Changes in version 2.1.8-stable (22 January 2017)

 Libevent 2.1.8-stable, it contains openssl fixes for resetting fd and using
 bufferevent_openssl_filter_new(). vagrant fixes, some build fixes, increased
 timeout for some tests (to reduce number of failures due to timing issues),
 date in RFC1123 format and running tests in parallel.

 There are highlighted changes above.

 Build fixes:
  o Fix _FILE_OFFSET_BITS redinition (solaris/autotools) (336f3b11 Azat Khuzhin)
  o util-internal: fix __func__ redefinition (netbsd) (253e7fa9 Azat Khuzhin)
  o Fix signedness differ for iov_base (solaris) (2c62062e Azat Khuzhin)
  o evutil_time: include <unistd.h> when there is only sleep()/usleep() (3e75194c Azat Khuzhin)
  o http: fix formatter for pritnf for req->ntoread (osx) (1cbf26f6 Azat Khuzhin)
 Testing environment:
  o Merge branch 'automake-tests-parallel-v4' (*includes ci bits also*) (59e217df Azat Khuzhin)
 Vagrant env fixes:
  o vagrant/netbsd: missing libtool (9c9be399 Azat Khuzhin)
  o vagrant/netbsd: more reliable way of installing packages (36da6877 Azat Khuzhin)
  o vagrant/osx: use make instead of gmake (there is no gmake) (f7c70aef Azat Khuzhin)
  o vagrant: add centos box (ca591c5b Azat Khuzhin)
 Tests:
  o test/dns: replace servname since solaris does not have "http" (d6bafbbe Azat Khuzhin)
  o test/thread: netbsd is too slow, increase timeout for conditions_simple (3c7422fc Azat Khuzhin)
  o test/dns: run async resolving after sync one (to avoid timeouts) (07862531 Azat Khuzhin)
  o test/http: turn off some tests that based on backlog filling (falky) (26f416c1 Azat Khuzhin)
 Bugfixes:
  o Merge branch 'openssl-filter-fixes-v4' (83e0f43b Azat Khuzhin)
  o Merge branch 'date-rfc1123' (68def435,4798de6c,4545807d Azat Khuzhin)
  o Merge branch 'be-openssl-fd-reset-fix-v2' (86fa0070,32adf434 Azat Khuzhin)
  o Merge branch 'openssl-1.1-init-fixes-v2' (18a161f0 Azat Khuzhin)
  o Fix incorrect MIME type (23f9a20e johnsonlee)
 Trivial fixes:
 Documentation updates:
  o Update README.md (3821cca1 Breaker)


Changes in version 2.1.7-rc (2 Novemer 2016)

 Libevent 2.1.7-rc contains openssl 1.1 support, build fixes, CI improvements
 and plus Vagrantfile for testing under multiple OS'es.


 Continious Integration:
  o Use coveralls.io via travis (9ac000c Azat Khuzhin)
  o travis-ci: use container-based infrastructure (7e12e96 Azat Khuzhin)
  o travis-ci/osx: fix compiling/linking openssl libraries (9d2f8d4 Azat Khuzhin)
  o travis-ci: use gcc-5 (fixes osx|gcc failures) (d7ceae5 Azat Khuzhin)
  o Testing with vagrant for 6 OS and cmake+autoconf (9585338 Azat Khuzhin)
  o travis-ci/osx: install lcov (e4e099b Azat Khuzhin)

 Build Improvements/Fixes:
  o Fix cmake -DEVENT__COVERAGE=ON (40fbffc Azat Khuzhin)
  o autogen.sh: learn about gmake (9376ac4 Azat Khuzhin)
  o autogen.sh: remove all autoconf/automake caches, if any (69cce25 Azat Khuzhin)
  o cmake: fix finding python2, and check that it is really 2 (3453c08 Azat Khuzhin)
  o cmake: fix CheckFunctionExistsEx/CheckPrototypeDefinition (CMP0054) (43b69b2 Azat Khuzhin)
  o cmake: cleanup (dc624ad Zonr Chang)
  o cmake/win32: fix running regress, but fixing finding python2 interpreter (bcb990a Azat Khuzhin)
  o cmake: use PYTHON_EXECUTABLE to find python2 (a4d044c Azat Khuzhin)
  o Merge branch 'force-disable-clockgettime' (83c7cdf Azat Khuzhin)

 Code Improvements (core)
  o use ev_uint16_t instead of unsigned short for port (e983712 Thomas Bernard)
  o Merge branch 'contrib-guide-v2' (b9c5077 Azat Khuzhin)
  o poll: Prevent libevent from spinning if POLLNVAL occurs (675974c Tim Hentenaar)

 Testing:
  o test/regress: cover a polling of invalid fd (cb0df5c Tim Hentenaar)

 Code Improvements (bufferevent_openssl)
  o Make it build using OpenSSL 1.1.0 (3e9e0a0 Kurt Roeckx)
  o Don't call BIO_number_{read|written} on NULL BIOs. (6702da1 Adam Langley)
  o Switch from a 512 to 2048-bit RSA key. (f9803a6 Adam Langley)

 Trivial fixes:
  o Ignore temporary configure files (8fb08ae Azat Khuzhin)
  o README.md: fix typo: ar -> are (2361616 Simone Basso)
  o be: just a simple mistake, reinclude the <errno.h> (7521664 Seven)

Changes in version 2.1.6-beta (4 July 2016)

 Libevent 2.1.6-beta contains mostly bug fixes (evbuffers, evthread, evdns,
 bufferevents, core, http, samples), improvements but mostly to fix some
 possible issues (EVHTTP_CON_LINGERING_CLOSE), a lot of new unit tests and new
 appveyor integration.

 Security Fixes (utils)
   o evutil_parse_sockaddr_port(): fix buffer overflow (329acc1 Azat Khuzhin)

 Security Fixes (evdns)
   o evdns: name_parse(): fix remote stack overread (96f64a0 Azat Khuzhin)
   o evdns: fix searching empty hostnames (ec65c42 Azat Khuzhin)

 New APIs (evdns)
   o New function to get address for nameserver. (537177d Nick Mathewson)

 New APIs (bufferevents)
   o expose bufferevent_incref/decref (with fewer modifications) (1ed6718 Mark Ellzey)

 New APIs (internal)
   o evdns: export cancel via callbacks in util (like async lib core/extra issues) (8cbe65d Azat Khuzhin)

 New APIs/Improvements (http)
   o http: take EVHTTP_CON_LINGERING_CLOSE into account for "Expect: 100-Continue" (ac448a7 Azat Khuzhin)
   o http: lingering close (like nginx have) for entity-too-large (9fde518 Azat Khuzhin)
   o http: read server response even after server closed the connection (680742e Azat Khuzhin)
   o http: export evhttp_connection_set_family() (714fc70 Azat Khuzhin)
   o http: reuse connected address only with EVHTTP_CON_REUSE_CONNECTED_ADDR (a50f5f0 Azat Khuzhin)
   o http: use IP address that we got before (if any) during retrying (54c887d Azat Khuzhin)

 Bugfixes (core)
   o Fix getaddrinfo under solaris (for multiprotocol case) (40730ae Azat Khuzhin)
   o Check for Mac OS X 10.4 kqueue bug properly (df6f99e Mark Mentovai)
   o event_reinit: make signals works after fork() without evsig_add() (88640aa Nicholas Marriott)
   o event_reinit: always re-init signal's socketpair (ad0c237 Nicholas Marriott)
   o Free event queues even for recursive finalizers (7c8d015 Azat Khuzhin)
   o Fix checking for make_base_notifiable() (f337296 Azat Khuzhin)
   o Set correct socklen for PF_INET6 sockaddr len (3499ad9 Mark Ellzey)
   o Fix garbage value in socketpair util function, stdint? (043ae74 Mark Ellzey)
   o fix the return value of event_deferred_cb_schedule_ (38cef64 Greg Hazel)
   o event_free_debug_globals_locks(): disable lock debugging (e5c87d1 Azat Khuzhin)
   o event: call event_disable_debug_mode() in libevent_global_shutdown() (941faae Azat Khuzhin)
   o ht-internal: don't reset hth_table_length explicitly in name_##HT_CLEAR (597c7b2 Azat Khuzhin)

 Bugfixes (evthread)
   o evthread: fix evthread_setup_global_lock_() for debug-lock with a real-lock case (e4556fc Azat Khuzhin)
   o evthread: evthreadimpl_disable_lock_debugging_() for libevent_global_shutdown() (ccc5593 Azat Khuzhin)

 Bugfixes (evdns)
   o evdns: avoid double-free in evdns_base_free() for probing requests (4db15e0 Azat Khuzhin)
   o evdns: evdns_base_free(): fix UAF of evdns_base with @fail_requests (00313c5 Azat Khuzhin)
   o evdns: evdns_base_free(): free requests before namservers (14f84bb Azat Khuzhin)
   o evdns: fix randomize-case by make case-insensitive as required (9c238de Azat Khuzhin)

 Bugfixes (bufferevents)
   o be_sock: handle readv() returns ECONNREFUSED (freebsd 9.2) (3189eb0 Azat Khuzhin)
   o be_filter: avoid data stuck under active watermarks (b627ad8 Eduardo Panisset)
   o Fix bufferevent_pair to properly set BEV_EVENT_{READING,WRITING} on flush. (2851889 David Paschich)
   o be_openssl: clear all pending errors before SSL_*() calls (38e0f4a Azat Khuzhin)
   o be_sock: cancel in-progress dns requests (86dfd2c Azat Khuzhin)
   o be_sock: unfreeze buffers on fd changing (255525d Azat Khuzhin)
   o be_sock: bufferevent_socket_connect_hostname(): make it thread-safe (809bb39 Azat Khuzhin)
   o be_openssl: don't call do_write() directly from outbuf_cb (da52933 Azat Khuzhin)
   o be_openssl: use bufferevent_enable() instead of bufferevent_add_event_() (0c66d32 Azat Khuzhin)
   o be_openssl: don't add events during bev creation (like be_sock) (f4b6284 Azat Khuzhin)
   o Fix lock leak in be_pair_flush() if flush type is BEV_NORMAL (f45d39d Bill Vaughan)
   o be_openssl: don't use *_auto() in do_handshake() we can't have fd == -1 there (877280d Azat Khuzhin)
   o be_openssl: don't call set_open_callbacks() if fd == -1 (e8a2da9 Azat Khuzhin)
   o be_openssl: get rid off hackish "fd_is_set", to fix some corner cases (40b0379 Azat Khuzhin)
   o be: we don't need to use getpeername() we we have conn_address (2c271e2 Azat Khuzhin)
   o Call underlying bev ctrl SET_FD on filtered bufferevents (c2aa7dc Mark Ellzey)
   o be_pair: release shared lock with the latest of bufferevent_pair (92a359e Azat Khuzhin)

 Bugfixes (http)
   o [Issue #313] set method to ASCII "NULL" if evhttp_method() returns NULL (17cc636 Mark Ellzey)
   o evhttp_have_expect(): fix -Wlogical-not-parentheses (24b5214 Azat Khuzhin)
   o http: set fd to -1 unconditioally, to avoid leaking of DNS requests (7a4b472 Azat Khuzhin)
   o http: avoid leaking of fd in evhttp_connection_free() (f0e1341 Azat Khuzhin)
   o http: get fd from be layer during connection reset (4a53c54 Azat Khuzhin)
   o http: fix EVHTTP_CON_READ_ON_WRITE_ERROR when it doesn't supported by OS (2ff164a Azat Khuzhin)
   o http: do not do function calls under EVUTIL_ASSERT() to fix NDEBUG builds (7c89999 Azat Khuzhin)
   o http: fix leaking of response_code_line (8f18a62 Azat Khuzhin)
   o http: fix "Expect: 100-continue" client side (0b46b39 Azat Khuzhin)
   o http: fix conflicts EVHTTP_CON_AUTOFREE and EVHTTP_CON_REUSE_CONNECTED_ADDR (4dc0979 Azat Khuzhin)
   o http: avoid epoll_ctl() on already closed fd (triggers by http/chunk_out) (ab3bc69 Azat Khuzhin)
   o http: install timeout for read too during connect for ssl (040000d Azat Khuzhin)
   o http: fix evhttp_request_own() by checking EVHTTP_USER_OWNED in more cases (b0d3964 Azat Khuzhin)
   o http: fix detecting EOF without write (7ed02ac Azat Khuzhin)
   o evhttp: Fix failure to send all output data for POST/PUT requests (24eea0d John Ohl)
   o Fix evhttp_uriencode() regression. (c6b1ec1 Mark Ellzey)
   o removed unused vars (e94250c Mark Ellzey)
   o pointer overflow checks for evhttp_uriencode (72afe4c Zonr Chang)

 Bugfixes (evbuffers)
   o buffer: fix overflow check in evbuffer_expand_singlechain() (a3f4ccd Azat Khuzhin)
   o buffer: evbuffer_add_buffer(): clean empty chains from destination buffer (26fd932 Azat Khuzhin)
   o Fix n_add_for_cb in evbuffer_prepend() in case of new buffer required (0abd039 Azat Khuzhin)
   o be_filter: actually disable output_filter during processing output (c031215 Simon Perreault)
   o evbuffer_add: Use last_with_datap if set, not last. (a8769ef Marcus Sundberg)
   o EVBUFFER_PTR_SET -> EVBUFFER_PTR_ADD (8674e4f jer-gentoo)

 Bugfixes (evconnlistener)
   o listener: unlock lev on error in listener_read_cb() (2a71b33 Azat Khuzhin)
   o Fix potential fd leak in listener_read_cb() (a695a72 Mark Ellzey)

 Testing
   o tests: use waitpid(..., WNOWAIT) to fix failing of main/fork under solaris (43eb56c Azat Khuzhin)
   o test: replace sleeping with syncing pair in main/fork (16d220c Azat Khuzhin)
   o test/http: do not run tests that based on backlog filling (freebsd) (500b6b7 Azat Khuzhin)
   o test/bufferevent/iocp: fix test name for "bufferevent_connect_fail_eventcb" (4410e9d Azat Khuzhin)
   o test/ssl: use send()/recv()/EVUTIL_ERR_RW_RETRIABLE()/EVUTIL_SOCKET_ERROR() to fix win32 (a9e8cd6 Azat Khuzhin)
   o test/https_basic: increase timeout for complete write (fixes win32) (d5a2f2f Azat Khuzhin)
   o test: fix building with --disable-thread-support under win32 (a487706 Azat Khuzhin)
   o test/buffer: evbuffer_add_buffer() with empty chains (a272bc4 Azat Khuzhin)
   o test/buffer: evbuffer_remove_buffer() with empty chains (prepend) (f0cfa14 Azat Khuzhin)
   o test/buffer: evbuffer_remove_buffer() with empty chains (evbuffer_add_buffer()) (2880ce6 Azat Khuzhin)
   o test/buffer: cover evbuffer_expand() for overflow (48dab7a Azat Khuzhin)
   o test/be_filter: creating test case for data stuck with active watermarks (766194b Eduardo Panisset)
   o test/http: avoid using conditionals with omitted operands (fixes VS2015) (2a4bf29 Azat Khuzhin)
   o test/http: don't mix declarations and code (fixes -Wdeclaration-after-statement) (aabf1c2 Azat Khuzhin)
   o test/buffer: fix leak in test_evbuffer_prepend() (c08d90b Azat Khuzhin)
   o test/buffer: avoid errors with --no-fork (reinitialize static vars) (e7d1e39 Azat Khuzhin)
   o test/buffer: cover n_add_for_cb when evbuffer_prepend() need to allocate buffer (e77ff41 Azat Khuzhin)
   o test/tinytest_macros: add new one tt_nstr_op() (bd19a28 Azat Khuzhin)
   o test/bufferevent: check that output_filter disabled during processing output (ae28812 Azat Khuzhin)
   o test/listener: regression for missing unlock in listener_read_cb() (7d85651 Azat Khuzhin)
   o test/regress: add tests for evbuffer_add() breakage on empty last chain (d5ee739 Marcus Sundberg)
   o test/http: fix running some tests sequential (with --no-fork) (bddad71 Azat Khuzhin)
   o test/http: localize evhttp server structure (cbc3209 Azat Khuzhin)
   o test/dns: regression for empty hostname (d7348ba Azat Khuzhin)
   o test/http: fix SERVER_TIMEOUT tests under win32 (d49a658 Azat Khuzhin)
   o test/http: add a helper for creating timedout/failed request (376f107 Azat Khuzhin)
   o test/http: adopt for C90 (mixed code and declarations) (d02a285 Azat Khuzhin)
   o test/http: cover NS timed out during request cancellations separatelly (0c343af Azat Khuzhin)
   o test/http: request cancellation with resolving/{conn,write}-timeouts in progress (334340d Azat Khuzhin)
   o test/http: exit from the loop in the errorcb to wait cancellation (927ab33 Azat Khuzhin)
   o regress_clean_dnsserver(): reset global port vars (351207f Azat Khuzhin)
   o test/http: read_on_write_error: fix it for win32 (3b58169 Azat Khuzhin)
   o test/http: separate coverage for EVHTTP_CON_READ_ON_WRITE_ERROR (5c2b4c1 Azat Khuzhin)
   o test/http: cover "Expect: 100-continue" client-server interaction (31d8116 Azat Khuzhin)
   o test/http: *lingering tests shouldn't have "Expect: 100-continue" (ed469ab Azat Khuzhin)
   o test: use EVUTIL_SHUT_WR (04fc82f Azat Khuzhin)
   o test/http: avoid huge stack allocations to fix win32 builds (3166765 Azat Khuzhin)
   o test: http/lingering_close: cover EVHTTP_SERVER_LINGERING_CLOSE (e122ca1 Azat Khuzhin)
   o test: http/non_lingering_close: cover ~EVHTTP_SERVER_LINGERING_CLOSE (f41e1b0 Azat Khuzhin)
   o test: http/*: update expected HTTP codes for body exceeds `max_body_size` (addf2b9 Azat Khuzhin)
   o test: http/data_length_constrains: set EVHTTP_CON_READ_ON_WRITE_ERROR (d38a723 Azat Khuzhin)
   o test: increase buffer size for http/data_length_constraints to trigger EPIPE (0792e1e Azat Khuzhin)
   o test/tinytest_demo: include <windows.h> for win32 to fix tdm-gcc (f062bbe Azat Khuzhin)
   o test/regress: cover event_del() waiting mechanism (5b58b70 Azat Khuzhin)
   o test/regress: cover existing signal callbacks and fork() + event_reinit() (ceddc60 Azat Khuzhin)
   o test/regress: cover signals after fork() + event_reinit() (b075b81 Azat Khuzhin)
   o test/regress: main/fork: rewrite assertions by just removing event in callback (088d8b3 Azat Khuzhin)
   o test/dns: check exit code of evdns_getaddrinfo() (0b9d432 Azat Khuzhin)
   o test/dns: cover evdns_getaddrinfo() and evdns_base_free() with @fail_requests (4ad3483 Azat Khuzhin)
   o test/dns: cover @fail_requests for evdns_base_free() (d6c6fb4 Azat Khuzhin)
   o test/dns: more graceful coverage of @fail_requests (123d372 Azat Khuzhin)
   o test/ssl: cover busy-loop (i.e. {read,write}-blocked-on-{write,read} stuff) (da0ea7a Azat Khuzhin)
   o test/http: write_during_read for https (23c77b6 Azat Khuzhin)
   o test/http: connection_fail for https (7ea26f7 Azat Khuzhin)
   o test/http: stream_out for https (ac04968 Azat Khuzhin)
   o test/http: chunk_out for https (a71ffb9 Azat Khuzhin)
   o test/regress: fix ssl-less builds (need to make this prettier) (3160716 Azat Khuzhin)
   o test/http: allow dirty shutdown for ssl to fix https_incomplete (1ede326 Azat Khuzhin)
   o test/http: https basic (59714b4 Azat Khuzhin)
   o test/http: incomplete{,_timeout} for https (615490d Azat Khuzhin)
   o test/http: add simplest test for http/https/https_dirty_shutdown (93b19dc Azat Khuzhin)
   o test/http: https: retry coverage (7c2d24a Azat Khuzhin)
   o test/http: https server support (plus some helpers) (a7088ad Azat Khuzhin)
   o test/http: more sanity checks (a27c53c Azat Khuzhin)
   o test/ssl: export getkey()/getcert()/get_ssl_ctx()/init_ssl() for https (0c4c387 Azat Khuzhin)
   o test/regress_be: basic coverage bufferevent_flush() for pair/sock layers (ad52602 Azat Khuzhin)
   o test/regress_be: socket_filter_inactive: check bufferevent after creation (f8081af Azat Khuzhin)
   o test/regress_be: cover finalizers from inactive to active queue (337684b Azat Khuzhin)
   o test/regress_buffer: fix clang compilation warnings (d8fd4c0 Azat Khuzhin)
   o test/regress_http: fix compilation warnings (-Wmissing-field-initializers) (cd422e0 Azat Khuzhin)
   o test/regress_dns: fix compilation warnings (-Wmissing-field-initializers/for) (f55db98 Azat Khuzhin)
   o tests/regress_dns: cover that randomize-case works case-insensitive (1e8bfbc Azat Khuzhin)
   o test: fix bufferevent/bufferevent_pair_release_lock in debug mode (3f749e9 Azat Khuzhin)
   o test: fix bufferevent/bufferevent_pair_release_lock for freebsd (79f9ace Azat Khuzhin)
   o test/regress_be: bufferevent_enable() shouldn't call eventcb by it's own (a0f308d Azat Khuzhin)
   o test/regress_be: introduce fake_listener_create() (37dc9e0 Azat Khuzhin)
   o test/regress_http: cover evhttp_request_own() (6f6fa0d Azat Khuzhin)
   o test/regress_http: cover write during read (3d15aeb Azat Khuzhin)
   o test/regress_http: verify that closecb will be called without multiple write (4be6c70 Azat Khuzhin)
   o test/regress: fix bufferevent_pair_release_lock with EVENT_DEBUG_MODE (6ea6655 Azat Khuzhin)
   o test/regress_ssl: check events fd/pending after timeout triggered (cdafdf0 Azat Khuzhin)
   o test/regress_ssl: cover case when server didn't up (failed with timeout) (74845f1 Azat Khuzhin)
   o test/regress_ssl: covert that we can't change fd with underlying (df507af Azat Khuzhin)
   o test/regress_ssl: cover that events (read/write) at finish not pending (762edb4 Azat Khuzhin)
   o test/regress_ssl: cover fd manipulations (b78a829 Azat Khuzhin)
   o test/regress_ssl: convert open_ssl_bufevs() to mask (46bba73 Azat Khuzhin)
   o test/regress_ssl: convert client/server to mask too (3455991 Azat Khuzhin)
   o test/regress_ssl: cover "allow_dirty_shutdown" (0430327 Azat Khuzhin)
   o test/regress_ssl: convert regress_bufferevent_openssl() to bitmask (342e116 Azat Khuzhin)
   o tests/regress_ssl: drop duplicated assert (25e56fd Azat Khuzhin)
   o test/regress_http: initialize "dns_base" to avoid reading trash (9f0bff3 Azat Khuzhin)
   o test/http: cover retrying with saved conn_address by shutting down dns server (f4874d8 Azat Khuzhin)
   o be_pair/regress: cover use of shared lock (lock/unlock/free) (a558fcd Azat Khuzhin)
   o regress_dns: drop hack for event_debug_map_HT_GROW in leak tests (3540a19 Azat Khuzhin)

 Sample code
   o Fix memory leak in signal-test.c (666db91 basavesh.as)
   o sample/hello-world: exAmple, not eXMple (2d3cd35 kirillDanshin)
   o dns-example: allow to set ns from args (df19a97 Azat Khuzhin)
   o dns-example: convert to getopt() (32f8592 Azat Khuzhin)
   o http-connect: make it win32 compilable (1bf7595 Azat Khuzhin)
   o sample/https-client: allow to change path to ca-certificates (fdf713a Azat Khuzhin)
   o sample/https-client: check for ERR_remove_thread_state() existence (c4e9d9b Azat Khuzhin)
   o sample/https-client: replace ERR_remove_state() by ERR_remove_thread_state() (77ad68a Azat Khuzhin)
   o sample/https-client: add -timeout option (4637aa8 Azat Khuzhin)
   o sample/https-client: don't try to free uninitialized SSL (f3d7ff5 Azat Khuzhin)
   o sample/https-client: graceful exit with freeing memory (to make valgrind happy) (24a1f25 Azat Khuzhin)
   o https-client: correctly handle URLs with no path (like "https://host:port") (29a0482 Andrey Skriabin)
   o sample/http-connect: don't use assert() to make it work with NDEBUG (6dc71e7 Azat Khuzhin)
   o sample/http-connect: made it compatible with C90 (f976d43 Azat Khuzhin)
   o sample: add HTTP CONNECT tunnelling example using libevent http layer (1d34498 Azat Khuzhin)
   o Update dns-example. (620ff24 Mark Ellzey)

 Documentation
   o Update README.md (b8ec70c Mark Ellzey)
   o Update README.md (80faee9 Mark Ellzey)
   o Update README.md (ad4a897 Mark Ellzey)
   o Update README.md (a2b2e1e Mark Ellzey)
   o Update README.md (0dfa5dc Mark Ellzey)

 Code Improvements (evthread)
   o evthread: add evthread_get_{lock,condition}_callbacks() helpers (c0b34f6 Azat Khuzhin)

 Code Improvements (core)
   o util: make @sa const for evutil_socket_connect_() (a8d32c2 Azat Khuzhin)

 Code Improvements (http)
   o http: assert's that evbuffer_drain() success on connection reset (2185e63 Azat Khuzhin)
   o http: introduce evhttp_request_free_() helper (22061ac Azat Khuzhin)
   o http: introduce evhttp_is_request_connection_close() helper (6540da3 Azat Khuzhin)

 Code Improvements (bufferevents)
   o be_sock: bufferevent_socket_set_conn_address(): assert instead of silent no-op (0ab88c2 Azat Khuzhin)
   o be_sock: sanity check in bufferevent_socket_set_conn_address() (eedbeff Azat Khuzhin)
   o be: replace sockaddr_storage with sockaddr_in6 for conn_address (3889612 Azat Khuzhin)
   o be: replace conn_address by full struct instead of pointer (e5615aa Azat Khuzhin)
   o bufferevent: move conn_address out from http into bufferevent (8bb3842 Azat Khuzhin)
   o be: make @sa const for bufferevent_socket_connect() (dc33c78 Azat Khuzhin)

 Cleanups (core)
   o Refactoring conditional directives that break parts of statements. (4b41eeb lzmths)
   o epoll: introduce PRINT_CHANGES() macro to avoid copy-pasting (a1b142b Azat Khuzhin)
   o tab (6e7a580 Greg Hazel)

 Cleanups (evbuffers)
   o buffer_compat: fix comment -- we have EVBUFFER_EOL_ANY not EOL_STYLE_ANY (575ff67 Azat Khuzhin)

 Cleanups (bufferevents)
   o be_sock: evutil_getaddrinfo_async_() always return 0 (dbff101 Azat Khuzhin)
   o be_sock: drop be_sock_add() macro (useless and debug unfriendly) (fad5fe2 Azat Khuzhin)
   o be: introduce bufferevent_generic_adj_existing_timeouts_() (3c1f58f Azat Khuzhin)
   o be: add_event: use evutil_timerisset() (a96b73b Azat Khuzhin)
   o be_openssl: introduce be_openssl_auto_fd() helper (2a8a711 Azat Khuzhin)
   o be_openssl: introduce set_open_callbacks_auto() (510da71 Azat Khuzhin)

 Cleanups (http)
   o http: make fallback for EVHTTP_CON_READ_ON_WRITE_ERROR more cleaner (d405492 Azat Khuzhin)
   o http: coding style issue (365f181 Azat Khuzhin)

 Cleanups (evdns)
   o evnds: inline TEST_NAME macro to make debuggin easier (0c615f4 Azat Khuzhin)

 Portability Fixes
   o [#372] check for errno.h (3031617 Mark Ellzey)
   o Fixed Unicode issue in error messages. (e8b7895 Mattes D)
   o Assume that ke_udata is an integer type on CloudABI. (5602e45 Ed Schouten)
   o Add missing include of <netinet/in.h>. (b2c68bc Ed Schouten)
   o Include <sys/ioctl.h>, <sys/resource.h> and <sys/wait.h> optionally. (c1404b5 Ed Schouten)
   o Test against SO_REUSEADDR (along with _WIN32). (ce1776c Ed Schouten)
   o Always define missing TAILQ functions from sys/queue.h (2828bdb Christopher Wiley)
   o Don't use BSD u_* types. (fd36647 Ed Schouten)
   o Remove BSD-ism: TIMEVAL_TO_TIMESPEC(). (193c7de Ed Schouten)
   o be: include all variations of headers for sockaddr_in6 struct (c212291 Azat Khuzhin)
   o be: fix sockaddr_in6 type definition for win32 (c42bc6b Azat Khuzhin)

 Continious Integration:
   o travis: split long lines, and make it cleaner (685a6a1 Azat Khuzhin)
   o travis: fix autotools on osx by reinstalling libtool (088ea5e Azat Khuzhin)
   o appveyor/autotools: link with openssl by passing LDFLAGS/CFLAGS (6fcfa25 Azat Khuzhin)
   o appveyor: image already had openssl installed (4634b85 Azat Khuzhin)
   o appveyor: check -DUNICODE -D_UNICODE according to ReleaseChecklist (cmake only) (e9acc44 Azat Khuzhin)
   o appveyor: ignore failure of mingw-get (1810857 Azat Khuzhin)
   o appveyor: drop shallow_clone, since we use tags for detecting version in cmake (ac90133 Azat Khuzhin)
   o appveyor: support cmake & autotools using build matrix (like travis-ci has) (8f95015 Azat Khuzhin)
   o travis-ci/osx: relink gcc/g++ instead of clang (481481d Azat Khuzhin)
   o travis-ci: enable multi-os mode (osx, linux) (79917e4 Azat Khuzhin)
   o travis-ci: increase matrix (--disable-foo) (59649f7 Azat Khuzhin)
   o travis-ci: adjust alignment (c8be339 Azat Khuzhin)
   o travis: add builds without debug mode into matrix (3e56da2 Azat Khuzhin)
   o test: run regress with EVENT_DEBUG_MODE=1 and without (cf2cf2a Azat Khuzhin)
   o Update travis config for status updates (37453ab Mark Ellzey)
   o Use autotools for appveyor until cmake is fixed. (1cc2e29 Mark Ellzey)
   o Fix the link for appveyor OpenSSL installer (WIN32) (107d565 Mark Ellzey)
   o Forgot to install OpenSSL for appveyor (26164a5 Joakim Söderberg)
   o Add support for appveyor.com windows CI (5f89c37 Joakim Söderberg)

 Build Improvements/Fixes:
   o evutil: mark ai_find_protocol() static (prototype-less) (5a157c8 Azat Khuzhin)
   o cmake/solaris: set CMAKE_REQUIRED_LIBRARIES to fix functions detections (dc95823 Azat Khuzhin)
   o cmake/solaris: fix building (link with socket,nsl) (050bfc7 Azat Khuzhin)
   o cmake: check for ZLIB_INCLUDE_DIR, since we can have only library without headers (c4dfb93 Azat Khuzhin)
   o autotools/win32: fix searching ssl library (671a24f Azat Khuzhin)
   o cmake/win32: do not compile regress_thread on -DEVENT__DISABLE_THREAD_SUPPORT=ON (de0c196 Azat Khuzhin)
   o cmake/win32: do not compile evthread_win32 on -DEVENT__DISABLE_THREAD_SUPPORT=ON (ecb0ec8 Azat Khuzhin)
   o cmake: fix -DEVENT__ENABLE_VERBOSE_DEBUG (typo on -DUSE_DEBUG) (e35f224 Azat Khuzhin)
   o cmake: do not use stderr for notifications/version-info (38716c6 Azat Khuzhin)
   o autoconf: fix --disable-thread-support build under win32 (bb09535 Azat Khuzhin)
   o buffer: don't mix code and declarations (8892f4c Azat Khuzhin)
   o Update gitignore file to ignore cscope gen'ed files (0aaa4fb Neeraj Badlani)
   o For non GCC/clang on OSX the -Wno-deprecated-declarations may not be valid (b5ca365 Rainer Keller)
   o automake: define serial-tests only if automake have this option (61179de Azat Khuzhin)
   o test/automake: don't use paralell test harness (since automake 1.12) (44d755e Azat Khuzhin)
   o Ignore all pkgconfig generated stuff (ce38993 Azat Khuzhin)
   o libevent_core and libevent_extra also deserve a pkgconfig file (b8d7c62 Jan Heylen)
   o Ignore verify_tests.bat (win32 version) (0f2de10 Azat Khuzhin)
   o cmake: require 3.1 only for win32 to make it work under ubunty precise (87f7238 Azat Khuzhin)
   o cmake: require at least 3.1 for target_sources() (c46ead5 Azat Khuzhin)
   o cmake: fix adding of compiler flags, and now it will (36588e1 Azat Khuzhin)
   o Replace -Wswitch-enum with -Wswitch, and add it into cmake rules too (f29f59e Azat Khuzhin)
   o test/regress_ssl: Fix compile problems for win32 (73d0360 Trond Norbye)
   o util: fix "%zu" format on TDM-gcc/MinGW-w64 (79b69d8 Azat Khuzhin)
   o cmake: don't define EVENT__NEED_DLLIMPORT always (fixes VS2013 static build) (49bd790 Azat Khuzhin)
   o Add missing return statement to del_wait_thread so libevent can build. (4f778ab Nick Mathewson)
   o cmake: fix building dns-example under win32 (missing getopt) (a1609a8 Azat Khuzhin)
   o visibility: align it to make it more readable (bb6b53d Azat Khuzhin)
   o cmake: Fix detection of ssize_t/SSIZE_T (7707f6b Azat Khuzhin)
   o Ignore more configure stuff (configure.lineno) (8d34302 Azat Khuzhin)
   o Fixed issue with cmake version generation (d56efd9 Mark Ellzey)
   o Cmake is now officially working. (7f9646d Mark Ellzey)
   o More cmake updates, lot's of missing definitions (49a5381 Mark Ellzey)
   o CMake syntax fixes fo .in files (6aad23d Mark Ellzey)
   o Revert "The Windows socket type is defined as SOCKET." (a264da8 Mark Ellzey)
   o CMAKE CMAKE CMAKE CLEANUPS (a9db46a Mark Ellzey)
   o Lot's of cmake updates (8b228e2 Mark Ellzey)
   o Provide a mechanism for building the library on Windows with different compiler flags. Add a batch file that builds it for the M[DT][d] options and performs a hunt and gather of the different output libraries. (ded8086 billsegall)
   o The Windows socket type is defined as SOCKET. (c9e6c3d billsegall)
   o autotools: fix getservbyname() detection (959a4c2 Azat Khuzhin)
   o Add missing <string.h> for openssl_hostname_validation module (3316a21 Azat Khuzhin)
   o make test/regress_ssl.c compile without warnings (9f02a44 Thomas Bernard)
   o test/regress_be: drop debug __asm__(int3) to fix arm build (8240379 Azat Khuzhin)
   o event_debug_created_threadable_ctx_: fix compilation without debug mode (a068f2e Azat Khuzhin)
   o Add a prototype for event_disable_debug_mode() (bfcedee Sebastian Hahn)
   o http: eliminate warning about "socklen" in evhttp_connection_connect_() (dfad1a4 Azat Khuzhin)
   o Updated gitignore (1dbb55d Mark Ellzey)
   o Update bench_httpclient.c (cb96931 Seungmo Koo)
   o *fix: bench_httpclient to support win32 (4e9325e zeliard)
   o Commented out a WIN32 threading / timing test for now (e84e269 Mark Ellzey)
   o Fix mixed declarations and code (forbidden by ISO C90) (0c7f217 Thomas Bernard)
   o Fix "function declaration isn’t a prototype" (746d2c5 Thomas Bernard)
   o This fixes a bug introduced in 27bd9faf498b91923296cc91643e03ec4055c230 (19ba454 Joakim Söderberg)
   o changed strtotimeval signature as per #211 (bdbc823 Xiao Bao Clark)
   o Added cmake-generated files to ignore list. (6c12bfe Matyas Dolak)
   o Ignore `make dist` generated files (8a2c6c7 Azat Khuzhin)

  Debugging
   o Debug mode option to error on evthread init AFTER other event calls. (dcfb19a Mark Ellzey)



Changes in version 2.1.5-beta (5 January 2015)

 Security Fixes (evbuffers)
   o Avoid integer overflow bugs in evbuffer_add() and related functions.  See CVE-2014-6272 advisory for more information. (d49bc0e88b81a5812116074dc007f1db0ca1eecd)

 New APIs (evconnlistener)
   o Provide support for SO_REUSEPORT through LEV_OPT_REUSABLE_PORT (b625361 Maciej Soltysiak)

 Bugfixes (core)
    o Fix use-after-free error in EV_CLOSURE_EVENT callback (3cc0eac John Ohl)
    o Fix race caused by event_active (3c7d6fc vjpai)

 Bugfixes (evbuffer)
   o Fix evbuffer_peek() with len==-1 and start_at non-NULL. (ba59923)
   o Consistently check for failure from evbuffer_pullup() (60f8f72)
   o Fix evbuffer_peek() with len==-1 and start_at non-NULL. (fb7e76a)

 Bugfixes (windows, IOCP)
   o be async: avoid double close() (f133b86 Azat Khuzhin)

 Bugfixes (bufferevents)
   o Fix issue #127, double free for filterevents that use BEV_OPT_CLOSE_ON_FREE (2c82aa0 John Ohl)
   o make bufferevent_getwatermark api more robust (a21e510 ufo2243)
   o [Bugfix] fix bufferevent setwatermark suspend_read (b34e4ac ufo2243)
   o bufferevent_openssl: reset fd_is_set when setfd with -1 is called (3da84c2 Azat Khuzhin)
   o Fix compilation for older OpenSSL versions. (5c7282f Joakim Soderberg)

 New APIs (evhttp)
   o Add evhttp_connection_set_family() to set addrinfo->family for DNS requests (12c29b0 Azat Khuzhin)
   o Implement interface that provides the ability to have an outbound evhttp_connection free itself once all requests have completed (2b9ec4c,10fe4f John Ohl)

 New APIs (core)
   o Implement new/free for struct evutil_monotonic_timer and export monotonic time functions (f2645f8 Andrea Shepard)

 Bugfixes (evdns)
   o Load hosts file on Windows. (a0b247c Vilmos Nebehaj)
   o Don't truncate hosts file path on Windows. (d0dc861 Vilmos Nebehaj)
   o Fix a crash in evdns related to shutting down evdns (9f39c88,e8fe749)
   o evdns: avoid read-after-free in evdns_request_timeout_callback() (61262a0 Azat Khuzhin)
   o Correctly handle allocation failures in evdns_getaddrinfo (6a53d15)
   o evdns: fix EVDNS_BASE_DISABLE_WHEN_INACTIVE in case retransmit/retry (74d0eee Azat Khuzhin)
   o evdns: add retry/reissue tests for EVDNS_BASE_DISABLE_WHEN_INACTIVE (3ca9d43 Azat Khuzhin)
   o evdns: fail ns after we are failing/retrasmitting request (97c750d Azat Khuzhin)

 Bugfixes (evhttp)
   o http: reset connection before installing retry timer (fix http retries handling) (bc79cc5 Azat Khuzhin)


 Testing
   o regress_dns: fix leaks in getaddrinfo_async{,_cancel_stress} tests (2fdc5f2 Azat Khuzhin)
   o test: add family argument for http_connection_test_() (177b8a7 Azat Khuzhin)
   o test: add regress for evhttp_connection_set_family() with AF_INET and AF_UNSPEC (42aefeb Azat Khuzhin)
   o test/http: add regress test for set family to AF_INET6 (3fbf3cc Azat Khuzhin)
   o Update to a more recent tinytest_macros. (8da5a18)
   o test/regress: add simplestsignal: to track reorder bugs separately (b897bef Azat Khuzhin)
   o test/evbuffer_peek: add regress in case we have first buffer greater (e2d139d Azat Khuzhin)
   o More evbuffer_peek() test cases (154006a)
   o use correct tt macro for pointer compare (08c88ea)
   o regress_buffer: fix 'memcmp' compare size (79800df Maks Naumov)
   o Fix a use-after-free in unit tests. CID 752027 (3739057)
   o Fix a dead-code warning in unit tests. CID 1193548 (c119f24)
   o Use evutil_weakrand() in unit tests. (a677b72, 364c110)
   o Use a more precise calculation for max in time-ratelim.c (ca5b5c7)
   o Make a buffer larger in the tests to avoid a scary evbuffer_copyout_from() (fb57b8b)
   o Fix several memory leaks in the unit tests. (89c1a3b)
   o Add test for evhttp_connection_free_on_completion (b0e9924 John Ohl)
   o Fix annoying heisenbug in test-time.c (cb73704)

 Sample code
   o Make http-server.c output into good html5 (6d72bdc)
   o Use FindClose for handle from FindFirstFile in http-server.c (6466e88)
   o https-client: add -retries argument, for connection retries (d9da844 Azat Khuzhin)

 Bugfixes (build)
   o Add missing headerfile for cmake (15d90cc Trond Norbye)
   o ignore one more test binary (b6593aa Michael Richardson)
   o ignore config.cache/test-driver files (c83f333 Mike Frysinger)
   o add a --disable-samples configure flag (0c492b3 Mike Frysinger)
   o Add a few files created by "make verify" to .gitignore. (1a8295a Pierre Phaneuf)
   o updates in cmake build (27bd9fa Sergey Nikulov)
   o Fix cmake error when the Module path has more than one entry. (befbd13 Acer Yang)
   o Fix CMake shared library build (e69d910 Nobuaki Sukegawa)
   o Fix warnings when compiling with clang 3.5 (f5b4765 John Ohl)
   o Fix mixed declarations and code (forbidden by ISO C90) (8afbdbc Thomas Bernard)

 Bugfixes (miscellaneous)
   o tree.h: drop duplicated content of tree.h (6193187 Azat Khuzhin)
   o evdns: disable probing with EVDNS_BASE_DISABLE_WHEN_INACTIVE (610410b,ad0493e,fea86a6,d83b337,5ca9e97 Azat Khuzhin)
   o [Bugfix] fix grammer error (3a4d249 ufo2243)
   o Change return type of evutil_load_windows_system_library_ to HMODULE (f691389)
   o Fix a c90 warning (76643dd)
   o Fix a typo in a doxygen comment. Reported by 亦得. (be1aeff)
   o remove trailing comma from enum (b361b8a Jean-Philippe Ouellet)

 Bugfixes (FreeBSD)
   o Handle ENOTCAPABLE from FreeBSD - this is returned if an event in the changelist is for an FD that has been closed. (6fd7394 Adrian Chadd)



Changes in version 2.1.4-alpha (21 Mar 2014)

 Libevent 2.1.4-alpha adds a number of new miscellaneous APIs to make
 Libevent more useful, including support for early close detection with
 epoll via EPOLLRDHUP, triggering bufferevent callbacks, adding more
 evhttp callbacks, and more. There are also numerous bugfixes, including
 a number for finalize-related issues from 2.1.3-alpha; and an
 alternative (non-primary!) cmake-based build mechanism.

 New APIs (core)
   o Added event_base_get_num_events() (0fa107d Mobai Zhang)
   o New event_base_active_by_fd API (865a142 Greg Hazel, 5c9da9a, 87fa2b0)
   o Add event_base_active_by_signal by analogy (4865943)
   o Add access to max event count stats (5173bef, efbd3dc, 26230a2
     Andrew Sweeney)
   o Implemented EV_CLOSED event for epoll backend
     (EPOLLRDHUP). (b1b69ac Diego Giagio, 53d2793, 43ffcf6, dfe1e52
     Marcin Juszkiewicz, ff26633 Joakim Soderberg, 3908a5e)

 New APIs (evutil_secure_rng)
   o Add evutil_secure_rng_set_urandom_device_file (2bbb5d7)

 New APIs (bufferevents)
   o Add function to fetch underlying ratelimit cfg (4b3d5af Mark Ellzey)
   o Pass and return const for bufferevent_get_token_bucket_cfg (1c77fbb
     Mark Ellzey)
   o Add watermark introspection (4ce242b Ondřej Kuzník)
   o Add an option to trigger bufferevent I/O callbacks (61ee18b Ondřej Kuzník)
   o Add an option to trigger bufferevent event callbacks (a7384c7
     Ondřej Kuzník)
   o Clarifications in response to merge req. comments (bd41947 Ondřej
     Kuzník)
   o Minor optimizations on bufferevent_trigger options (a3172a4)

 New APIs (evhttp)
   o Add evhttp_connection_get_server(). (a7f82a3 Maxime Henrion)
   o add a http default content type option (5a5acd9 Nicolas Martyanoff)
   o http: implement new evhttp_connection_get_addr() api. (0c7f040 Azat
     Khuzhin)
   o Add a variant of evhttp_send_reply_chunk() with a callback on
     evhttp_write_buffer() (8d8decf Julien BLACHE)
   o Allow registering callback for parsing HTTP headers (b0bd7fe Balint Reczey)
   o Provide on request complete callback facility (b083ca0 Andrew Sweeney)
   o evhttp_request_set_on_complete_cb to be more specific about what
     the function actually does and usage (da86dda Andrew Sweeney)
   o Update unit test to make sure that the callback happens after the
     output data is written (b85f398 Andrew Sweeney)

 Features (evdns)
   o bug fix for issues #293 evdns_base_load_hosts doesn't remove
     outdated addresses (954d2f9, f03d353, 45eba6f Kuldeep Gupta)

 Features: (cmake build support)
   o Initial CMake commit. (e415196 Joakim Soderberg)
   o Add all tests and benchmarks to CMake project. (e9fc014 Joakim Soderberg)
   o More work on adding tests to CMake project (99c1dc3 Joakim Soderberg)
   o Generate a dummy evconfig-private.h so things build
     properly. (ce14def Joakim Soderberg)
   o Link libm on unix platforms. (58fcd42 Joakim Soderberg)
   o Added some GCC specific options. (19222e5 Joakim Soderberg)
   o Use evutil_closesocket instead. (dbf2b51 Joakim Soderberg)
   o Add copyright and licensing files for CMake modules. (c259d53
     Joakim Soderberg)
   o Only include WIN32 getopt where it is used. (9bbce0b Joakim Soderberg)
   o Fix bench_cascade program on Windows. (78da644 Joakim Soderberg)
   o Don't segfault on no found event backend. (8f2af50 Joakim Soderberg)
   o Only test the event backends available on the system. (7ea4159
     Joakim Soderberg)
   o Added a "make verify" target. (e053c4f Joakim Soderberg)
   o Fix the make "verify" target on Windows. (67e5d74 Joakim Soderberg)
   o Get rid of deprecation warnings for OpenSSL on OSX 10.7+ (69c3516
     Joakim Söderberg)
   o Fix kqueue support. (a831f2f Joakim Söderberg)
   o Added a test for testing if kqueue works with pipes. (2799b35
     Joakim Söderberg)
   o Change the BSD license from 4 to 3-clause. (86df3ed Joakim Soderberg)
   o Minimum required python version is 2.4. (968e97b Joakim Soderberg)
   o Get rid of unknown pragma warnings. (0ef1d04 Joakim Soderberg)
   o Add a "make verify_coverage" target generation coverage
     info. (f2483f8 Joakim Soderberg)
   o Fix the "make verify" target on NetBSD (4ac086a Joakim Soderberg)
   o Only look for ZLib when it is used (if tests are
     included). (f780593 Joakim Soderberg)
   o Added EVENT__ENABLE_GCC_WARNINGS, turns all warnings into
     errors. (dd413bd Joakim Soderberg)
   o Add CMake config and install targets. (f3446ed Joakim Soderberg)
   o Fix typo (4b754df Joakim Soderberg)
   o Some work on making it possible to simply do add_subdirectory() on
     the project. (49ab363 Joakim Soderberg)
   o Set USE_DEBUG=1 on EVENT__ENABLE_VERBOSE_DEBUG (fd42e70 Joakim Soderberg)
   o Fix so that old nmake project still builds. (24d6466 Joakim
     Soderberg)
   o Rename README to README.md and use markdown to format. (d2bc39a
     Joakim Soderberg)
   o Update README with CMake build instructions. (604b8cc Joakim Soderberg)
   o Clean up the README some. (8d4cb35 JoakimSoderberg)
   o Forgotten headers for old nmake project compatability. (8697b99
     Joakim Soderberg)
   o Change all uses of WIN32 to _WIN32 (4e14395 Joakim Söderberg)
   o Fix include bug. (2024467 Joakim Söderberg)
   o Check if we're on OSX before disabling deprecation in le-proxy
     (8b40a5b Joakim Söderberg)
   o Fix broken autotools build. (ae1bd82 Joakim Söderberg)
   o Disclaimerize cmake a little in the README (d03b5bf)
   o Fix CMake compile when OpenSSL is disabled. (e423d42 Joakim
     Söderberg)
   o CMake: Get rid of python not found warning when regress tests
     turned off. (d38d798 Joakim Söderberg)
   o Fix https-client compilation on Windows. (d7be788 Joakim Soderberg)
   o Guard against EVENT_NOWIN32 being set during testing. (f1715b4
     Joakim Soderberg)
   o Check for OSX when checking for clang. (e212c54 Joakim Soderberg)
   o Added a Travis-CI configuration file. (8c0f0a9 Joakim Soderberg)
   o Added -Qunused-arguments for clang on macosx (ed99d92 Trond Norbye)
   o Rename event_extras to event_extra (a0dd5df Trond Norbye)
   o Add option to build shared library (4545fa9 Trond Norbye)
   o Add -Qunused-arguments for clang on macos (b56611d Trond Norbye)
   o Add cmake-related files to .gitignore (e061321 Trond Norbye)
   o Export event_extra not event_extras. (2b41bcf Joakim Söderberg)

 Bugfixes (core)
   o If evsel->del() fails, don't leave the evmap in an inconsistent
     state (9b5a527 Maxime Henrion)
   o Move event_debug_note_teardown_ before mm_free. (69b5c64)
   o Check CLOCK_MONOTONIC_* at runtime if needed. (911abf3)
   o Fix reinit of fds with EV_WRITE but not EV_READ. (ebfd8a8 maksqwe)
   o Tweaked callbacks to prevent race condition
     (https://github.com/libevent/libevent/issues/104) (40830f1, 2ea15ed
     John Ohl)
   o Move assert(ev) to before we use ev in EV_CLOSURE_EVENT_FINALIZE
     case (9805972)

 Bugfixes (evhttp)
   o Fix a double close() bug in evhttp when the underlying bufferevent uses
     BEV_OPT_CLOSE_ON_FREE. (31db8a0 Maxime Henrion)
   o Fix an unlikely but possible error case for http connections (f22049e)
   o Avoid racy bufferevent activation (5eb1788 Nate Rosenblum)

 Bugfixes on 2.0 (Windows)
   o Use windows vsnprintf fixup logic on all windows environments (e826f19)
   o libevent/win32_dealloc() : fix sizeof(pointer) vs sizeof(*pointer)
    (b8f5980 Frank Denis)

 Bugfixes (evutil_secure_rng)
   o When we seed from /proc/sys/kernel/random/uuid, count it as success
     (e35b540)
   o We should return after arc4random_buf() (1ea1f26 Makoto Kato)
   o Avoid other RNG initialization FS reads when urandom file is
     specified (9695e9c)
   o Really remove RNG seeds from the stack (f5ced88)
   o Fix another arc4random_buf-related warning (e64a2b0)

 Bugfixes (bufferevents)
   o Initialize async bufferevent timeout CBs unconditionally (af9b2a7)

 Bugfixes (evdns)
   o Checking request nameserver for NULL, before using it. (5c710c0
     Belobrov Andrey)
   o Fix SEGFAULT after evdns_base_resume if no nameservers
     installed. (14971a8 Azat Khuzhin)
   o Actually use the log facility for reporting evdns problems. (e1766a1)
   o Fix SEGFAULT after evdns_base_resume if no nameservers
     installed. (f8d7df8 Azat Khuzhin)
   o fix for ServFail from RIPE Atlas release (62f596b Antony Antony)

 Bugfixes (compilation)
   o Fix test compilation with nmake: add the gdi.lib dependency (5ba8ab7)
   o Whoops. It is gdi.lib, not gdi32.lib. (github issue #61) (8ab612e)
   o Don't use return since return type is void and build error occurs
     using clang (838161d Makoto Kato)
   o Use void casts to suppress some "unchecked return value" warns (7080d55)
   o rpcgen: Generate regress.gen.[c,h] in build rather than src dir
     (243386c Ross Lagerwall)
   o Fix a compiler warning when checking for arc4random_buf linker
     breakage. (5cb3865)
   o Fix 'make distcheck' by adding regress.gen.[ch] to DISTCLEANFILES
    (239d834)

   o Fix a c90 warning (c207682)
   o Fix consts in WIN32-Code/getopt*.[ch] (57abb35)

 Bugfixes (locks, synchronization)
   o Missed lock acquire/release in event_base_cancel_single_callback_()
     (d3d999a Azat Khuzhin)
   o Fix locking in bufferevent_get_options_(). (dbc9cd4 Maxime Henrion)

 Bugfixes (leaks)
   o Avoid leaking segment mappings when offset is not a page multiple (d409514)

 Testing
   o Add tests for evdns_base_resume(). (1cd9ff5 Azat Khuzhin)
   o Fix dns/leak_resume_send_err test. (7e876df Azat Khuzhin)
   o Add checks for evhttp_connection_get_server() in unit
     tests. (fbc323b Maxime Henrion)
   o Fix a (failure-only) null dereference in the unit tests (1104d0b)
   o Fix a logic error in test_evbuffer_freeze (7765884)
   o Add missing check to test_evbuffer_file_segment_add_cleanup_cb (eba4506)
   o Fix some crash-on-fail cases in DNS regression tests (87cd6f0)
   o DNS tests: add a missing check (f314900)
   o Finalize tests: add a missing check (82b6956)
   o test_evutil_rtrim: add another missing check. (e193c95)
   o regress_main: logging all if env EVENT_DEBUG_LOGGING_ALL isset
     (611e28b Azat Khuzhin)
   o regress_http: add tests for evhttp_connection_get_addr() (4dd500c
     Azat Khuzhin)
   o Update to the latest version of tinytest (7a80476)
   o Heap-allocate zlib data structure in regress_zlib tests (4947c18)

 Performance tweaks (core)
   o Avoid redundant syscall to make a nonblocking socket nonblocking
     (42c03da Maxime Henrion)
   o Avoid redundant syscall if making a socket cloexec twice (1f29b18)
   o Avoid redundant invocations of init_extension_functions for IOCP (3b77d62)

 Documentation
   o Document that arc4random is not a great cryptographic PRNG. (6e49696)
   o Small doxygen tweaks (6e67b51)
   o Try another doxygen tweak (ccf432b)
   o Clarify event_base_loop exit conditions (031a803)
   o Fix a typo (be7bf2c Ondřej Kuzník)
   o Document deferred eventcb behaviour (13a9a02 Ondřej Kuzník)
   o Typo fixes from Linus Nordberg (cec62cb, 8cd695b)
   o Fix duplicate paragraph in evbuffer_ptr documentation (58408ee)

 Code Improvements (coverity)
   o Fix a pile of coverity warnings in the unit tests (867f401)
   o Fix coverity warnings in benchmark tools. (ff7f739)
   o Whoops; fix compilation in bench.c (544cf88)
   o Remove spurious checks in evrpc.c error cases (coverity) (991b362)
   o Fix a couple of compilation warnings in regress_http.c (860767e)
   o Fix even more coverity warnings. (d240328)
   o Stop checking for inet_aton; we don't use it. (f665d5c)
   o Add an include to evrpc-internal to fix openbsd compilation warning
     (5e161c6)

 Cleanups
   o Remove an unreachable return statement in minheap-internal.h (e639a9e)
   o Refactor evmap_{io,signal}_active_() to tolerate bad inputs (974c60e)
   o Fix needless bufferevent includes in evdns.c (254c04e)
   o Fix a couple of "#ifdef WIN32" instances (88ecda3)
   o Remove unneeded declaration in bufferevent-internal.h (4c8ebcd)

 Sample code
   o le-proxy: Fail more gracefully if opening listener fails (44b2491)
   o http-server: drop uri_root from base_url in http-server. (6171e1c Azat Khuzhin)
   o https-client: POST supported, args supported (c5887f7 Alexey Ozeritsky)
   o https-client: code cleanup (29af65e Alexey Ozeritsky)
   o https-client: Small tweaks to https-client.c (90786eb)
   o https-client: Set hostname for SNI extension (by f69m) (d1976f8)
   o https-client: add a cast to https-client.c (462e6b6)



Changes in version 2.1.3-alpha (1 May 2013)

 Libevent 2.1.3-alpha fixes various bugs, adds new unit tests, and cleans
 up the code in a couple of places. It has a new callback in evhttp for
 reporting errors during a request, a new feature for allowing evdns to
 not keep the event_base looping when there are no requests inflight, and
 example code for writing an https client.

 Libevent 2.1.3-alpha also has an important new (experimental) event
 finalization feature to allow safe event teardown in multithreaded
 programs. This ought to fix the longstanding bug with deadlocks in
 multithreaded use of SSL-based bufferevents that some people have been
 experiencing since Libevent 2.0.


 Core (event finalization)
   o Implement event_finalize() and related functions to avoid certain
     deadlocks (8eedeab)
   o Use finalization feature so bufferevents can avoid deadlocks (02fbf68)
   o Always run pending finalizers when event_base_free() is called (e9ebef8)
   o Remove bufferevent_del_generic_timeout_cbs as now unused (4ea4c6a)
   o More documentation for finalization feature (a800b91)
   o Make the event_finalize* functions return an error code (5d11f4f)
   o Mark the finalize stuff as experiemental in case it needs to
     change (23e2e29)

 Evdns
   o evdns: New flag to make evdns not prevent the event loop from
     exiting (6b7fa62 Azat Khuzhin)

 Bugfixes (Core)
   o Make event_remove_timer behave correctly with persistent timers (5623e80)
   o Unit test for event_remove_timer with EV_PERSIST. (96150dd)
   o Double-check next timeout when adding events (9443868 Nate Rosenblum)
   o event_base_update_cache_time should be a no-op if the loop isn't
     running (5e6fa2a)

 Bugfixes (evhttp, crash fix, from 2.0)
   o fix #73 and fix http_connection_fail_test to catch it (b618204 Greg Hazel)

 Bugfixes (compilation and portability, from 2.0)
   o Fix compilation with WIN32_HAVE_CONDITION_VARIABLES enabled (7e45739)
   o Fix missing AC_PROG_SED on older Autoconfs (9ab2b3f Tay Ray Chuan)
   o Backport libevent to vanilla Autoconf 2.59 (as used in RHEL5)
     (74d4c44 Kevin Bowling)
   o Use AC_CONFIG_HEADERS in place of AM_CONFIG_HEADERS for autmake
     1.13 compat (817ea36)
   o Rename configure.in to configure.ac to appease newer autoconfs (0c79787)
   o Avoid using top_srcdir in TESTS: new automakes do not like this (a55514e)

 Bugfixes (resource leaks/lock errors on error, from 2.0)
   o Avoid leaking fds on evconnlistener with no callback set (69db261)
   o Avoid double-close on getsockname error in evutil_ersatz_socketpair
     (0a822a6)
   o Fix a locking error in bufferevent_socket_get_dns_error. (0a5eb2e)

 Documentation Fixes (from 2.0)
   o Fix a mistake in evbuffer_remove() arguments in example http server code
     (c322c20 Gyepi Sam)
   o Fix a typo in a comment in buffer.h. Spotted by Alt_F4 (773b0a5)

 Documentation Fixes
   o minor documentation typos (809586a Patrick Pelletier)
   o Fix cut-and-paste err in whatsnew-2.1 (49905ac)
   o Fix comment to refer to sample/include.am correctly (9e8cdf3 Sebastian
     Hahn)
   o Fix typo : Dispatching instead of Dispaching (0c2bacc Volker Lendecke)
   o fix some hinky indentation in evhttp_make_request (80e220e Patrick
     Pelletier)
   o "buffer" spelling (a452811 Patrick Pelletier)
   o Specify return behavior in header for evbuffer_pullup() in corner case
     (cf8d1cd Dan Petro)
   o Clarify an important point about event_base_foreach_event() (920a5e6)

 Compilation Fixes/Tool Support
   o avoid valgrind false positive by zeroing epoll_event (1258614 Patrick
     Pelletier)
   o Fix harmless clang enum warning (b452a43 Sebastian Hahn)
   o remove all exes on "make clean", not just regress.exe (974bfa0 Patrick
     Pelletier)
   o Make --disable-libevent-regress work again (787fd74)
   o Do not build strlcpy.c when it will have no code. (4914620)

 Portability Fixes
   o When EWOULDBLOCK is not EAGAIN, treat it as equivalent to it (bf7a0ff)
   o Preliminary changes for Minix3. (0dda56a Nicholas Heath)
   o Use AC_CONFIG_HEADERS in place of AM_CONFIG_HEADERS for autmake 1.13
     compat (bf278b)
   o Avoid using $(top_srcdir) in TESTS. (2863c83)
   o build test/test-script.sh on systems with a less-featureful $< (f935e21)
   o Implement EVUTIL_ERR_IS_EAGAIN on windows. (42aaf4d)

 Evhttp changes:
   o Fix ipv6 support for http. When URL contain domain, not IP
     address. (71e709c Azat Khuzhin)
   o uri decode: fix for warning "use of uninitialised value" (64b6ece Azat
     Khuzhin)
   o uri decode: changed the test for the existence of the next character
     (e1903e3 Azat Khuzhin)
   o Move prototype of evhttp_decode_uri_internal() to http-internal.h
     (de8101a Azat Khuzhin)
   o Test: decoding just part of string with evhttp_decode_uri_internal()
     (1367653 Azat Khuzhin)
   o Add new error_cb for actual reporting of HTTP request errors. (7b07719
     Azat Khuzhin)
   o Add test for EVREQ_HTTP_REQUEST_CANCEL into http_cancel_test() (862c217
     Azat Khuzhin)
   o Drop extra header http_struct.h from regress_http.c (54cc800 Azat Khuzhin)

 Testing
   o Add regress test ipv6_for_domain. (9ec88bd Azat Khuzhin)
   o Add an environment variable (EVENT_DEBUG_MODE) to run unit tests in debug
     mode (2fad0f3)
   o Add a test with an active_later event at event_base_free time. (1c3147f)
   o Make all tests pass under EVENT_DEBUG_MODE=1 (b1b054f)
   o Add some verbose notes to bufferevent unit tests (9d893c9)
   o New test for active_later->active transition on event_active (a153874)
   o New tests for event_base_foreach_event() (0b096ef)
   o Unit tests for event_base_gettimeofday_cached() and
     event_base_update_cache_time() (30ea291)
   o A test for event_get_assignment() (f09629e)
   o More unit tests for initializing common timeouts. (d596739)
   o Fix a bug in the new main/event_foreach test (702c9aa)

 Windows:
   o use FormatMessage for winsock errors (0c6ec5d, 2078e9b, 4ccdd53, c9ad3af
     Patrick Pelletier)
   o a program to print out the error strings for winsock errors (7296512
     Patrick Pelletier)
   o Fix a warning introduced in 0c6ec5d8 (eeb700c)
   o Fix another warning introduced in 0c6ec5d8 (ed26561)

 Examples (http)
   o Add sample/https-client.c, an example of stacking evhttp as a client on
     top of bufferevent_ssl. (be46c99 Catalin Patulea)
   o use ${OPENSSL_LIBS} instead of -lssl -lcrypto (bf31fa5 Patrick Pelletier)
   o https-client was putting newlines at 256-byte boundaries (42d7441 Patrick
     Pelletier)
   o better handling of OpenSSL errors (5754d96 Patrick Pelletier)
   o use Debian's default root certificate location (aacd674 Patrick Pelletier)
   o use iSECPartners code to validate hostname in certificate (64d9f16
     Patrick Pelletier)
   o avoid sign mismatch warning in openssl_hostname_validation.c (6021cb5
     Patrick Pelletier)
   o pull in wildcard matching code from cURL (4db9da6 Patrick Pelletier)
   o Another tweak to https-client.c (95acdaa)
   o Remove http_struct.h usage in sample/https-client.c (8a90a85)



Changes in version 2.1.2-alpha (18 Nov 2012)

 Libevent 2.1.2-alpha includes more portable for monotonic timers,
 refactors much of Libevent's internal and external infrastructure,
 closes some longstanding gaps in the interface, makde other
 improvements.  Ths log below tries to organize features by rough area of
 effect.  It omits a few commits which were pure bugfixes on other commits
 listed below.  For more detail, see the git changelogs.  For more
 insight, see the "whatsnew-2.1.txt" document included in the Libevent
 2.1.2-alpha distribution.

 Libevent 2.1.2-alpha also includes all changes made in 2.0.19-stable
 through 2.0.21-stable inclusive.

 Performance (core):
   o Replace pipe-based notification with EVFILT_USER where possible. This
     should make multithreaded programs on OSX and *BSD alert the main thread a
     little faster. (53a07fe)
   o Make th_base_lock nonrecursive. (9cd5acb)

 New/Changed API Functions:
   o New event_get_priority() function to return an event's priority (f90e255)
   o Add a bufferevent_get_priority() function (bd39554)
   o Add an event_base_loopcontinue() to tell Libevent to rescan for more
     events right away (7d6aa5e)
   o Add a new callback to get called on evbuffer_file_segment free
     (e9f8feb yangacer, 64051b9)
   o Expose event_base_foreach_event() as a public API. (84fd6d7 Roman
      Puls, 232055e, ffe1643)
   o Add an event_remove_timer() to remove timer on an event without
     deleting it (e3b2e08)
   o Make bufferevent_set_timeouts(bev, NULL, NULL) have plausible
     semantics (9dee36b)
   o Rename event_enable_lock_debuging() to ..._debugging(). (The old name
     should still work.) (07e132e)
   o Add missing implementation for event_enable_debug_logging (3b3e21d)

 PORTABLE MONOTONIC TIMERS:

   Libevent 2.1.2 includes internal support for monotonic timers on
   (nearly) all supported platforms, including Windows, and OSX.  Libevent
   applications should now be more resilient to jumps forwards or backwards
   in the system clock.  Also, on Linux systems with epoll, we now
   optionally support microsecond-level timeouts (whereas epoll only
   supports millisecond-precision timeouts).

   o Use mach_absolute_time() for monotonic clock support on OSX. (b8fd6f9)
   o Do not track use_monotonic field when is no monotonic clock (cb653a0)
   o EVENT_BASE_FLAG_PRECISE_TIMER indicates we want fine timer precision
     (ddd69d3)
   o On Linux, use CLOCK_MONOTONIC_COARSE by default (55780a7)
