--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/text/en/CHANGES-1.24	Tue Apr 11 17:30:02 2023 +0300
@@ -0,0 +1,9045 @@
+
+Changes with nginx 1.24.0                                        11 Apr 2023
+
+    *) 1.24.x stable branch.
+
+
+Changes with nginx 1.23.4                                        28 Mar 2023
+
+    *) Change: now TLSv1.3 protocol is enabled by default.
+
+    *) Change: now nginx issues a warning if protocol parameters of a
+       listening socket are redefined.
+
+    *) Change: now nginx closes connections with lingering if pipelining was
+       used by the client.
+
+    *) Feature: byte ranges support in the ngx_http_gzip_static_module.
+
+    *) Bugfix: port ranges in the "listen" directive did not work; the bug
+       had appeared in 1.23.3.
+       Thanks to Valentin Bartenev.
+
+    *) Bugfix: incorrect location might be chosen to process a request if a
+       prefix location longer than 255 characters was used in the
+       configuration.
+
+    *) Bugfix: non-ASCII characters in file names on Windows were not
+       supported by the ngx_http_autoindex_module, the ngx_http_dav_module,
+       and the "include" directive.
+
+    *) Change: the logging level of the "data length too long", "length too
+       short", "bad legacy version", "no shared signature algorithms", "bad
+       digest length", "missing sigalgs extension", "encrypted length too
+       long", "bad length", "bad key update", "mixed handshake and non
+       handshake data", "ccs received early", "data between ccs and
+       finished", "packet length too long", "too many warn alerts", "record
+       too small", and "got a fin before a ccs" SSL errors has been lowered
+       from "crit" to "info".
+
+    *) Bugfix: a socket leak might occur when using HTTP/2 and the
+       "error_page" directive to redirect errors with code 400.
+
+    *) Bugfix: messages about logging to syslog errors did not contain
+       information that the errors happened while logging to syslog.
+       Thanks to Safar Safarly.
+
+    *) Workaround: "gzip filter failed to use preallocated memory" alerts
+       appeared in logs when using zlib-ng.
+
+    *) Bugfix: in the mail proxy server.
+
+
+Changes with nginx 1.23.3                                        13 Dec 2022
+
+    *) Bugfix: an error might occur when reading PROXY protocol version 2
+       header with large number of TLVs.
+
+    *) Bugfix: a segmentation fault might occur in a worker process if SSI
+       was used to process subrequests created by other modules.
+       Thanks to Ciel Zhao.
+
+    *) Workaround: when a hostname used in the "listen" directive resolves
+       to multiple addresses, nginx now ignores duplicates within these
+       addresses.
+
+    *) Bugfix: nginx might hog CPU during unbuffered proxying if SSL
+       connections to backends were used.
+
+
+Changes with nginx 1.23.2                                        19 Oct 2022
+
+    *) Security: processing of a specially crafted mp4 file by the
+       ngx_http_mp4_module might cause a worker process crash, worker
+       process memory disclosure, or might have potential other impact
+       (CVE-2022-41741, CVE-2022-41742).
+
+    *) Feature: the "$proxy_protocol_tlv_..." variables.
+
+    *) Feature: TLS session tickets encryption keys are now automatically
+       rotated when using shared memory in the "ssl_session_cache"
+       directive.
+
+    *) Change: the logging level of the "bad record type" SSL errors has
+       been lowered from "crit" to "info".
+       Thanks to Murilo Andrade.
+
+    *) Change: now when using shared memory in the "ssl_session_cache"
+       directive the "could not allocate new session" errors are logged at
+       the "warn" level instead of "alert" and not more often than once per
+       second.
+
+    *) Bugfix: nginx/Windows could not be built with OpenSSL 3.0.x.
+
+    *) Bugfix: in logging of the PROXY protocol errors.
+       Thanks to Sergey Brester.
+
+    *) Workaround: shared memory from the "ssl_session_cache" directive was
+       spent on sessions using TLS session tickets when using TLSv1.3 with
+       OpenSSL.
+
+    *) Workaround: timeout specified with the "ssl_session_timeout"
+       directive did not work when using TLSv1.3 with OpenSSL or BoringSSL.
+
+
+Changes with nginx 1.23.1                                        19 Jul 2022
+
+    *) Feature: memory usage optimization in configurations with SSL
+       proxying.
+
+    *) Feature: looking up of IPv4 addresses while resolving now can be
+       disabled with the "ipv4=off" parameter of the "resolver" directive.
+
+    *) Change: the logging level of the "bad key share", "bad extension",
+       "bad cipher", and "bad ecpoint" SSL errors has been lowered from
+       "crit" to "info".
+
+    *) Bugfix: while returning byte ranges nginx did not remove the
+       "Content-Range" header line if it was present in the original backend
+       response.
+
+    *) Bugfix: a proxied response might be truncated during reconfiguration
+       on Linux; the bug had appeared in 1.17.5.
+
+
+Changes with nginx 1.23.0                                        21 Jun 2022
+
+    *) Change in internal API: now header lines are represented as linked
+       lists.
+
+    *) Change: now nginx combines arbitrary header lines with identical
+       names when sending to FastCGI, SCGI, and uwsgi backends, in the
+       $r->header_in() method of the ngx_http_perl_module, and during lookup
+       of the "$http_...", "$sent_http_...", "$sent_trailer_...",
+       "$upstream_http_...", and "$upstream_trailer_..." variables.
+
+    *) Bugfix: if there were multiple "Vary" header lines in the backend
+       response, nginx only used the last of them when caching.
+
+    *) Bugfix: if there were multiple "WWW-Authenticate" header lines in the
+       backend response and errors with code 401 were intercepted or the
+       "auth_request" directive was used, nginx only sent the first of the
+       header lines to the client.
+
+    *) Change: the logging level of the "application data after close
+       notify" SSL errors has been lowered from "crit" to "info".
+
+    *) Bugfix: connections might hang if nginx was built on Linux 2.6.17 or
+       newer, but was used on systems without EPOLLRDHUP support, notably
+       with epoll emulation layers; the bug had appeared in 1.17.5.
+       Thanks to Marcus Ball.
+
+    *) Bugfix: nginx did not cache the response if the "Expires" response
+       header line disabled caching, but following "Cache-Control" header
+       line enabled caching.
+
+
+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.
+