Changes

Revision history for H2O.

2.3.0-beta1 TBD
	- [core] forbid empty path string in configuration #1506 (Ichito Nagata)
	- [core] use eventfd instead of pipe on linux #1533 (Baodong Chen)
	- [core] remove redundancy #1568 #1569 #1584 #1596 (Baodong Chen)
	- [core] `!env` for respecting environment variables from the configuration file #1524 (Yannick Koechlin)
	- [core] avoid copying vector when calling writev #1600 (Kazuho Oku)
	- [core] alignment-aware allocation from memory pool #1605 (Baodong Chen)
	- [core] `stash` directive for storing arbitrary YAML data #1739 (Ichito Nagata)
	- [access-log] log connections that closed prior to sending a response #1235 (Kazuho Oku)
	- [compress] update brotli to 1.0.2 #1523 (Kazuho Oku)
	- [fastcgi] accept `default` as a keyword of the extensions attribute #1414 (Ichito Nagata)
	- [fastcgi] add verbose mode to fastcgi-cgi gateway #1466 (Kazuho Oku)
	- [fastcgi][mruby][proxy] do not delay sending the headers until some chunk of body becomes available #1508 (Ichito Nagata)
	- [http1][http2] support for server-timing #1646 #1717 (Ichito Nagata)
	- [http1][http2] forward informational responses #1727 (Ichito Nagata)
	- [http2] support `critical` attribute in preload link header #1436 (Kazuho Oku, Frederik Deweerdt)
	- [http2] continue to process active streams after sending GOAWAY upon graceful shutdown #1556 (Ichito Nagata)
	- [mime] more predefined types #1398 #1632 #1708 #1723 (Jxck, proyb6, OGINO Masanori)
	- [mime] mark */*+json as compressible #1709 (OGINO Masanori)
	- [mruby] Rack middleware support #1217 (Ichito Nagata)
	- [mruby] allow running asynchronous operations unbounded to the Rack request being processed #1173 (Ichito Nagata)
	- [mruby] add channel class and task method for parallel processing #1336 (Ritta Narita)
	- [mruby] implement sleep #1348 (Ichito Nagata)
	- [mruby] implement Digest::SHA256 #1387 (Kazuho Oku)
	- [mruby] add option to specify mrbgem dependencies out of tree #1446 (Satoshi Tagomori)
	- [mruby] on exception, emit filenames and consistent line number of embedded mruby code #1537 (Satoshi Tagomori)
	- [mruby] introduce `client-warning` header for error notification #1562 (Ichito Nagata)
	- [mruby] allow fiber switch in constructor #1574 (Kazuho Oku)
	- [mruby] fix crash when the rack handler returns a non-number status code #1576 (Kazuho Oku)
	- [mruby] add support for redis #1152 (Ichito Nagata)
	- [mruby] replace iijson with mattn-json #1684 (Yannick Koechlin, Kazuho Oku)
	- [mruby] update mruby and modules #1462 #1685
	- [proxy] load balancing support (round-robin, least-conn) #1277 #1361 (Justin Zhu)
	- [proxy] cap the amount of request body being buffered #1357 (Frederik Deweerdt)
	- [proxy] cap the amount of response body being buffered #1358 (Frederik Deweerdt)
	- [proxy] introduce separate timeouts for connection establishment and first-byte #1402 (Frederik Deweerdt)
	- [proxy] forward the error to the client when upstream closes the connection abruptly #1490 (Ichito Nagata)
	- [proxy] add option to skip supplementation of a `Date` header #1495 (Frederik Deweerdt)
	- [proxy] do not abort when receiving an invalid transfer-encoding header from upstream #1688 (Ichito Nagata)
	- [reproxy] connection pooling for reproxy #1434 (Ichito Nagata)
	- [ssl] support redis as a data store for session cache / ticket #1087 (Ichito Nagata)
	- [ssl] unbundle libressl #1546 (Kazuho Oku)
	- [ssl] add support for 425 Too Early status code #1344 (Kazuho Oku)
	- [libh2o] enable ECDH in the exmaple server #1602 (Varbin)
	- [libh2o] emit less system calls in websocket #1590 (Baodong Chen)
	- [libh2o] build examples using evloop #1589 (Baodong Chen)
	- [libh2o] add API to release thread-local data #1624 (Baodong Chen)
	- [libh2o] `h2o_gettimeofday` to obtain current time in microsecond order #1726 (Ichito Nagata)
	- [misc] include process id in crash backtrace #1254 (Kazuho Oku)
	- [misc] backtracing for BSD #1503 (Frederik Deweerdt)
	- [misc] fix build issues for Android #1521 (Joel Winarske)
	- [misc] switch to Docker-based CI #1551 #1580 (Kazuho Oku)

2.2.5 2018-06-01 08:00:00+0000
	- [security fix][access-log] fix buffer overflow CVE-2018-0608 #1775 (Frederik Deweerdt)
	- [fastcgi] index file name must be part of SCRIPT_NAME #1650 (Ichito Nagata)
	- [http2] do not compress cookies less than 20 bytes long #1389 (Julien Benoist)
	- [http2] stop opening new push streams after receiving GOAWAY #1555 (Ichito Nagata)
	- [http2] fix conformance issues #1579 #1582 #1599 (Kazuho Oku)
	- [mruby] drop the link rel=preload header with a x-http2-push-only attribute #1310 (Frederik Deweerdt)
	- [mruby] allow loading a file that shares the basename with one of the preloaded files #1662 (Ichito Nagata)
	- [proxy] fix I/O error when receiving multiple informational responses #1716 (Frederik Deweerdt)
	- [ssl] fix bug that prevents record size growing to maximum when latency optimization is disabled #1545 (Ichito Nagata)
	- [ssl] fix compatibility issues with libressl 2.7 #1707 (AIZAWA Hina)
	- [ssl] update picotls to support TLS 1.3 draft-26 #1718 (Kazuho Oku)

2.2.4 2017-12-15 07:00:00+0000
	- [security fix][access-log][ssl] fix crash when logging TLS 1.3 properties CVE-2017-10872 #1543 (MITSUNARI Shigeo)
	- [security fix][http2] fix crash when handling malformed HTTP/2 request CVE-2017-10908 #1544 (Kazuho Oku)
	- [access-log][compress] `%b` should log the amount of data sent after compression #1478 (Ichito Nagata)
	- [fastcgi][misc] respect H2O_PERL environment variable in share/h2o/setuidgid #1518 (Kazuho Oku)
	- [mime] fix Opus mimetype #1522 (Alex)
	- [mruby] fix runtime issue that prevents a closed variable from getting updated #1464 (Tatsushi Demachi)
	- [mruby] keep PATH_INFO undecoded #1480 (Ichito Nagata)
	- [mruby] fix keepalive not being used when the response to http_request is directly returned #1489 (Ichito Nagata)
	- [mruby] fix offset overflow of SCRIPT_INFO and PATH_INFO #1502 (Ichito Nagata)
	- [proxy][ssl] fix pointer corruption when connecting to origin via https (big-endian only) #1475 (Kazuho Oku)
	- [proxy] omit network I/O when handling internal redirect between hosts mapped to different ports #1498 (Ichito Nagata)
	- [ssl] fix crash on s390 (and possibly on other big-endian machines) #1474 (Apollon Oikonomopoulos)
	- [websocket] do not send `upgrade` header twice #1463 (Yamagishi Kazutoshi)

2.2.3 2017-10-19 06:00:00+0000
	- [security fix][http1] fix crash when receiving request with invalid framing CVE-2017-10868 #1459 (Frederik Deweerdt)
	- [security fix][proxy] fix stack overflow when sending huge request body to upstream CVE-2017-10869 #1460 (Frederik Deweerdt)
	- [core] disable buffering of stdout, stderr #1347 (Yannick Koechlin)
	- [expires] fix incorrect header emitted when units: month or year were used #1406 (Frederik Deweerdt)
	- [fastcgi] never return 304 if the file is a dynamic handler #1385 (Kazuho Oku)
	- [mime] flush all existing mapping when file.mime.settypes is used #1416 (Ichito Nagata)
	- [mruby] update mruby and modules #1320 #1338 #1413
	- [mruby] expose `SERVER_PROTOCOL` #1353 (Frederik Deweerdt)
	- [mruby] properly handle content-less response #1430 (Ichito Nagata)
	- [proxy] do not drop the Date request header #1408 (Ichito Nagata)
	- [ssl] fix deadlock during lazy initialzation #1425 (Apollon Oikonomopoulos)
	- [ssl] fix epoll-related crashes on OSCP updates #1427 (Apollon Oikonomopoulos)
	- [ssl] avoid spurious session ticket renewals #1444 (Apollon Oikonomopoulos)
	- [websocket] fix bug that might drop the first websocket frame #1276 (wuhanck)
	- [libh2o] clear OpenSSL's error queue before using it #1448 (Apollon Oikonomopoulos)
	- [doc] add documentation of `duration-stats` #1306 (Frederik Deweerdt)
	- [misc] fix build issues on OpenIndiana #1300 (David Carlier)
	- [misc] build on platforms without 64-bit atomics #1433 (Apollon Oikonomopoulos)

2.2.2 2017-04-23 03:24:00+0000
	- [ssl] fix OCSP stapling error when LibreSSL is used #1275 (Ian Moone)

2.2.1 2017-04-22 22:43:00+0000
	- [mruby] correct the line number reported on an exception #1239 #1251 (Ichito Nagata)
	- [mruby] retain the order of request headers sharing a single name #1271 (Kazuho Oku)
	- [ssl] fix assertion failure in `decode_ssl_input` #1264 (Kazuho Oku)
	- [ssl] fix OCSP stapling error when OpenSSL 1.1.0 is used #1270 (Kazuho Oku)
	- [libh2o] fix crash when abruptly closing an HTTP/2 connection on libuv #1250 (Kazuho Oku)
	- [libh2o] fix memory leak of `_timestamp_cache` #1255 (Kazuho Oku)
	- [doc] restore doc of `%{...}e` #1252 (Kazuho Oku)
	- [doc] fix typo suggesting using `brotli` instead of `br` #1263 (Bogdan Khomutsky)
	- [misc] fix undefined behaviors detected by ubsan #1246 (Frederik Deweerdt)

2.2.0 2017-04-05 02:18:00+0000
	- [core] add `crash-handler.wait-pipe-close` parameter #1092 (Frederik Deweerdt)
	- [core] introduce an option to bypass the `server` header sent from upstream #1226 (Frederik Deweerdt)
	- [core] apply global- and host-level configuration to requests not applicable to any of the path-level configurations #1231 (Kazuho Oku)
	- [access-log] add `%{remote}p` for logging the remote port #1166 (Kazuho Oku)
	- [access-log] add support for JSON-style escapes and null #1208 (Kazuho Oku)
	- [access-log] add specifier for logging per-request environment variables #1221 (Yannick Koechlin)
	- [access-log] add support for `<`, `>` modifiers for logging either the original or the final response #1238 (Kazuho Oku)
	- [access-log] do not emit request-total-time twice #1017 (Kazuho Oku)
	- [fastcgi] fix a bug that closes the FastCGI listener socket during startup #1203 (Frederik Deweerdt)
	- [file] add directive for serving gzipped files, decompressing them on-the-fly #1140 (Ichito Nagata)
	- [headers] fix buffer overrun during startup #1180 (Frederik Deweerdt)
	- [http1][proxy] preserve the cases of characters used in header names #1194 (Frederik Deweerdt)
	- [http1][proxy] fix undefined behavior in HTTP/1 parser #1189 (Frederik Deweerdt)
	- [http1] stop reading from socket after sending 400 to avoid the risk of assertion failure #1223 (Frederik Deweerdt)
	- [http2] recognize `x-http2-push-only` attribute on `link` header #1169 (Frederik Deweerdt)
	- [http2] add optional timeout for closing connections upon graceful shutdown #1108 (Frederik Deweerdt)
	- [http2] do not ack an acked PING frame #1175 (Moto Ishisawa)
	- [http2] reject requests exceeding the maximum allowed size more efficiently #1183 (Frederik Deweerdt)
	- [mruby] remove dependenty to mkmf #1197 (Yuki Kurihara)
	- [mruby] correct the line number reported on an exception #1239 (Ichito Nagata)
	- [proxy] add directives for tweaking headers sent to upstream #1126 (Justin Zhu)
	- [proxy] retain case-sensitivity of unix socket paths #1131 (Frederik Deweerdt)
	- [proxy] add directive for controlling the `via` request header #1225 (Frederik Deweerdt)
	- [ssl] add directive for logging session ID #1164 (Yannick Koechlin)
	- [ssl] add support for TLS 1.3 draft-18 #1204 (Kazuho Oku)
	- [ssl] stop evicting session entries in memcached when they are removed from internal cache #1185 (Ichito Nagata)
	- [ssl] fix crash when a secp384r1, secp521r1 certificate is used with TLS 1.3 #1214 (Kazuho Oku)
	- [ssl] fix build failure with OpenSSL 1.1.0 #1216 (Kazuho Oku)
	- [ssl] add doc for `handshake-timeout` #1233 (Kazuho Oku)
	- [status] fix race condition during start-up #1242 (Frederik Deweerdt)
	- [libh2o] implement `h2o_evloop_destroy` #1200 (kazan417)
	- [misc] add test code for fuzzing #1174 #1182 #1191 #1192 (Frederik Deweerdt, Jonathan Foote)
	- [misc] fix issues reported by Coverity #1168 #1172 #1179 (Harrison Bowden, Frederik Deweerdt)

2.1.0 2017-01-17 23:43:27+0000
	- [core] TCP latency optimization #873 #1076 (Kazuho Oku)
	- [core] provide tag to include other YAML files from the configuration file #1022 (Ichito Nagata)
	- [core] accept sequence of mappings for path-level configuration #1042 (Ichito Nagata)
	- [core] fix broken support for TCP Fast Open in OS X #1065 (Ichito Nagata)
	- [access-log] provide directive to emit request-level errors #1075 (Kazuho Oku)
	- [access-log] emit values of all `set-cookie` headers concatenated #1161 (Kazuho Oku)
	- [fastcgi] fix connection failure when `fastcgi.spawn` is used with an uid #1119 (Kazuho Oku)
	- [file] more pre-defined MIME types #1103 (Joe Duarte)
	- [http2][proxy] recognize link rel=preload headers in interim response as a trigger to push resources #916 (Kazuho Oku)
	- [http1][http2] validate characters used in the headers #974 #1044 (Frederik Deweerdt, Kazuho Oku)
	- [http1][http2] notify error downstream when an error occurred while generating a response #1031 (Frederik Deweerdt)
	- [http1][http2] fix resource leak upon upgrade failure to HTTP/2 #1161 (Frederik Deweerdt)
	- [http2] add `http2-push-preload` directive to turn off H2 push being initiated by link rel=preload header #929 (Kazuho Oku)
	- [http2] add support for `cache-digest` header #967 #988 (Kazuho Oku)
	- [http2] drop `host` header in HTTP/2 layer #973 #998 (Frederik Deweerdt, Kazuho Oku)
	- [http2] don't use etag for calculating casper cookie #986 (Kazuho Oku)
	- [http2] add support for H2 debug state #1019 (Ichito Nagata)
	- [mruby] add dos_detector mruby handler #1013 (Ichito Nagata)
	- [mruby] add DSL for access control lists (acl) #1016 (Ichito Nagata)
	- [mruby] share mruby state and constants between handlers #1032 (Ichito Nagata)
	- [mruby] add library for address-block-based access control #1038 (Ichito Nagata)
	- [proxy] add an option to connect to upstream using PROXY protocol #930 (Kazuho Oku)
	- [proxy] don't escape `:` in URI path #977 (Frederik Deweerdt)
	- [proxy] preserve received URLs as much as possible #985 #1071 (Frederik Deweerdt)
	- [proxy] add an option to prevent emiting x-forwarded-* headers #999 (Frederik Deweerdt)
	- [proxy] cache TLS session used for upstream connections #1053 (Ichito Nagata)
	- [proxy] turn on/off on-the-fly compression based on the `x-compress-hint` header #1085 (Frederik Deweerdt)
	- [ssl] set add_lock callback to prevent unnecessary lock-add-unlock #983 (Roberto Guimaraes)
	- [ssl] add support for OpenSSL 1.1.0 #1064 (Kazuho Oku)
	- [status] collect and report HTTP statistics #893 (Frederik Deweerdt)
	- [status] report additional stats when jemalloc is used #1017 (Frederik Deweerdt)
	- [throttle] add new handler for throttling the response bandwidth #917 (Justin Zhu)
	- [libh2o] provide `h2o_rand` that calls the appropriate random function depending on the OS #927 (David CARLIER)
	- [libh2o] do not require use of picohttpparser.h when using the HTTP/1 client #946 (Kazuho Oku)
	- [libh2o] install library files to the correct location #1116 (Frederik Deweerdt)
	- [misc] provide `crash-handler` directive to customize crash logging #935 (Frederik Deweerdt)
	- [misc] guess the default location of h2o.conf #969 (Davsid Carlier)
	- [misc] allow to disable libuv even when it is found #995 (Frederik Deweerdt)
	- [misc] add font/woff2 to the default mime-type mapping #1066 (Andy Davies)
	- [misc] mark JavaScript and JSON files as compressible by default #1067 (Kazuho Oku)

2.0.6 2017-01-05 05:31:00+0000
	- [compress] fix the compression quality being ignored #1154 (Yannick Koechlin)
	- [mruby] stop GIT access during build #1149 (parly)

2.0.5 2016-12-21 06:00:00+0000
	- [security fix] fix use-after-free vulnerability CVE-2016-7835 #1144 (Frederik Deweerdt, Kazuho Oku)
	- [core] fix busy loop after receiving SIGTERM (linux) #1100 (Kazuho Oku, Frederik Deweerdt)
	- [core] don't try to register kevent changes more than once (*BSD, OS X) #1113 (Ichito Nagata)
	- [compress] set `vary: accept-encoding` upon negotiation failure of the compression method #1083 (Frederik Deweerdt)
	- [file] add missing `</ul>` #1106 (Kazuho Oku)
	- [http2] fix a bug that left connections open #1090 (Kazuho Oku)
	- [http2] ignore PRIORITY frames that reference closed pushed streams #1105 (Frederik Deweerdt)
	- [http2] add `Secure` attribute to the casper cookie #1134 (Kazuho Oku)
	- [http2] permit use of HEADERS with a smaller stream ID than a preceding PRIORITY #1136 (Frederik Deweerdt, Kazuho Oku)
	- [mruby] update mruby to HEAD #1135 (Kazuho Oku)
	- [proxy] set `content-length: 0` when receiving a zero-byte POST or PUT #1080 (Frederik Deweerdt)
	- [ssl] update libressl to 2.4.4 #1127 (Kazuho Oku)
	- [ssl] erase OCSP stapling data when the stapling updater returns a permanent failure #1117 (Kazuho Oku)

2.0.4 2016-09-14 08:00:00+0000
	- [security fix][core] fix DoS attack vector CVE-2016-4864 #1077 (Frederik Deweerdt, Kazuho Oku)
	- [libh2o] fix crash on connect timeout #960 (disigma)

2.0.3 2016-09-07 22:03:00+0000
	- [file] don't use `readdir_r` on Linux, Solaris #1046 #1052 (Frederik Deweerdt, Kazuho Oku)
	- [http2] fix negative error code sent when cancelling a pushed stream #1039 (Frederik Deweerdt)
	- [http2] fix a bug that may cause a stream to stall #1040 (Frederik Deweerdt)
	- [http2] fix a bug that reset the stream when receiving HEADERS after PRIORITY #1043 (Frederik Deweerdt)
	- [mruby] fix mruby handler becoming unusable after failed connection in http_request on FreeBSD #1062 (Kazuho Oku)

2.0.2 2016-08-01 20:36:00+0000
	- [fastcgi] setenv should displace HTTP headers #996 (Kazuho Oku)
	- [http2] fix buffer overrun #972 (Frederik Deweerdt)
	- [misc] fix build error when libuv is not found #1008 (nextgenthemes)
	- [misc] fix assertion failure when YAML alias and merge is used in certain way #1011 (Kazuho Oku)

2.0.1 2016-06-23 22:00:00+0000
	- [fastcgi] fix internal server error when PHP returns a huge header #958 (Kazuho Oku)
	- [http2] recognize link header containing multiple links #950 (Frederik Deweerdt)
	- [libh2o] fix resource leaks upon startup failure #936 (David CARLIER)
	- [libh2o] do not require linking to libbrotli externally #941 (Kazuho Oku)

2.0.0 2016-06-01 01:55:00+0000
	- [core][breaking change] do not automatically append `/` to path-level configuration #820 (Kazuho Oku)
	- [core] support `<<` in configuration file #786 (Kazuho Oku)
	- [core] configurable server: header #877 (Frederik Deweerdt)
	- [core] add directive for customizing the path of temporary buffer files #911 (Kazuho Oku)
	- [core] fix crash when receiving SIGTERM during start-up #878 (Frederik Deweerdt)
	- [core] spawn the configured number of DNS client threads #880 (Sean McArthur)
	- [access-log] add directive for logging protocol-specific values #801 (Kazuho Oku)
	- [access-log][fastcgi][mruby] per-request environment variables #868 (Kazuho Oku)
	- [access-log] fix memory leak during start-up #864 (Frederik Deweerdt)
	- [compress] on-the-fly compression using brotli, as well as directives to tune the compression parameters #802, #924 (Kazuho Oku, Frederik Deweerdt)
	- [compress][expires] refrain from setting redundant `cache-control` tokens #846 (Kazuho Oku)
	- [file] `file.file` directive for mapping specific file #822 (Kazuho Oku)
	- [file] `send-compress` directive (renamed from `send-gzip`) to support pre-compressed files using brotli #802 (Kazuho Oku)
	- [file] cache open failures #836 (Kazuho Oku)
	- [http2] support for nopush attribute in the link rel=preload header #863 (Satoh Hiroh)
	- [http2] support for push after delegation #866 (Kazuho Oku)
	- [http2] ignore push indications made by a pushed response #897 (Kazuho Oku)
	- [http2] accept `capacity-bits` attribute of the `http2-casper` configuration directive #882 (Satoh Hiroh)
	- [http2] avoid memcpy during HPACK huffman encoding #749 (Kazuho Oku)
	- [http2] fix potential stall when http2-max-concurrent-requests-per-connection is set to a small number #912 (Kazuho Oku)
	- [http2] refuse push a single resource more than once #903 (Kazuho Oku)
	- [http2] fix assertion failure when receiving more data than expected during upgrade #922 (Frederik Deweerdt)
	- [mruby] add $H2O_ROOT/share/h2o/mruby to the default load path #851 (Kazuho Oku)
	- [proxy] add support for HTTPS #875 (Kazuho Oku)
	- [proxy] add an configuration option to pass through `x-forwarded-proto` request header #883 (Kazuho Oku)
	- [proxy] log error when upstream connection is unexpectedly closed #895 (Frederik Deweerdt)
	- [ssl] update libressl to 2.2.7 #898 (Kazuho Oku)
	- [ssl] support ECDH curves other than P-256 #841 (Kazuho Oku)
	- [ssl] add support for text-based memcache protocol #854 (Kazuho Oku)
	- [ssl] fix memory leak when using TLS resumption with the memcached backend #856 (Kazuho Oku)
	- [ssl] fix "undefined subroutine" error in the OCSP updater #872 (Masayuki Matsuki)
	- [ssl] cap the number of OCSP updaters running concurrently #891 (Kazuho Oku)
	- [ssl] fix use-after-free when using session resumption with memcached backend #923 (Frederik Deweerdt)
	- [libh2o] add API for obtaining the socket descriptor #886 (Frederik Deweerdt)
	- [libh2o] add API to selectively disable automated I/O on reads and writes #890 (Frederik Deweerdt)
	- [libh2o] bugfix: h2o_mem_swap swaps only the first 256 bytes #924 (Frederik Deweerdt)
	- [status] introduce the status handler #848 (Kazuho Oku)
	- [misc] install examples #850 (James Rouzier)

1.7.3 2016-05-26 02:32:00+0000
	- [security fix][http2] fix use-after-free on premature connection close (CVE-2016-4817) #920 (Frederik Deweerdt)
	- [core] fix SIGBUS when temporary disk space is full #910 (Kazuho Oku)
	- [mruby] do not drop `link` header #913 (Kazuho Oku)
	- [mruby] fix memory leak during initialization #906 (Frederik Deweerdt)
	- [mruby] fix race condition in mruby regex handler #908 (Kazuho Oku)
	- [libh2o] fix crash in h2o_url_stringify #918 (Kazuho OKu)

1.7.2 2016-05-09 03:12:00+0000
	- [core] fix crash when receiving SIGTERM during start-up #878 (Frederik Deweerdt)
	- [core] spawn the configured number of DNS client threads #880 (Sean McArthur)
	- [http2] accept `capacity-bits` attribute of the `http2-casper` configuration directive #882 (Satoh Hiroh)
	- [ssl] update libressl to 2.2.7 #898 (Kazuho Oku)
	- [ssl] fix memory leak when using TLS resumption with the memcached backend #856 (Kazuho Oku)
	- [ssl] fix "undefined subroutine" error in the OCSP updater #872 (Masayuki Matsuki)

1.7.1 2016-03-07 06:50:00+0000
	- [core] fix incorrect line no. reported in case of YAML syntax error #785 (Kazuho Oku)
	- [core] fix build issue / memory leak when the poll backend is used #777 #787 (devlearner)
	- [core] when building, repect `EXTRA_LIBS` passed from command line #793 (Kazuho Oku)
	- [core] fix memory leaks during start-up #792 (Domingo Alvarez Duarte)
	- [core] fix stability issue when receiving a signal #799 (Kazuho Oku)
	- [fastcgi] fix off-by-one buffer overflow #762 (Domingo Alvarez Duarte)
	- [fastcgi][mruby] install missing script files #791 #798 (AIZAWA Hina)
	- [mruby] truncate body to the size specified by `content-length` #778 (Kazuho Oku)
	- [mruby] fix error when reading a ruby script >= 64K #824 (Domingo Alvarez Duarte)
	- [proxy] fix I/O error when transferring files over 2GB on FreeBSD / OS X #821 #834 (Kazuho Oku)
	- [ssl] bugfix: use of session ticket not disabled even when configured to #819 #835 (Kazuho Oku)
	- [libh2o] provide pkg-config .pc files #743 (OGINO Masanori)
	- [libh2o] include version numbers in the .so filename #794 (Matt Clarkson)
	- [doc] refine documentation #601 #746 #748 #766 #781 #811

1.7.0 2016-02-05 02:03:00+0000
	- [core] support for wildcard hostnames #634 (Kazuho Oku)
	- [core][file] preserve query paramaters upon redirection to a directory #690 (Tatsuhiro Tsujikawa)
	- [core] use uppercase letters in URI-escape sequence #695 (Kazuho Oku)
	- [core] forbid duplicates in `hosts` section #709 (Kazuho Oku)
	- [fastcgi] add support for CGI #618 (Kazuho Oku)
	- [fastcgi] drop transfer-encoding header #641 (Kazuho Oku)
	- [file] fix a bug that caused `file.mime.addtypes` to fail setting the attributes of a content-type #731 (Kazuho Oku)
	- [http2] fix broken `PUSH_PROMISE` frames being sent under high pressure #734 #737 (Kazuho Oku)
	- [mruby] provide `env["rack.input"]` #515 #638 #644 (Masayoshi Takahashi, Kazuho Oku)
	- [mruby] HTTP client API #637 #643 (Kazuho Oku)
	- [mruby] dump the ruby source on error #631 (Kazuho Oku)
	- [mruby] provide access to `$H2O_ROOT` #629 (Kazuho Oku)
	- [mruby] change mrb_int to 64-bit on 64-bit systems #639 (Kazuho Oku)
	- [mruby] concatenate request headers having same name #666 (Kazuho Oku)
	- [mruby] bundle mruby-errno, mruby-file-stat #675 (Kazuho Oku)
	- [mruby] refrain from building mruby handler by default if mkmf (part of ruby dev files) is not found #710 (Kazuho Oku)
	- [proxy] detect upstream close of pooled socket before reuse #679 (Kazuho Oku)
	- [reproxy] add support for relative URI #712 (Kazuho Oku)
	- [ssl] turn on neverbleed by default #633 (Kazuho Oku)
	- [libh2o] fix memory leaks during destruction #724 (greatwar)
	- [libh2o] simplify vector operations #715 #735 (Domingo Alvarez Duarte)
	- [misc] support basic authentication using .htpasswd #624 (Kazuho Oku)
	- [misc] fix build error when an older version of H2O is installed aside an external dependency #718 #722 #736 (Kazuho Oku)

1.6.3 2016-01-26 07:46:00+0000
	- [fastcgi][proxy] fix double-free issue during configuration phase #723 (Kazuho Oku)
	- [proxy] fix response getting truncated when neither content-length nor transfer-encoding is used #725 (Kazuho Oku)
	- [websocket] fix crash when access-log is enabled #698 (Shota Fukumori)

1.6.2 2016-01-13 06:24:00+0000
	- [security fix][redirect] uri-escape the user-supplied portion of the redirect path (CVE-2016-1133) #682 #684 (Kazuho Oku)
	- [core] fix error when trying to set multiple error documents using one `error-doc` directive #676 (Yamagishi Kazutoshi)
	- [file] fix a bug that incorrectly returns 403 when a file is requested with a trailing slash #686 (Yamagishi Kazutoshi)
	- [http2] fix HPACK encoder error (and crash) when trying to encode a token wo. hpack index #640 (Kazuho Oku)
	- [libh2o] fix race condition during multithread receiver (un)registration #659 (Chul-Woong Yang)
	- [libh2o] fix memory leak on dispose #683 (Kazuho Oku)

1.6.1 2015-12-18 05:05:00+0000
	- [misc] fix build error on armv8a #628 (Kazuho Oku)
	- [misc] fix build error when libuv < 1.0.0 is installed #630 (Kazuho Oku)

1.6.0 2015-12-04 05:47:00+0000
	- [core] customized error pages #606 (Kazuho Oku)
	- [core] fix busy loop when receiving RST packet under certain conditions #603 (Kazuho Oku)
	- [access-log] collect and log various timings #583 (Kazuho Oku)
	- [access-log] support '%A' and '%p' #585 (Kazuho Oku)
	- [access-log] support '%{...}t' compatibile with Apache HTTP Server #587 (Kazuho Oku)
	- [fastcgi] increase backlog size the bundled fastcgi server #588 (Kazuho Oku)
	- [fastcgi] fix uninitialized memory access / memory leak during startup #611 (Kazuho Oku)
	- [file] implement file descriptor cache #596 (Kazuho Oku)
	- [http2] increase incoming window size from 256KB to 16MB #582 (Kazuho Oku)
	- [http2] decrease memory footprint (and speedup) #599 (Kazuho Oku)
	- [http2] start server push before the response headers for the original request becomes ready #593 (Kazuho Oku)
	- [http2] fix issues reported by h2spec 1.2.0 #595 (Kazuho Oku)
	- [http2] fix NULL access when an error during upgrade from HTTP/1 #607 (Kazuho Oku)
	- [http2] fix too-many-streams error with h2load #608 (Kazuho Oku)
	- [websocket] support proxying websocket connections #581 (Justin Zhu)
	- [libh2o] fix compiler warnings #598 (Matt Clarkson, Kazuho Oku)
	- [misc] downgrade required CMake version to 2.8.11 #594 (Kazuho Oku)

1.5.4 2015-11-12 04:05:00+0000
	- [access-log] do not emit protocol and authority for `%U` #586 (Kazuho Oku)
	- [ssl] fix handshake failure with older versions of Android (2.x) #591 (Kazuho Oku)

1.5.3 2015-11-06 04:30:00+0000
	- [core] decode url-encoded character at the end of path #567 (Kazuho Oku)
	- [access-log] fix startup failure on OSX when configured to emit to pipe #580 (Kazuho Oku)
	- [http2] fix memory / state corruption in HPACK encoder #571 (Tatsuhiro Tsujikawa, Kazuho Oku)
	- [http2] improve HPACK compression ratio #573 (Tatsuhiro Tsujikawa, Kazuho Oku)
	- [http2] fix behavior when HEADERS frame specifies a stream not open as a dependency #575 (Kazuho Oku)
	- [proxy] do not reset HTTP2 push paths when request is delegated to proxy #579 (Kazuho Oku)
	- [ssl] include "http/1.1" in ALPN / NPN protocol selection list #578 (Kazuho Oku)

1.5.2 2015-10-20 06:49:00+0000
	- [http2] fix stall when only reprioritized streams are being transferred #564 (Kazuho Oku)

1.5.1 2015-10-20 01:13:00+0000
	- [file] fixed directory listing not alphabetically sorted #412 #474 #539 (Kazuho Oku)
	- [file] mime-type lookup should be case-insensitive #561 (Kazuho Oku)
	- [file] fix corrupt links in directory listing #562 (Kazuho Oku)
	- [http1] preserve HTTP connection after redirect #552 (Kazuho Oku)
	- [http2] fixed reprioritized streams (to highest) sometimes being interleaved with lower priority streams #550 (Kazuho Oku)
	- [libh2o] add `-DWITHOUT_LIBS=ON` configuration option #551 (Kazuho Oku)
	- [libh2o] adjustments to build libh2o in a subdirectory #556 (Futur Solo)
	- [misc] rewrite setuidgid helper program in Perl #553 (Kazuho Oku)
	- [misc] fix doc issues #530 #547 #549 (Masaki TAGAWA, Kazuho Oku, Kazu Yamamoto)

1.5.0 2015-09-30 06:39:00+0000
	- [http2] enable `http2-reprioritize-blocking-assets` by default #528 (Kazuho Oku)
	- [ssl] fix issues with neverbleed #520 (Kazuho Oku)

1.5.0-beta4 2015-09-23 03:36:00+0000
	- [mruby] provide `env['rack.errors']`, `env['SERVER_SOFTWARE']` #517 #519 (Masayoshi Takahashi, Kazuho Oku)
	- [ssl] add support for neverbleed - the OpenSSL / LibreSSL privilege separation engine #520 (Kazuho Oku)

1.5.0-beta3 2015-09-18 03:44:00+0000
	- [http2] fix crash when `http2-reprioritize-blocking-assets`, `file.custom-handler` are used together #511 #514 (Kazuho Oku)

1.5.0-beta2 2015-09-16 07:00:00+0000
	- [serurity fix][file] fix directory traversal (CVE-2015-5638) (Kazuho Oku)
	- [mruby] fix build failure when oniguruma is already installed #501 #506 (Kazuho Oku)
	- [mruby] update sample mruby app to use rack-based API #498 (Masayoshi Takahashi)

1.5.0-beta1 2015-09-11 06:15:49+0000
	- [core] introduce `is_compressible` and `priority` attributes to MIME map #436 #496 (Kazuho Oku)
	- [access-log] fix bug that emitted unnecessary NUL char in certain conditions #462 #463 (Kazuho Oku)
	- [fastcgi] support for http2 server-push using `link: rel=preload` header #446 (Kazuho Oku)
	- [file] send `etag` and `vary` headers on 304 response #439 (Kazuho Oku)
	- [file] sort directory listing #412 #474 (Kazuho Oku)
	- [gzip] introduce support for on-the-fly gzip #413 #457 (Justin Zhu)
	- [http2] introduce cookie-based implementation of cache-aware server-push #421 #432 (Kazuho Oku)
	- [http2] improve HPACK compression ratio of server-push #450 (Kazuho Oku)
	- [http2] never push if client requested not to #464 (Kazuho Oku)
	- [http2] send `content-length` if possible #472 (Kazuho Oku)
	- [mruby] production-level support using Rack-based interface #467 #475 #489 (Kazuho Oku)
	- [reproxy] support delegation using relative URL #468 (Kazuho Oku)
	- [reproxy] preserve method if status is 307 or 308 #491 (Kazuho Oku)
	- [ssl] improved error handling of `openssl ocsp` command #449 #454 (Tatsuhiro Tsujikawa)
	- [ssl] use libressl on ARM as well #485 (Kazuho Oku)

1.4.4 2015-08-17 21:45:00+0000
	- [misc] fix install error of libh2o-evloop in case development files of OpenSSL cannot be found #443 (Kazuho Oku)

1.4.3 2015-08-17 01:25:00+0000
	- [fastcgi] change ownership of domain socket when `fastcgi.spawn` command is used #443 (Masaki TAGAWA)
	- [fastcgi] kill fastcgi processes spawned by `fastcgi.spawn` command when standalone server receives SIGINT #444 (Kazuho Oku)
	- [file] fix file descriptor leak on multi-range request #434 (Justin Zhu)
	- [ssl] update libressl to 2.2.2 #440 (Kazuho Oku)
	- [misc] fix build error in case development files of OpenSSL cannot be found #433 (Kazuho Oku)

1.4.2 2015-07-28 08:02:00+0000
	- [fastcgi] do not concatenate the headers (ex. Set-Cookie) sent by a FastCGI app #427 (Kazuho Oku)
	- [ssl] for guarding session ticket secret use writer-preferred locks on Linux as well #423 (Kazuho Oku)
	- [misc] suppress compiler warnings #415 (Syohei YOSHIDA)

1.4.1 2015-07-22 11:55:00+0000
	- [core] respect the value of the `user` configuration directive (was always switching to `nobody`) #416 (Kazuho Oku)

1.4.0 2015-07-22 09:41:00+0000
	- [core] add support for the PROXY protocol #386 #389 (Kazuho Oku)
	- [core] drop privileges if run as root without `user` directive #410 (Kazuho Oku)
	- [fastcgi] pass `HTTPS: on` to FastCGI application if the scheme is HTTPS #379 (Kazuho Oku)
	- [fastcgi] drop privileges of the fastcgi process spawned by `fastcgi.spawn` #414 (Kazuho Oku)
	- [mruby] introduce experimental mruby handler #378 #387 #399 #402 #404 #408 (Ryosuke Matsumoto)
	- [proxy] support application server listening to unix-domain socket #383 (Kazuho Oku)
	- [SSL] implement session cache using memcached #391 #395 (Kazuho Oku)
	- [SSL] session ticket with automatic rollover, file-based and memcached-based sharing #395 #400 (Kazuho Oku)
	- [SSL] fix server crash during startup if more than 4 certificates are used #375 (Kazuho Oku)
	- [misc] support for musl (C runtime running on Linux other than glibc) #374 (Bennett Goble)
	- [misc] do not spawn processes / create files unless the server is starting #381 (Kazuho Oku)
	- [misc] support for OpenIndiana (and other Solaris-based OS) #384 (Kazuho Oku)
	- [misc] replace select-based backend with poll #385 (Kazuho Oku)
	- [misc] update libyaml to 0.1.6 #379 (Martell Malone)

1.3.1 2015-06-19 03:35:00+0000
	- [core] do not refuse to start-up when failing to enable TCP Fast Open #368 (Kazuho Oku)
	- [fastcgi] fix server start-up issues when using `fastcgi.spawn` #367 (Kazuho Oku)
	- [SSL] support OCSP stapling using `openssl ocsp` command built from LibreSSL in addition to OpenSSL #366 (Tatsuhiro Tsujikawa)

1.3.0 2015-06-17 21:53:00+0000
	- [core] enable TCP fast-open #356 (Tatsuhiko Kubo)
	- [core] improve virtual-host lookup logic #293 #296 (Kazuho Oku)
	- [core] fix content being mis-sent for HEAD requests #300 #302 (Kazuho Oku)
	- [doc] bundle documents #292 (Kazuho Oku)
	- [fastcgi] add FastCGI support #346 #359 #360 #364 (Kazuho Oku)
	- [file] support for `If-Range` requests #345 (Justin Zhu)
	- [file] send 503 (not 403) in case if too many files are open #304 (Kazuho Oku)
	- [http2] add `http2-reprioritize-blocking-assets` directive to optimize first-paint time on Chrome #349 (Kazuho Oku)
	- [http2] fix incompliant behavior when the number of stream exceeds the negotiated maximum #341 #352 (Kazuho Oku)
	- [proxy] fix potential use-after-free issue in case upstream name is resolved using getaddrinfo #307 (Kazuho Oku)
	- [proxy] increase default I/O timeout from 5 to 30 seconds fb5c016 (Kazuho Oku)
	- [redirect] support internal redirect #364 (Kazuho Oku)
	- [SSL] fix assertion failure during handshake #316 (Kazuho Oku)
	- [SSL] fix assertion failure when receiving a corrupt TLS record (http2 only) #297 (Kazuho Oku)
	- [SSL] fix build error on OpenSUSE using libressl #337 (Kazuho Oku)
	- [SSL] select ALPN protocol based on server-side preference #335 (Justin Zhu)
	- [libh2o] build shared libraries as well #324 (pyos)
	- [libh2o] build libh2o-evloop #327 (Laurentiu Nicola)
	- [misc] emit stacktrace in case of fatal error (Linux only) #331 (Kazuho Oku)
	- [misc] improve NetBSD compatibility #289 (Kazuho Oku)
	- [misc] fix file descriptor leaks #336 (Kazuho Oku)

1.2.0 2015-04-14 07:13:00+0000
	- [core] bundle libyaml #248 (Kazuho Oku)
	- [core] implement master-worker process mode and daemon mode (bundles Server::Starter) #258 #270 (Kazuho Oku)
	- [file] more mime-types by default #250 #254 #280 (Tatsuhiko Kubo, George Liu, Kazuho Oku)
	- [file][http1] fix connection being closed if the length of content is zero #276 (Kazuho Oku)
	- [headers] fix heap overrun during configuration #251 (Kazuho Oku)
	- [http2] do not delay sending PUSH_PROMISE #221 (Kazuho Oku)
	- [http2] reduce memory footprint under high load #271 (Kazuho Oku)
	- [http2] fix incorrect error sent when number of streams exceed the limit #268 (Kazuho Oku)
	- [proxy] fix heap overrun when building request sent to upstream #266 #269 (Moto Ishizawa, Kazuho Oku)
	- [proxy] fix laggy response in case the length of content is zero #274 #276 (Kazuho Oku)
	- [SSL] fix potential stall while reading data from client #268 (Kazuho Oku)
	- [SSL] bundle LibreSSL #236 #272 (Kazuho Oku)
	- [SSL] obtain source-level compatibility with BoringSSL #228 (Kazuho Oku)
	- [SSL] add directive `listen.ssl.cipher-preference` for controlling the selection logic of cipher-suites #233 (Kazuho Oku)
	- [SSL] disable TLS compression #252 (bisho)
	- [libh2o] fix C++ compatibility (do not use empty struct) #225 (Kazuho Oku)
	- [libh2o] search external dependencies using pkg-config #227 (Kazuho Oku)
	- [misc] fix GCC version detection bug used for controlling compiler warnings #224 (Kazuho Oku)
	- [misc] check merory allocation failures in socket pool #265 (Tatsuhiko Kubo)

1.1.1 2015-03-09 06:12:00+0000
	- [proxy] fix crash on NetBSD when upstream connection is persistent #217 (Kazuho Oku)
	- [misc] fix compile error on FreeBSD #211 #212 (Syohei Yoshida)

1.1.0 2015-03-06 06:41:00+0000
	- [core][file] send redirects appending '/' as abs-path redirects #209 (Kazuho Oku)
	- [headers] add directives for manipulating response headers #204 (Kazuho Oku)
	- [http2] do not send a corrupt response if header value is longer than 126 bytes #193 (Kazuho Oku)
	- [http2] fix interoperability issue with nghttp2 0.7.5 and above 5c42eb1 (Kazuho Oku)
	- [proxy] send `via` header to upstream #191 (Kazuho Oku)
	- [proxy] resolve hostname asynchronously #207 (Kazuho Oku)
	- [proxy] distribute load between upstream servers (using `rand()`) #208 (Kazuho Oku)
	- [proxy] fix a bug that may cause a corrupt `location` header being forwarded #190 (Kazuho Oku)
	- [reproxy] add support for `x-reproxy-url` header #187 #197 (Daisuke Maki, Kazuho Oku)

1.0.1 2015-02-23 05:50:00+0000
	- [core] change backlog size from 65,536 to 65,535 #183 (Tatsuhiko Kubo)
	- [http2] fix assertion failure in HPACK encoder #186 (Kazuho Oku)
	- [http2] add `extern` to some global variables that were not marked as such #178 (Kazuho Oku)
	- [proxy] close persistent upstream connection if client abruptly closes the stream #188 (Kazuho Oku)
	- [proxy] fix internal state corruption in case upstream sends response headers divided into multpile packets #189 (Kazuho Oku)
	- [SSL] add host header to OCSP request #176 (Masaaki Hirose)
	- [libh2o] do not require header files under `deps/` when using libh2o #173 (Kazuho Oku)
	- [libh2o] fix compile error in examples when compiled with `H2O_USE_LIBUV=0` #177 (Kazuho Oku)
	- [libh2o] in example, add missing / after the reference path #180 (Matthieu Garrigues)
	- [misc] fix invalid HTML in sample page #175 (Deepak Prakash)

1.0.0 2015-02-18 20:01:00+0000
	- [core] add redirect handler #150 (Kazuho Oku)
	- [core] add `pid-file` directive for specifying the pid file #164 (Kazuho Oku)
	- [core] connections accepted by host-specific listeners should not be handled by handlers of other hosts #163 (Kazuho Oku)
	- [core] (FreeBSD) fix a bug that prevented the standalone server from booting when run as root #160 (Kazuho Oku)
	- [core] switch to pipe-based interthread messaging #154 (Kazuho Oku)
	- [core] use kqueue on all BSDs #156 (Kazuho Oku)
	- [access-log] more logging directives: %H, %m, %q, %U, %V, %v #158 (Kazuho Oku)
	- [access-log] bugfix: header values were not logged when specified using uppercase letters #157 (Kazuho Oku)
	- [file] add application/json to defalt MIME-types #159 (Tatsuhiko Kubo)
	- [http2] add support for the finalized version of HTTP/2 #166 (Kazuho Oku)
	- [http2] fix issues reported by h2spec v0.0.6 #165 (Kazuho Oku)
	- [proxy] merge the cookie headers before sending to upstream #161 (Kazuho Oku)
	- [proxy] simplify the configuration directives (and make persistent upstream connections as default) #162 (Kazuho Oku)
	- [SSL] add configuration directive to preload DH params #148 (Jeff Marrison)
	- [libh2o] separate versioning scheme using H2O_LIBRARY_VERSION_* #167 (Kazuho Oku)

0.9.2 2015-02-10 04:17:00+0000
	- [core] graceful shutdown on SIGTERM #119 (Kazuho Oku)
	- [core] less TCP errors under high load #81 (Kazuho Oku)
	- [file] add support for HEAD requests #110 (Mark Hoersken)
	- [http1] MSIE workaround (send `Cache-Control: private` in place of Vary) #114 (Kazuho Oku)
	- [http2] support server-push #133 (Kazuho Oku)
	- [http2] fix spurious RST_STREAMS being sent #132 (Kazuho Oku)
	- [http2] weight-based distribution of bandwidth #135 (Kazuho Oku)
	- [proxy] added configuration directive `proxy.preserve-host` #112 (Masahiro Nagano)
	- [proxy] sends X-Forwarded-For and X-Forwarded-Proto headers #112 (Masahiro Nagano)
	- [proxy] stability improvements #61 (Kazuho Oku)
	- [misc] adjustments to make the source code more analyzer-friendly #113,#117 (Nick Desaulniers, Maks Naumov)

0.9.1 2015-01-19 21:13:00+0000
	- added configuration directives: ssl/cipher-suite, ssl/ocsp-update-interval, ssl/ocsp-max-failures, expires, file.send-gzip
	- [http2] added support for draft-16 (draft-14 is also supported)
	- [http2] dependency-based prioritization
	- [http2] improved conformance to the specification
	- [SSL] OCSP stapling (automatically enabled by default)
	- [SSL] fix compile error with OpenSSL below version 1.0.1
	- [file] content negotiation (serving .gz files)
	- [expires] added support for Cache-Control: max-age
	- [libh2o] libh2o and the header files installed by `make install`
	- [libh2o] fix compile error when used from C++
	- automatically setuids to nobody when run as root and if `user` directive is not set
	- automatically raises RLIMIT_NOFILE
	- uses all CPU cores by default
	- now compiles on NetBSD and other BSD-based systems

0.9.0 2014-12-25 20:17:00+0000
	- initial release