                                                         -*- coding: utf-8 -*-
Changes with Apache Traffic Server 5.2.0

  *) [TS-3280] Segfault in new freelist bulk freeing (in debug mode).

  *) [TS-3276] Fix cache backwards compatibility issue.

  *) [TS-3274] Forward port fix for cache fixup race condition in ram cache
   from 4.2.X.

  *) [TS-2119] Fix builds for mysql remap plugin.

  *) [TS-3083] Fix core dump due to FetchSM double delete.

  *) [TS-3262] Change abs() to std::abs(), avoid compiler errors.

  *) [TS-3265] Fix spdy req_map access to use iterator instead of operator[].

  *) [TS-3261] Fix SSL BIO memory leak issue introduced in TS-3006.

  *) [TS-3257] Fix ssl handshake buffer memory leak introduced in TS-3006.

  *) [TS-3248] Fix to resolve crash introduced in TS-3189.

  *) [TS-3254] Patches to fix perl get_stats API.

  *) [TS-3226] Move access of read vio inside the mutex to prevent ntodo
   corruption.

  *) [TS-3244] stats_over_http plugin does not use optional path argument.

  *) [TS-3223] Fix the internal buffer sizing.

  *) [TS-3130] Delay setting buffer to NULL to prevent crash in logging 

  *) [TS-3207] _xstrdup incorrectly calls ink_strlcpy with 0 length strings.

  *) [TS-3205] ASAN complaints on config reload freeing malloc'ed memory with
   delete[].

  *) [TS-3074] Fix FreeBSD regression.

  *) [TS-3191] Reduce confusion with HTTP_TUNNEL_STATIC_PRODUCER.

  *) [TS-3065] Remove"Transfer-Encoding" header when the error body was set by
   ATS (e.g. plugin). Author: portl4t <portl4t.cn@gmail.com>

  *) [TS-3064] Expose TS_EVENT_VCONN_ACTIVE_TIMEOUT in headers.
   Author: Daniel Vitor Morilha <dmorilha@gmail.com>

  *) [TS-3190] Change producer_run() to run a specific producer in more cases.

  *) [TS-3188] Do not set half_close_flag on keep_alive connections.

  *) [TS-3189] Delay starting read on server to user agent tunnel.

  *) [TS-2417] Add forward secrecy support with DHE.
   Author: John Eaglesham <je@8192.net>

  *) [TS-3202] Enforce token character constraints on method field in HTTP header.

  *) [TS-2009] Fail HTTP header parsing for null characters.

  *) [TS-3196] Prevent crash due to de-allocated read VIO continuation.

  *) [TS-3199] Do not wait for body for HEAD method.

  *) [TS-3192] Implement proxy.config.config_dir.

  *) [TS-3195] Improved crash logging.

  *) [TS-3194] Remove unused proxy.config.plugin.plugin_mgmt_dir configuration.

  *) [TS-3185] Increase the default spdy initial_window_size_in setting to 1MB.

  *) [TS-3178] ProxyAllocators Improvements.

  *) [TS-2812] Initial version of header_normalize plugin.

  *) [TS-2959] Fix compiler issue for MultiCache.

  *) [TS-3155] Added value_get_index to MimeField.

  *) [TS-3184] spdy window_update not triggered correctly.

  *) [TS-3024] Build with OPENSSL_NO_SSL_INTERN
   Author: Susan Hinrichs <shinrich@network-geographics.com>

  *) [TS-1175] Replace LogBuffer's new/delete buffer alloc with
   ioBufAllocator.

  *) [TS-1432] Adding TSMutexDestroy API.

  *) [TS-3171] Minor style updates to Tokenizer interface.

  *) [TS-3156] Remove MutexLock bool operators.
   Author: Powell Molleti <powellm@yahoo-inc.com>

  *) [TS-2682] Add per remap support for background fetch plugin.

  *) [TS-2683]: Enhance the bg fetch plugin to support configuration
     control with inclusion/exclusion criteria based on client-ip
     or any header.

  *) [TS-3149] Move Via decode out of traffic_line and make a separate tool.
   Author: Meera Mosale Nataraja <mechins@gmail.com>

  *) [TS-3151] Added an extra check for background fills to avoid crash.

  *) [TS-3119] Add SO_LINGER socket option support.
   Author: Kang Li <kangli@yahoo-inc.com>

  *) [TS-3157] Standardize --help and --version arguments across tools.

  *) [TS-3143] Create new Regex class that uses PCRE JIT.

  *) [TS-3115] Add server response time logging fields.
   Author: Acácio Centeno <acaciocenteno@gmail.com>

  *) [TS-3154] Add proxy port access log tag as 'php'.
   Author: Acácio Centeno <acaciocenteno@gmail.com>

  *) [TS-3152] stop offerring HTTP/2 over TLS by default.

  *) [TS-3060] Fix memory leak in cleaning up tunnel resources.

  *) [TS-3147] Improvements fo ESI plugin.

  *) [TS-3145] Add traffic_line --backtrace option.

  *) [TS-2503]: Dynamic TLS Record Sizing for better page load latencies.

  *) [TS-3139] New script, traffic_primer, which will fetch a URL from origin
   (or another proxy) and PUSH the same object to a given set of
   caches. Useful for priming a pool of servers with the same object.

  *) [TS-3135] Disable SSLv3 by default. This can be enabled again by adding a
   line to records.config for proxy.config.ssl.SSLv3.

  *) [TS-3129] Parent proxy configuration does not work for incoming HTTPS
   requests.

  *) [TS-3127] Add config for OpenSSL session cache auto clear.

  *) [TS-3125] SSL ctx is set to a constant allowing for potential
   inappropriate session reuse.

  *) [TS-3060] Enhance POST timeout scenario to send HTTP status response.

  *) [TS-3120] Overlapping remap rank when using .include directives.
   Author: Feifei Cai <ffcai@yahoo-inc.com>

  *) [TS-3080] Optimized SSL session caching.

  *) [TS-3121] Prevent sending garbage HTTP/0.8 responses from SPDY.

  *) [TS-3116] Add support for tracking the use of the ioBuffers.

  *) [TS-3106] Keep Alive not correctly applied to errored pages.

  *) [TS-3109] Fix traffic_layout libhwloc linking on Ubuntu.

  *) [TS-2314] - remove possible invalid array index access from debug log.

  *) [TS-3112] - Add null pointer check for contp.

  *) [TS-3103] Improve privilege elevation.

  *) [TS-3044] Use eventfd in AIO_MODE_NATIVE if available.

  *) [TS-3108] Add port matching condition to header_rewrite.

  *) [TS-3068] Remove usage of Boost.

  *) [TS-2289] Removed old unused AIO modes.

  *) [TS-3098] Fix the ability to configure keep-alive on post to the origin.

  *) [TS-3085] Large POSTs over (relatively) slower connections failing.

  *) [TS-3092] Set SSL CTX timeout regardless of Session Cache.

  *) [TS-2095] Replace TS_FLAG_HEADERS wich AC_CHECK_HEADERS.

  *) [TS-2314] New config to allow unsatifiable Range: request to go straight
   to Origin.

  *) [TS-3006] Add SSL extensions and examples.
     Author: Susan Hinrichs <shinrich@network-geographics.com>

  *) [TS-3054] Forward partial chunked data to client to be more transparent.
     Author: Susan Hinrichs <shinrich@network-geographics.com>

  *) [TS-3084] Fix FIN forwarding issue with POST.
     Author: Susan Hinrichs <shinrich@network-geographics.com>

  *) [TS-3073] Fix FIN forwarding issue with transparent pass-through.
     Author: Susan Hinrichs <shinrich@network-geographics.com>

  *) [TS-3059] Add the TSTextLogObjectRollingSizeMbSet API function.
   Author: Brian Rectanus <brectanus@qualys.com>

  *) [TS-3081] FetchSM needs to notify body done, when no more read bytes in
   the buffer.

  *) [TS-2945] Add target port number support to the balancer plugin.

  *) [TS-3070] Make span configuration work consistently across platforms.

  *) [TS-3076] Fix minor strtok_r errors.

  *) [TS-2938] fix core dump in 307 redirect follow handling.

  *) [TS-3035] fix duplicate logging on error transactions.

  *) [TS-2955] support variable expansion in set-redirect operator for header_rewrite.

  *) [TS-3023] Support space separated values in inline plugin parameters in
   remap rules.

  *) [TS-3051] Fix libaio error handling.

  *) [TS-3071] Optionally emit JSON numbers in stats_over_http.
   Thanks to Saltuk Alakus <saltukalakus@gmail.com>

  *) [TS-3069] Add mysql_remap to autoconf.

  *) [TS-3066] Fix various build issues for OmniOS, broken since 5.0.x.

  *) [TS-407] Cleanup the syslog facility setup for traffic_server.

  *) [TS-3049] - Enhance FetchSM to handle response with "Connection:Close"
     header and limit the response header/body duplication to non-streaming
     scenarios for backward compatibility with TSFetchUrl().

  *) [TS-3039] Plug SSL memory leaks in OCSP stapling support.

  *) [TS-2832] docs: Add links from an API description to the source code for
   that object.

  *) [TS-3020] Blind Tunnel fake request URL is IPv4 only.
   Author: Patrick McGleenon <Patrick.McGleenon@openwave.com>

  *) [TS-2561] Remove example/app-template, it's no longer supported.

  *) [TS-3048]: Remove hard coded directory in TSPluginDirGet() regression.
   Author: Steven Feltner <steven.feltner@gmail.com>

  *) [TS-3047] The Makefile.am for traffic_top is inconsistent with the rest
   of the build system.

  *) [TS-3042] Fix the option to build a static traffic_server binary.

  *) [TS-3041] Add a traffic_layout tool to show the installed
   and configured file locations.

  *) [TS-3034] Use an unanchored regex match in traffic_line -m.

  *) [TS-3033] Reimplement the management protocol to use a generic
   message initial marshalling format.

  *) [TS-3027] Add hashed intermediate SSL certificate support.
   Author: Steven Feltner <steven.feltner@gmail.com>

  *) [TS-3031] Race condition in SSLNextProtocolSet::advertiseProtocols

  *) [TS-2983] Fix protocol probe to not skip data.

  *) [TS-3026] SPDY not forwarding Accept-Encoding for FF.

  *) [TS-2970] Fix assertions with transparent pass through.
   Author: Susan Hinrichs <shinrich@network-geographics.com>

  *) [TS-3150] atscppapi should support streaming HTTP fetch.

Changes with Apache Traffic Server 5.1.0

  *) [TS-2993] Update ats_pagespeed towards PSOL 1.8.31.4-stable.

  *) [TS-3005] Rename pagespeed plugin: ats_speed -> ats_pagespeed.

  *) [TS-3003] Remove overwriting of robots.txt in ats_pagespeed.

  *) [TS-2926] IP Clearance for ats_speed - PageSpeed optimization plugin.

  *) [TS-2954] Protect against DNS cache poisoning when
   proxy.config.http.use_client_target_addr is enabled.
   Author: Susan Hinrichs <shinrich@network-geographics.com>

  *) [TS-2995] Apply TOS/SO marks to client connection in all accept cases.

  *) [TS-2912] Don't clear stale object on HEAD request.

  *) [TS-2905] Change IP logging to print '0' instead of error text.

  *) [TS-2982] Interim cache compile errors.

  *) [TS-2584] Remove assert for negatively cached transformed objects.

  *) [TS-3001] GlobalSign responds 403 when OCSP request posted without Host header

  *) [TS-2913] Missing body factory template for permanent redirects.

  *) [TS-2279] Update range for proxy.config.exec_thread.affinity.

  *) [TS-3004] Update vendor_name and support_email in ats_speed plugin.

  *) [TS-2947] Make the setting proxy.config.http.global_user_agent_header.

  *) [TS-2902] Allow POST requests without a Content-Length header.

  *) [TS-2423] Add option for server sessions that use auth headers that can
   be placed into the shared pool.

  *) [TS-2635] remove unused include <net/ppp_defs.h>.

  *) [TS-3001] GlobalSign responds 403 when OCSP request posted without Host
   header.

  *) [TS-2722] authproxy: Eliminate the DNS lookup state, just use the client.

  *) [TS-2933] Fix post remap and effective URL.

  *) [TS-2972] authproxy: Change the hook used, to always do the auth.

  *) [TS-698] Add IP filter to logging.

  *) [TS-3002] Add DSCP support to header_rewrite.

  *) [TS-2564] Cherry pick for full cache compatibility.

  *) [TS-2362] Make cache backwards compatible to 3.2.0.

  *) [TS-2357] Add option to cache POST requests.

  *) [TS-2996] Add consistent hash method to parent selection.

  *) [TS-2332] Add Consistent Hash class.

  *) [TS-1800] Create one hashing infrastructure.

  *) [TS-2860] Add AArch64 support.

  *) [TS-2916] set response header properly for combo_handler plugin.

  *) [TS-2883] Core dump in TSFetchCreate().

  *) [TS-2991] SessionManager incorrectly releasing sessions back to pool.

  *) [TS-2986] Adding stats to TLS errors.

  *) [TS-2977] Move traffic_manager under the cmd subdirectory.

  *) [TS-2971] Authproxy plugin has inconsistent debug symbol.

  *) [TS-2976] Perform some librecords build cleanup.

  *) [TS-2975] Add cache lookup status support to the xdebug plugin.

  *) [TS-2974] Add a new metrics plugin to support the Epic monitoring system.

  *) [TS-2973] Add milestones support to the xdebug plugin.

  *) [TS-2957] Add new sslheaders plugin.

  *) [TS-2802] Add SNI support for origin server connections.
   Author: Wei Sun <sunwei@yahoo-inc.com>

  *) [TS-2958] url_sig: remove printf's and make redirects use appropriate
   status codes.

  *) [TS-2939] Metalink: Fix crash when checking the digest of a file
   that wasn't cacheable.

  *) [TS-2922] Support the new ppc64le platform. Author: Breno Leitao

  *) [TS-2944] Remove the proxy.config.http.record_tcp_mem_hit configuration variable.

  *) [TS-2924] Configurable client's ssl protocols and cipher suite.

  *) [TS-2915] SEGV occurs when POST request was posted without Expect:
   100-continue header.

  *) [TS-2940] Fix varargs corruption when logging fatal errors.

  *) [TS-2935] Clean up semaphore platform code.

  *) [TS-2930] missing hostname in ts.client_request.get_url() for lua plugin.

  *) [TS-2934] Default remap rule will remap synthetic test.

  *) [TS-2904] Add Via header decoder option to traffic_line.
   Author: Meera Mosale Nataraja <mechins@gmail.com>

  *) [TS-2932] Add an option to specify the build number at configure time.

  *) [TS-2931] Plugin metrics fail after a crash.

  *) [TS-2649] Use SSL certificate chain loading everywhere.

  *) [TS-2780] Core dump in SpdyRequest::clear() in production testing of SPDY.

  *) [TS-2929] SPDY should allow arbitrary methods.

  *) [TS-2921] Fix build failure from TS-2893.
   Author: Ryo Okubo <rokubo@yahoo-corp.jp>

  *) [TS-2893: improved support for ECDSA certificates.
   Author: Wei Sun <sunwei@yahoo-inc.com>

  *) [TS-2919] Omit git contol files from tarball releases.

  *) [TS-2906] SPDY incorrectly marks streams as internal requests.

  *) [TS-2574] Sharing server sessions per thread doesn't work when doing
   https to http.

  *) [TS-2689] Remove extraneous TSfree that caused segfault.

  *) [TS-2892] Keep alive post out enabled by default.

  *) [TS-2889] Crash in FetchSM related to spdy FetchSM changes in 5.0.x.

  *) [TS-2891] Fix casting bug in remap_stats.

  *) [TS-2879] Remap errors and redirects should honor keep-alive.

  *) [TS-2236] Remove trailing null in response body set by fabricate_with_old_api.
   Author: Thach Tran <tranngocthachs@gmail.com>

  *) [TS-2877] http_load waits until timeout when response body is zero.
   Author: Masaori Koshiba <mkoshiba@yahoo-corp.jp>

Changes with Apache Traffic Server 5.0.0

  *) [TS-2885] Change LuaJIT to build statically, add --disable-luajit. This
  is an option that will eventually be removed as we make LuaJIT mandatory.

  *) [TS-2886] Fix regression where body factory is not used.

  *) [TS-2881] Redirection handling broken

  *) [TS-2875] Change hwloc library env variables from hwloc_ to HWLOC_.

  *) [TS-2874] Make some of the SPDY metrics persistent, and also fix how we
   measure transaction time / total streams.

  *) [TS-2872] Can't set "Send Window" for SPDY/3.1 > 64k. Code mostly
   provided by our SPDY brainiac, Geffon.

  *) [TS-2873] Cleanup SPDY metrics and configs, also make it use the common
   pattern for stats increments/decrements (even though it's ugly, sorry amc).

  *) [TS-2870] Update SPDY defaults to better match our other defaults.

  *) [TS-2868] Error setting HSTS max age with traffic_line.

  *) [TS-2776] Core dump inside openssl library.

  *) [TS-2845] Commit e6b9cb533 causes problems with stats_over_http.

  *) [TS-1981] Url remap and IPAllow method filtering is broken with non-wks method
   and add support for arbitrary methods.

  *) [TS-2865] Fix warnings in collapsed connection plugin.

  *) [TS-2580] SSL Connection reset by peer errors in 4.2.0-rc0.

  *) [TS-2783] Update documentation defaults, and fix RecordsConfig.cc.

  *) [TS-2792] Large request header causes unexpected remap.
   Author: Masakazu Kitajo <m4sk17@gmail.com>

  *) [TS-2834] header_rewrite: Add Internal transaction and client-IP
   conditions.

  *) [TS-2855] Add the TSHttpIsInternalSession API.

  *) [TS-2859] Remove DBG macros to not generate warnings from GCC 4.9.

  *) [TS-2858] Build failures on OmniOS. Also add some LuaJIT flags as per
   Theo's and Daniel's recommendations.

  *) [TS-2857] Cleanup SPDY and SSL stat names.

  *) [TS-2856] Remove proxy.config.spdy.verbose_in and use diags instead

  *) [TS-2391] Traffic Server tries to reverse resolve 127.0.0.1.

  *) [TS-2837] Dangling pointer in URLImpl which may cause core dump.

  *) [TS-2842] Can't set SPDY inactivity timeout with traffic_line.

  *) [TS-2618] IOBufferBlock::realloc()'s bounds check is wrong.

  *) [TS-2850] Fix logging of response header length.

  *) [TS-2839] tsxs does not work on OSX (Darwin).
   Author: Masakazu Kitajo <m4sk17@gmail.com>

  *) [TS-2820] Add check to Transformations in C++ api to prevent closing
   connections twice.

  *) [TS-2804] Add regex_revalidate plugin to explerimental plugins directory.

  *) [TS-2528] Use <stdbool.h> in the public mgmtapi.h interface. This follows
   the C99 standard, and we should move other public APIs to it.

  *) [TS-2428] Move P_Freer.h continuations to run on ET_TASK (if available).

  *) [TS-2344] 404 error was logged while url redirect request was processed
   correctly.

  *) [TS-2753] Add more SPDY and HTTPS statistics.

  *) [TS-2677] Don't apply path / scheme URL changes in remap when method is
   CONNECT.

  *) [TS-2308] includedir in config.layout is not used.

  *) [TS-2527] mgmtapi.h should be C style. This is slightly ugly in the core
   now, but that public struct/union has to be named to be C99 compliant.

  *) [TS-2838] Add logging fields for plugins to TS connect API. Use for SPDY.

  *) [TS-2833] Remove REC_BUILD_STAND_ALONE, REC_BUILD_MGMT and
   REC_BUILD_STUB. Dead code.

  *) [TS-2547] Remove Resource.c/h, and NEW as well.

  *) [TS-1588] slow log should include client addr

  *) [TS-2728] The lib/perl Makefile.am does not properly detect in-source
   builds, generating errors.

  *) [TS-2723] add new features to ts_lua plugin.
   Author: Quehan <quehan@taobao.com>

  *) [TS-2816] Bump the minor cache version for ATS 5.0 release

  *) [TS-2764] Remove when_to_add_no_cache_to_msie_requests configuration.

  *) [TS-2737] Rename rfc5861 plugin to stale_while_revalidate.

  *) [TS-2400] Our default SSL cipher-suite advocates speed over security

  *) [TS-2818] TSHttpTxnServerAddrSet() doesn't update the server port

  *) [TS-2793] Remove UnixNetVConnection::selected_next_protocol.

  *) [TS-2831] Add SPDY stream count statistic.

  *) [TS-1665] Remove the old traffic_shell (R.I.P.).

  *) [TS-2830] Make SPDY configurable.

  *) [TS-2684] Add a text-log format to background_fetch plugin.

  *) [TS-2577] Tracing on e.g. -T http_hdrs does not show Proxy Request
   headers accurately. Author: Masakazu Kitajo <m4sk17@gmail.com>

  *) [TS-1486] Drop support for Sun Studio compilers.

  *) [TS-2765] Memory Leak in SSLConfig initialization

  *) [TS-1125] POST's with Expect: 100-continue are slowed by delayed 100
  response

  *) [TS-2826] SPDY implementation does not support OPTIONS and TRACE methods

  *) [TS-2274] Minimize the default records.config, and also fix a number of
   inconsistencies and missing configs in RecordsConfig.cc. This is as per
   discussions on IRC etc. I have verified that traffic_line -m reports the
   same internal values for all configs before and after this change. In
   addition, the following defaults are changing:

      - proxy.config.url_remap.pristine_host_hdr -> 0
      - proxy.config.http.normalize_ae_gzip -> 1
      - proxy.config.http.cache.ignore_client_cc_max_age -> 1
      - proxy.config.http.background_fill_active_timeout -> 0
      - proxy.config.http.background_fill_completed_threshold -> 0.0
      - proxy.config.cache.enable_read_while_writer -> 1
      - proxy.config.net.sock_send_buffer_size_in -> 0
      - proxy.config.cache.permit.pinning -> 1
      - proxy.config.diags.show_location -> 1
      - proxy.config.dns.round_robin_nameservers -> 1
      - proxy.config.http.connect_ports -> 443
      - proxy.config.log.custom_logs_enabled -> 1
      - proxy.config.spdy.client.max_concurrent_streams -> 100
      - proxy.config.env_prep -> NULL

  *) [TS-2824] Revert TS-2592.

  *) [TS-2632] Do not lock the object in cache (by default) on Range
   requests. This adds proxy.config.http.cache.range.write.

  *) [TS-2822] Crash in LogBufferIterator::next

  *) [TS-2705] Make the background fill check more robust.

  *) [TS-1411] Seg fault when using %<cquuc>

  *) [TS-2739] ATS doesn't send back Transfer-Encoding when client keep-alive
     is turned off

  *) [TS-2253] PluginVC::process_close Segmentation fault

  *) [TS-2823] Change the Mgmt API names TSEvent and TSError to avoid name
     collisions with the plugin API.

  *) [TS-2029] Eliminate CacheHttpHdr argument from Cache::generate_key().

  *) [TS-2821] Added configuration for max concurrent streams for SPDY.

  *) [TS-2558] Remove check for inbound transparency vs. SSL.

  *) [TS-2810] Add the TSVConnFdCreate API.

  *) [TS-2342] Problem with cache.cache_responses_to_cookies value 0.
   Author: Paul Marquess <Paul.Marquess@owmobility.com>

  *) [TS-2751] Remove the ProtocolNetAccept layer.

  *) [TS-2815] SSL orgin server connection hangs if ssl handshake is slow

  *) [TS-2788] Make proxy.config.alarm.bin reloadable.

  *) [TS-2811] Error logged in regex_remap when lowercase_substitutions option
   is used.

  *) [TS-2791] SPDY POST transactions failing with ERR_CLIENT_ABORT.

  *) [TS-2805] Client connections are connecting with SPDY 3 instead of 3.1.

  *) [TS-2619] Changed TSRecordDump declaration from TSRecordType to int to
   accommodate bit-masks. Also changed TSRecordType enums to hexidecimal, as
   this is easier to read for bit arguments.

  *) [TS-2797] docs: Build all manual pages in the doc/reference/api
   directory.

  *) [TS-2733] Do not build the old SPDY plugin.

  *) [TS-2716] Fix indentation for ts_lua plugin.

  *) [TS-2789] Typo in HttpSessionManger would cause ATS reuse wrong session
   to origin server.

  *) [TS-2636] Enhance ATS custom logging to support WIPE_FIELD_VALUE filter
   action.

  *) [TS-2786, TS-2784] Make Lua and header_rewrite plugins compile on FBSD.

  *) [TS-1375] Setting default inactivity timeout, if one is not set, to 1
   day.

  *) [TS-2780] Core dump in SpdyRequest::clear() in production testing of
   SPDY.

  *) [TS-2744] Remove TSNetAcceptNamedProtocol assertion for unknown
   protocols.

  *) [TS-898] Stop the esi plugin referencing invalidated strings.

  *) [TS-2778] Websockets remap doesn't properly handle the implicit port for
   wss.

  *) [TS-2774] TS::AdminClient.pm's get_stat API broken in 5.0.

  *) [TS-2766] HdrHeap::coalesce_str_heaps doesn't properly calculate new heap
   size.

  *) [TS-2767] ATS Memory Leak related to SPDY.

  *) [TS-2757] Fix logging crashes on reconfiguration.

  *) [TS-2770] Allow proxy.config.log.rolling_interval_sec to be as low as 60sec.

  *) [TS-2772] Clean up mgmt/preparse code.

  *) [TS-2763] Remove the unused proxy.config.log.xuid_logging_enabled config
   setting.

  *) [TS-2762] Core dump when benchmarking SPDY.

  *) [TS-2755] Document TSTextLogObjectRollingEnabledSet.

  *) [TS-2746] Rename session accept layer with a standard convention.

  *) [TS-2754] Emit a tcpinfo log on TS_EVENT_HTTP_TXN_CLOSE.

  *) [TS-2760] Add TSFetchClientProtoStackSet/Get() API in experimental.h.

  *) [TS-2743] Ignore invalid HTTP headers in SpdyNV carefully.

  *) [TS-2742] TSFetchCreate should accept both IPv4 and IPv6.

  *) [TS-2736] Add config option to set the max open files limit for the
    traffic_server process to some percentage of the fs.file-max proc value on
    Linux. The default is 90%.

  *) [TS-2741] Add a server intercept example plugins and documentation.

  *) [TS-2616] Sanitize duplicate Transfer-Encoding: chunked headers.
   Author: Dimitry Andric <dimitry@andric.com>

  *) [TS-645] Remove broken hard restart from traffic_shell.

  *) [TS-2562] Improve init script support for Debian/Ubuntu.
   Author: Tomasz Kuzemko <tomasz@kuzemko.net>

  *) [TS-2735] Align all memory during freelist allocations.

  *) [TS-2120] remove stale_while_revalidate plugin.

  *) [TS-2732] Add url_sign (Signed URL's) plugin.
   Author: Jan van Doorn <jvd@knutsel.com>

  *) [TS-2650] Redirect handling enhancements in ATS.

  *) [TS-2548] Add client IP to SSLError() calls in SSLNetVConnection

  *) [TS-2710] ATS serves the wrong cert because it matches wildcard certs
   incorrectly.

  *) [TS-2704] Core dump in state_raw_http_server_open getting EVENT_INTERVAL
   event.

  *) [TS-2720] Fix bug with request transformations in C++ api

  *) [TS-2714] Promote the tcp_info plugin to stable as 'tcpinfo'.

  *) [TS-2708] Refactor and modernize the tcp_info plugin.

  *) [TS-2555] Adding global plugin support to ts_lua plugin.

  *) [TS-2717] header-rewrite set-redirect not working.
   Author: Igor Brezac

  *) [TS-2715] Fix some ESI compile warnings, change the constants to
   be part of an include.

  *) [TS-898] Remove pointless NULL check on address of array.

  *) [TS-898] Avoid passing -1 to close (2) in traffic_cop.

  *) [TS-898] Fix minor regex_remap parsing bug.

  *) [TS-2711] Include Lua JIT as a Submodule.

  *) [TS-898] Ensure the cache span probe always closes file descriptors.

  *) [TS-2706] Replace the tcp_info plugin config file with options.

  *) [TS-2691] Fix how we count redirect retries in the core and APIs.

  *) [TS-2693] Deprecate the old TSRedirectUrlSet()/TSRedirectUrlGet().

  *) [TS-2692] Add an API to Get the current redirection retry count,
   TSHttpTxnRedirectRetries().

  *) [TS-2707] Migrate TSRedirectUrlSet/Get to TSHttpTxnRedirectUrlSet/Get.

  *) [TS-2690] Fixes and improvements for the escalate plugin.

  *) [TS-2699] Add TSClientProtoStackCreate API.

  *) [TS-2678] Some sites (e.g. craigslist) fails to load due to
   incorrect truncated response detection.

  *) [TS-2603] Do not update HostDB for server intercept requests.
   Author: Quehan <quehan@taobao.com>

  *) [TS-2622] Optimize the ink_cluster_time() function.
   Author: Yu Qing <zhuangyuan@taobao.com>

  *) [TS-2701] Silence traffic_cop logging on chown of missing lock files.

  *) [TS-2656 Determine server connection scheme immediately before
   connecting. Author: Ron Barber <rwbarber2@gmail.com>

  *) [TS-2578] Close the client connection when you close TransformTerminus.
   Author: Jack Bates <jack@nottheoilrig.com>

  *) [TS-2657] Eliminate TSHttpTxnSetHttpRetBody() and improve upon
   TSHttpTxnErrorBodySet(). This also reduces the size of the HttpSM by 25%.

  *) [TS-2589] Don't hold up the response until the server starts sending
   content. Author: Jack Bates <jack@nottheoilrig.com>

  *) [TS-2687] Support for MIPS paltform.
   Author: Dejan Latinovic <Dejan.Latinovic@rt-rk.com>

  *) [TS-2688] atscppapi: new example plugin Boom.
   Author: Omer Shapira <oshapira@linkedin.com>

  *) [TS-2686] Change background_fetch to defer cacheability check until
   SEND_RESPONSE_HDR hook. This allows for other READ_REQUEST_HDR hooks to
   modify the response header before we evaluate.

  *) [TS-2679] background_fetch plugin can use uninitialized cont pointer.

  *) [TS-2675] Metalink: Fix crash and plug memory leaks.
   Author: Jack Bates <jack@nottheoilrig.com>

  *) [TS-2674] Remove debug printf() from traffic_top.

  *) [TS-2652] atscppapi: Providing a cancel() in asyncproviders .

  *) [TS-2667] atscppapi: Allow intercept plugins to access request headers
   object.

  *) [TS-2672] TSMimeHdrFieldDestroy should not assert on removed fields.

  *) [TS-2554] New plugin: background_fetch, which under certain conditions
   will kick off a background fetch when it detects Range request and
   responses. This allows for the cache to start populating objects that would
   otherwise not be cacheable. This is ideally used together with the
   read-while-writer feature as well.

  *) [TS-2671] Restore missing .useflt remap directive.

  *) [TS-2654] Crash in Range requests with read-while-writer.

  *) [TS-2665] Clean up ink_stack_trace_dump code
   Thanks to Alexey Ivanov <aivanov@linkedin.com> for reporting this issue.

  *) [TS-2663] Wrong condition on log code for server connection errors.
   Author: David Binderman <dcb314@hotmail.com>

  *) [TS-2664] atscppapi: Removing initializable values.

  *) [TS-2660] Rename StateMachineAction_t values for legibility.

  *) [TS-2662] Re-enable KEEP_ALIVE_POST_OUT by default.

  *) [TS-2661] Remove unused HttpSM::decided_cached_url.

  *) [TS-2658] Additional debug logging for SSL certificates.

  *) [TS-2431] Migrate Taobao SPDY plugin to ATS core.

  *) [TS-2651] atscppapi: race conditions in destruction of async providers

  *) [TS-2646] regex_remap: Add a new option, @caseless.

  *) [TS-2647] atscppapi: Bug fixes in headers and atscppapi.

  *) [TS-2598] Expose HttpDebugNames to public plugin APIs.

  *) [TS-2639] Release HttpClientSession objects back to the proxy allocator.

  *) [TS-2637] Add traffic_line records match option.

  *) [TS-2630] Add lib/ts/apidefs.h to place common types.

  *) [TS-2610] Add "client_protocol_stack"(%<cps>) field into LogFormat.

  *) [TS-2612] Indroduce TSHttpConnectWithProtoStack() API.

  *) [TS-1062] Extends and optimizes FetchSM.

  *) [TS-2631] Header_rewrite should support changing destination in non-remap
   case.

  *) [TS-2623] Remove the limit on the number of cachurl regular expressions.

  *) [TS-2628] traffic_line should tell you when a reload is needed.

  *) [TS-2627] Reduce management socket code duplication.

  *) [TS-2625] trafficserver.in doesn't use TS_BASE.

  *) [TS-2624] Make thread affinity more robust.

  *) [TS-2620] Make the stats_over_http plugin publish node and plugin stats.

  *) [TS-2614] Response to invalid Content-Length for POST should be a 400
   error. Author: Ron Barber <rbarber@yahoo-inc.com>

  *) [TS-2615] Better logging and error handling in SSL client session startup.

  *) [TS-2613] Can't turn on attach server session to client from
   records.config.

  *) [TS-2611] Add a new S3 authentication plugin, s3_auth. This only supports
   the v2 features of the S3 API.

  *) [TS-2522] Better hook management for header_rewrite plugin, and some
   cleanup.

  *) [TS-2169] Add SSL statistics
   Author: Ron Barber <rbarber@yahoo-inc.com>

  *) [TS-2607] Fix TS_USE_HWLOC #define in build process

  *) [TS-2595] DNS lookup failed with multiple search domains.
   Author: Thach Tran <tranngocthachs@gmail.com>

  *) [TS-2019] Fix the "vector inconsistency" errors.

  *) [TS-2585] Add overridable configs support to regex_remap plugin.
   Author: Ethan Lai <yzlai@yahoo.com>

  *) [TS-2569] Set the default SSL options correctly.
   Author: Ron Barber <rbarber@yahoo-inc.com>

  *) [TS-2599] Remove dead code in RedCore related to Record Types

  *) [TS-2593] HTTPS to origin fails on CentOS6.x. This is a regression of
   sort from TS-2355.

  *) [TS-2576] Add Oct/Hex escape representation into LogFormat

  *) [TS-2494] fix the crash that return the stale cached document
   when os is down, even if it`s status is not 200 (ok).

  *) [TS-2590] Translate documentation into Japanese.
   Authors: Masaori Koshiba <masaori335@gmail.com>
            Masakazu Kitajo <m4sk17@gmail.com>
            syucream <syucream1031@gmail.com>

  *) [TS-2586] Improvements to the internal implementation of overridable
   configuration lookups (_conf_to_memberp() ).
   Author: Yu Qing <zhuangyuan@taobao.com>

  *) [TS-2210] Add a plugin API to manipulate the session's SSL context.
   Author: Kang Li <kangli@yahoo-inc.com>

  *) [TS-2542] Turn on caching zero length responses by default.

  *) [TS-2405] Change the default for proxy.config.net.sock_option_flag_out to
   1, which enables TCP_NODELAY.

  *) [TS-2531] The default remap rule doesn't match a forward proxy request

  *) [TS-612] Add support for SSL keys with passphrases.
   Author: Ron Barber <rbarber@yahoo-inc.com>

  *) [TS-2319] Change default behavior for the various ignore-mismatch
   configurations.

  *) [TS-2563] Always set the SSL default verify paths.
   Author: Wei Sun <sunwei@yahoo-inc.com>

  *) [TS-2437] Add a lifecycle hook to expose loaded SSL certificates to
   plugins. Author: Wei Sun <sunwei@yahoo-inc.com>

  *) [TS-2582] Make traffic_cop debugging eadier by logging to stdout.

  *) [TS-2579] Remove ipv4 limit for FetchSM and TSFetchUrl/TSFetchPages.

  *) [TS-1893] Add more options to server session control.

  *) [TS-2239] Initial ALPN TLS extension support.

  *) [TS-2568] Better template messages.

  *) [TS-2567] Add --install-test-tools configure option.

  *) [TS-1622] Add a new API, TSHttpTxnIsCacheable(), which allows a plugin
   to determine whether a request (and/or response) would be cacheable.

  *) [TS-2560] regex_remap lowercase substitutions is not being initialized in
   the construtor

  *) [TS-2559] Disconnect clients on unrecoverable origin errors.

  *) [TS-2556] Fix ink_hrtime_diff_msec.

  *) [TS-2553] Metalink: Fix a segfault reported by Faysal Banna and
   preserve the Content-Length header
   Author: Jack Bates <jack@nottheoilrig.com>

  *) [TS-2195] Remove the (deprecated) TSHttpTxnCacheLookupSkip API.

  *) [TS-2229] Deprecate the header_filter plugin, use header_rewrite instead.

  *) [TS-2290] Remove X-ID special log tag, and cleanup HdrToken confusion.

  *) [TS-2088] Change TSRecordType enum values to powers of two

Changes with Apache Traffic Server 4.2.0

  *) [TS-2552] configure fails to detect missing the #define for
   SSL_CTX_set_tlsext_ticket_key_cb().

  *) [TS-2549] printf() compiler warnings  on OSX (clang) with the CPP APIs.

  *) [TS-2532] Fix make distclean for C++ API examples.

  *) [TS-2306] Client connection hang while downloading big file from origin
   server over SSL connection

  *) [TS-2353] Add ability to load ssl certs that are owned by root and only
   read only by the user

  *) [TS-2551] Eliminate the tr1 dependency from CPP APIs.

  *) [TS-2541] Add WebSocket support

  *) [TS-2550] Add inline configuration overrised to the conf_remap plugin.

  *) [TS-2546] Move xptr and _xstrdup to ink_memory.{h,cc}.

  *) [TS-2180] Small memory leak in RecCore.cc, from previous refactoring.

  *) [TS-2534] Make sure RecRecord structs are always properly initialized.

  *) [TS-2483] Add a new metric, proxy.node.restarts.proxy.cache_ready_time,
   tracking absolute time when the cache started (finished
   initialization). Until cache is available, or no cache configured, this
   metric stays at a value of "0".

  *) [TS-2517 First implementation of traffic_shell.pl, and reorg the modules
   a bit for more consistency. Also fixes a timeout issue in AdminClient.pm.

  *) [TS-1467] Disable client initiated renegotiation (SSL) DDoS by default

  *) [TS-2538] Cleanup of ProcessMutex (unused) and InkMutex (dupe of
   ink_mutex). We now use ink_mutex consistently.

  *) [TS-2544] conf_remap plugin: allow for multiple configuration files.

  *) [TS-2530] Check for loopback interfaces when computing the local address.
   Author: Ron Barber rbarber@yahoo-inc.com

  *) [TS-2031] Prevent duplicate SSL SNI name registration.
   Author: Feifei Cai <ffcai@yahoo-inc.com>

  *) [TS-2501] Refactor and improve performance for the case without
   expansions. Review: Alexey Ivanov <aivanov@linkedin.com>.

  *) [TS-2533 ] Add three commands previously provided by traffic_shell.

  *) [TS-2304] Make the healthcheck plugin watch for file permission changes.

  *) [TS-2519] Make build version metrics non-persistent.

  *) [TS-1606] Log buffers are not flushed periodically when TS is launched
   with NO_REMOTE_MANAGEMENT flag

  *) [TS-2481] Incorrect origin server port used sometimes (with keep-alive).
   Author: Dimitry Andric <dimitry@andric.com>

  *) [TS-2526] Remove the g_stats_snap_fpath global variable.

  *) [TS-2525] Remove restrictions on outbound transparency with SSL.

  *) [TS-2425] Update to TS-2261 for loading plugins as root

  *) [TS-2505] Add traffic_line --offline option.

  *) [TS-2305] Fall back to ftruncate if posix_fallocate fails.

  *) [TS-2504] Support OpenSSL installations that use the lib64 directory.

  *) [TS-799] Have AdminClient.pm created from .in file.

  *) [TS-2509] Add the const qualifier to pure HttpTunnel member functions.

  *) [TS-2508] Add a *highly* experimental escalation plugin.

  *) [TS-2507] Fix the state transition logging in HttpSM::handle_server_setup_error.

  *) [TS-1648] Segmentation fault in dir_clear_range()

  *) [TS-2500] Fix handling of cache stripe assignment when a disk is
   taken offline.

  *) [TS-2499] Fix the header_rewrite plugin expansions of the new %<>
   strings. Author: Alexey Ivanov <aivanov@linkedin.com>.

  *) [TS-2498] Add a build option to install the example plugins.

  *) [TS-2484] Add API support for the two missing overridable APIs:
         proxy.config.http.cache.max_open_read_retries
         proxy.config.http.cache.open_read_retry_time

  *) [TS-2497] Failed post results in tunnel buffers being returned to
   freelist prematurely.
   Reporter: Thomas Jackson <thjackso@linkedin.com>

  *) [TS-1668] Added HSTS configuration options to ATS

  *) [TS-2495] Reduce the size of HttpVCTableEntry.

  *) [TS-2491] stop other esi plugin unit test programs after error.
   Author: Yu Qing <zhuangyuan@taobao.com>

  *) [TS-1821] make the AIO test pass when build with native aio.

  *) [TS-2412] fix the bug of restarting ATS causes complete cache data
  loss when use linux-native-aio.

  *) [TS-2488] enhance esi plugin to allow any of the space characters to
   follow esi starting tags.
   Author: Yu Qing <zhuangyuan@taobao.com>

  *) [TS-2489] Fix esi plugin problem with contents in comments output
   twice when the node list is cached.
   Author: Yu Qing <zhuangyuan@taobao.com>

  *) [TS-2336] First attempt at moving the Prefetch APIs into some usable
   state. There's still work to be done here, but separate bugs for that.

  *) [TS-2487] Export PUSH HTTP method constants to the TS API.

  *) [TS-2486] Eliminate SIMPLE_MEMCPY_INIT define.

  *) [TS-2476] Fix size_t format string.
   Author: Radim Kolar <hsn@sendmail.cz>

  *) [TS-2471] Writing records.config can fail when the disk is full.
   Author: Yu Qing <zhuangyuan@taobao.com>

  *) [TS-2479] Don't output orphan log after failover sucessfully.

  *) [TS-2370] SSL proxy.config.ssl.server.honor_cipher_order is backwards.
  Changed the default setting and changed the meaning of it in the code.

  *) [TS-2466] NOT increase the version of records.config when changing
   the local parameter
   Author: Yu Qing

  *) [TS-2469] remove libreadline which is gpl licensed.
   Author: Ben Aitchison <ben@meh.net.nz>

  *) [TS-2235] url_print should NOT output "?" for empty query string,
   fix two remains.
   Author: Yu Qing

  *) [TS-2475] Adding new transaction methods in C++ API

  *) [TS-2474] Change proxy.config.net.poll_timeout to 10ms consistently.

  *) [TS-2473] Fix C++ API includes for FreeBSD.
   Author: Radim Kolar <hsn@sendmail.cz>

  *) [TS-2467] traffic_shell doesn't work with tcl 8.6.
   Author: Ben Aitchison <ben@meh.net.nz>

  *) [TS-1365] Add a new configuration option, proxy.config.net.poll_timeout,
   with the same behavior as the command line option --poll_timeout. Also
   adjust AIO scheduling to correlate to this setting, to avoid additional
   CPU load. Note that this configuration is generally not necessary to
   configure, unless you are concerned with system idle CPU consumption.

  *) [TS-2468] Bring back the load balancer plugin.

  *) [TS-2465] libxml2 detection generates an invalid linker path.
   Author: Radim Kolar <hsn@sendmail.cz>

  *) [TS-2271] Threaded plugin support with 3rd party libraries.
   Author: Heikki Hannikainen <hessu@hes.iki.fi>

  *) [TS-2464] Remove useless and buggy connection header handling

  *) [TS-2457] Protocol.c: change usage of atoi to strtol.
   Author: Radim Kolar <hsn@sendmail.cz>

  *) [TS-2459] Fix wrong name for a couple of librecord APIs.
    Author: Yu Qing <happy_fish100@yahoo.com.cn>

  *) [TS-2463] Crash regression around slow-log feature, when logging an
   event. This fixes commit c290ce0df2a.

  *) [TS-32] Fix ICP. Author: Gota Adachi <ada@iij.ad.jp>

  *) [TS-2248] Segmentation fault in HttpTunnel with flow control.
   Author: bettydramit <b13621367396@gmail.com>

  *) [TS-2454] Fix undefined reference to `__sync_fetch_and_sub_8' on ARM
   32bit system.

  *) [TS-2450] Fix assertion failure for T61String type.

  *) [TS-2117] make hipes plugin build.

  *) [TS-2452] Can't access a deleted object.

  *) [TS-2363] Fix assertion of "Unknown file format type!".

  *) [TS-2448] Fix traffic_cop and traffic_manager to obey the
   proxy.config.local_state_dir setting.

  *) [TS-2445] Fix problem with 204 responses closing POST requests.

  *) [TS-2434] Use the FATAL error level to handle plugin errors.

  *) [TS-2203] Clarify syslog startup messages for standalone log programs.

  *) [TS-2436] Add a simple integration test harness.

  *) [TS-2355] ATS 4.0.x crashes when using OpenSSL 1.0.1e.

  *) [TS-2432] Fix a race in aio_err_callblk.

  *) [TS-2251] Simplify LogBuffer reference counting.

  *) [TS-2190] Remove cache.log from the cachurl plugin.

  *) [TS-2426] Add a new plugin, xdebug, for cache debugging using HTTP
   headers.

  *) [TS-2077] Remove pipeline configurations, they were no-op's anyways. We
   still support pipelining (we always do), it's just not treated specially
   (or optimized).

  *) [TS-2386] clean up unused files and codes -- round 4.2.

  *) [TS-548] remove Initialize.cc Initialize.h

  *) [TS-2082] remove STANDALONE_IOCORE FIXME_NONMODULAR and NON_MODULAR
   defines.

  *) [TS-312] Add option to always share keep-alive connections to the origin
   server.

  *) [TS-2419] Don't close client connection when responding with a 204 and
   there is no body.

  *) [TS-1146] Add RFC 5077 TLS session ticket support.
   Author: Wei Sun <sunwei@yahoo-inc.com>

  *) [TS-2401] Use Layout instead of global install path directories.

  *) [TS-2420] Remove STAT_SYNC, CONF_SYNC, and REM_SYNC threads and schedule
   those continuations in ET_TASK.

  *) [TS-2372] Enable TLS perfect forward security with ECDHE.

  *) [TS-2416] Make TLS the session timeout threshold configurable.
   Author: Wei Sun <sunwei@yahoo-inc.com>

  *) [TS-2335] adding ts_lua plugin to experimental directory.

  *) [TS-2347] buffer_upload uses unsafe function tempnam(). Replace it
   with mkstemp().

  *) [TS-1815] Add thread number and port to accept thread name and
   add the file descriptor number to the ET_AIO thread names.

  *) [TS-2415] Use standard continuations to release UrlRewrite objects.

  *) [TS-2413] Release memory for idle SSL connections.
   Author: Wei Sun <sunwei@yahoo-inc.com>

  *) [TS-2365] Configure the maximum TLS record size.
   Author: Wei Sun <sunwei@yahoo-inc.com>

  *) [TS-2351] Bandaid fix for Range request crash related to
   Read-While-Writer and content length calculations.

  *) [TS-2408] Fix double free of proxy.config.admin.user_id.

  *) [TS-2396] UrlRewrite.cc does not free the queue correctly.
   Author: Yu Qing <zhuangyuan@taobao.com>

  *) [TS-2382] Partial fix for make install creating man files as root.

  *) [TS-2381] Reorganize TSUrlCreate docs into separate files.

  *) [TS-2377] Install man pages as part of the build.

  *) [TS-2379] Add a new field: '%<chp>', "client_host_port" to LogFormat.

  *) [TS-2374] Abort the producer if the none of it`s consumers is alive.

  *) [TS-2330] Update proxy.config.body_factory.enable_customizations comments
   in records.config.

  *) [TS-2327] TSRedirectUrlSet does not perform DNS lookup of redirected OS.

  *) [TS-1468] Check vary and accept headers on non-200 responses in cache.

  *) [TS-2352] refine THREAD_ALLOC feature.

  *) [TS-2364] Introduce slice notation to field syntax in log format.

  *) [TS-2360] Fix usage of TSMimeHdrFieldValueStringGet() IDX in some plugins.

  *) [TS-2361] Load regex_remap configuration relative to the configuration
   directory.

  *) [TS-2359] Make install over existing installation can fail.

  *) [TS-2350] Enhancements to traffic_top.

  *) [TS-2348] Rename tstop to traffic_top.

  *) [TS-2384] Fix regression in key-lookup code between 4.0.x and 4.1.x.

  *) [TS-2340] Fix TextLogObject log rolling.
   Author: bettydramit <b13621367396@gmail.com>

  *) [TS-2343] Remove the --schema option from Traffic Manager, and the code
   around it.

  *) [TS-2316] header_rewrite: numerous improvements: cookie based conditions,
   rule counters, improved documentation.
   Author: Alexey Ivanov <aivanov@linkedin.com>

  *) [TS-2338] Remove IPRange.cc and .h, and SocksParser.cc.

  *) [TS-2333] Change the SAX callbacks to not clash with libxml2, which broke
   synthetic metric completely.

  *) [TS-2339] Cleanup Makefile.am, fixing missing / wrong _SOURCES entries.

  *) [TS-2341] Cast TSHttpStatus to int to suppress compiler warning in clang.

  *) [TS-2303] Incorrect docs for negative_caching_enabled.
    Author: Thomas Jackson <jacksontj.89@gmail.com>

  *) [TS-2712] Explicitly use subdir-objects in automake init.

  *) [TS-2309] Allow mod_generator plugin for lighttpd to accept "SI" postfixes.

Changes with Apache Traffic Server 4.1.0

  *) [TS-2252] Fix bison version check on Ubuntu.

  *) [TS-2108] Fix TSConfig to build with bison 3.0

  *) [TS-2311] ESI: Support responses that are of other text content type as
   well as non-200 status response. Author: Kit Chan

  *) [TS-2321] C++ API: Clean up header code to not use STL containers and use
   structures directly.

  *) [TS-2323] Implement a .include directive for remap.config.

  *) [TS-2322] Set PCRE malloc hooks globally.

  *) [TS-1955] Range: requests during read-while-writer gets the wrong
  Content-Length.

  *) [TS-2245] This adds a '2' config state to the ignore mismatch configs.

  *) [TS-2178] Force keep alive off if re-using client 4-tuple and server is
  not keep alive.

  *) [TS-2264] Fixed problem with EADDR_NOTAVAIL handling.

  *) [TS-2317] Read/write mutex of PluginVC may be held without release.
   Author: portl4t.cn@gmail.com

  *) [TS-2315] ESI Plugin: fetcher does not handle error gracefully.
   Author: Kit Chan

  *) [TS-2115] buffer_upload hard-codes "nobody" user/group.
   Author: Kit Chan

  *) [TS-2008] Cache control with multiple suffixes.
    Author: bettydramit <b13621367396@gmail.com>

  *) [TS-2247] ua close time in milestone may not set.
   Author: Gang Li

  *) [TS-2302] Log collation causes error logging to stop.

  *) [TS-2200] TS_HRTIME_xxx in experimental.h is invalid to use.
   Author: Yu Qing

  *) [TS-2235] url_print should NOT output "?" for empty query string.
   Author: Yu Qing

  *) [TS-2292] the version of records.config increases unexpectly.
   Author: Yu Qing

  *) [TS-2277] cluster alarm messages broadcast infinitely.
   Author: Yu Qing

  *) [TS-2276] manager memory leak in some case.
   Author: Yu Qing

  *) [TS-1638] less strict on kernel version checking in clustering.
   Author: Yu Qing

  *) [TS-2265] Remove unused log tags for prob, prcb and cgid.

  *) [TS-2301] Replace the CACHE_READY macro with CacheProcessor::IsCacheReady.

  *) [TS-2300] Remove the HIT_EVACUATE build option.

  *) [TS-2227] Allow for multiple config files for a header_rewrite plugin
   invocation (be it in remap.config or plugin.config).

  *) [TS-2230] header_rewrite should support the same hook-management that
  header_filter does for remap rules. This allows per-remap rules that
  triggers in hooks other than the remap phase.

  *) [TS-2228] Add a set-config operator for header_rewrite plugin.

  *) [TS-2226] Add a set-header operator for header_rewrite plugin.

  *) [TS-2296] improve ConfigProcessor reference counting.

  *) [ TS-2295] update statvfs usage.

  *) [TS-2139] Fix PURGE twice to remove object in cache if
   enable-interim-cache.

  *) [TS-2216] Fix cquuh log tag, which does not calculate the right
   string length.

  *) [TS-2275] fix interim cache lossing data if the server process crash.
   Author: Gang Li

  *) [TS-2291] Add remap_stats plugin to experimental.

  *) [TS-2242] Update core plugins' support_email and vendor_name for
   consistency.

  *) [TS-1988] cquuc and cquup log tags can have no values.

  *) [TS-2159] Force first log rotation at proxy.config.log.rolling_size_mb.

  *) [TS-2138] Fix the bug that restarting ats cause cache data loss if
  enable the native-aio.

  *) [TS-2197] Use HttpSM::main_handler to handle the client request stuff.

  *) [TS-2254] On ARM arch, ink_atomic_increment returns wrong value.
   Author: Yu Qing

  *) [TS-2269] regex_remap plugin does not deal with empty path's properly.
   Author: Kit Chan

  *) [TS-2270] ESI Plugin can have infinite loop while doing gunzip on
   responses. Author: Kit Chan

  *) [TS-2268] Add support for opening protocol traffic sockets through the
   traffic_manager. Added TSPluginDescriptorAccept into expiremental API.

  *) [TS-2266] Add a "make rat" Makefile target, to create a RAT report. This
   is used for verifying licensing compliance on the entire source tree.

  *) [TS-2212] Implement the <fsiz> log tag for HTTP requests. This also does
   a small refactoring of the "atoi" functions in lib/ts, such that we now
   consistently have both prototypes for all types (with and without a
   string length parameter).

  *) [TS-2261] Add config option to restore/elevate access to reading files by
   root when loading plugins.

  *) [TS-2257] Healthcheck plugin can stop watching some events.

  *) [TS-2260] Avoid flooding log when log host is down.

  *) [TS-2259] Introduce failover hosts for logging system.

  *) [TS-2256] Mem stats info is bad when enable reclaimable-freelist.

  *) [TS-2255] TS should not flood printing after log space reach the limit.

  *) [TS-2245] cancel the trigger of CacheVC in openWriteCloseDataDone.

  *) [TS-2232] log level should be change from Status to Debug.
    Author: Yu Qing <zhuangyuan@taobao.com>

  *) [TS-2201] split drainIncomingChannel two thread, one handle Broadcast
   message and other handle Reliable(TCP) request for supporing large cluster.

  *) [TS-2144] Avoid race on e.g. "traffic_server -Cclear" which would crash
   the process intermittently.

  *) [TS-2217] remove the option to turn off body factory - setting it to 0
   will result in empty responses.

  *) [TS-2209] add support for lowercasing all substitutions in regex_remap.

  *) [TS-2187] failed assert `nr == sizeof(uint64_t)` in EventNotify::signal().

  *) [TS-2206] The trafficserver RC script does not use absolute path to
   traffic_line binary.

  *) [TS-2207] CentOS5 out of tree perl module build fails.

  *) [TS-1637] Fix nodes as idle/dead if we have not heard from them in
   awhile.

  *) [TS-2185] Support to control ClusterCom::sendSharedData frequency.

  *) [TS-2195] Deprecate experimental TSHttpTxnCacheLookupSkip API.

  *) [TS-2176] Do not reset value of api_skip_cache_lookup when reading it.
    Author: Corey Cossentino <corey@omniti.com>

  *) [TS-2191] Do not reschedule http_sm when the sm_list`s lock is not
   acquired. This can lose items for the WebUI, which will be fixed in a
   separate bug.

  *) [TS-2188] Fixes to make healthcheck plugin not segfault, and parse the
   log files properly. Author: Scott Harris <scott@harrisnet.id.au>

  *) [TS-1086] Avoid edge case returning 304 to an unconditional request.
   Diagnosis and patch by Mohamad Khateeb.

  *) [TS-2168] Make RecordsConfig.cc more inline with default builds.

  *) [TS-2174] traffic_shell/traffic_line miss some stats value

  *) [TS-2173] RECD_COUNTER type is missing in setTokenValue().

  *) [TS-2165] Introduce cluster-wide logging stats.

  *) [TS-2167] Update apichecker.pl to give suggestions on additional
   deprecated APIs.

  *) [TS-2163] Remove WDA_BILLING, ACC_ALARMS etc. code and definitions.

  *) [TS-2156] Fix stats trap in different type of threads.

  *) [TS-2160] Remove ats_is_ip_nonroutable and replace it with the less
   confusing ats_is_ip_linklocal and ats_is_ip_private.

  *) [TS-2158] Properly mark an IP as non-routable for IPv4 and IPv6 link
   local addresses as well as IPv6 private addresses and IPv4 Carrier Grade
   NAT addresses from RFC 6598.

  *) [TS-2155] Make a new RAT exclude file that uses the regular expressions
   now supported. Also cleanup some of minor licensing discrepancies.

  *) [TS-2148] handle_cache_operation_on_forward_server_response ignores value
    of api_server_response_no_store.
    Author: Corey Cossentino <corey@cossentino.com>

  *) [TS-2147] Set server_share_sessions to 1 for 'internal' transactions in
   rfc5861 plugin.

  *) [TS-2114] buffer_upload plugin defines true and false
    Author: Kit Chan <chanshukit@gmail.com>

  *) [TS-2116] buffer_upload plugin is in the source tree but does not build
    Author: Kit Chan <chanshukit@gmail.com>

  *) [TS-2094] eliminate xcrun warnings at configure time

  *) [TS-2141] Inconsistent euid cause bad mgmtapi/eventapi sockets.

  *) [TS-2137] Use eventfd instread of pthread signal/wait in ATS.

  *) [TS-287] Fix transaction_active_timeout_in does not trigger on the first
   request of a Keep-Alive connection. Author: Li Gang <quehan@taobao.com>

  *) [TS-2136] Fix the first proxy.config.http.accept_no_activity_timeout is
   invalid.

  *) [TS-2089] Introduce configurable collation preproc threads.

  *) [TS-2126] Avoid unnecessary memory copy in LogHost::write()

  *)[ TS-2096] Improve SSL certificate loading error messages.

  *) [TS-2122] Enlarge the 64KB limitation of log buffer size.

  *) [TS-2061] LogFile::write_ascii_logbuffer3() can silently drop log
   entries.

  *) [TS-2123] Remove useless max_entries_per_buffer option.

Changes with Apache Traffic Server 4.0.1

  *) [TS-2161] TSHttpTxnHookAdd memory Leak.
    Author: bettydramit <b13621367396@gmail.com>

  *) [TS-2154] Lua plugin asserts traffic_server on startup.

  *) [TS-2127] Move hostdb.config to var/trafficserver, together with with the
   host.db itself.

  *) [TS-1823] remap.config line continuation support.
    Author: Jim Riggs <jim@riggs.me>

  *) [TS-1597] Document remap.config filters.
    Author: Jim Riggs <jim@riggs.me>

  *) [TS-2132, TS-2131] ${libexecdir} and $(localstatedir} chowned
   needlessly chowned to to ATS' user.
   Author: Tomasz Kuzemko <tomasz@kuzemko.net>

  *) [TS-2130] pthread_setname_np() detection fails on various platforms.

  *) [TS-2129] Check for existence of ExtUtils::MakeMaker.

  *) [TS-2128] Don't link libGeoIP.so.1 into binaries.

  *) [TS-2112] Make libloader compile by default.

  *) [TS-2111] configure check in boost falsely requires 1.50. Reducing it to
   v1.33, which is what RHEL5 ships with.

Changes with Apache Traffic Server 3.3.5

  *) [TS-2051] Fix SSL crash due to excess READ_COMPLETE events.

  *) [TS-2099] Using wrong member when setting active timeout.

  *) [TS-2102] SPDY plugin tries to setup protocol handler too early.

  *) [TS-1953] remove version checks from plugins that don't use it and
   add an example showing off the version API and partial compilation.

  *) [TS-2100] Initialize the SSL/NPN registration mutex.

  * [TS-1987, TS-2097]: Remove duplicate and unused string functions.

  *) [TS-2091] Return an error from RecGetRecordOrderAndId if the stat isn't
   registered.

  *) [TS-2081] Make the WCCP addr configuration LOCAL.

  *) [TS-2093] Check bounds on plugin stat creation.

  *) [TS-2092] Use of uninitialized member in HdrHeap.

  *) [TS-2052] ET_SSL thread spinning.
   Author: Can Selcik <cselcik at linkedin.com>

  *) [TS-2090 Make proxy.config.allocator.enable_reclaim default based on
   build instructions.

  *) [TS-2086] Remove a few more unused configs.

  *) [TS-1685] Remove TS_MICRO and fellas.

  *) [TS-1255] Add more overridable configurations, and fix bugs in how we
   deal with some of these (all "float" configs were completely broken). I
   also modified the regression tests to be less easy to fool.

  *) [TS-1976] Prevent an invalid httpport argument being passed from
   traffic_manager to traffic_server.
   Author: Thach Tran <tranngocthachs@gmail.com>

  *) [TS-2076] Removed proxy.config.http.accept_encoding_filter_enabled, which
   is obsolete.

  *) [TS-2075] Cleanup around suboptimal checks on redirects.

  *) [TS-2074] Remove proxy.config.http.server_port and
   proxy.config.http.server_other_ports remnants.

  *) [TS-2073] Set the defaults for request_hdr_max_size and
   response_hdr_max_size properly.

  *) [TS-2071] Remove proxy.config.http.session_auth_cache_keep_alive_enabled
   remnants.

  *) [TS-2072] Remove proxy.config.http.avoid_content_spoofing, and also fix a
    logical bug around the tests of when to mark the request header dirty.

  *) [TS-1993] SSL certificate chains are loaded from the wrong directory.

  *) [TS-2059] Remove dead code in EnvBlock.cc and processSpawn().

  *) [TS-2057] Removed deprecated proxy port configuration values from
   records.config.

  *) [TS-1280] Add url match token about cache control rule.

  *) [TS-2064] Fix the authproxy plugin to send an error body.

  *) [TS-2061] Avoid writing outside buffer boundaries in LogFile overfill
   buffers (for ASCII logging). Author: quehan

  *) [TS-2041] Allow environment values to override records.config settings.

  *) [TS-2044] Avoid logging client running into DENY status infinitely.
    Author: Yunkai Zhang <qiushu.zyk@taobao.com>

  *) [TS-2030] Build error with --enable-interim-cache on fedora19 x86_64.
    Author: bettydramit <b13621367396 at gmail dot com>

  *) [TS-1943] Rename mcport and rsport parameters to make them more readable.
    Author: Yunkai Zhang <qiushu.zyk@taobao.com>

  *) [TS-2046] Move perl contribs to lib/perl, and have make / make install
   build and install the modules as appropriate.

  *) [TS-954] Better calculation of blocks in volume. Bumped cache DB version.

  *) [TS-2050] Cleanup ink_config.h.in, removing unused symbols.

  *) [TS-1487] [TS-2035] Moved plugin init, added plugin lifecycle hooks,
   added delay listen for cache. Removed TS_NO_API defined/build option.

  *) [TS-2047] Schedule RamCacheCLFUSCompressor in RamCacheCLFUS::init instead
   of immediately after instantiation.

  *) [TS-2042] Remove remnants of unused vingid command line option.

  *) [TS-1898] improve cluster read/write performance.

  *) [TS-2036] Enable mgmt update (traffic_line -x) for plugins.

  *) [TS-2037] Fix start-stop-daemon typo in debian init script.

  *) [TS-2003] Fix RAM cache stats when using cluster. Author: Yunkai Zhang.

  *) [TS-1820] Cleanup UNUSED / INK_UNUSED / RELEASE_UNUSED. This also removes
   the entire mgmt/tools directory, and relevant support in traffic_shell for
   managing network interfaces.

  *) [TS-2033] Remove EncryptToFile() and mgmt API.

  *) [TS-2027] Initialize the ConnectionCount`s mutex.

  *) [TS-1997] Remove TSHttpTxnCachedUrlSet() API.

  *) [TS-2028] Config parse problems in healthchecks plugin.

  *) [TS-1966] Add new configuration option to control ProxyAllocator size.

  *) [TS-1151] cop may crash due to uninitialized pointer val

  *) [TS-2013] Install the tspush script.

  *) [TS-2012] Use standard C++11 containers in logstats.

  *) [TS-1999] Merge in the healthcheck plugin from GoDaddy.

  *) [TS-1998] Make stats-over-http support configurable URL path.

  *) [TS-1990] Fix core at CacheContinuation::handleDisposeEvent().

  *) [TS-2010] Build fixes for OS X 10.9 and Xcode 5.

  *) [TS-1957] fix If CacheContinuation timeout, timeout Event will be loop

  *) [TS-2007] Add TSNetConnectTransparent API for transparent net connections

  *) [TS-1991] clang complaint: logical not is only applied to the left hand
   side of this comparison.

  *) [TS-1958] Web UI can crash doing a regex lookup.

  *) [TS-1994] Increase default RAM cache size by a magnitude.

  *) [TS-1978] Segfault when trying to set an error from (remap) plugin. This
   also fixes a bug where the "default" template was not loaded upon startup.

  *) [TS-1977] Build issues on OSX / clang related to stacksize changes.

  *) [TS-1972] TSNetAcceptNamedProtocol does not receive connections.

  *) [TS-1970] Using ssl_ca_name= in ssl_multicert.config fails.

  *) [TS-1946] Reduce the verbosity of SSL handshake errors.

  *) [TS-1971] Switch jtest over to standard argument parsing.

  *) [TS-1786] Only enable -Werror for development builds.

  *) [TS-1960] Decouple stacksize config from core, this fixes regressions.

  *) [TS-1959] traffic_manager not honoring some records.config settings
   necessary for e.g. logging.

  *) [TS-745] support interim caching in storage to enable, use
   '--enable-interim-cache' configure option.

  *) [TS-1968] Promote header_rewrite plugin from experimental

  *) [TS-1961] Add tsxs support for querying installation variables.

  *) [TS-1886] Allow users to attempt gcc builds on Mac OS X.

  *) [TS-1934] Make geoip_acl experimental plugin compile.

  *) [TS-1948] Remove obsolete TSPluginLicenseRequired and plugin.db.

  *) [TS-1942] Remove username.cache configs, they are obsolete and long gone.

  *) [TS-1496] Enable per transaction flow control.

  *) [TS-1684] Added more ProxyAllocators for faster and local memory
   allocation.  Have seen a doubling in performance depending on the benchmark.
   Details in the ticket.

  *) [TS-1962] Don't add POST server connections to the shared pool unless POST
   keep-alive option is on

Changes with Apache Traffic Server 3.3.4

  *) [TS-1940] HostDB gets reinitialized on startup.

  *) [TS-1941] Make Linux native-AIO build cleanly.

  *) [TS-1938] Remove unnecessary thread_id() wrapper in reclaimable freelist.
    Author: Yunkai Zhang <qiushu.zyk@taobao.com>

Changes with Apache Traffic Server 3.3.3 (never released)

  *) [TS-1936] Make traffic_logstats honor the log-directory as intended.

  *) [TS-1937] Prevent assert on SSL forward proxy connect.

  *) [TS-1907] Using the "ipv6" option for port configuration cancels the
   "ssl" option.

  *) [TS-1927] Make ats_base64_decode able to handle the URL variant

  *) [TS-1207] Move cacheurl plugin out of experimental

  *) [TS-1857] On CentOS the Lua plugin is built whether Lua is found or not.

  *) [TS-1492]  Prevent net-throttling from locking out the health checks
   from traffic_cop.

  *) [TS-1827] Make combo_handler be enabled via remap.config, and
   various other cleanup fixes. Author: Conan Wang and Leif.

  *) [TS-1932] Use a more modern tar format so asf-dist can handle
   file paths longer that 99 bytes

  *) [TS-1891] Add double-free checking for reclaimable freelist
    Author: Yunkai Zhang <qiushu.zyk@taobao.com>

  *) [TS-1926] Require Lua v5.1, by checking for lua_getfenv(). This is
   necessary since we are incompatible with Lua v5.2 (for now).

  *) [TS-1921] Fix reclaimable freelist getting stuck in infinite loop.
    Author: Yunkai Zhang <qiushu.zyk@taobao.com>

  *) [TS-1824] TSHttpTxnPushedRespHdrBytesGet() takes an int argument in the
   implementation, whereas the prototype does not have this.

  *) [TS-1928] False warning when setting log rotation size to exactly 10.

  *) [TS-1812] Remove obsolete syslog_thr_init calls.

  *) [TS-1825] TSPortDescriptorAccept does not use it's argument.

  *) [TS-1925] Remove obsolete MMH hash API.

  *) [TS-1924] Metalink: Add plugin documentation.
    Author: Jack Bates <jack@nottheoilrig.com>

  *) [TS-1913] Fix memory issue caused by resolve_logfield_string()
    Author: Yunkai Zhang <qiushu.zyk@taobao.com>

  *) [TS-1915]  header_rewrite uses TSUrlHostSet() when using set-destination
   PATH. Author: Nick Berry.

  *) [TS-1941] Configured socket buffer sizes are not applied.

  *) [TS-1912] SSL hangs after origin handshake.

  *) [TS-1911] Enforce MIOBufferAccessor accessor API.

  *) [TS-1909] Remove duplicate listen socket conditioning.

  *) [TS-1896] Cleanup of unused defines, sometimes duplicated.

  *) [TS-374] Reduce lock contention in HostDB.

  *) [TS-1728] Assign storage entries to volumes
     Author: Justin Laue <justin@fp-x.com>

  *) [TS-1899] strtod() does not honor Hex strings on Solaris.

  *) [TS-1894] madvise() not found on Solaris. And some cleanup.

  *) [TS-1765] Make jtest build more like the rest of the code.

  *) [TS-1892] Move msync APIs to ink_memory.h.

  *) [TS-1890] Authproxy plugin caching and reliability fixes.

  *) [TS-1868] TSREMAP_*_STOP does not stop remap plugin evaluation chain.

  *) [TS-1889] Refactor remap plugin request URL handling.

  *) [TS-1887] Make diagnostic location logging more succinct.

  *) [TS-1884] Remove deprecated IPv4-only NetProcessor API.

  *) [TS-1444] [TS-1881] URL lookup with regex through the web interface was broken.

  *) [TS-1880] Use pthread_setname_np to set the thread name on multiple platforms.

  *) [TS-1879] Make the Ptr<> conversion constructor explicit.

  *) [TS-1768] Prefer AC_SEARCH_LIBS to AC_CHECK_LIB to avoid unnecessary linking.

  *) [TS-1877] Fix multiple Lua remap plugin instance creation.

  *) [TS-1770] Unable to create remap rule for SSL sites when accessed as a
   forward proxy. Author: Mark Harrison.

  *) [TS-1867] The combo_handler plugin crashes when receiving non-200 responses.
    Author: Conan Wang <conanmind@gmail.com>

  *) [TS-1838] Improve configure.ac to recognize compiler setup better.

  *) [TS-1865] Support DESTDIR in tsxs.

  *) [TS-1864] Illumos / OmniOS needs -m64 with gcc to compile properly on
   64-bit platforms. We also only support ATS on 64-bit Illumos.

  *) [TS-1811] Make the HostDB sizes variable on the SRV enabled config.
   This restores compatibility with HostDB's prior to v3.3.1.

  *) [TS-1843] Detect and link libhwloc on Ubuntu.

  *) [TS-1858] Fix redefinition of timersub on Solaris.

  *) [TS-1861] Build fails with reclaimable freelist enabled.

  *) [TS-1860] cacheurl doesn't compile on platforms with pcre/pcre.h
   (e.g. solaris).

  *) [TS-1729] Fix channel_stats to compile on various Unixen. Note that this
   is still IPV4 only.

  *) [TS-1839] We fail "make test" on some platforms, due to install
   directory missing.

  *) [TS-1856] Replace SIZE() macro with COUNTOF() and countof().

  *) [TS-1853] Fix formatting in logstats to be consistenly 2 decimals.

  *) [TS-1852] Fix missing AC_PROG_SED on CentOS 5.9.

  *) [TS-1717] Fix the static build as much as possible.

  *) [TS-1851] Turn HostDBInfo back into a POD type.

  *) [TS-1850] Improve SSL certificate error reporting.

  *) [TS-1848] Fix MIMEHdr::field_value_set_int64() wrapper.
   Author: Yunkai Zhang <qiushu.zyk@taobao.com>

  *) [TS-986] experimental.h has a dependency on netinet/net.h (for
  struct in_addr).

  *) [TS-1794 Replace all usage of ts_debug_assert() with ts_assert().

  *) [TS-1834] Force absolute paths to fix logstats unit tests.

  *) [TS-1817] Use the libaio interface to the Linux AIO system calls.

  *) [TS-1721] Integrate tstop into the autotools build.

  *) [TS-1706] Fix documentation for Config::Records.pm.

  *) [TS-1218] Make traffic_cop tracing configureable at build time.

  *) [TS-1846] Remove TestHook.

  *) [TS-1844] Efficient HostDB file allocation.

  *) [TS-1586] Fix the SPDY plugin build under clang on Linux.

  *) [TS-1053] Make combo_handler compiler. Author: Conan Wang.

  *) [TS-1792] Cleanup extremely verbvose debug text on Vary headers.

  *) [TS-1819] Guarantee hwloc initialization.

  *) [TS-1830] Add getpagesize library function.

  *) [TS-1801] Remove proxy.config.net.throttle_enabled, it's an artifact
   of a debugging case, and should not have been included upstream.

  *) [TS-1829] Values exceed capacity of 'long' data type on 32-bit

  *) [TS-1755] Add basic logstats tests.

  *) TS-1184 Additional whitespace in proxy.config.admin.user_id value results
   in error.

  *) [TS-1662] Remove remaining use of register storage class.

  *) [TS-846] Eliminate proxy.config.remap.use_remap_processor.

  *) [TS-1802] Remove proxy.config.net.accept_throttle.

  *) [TS-1752] Change type of "len" in jtest to off_t, for better
  compiler compliance.

  *) [TS-1826] Remove DumpStats/http_dump dead code.

Changes with Apache Traffic Server 3.3.2

  *) [TS-621] Allow caching of empty docs (currently only if a header
   Content-Length: 0 is in the response). New config option is named
   proxy.config.http.cache.allow_empty_doc, and is disabled by default.

  *) [TS-1778] Remove vestigal extensions.config support.

  *) [TS-1806] bogus buffer sizing in CfgContextUtils.cc.

  *) [TS-1805] Fix stats ExpressionEval in stats xml.
   Author: Yunkai Zhang

  *) [TS-1783] Eliminate the wpad.dat configuration option (it's unused).

  *) [TS-1787] Eliminate old ink_time code (was probably only used by the
   now obsolete Web UI). This fixes compiling with gcc 4.8 as well.

  *) [TS-1067] Remove unused config (and code) for bandwidth management.

  *) [TS-1736] Fatal() terminates process without a backtrace.
    Author: Yunkai Zhang <yunkai.me@gmail.com>

  *) [TS-1791] remove m_mutex acquire&release to avoid deadlock in
   ~LogBufferList(). Author: Gang Li <quehan@taobao.com>.

  *) [TS-1713] SRV support refine. Now the srv option is able to enable, with
   no crash. Be care, the hostdb.storage_size or ostdb.size need check.

  *) [TS-1632] In addition to the changes from TS-1674, also add
   some safety measures assuring that the stats sums don't go.
   negative. Author: Yakov Kopel.

  *) [TS-1789] Script to compare RecordsConfig.cc default values with
   records.config.default.in: Author: Mark Harrison.

  *) [TS-1631] Mgmt API to clear stats does not actually clear it.
   Author: Yakov Kopel.

  *) [TS-1772] Remove multiple TS_INLINE defines.

  *) [TS-1771] add http_load to the build.

  *) [TS-1766] integrate AIO test into the autotools test suite.

  *) [TS-1753] Add remap support to the cacheurl plugin.
   Author: Mark Harrison <mark@mivok.net>

  *) [TS-1790] authproxy should accept 2xx as authorization success.

  *) [TS-1780] Fix Debuntu build with hardening flags.

  *) [TS-1623, TS-1625] Fixes for logging where the host name was not handled
    correctly because it was not in the URL.

  *) [TS-1754] Remove unecessary wWarnings from stats evaluation.
   Author: Yunkai Zhang.

  *) [TS-1169] Eliminate bogus asserts. Credits to Conan Wang.

  *) [TS-1764] Unify MAX/MIN definitions (in ink_defs.h). Also clean
   up the checks of gcc prior to v3.x (which we no longer support).

  *) [TS-1724] Add tool to compare records.config files to contrib.
   Author: Mark Harrison <mark@mivok.net>

  *) [TS-1566] dynamic update for string vars does not work.
   Author: Aidan McGurn <aidan.mcgurn@openwave.com>

  *) [TS-1708] Using tr-pass port option causes requests with large headers to
   hang.

  *) [TS-1734] Remove dead code that invokes missing vmap_config tool.
   Author: John Kew <john.v.kew.ii@gmail.com>

  *) [TS-1660] Host field should not has c style terminator.

  *) [TS-1627] Support requests with payload.

  *) [TS-1763] Add Arch Linux config.layout.
   Author: Galen Sampson <galen.sampson@gmail.com>

  *) [TS-1749] Stats cluster values among nodes are not consistent.
   Author: Yunkai Zhang <qiushu.zyk@taobao.com>

  *) [TS-1761] Improve scheduling and configuration around HostDB disk sync.

  *) [TS-1758] Remove unused overviewPage aggregation functions.
   Author: Yunkai Zhang.

  *) [TS-1748] Add jtest to the build.

  *) [TS-1730] Supporting First Byte Flush for ESI plugin.
   Author: Shu Kit Chan <chanshukit@gmail.com>

  *) [TS-1745] Fix typos.
   Author: Benjamin Kerensa <bkerensa@ubuntu.com>

  *) [TS-1671] Remove AlarmListable from overviewRecord.
   Author: Yunkai Zhang <qiushu.zyk@taobao.com>

  *) [TS-1740] Improve precision of stats values.
   Author: Yunkai Zhang <qiushu.zyk@taobao.com>

  *) [TS-1742] Freelists to use 64bit version w/ Double Word Compare and Swap.

  *) [TS-1356] Ability to set thread affinity with multiple modes.

Changes with Apache Traffic Server 3.3.1

  *) [TS-1743] Implement our own hash mechanism for traffic_logstats, since
   C++11 does not provide a sensical hash<const char*>.

  *) [TS-1628] In validate_unmapped_url(), pristine_url can be invalid().

  *) [TS-1714] Fix some build problems for gcc v4.8.

  *) [TS-1626] Remove WUTS proxy code.
   Author: Uri Shachar <ushachar@hotmail.com>

  *) [TS-1741] Add plugins examples to the build.

  *) [TS-1058] Add TSHttpTxnCloseAfterResponse experimental API.
   Author: Yakov Kopel <ykopel@websense.com>

  *) [TS-1733] Retool tsxs so that it can compile multiple source files
   Author: Dale Ghent <daleg@omniti.com>

  *) [TS-1738] proxy.cluster.cache_total_hits_mem is missing in RecordsConfig.
   Author: Yunkai Zhang <qiushu.zyk@taobao.com>

  *) [TS-1739] Fix TODO within varFloatFromName()
   Author: Yunkai Zhang <qiushu.zyk@taobao.com>

  *) [TS-1559] Server side termination not handled properly when a PluginVC
   Protocol Plugin is used. Author: Yossi Gottlieb.

  *) [TS-1300] Document the usage of TSUrlStringGet() and derivatives.
   Author: Uri Shachar.

  *) [TS-1645] increase the file stat resolution on config files
   Author: Yakov Kopel <ykopel@websense.com>

  *) [TS-1557] update ua_begin_write
   Author: Aidan McGurn <aidan.mcgurn@openwave.com>

  *) [TS-1320] Reading from SSL origin can starve sending data to client.

  *) [TS-1155] POST requests that are chunked encoding hang when going
  forward to origin over SSL

  *) [TS-1634] reimplement Lua state management to support reload

  *) [TS-1716] authproxy fails to reserve an argument index in global mode

  *) [TS-1710] esi plugin enhancement such as support forward proxy
   Author: Yu Qing <zhuangyuan@taobao.com>

  *) [TS-1707] fix FreeBSD store blocks calculation
   Thanks to Ben Aitchison <ben at meh dot net dot nz>

  *) [TS-1704] null pointer dereference in dns_result
   Author: Li-Wen Hsu <lwhsu@lwhsu.org>

  *) [TS-1701] segv if header_rewrite is configured with the InkAPI and uses
   PATH or QUERY conditions. Author: John Kew.

  *) [TS-1700] disable static libraries by default.

  *) [TS-1653] prevent the crash that retry dns lookup after timeout.

  *) [TS-1006] memory management, cut down memory usage.
   Author: Yunkai Zhang <qiushu.zyk@taobao.com>

  *) [TS-1678] Simplify register_record
   Author: Yunkai Zhang <qiushu.zyk@taobao.com>

  *) [TS-1252] stats summary in cluster not working
   Author: Yunkai Zhang <qiushu.zyk@taobao.com>

  *) [TS-1679] channel_stats plugin: count 5xx response and clean up code.
   Author: Conan Wang

  *) [TS-1676] FetchSM (TSFetchUrl) cannot handle POST bodies > 32kb.

  *) [TS-1675] Adding API method TSHttpTxnClientIncomingPortSet.

  *) [TS-1674] TSStatIntDecrement is broken: the logic is flawed.

  *) [TS-1673] Remap with recv port is using the wrong port.

  *) [TS-1672] Emergency throttling can continue forever.

  *) [TS-1650] Inactivity cop should use TRY_LOCK instead of LOCK to avoid
   deadlock.

  *) [TS-1649] Don't use ink_bind if we're not specifying a local port.

  *) [TS-1667] remove unused enum TSIOBufferDataFlags.

  *) [TS-1538] SSL accept performance regression.

  *) [TS-977] RecCore usage cleanup.

  *) [TS-1574] [TS-1577] when read_from_writer, we should not do range
   acceleration. Range request can invalidate cached copy if the server
   reponse is 304.

  *) [TS-1609] Traffic Cop doesn't wait() for its children.

  *) [TS-1601] HttpServerSession::release don't close ServerSession if
   ServerSessionPool locking contention.

  *) [TS-1643] Post requests with no Content-Length header sends default error
   response.

  *) [TS-1640] SSL certificate reconfiguration only works once.

  *) [TS-1246] trafficserver script error message (in ubuntu).

  *) [TS-1630] Add Lua API for TSHttpTxnCacheLookupStatusGet.

  *) [TS-1423] Added option to do transparent passthrough on connections that
   are not valid HTTP.

  *) [TS-1599] set OpenSSL allocator with CRYPTO_set_mem_functions.

  *) [TS-1624] Remove JEMALLOC_P use, it seems to have been deprecated.

  *) [TS-1500] let ssl_multicert.config specify sslcert per port

  *) [TS-1621] Adopt ConfigUpdateHandler pattern.
   Author: Ethan Lai <yzlai@yahoo.com>

  *) [TS-1619] simplify ConfigurationProcessor reconfiguration pattern.

  *) [TS-1617] Build cacheurl when experimental plugins are enabled.
   Author: Aron Xu.

  *) [TS-1307] [TS-1422] Changed HostDB handling of IPv4 and IPv6. Address
   resolution preferences can be configured globally and per HTTP proxy
   port. Transparent connections can now fail over even if
   use_client_target_addr is set.

  *) [TS-1616] authorization proxy plugin.

  *) [TS-1615] Some spelling errors in source code. Author: Aron Xu.

  *) [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.
