Apr 2005
+*) Bugfix: nginx hogs CPU while proxying the huge files.
+*) Bugfix: nginx could not be built by gcc 4.0 on Linux.
+Changes with nginx 0.1.27                                        28 Mar 2005
+*) Feature: the "blocked" parameter of the "valid_referers" directive.
+*) Change: the errors while handling the request header now logged at
+"info" level. The server name and the "Host" and "Referer" header
+lines also logged.
+*) Change: the "Host" header line is also logged in error log.
+*) Feature: the proxy_pass_unparsed_uri directive. The special handling
+of the "://" symbols in URI, appeared in 0.1.11 version, now is
+canceled.
+*) Bugfix: nginx could not be built on FreeBSD and Linux, if the
+--without-ngx_http_auth_basic_module configuration parameter was
+used.
+Changes with nginx 0.1.26                                        22 Mar 2005
+*) Change: the invalid client header lines are now ignored and logged at
+the info level.
+*) Change: the server name is also logged in error log.
+*) Feature: the ngx_http_auth_basic_module module and the auth_basic and
+auth_basic_user_file directives.
+Changes with nginx 0.1.25                                        19 Mar 2005
+*) Bugfix: nginx did run on Linux parisc.
+*) Feature: nginx now does not start under FreeBSD if the sysctl
+kern.ipc.somaxconn value is too big.
+*) Bugfix: if a request was internally redirected by the
+ngx_http_index_module module to the ngx_http_proxy_module or
+ngx_http_fastcgi_module modules, then the index file was not closed
+after request completion.
+*) Feature: the "proxy_pass" can be used in location with regular
+expression.
+*) Feature: the ngx_http_rewrite_filter_module module supports the
+condition like "if ($HTTP_USER_AGENT ~ MSIE)".
+*) Bugfix: nginx started too slow if the large number of addresses and
+text values were used in the "geo" directive.
+*) Change: a variable name must be declared as "$name" in the "geo"
+directive. The previous variant without "$" is still supported, but
+will be removed soon.
+*) Feature: the "%{VARIABLE}v" logging parameter.
+*) Feature: the "set $name value" directive.
+*) Bugfix: gcc 4.0 compatibility.
+*) Feature: the --with-openssl-opt=OPTIONS autoconfiguration directive.
+Changes with nginx 0.1.24                                        04 Mar 2005
+*) Feature: the ngx_http_ssi_filter_module supports the QUERY_STRING and
+DOCUMENT_URI variables.
+*) Bugfix: the ngx_http_autoindex_module may some times return the 404
+response for existent directory, if this directory was used in
+"alias" directive.
+*) Bugfix: the ngx_http_ssi_filter_module ran incorrectly for large
+responses.
+*) Bugfix: the lack of the "Referer" header line was always accounted as
+valid referrer.
+Changes with nginx 0.1.23                                        01 Mar 2005
+*) Feature: the ngx_http_ssi_filter_module and the ssi,
+ssi_silent_errors, and ssi_min_file_chunk directives. The 'echo
+var="HTTP_..." default=""' and 'echo var="REMOTE_ADDR"' commands are
+supported.
+*) Feature: the %request_time log parameter.
+*) Feature: if the request has no the "Host" header line, then the
+"proxy_preserve_host" directive set this header line to the first
+server name of the "server_name" directive.
+*) Bugfix: nginx could not be built on platforms different from i386,
+amd64, sparc, and ppc; the bug had appeared in 0.1.22.
+*) Bugfix: the ngx_http_autoindex_module now shows the information not
+about the symlink, but about file or directory it points to.
+*) Bugfix: the %apache_length parameter logged the negative length of
+the response header if the no response was transferred to a client.
+Changes with nginx 0.1.22                                        22 Feb 2005
+*) Bugfix: the ngx_http_stub_status_module showed incorrect handled
+connections statistics if the proxying or FastCGI server were used.
+*) Bugfix: the installation paths were incorrectly quoted on Linux and
+Solaris; the bug had appeared in 0.1.21.
+Changes with nginx 0.1.21                                        22 Feb 2005
+*) Bugfix: the ngx_http_stub_status_module showed incorrect statistics
+if "rtsig" method was used or if several worker process ran on SMP.
+*) Bugfix: nginx could not be built by the icc compiler on Linux or if
+the zlib-1.2.x library was building from sources.
+*) Bugfix: nginx could not be built on NetBSD 2.0.
+Changes with nginx 0.1.20                                        17 Feb 2005
+*) Feature: the new "script_filename" and "remote_port" parameters of
+the fastcgi_params directive.
+*) Bugfix: the FastCGI stderr stream was handled incorrectly.
+Changes with nginx 0.1.19                                        16 Feb 2005
+*) Bugfix: now, if request contains the zero, then the 404 error is
+returned for the local requests.
+*) Bugfix: nginx could not be built on NetBSD 2.0.
+*) Bugfix: the timeout may occur while reading of the client request
+body via SSL connections.
+Changes with nginx 0.1.18                                        09 Feb 2005
+*) Workaround: the default values of the devpoll_events and the
+devpoll_changes directives changed from 512 to 32 to be compatible
+with Solaris 10.
+*) Bugfix: the proxy_set_x_var and fastcgi_set_var directives were not
+inherited.
+*) Bugfix: in a redirect rewrite directive arguments were concatenated
+with URI by an "&" rather than a "?".
+*) Bugfix: the lines without trailing ";" in the file being included by
+the ngx_http_geo_module were silently ignored.
+*) Feature: the ngx_http_stub_status_module.
+*) Bugfix: the unknown log format in the access_log directive caused the
+segmentation fault.
+*) Feature: the new "document_root" parameter of the fastcgi_params
+directive.
+*) Feature: the fastcgi_redirect_errors directive.
+*) Feature: the new "break" modifier of the "rewrite" directive allows
+to stop the rewrite/location cycle and sets the current configuration
+to the request.
+Changes with nginx 0.1.17                                        03 Feb 2005
+*) Change: the ngx_http_rewrite_module was rewritten from the scratch.
+Now it is possible to redirect, to return the error codes, to check
+the variables and referrers. The directives can be used inside
+locations. The redirect directive was canceled.
+*) Feature: the ngx_http_geo_module.
+*) Feature: the proxy_set_x_var and fastcgi_set_var directives.
+*) Bugfix: the location configuration with "=" modifier may be used in
+another location.
+*) Bugfix: the correct content type was set only for requests that use
+small caps letters in extension.
+*) Bugfix: if the proxy_pass or fastcgi_pass directives were set in the
+location, and access was denied, and the error was redirected to a
+static page, then the segmentation fault occurred.
+*) Bugfix: if in a proxied "Location" header was a relative URL, then a
+host name and a slash were added to them; the bug had appeared in
+0.1.14.
+*) Bugfix: the system error message was not logged on Linux.
+Changes with nginx 0.1.16                                        25 Jan 2005
+*) Bugfix: if the response were transferred by chunks, then on the HEAD
+request the final chunk was issued.
+*) Bugfix: the "Connection: keep-alive" header were issued, even if the
+keepalive_timeout directive forbade the keep-alive use.
+*) Bugfix: the errors in the ngx_http_fastcgi_module caused the
+segmentation faults.
+*) Bugfix: the compressed response encrypted by SSL may not transferred
+complete.
+*) Bugfix: the TCP-specific TCP_NODELAY, TCP_NOPUSH, and TCP_CORK
+options, are not used for the unix domain sockets.
+*) Feature: the rewrite directive supports the arguments rewriting.
+*) Bugfix: the response code 400 was returned for the POST request with
+the "Content-Length: 0" header; the bug had appeared in 0.1.14.
+Changes with nginx 0.1.15                                        19 Jan 2005
+*) Bugfix: the error while the connecting to the FastCGI server caused
+segmentation fault.
+*) Bugfix: the correct handling of the regular expression, that has
+different number of the captures and substitutions.
+*) Feature: the location, that is passed to the FastCGI server, can be
+regular expression.
+*) Bugfix: the FastCGI's parameter REQUEST_URI is now passed with the
+arguments and in the original state.
+*) Bugfix: the ngx_http_rewrite_module module was required to be built
+to use the regular expressions in locations.
+*) Bugfix: the directive "proxy_preserve_host on" adds port 80 to the
+"Host" headers, if upstream listen on port 80; the bug had appeared
+in 0.1.14.
+*) Bugfix: the same paths in autoconfiguration parameters
+--http-client-body-temp-path=PATH and --http-proxy-temp-path=PATH, or
+--http-client-body-temp-path=PATH and --http-fastcgi-temp-path=PATH
+caused segmentation fault.
+Changes with nginx 0.1.14                                        18 Jan 2005
+*) Feature: the autoconfiguration directives:
+--http-client-body-temp-path=PATH, --http-proxy-temp-path=PATH, and
+--http-fastcgi-temp-path=PATH
+*) Change: the directory name for the temporary files with the client
+request body is specified by directive client_body_temp_path, by
+default it is <prefix>/client_body_temp.
+*) Feature: the ngx_http_fastcgi_module and the directives:
+fastcgi_pass, fastcgi_root, fastcgi_index, fastcgi_params,
+fastcgi_connect_timeout, fastcgi_send_timeout, fastcgi_read_timeout,
+fastcgi_send_lowat, fastcgi_header_buffer_size, fastcgi_buffers,
+fastcgi_busy_buffers_size, fastcgi_temp_path,
+fastcgi_max_temp_file_size, fastcgi_temp_file_write_size,
+fastcgi_next_upstream, and fastcgi_x_powered_by.
+*) Bugfix: the "[alert] zero size buf" error; the bug had appeared in
+0.1.3.
+*) Change: the URI must be specified after the host name in the
+proxy_pass directive.
+*) Change: the %3F symbol in the URI was considered as the argument
+string start.
+*) Feature: the unix domain sockets support in the
+ngx_http_proxy_module.
+*) Feature: the ssl_engine and ssl_ciphers directives.
+Thanks to Sergey Skvortsov for SSL-accelerator.
+Changes with nginx 0.1.13                                        21 Dec 2004
+*) Feature: the server_names_hash and server_names_hash_threshold
+directives.
+*) Bugfix: the *.domain.tld names in the "server_name" directive did not
+work.
+*) Bugfix: the %request_length log parameter logged the incorrect
+length.
+Changes with nginx 0.1.12                                        06 Dec 2004
+*) Feature: the %request_length log parameter.
+*) Bugfix: when using the /dev/poll, select and poll on the platforms,
+where these methods may do the false reports, there may be the long
+delay when the request was passed via the keep-alive connection. It
+may be at least on Solaris when using the /dev/poll.
+*) Bugfix: the send_lowat directive is ignored on Linux because Linux
+does not support the SO_SNDLOWAT option.
+Changes with nginx 0.1.11                                        02 Dec 2004
+*) Feature: the worker_priority directive.
+*) Change: both tcp_nopush and tcp_nodelay directives affect the
+transferred response.
+*) Bugfix: nginx did not call initgroups().
+Thanks to Andrew Sitnikov and Andrei Nigmatulin.
+*) Change: now the ngx_http_autoindex_module shows the file size in the
+bytes.
+*) Bugfix: the ngx_http_autoindex_module returned the 500 error if the
+broken symlink was in a directory.
+*) Bugfix: the files bigger than 4G could not be transferred using
+sendfile.
+*) Bugfix: if the backend was resolved to several backends and there was
+an error while the response waiting then process may got caught in an
+endless loop.
+*) Bugfix: the worker process may exit with the "unknown cycle" message
+when the /dev/poll method was used.
+*) Bugfix: "close() channel failed" errors.
+*) Bugfix: the autodetection of the "nobody" and "nogroup" groups.
+*) Bugfix: the send_lowat directive did not work on Linux.
+*) Bugfix: the segmentation fault occurred if there was no events
+section in configuration.
+*) Bugfix: nginx could not be built on OpenBSD.
+*) Bugfix: the double slashes in "://" in the URI were converted to
+":/".
+Changes with nginx 0.1.10                                        26 Nov 2004
+*) Bugfix: if the request without arguments contains "//", "/./", "/../"
+or "%XX" then the last character in the request line was lost; the
+bug had appeared in 0.1.9.
+*) Bugfix: the fix in 0.1.9 for the files bigger than 2G on Linux did
+not work.
+Changes with nginx 0.1.9                                         25 Nov 2004
+*) Bugfix: the proxied request was sent without arguments if the request
+contains "//", "/./", "/../" or "%XX".
+*) Bugfix: the large compressed responses may be transferred not
+completely.
+*) Bugfix: the files bigger than 2G was not transferred on Linux that
+does not support sendfile64().
+*) Bugfix: while the build configuration on Linux the --with-poll_module
+parameter was required; the bug had appeared in 0.1.8.
+Changes with nginx 0.1.8                                         20 Nov 2004
+*) Bugfix: in the ngx_http_autoindex_module if the long file names were
+in the listing.
+*) Feature: the "^~" modifier in the location directive.
+*) Feature: the proxy_max_temp_file_size directive.
+Changes with nginx 0.1.7                                         12 Nov 2004
+*) Bugfix: on FreeBSD the segmentation fault may occur if the size of
+the transferred file was changed; the bug had appeared in 0.1.5.
+Changes with nginx 0.1.6                                         11 Nov 2004
+*) Bugfix: some location directive combinations with the regular
+expressions caused the wrong configuration choose.
+Changes with nginx 0.1.5                                         11 Nov 2004
+*) Bugfix: on Solaris and Linux there may be too many "recvmsg()
+returned not enough data" alerts.
+*) Bugfix: there were the "writev() failed (22: Invalid argument)"
+errors on Solaris in proxy mode without sendfile. On other platforms
+that do not support sendfile at all the process got caught in an
+endless loop.
+*) Bugfix: segmentation fault on Solaris in proxy mode and using
+sendfile.
+*) Bugfix: segmentation fault on Solaris.
+*) Bugfix: on-line upgrade did not work on Linux.
+*) Bugfix: the ngx_http_autoindex_module module did not escape the
+spaces, the quotes, and the percent signs in the directory listing.
+*) Change: the decrease of the copy operations.
+*) Feature: the userid_p3p directive.
+Changes with nginx 0.1.4                                         26 Oct 2004
+*) Bugfix: in the ngx_http_autoindex_module.
+Changes with nginx 0.1.3                                         25 Oct 2004
+*) Feature: the ngx_http_autoindex_module and the autoindex directive.
+*) Feature: the proxy_set_x_url directive.
+*) Bugfix: proxy module may get caught in an endless loop when sendfile
+is not used.
+Changes with nginx 0.1.2                                         21 Oct 2004
+*) Feature: the --user=USER, --group=GROUP, and --with-ld-opt=OPTIONS
+options in configure.
+*) Feature: the server_name directive supports *.domain.tld.
+*) Bugfix: the portability improvements.
+*) Bugfix: if configuration file was set in command line, the
+reconfiguration was impossible; the bug had appeared in 0.1.1.
+*) Bugfix: proxy module may get caught in an endless loop when sendfile
+is not used.
+*) Bugfix: with sendfile the response was not recoded according to the
+charset module directives; the bug had appeared in 0.1.1.
+*) Bugfix: very seldom bug in the kqueue processing.
+*) Bugfix: the gzip module compressed the proxied responses that was
+already compressed.
+Changes with nginx 0.1.1                                         11 Oct 2004
+*) Feature: the gzip_types directive.
+*) Feature: the tcp_nodelay directive.
+*) Feature: the send_lowat directive is working not only on OSes that
+support kqueue NOTE_LOWAT, but also on OSes that support SO_SNDLOWAT.
+*) Feature: the setproctitle() emulation for Linux and Solaris.
+*) Bugfix: the "Location" header rewrite bug fixed while the proxying.
+*) Bugfix: the ngx_http_chunked_module module may get caught in an
+endless loop.
+*) Bugfix: the /dev/poll module bugs fixed.
+*) Bugfix: the responses were corrupted when the temporary files were
+used while the proxying.
+*) Bugfix: the unescaped requests were passed to the backend.
+*) Bugfix: while the build configuration on Linux 2.4 the
+--with-poll_module parameter was required.
+Changes with nginx 0.1.0                                         04 Oct 2004
+*) The first public version.

Mercurial > hg > nginx-site

comparison text/en/CHANGES-1.22 @ 2852:a9ebed59b64f