                                                         -*- coding: utf-8 -*-
Changes with Apache Traffic Server 3.3.1

  *) [TS-1608] IpAllow should use standard config update

  *) [TS-1580] Mutex leak plugged.

  *) [TS-1596] Added channel_stats plugin to experimental.
     Author: Conan Wang.

  *) [TS-1607] decouple SSL certificate lookup

  *) [TS-1506] %<cquuh> log symbol will crash TS when requesting a SSL url.
     Author: Conan Wang.

  *) [TS-1594] ProxyMutexPtr and Ptr<ProxyMutex> are identical

  *) [TS-1591] gzip plugin should load relative config file

  *) [TS-1582] C++11 requires space between strings and format specifiers
     Author: Luca Rea

  *) [TS-1491] Browser always prompts for authentication (NTLM).
     Author: Yakov Kopel.

  *) [TS-1553] Detect and build C++11 dependencies

  *) [TS-1576] reload splitdns.config at runtime
     Author: Ethan Lai <yzlai@yahoo.com>

  *) [TS-1551] reload ssl_multicert.config at runtime
     Author: Ethan Lai <yzlai@yahoo.com>

  *) [TS-1572] Plugin response status change can trigger ATS assertion
     Author: Uri Shachar

  *) [TS-1433] to make read from writer work

  *) [TS-1564] fix the rolling of Logs created via the API in plugins
     Author: Craig Forbes <cforbes at qualys dot com>

  *) [TS-1565] TSStringPercentEncode returns one character short in no-op
   case (no encoding needed). Author: Thach Tran <tranngocthachs at gmail
   dot com>.

  *) [TS-1561] Plugin esi - Enhancements on ESI plugin
     Author: Kit Chan <chanshukit at gmail dot com>
             Yu Qing <zhuangyuan at taobao dot com>

  *) [TS-1560] plugins need memory barriers for ARM

  *) [TS-1558] use_client_addr breaks control over upstream HTTP protocol
   version.

  *) [TS-207] Add raw disk support for FreeBSD

  *) [TS-1494] sslCa should be set NULL after parseConfigLine in
   SSLCertLookup.cc.

  *) [TS-1382] make jtest 64bit nice

  *) [TS-1550] remove unnecessary USE_CONFIG_PROCESSOR define

  *) [TS-1549] Drop MakeErrorVA, enabling body_factory by default

  *) [TS-1548] Update documentation for ip_allow.config
     Author: Nick Berry

  *) [TS-1223] fix the crash in http_ui show network connections

  *) [TS-1543] Enable non-debug logging for rfc5861 plugin

  *) [TS-1512] get volume & hosting work with cluster

  *) [TS-1542] Fix so that rfc5861 plugin will compile against older
   versions of TS.

  *) [TS-1446] Make sure age header is enabled in rfc5861 plugin

  *) [TS-1539] Update build package list in README

  *) [TS-1535] FetchSM process_fetch_write should ignore event
   TS_EVENT_VCONN_WRITE_READY.

  *) [TS-1534] implement the interim cache for ESI parser result

  *) [TS-1501] vc`s inactivity_timeout event should be schedule in vc`s
   thread.

  *) [TS-1503] make Event::schedule simple and efficient
     Author: KuoTai

  *) [TS-1532] make esi plugin support cookie sub keys

  *) [TS-1526] SNI support breaks IP-based lookup

  *) [TS-1513] SPDY plugin crashes on connection close

  *) [TS-1516] use_client_addr breaks parent proxy configuration
     Author: Uri Shachar.

  *) [TS-1518] detect header_rewrite plugin boost dependency

  *) [TS-1003] make Prefetch config file reloadable

  *) [TS-1462] SPDY proxy plugin

  *) [TS-1488] Check the event`s cancel flag before put it into the
   PriorityEventQueue. Author: Chen Bin (kuotai).

  *) [TS-1484] Fix SNI crashes where there is no default certificate

  *) [TS-1473] Fix header_filter plugin for ARM.

  *) [TS-1457] Change chunking output to avoid massive memory use by
   transforms.

  *) [TS-1469] Manager uses hardcoded FD limit causing restarts forever on
   traffic_server. Reported By: Thomas Jackson

  *) [TS-1466] disable ssl compression by default

  *) [TS-1464] mark ink_assert with the noreturn attribute

  *) [TS-1458] fix LuaJIT include ordering

  *) [TS-1454] crash when ic_hostname is null in cluster mode

  *) [TS-1270] add force local cache control in clustering mode

  *) [TS-1386] thread hang in cluster type=1, which will trigger the
     throttling

  *) [TS-1351] raw disk cache disabled when system start

  *) [TS-1452] gzip build failure with Apple/clang-421.0.57

  *) [TS-1339] Move fragment offset table from First Doc to Alt header so
     that fragment offsets are stored per alternate.

  *) [TS-1416] Do not do cache lookup if cop_test_page is true to stop
     artificial increase of cache misses.

  *) [TS-1364] Rewrite reverse-proxy URL headers in all cases, not just
     a basic Redirect target.

  *) [TS-1440] Lua transaction and session hook support

  *) [TS-1266] RAM cache stats are wrong with CLFUS.

  *) [TS-1437] Make the Lua plugin compile on RedHat based distros.

  *) [TS-1436] Added Yahoo directory layout for installation.

  *) [TS-1418] Add automake file to Metalink plugin. Author: Jack Bates.
   Also reorganize the plugins/experimental Makefile.am stuff slightly.

  *) [TS-1414] gzip plugin enhancements


Changes with Apache Traffic Server 3.3.0

  *) [TS-1427] PluginVCs now use a method similar to actual socket VCs
   for firing inactivity timeout events

  *) [TS-1426] protection from NULL deref when using 
   TSHttpTxnOutgoingTransparencySet after a user agent has disconnected

  *) [TS-1425] clean up the lingering read before deallocating its buffers
   when an origin server terminates the connection during a POST request

  *) [TS-1249] Disable ESI packed nodes by default.
   Author: Shu Kit Chan <chanshukit@gmail.com>

  *) [TS-1421] Modify the default log configs to avoid logging to stdout
   or stderr. This helps with TS-306 (but is not a solution for lack of
   log rotation on traffic.out).

  *) [TS-1415] return 400 if the length of request hostname is zero.

  *) [TS-1379] Better error message when mgmt socket is not available.

  *) [TS-1389] Replace TSHttpTxnServerRespNoStore() with
   TSHttpTxnServerRespNoStoreSet(), and move it to ts/ts.h. Author: Phil
   Sorber.

  *) Removed the (experiemental) TSHttpTxnClientDataGet() API. See
   TS-998 for more details.

  *) [TS-1408] Plugin to implement the stale-while-revalidate and
    stale-if-error features of RFC5861
    Author: Phil Sorber <phil@omniti.com>

  *) [TS-1406] add ESI to experimental plugins build

  *) [TS-1387] Allow proxy.config.http.insert_age_in_response to be
   overridden. Author: Phil Sorber

  *) [TS-1392] Fix SNI certificate fallback path

  *) [TS-1385] generic atomic operations API

  *) [TS-1380] SSL wildcard lookup doesn't find the longest match

  *) [TS-1315] Fix URL parsing to handle non-HTTP schemes correctly.

  *) [TS-1322] CONNECT to parent proxy has URL with a trailing slash
    Author: Yakov Kopel

  *) [TS-1370] Restore original stale-wile-revalidate code for posterity
    Author: Phil Sorber

  *) [TS-1340] Improve IPv6 port example in records.comfig
    Author: Jan-Frode Myklebust

  *) [TS-1363] Cert path not working using intermdiate certificate

  *) [TS-895] Added version checks for bison and flex.

  *) [TS-1331] Wrong regex for ip in records config. Authors:
   Yakov Kopel and Uri Shachar.

  *) [TS-1348] Remove the active timeout when releasing or 
  binding server_session.

  *) [TS-1350] Detect and prefer LuaJIT

  *) [TS-538] Remove deprecated INKStats API

  *) [TS-1345] fix signed/unsigned compilation issues in Vec

  *) [TS-1343] Stat system doesn't check buffer sizes

  *) [TS-1342] Lua plugin initial hook support

  *) [TS-1314] Remove TS_ARG_MAX usage so that platforms with
  unlimited ARG_MAX can build correctly.

  *) [TS-1341] Remove remnants of TSCacheHookAdd() API.

  *) [TS-1328] TSMgmtIntCreate and TSMgmtStringCreate validation.
   Author: Yakov Kopel.

  *) [TS-1338] SSL not handling some events properly.

  *) [TS-1258] Need the ability to allow a user to alter the background fill
   config values on a per transaction basis. Author: Robert Logue.

  *) [TS-961] Add TSPortDescriptor API to support accepting connections with
   inbound transparency.

  *) [TS-1332] Silence spurious error when adding SSL certificates with
   alternate names.

  *) [TS-1087] TSHttpTxnOutgoingAddrSet forward declaration does not match
   implementation.

  *) [TS-1319] Large cache (> 16TB) not working
  Author: Van Doorn, Jan R <Jan_VanDoorn@cable.comcast.com>

  *) Fix a bug that ram cache and evcuation can not work
    well in disks larger than 2TB. Author: weijin

  *) [TS-1321] improve RT on Cluster purge missing objects
   Author: Bin Chen

  *) [TS-1312] Allow to open cache disk without O_DIRECT, for e.g. tmpfs
   "disk" cache.

  *) [TS-1289] stats codes mess up when disk fail

  *) [TS-959] remove ae_ua filter

  *) [TS-1310] Fix a endless loop in CacheVC::removeEvent.
   Author: weijin & Hua Cai

  *) [TS-1299] Fix collation in custom logging.
   Author: bettydramit

  *) [TS-1306] Fix WCCP build problems on FreeBSD.

  *) [TS-1303] Added '=6' as special case for HTTP port configuration for
     backwards compatibility.

  *) [TS-1301] Add a new API, TSHttpTxnMilestoneGet(), which can be used
   to retrieve the various internal milestone timers from a plugin.

  *) [TS-1295] Don't assume root privileges during make install.
   Author: Jan-Frode Myklebust

  *) [TS-1294] initscript mentions using /etc/sysconfig/trafficserver, but
   doesn't use it. Author: Jan-Frode Myklebust

  *) [TS-1293] initscript should provide chkconfig header.
   Author: Jan-Frode Myklebust

  *) [TS-1297] Do not link all binaries and plugins with libz and liblzma.

  *) [TS-1296] Do not link all binaries and plugins with libreadline.


Changes with Apache Traffic Server 3.2.0

  *) [TS-1286] Cleanup some code around freelists and allocators.


Changes with Apache Traffic Server 3.1.4

  *) [TS-1281] make check fail on RHEL 5.x.

  *) [TS-1282] Verbosity settings for Via headers is broken.

  *) [TS-1279] Fix build system for gcc < 4.3.

  *) [TS-1277] Fixed issue with IPv6 URLs and remap configuration.

  *) [TS-1195] Support the use of raw IPv6 address in URLs and Host fields.

  *) [TS-1275] Fix startup problem where /var is on a volatile disk.
   Author: Eric Connell.

  *) [TS-1274] Transformation plugins can send content-length with 
   non-identity transfer encoding. Author: Otto van der Schaff.

  *) [TS-1272] workaround for - FATAL: HttpSM.cc:890: failed assert `0`

  *) [TS-1240] Fix race in log buffer queuing code.

  *) [TS-1271] deprecate INKStats API

  *) [TS-1250] Cache inspector does not seem to work properly

  *) [TS-1269] Building outside source tree fails on plugins.

  *) [TS-1222] single tcp connection will limit the cluster throughput.

  *) [TS-475] Accelerated single range requests.
     Based on initial work by ericb, with help from bwyatt.

  *) [TS-1236] HTTP Accept filters do not work on Illumos.

  *) [TS-1075] Workarounds for linux auto-port issues in transparent
   deployments.

  *) [TS-672] cleanup Win32 references.

  *) [TS-1181] Make the overridable configs work with "byte" configs.

  *) [TS-1252] Fixed include issues when using mgmtapi.h.

  *) [TS-1248] update HTTP status codes and strings.

  *) [TS-1245] proxy.config.http.connect_ports may be '*'.

  *) [TS-1239] TSHttpTxnServerAddrSet implementation.

  *) [TS-1237] custom log field/filtering improvements.

  *) [TS-1090] SO_MARK and IP_TOS support for Linux.

  *) [TS-1238] RAM cache hit rate unexpectedly low with CLFUS.

  *) [TS-1242] Make it build with some more recent automake versions.

  *) [TS-1241] Memory leaks when using TSHttpSchedule().
   Author: Aidan McGurn.

  *) [TS-1163] Support for raw disks larger than 2TB on Linux.

  *) [TS-1230] added a paramter to the configure script to allow overriding
   the calculated ARG_MAX value.

  *) [TS-1208] enable check_memory() in traffic_cop for Linux.

  *) [TS-1217] cop cleanup, remove unused variables & defines.

  *) [TS-1209] Allow for background fill even when a transform plugin is
   the producer. Author: Robert Logue.

  *) [TS-1229] clean up RecordsCofing.cc, remove unused entries.

  *) [TS-1142] record ram hit in stats.

  *) [TS-1213] update will crash at HttpTransact::process_quick_http_filter.

  *) [TS-1186] Fixed Perl stats API to work with 64-bit stat values

  *) [TS-1227] header_filter "set" operator doesn't work if the header
   doesn't already exist.

  *) [TS-1210] remove 3.0.x deprecated APIs

  *) [TS-1225] Remove 32 bit doc_len instances.

  *) [TS-1226] Make header_filter support e.g. '=' characters in header
   values.

  *) [TS-1150] Some performance improvements around the heap guard.

  *) [TS-1216] Remove the initializer for some gcc`s limits.

  *) [TS-1205] double free when RecDataSet in cluster mode.

  *) [TS-1220] stats: cleanup and fix the wrong values.

  *) [TS-1212] can not limit ram cache, also fix the stats.

  *) [TS-1214] another race condition in cache init.

  *) [TS-1130] Wrong CAS operation on ink_time_t on 64 bit system.

  *) [TS-1127] Wrong returned value of incoming port address. This
   API is deprecated, so I also fixed the regression tests accordingly.
   Authors: Yakov Kopel and Leif.

  *) [TS-1211] Read backlog config value to set the listen backlog.

  *) [TS-1202] Install traffic_shell man/doc pages in a more appropriate
   location. Author: Igor Brezac.

  *) [TS-1198] ssl crash when certificates are missing.

  *) [TS-1164] a race condition in cache init.

  *) [TS-1079] Add an API function to turn debugging on for specific
   transactions/sessions. This also adds a new Debug() functionality in
   both core and APIs. Author: Uri Shachar.

  *) [TS-1194 Change conversions to build with gcc-4.6 on OmniOS/Solaris.
   Also cleanup a couple of plugins to use our "core" build environment.

  *) [TS-1192] Remove gethostbyname usage in test code

  *) [TS-1147] deprecate records.config SSL configuration

  *) [TS-1121] Make --disable-diags at least disable Debug etc.

  *) [TS-1191] Change defaults for proxy.config.dns.search_default_domains to
   not use the search domains in resolv.conf.

  *) [TS-1190] Change defaults for proxy.config.http.share_server_sessions to
   have a session pool per net-thread. This is best performance for most
   common use cases.

  *) [TS-1189] Build problem with older versions of OpenSSL.

  *) [TS-1178] cop will kill manager & server, even cop it self, in cluster.

  *) [TS-1156] Fix timestamp log fields, and stop supporting network byte
   order in various log buffers. See TS-1182 for future enhancements.

  *) [TS-1017] Update logging to be IPv6 compliant, including collation.

  *) [TS-1080] If we run out of Log Buffer slots, we assert.

  *) [TS-1176] Eliminates the need for a delayed "delete" of log buffers.
   This was a serious race condition, which was previously sold by delaying
   deletes via a ring buffer.

  *) [TS-1036] Improve some squid log compatiblity. Suggestions from mnot.

  *) [TS-1092] Remove specific SSL termination mode, we either terminate, or
   we do not.

  *) [TS-1173] Improve the comments in remap.config.

  *) [TS-981] Remove the support for libev (for now at least).

  *) [TS-1172] Remove remap/StringHash.{cc,h}, they are not used.

  *) [TS-1171] http_ui cache lookup, double free.

  *) [TS-1168] Change UrlRewrite::BuildTable to be IPv6 compliant.

  *) [TS-1167] Updates parent socks server setup to be IPv6 compliant.

  *) [TS-1166] Remove proxy/Stuffer.[cc,h] because they were unused.

  *) [TS-1162] UnixNetVConnection assertion when accepting a TLS connection

  *) [TS-1135] support wildcard certificates for ServerNameIndication (SNI)

  *) [TS-1140] Combine IP Allow and QuickFilter.

  *) [TS-1159] Add compiler hints to debug logging

  *) [TS-1143] Fixed edge case problems in IpMap.

  *) [TS-1114] Fix to lock vol for CacheVC::write_vector.

  *) [TS-857] Possibly related race in UnixNetVConnection::mainEvent
   on inactivity timeout.

  *) [TS-1149] Pretty up automake output.


Changes with Apache Traffic Server 3.1.3

  *) [TS-1145] Additional clang build fixes. Author: Darrin Jewell.

  *) [TS-1144] Fix out of tree builds. Author: Darrin Jewell.

  *) [TS-1138] Fixed off by one range error in IpMap.

  *) [TS-462] Support TLS Server Name Indication (SNI)

  *) [TS-1134] TSNetAcceptNamedProtocol should fail if NPN is not supported.

  *) [TS-1133] Make the max host-header length configure.ac configurable.

  *) [TS-1002] fix custom loggin with cquuc cquup, and introduce cquuh
   to recode the client_req_unmapped_url_host.

  *) [TS-701] Remove mgmt/cli/script_configs.sh

  *) [TS-1124] Move regex_remap, header_filter and stats_over_http from
   the plugin repo to the main repo.

  *) [TS-1111] fix crash in RangeTransform::handle_event

  *) [TS-1109] fix stack dump crashing

  *) [TS-1123] editline/readline conflicts when building on OSX.

  *) [TS-1116] Fixes for building the source with clang/lvm.

  *) [TS-1115] Fixes for building the source with Intel CC (icc).

  *) [TS-1102] Cleanup of Diagnostics code. Author: Uri Shachar and Leif.

  *) [TS-1117] Remove TS_HAS_PURIFY MACRO

  *) [TS-937] EThread::execute still processing cancelled event

  *) [TS-995] Name change for IP support (ink_inet.h).

  *) [TS-841] support TLS NextProtocol negotiation


Changes with Apache Traffic Server 3.1.2

  *) [TS-1110] logstats incorrectly bucketizes all status codes greater 
  than 599 as 5xx. Author: Manjesh Nilange

  *) [TS-1094] Fixed MIME parser so certain sequences of requests on
   keep alive conections no longer wedge it.

  *) [TS-1084] Add compile-time format string checking.

  *) [TS-1101] traffic_line -x no longer works, at least not in
   reasonable time.

  *) [TS-1098] Make RC script support Amazon EC2 Linux AMI.

  *) [TS-1035] EventProcessor::spawn_thread doesn't check that there
   is enough event threads and segfaults.

  *) [TS-1096] readline support for traffic_shell.

  *) [TS-1097] online help for traffic_shell.

  *) [TS-1066] TSHttpTxnServerReqHdrBytesGet in InkAPI.cc has an extra
   parameter (int *bytes) from the prototype in <ts/ts.h>.
   Author: Alistair Stevenson

  *) [TS-1089] Added TSHttpConnectTransparent.

  *) [TS-1088] Added TSHttpTxnOutgoingTransparencySet to API to
   control outbound transparency.

  *) [TS-1083] Initial SSL next protocol negotiation support.

  *) [TS-1082] Obey existing optimizer CXXFLAGS and CFLAGS at configure time.

  *) [TS-1077] All proxy ports are now configured by
   proxy.config.http.server_ports. All other port configuration values
   are deprecated.

  *) [TS-1091] CFLAGS=-w` causes configure script to wrongly guess style of
   `gethostbyname_r` on BSD flavors. Author: Marc Abramowitz.

  *) [TS-1073] no_dns_just_forward_to_parent configuration parameter is
   ignored/not used. Author: Kevin Giles.

  *) [TS-996] HTTPHdr::m_host goes stale if HdrHeap::evacuate_from_str_heaps
   is called. Author: B. Wyatt.

  *) [TS-1041] Populate sockaddr length. Author: James Peach.

  *) [TS-1081] Eliminate an additional copy of the pristine URL string.

  *) [TS-1038] TSHttpTxnErrorBodySet() can leak memory.
   Author: Brian Geffon

  *) [TS-1049] TS hangs (dead lock) on HTTPS POST requests.
   Author: Wilson Ho

  *) [TS-1056] Lost UA connections can show up as "400 ERR_INVALID_REQ"
   in logs.

  *) [TS-1048] Add TS API to enable plugins to use traffic server
   configuration infrastructure. Author: Bianca Cooper.

  *) [TS-1074] PluginVC should schedule to the local queue instead of the
  external queue. Author: Brian Geffon

  *) [TS-1032] Assertion when upstream connection is established (with event
   handled by thread A) and immediately disconnected (handled by thread B).
   Author: Uri Shachar.

  *) [TS-1052] trafficserver restart does not work (needs to let the old
   process die). Author: Billy Viera

  *) [TS-1044] Fix TSVConn{Read,Write}VIOGet in UnixNetVConnection.
    Author: James Peach.

  *) [TS-1040] Teach TSHostLookup to use const. Author: James Peach.

  *) [TS-1071] Debug statement in FetchSM broken. Author: Brian Geffon.

  *) [TS-1057] Expose Base64-encoding through APIs.
   Author: Yakov Kopel and leif

  *) [TS-1014] slow log can not print logs well on 32-bit system,
  changed the %d to RPI64. Author: weijin.

  *) [TS-992] Various portability fixes. Author: Piotr Sikora

  *) [TS-999] Deprecate TSUrlDestroy(), it's a no-op. Just make sure
   to release the marshal buffers as normal.

  *) [TS-245] Add TSStringPercentEncode(), TSUrlPercentEncode(), and
   TSStringPercentDecode().

  *) [TS-1065] traffic_cop segment fault when enable TRACE_LOG_COP.
   Author: Conan Wang.

  *) [TS-1029] DNS crash if we free the memory into system. Author: weijin

  *) [TS-1055] Wrong implementation of TSHttpSsnArgGet().
   Author: Yakov Kopel

  *) [TS-992] Portability fixes. Author: Piotr Sikora.

  *) [TS-949] Fix key->vol hash to be consistent when a disk is marked bad.

  *) [TS-1047] fix lots of spelling mistakes Author: Arno Töll

  *) [TS-1042] correct debug message in FetchSM. Author: James Peach

  *) [TS-1039] use pcre-config to find libpcre. Author: James Peach

  *) [TS-1037] Fix for computing local machine address (was ignoring
   general addresses).

  *) [TS-1030] Improve hashing mechanism on WKS.

  *) [TS-1028] Avoid triggering assert when running debug build and enabling
   per-thread connection pols

  *) [TS-1021] Remove extra newline from binary logs.

  *) [TS-1022] Use size specific types for serialized data in binary logs.


Changes with Apache Traffic Server 3.1.1

  *) [TS-1020] Make logging to a named pipe work on Solaris.

  *) [TS-1016] Make the update frequency for stats configurable.

  *) [TS-944] Align all configurations of paths to use the same function

  *) [TS-1018] Remove obsolete OpenSSL acceleration code and configs

  *) [TS-1013] Allow ssl_multicert.config to support CA chains per host

  *) [TS-971] make cache evacuate work as expect.

  *) [TS-982] Fixed PluginVC set active/passive address. Clarified that
   it expects host order input.

  *) [TS-1012] Eliminate proxy.config.http.append_xforwards_header, which
   is never used.

  *) [TS-1004] Transformation plugins cause connection close when content
   length is not known ahead. Author: Otto van der Schaaf.

  *) [TS-1011] Fixes for OpenSSL, specifically triggered for Solaris, but
   generally broken assumptions in the old code.

  *) [TS-989] Logging is now IPv6 compatible.

  NOTE: IP addresses are now encoded as a specific type of binary
  data, not a mix of unsigned ints and strings. This is a log binary
  format change and therefore WILL BREAK ACCESS TO LOG DATA FROM
  PREVIOUS VERSIONS.

  *) [TS-1009] Disable starting ICP continuations if ICP is not enabled.

  *) [TS-1005] Use traffic_line for reload option with RC script.
   Author: Jan-Frode Myklebust.

  *) [TS-984] Log roll crash fixed.

  *) [TS-997] ATS crashes on remap plugin initialization failure.
   Author: Manjesh Nilange.

  *) [TS-988] Updated ICP for IPv6.

  *) [TS-994] Removed the extra splace from X-Forwarded-For.

  *) [TS-934] Added some wrapping around NetVConnection for server
   handling so that connection objects can be safely locked across
   threads.

  *) [TS-991] Fixed race / stall condition for WCCP during restart.

  *) [TS-985] ts/ts.h uses C++ comments, which are technically not C.

  *) [TS-928] Compile problem in TsErrataUtil on FreeBSD 8.

  *) [TS-973] Eliminate proxy.config.http.verbose_via_str.

  *) [TS-747] Add a new option, proxy.config.ssl.compression, to turn
   SSL compression on / off. This currently only works with OpenSSL
   v1.0.0 and later.

  *) [TS-963] Change the way ip_allow is parsed to be consistent with
   earlier versions (first match). Added default IPv6 allow. Added
   regression tests for the underlying IpMap class.

  *) [TS-948] Don't reload or load a broken remap.config.

  *) [TS-824] Range requests that result in cache refresh give 200 status
   response with full contents. Review and suggestions for improvements
   by Charlie Gero.

  *) [TS-964] Add 64-bit integer plugin APIs for HTTP headers.

  *) [TS-932] Fix m_pending_event == NULL crash in LogCollationClientSM.cc
   Author: weijin

  *) [TS-830] Better error when there are CLI permission problems, or
   other problems preventing operation. Author: AdunGaos.

  *) [TS-979] Found a few places where we can segfault with strlcpy.

  *) [TS-938] Fix VIA to avoid loopback address. For Solaris only IPv4
   is supported.

  *) [TS-945] Convert transparent forward requests to server style when
     forwarding to a parent proxy. Contributed by Yossi Gottlieb.

  *) [TS-926] IPv6 conversion of iocore.

  *) [TS-967] This is a simplified version of Arno Toell's patch which does
   the same: Check if any -O options where given, and if so, use those, if
   not, use our default -O3.

  *) [TS-957] remove IE6 from the white list of ae_ua filter

  *) [TS-955] Fix the logging regression testing.

  *) [TS-962] typo of key name in logstats.cc. Author: Nick Berry.

  *) [TS-958] Fix a few valgrind memory check errors.

  *) [TS-567] A number of memory allocation clean up, and improvements. We
   now also support building with tcmalloc, jemalloc, and you can also turn
   off the freelist feature (for better debugging).

  *) [TS-950] Make the HTTP header regressions work on 32-bit, inefficient,
   but it works.

  *) [TS-956] fix the building with zlib-1.2.5.1.

  *) [TS-953] consolidate string copy/concat for examples.

  *) [TS-924] More efficient sharing of origin connections.

   This also overloads the config for shared connections as follows:

       #  0 - Never
       #  1 - Share, with a single global connection pool
       #  2 - Share, with a connection pool per worker thread
       CONFIG proxy.config.http.share_server_sessions INT 1

   This option is now per-request (remap or plugin) overridable. This is
   heavily based on William Bardwells and Weijin's work.

  *) [TS-84] Unify all code to use PATH_NAME_MAX, and increase it to 4K.

  *) [TS-943] Implement support for HTTP accept filters.

  *) [TS-168] revert iObject and other changes, make collation client work
   in the clean way.

  *) [TS-941] invalid cast of off_t math to int. Author: B Wyatt.

  *) [TS-940] Add new configuration option, and solaris support, to set
  an initial congestion window size, proxy.config.http.server_tcp_init_cwnd.

  *) [TS-931] cluster latency too high, about 24ms. this change will cut
   the latency from 20+ms to about 10ms. Author: weijin

  *) [TS-896] When logging config changes, we should check if it is remote
   logging and clean up the collation client related data.

  *) [TS-936] Fix problems with core file generation on Linux.

  *) [TS-930] Fixed TSNetConnect to use network order for port.

  *) [TS-1008] Add API to get TCP connection from SSN.


Changes with Apache Traffic Server 3.1.0

  *) Make sure --enable-purify works again

  *) [TS-888] Fix SSL by enabling the right direction on successful setup.

  *) [TS-925] Switch from integer thread IDs to hex thread IDs with the
   diagnostics output. Author: Brian Geffon.

  *) [TS-919] All of iocore is now IPv6 compatible. Much of this work
   was contributed by Yossi Gottlieb.

  *) [TS-867] moving to a different thread only if the pluginvc is invoked
   from a non regular thread.

  *) [TS-876] forward map based on request receive port. Author: Manjesh
   Nilange.

  *) [TS-880] Major performance problem with second request on same
   keep-alive connection. This is a partial fix, another 2x improvement
   can be made, but too risky right now. Authors: William Bardwell and
   weijin.

  *) [TS-900] TSHttpTxnNewCacheLookupDo (experimental) breaks requests
   to origin server. Author: William Bardwell.

  *) [TS-918] Allow interval-based rotation for round robin entries.
   Author: M. Nunberg.

  *) [TS-916] TSHttpIsInternalRequest() crashes if client connection is
   terminated prematurely. Author: Manjesh Nilange.

  *) [TS-466] Multiline headers handled improperly.

  *) [TS-914] fix iocore_net_main_poll debug info in UnixNet.cc
   Author: taorui

  *) [TS-911] Remove unecessary lock in HTTP accept.

  *) [TS-908] HostDB now stores IPv6 addresses.

  *) [TS-813] fix http_ui /stat/ to response with content type

  *) [TS-849] fix some variables for traffic_line -s setting

  *) [TS-874] make asf-dist work with git repo

  *) [TS-906] ATS doesn't use proxy.config.http.forward.proxy_auth_to_parent.

  *) [TS-592] DNS internals are now IPv6 compatible. Externally this means
     DNS servers with IPv6 addresses can be used although only IPv4 responses
     are useful until other IPv6 upgrades are done.

  *) [TS-907] The source address for DNS requests can be set.

  *) [TS-903] Internal resolver library now IPv6 compatible.
     IP address matching libraries removed, replaced with IpMap which is
     faster and IPv6 compatible. SOCKS and IpAllow configurations files
     will now parse IPv6 ranges, although they do not current have effect.

  *) [TS-901] Valgrind found minor leaks and uninitialized variables.
   Author: William Bardwell.

  *) [TS-863] Make proxy.config.http.keep_alive_no_activity_timeout_out
   configurable per transaction. Author: William Bardwell.

  *) [TS-859] Make parent proxy not not work anymore.

  *) [TS-889] Disable warnings on deprecated APIs for Darwin (OSX). This
   fixes build problesm on OSX 10.7 (Lion) when using the system OpenSSL.

  *) [TS-890] update remap.config comments on regexes to be
   accurate. Author: Manjesh Nilange.

  *) TS-885 service trafficserver condrestart does the opposite of what´s
    intended. Author: Jan-Frode Myklebust

  *) [TS-898] "fixed" problems reported by Coverity
    1. Changed sprintf to snprintf
    2. ignore error on sscanf that is safe

  *) [TS-807] no config item "proxy.config.hostdb.disable_reverse_lookup" in
   hostdb. Author: weijin.

  *) [TS-883] Fix help / usage text to be, ehm, correct.

  *) [TS-567] Cleanup, removing unecessary, and unsupported, debug features.

  *) [TS-848] fix crash in net pages and remove useless option.

  *) IpLookup was removed from the experimental API.

  *) proxy.config.http.cache.cache_responses_to_cookies can now be overridden
   on a per request basis in cache.config.

  *) [TS-816] Other ports now obey specified options for both normal
   and standalone usage.

  *) [TS-882] traffic_logstats dies when printing log.

  *) [TS-804] libcap required when running standalone.

  *) [TS-730] Allow for the SSL Cipher Suite to be configured.

  *) [TS-881] Better error message from TrafficCop when admin user lookup
   fails.

  *) [TS-875] TSFetchRestpGet(), TSFetchPageResptGet() and TSFetchUrl() have
   incorrect asserts. Author: Manjesh Nilange.

  *) [TS-853] Fix a few example plugins to use the new (appropriate) sockaddr
   based APIs (and not the deprecated APIs).

  *) [TS-870] Fix evacuate relevant codes in cache to work, Author: mohan_zl

  *) [TS-869] The stat code for ram_cache miss is lost, Author: mohan_zl

  *) [TS-873] Wrong code in iocore/net/UnixNet.cc, Author: mohan_zl

  *) [TS-833] Continuation::handleEvent deadbeef fix, authors jplevyak and
  taorui.

  *) [TS-834] InactivityCopy::check_inactivity crash.

  *) [TS-864] Need more information from CacheHttpInfo (req time, resp time,
  size). Author: William Bardwell.

  *) [TS-860] Built in error for host not found looks like Internet Explorer
  error. Author: William Bardwell.

  *) [TS-861] Need a way to disable Vary: Accept-Encoding checking so a plugin
  can take care of that. Author: William Bardwell.

  *) [TS-862] Need to be able to make keep alive connections not shared on a
  per-transaction basis. Author: William Bardwell.

  *) [TS-865] Need to get address for a VConn from a plugin similar to how you
   can get it for the various things in a transaction. Author: William
   Bardwell.

  *) [TS-868] build fails with --as-needed. Author: Ilya Barygin.

  *) [TS-851] run TS without a real interface

  *) [TS-822] make cluster thread number configable

  *) [TS-845] make proxy.config.cluster.ethernet_interface default to
   loopback interface: lo on linux and lo0 on bsd derivatives

  *) [TS-847] Bad timeout when using CONNECT method.

  *) [TS-826] TSHttpTxnErrorBodySet() can leak memory. Author: William
  Bardwell.

  *) [TS-840] Regression checks fail (again) due to faulty assert use.
   Author: Arno Toell.

  *) [TS-842] remove uninstall target from build system

  *) [TS-648] Use hwloc library when available. This can be disabled
   with --disable-hwloc.

  *) [TS-398] Autoscaling threads vs Hyper Threading. This requires
   support for hwloc as well.

  *) [TS-760] Cleanup mgmt types.

  *) [TS-359] Remove DIR_SEP and use slash directly.

  *) [TS-839] Build problems when specifying lmza location.

  *) [TS-828] Various memory leaks and uninitialized values. Author:
   William Bardwell.

  *) [TS-815] make sure that a missing yacc/bison|flex/lex is *fatal* when
   building with wccp. Author: Arno Toll.


Changes with Apache Traffic Server 3.0.0

  *) [TS-827] TSMimeHdrFieldValueStringInsert() can use freed memory to
  edit headers. Author: William Bardwell.

  *) [TS-825] negative caching caches responses that should never be
   cached: Author: William Bardwell.

  *) [TS-820] Restore log buffer size to previous defaults.

  *) [TS-818] Assertion/abort when starting TS with SOCKS proxy enabled.
   Author: Yakov Markovitch

  *) [TS-810] Typo in switch statement + slight improvement.

  *) [TS-809] ts.h broken when compiling C plugins.

  *) [TS-798] We add broken remap rules when we encounter parse errors of
   remap.config.


Changes with Apache Traffic Server 2.1.9

  *) [TS-805] HostDB wastes a lot of storage for round-robin entries,
   and the calculations of size are off.

  *) [TS-806] TS_ADDTO removes duplicates, so avoid this by using the
   -R option to libtool

  *) [TS-793] Improve print statements for ink_freelist debugging.

  *) [TS-679] The external API was changed to make it IPv6 compliant
     (although it doesn't actually work with IPv6). Old API functions
     were deprecated but not removed.

  *) [TS-797] Wrong delete used in stats processor.

  *) [TS-769] Fixed infinite loop when getting a 505 response from the
   origin and the connection is keep-alive.  Now downgrading keep-alive
   all the time along with the protocol.

  *) [TS-788] Cleaned up the request and response cacheable apis.

  *) [TS-792] Add a config option (disabled by default) to support
  mlock() and mlockall().

  *) [TS-783] Port ATS to IA64. Author: Arno Toell.

  *) [TS-778] Compile Fails on Solaris 10 (gcc). Author: Igor Brezac.

  *) [TS-404] Add a new API, TSOSIpSet() which allows you to bypass the
    origin server DNS lookup.

  *) [TS-791] Remove ShmemClean.cc, it's no longer needed.

  *) [TS-786] Add a perl module to edit a records.config configuration
  file.

  *) [TS-779] Set thread name for various event types.

  *) [TS-784] Don not use class allocator for remap processing when no
   remap threads are enabled.

  *) [TS-782] Remap processor creates a remap thread even when asked not
   to.

  *) [TS-781] Cleanup of unusual configs, and better defaults making
   records.config leaner, and a little more useful.

  *) [TS-780] Retune the number of SSL threads.

  *) [TS-775] Disable cluster autodiscovery via multicast when
   clustering is disabled. This should hopefully fix run-time errors
   with Ubuntu 11.x.

  *) [TS-776] memchr in glibc has evolved, and is faster than our
   version, replaced.

  *) [TS-774] Add a new configure option, --enable-static-libts, which
   avoids the dynamic linking hassles involved with the dynamic nature
   of libts. This is for devs only.

  *) [TS-773] Traffic server has a hard limit of 512 gigabytes per RAW
   disk partition. This fix required changing the disk structure which
   will result in a total disk cache clear (wipe) after upgrading.

  *) [TS-772] Make proxy.config.http.doc_in_cache_skip_dns overridable.

  *) [TS-770] proxy.config.http.doc_in_cache_skip_dns is not being read
   from records.config. Author: Yakov Markovitch

  *) [TS-738] 'make check` fails on x86.

  *) [TS-771] Remove remaining v1 log buffer code.

  *) [TS-562] Make --with-openssl path be honored with an -rpath to
   libtool. This also fixes the same problem with other libraries,
   e.g. pcre, zlib etc.

  *) [TS-765] Make the backdoor port (8084 by default) only listen on
   127.0.0.1 .

  *) [TS-762] Range values like -10 are processed. Author: William
   Bardwell.

  *) [TS-761] Fixed bug where 3 (or more) remap plugins in a chain
   couldn't be loaded.

  *) [TS-763] When creating multiple SSL accept threads, we use the
   wrong instantiator.

  *) [TS-757] Change TSNetAccept() API to take an option for enabling
    (and number of) accept threads.

  *) [TS-759] Makefile in proxy/config handles $DESTDIR incorrectly.
   Author: Arno Toell


Changes with Apache Traffic Server 2.1.8

  *) [TS-750] TS does not fail-over if one origin server for a 2 address
   hostname. Author: William Bardwell.

  *) [TS-752] If you cancel a scan really quickly you can get a NULL
  dereference. Also other important performance and correctness fixes
  for the cache scanning code. Author: William Bardwell and jplevyak.

  *) [TS-749] Connection hangs if origin server goes down in the middle of
  a response. Author: William Bardwell.

  *) [TS-753] TS-753 Some more cleanup in InkAPI, move a few experimental
   APIs to ts.h

  *) [TS-751] Experimental TSHttpTxnCacheLookupStatusSet(HIT_STALE) calls
   cause a crash. Author: William Bardwell

  *) [TS-748] Client side transparency doesn't work on trunk.

  *) [TS-702] FATAL: MIME.cc:1250: failed assert `j < block_count`.
  Author: Yakov Markovitch

  *) [TS-746] Allow to remove URL fields with "NULL" (or 0) values.

  *) [TS-744] Configurations to control SSL session reuse and cache
  size. Authors: qianshi and Leif

  *) [TS-716] Bug where NetVC could be double free'd.
   Fix for DNS crash: bad memory management of HostEnt structures. It is
   not clear that this fixes the bug entirely.  Some of the stack traces
   are consistent with this bug, but some are not.

  *) [TS-743] Support separate configs for keep-alive enabled for _in
   and _out connections.

  *) [TS-741] traffic_manager handles sockets incorrectly.

  *) [TS-742] assert triggered wrongly (in debug builds).

  *) [TS-740] Traffic Server fails to build on kfreebsd.
   Author: Arno Toell.

  *) [TS-737] Small hackish fix for rc/trafficserver.in so rc/trafficserver
   will work with FreeBSD. Author: G Todd.

  *) [TS-735] Disable ccache by default, use with --enable-ccache.

  *) [TS-734] Remove unused fields in net stats pages.

  *) [TS-212] Startup service support for Solaris. Author: Igor Brezac.

  *) [TS-629] fix some non-portable char == unsigned char assumptions.

  *) [TS-621] Update records.config.default.in with changed / removed
   configs.

  *) [TS-641] Remove a bunch of Web UI related configs and code.

  *) [TS-719] libtsutil.so is not self-contained.
  Author: Igor Brezac.

  *) [TS-729] Fix bugs with Via Headers handling. (Note: This is
   unlikely to have caused the crash the bug report)
   Author Leif Hedstrom

  *) [TS-721] Incorrect http hit ratio in stats.
   This also removes a number of obsoleted stats and also disables
   stats aggregation in WebOverview.cc, one more nail to WebUI's
   grave. Author: Leif Hedstrom

  *) [TS-728] Remove the --enable-webui option, since it doesn't
   produce a running webui anyway. Also remove html2

  *) [TS-685] Rename partition.config because it doesn't have
   anything todo with disks. Also rename all code related to it
   so as not to confuse anybody.

  *) [TS-714] Fix traffic_shell hanging on every command

  *) [TS-562] Fix TCL linking to honor custom library dirs.
   Author: Eric Connell.

  *) [TS-624] make install should not overwrite etc/trafficserver/.
   Author: Eric Connell.

  *) [TS-465] Allow for existing Server: string to not be overwritten.
   This adds a new semantic for the value "2" to this option.

  *) [TS-633] Fix reverse mapping with different schemes.
   Author: Andreas Hartke.

  *) [TS-715] Fixes and cleanup for Perl client. Author: Billy Vierra.

  *) TS-550 Remove an unused / unsupported debug tool. Also update the
   remap code to use our standard linked list (Queue in this case).

  *) [TS-704] Link traffic_server dynamically to make distros happy,
  since --disable-static will work.

  *) [TS-545] Clean out more cruft from MIXT legacy.

  *) [TS-713] Honor the offset within do_io_pread.

  *) [TS-712] Fix compile problems with clang / llvm

  *) [TS-545] parent.config (and perhaps other configs) have an unused
   concept of "tags" for MIXT media. Cleanup remaining MIXT junk.


Changes with Apache Traffic Server 2.1.7

  *) [TS-711] Don't schedule remap.config reloads on a network threads.
   We now schedule this task on an ET_TASK thread, which avoids blocking
   a net-thread for several seconds (when reloading very large remaps).

  *) [TS-710] Do not dlopen / reload a remap plugin .so more than once.

  *) [TS-588] Change Remap plugin APIs to use URL TSMLoc, and normal
   ts/ts.h APIs for getting and setting components.

  *) [TS-708] TsConfig doesn't handle backslashes correctly.

  *) [TS-209] add support for raw disk on Solaris: credits: Igor Brezac
    for both the code and testing!

  *) [TS-705] Fixes for compiling with gcc v4.6.

  *) [TS-706] hardware sector size's over 8K current report an Error
   but are passed through resulting in lots of disk waste.

  *) [TS-707] The random number generator from 1-23-2011 is using the
   same seed for all threads = collisions in the cache

  *) [TS-700] Need additional controls in cache.config.

  *) [TS-696] make check fails on libtsutil due to missing libresolv
   and librt. Author: Eric Connell.

  *) [TS-691] LogFilter not working for "int" types.
   Author: Eric Connell.

  *) [TS-692] Add an experimental API to modify the outgoing IP address.

  *) TS-676: logic in Store::clear and Store::read_config is wrong.
  Author: mohan_zl.

  *) [TS-680] Change many typedef void* types to anonymous structs.

  *) [TS-690] Schedule some callbacks on the ET_TASK threads

  *) TS-689 Restore TSMgmtUpdateRegister() to the SDK APIs.

  *) [TS-550] Remove MgmtPlugin.{cc,h}.

  *) [TS-657] Proper validation of RWW settings on startup.

  *) [TS-688] Remove the "tag" modifier from parent.config.

  *) [TS-682] Segfault when partition.config is used.

  *) [TS-687] Build failures on FreeBSD8

  *) [TS-684] config.layout for gentoo linux, may also be used on Fedora

  *) [TS-675] Make redirect and reverse maps work again.


Changes with Apache Traffic Server 2.1.6

  *) [TS-678] Add a config option for try-lock retry delay.

   This adds a configuration option

         proxy.config.cache.mutex_retry_delay INT 2

   2ms seems to be fairly optimal, with little detrimental effect on CPU
   usage. We'll fine tune this further in the next release.

  *) [TS-674] Fixes for cache.config and the "modifiers" to work.

  *) [TS-641] Remove inktomi*.css and some files only referenced by it.
   Removing mgmt/html2/charting. Remove the now empty mgmt/html2/tune.

  *) [TS-590] Cleanup all SDK APIs to be more consistent. This changes a
   large number of APIs, so please check updated docs and signatures in
   ts/ts.h. A new tools, tools/apichecker.pl, can be used to help
   identifying areas in existing plugins that might need changes.

  *) [TS-673] Make the default configurations more conservative
   for when content is cacheable.

  *) [TS-672] Remove unused/unreferenced Win32 header files and
   code paths

  *) [TS-671] Detect install group based on install user.

  *) [TS-644] Fix clustered cache pages crash.

  *) [TS-651] Clear all stats when we ask to clear the local stats.

  *) [TS-489] Remove the "connection collapsing" feature, it was poorly
   implemented, and caused major problem if enabled. We should redo this
   for v3.1 in a way that fits with the HttpSM [author: mohan_zl].

  *) [TS-668] Add support for URL stats to traffic_logstats.

  *) [TS-665] Remove HTTP_ASSERT from the code base, use standard asserts.

  *) [TS-663, TS-664] Fixes to WCCP with mask assignments, and trunk build
   problems.

  *) [TS-662] Make per partition stats for bytes_used work.

  *) [TS-661] Delay the copy of per transaction configs until a plugin
   actually tries to modify a setting. We also add these settings to the
   list of configurations that is overridable:

       proxy.config.http.cache.max_open_read_retries
       proxy.config.http.cache.open_read_retry_time

  *) [TS-660] Cache scan can not be canceled.

  *) [TS-505, TS-506] Changed the defaults to deal with read contention on
   the cache, this dramatically improves the performance on cache misses.

  *) [TS-655] Reorganize some code to reduce binary foot prints.

  *) [TS-653] Bogus logcat conversion of squid timestamps.

  *) [TS-643] Unable to purge objects on other servers in full cluster mode.

  *) New 64-bit random generator.

  *) [TS-639] Rename the management APIs from INK* to TS*.

  *) [TS-650] Remove the dead v2 stats code.

  *) [TS-649] Dynamic libraries for mgmt APIs.

    This makes libts -> libtsutil, and we now support making .so's for
    libtsutil.so and libtsmgmt.so. All binaries are changed to use this,
    except traffic_server which continues to use the libtsutil.a library
    (for performance on e.g. 32-bit platforms).

    This also renames the public API include file to be

         #include <ts/mgmtapi.h>

  *) [TS-647] Move Layout out of iocore and into lib/ts.

  *) [TS-638] Rename various directories:
      proxy/mgmt -> mgmt/
      proxy/mgmt/cop -> cop/

   All "cli" APIs are now also migrated into mgmt/cli, unified into one
   single cli.

  *) [TS-641] Cleanup of Web2/HTML2.

  *) [TS-636, TS-637] Remove various unused source files.

  *) [TS-631] Rename proxy/http2 -> proxy/http and proxy/mgmt2 to proxy/mgmt.

  *) [TS-582] Add an example to records.config for how to bind a specific IP.

  *) [TS-491] Cluster port was activated even with clustering disabled. This fix also
   adds monitoring support for the "cli" unix domain socket.

  *) [TS-593] Cleanup of inktomi.com.

  *) [TS-324] Cleaning up some old TCL files and dependencies.

  *) Remove traces of FTP references [TS-324] by purging the now useless TCL
  bindings to it.

  *) [TS-513] Fix configure issues for sqlite3. This fix eliminates all of
  SimpleDBM, sqlite3 and bdb dependencies. It also fixes the "make
  distclean" problem, and clean things up a bit.

  *) [TS-491] Add the CLI interface to Traffic Cop, and make it possible to
   run traffic_manager without listening on the cluster port.

  *) [TS-583] Build fails if --disable-webui is added.

  *) [TS-618] Removing traces of CCAS/CCASFLAGS.

  *) [TS-627] Fixes for "make check" to succeed (author: Arno Toell).

  *) [TS-632] Fixes for bad cast and cleanup for Intel CC.


Changes with Apache Traffic Server 2.1.5

  *) More 64-bit issues has been identified in the SDK and HTTP core, and
  fixed [TS-620].

  *) Code cleanup of old transparency code and options [TS-613].

  *) We now require a compiler (or libc) that provides atomic
  operations. This includes gcc 4.1.2 or later, Intel CC, clang (recent
  versions) as well as Sun's Solaris compilers and libc [TS-618].

  *) Support normal default path for remap plugins [TS-616].

  *) Change default settings for MSIE User-Agent sniffing [TS-615].

  *) Remove remnants from InktoSwitch. This removes the following
  configurations [TS-614]:

      proxy.config.http.inktoswitch_enabled
      proxy.config.http.router_ip
      proxy.config.http.router_port

  *) Modify TSContSchedule to take a thread type, and add
  TSContScheduleEvery [TS-589].

  *) Added support to allow some select (~50 or so) records.config
  configurations to be overridable per transaction. This is done via new SDK
  APIs, as well as a remap plugin provided with the core [TS-599]. The new
  APIs available are

      TSHttpTxnConfigIntSet()
      TSHttpTxnConfigIntGet()
      TSHttpTxnConfigFloatSet()
      TSHttpTxnConfigFloatGet()
      TSHttpTxnConfigStringSet()
      TSHttpTxnConfigStringGet()
      TSHttpTxnConfigFind()

  *) Eliminate dedicated default DNS for SplitDNS [TS-597]. Author: Zhao
   Yongming.

  *) Eliminate proxy.config.net.max_poll_delay configs [TS-605].

  *) Old traffic_net configurations are eliminated [TS-601].

  *) Multiple preads: this patch is only active if you call do_io_pread on
  the cache.  This includes a regression test for do_io_pread which is at
  least a smoke test of the new code. [TS-61]

  *) Migrate from home-grown regular expression classes to pcre [TS-604]

  *) Reduce number of calls to regex matcher for standard requests with
   well-known-strings (WKS). [TS-603]

  *) Parse Range: requests a bit better. Prior, a request like like Range:
   bytes=100-200 would return 0-200. Additionally, Range: bytes=100- would
   not parse properly. [TS-596]

  *) Remove old, unused configuration code (duplicated) [TS-576].

  *) Bump the SDK version numbers properly [TS-595].

  *) Migrate from our own int64 (et.al) to int64_t / stdint types. This also
   changes the SDK, so ts/ts.h users should now use int64_t etc. [TS-594].

  *)./configure will now tell us more about its defaults.

  *) Add better tests for eventfd, making sure sys/eventfd.h exists
   [TS-515].

  *) Stub / base implementation for the Task thread pool [TS-589].

  *) Cleanup of traffic_logstats, and also add support for JSON
   output. Several new options and query args added to select output format
   and data [TS-587].

  *) Add back support for using the default DNSHandler from DNS.cc This
   helps with SplitDNS [TS-580].

  *) Fixes for DNS to properly schedule and initialize [TS-570].

  *) Fix make check so it actually compiles [TS-586].

  *) Remove RAF pieces [TS-584].

  *) Replace the SDKAllocator with a ClassAllocator [TS-577].

     This reduces the amount of memory allocation for plugins, but requires
     that plugins now religiously release the handles that they are expected
     to release (i.e. no automatic gc is done for lazy developers).

  *) Fixes for getting the altinfo regression check to succeeds [TS-171].

  *) Fixes for some transform, and other, mismatches of int vs int64 in the
   new APIs and underlying cache [TS-456].

  *) Eliminate misguided string copies in the SDK [TS-579].

  *) Fix build of ts.h and tsxs when the .in files changes [TS-574].

  *) Move libinktomi++ and librecords to lib/ts and lib/records [TS-571].

  *) Add SDK API calls to directly get the elements of the running TS
   version [TS-568].

  *) Added WCCP support.

  *) Bring IPv6 functionality back to trunk, for incoming (client)
   connections [TS-18]. Original author: Tsunayoshi Egawa.

  *) Segfault with HTTPS, fixed by correctly initializing SSLNetVConnection
   being added to freelist [TS-559].

  *) The old logs.config custom log format is no longer supported. Only the
   XML custom logs are now supported. This eliminates the config

       proxy.config.log.xml_logs_config

   as well, since it's the only option for custom logs [TS-556].

  *) All log configurations (and stats) are renamed from log2.* to
   log.*. This is to avoid confusion, since Apache Traffic Server never had
   the old (obsolete) log system. There's now only one log system, log
   [TS-555].

  *) Many fixes and improvements on the Stats pages subsystem. This now
   properly supports (if configured) various internal URLs, like
   http://{net}, http://{hostdb} etc. [TS-554].

  *) The NewCacheVC is removed [TS-551].

  *) Support for the Alpha processor is eliminated [TS-552].

  *) A number of unecessary memory allocations are removed, improving
   performance under heavy load. [TS-550, TS-549]

  *) All streaming media (MIXT) configurations are now properly removed from
   code and default configs [TS-544].

  *) URL scheme was case sensitive in the cache key [TS-474].

  *) Fixes for broken API signatures, additions / modifications to the
   following API:

     TSReturnCode TSHttpTxnArgSet(TSHttpTxn txnp, int arg_idx, void *arg);
     TSReturnCode TSHttpTxnArgGet(TSHttpTxn txnp, int arg_idx, void **argp);
     TSReturnCode TSHttpSsnArgSet(TSHttpSsn ssnp, int arg_idx, void *arg);
     TSReturnCode TSHttpSsnArgGet(TSHttpSsn ssnp, int arg_idx, void **argp);

     TSReturnCode TSHttpArgIndexReserve(const char* name, const char*
     description, int* arg_idx); TSReturnCode TSHttpArgIndexNameLookup(const
     char* name, int* arg_idx, const char** description); TSReturnCode
     TSHttpArgIndexLookup(int arg_idx, const char** name, const char**
     description);

     TSReturnCode TSHttpSsnTransactionCount(TSHttpSsn ssnp, int* count);

   This was all combine into [TS-504], but also see [TS-503].

  *) Many fixes for broken regression tests!

  *) RNI is now completely cleaned out [TS-536].

  *) Fixes for SplitDNS (co-author: mohan_zl) [TS-435].

  *) HTTPS to origin servers, with Chunked responses, would hang [TS-540].

  *) Mismatched APIs using "unsigned char*" [TS-458].

  *) Rename / modify TSSetCacheUrl() API, the new prototype is

     TSReturnCode TSCacheUrlSet(TSHttpTxn txnp, const char *url, int
     length);

   If length == -1, then the API will calculate it using strlen() [TS-520].

  *) All public APIs, structs and defines are now prefixed with "TS" instead
   of the old "INK". There are two exceptions, for the deprecated INKStats*
   and INKCoupledStats* APIs [TS-521].

  *) The hooks around "remap" has been organized, and a new hook as been
   added (for post-remap). New / renamed hooks are

     TS_HTTP_PRE_REMAP_HOOK TS_HTTP_POST_REMAP_HOOK

   In addition, a new API was added, to allow a plugin to skip the remap
   phase completely:

     TSReturnCode TSSkipRemappingSet(TSHttpTxn txnp, int flag);

   These fixes went in with [TS-529] and [TS-530].

  *) INKHttpTxnSetHttpRetStatus not honored when an API transaction is
   reenabled with INK_EVENT_HTTP_ERROR [TS-535].

  *) Various defines for version identification has been moved to the public
   ts/ts.h include file, e.g.

       #define TS_VERSION_STRING             "2.1.6-unstable"
       #define TS_VERSION_NUMBER              2001006
       #define TS_VERSION_MAJOR               2
       #define TS_VERSION_MINOR               1
       #define TS_VERSION_MICRO               6

   The intended use is for plugins to be able to verify available APIs at
   compile time (vs the existing runtime checks) [TS-534].

  *) Traffic Server should now build on ARM processors. Commit message is
   appropriately describing the situation with this CPU:

   This is a sad day of defeat.  Not my defeat, but more a collective human
   defeat.

   Question: "Chips fabricated today don't have 64bit atomic primitives?"
   Answer: "Be sad."

   The ARM box we're working on (armv5tejl) doesn't support any 64bit
   primitives.

   This means we need a method of using a global (yes, giant lock of death)
   to protect modifications of arbitrary 64bit integers in process space.
   We could make this less contentious by allocating pagesize/8 mutexs and
   then protecting an int64 based on its page offset.  Instead, I think we
   should mobilize to burn these architectures to the ground and use public
   embarrassment to fix future instruction sets. If another platform has
   this issue, we'll want to change the define to:

   TS_ARCHITECTURE_LACKS_64BIT_INSTRUCTIONS and turn on the global death
   lock based on that.

   This does not change performance on any other platform -- it's compile
   time capital punishment. [TS-533] and [TS-135].

  *) Very old APIs, that have been deprecated since long before the Apache
   Open Source project, are removed. Also, only three public include files
   are now available:

     ts/ts.h ts/experimental.h ts/remap.h

  Various other cleanup related to the APIs was also done [TS-522].


Changes with Apache Traffic Server 2.1.4

  *) Fixes to clustering, that caused an assert to trigger after the stats
   changes [TS-519].

  *) Make the checks when to honor the Content-Length: header less strict,
   against origins without Keep-Alive [TS-500].

  *) Eliminate old ssl_ports feature, it's completely replaced with the
   connect_ports configuration [TS-517].

  *) New script available to help build plugins, tsxs [TS-512].

  *) Simple, brute force (and efficient) status code stats counters
   [TS-509].

  *) Generalize RecDumpRecordsHt to use RecDumpRecords which is a
   callback/map pattern [TS-508].

  *) Fix plugin APIs to be compatible with the 64-bit changes in the
   core. This is an incompatible change with previous releases [TS-14].

  *) Fixes for stats around origin connection counters, used when allowing
   for origin connections to be reused between clients [TS-501].

  *) Experimental supoprt for a dedicated DNS thread. This can be enabled
   with the records.config option

      CONFIG proxy.config.dns.dedicated_thread INT 1

  This feature is possibly useful for very busy forward or transparent
  proxies [TS-307].

  *) Accept threads can leak some amount of memory. This patch also supports
   multiple accept threads (very experimental!) [TS-496].

  *) HttpSM has an assertion that checks the client URL against the cache
   URL, which breaks INKSetCacheUrl [TS-495].

  *) Return value from pcre_exec tested incorrectly [TS-493].

  *) Improved loop detection using the Via header [TS-490].

  *) Fixes for Solaris build (yay, it builds!).

  *) Remove filter.config remnants [TS-486].

  *) Cleanup in InkAPI [TS-485].

  *) Move PKGSYSUSER to ink_config.h.in [TS-482].

  *) Unresponsive server can stall ATS [TS-480].

  *) UrlRewrite cleanup [TS-434].

  *) Build TS with clang (author: Igor Galic) [TS-427].

  *) Better support and handling of DNS round-robin options (author: Zhao
   Yongming) [TS-313].

  *) Make it possible to "write" Content-Length headers > 2GB [TS-471].

  *) Better support for Age: headers, and avoiding overflows [TS-470].

  *) Added a configure option to size the API stats "slots". The new option
  is --with-max-api-stats=<n> [TS-454].

  *) In Cache.cc, make snprintf() around Debug statements conditional for
   performance [TS-459].

  *) Cleanup / optimize Via: string generation [TS-460]. Also make the
   default for Via: on responses to be disabled (it can leak info).


Changes with Apache Traffic Server 2.1.3

  *) Removed the remnants of NCA from the source [TS-455].

  *) New plugin APIs for stats, and making the "v2" (incomplete) stats
  experimental (no longer built by default) [TS-390]. See
  https://cwiki.apache.org/confluence/display/TS/NewStatsAPI for more
  details.

  *) Cleanup in duplicated configs, and obsoleted configs [TS-447] and
   [TS-451].

  *) Remove some remnants of SNMP [TS-401].

  *) Cleanup of MIX and LDAP/NTLM remnants [TS-443].

  *) Make the target fragment size configurable for the disk cache. This
   adds a new option, proxy.config.cache.target_fragment_size [TS-445].
   This should dramatically improve large file disk performance.

  *) Improve build include dependencies [TS-442].

  *) Cleanup / fixes for remap plugin chaining [TS-224].

  *) Support the rc/trafficserver script for FreeBSD [TS-211].

  *) traffic_shell shows wrong RAM cache size > 2GB [TS-439].

  *) Better warnings / errors when bad NIC is configured [TS-327].

  *) Add support for hardware sector sizes 512 - 8192 bytes (e.g. 4096, the
   new standard). Autodetected for raw devices on Linux (no support for
   other OSes yet), and added a new configuration

       CONFIG proxy.config.cache.force_sector_size INT 4096

   This change invalidates the entire cache as well, since it's no longer
   compatible [TS-43].

  *) Added APIs to override the cacheablity of the response [TS-395].

  *) Add OSX support to 'trafficserver' script (author: Dan Mercer)
   [TS-210].

  *) Fix for (very) large buffers fed to the cache [TS-413].

  *) Forward transparency is available on Linux kernels with TPROXY
   [TS-291].

  *) Fix defaults / max for DNS retries [TS-424].

  *) Improvements for Perl admin module (author: Adam Faris) [TS-418].

  *) Problems with specifying separate config files for SSL certificates and
   keys [TS-405].

  *) Logging: Default settings for diagnostic logging [TS-55].

  *) Fixes to Debian layout (author: Igor Galić) [TS-415].

  *) Remove DNS proxy support [TS-422].

  *) rc/trafficserver start/stop quits with bogus status on success (author:
   Igor Galić) [TS-429].

  *) Increase default max in-flight DNS queries [TS-423].

  *) Update so the pristine URL will work for reverse and forward proxy.
    Also, clearing the url on transaction close (author: Wendy Huang)
    [TS-410].

  *) TS fails to use user ID with user name > 8 characters (author: Yakov
   Markovitch) [TS-420].

  *) Duplication of RAM cache hits and miss statistics (reading 2x) (author:
   John Plevyak) [TS-453].


Changes with Apache Traffic Server 2.1.2

  *) Improvements in resilience against DNS poisoning and forging of
   response packets [TS-425] and [CVE-2010-2952].

  *) Segmentation fault in INKError when error output is made both in error
   log and as debug messages (author: Yakov Markovitch) [TS-419].

  *) Debian layout for config.layout (author: Igor Galic) [TS-415].

  *) Eliminate extraneous stats thread [TS-411].

  *) CACHE_FRAG_TYPE is now not a power of 2 [TS-76].

  *) Remove unnecessary stats update [TS-390].

  *) Get basic features to compile with Intel CC [TS-400].

  *) More 64 bit issues, this time in the PluginVC code [TS-380].

  *) Add configure option to enable detailed logging [TS-392].

  *) Make sure to honor user settings for "dirs" (author: Theo Schlossnagle)
   [TS-399].

  *) Errors on failing to bind / listen on a specified port [TS-247].

  *) Exempt quick filter for 127.0.0.1 [TS-397].

  *) Cleanup after "layout changes" (author: Zhao Yongming) [TS-389].

  *) Fix remaining (non-API) INK64 etc. [TS-365].

  *) Segfault when using show:network [TS-109].

  *) Update all examples to use non-deprecated APIs [TS-266].

  *) Do some cleanup on Connection::fast_connect and
   Connection::bind_connect (author: Alan M. Carrol) [TS-320].

  *) Remove LLONG config option [Ts-364].

  *) Cleanup some proxy/mgmt2/tools [TS-16].

  *) Cleanup a little more of webui [TS-91].

  *) TCL missing [TS-326].

  *) logstats does not work with layout changes (author: Zhao Yongming)
   [TS-385].

  *) Convert bogus IOCORE_MachineFatal and IOCORE_ProcessFatal to Warning
    and MachineFatal respectively based on review of the code and related
    uses [TS-144].

  *) INKIOBufferReaderCopy, INKIOBufferWrite should take void * instead of
   char * [TS-67].

  *) Adds APIs for aio disk read and writes using the internal aio support
    in iocore (author: Wendy Huang) [TS-387].

  *) Solaris 10 (x86) 64-bit patch (author: Igor Brezac) [TS-388].

  *) Fix for 64-bit conversion [TS-385].

  *) Creating transaction specific 'to URL' in case of regex remap match
   [TS-384].

  *) Backing out m_capacity_host changes [TS-383]

  *) Solaris 10 port work.


Changes with Apache Traffic Server 2.1.1

  *) Allow SI decimal multipliers for numeric configuration parameters
    [TS-361].

  *) Standardize configure options by allowing to specify the location for
    any third-party library, and split library detection code into separate
    .m4 files [TS-345].

  *) Reorganization of the path layout system.  Add --enable-layout=LAYOUT
    configure option that can select layout from config.layout file
    [TS-280].

  *) HTTP state machine is now 64-bit "clean", allowing for caching and
   proxying documents larger than 2GB [TS-34].

  *) Fix for truncated Content-Type on TS-generated responses [TS-290].

  *) Performance improvements on cache for larger(ish) objects.


Changes with Apache Traffic Server 2.1.0

  *) Support for many more platforms, including FreeBSD, MacOSX and Solaris.

  *) Code cleanup to get the ATS software into a distributable shape. This
   means that certain things are missing, or not functional (intentionally).

  *) Support for larger Cache Partitions up to .5 PB (Petabytes), reducing
   seeks/write.

  *) Reduced Cache miss latency (sub millesecond).

  *) RAM Cache pluggability, new algorithm (CLFUS) and optional compression.

  *) Support for TCL v8.6 and later [TS-246].

  *) The cache is now 64-bit "clean".


Changes with Apache Traffic Server 2.0.1

  *) Port of CVE-2010-2952 for 2.0.x [TS-425].

  *) Backport part of TS-322 that deals with indexing arrays with char
   (author: Marcus Ruckert) [TS-334].

  *) Backport TS-336 to 2.0.x. Problems with make install DESTDIR=...


Changes with Apache Traffic Server 2.0.0

  *) Change SDK versioning schemes to 2.0 [TS-249).

  *) Minor additions to the SDK (see the docs for details).

  *) Support regexe_map rules in remap.config [TS-80]


Changes with Apache Traffic Server 2.0.0-alpha

  *) Code cleanup to get the ATS software into a distributable shape. This
   means that certain things are missing, or not functional (intentionally).

  *) Ports available for most Linux distros, including 64-bit.
