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The Apache Tomcat Connectors - Miscellaneous Documentation


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This is the Changelog for Apache Tomcat Connectors. This changelog does not contain all updates and fixes to the Tomcat connectors (yet). It should contain fixes made only after November 10th 2004, when the new documentation project for JK was started.

Changes between 1.2.45 and 1.2.46

fix 62751: Apache: Fix regression in 1.2.44 which resulted in socket_connect_timeout to be interpreted in units of seconds instead of milliseconds on platforms that provide poll(). (rjung)
Changes between 1.2.44 and 1.2.45

fix 62689: Correct regression in 1.2.44 that broke request handling for OPTIONS * requests. (rjung)
update Apache: Update the documentation to note additional limitations of the JkAutoAlias directive. (markt)
code Common: Optimize path parameter handling. (rjung)
fix Improve path parameter parsing so that the session ID specified by the session_path worker property for load-balanced workers can be extracted from a path parameter in any segment of the URI, rather than only from the final segment. (markt)
fix Apache: Improve path parameter handling so that JkStripSession can remove session IDs that are specified on path parameters in any segment of the URI rather than only the final segment. (markt)
fix IIS: Improve path parameter handling so that strip_session can remove session IDs that are specified on path parameters in any segment of the URI rather than only the final segment. (markt)
Changes between 1.2.43 and 1.2.44

update Remove the Novell Netware make files and Netware specific source code since there has not been a supported version of Netware available for over five years. (markt)
update 57946: Apache: Update the documentation to use httpd 2.4.x style access control directives. (markt)
fix 58287: Common: Use Local, rather than Global, mutexs on Windows to better support multi-user environments. (markt)
fix 59897: Apache: Use poll rather than select to avoid the limitations of select triggering an httpd crash. Patch provided by Koen Wilde. (markt)
fix 60745: ISAPI: Remove the check that rejects requests that contain path segments that match WEB-INF or META-INF as it duplicates a check that Tomcat performs and, because ISAPI does not have visibility of the current context path, it is impossible to implement this check without valid requests being rejected. (markt)
add Clarify the behvaiour of lb workers when all ajp13 workers fail with particular reference to the role of the retries attribute. (markt)
add 62408: Add the new load-balancer worker property lb_retries to improve the control over the number of retries. Based on a patch provided by Frederik Nosi. (markt)
fix Refactor normalisation of request URIs to a common location and align the normalisation implementation for mod_jk with that implemented by Tomcat. (markt)
add Add a note to the documentation that the CollapseSlashes options are now effectively hard-coded to CollpaseSlashesAll due to the changes made to align normalization with that implemented in Tomcat. (markt)
update Update PCRE bundled with the ISAPI redirector to 8.42. (rjung)
update Update config.guess and config.sub from https://git.savannah.gnu.org/git/config.git. (rjung)
Changes between 1.2.42 and 1.2.43

fix 61733: LB: Propagate load factor changes applied by the status worker to a load balancer sub worker correctly to all processes. Based on a patch provided by Jonathan Oddy. (rjung)
fix ISAPI: Align the make files for 32-bit and 64-bit builds. (markt)
update Update config.guess and config.sub from http://git.savannah.gnu.org/cgit/config.git. (rjung)
update Update PCRE bundled with the ISAPI redirector to 8.41. (rjung)
fix Update the ISAPI redirector installation documentation to reflect the currently supported versions of Windows. (markt)
fix Align the normalization performed by the ISAPI redirector with that implemented by Tomcat. (markt)
Changes between 1.2.41 and 1.2.42

fix Status: Fix displayed number of bytes read from and written to the backend when an AJP worker is used without a load balancer worker. (rjung)
fix Apache: Don't try to read remaining request body parts during clean up if reading the request body from the client already failed during earlier processing phases. (rjung)
fix 57485: Apache: Propagate errors reading the request body from the client to mod_jk so Tomcat sees an error rather than a truncated body. (markt)
fix 57836: ISAPI: Empty REMOTE_USER should not be translated to "". (rjung)
fix 58249: Add a note the the documentation that max_packet_size will be aligned to the next multiple of 1024 if a value is specified that is not a multiple of 1024. (markt)
update 58309: ISAPI: Update bundled pcre from version 5.0 to 8.38. (rjung)
fix 58286: Fix crash in mod_jk and in the ISAPI Redirector. The crash only happens on Windows when retrieving the jk-status for the HTML format (which is the default format). This regression was introduced by the fix to 54177. (rjung)
fix 58285: Don't use GCC atomics on platforms, for which GCC doesn't provide an atomics implementation. This regression was introduced by the fix to 44454 and 56703. (rjung)
fix 58425: Fix regression in 1.2.41 that prevented AJP 1.2 workers from initialising. Note that the AJP 1.2 protocol is deprecated. Patch provided by yagisita. (markt)
fix 58504: If a background thread is used to perform worker maintenance, ensure that maintenance runs are not skipped. Patch provided by Hiroto Shimizu. (markt)
fix 58608: ISAPI: Add a new registry option "flush_packets" that allows the flushing behaviour of IIS7+ to be controlled. The default is not to flush. Setting the option to "true" with cause IIS to write data to the client as each AJP packet is received. (markt)
fix 58813: ISAPI: Correctly release a mutex allowing the plugin to complete initialization. Prior to this fix, the incomplete initialization was causing a hang on shutdown. Patch provided by Matthew Reiter. (markt)
fix 58895: Correct an off-by-one error in the log messages for the number of attempts made to communicate with the backend server. Patch provided by Hiroto Shimizu. (markt)
fix 59164: Fix crash on first connection if a host name is specified for the worker that cannot be resolved to an IP address. (markt)
fix 59184: HTTPD: Avoid segmentation fault if mod_jk is configured with an invalid value for JkShmFile. This causes the server startup to fail. (markt)
fix Minor code clean-up and optimization. (markt)
Changes between 1.2.40 and 1.2.41

fix AJP, LB: Reduce lock contention during maintenance function. This was observable when using a big number of AJP13 and LB workers, especially in combination with the Apache httpd prefork MPM. (rjung)
fix 57060: Allow building from outside of source tree. Patch contributed by Petr Sumbera. (rjung)
fix 56703: Status: Fix inflated counter for current number of backend connections especially when a connection timeout occurred on the backend. (rjung)
fix 56661: Fix Servlet API getLocalAddr(). Works for Tomcat 6.0.42, 7.0.55 and 8.0.11 and Apache and ISAPI plugins. (rjung)
update Status: Log old and new values when changing worker attributes. (rjung)
fix 56667: Status: Fix log message when changing activation state of all members. (rjung)
fix 56565: Fix IPV6 address resolve on non-dual network stacks. (mturk)
fix 50511: Reduce log level for "OPTIONS *" requests from warning to debug. (rjung)
fix Apache: Copy log notes instead of using references to prevent access to memory from closed pool. (rjung)
add Add option to control handling of multiple adjacent slashes in mount and unmount. New default is collapsing the slashes only in unmount. Configuration is done via new JkOption for Apache ("CollapseSlashesAll", "CollapseSlashesNone" or "CollapseSlashesUnmount") and via property "collapse_slashes" for IIS (values "all", "none", "unmount"). This is the fix for CVE-2014-8111. (rjung)
add Add more checks for shared memory allocation. (rjung)
add 56869: Status: Add maximum number of open backend connections to status worker. Patch contributed by Martin Knoblauch. (rjung)
add 56770: AJP: Add worker name to all log messages. Patch contributed by Martin Knoblauch. (rjung)
fix 50186: Docs: Clarify relation between "connection_pool_timeout" and "keepAliveTimeout" or "connectionTimeout" in the Tomcat AJP connector configuration. (rjung)
fix 52334: LB: Calculate worker recovery time based on last recovery attempt time instead of original error time after the first recovery attempt. (rjung)
fix 54596 part 1: IIS: Fix missing last character when parsing relative file names with no ".." directory components from configuration. (rjung)
fix 54596 part 2: IIS: Fix using relative file names in config with ".." path segments that go up the directory hierarchy higher than the starting point of the relative file name. (rjung)
fix Status: Add logging if status worker output was dropped due to insufficient buffer size. (rjung)
fix Reduce log buffer from 8KB to 1KB. Add logging in case of failed logging and add trailing "..." to lines which were likely truncated. (rjung)
update Replace fixed allocation of 32 entries for fail_on_status by dynamic allocation. (rjung)
add Enforce implementation restriction on maximal length "60" of worker attributes "name", "host", "route", "domain", "redirect", "session_cookie", "session_path" and "set_session_cookie". Checks were added to configuration file processing and configuration updates via the status worker. (rjung)
add 52483: Apache: Add debug logging for result of JkOptions configuration processing. (rjung)
fix 54177: Status: Use numeric time stamps instead of textual ones to avoid non-well-formed XML output. Textual timestamps are formatted according to locale settings and reencoding them to UTF-8 would be cumbersome. (rjung)
fix 56618: Status: Use percent decoding when reading query string parameters. For example this fixes editing IPv6 addresses via the status worker if the client encodes ":" as "%3A". Patch contributed by Christopher Schultz. (rjung)
fix 56452: Fix crash in debug logging for IPv6 adresses. Patch contributed by Christopher Schultz. (rjung)
fix 34526: Apache: Improve compatibility with mod_deflate request body inflation. An automatic detection of mod_deflate inflation is not implemented. Use the new Apache environment variable JK_IGNORE_CL instead, to let mod_jk ignore an existing Content-Length request header. (rjung)
update 44454: LB: Add warning to docs about problems with "busyness" load balancing method. (rjung)
fix 44454: Improve busy counter by using atomics. (rjung)
fix 56703: Status: Improve connected counter. Use atomics and for mod_jk (Apache) currectly count down connections closed by child processes that are stopped. (rjung)
fix 44571: Ensure that we return with status 503 if we can not get and endpoint for a worker. (rjung)
fix Apache: Improve log handling during graceful or normal restart. (rjung)
fix Don't update last access time of worker connections during optional checking of idle connections using CPing. Updating the time stamp breaks closing idle connections. (rjung)
fix Adjust linger parameters used during connection shutdown. (rjung)
fix Fix annoying redefine warnings for the autoconf PACKAGE defines during configure based builds. (rjung)
fix Status: Use multi-line table headers and fix invalid xml output. (rjung)
fix 44571: Implement an optional limit on concurrent requests allowed for a worker (attribute "busy_limit"). Original patch contributed by zealot0630 at gmail dot com. (rjung)
fix Correct log message "all endpoints are disconnected" to "no usable connection found, will create a new one". Tone done from info log level to debug for the common case. (rjung)
add 57536: AJP: Allow to configure connection source address. This should only be used on multi-homed hosts. The feature is experimental. (rjung)
add 57540: AJP: Forward name of SSL protocol used for handling the request (SSLv3, TLSv1, TLSv1.1, TLSv1.2). (rjung)
Changes between 1.2.39 and 1.2.40

fix Fix forwarding of chunked requests, which is broken in version 1.2.39. (rjung)
fix 56352: Fix regression in memory release. (mturk)
fix Fix status worker display of worker IP address after name or port was changed. (rjung)
update 56297: Improve key hash function. Copied from APR. (rjung)
fix 55683: Remove quotes from quoted session cookies. (rjung)
fix 53542: ISAPI: Fix grammar in 503 error page. (rjung)
fix 55696: Crash on Mac OS X 10.9 during config parsing. (rjung)
Changes between 1.2.37 and 1.2.39

update Deprecate nt_service from Apache Tomcat Connectors. (mturk)
fix 56133: Fix possible crash when a request fails during request body transfer to the back end and reply_timeout was set. Patch contributed by Hiroto Shimizu. (rjung)
fix Fix status worker not updating parameters for all members. (mturk)
fix 55853: HTTPD: Use the correct API for setting Content-Length. Patch contributed by areese yahoo-inc.com. (rjung)
add Add IPV6 support for connection to webserver. New directive prefer_ipv6 has been added to control the hostname resolution and preserve backward compatibility. (mturk)
add Add --disable-sock-cloexec to configure to disable use of SOCK_CLOEXEC (using FD_CLOEXEC + fnctl instead) so built modules will work with Linux kernels prior to 2.6.27. (timw)
update Clean up config file parsing. Worker names are now restricted to 60 bytes. (rjung)
update Allow to set a stickyness cookie in case a web framework breaks Tomcat's adding of the routing ID to the end of the JSESSIONID cookie. (rjung)
update Use max_packet_size also for request body forwarding. (rjung)
update Apache 2.4: By default forward logical client address as provided by mod_remoteip. When setting JkOptions ForwardPhysicalAddress mod_jk will instead forward the physical peer address. (rjung)
update Minor documentation improvements. (rjung)
Changes between 1.2.36 and 1.2.37

fix Fix regression which can crash webserver in case worker is defined both as member of load balancer and as standalone worker. (mturk)
fix Fix core if debug log level is specified and there is no session identifier present. (mturk)
Changes between 1.2.35 and 1.2.36

fix Use named shared memory objects so that we preserve runtime configured data instead of resetting on each child creation. (mturk)
fix Fix dead-lock caused by not releasing mutex on close. (mturk)
fix Fix compilation of mod_jk for HTTPD 1.3. (rjung)
fix 46893: HTTPD 1.3: Apply fix to HTTPD 1.3. It was fixed for HTTPD 2.x already in version 1.2.30. (rjung)
update HTTPD 1.3: Allow to set path parameter used when doing JkStripSession. This was available for HTTPD 2.x already since mod_jk 1.2.27. (rjung)
Changes between 1.2.33 and 1.2.35

fix HTTPD: Fix crash on unknown worker names. (mturk)
fix IIS: Fix crash on worker process recycle. (mturk)
fix 52659: IIS: Fix shared memory corruption. (mturk)
fix 52921: HTTPD: Fix crash in uri mapping. (mturk)
Changes between 1.2.32 and 1.2.33

fix 52793: AJP: Fix default value of forwarded worker activation state. Contributed by Yoshihito Fukuyama. (rjung)
fix HTTPD: Improve support for HTTPD 2.4 by using client_* instead of remote_* variables. (rjung)
fix 52564: Fix building with format checking gcc security hardening cflags. Contributed by Tony Mancill. (rjung)
fix 52567: Balancer member in recovery state can switch back into error state if it is idle. (rjung)
update Log error if unable to load URI workermap file, and improve logging of unreadable worker files on IIS. (timw)
update Remove deprecated JNI worker and build dependency on Java SDK. (mturk)
fix 51253: Forward WWW-Authenticate header when using server generated error pages (rjung, mturk).
update 46406: IIS: Support relative paths in configuration. The paths are presumed to be relative from isapi_redirect.dll. (mturk)
fix 50233: Do not use hard limit on uri size (mturk).
update IIS: Use Windows Server 2003 SP1, Windows XP SP2 as minimal version supported. (mturk)
fix 47038: Fix compiler warning when using --enable-flock for configure. (rjung)
add 51326: URI Map: Add "session_cookie" and "session_path" rule extensions. Contributed by Eiji Takahashi. (rjung)
update 51333: IIS: Document configuration requirement for 64 Bit environment. (rjung)
add 51743: HTTPD: Support rule extensions when defining the request worker with an environment variable (e.g. JK_WORKER_NAME). (rjung)
fix 51769: IIS: Allow URIs which contain "META-INF" or "WEB-INF" as long as they are not path components of the URI. (rjung)
fix 52056: HTTPD: JK request log does not always log correct response status. Fixed by refactoring JK request log to use the standard request log hook. (rjung)
add HTTPD: Allow to choose a sticky worker using the environment variable JK_ROUTE. This can be used if sessions and routes are send with the request in a non-standard way. (rjung)
add URI Map: Add "sticky_ignore" extension attributes to uri worker map. It allows to disable stickyness for individual mounts. (rjung)
add HTTPD: Allow dynamic disabling of stickyness using the environment variable JK_STICKY_IGNORE. This can be useful to break cookie stickyness for non-sticky requests like login forms. (rjung)
add LB: New balancing method "Next" to distribute sessions in a round-robin way. (rjung)
add LB: Add counter for created sessions to status worker and HTTPD notes. It actually counts the number of requests that do not carry a session id. (rjung)
add URI Map: Add "stateless" extension attributes to uri worker map. This can improve session load balancing. (rjung)
add HTTPD: Allow dynamic switching of requests to "stateless" using the environment variable JK_STATELESS. (rjung)
update AJP: Improve logging when request does not fit into an AJP packet. (rjung)
Changes between 1.2.31 and 1.2.32

fix 51417: Fix worker busy detection by querying the worker endpoint. Abandoned connections can leave a worker in busy state without decrementing busy counter. (mturk)
fix 50339: Fix whitespace trimming when parsing attribute lists. (rjung)
fix 41263: Support Servlet API getRemotePort(). Works for Tomcat 5.5.28, 6.0.20 and 7.0.0 and Apache and ISAPI plugins. (rjung)
fix 41923: AJP: Close AJP connection to Tomcat on client write error when recovery_options 4 is specified, aborting the response write on the Tomcat side. (timw)
update AJP: Cap the lingering bytes that will be read when shutting down an AJP socket at 32k to prevent CPU spikes in the web server when a client aborts on a large response body. Also reduce total linger time to 2s. (timw)
fix 50839: AJP: Fix 30sec CPU spike due to incorrect counting of lingering bytes causing a busy loop when a client aborts connection during a response write. Fixes regression in 1.2.31. (timw)
add LB: Forward worker activation state as request attribute "JK_LB_ACTIVATION". Possible values are "ACT" (active), "DIS" (disabled) and "STP" (stopped). (rjung)
fix HTTPD: Forward WWW-Authenticate from backend when status is 401 and server generated error pages are used. (rjung)
fix 50363: IIS: Prevent chunk encoding of empty message bodies for 204, 205 and 304 responses. (timw)
fix 50975: IIS: Fix hanging of Transfer-Encoding: chunked requests when Content-Length header is present in request as well. Also addresses situation where IIS appears to create a Content-Length header for a small chunk encoded request when none was present in the original request. (timw)
fix 47679: IIS: stop truncation of request headers when ISAPI redirector used as an extension without the corresponding filter installed. (timw)
fix NSAPI: Use lower case header names for responses. Otherwise the web server might add chunked transfer encoding header in addition to our content length header.
update Docs: Improve load balancer documentation. (rjung)
Changes between 1.2.30 and 1.2.31

fix 49413: AJP13: Drop flush packets send by the backend after the response has been finished. (rjung)
update AJP: Log the local and remote socket address. (mturk)
update Watchdog: Move the maintain workers outside the critical section allowing other threads to use the connection pool during maintenance. (mturk)
update Common: Add svn revision to init log message. (rjung)
fix Common: Don't destroy errno during trace logging. (rjung)
update Apache: Add support for Apache 2.3/2.4. (rjung)
update Apache: Added version number resource for mod_jk.so on Windows. (timw)
update 48501: IIS: Added rotatelogs style log rotation to ISAPI Redirector. (timw)
fix 38895: IIS: Use RAW headers instead of CGI headers by default to prevent conversion of underscores '_' to hyphens '-' in header names. Old behaviour can be enabled by defining USE_CGI_HEADERS. (timw)
fix 49511: IIS: Do not override IIS log information when subsequent requests on a keep-alive connection are not mapped into the ISAPI Redirector. (timw)
fix Docs: Document SSLOptions needed for SSL information forwarding. (rjung)
update Docs: Grammar and style improvements and clarification about serving static content by IIS. Patch provided by André Warnier. (rjung)
fix Docs: Update subversion paths used in docs. (rjung)
Changes between 1.2.28 and 1.2.30

update Apache: Improve compatibility with Apache 2.3. (rjung)
fix 46632: Apache: Do not register child cleanup for our pools. (mturk)
fix 46893: Apache: Log warning only if JkShmSize was actually set in the configuration. (mturk)
update IIS: Include optional chunking support. Off by default. (mturk)
fix 48763: IIS: Do not send Content-Length when using chunked encoding or length larger 4GB. (mturk)
fix 48223: IIS: Propagate correct backend error code to IIS. (rjung)
fix 47867: IIS: crash during startup, when compiled with VS2008 and workers.properties contains unsupported properties. Patch provided by Indrek Juhani (rjung)
fix 47628: IIS: Fix deadlock when restarting the Application Pool caused by not releasing the critical section lock. Patch provided by Bret Prucha. (mturk)
fix IIS/NSAPI: Correct log file flushing after each line. (mturk)
add NSAPI: Add Microsoft Visual C++ Makefile. (mturk)
update AJP: Improve socket shutdown handling. (mturk)
update AJP: Ensure we never reuse a non reusable socket. (mturk)
update AJP: Tolerate a single excess packet when waiting for cpong. (mturk)
update AJP: Check protocol correctness more strictly. (mturk)
update 48410: AJP: Use poll instead select so we can work with more then 1024 sockets. (mturk)
fix 46503: AJP/Status: Garbage data in worker domain and route. (mturk)
fix 48276: AJP: When worker contact cannot be resolved mark the worker as disabled instead failing to start the server. (mturk)
fix 48169: AJP: Improve CGI interoperability by closing all sockets during EXEC. (mturk)
add Status: Add number of open backend connections to status worker. This feature is experimental, the displayed value might not be accurate. (mturk)
update 47224: Status: When address gets changed invalidate all opened sockets in the endpoint cache. This will cause new backend connections to get opened using new address. (mturk)
fix 48305: Status: Do not show "secret" property when doing dump. (mturk)
fix 45610: Status: Don't accept requests with empty value for sub worker parameter. (rjung)
fix 45610: Status: Fix erroneous unsetting of sticky_session and sticky_session_force when updating other load balancer attributes via the status worker. (rjung)
fix 47222: Status: Add ping_timeout to the shared memory and allow dynamic configuration. (mturk)
fix Status: Remove duplicate "errors" line in property view of AJP13 workers that are part of a load balancer. (rjung)
fix LB: Fix route logging. (rjung)
update Logging: Automatically detect size of thread id for logging. (rjung)
update Logging: Add optional log file locking for Windows when defining JK_LOG_LOCKING. (mturk)
update Configuration: Update example configuration. (rjung)
update Docs: Update information about tools needed to create a release. (rjung)
fix 47983: Docs: Fix typo in example config which breaks startup. (rjung)
update Build: Force copy of automake files. (rjung)
update Build: Tomcat code repository structure cleanup reflected in documentation and build script. (rjung, mturk)
Changes between 1.2.27 and 1.2.28

add Apache: Add more environment variables to overwrite request information. Useful in case a proxy is in front of Apache and sends us original request information e.g. via custom headers. (rjung)
update Apache: No longer preallocate entries for JK request log. (rjung)
fix 46352: Apache: Fix crash when using SetHandler jakarta-servlet in VHost without any JkMount. Crash due to incorrect initialization of mount extensions. (rjung)
fix Apache: JkWatchdogInterval had wrong interval calculation causing a 10 times higher watchdog interval then configured. (mturk)
fix Apache: Activate forwarding of SSL key size by default. (rjung)
fix 46169: Apache 1.3: Backport use_server_errors mount extension. (rjung)
fix 46763: Apache 2.0: Survive the log mutex during graceful restart. Patch provided by Eiji Takahashi. (mturk)
fix 46416: Apache 2.0 on Windows: Include mstcipip.h even if the apr doesn't include it. (mturk)
update IIS: Update uriworkermap.properties file on a regular interval. This requires both worker_mount_reload and watchdog_interval to be defined. (mturk)
update IIS: Remove obsolete entries from registry file. (mturk)
fix 46579: IIS: Use local environment table instead environment variables for setting the JKISAPI_PATH and JKISAPI_NAME. (mturk)
update LB: Add new property error_escalation_time to fine tune escalation of local errors to global errors. (rjung)
update LB: If the sticky session affinity mark contains a dot, treat the part before the dot as the domain name. This allows to have full node session affinity with domain failover. (mturk)
fix LB: make forced recovery work with local error states. (rjung)
fix LB: Only update error state and error time, if we actually have a new state. (rjung)
fix LB: Set global worker state to error when we reach max_reply_timeouts, or fail_on_status triggered hard error. (rjung)
update AJP: Add a new error type JK_AJP_PROTOCOL_ERROR. (mturk)
update AJP: Allow worker ports lower or equal to 1024. (rjung)
update AJP: Improve some AJP error log messages. (mturk)
update Status: Allow changing worker address and port of AJP workers. The address is resolved on next request for that worker. (mturk)
update Status: Allow update actions to show error messages in the result page. (rjung)
update Status: Refactor update actions. (rjung)
update Status: Do not redirect to the show or list page, if an error occured during an action. (rjung)
update Status: Include error time in display. (rjung)
update Status: Remove redundant port information from worker display. Rename address column and remove its explanation from the legend. (rjung)
update Status: Optimize forced uriworkermap.properties reload. (mturk)
fix Status: Fix crash in text display. (rjung)
fix Status: Show - Edit - Show always ends in single lb member show, even when started from all members lb show. (rjung)
fix Status: Wildcards in sub worker names were broken for update actions. (rjung)
fix Status: Add use_server_errors to map display. (rjung)
update SHM: Move locking into the data pull and push methods. (rjung)
update JNI: Deprecate JNI workers. (rjung)
fix Netware: Missing define for MAX_PATH. Patch by Guenter Knauf. (rjung)
update Docs: Add a new HowTo page about reverse proxies. (rjung)
update Docs: Add an explanation of local error states to the timeouts documentation. (rjung)
update Docs: Clarify relation between socket_timeout and socket_connect_timeout. (rjung)
update Docs: Clarify IIS URL rewrite feature. (rjung)
fix 46834,46734: Docs: Fix a couple of missing or broken links. (markt,rjung)
fix Docs: Add 2008 news to main page and menues. (mturk, rjung)
Changes between 1.2.26 and 1.2.27

fix 46109: Decay reply_timeouts even when lb method is busyness. Also reset reply_timeouts during forced recovery. (rjung)
update AJP13: Recycle connection if previous request didn't complete. (mturk)
update Maintain should not run multiple times in parallel. (mturk)
fix Apache: Fix small memory leak during restart. (mturk)
update Improve signal handling during socket shutdown. (mturk)
add URI Map: Add debug dump function for uri worker map. (rjung)
update Add revision number to version info for non-release builds. (rjung)
add IIS: Optionally allow chunked encoding for responses. At the moment only usable, if build with ISAPI_ALLOW_CHUNKING defined. Based on patch by Tim Whittington. (rjung)
update IIS: Optionally use raw headers instead of CGI headers. Fixes problem "underscore=dash" problem in header names. At the moment only available, if build with USE_RAW_HEADERS defined. (rjung)
update IIS: Optionally improve IIS 5.1 compatibility. At the moment only available, if build with AUTOMATIC_AUTH_NOTIFICATION defined. Based on patch by Tim Whittington. (rjung)
fix IIS: Fix memory corruption due to parallel initialization by multiple threads. (rjung)
update Windows: Use non-default socket keepalive interval. (mturk)
add IIS: Add environment variables JKISAPI_PATH and JKISAPI_NAME. (mturk)
add Added socket_connect_timeout directive for setting the connect timeout for the socket. This enables to have low connection timeout but higher operational timeouts. (mturk)
fix AJP13: [CVE-2008-5519] Always send initial POST packet even if the client disconnected after sending request but before providing POST data. In that case or in case the client broke the connection in a middle of read send an zero size packet informing container about broken client connection. (mturk)
add AJP13: Added connection_acquire_timeout directive for setting the absolute timeout the worker will wait for a free endpoint. (mturk)
update Apache: Allow to set path parameter used when doing JkStripSession. (mturk)
update Refactor retries implementation and change semantics of retries attributes. (mturk)
update Status: Allow showing only a single member for a load balancer. (rjung)
update Status: Add display of seconds since last statistics reset and access and transfer rates. (rjung)
add AJP13: Add a configurable retry_interval time. (rjung)
update Documentation: Enhance description of connection_pool_size. (rjung)
update IIS: Refactor error page generation. (mturk)
fix IIS: SERVER_NAME variable can be the same for multiple different server instances if requests are handled according to the ip:port combination. Use INSTANCE_ID variable to which the request belongs instead. (mturk)
add Allow forwarding server error pages. This can be done on per-uri basis using new use_server_errors extension. (mturk)
add Added session_cookie and session_path for configuring default session identifiers. (mturk)
update Use max_packet_size also as TCP send and receive buffer size. (mturk)
update Apache: Do not allow Apache to start in multi-threaded mode if mod_jk was only build for single threaded server (prefork). (mturk)
fix 45812: Add done() service method that causes sending EOS bucket for Apache httpd 2.x. This allows filter chain to work properly. (mturk)
add Added connection_ping_interval, ping_timeout and ping_mode directives. (mturk)
fix Apache: Use correct ld flags provided by apxs when building module. Prevents some crashes on AIX for httpd 1.3 module. (rjung)
fix Documentation: "val" attribute numbering in status worker needs to start with 0 instead of 1. (rjung)
update Documentation: Remove JNI parameters from sample configuration in the workers common howto. (rjung)
fix 45026: For Apache httpd 2.x add "Unknown Reason" as the reason phrase, if we get an empty one from the backend. Otherwise httpd 2.x returns status 500. (rjung)
fix Build: Fix Cygwin build. (rjung)
update Documentation: Add info to docs, that variables sent via JkEnvVar are not listed in request.getAttributeNames(). (rjung)
add Add watchdog background thread for Apache 2.x and IIS doing internal maintenance (idle connection checks, backend probing). See JkWatchdogInternal (Apache) and watchdog_interval (IIS). (mturk)
update Change log level of some messages from error to info. (mturk)
fix Documentation: Fix docs for worker attribute "secret". (rjung)
update Detect correct plugin name for various web servers via additional preprocessor defines. (rjung)
fix LB: Do not put loadbalancer node in error state if there is opened channel. This fixes the bug when new connection fails due to busyness, causing opened connections fail stickyness. This brings back per-node busy counter and private state array for each request. We can mark the state as error for failover to work while still operating and reporting node as OK if there are opened working connections. (mturk)
fix 44738: Fix merging of JkOption ForwardURI* between virtual hosts. Patch contributed by Toshihiro Sasajima. (rjung)
add URI Map: Add extension attributes to uri worker map. Allowed are reply_timeout, active/disabled/stopped and fail_on_status. Usage currently only implemented for httpd and IIS. (rjung+mturk)
fix URI Map: Make dynamic reloading atomic and free memory not needed any longer. (rjung)
add Configure: Don't use post httpd 2.2.0 API functions when building with new --enable-api-compatibility configure switch. (rjung)
fix Apache: JkAutoAlias does not work in combination with JkMountCopy if there are no JkMount in virtual host. (rjung)
update LB: Optimize state macros to improve performance. (rjung)
add Apache: Allow dynamic setting of reply timeout using the environment variable JK_REPLY_TIMEOUT. (rjung)
add Status: Add manageability for ajp parameters of ajp workers and ajp lb members. (rjung)
update Status: Change parameter names of update action to make them more easily distinguishable from other parameters. (rjung)
add Status: Add ajp worker statistics also for workers, that are not lb members. (rjung)
update AJP: Refactor factories, move ajp13/ajp14 common parts into ajp_factory. (rjung)
update Status: Only sync shm worker config values of the workers for which we changed values. (rjung)
fix Status: Set lb_factor instead of distance. (rjung)
update Status: Minor layout changes, use drop down instead of multiple text links. (rjung)
update SHM: Use local copies of read mostly attributes of lb sub workers in lb and status worker. (rjung)
update Status: Add "dump" action to dump our initial configuration. (rjung)
update Status: Use property table to decide which cmd action uses which output elements. (rjung)
update Common: Include original configuration map in worker_env to make it available for workers, e.g. the status worker. (rjung)
update LB: Refactor "route" return for httpd note. Don't use a member of the worker_record, because that's not thread safe. (rjung)
update Common: Refactor "retries", remove from service and jk_worker, move into ajp worker instead. (rjung)
update SHM: Use distinct structs for lb and ajp13 in shm. Improves type safety and saves a few bytes. (rjung)
update SHM: Remove unused attributes. (rjung)
update SHM: Automatically determine shm size for all web servers. (rjung)
update SHM: Make open/attach logging consistent for all web servers. (rjung)
update Status: Include server local time in output. (rjung)
fix 44116: Fix handling of multiple JSESSIONID cookies. (rjung)
fix 37850: Use thread safe localtime_r where appropriate. (rjung)
fix Use thread safe strtok_r on more platforms, especially AIX. (rjung)
update Status: Improve XSS hardening. (rjung)
update 35303: Move initialization of service members with defaults from web server specific code to our generic jk_init_ws_service() function. (rjung)
fix 36385: Add missing prepost CPing/CPong directly after connect in case prepost CPing is used, but no connect CPing. (rjung)
update 37322: Apache: Enhance robustness of message formating in jk_error_exit(). (rjung)
fix 44147: Multiple load balancing workers problem. (rjung)
Changes between 1.2.25 and 1.2.26

fix 42003: Allocate memory instead using fixed size from the stack. (mturk)
fix 43229: Load balancer does not do fail over after reply timeouts. (rjung)
fix JKStatus: Repair detailed Apache httpd version display. This was broken for httpd version 2.2.4+. (rjung)
update LB/AJP: Refactoring of jk_connect.c, jk_ajp_common.c, jk_lb_worker.c (rjung)
fix Configure: Repair broken apxs auto-detection. (rjung)
update Configure: Remove trace logging from compiled code via new --disable-trace configure switch. (rjung)
update Common: Maintain idle connections in decreasing (LRU) slot order. (rjung)
update Apache: Create JK_WORKER_ROUTE and JK_REQUEST_DURATION notes for access log even if no JkRequestLogFormat is set. (rjung)
update JKStatus: Enhance URI to worker map listing for Apache httpd. We now list maps for all virtual servers and not only the one, in which JKStatus itself was called. (rjung)
update JKStatus: Enhance URI to worker map listing. Update stale uriworkermap.properties immediately. (rjung)
fix 43873: Fix small memory leak occuring during httpd restart. (rjung)
update Common: Allow '*' for the worker name in exclusion rules (resp. JkUnMount) which will override all workers. (rjung)
fix 42038: Correct overlay of mounts and unmounts for IIS. (rjung)
fix 43684: Replace JkMountFile by JkMountFileReload in uriworkermap.properties docs. (rjung)
update Apache: Add new value "All" for JkMountCopy. (rjung)
fix 43516: Memory leak for Apache httpd module of size 8KB for every virtual host without JK directive after each restart. (rjung)
update Apache: Cleanup init and destroy of server configuration. (rjung)
update Apache: Remove global configuration items from per server configuration. (rjung)
update Apache: Remove unused attributes secret_key and automount/JkAutoMount. (rjung)
update Cleanup of jk_uri_worker_map. (rjung)
update Documentation: Small additions to JkShmFile documentation. Contributed by Gerhardus Geldenhuis. (rjung)
fix AJP13: Ignore flush packets before we received the response headers. (rjung)
fix Fix crash during startup when using worker configuration inheritance (attribute "reference") and log level debug. (rjung)
fix AJP13: Match header names exactly against pre defined constants. Avoid possible confusion with custom header names using a standard header name as a prefix. (rjung)
fix jkstatus: Fix correct parameter validation at JkStatusUpdateTask and JkStatusUpdateLoadbalancerTask ant tasks. Reported by Christian Mittendorf. (pero)
Changes between 1.2.24 and 1.2.25

update IIS: Fix shm shutdown behaviour. (rjung)
update General: fail_on_status used in a load balancer can optionally do fail over without putting the failed worker in error state. (rjung)
update NSAPI: Improve build description for Unix. (rjung)
update NSAPI: Add initialization startup message containing JK version. (rjung)
fix General: Declare static functions as static. (jim)
update Documentation: Clarify fail_on_status behaviour. (rjung)
fix General: Do fail_on_status before returning the response headers. (rjung)
update NSAPI: Fix shm shutdown behaviour. (rjung)
update NSAPI: Set return status even if request ended with an error. (rjung)
update NSAPI: Allow using without shm_file on WIN32 and Netware. (rjung)
fix NSAPI: Fix Crash of nsapi for log level debug and unset refect_unsafe. (rjung)
update NSAPI: Improve Solaris and Linux Makefiles for nsapi build. (rjung)
fix Build: Improve pid_t type detection during configure on Solaris. (rjung)
update Build: Experimental build support for gcc on WIN32 and Netware. (fuankg)
update Build: Makefile optimizations for Apache httpd 1.3/Netware . (fuankg)
fix General: Fix missing flush bug introduced in 1.2.24. (rjung)
Changes between 1.2.23 and 1.2.24

update Documentation: Improved workers.properties description in the reference guide. (rjung)
update Documentation: Add a HowTo about the various timeouts. rjung)
update Logging: add milliseconds to the default timestamp format, if we have gettimeofday(). (rjung)
update Apache: add milliseconds (%Q) and microseconds (%q) as possible JkLogStampFormat conversion specifiers. This does not use strftime(), but needs gettimeofday(). (rjung)
update IIS & Sun: Log service failures also, if return code is negative. (rjung)
fix 42849: Abort startup of Apache httpd 1.3 in case mod_jk initialization failed. We already do the same for Apache httpd 2.x. (rjung)
fix 42849: Refuse to operate with IIS in case the initialization failed. Instead requesting isapi_redirect.dll 500 will be returned to the user. This is as closest as it can get to Apache Httpd where we refuse to start the server in case of fatal initialization errors. (mturk)
fix Load Balancer: Fix a deadlock in lb worker, which was exposed on Solaris for threaded Apache MPMs. (rjung)
update Logging: handle LWP IDs as 32 Bit unsigned. Try to make it work, although pthread IDs are opaque. (rjung)
update JkStatus: Added manipulation of max_reply_timeouts. (rjung)
update LB, Status: Add feature max_reply_timeouts, to make lb tolerant against occasional long running requests. (rjung)
update JkStatus: Added OK/IDLE as the successor of N/A. (rjung)
update Status worker: Renamed runtime states. All states have a major state (OK or ERR) and a substate. Changed the name N/A to OK/IDLE. Added docs about the meaning of the states to the status worker page in the reference guide. No new states have been added to code. (rjung)
update Common: Add recovery options for recovering idempotent http methods HEAD and GET. (rjung)
fix Correct documentation for worker attributes retries and recovery_options. (rjung)
fix Make writing log lines and line endings more atomic. (rjung)
update Common: Refactored and unified jk_map_read_prop* and jk_map_load_prop* for all use cases. (rjung)
update Common/Apache/IIS/Netscape: Add an option to check decoded URLs for potentially malicious constructions. (rjung)
update IIS: Document auth_complete and uri_select. (rjung)
update Apache/IIS/Netscape: Change the default forwarding encoding to the new proxy method. (jfclere, rjung)
update Common: Optionally reencode URIs before forwarding to the backend. Based on the URI reencoding done bei httpd mod_proxy. (jfclere, rjung)
update Common: auto-detect correct print format for pid_t. This fixes at least compiler warnings on Solaris. (rjung)
fix 42608: Handle Content-length as unsigned 64Bit to allow for huge up- and downloads. (rjung)
update Apache: Add forwarding uri to debug log. (rjung)
update Docs: Clarify relation between worker names and jvmRoute for load balancing. (rjung)
fix Use initial zero timeout for jk_is_socket_connected. The resulting detection is the same but offers a huge performance increase with mod_jk. In most cases the Operating System does not favor the 1 microsecond timeout, but it rather rounds that up to much higher value (frequency of interrupt timer which on most systems defaults to 100Hz). Patch provided by David McLaughlin. (mturk)
update NSAPI: Check correct log file and shm file configuration during startup. (rjung)
fix NSAPI: Add support for the general options concerning retries, flushing and connection persistance. (rjung)
fix NSAPI: fix crashes due to use of mount attribute in workers.properties. Changed initialization order. (rjung)
fix Improved handling of libtool and discrepancies between CC env variable and CC used during apache build by configure script. (rjung)
fix Always build with thread support, unless flag --enable-prefork is set during for configure. (rjung)
update Use snprintf/vsnprintf from ap_snprintf.c for platforms other than Windows, which might lack snprintf/vsnprintf implementations when NOT build for Apache httpd 2.x/APR (e.g. Sub Web Server) or without using configure. (fuankg)
update Imported ap_snprintf() from Apache 1.3. (fuankg)
fix Fix incorrect log object cleanup during statup, leading to crashes at least on iSeries. (rjung)
update Add jk_stat() and jk_file_exists() as wrapper functions. i5/OS V5R4 expects filename in ASCII for fopen but requires them in EBCDIC for stat(). (hgomez)
update i5/OS (AS/400) V5R4 port where Apache 2.0 modules should now use UTF8. (hgomez)
update Docs: Add comments on i5/OS build for V5R4 and previous releases. (hgomez)
Changes between 1.2.22 and 1.2.23

update [CVE-2007-0450] and [CVE-2007-1860]: Change the default value of JkOptions to ForwardURICompatUnparsed. The old default value was ForwardURICompat. This should make URL interpretation between Apache httpd and Tomcat consistent (prevent double decoding problems). (rjung)
Changes between 1.2.21 and 1.2.22

fix Refactor line endings logging to make it correct for all platforms and webservers. (mturk)
update Added command line windows make files. (mturk)
update Allow fail_on_status directive to be multi line. (mturk)
fix 42076: Fix name of new option from ForwardCertChain to ForwardSSLCertChain as documented. (rjung)
fix Docs: Fix a couple of typos, change format of a few tables, fix links to news pages. (rjung)
fix Fix correct URL for TC 6 examples in new IIS rewrite.properties configuration example file. (rjung)
fix Add svn properties to several files. (rjung)
update Add TC 6 examples to uriworkermap.properties in config examples. (rjung)
update Allow multiple status codes for fail_on_status directive. The status codes can be delimited by space or comma characters. (mturk)
update IIS. Added pcre like regular expressions for url rewrite rules. (mturk)
fix 41922: Apache 1.3. Enable JkEnvVar. (mturk)
update Apache. Add --enable-flock configure parameter for explicit compilation of faster flock() system calls for OS supporting those calls. By default the fcntl system call for locking will be used that is a little bit slower but it can work on NFS mounted volumes as well. (mturk)
fix 41562: Add Debug logging for read from client in ISAPI Redirector. Contributed by Tim Whittington. (mturk)
update Apache. Add ForwardSSLCertChain JkOption. Contributed by Patrik Schnellmann. (mturk)
fix IIS. Do not forbid access to web-inf or meta-inf if there is no mapped worker. This allows to have resource with those names that are outside mapped contexts. (mturk)
update Apache. Use process id for creating shared memory name and delete shared memory and shared memory lock files on exit. (mturk)
fix IIS. Fix Keep-Alive regression introduced in 1.2.21. (mturk)
update Delete unused check for empty init_map during startup. (rjung)
fix 41770: Fix startup error if no JkWorkersFile is used. (rjung)
update Use JK_TRUE/JK_FALSE instead of OK/!OK as return values in init_jk(). (rjung)
update Minor adjustments to apache startup log messages (when to use STDERR, remove deprecated NOERRNO flag, shm warning and warnings for usage of default files). (rjung)
update Replace APR precompiler directive by httpd mpm_query to detect MPM threading. Add a debug log message about auto-detected pool size. (rjung)
fix Make MMN check easier to understand and a little more precise (for new ap_get_server_banner()/ap_get_server_description()). We use the new API only for Apache httpd 2.3. This way our binaries are not tightly coupled to a minor 2.0 version, and we don't use ap_get_server_banner() any way. (rjung)
fix Use the full description string ap_get_server_description() instead of the truncated info from ap_get_server_banner(), because this info gets used internally (status worker display and ajp14 backend communication) and is not send back to the normal user. (rjung)
fix 41757: Document the "--enable-prefork" flag of configure. (rjung)
update Enhance log messages for failures when parsing attribute maps. (rjung)
fix Correct log message during worker initialization, in case remote host could not be resolved. We logged the default host name "localhost" instead of the configured one. (rjung)
fix 41770: Fix the second part of the bug: local_worker and local_worker_only is missing from the list of deprecated attributes (and not supported either), so prevents the web server from startup. (rjung)
Changes between 1.2.20 and 1.2.21

fix [CVE-2007-0774]: A denial of service and critical remote code execution vulnerability. Caused by buffer overflow in map_uri_to_worker() when URL were longer that 4095 bytes. Reported by ZDI (www.zerodayintiative.com). Please note this issue only affected versions 1.2.19 and 1.2.20 of the Apache Tomcat JK Web Server Connector and not previous versions. Tomcat 5.5.20 and Tomcat 4.1.34 included a vulnerable version in their source packages. Other versions of Tomcat were not affected.
add Check the worker. parameters and don't start if the parameter is not a valid one. (jfclere)
add 41439: Allow session IDs to get stripped off URLs of static content in Apache by adding JkStripSession directive (configurable per vhost). (mturk)
add Change semantics of empty defaults for JkEnvVar variables. Until 1.2.19: not allowed. In 1.2.20: send variables as empty strings, if neither set to non empty in config, nor during runtime. Starting with 1.2.21: If config has no second argument only send variable if set (even when set to empty string) during runtime. Allows good combination with condition attribute in tomcat access log. (rjung)
fix 41610: Fix incorrect detection of missing Content-Length header leading to duplicate headers. Contributed by Boris Maras. (rjung)
fix Better build support for SunONE (Netscape/iPlanet) webservers. (jim)
add Add warning if duplicate map keys are read and are not allowed, e.g. when parsing uriworkermap.properties. (rjung)
fix Don't concat worker names, if uriworkermap.properties has a duplicate pattern, instead overwrite the worker. (rjung)
fix Log deprecation message even in duplication case. (rjung)
fix uriworkermap.properties: Fix off-by-one problem when deleting URL mapping during reloading of uriworkermap.properties. (rjung)
add 41439: Allow session IDs to get stripped off URLs of static content in IIS (configurable). (rjung)
add 41333: Refactoring isapi_plugin configuration reading. (rjung)
add 41332: Add some more errno logging and unify the format. (rjung)
add JkStatus: Improved logging by adding status worker name to messages. Added messages to the recover worker action. (rjung)
add JkStatus: Refactoring searching for workers and sub workers. (rjung)
add 41318: Add configuration to make status worker user name checks case insensitive. (rjung)
add JkStatus: Add estimated time until next global maintenance to other mime types and adopt jkstatus ant task. (rjung)
add JkStatus: Show estimated time until next global maintenance. Change displayed time until next recovery to a min/max pair. (rjung)
add JkStatus: Allow a user of a read/write status worker to switch it to and from read_only mode temporarily. (rjung)
fix JkStatus: Do not show read/write commands in a read_only status worker. (rjung)
add JkStatus: Allow lb sub workers in error state to be marked for recovery administratively from the status worker. (rjung)
add Load Balancer: Do not try to recover multiple times in parallel. Use additional runtime states "PROBE" and "FORCED". (rjung)
fix JkStatus: Improve data synchronization between different processes. (rjung)
fix 41381: Fix segfault in feature fail_on_status (wrong order of log arguments). Patch by Juri Haberland. (rjung)
fix Use correct windows line endings for log file on WIN32 platform. (rjung)
Changes between 1.2.19 and 1.2.20

add JkStatus Ant Task documentation page. (pero/rjung)
add JkStatus Ant Tasks: Add new tasks for update and reset. (pero)
update JkStatus Ant Tasks: Update for new xml status format. (pero)
update Allow integer and string values when setting enumeration/boolean attributes via status worker update action. (rjung)
add Docs: New reference guide page for status worker. (rjung)
update Docs: Renaming the config dir to reference and using the title Reference Guide in the docs. (rjung)
update Added retry_on_status for workers directive. (mturk)
update Status Worker: Add directive to make property prefix and good/bad rule configurable. (rjung)
update Status Worker: Omit lb members when att=nosw. (rjung)
update Status Worker: New command cmd=version for a short version output. (rjung)
update Status Worker: New output stype mime=prop produces property lists. (rjung)
fix Apache: Fix incorrect handling of JkEnvVar when Vars are set multiple times. (rjung)
update Renamed jvm_route to route. Deprecated jvm_route, but still use it as fallback when parsing the worker configuration. (rjung)
update IIS: Make uriworkermap file reload check interval configurable. (mturk)
update Apache: Make uriworkermap file reload check interval configurable. (rjung)
update Status Worker: Add directives for customizing the XML output (ns, xmlns, doctype). (mturk)
add Docs: New page with description of uriworkermap. (rjung)
update Docs: Added short description of max_packet_size to worker reference. (rjung)
update Status Worker: All functions accessible also for xml and txt mime types (list, show, update, reset). (rjung)
update Status Worker: New global health indicators for load balancers named bad (error, recovering or stopped), degraded (busy or disabled) and good (the rest, active and OK or N/A). (rjung)
update Status Worker: New edit page, to change one attribute for all members of a load balancer. (rjung)
update Status Worker: Standard logging for status worker. (rjung)
update Status Worker: code refactoring. (rjung)
update Status Worker: New attribute user (list) denies access, if the request user in the sense of remote_user is not in this list. Empty list = no deny (rjung)
update Status Worker: New attribute read_only disables the parts of the status worker, that change states and configurations. (rjung)
fix 36121: Don't change main uri when mod_jk serves included uri. (markt)
update Apache VHosts: Merge JkOptions +base - -base + +vhost - -vhost. (rjung)
update Apache Docs: Adding requirements, context information, default values and inheritance rules to the Apache config documentation. (rjung)
update Status Worker: Add source type to status worker, remove the redundant "context" column in the map listing (context=uri). (rjung)
update uriworkermap: On reload of the file, all old entries from the previous file version get deleted, before the new ones are being read. (rjung)
fix Keep normal maps and exclusion maps internally separate. Don't treat them as the same when adding a rule. (rjung)
update Status Worker: Display mapping rules also for non-lb workers and in global view. (rjung)
update Apache VHosts: Use the vhost log files instead of the main log. (rjung)
update Apache VHosts: Allow individual timestamp formats by refactoring the formatting method. (rjung)
update Apache VHosts: Adding all missing config items to the virtual host level. Don't overwrite the settings from the global server, but inherit them in case they are not set in the virtual host. (rjung)
update Apache: remove unnecessary function names from log messages. (rjung)
update Apache: add a default log file location and a message, if the default gets used. (rjung)
update Apache: add missing JK_IS_DEBUG_LEVEL() (rjung)
update Apache VHosts: Allow JkWorkersFile, JKWorkerProperty, JkShmFile and JkShmFileSize only in global virtual server. (rjung)
update Add some more jk_close_socket() and reduce log level for some info messages. (rjung)
update Load Balancer: Added the Sessions strategy. Contributed by Takayuki Kaneko. (rjung)
update Docs: Minor enhancements and syncing with more recent versions. (rjung)
fix 40997: Separate uri mappings from their '!' counterpart when checking for duplicates in uriworkermap reloading. (rjung)
fix 40877: Make sure the shared memory is reset on attach for multiple web server child processes. (mturk)
update IIS: Added shm_size property to be able to deal with over 64 workers configurations. (mturk)
update IIS: Increase default thread count to 250, so its the same as Apache Httpd default configuration. (mturk)
fix 40966: Fix socket descriptor checks on windows. (mturk)
fix 40965: Initialize missing service parameters. (mturk)
fix 40938: Fix releasing of rewrite map. Thanks to Chris Adams for spotting that. (mturk)
update Apache: Added +FlushHeader JkOptions. (mturk)
update Added explicit flush when AJP body packet size is zero. (mturk)
fix 40856: Fixing case sensitivity bug in URL mapping. (rjung)
fix 40793: Documentation: Improvements to Apache HowTo provided by Paul Charles Leddy. (markt)
fix 40774: Fixing wrong recursion termination. This one restricted the "reference" feature unintentionally to 20 workers. (rjung)
fix 40716: Adding "reference" feature to IIS and Netscape. (rjung)
fix Documentation: Corrected SetEnvIf syntax in JK_WORKER_NAME example. (rjung)
fix Documentation: Added forgotten STATE and ACTIVATION notes for load balancer logging in Apache. (rjung)
update Apache: Use instdso.sh instead libtool: libtool does not work on HP-UX for example. (jfclere)
Changes between 1.2.18 and 1.2.19

update Docs: Add SetHandler and new env var to Apache config docs. (rjung)
update Apache 1.3: Backport "no-jk" feature. (rjung)
update Apache: Add an environment variable to make SetHandler "jakarta-servlet" more useful. The variable is JK_WORKER_NAME, but can be changed by the new directive JkWorkerIndicator. (rjung)
fix LB: Don't use single worker shortcut, if the single worker is being diabled. (rjung)
fix Status worker: Add short explanation of activation and error states to legend. (rjung)
fix Docs: Add meaning of zero timeout values for various timeouts in workers.properties. (rjung)
fix LB: Cleanup of Mladens forced recovery. (rjung)
fix LB: Do not change lb_value for recovering workers to max, if we are using BUSYNESS method. (rjung)
fix Apache: Since 1.2.14 mod_jk failed to detect client abort. (rjung)
fix Docs: Corrected description of JkEnvVar. (rjung)
fix Solaris: Detect filio.h in configure to make the new connection detection build on solaris (r432825). (rjung)
update Add feature to force the recovery of workers that are member of loadbalancer if all the members are in error state. This fixes the time gap where 503 was returned caused by recovery_timeout although the backend was ready to handle the requests. (mturk)
update Docs: Seperate deprecated directives in their own table. (rjung)
update Docs: Allow "-" and "_" in worker names. (rjung)
update Allow multiple lines with attributes "balance_workers" and "mount". (rjung)
fix Make jk_is_some_property match more precisely. (rjung)
update JkStatus: Make refresh interval changeable. (rjung)
fix JkStatus: Adjust display of recover time wrt. global maintenance. (rjung)
update LB: Resetting worker state from OK to NA, if worker has been idle too long. (rjung)
fix Avoid compiler warnings concerning the use of lb_*_type arrays. Use functions instead. (rjung)
update Added %R JkRequestLogFormat option for Apache 1 and Apache 2. (mturk)
update Allow changing jvm Route from status manager. (mturk)
fix Do not retun 400 if Tomcat fails in the midle of the post request. Return 500 insted. (mturk)
update LB: Combine ok/error/recovering/busy runtime states into a single scalar. (rjung)
update LB: Combine active/disabled/stopped configuration states into a single scalar. (rjung)
update LB: Add several Apache notes to enable standard logging for load balancer results. (rjung)
update LB: Reorganisation of the main load balancer service loop. (rjung)
update Implement hierarchical worker configuration via attribute "reference". (rjung)
update Log deprecated properties. (rjung)
fix IIS: Fix simple_rewrite for the cases where the rewritten url is larger then the original one. (mturk)
update New JkOption "DisableReuse" to disable connection persistence. (jim)
update LB: Move sessionid retrieval out of get_most_suitable_worker into service. (rjung)
update Code cleanup for all service methods (use TRACE, JK_LOG_NULL_PARAMS, null pointer checks). (rjung)
update JKSTATUS: add refresh link. No refresh for updates. Redirect to list view after update. (rjung)
update Add new hook add_log_items into servers. (rjung)
update APACHE httpd: Rename apache logging notes. (rjung)
update LB: Rename lock and method constants. Add constants for defaults. (rjung)
fix Default log level should be INFO and not DEBUG. Default log level should be the same for all server types. (rjung)
fix Make rewrite_rule_map and log_level as non mandatory directives for isapi_redirect. (mturk)
fix 40107: Rewrite is_socket_connected function. Non blocking socket is not used any more. (mturk)
update Allow building with VS2005 without too many warnings. (mturk)
fix Decide by MMN, which piped log API we should use. mod_jk 1.2.18 broke compilation with Apache 1.3 pre 1.3.28. (rjung)
Changes between 1.2.17 and 1.2.18

fix Using socklen_t in getsockopt. Also introducing jk_sock_t. (mturk)
update Allow recovery wait time below 60 seconds (new minimum is 1 second). (mturk)
Changes between 1.2.16 and JK 1.2.17

fix Fix hanging jk status worker when certain attributes are being updated due to double locking. (rjung)
update Allow JkMount to behave like uriworkermap.properties by parsing pipe symbol as two directive marker. (mturk)
Changes between 1.2.15 and JK 1.2.16

update Added simple rewrite capability for IIS. Although simple it will fulfill most needs. (mturk)
update Added RECOVER_ABORT_IF_CLIENTERROR recovery_option that closes the connection if client connection is broken during the request. (mturk)
update Renamed cache_timeout directive to connection_pool_timeout. (mturk)
update Added connection_pool_minsize directive. (mturk)
update Deprecate recycle_timeout directive. (mturk)
update Corrected some HTML syntax bugs in output of status worker. (rjung)
update Added the refresh=n parameter to the status worker. It will update the display every n seconds. (rjung)
update Balancer: Add attribute distance to balanced workers to express preferences between workers. (rjung)
update Balancer: Add attribute jvm_route to balanced workers to be able to use the same target in different balancers. (rjung)
update Status: Add lb_mult to status. (rjung)
update Balancer: Make different balancing strategies work in a similar way (use lb_value, use decay during global maintenance, use integer factors for weights. (rjung)
update Balancer: Improve locking. (rjung)
update Balancer: Workers start slower after recovering. (rjung)
update Balancer: Make different balancing strategies work in a similar way (use lb_value, use decay during global maintenance, use integer factors lb_mult for weights). (rjung)
update Balancer: Move recovery check to global maintenance. (rjung)
update Balancer: Add global maintenance method, that is called in only one process. (rjung)
update Extend our use of autoconf to find a 32Bit and a 64Bit unsigned type and their printf formats. (rjung)
update Logging: piped loggers for JkLogFile and Apache 1.3. (rjung)
update Logging: Add PID to log lines for each log level apart from REQUEST. (rjung)
update Logging: flush buffered logs to keep lines in correct order. Output final newline together with log message. (rjung)
update Reducing shm size. (rjung)
update Only log removing of old worker, when we actually do it. (rjung)
fix 37469: Fix shared memory close for forked childs. The shared memory will be closed by the parent process. (mturk)
fix 37332: Fix potential misuse of buffer length with snprintf functions. (mturk)
fix 38859: [CVE-2006-7197] Protect mod_jk against buggy or malicious AJP servers in the backend. Patch provided by Ruediger Pluem. (mturk)
fix 38889: Use worker map sorting depending on the path elements, to comply with Servlet spec. Patch provided by Steve Revilak. (mturk)
update 36138: Added Busyness lb method. Patch provided by Chris Lamprecht. (mturk)
fix Fix pessimistic locking mode. The patch correctly handles the burst load, by syncing the access to the shared memory data. (mturk)
fix 38806: Reclycle worker even if it is disabled. This fixes hot-standby workers in error state. (mturk)
fix 37167: Allow building with BSD-ish like make. (mturk)
fix ISAPI plugin (isapi_redirect.dll) did not provide correct request data for IIS to include in the IIS log. (markt)
Changes between 1.2.14 and 1.2.15

fix Fix AJP13 Cookie2 parsing. Cookie2 was always send as Cookie. Patch provided by Andre Gebers. (mturk)
fix 35862: NSAPI plugin attempts to read freed memory and attempts to dereference a null pointer. Patch provided by Brian Kavanagh. (markt)
Changes between 1.2.13 and 1.2.14

fix Fix lb for worker mpm's with cachesize set to lower number then ThreadsPerChild is. If retries is set to value larger then 3 sleep for 100 ms on each attempt. This enables to tune the connection cache, and serialize incoming connections instead returning busy if connection count is larger then cachesize. (mturk)
fix 36525: Solaris core dump. (mturk)
fix 36102: Worker actions do not persist. (mturk)
fix 35864: Status worker doesn't list workers. Patch provided by Martin Goldhahn. (mturk)
fix 35809: JkMountCopy don't work for Apache 2.0 Patch provided by Christophe Dubach. (mturk)
fix 35298: Multiple JK/ISAPI redirectors on a single IIS site are not supported Patch provided by Tim Whittington. (mturk)
Changes between 1.2.12 and 1.2.13

fix 34397: Emergency was handled as Error. (jfclere)
fix 34474: // in URL were not handled correctly with Apache-1.3. (jfclere)
fix Use 64 bits int for transferred/read bytes.
update Added JkOptions +FlushPackets used to optimize memory usage when sending large data. (mturk)
update Added lock directive for load balancer that allows more acurate load balancing in case of burst load. (mturk)
update Added worker.maintain directive to allow customizing default 10 second timeout. On busy servers this value needs to be set on higher value. (mturk)
fix Fix for NetWare compiler to deal with different types between AP13 and AP2 SDKs. (fuankg)
update Emit much more legible user.dmp crash analysis output for WIN32. (wrowe)
fix 34558: Fix first failover request. (mturk)
Changes between 1.2.11 and 1.2.12

update Added ForwardLocalAddress JkOptions flag for passing local instead remote address. Useful for remote addr valve. (mturk)
fixFix that worker does not get used, when stopped flag is set to true. (pero)
update Add loadbalance default worker secret attribute to the documentation (pero)
Changes between 1.2.10 and 1.2.11

fixBackport SC_M_JK_STORED from JK2 for passing arbitrary methods instead failing the request. (mturk)
fixAdded missing SEARCH and ACL http methods. (mturk)
update Add worker secret attribute to the documentation (pero)
update Add a stopped flag to worker configuration. Set flag to true and the complete traffic to the worker will be stopped. Also update the Ant JkStatusUpdateTask at Tomcat 5.5.10 release. Only usefull in a replicated session cluster.(pero)
updateAdded worker maintain function that will maintain all the workers instead just the current one. This enables to recycle the connections on all workers. (mturk)
updateUse shutdown when recycling connections instead hard breaking the socket. (mturk)
updateAdd unique directives checking. The directives if unique are now overwritten instead concatenated. (mturk)
updateAllow multiple worker.list directives. (mturk)
fix 34577: For IIS log original request instead loging the request for ISAPI extension. (mturk)
fix 34558: Make sure the returned status codes are the same for ajp and lb workers. (mturk)
fix 34423: Use APR_USE_FLOCK_SERIALIZE for setting log lock on platforms like FreeBSD. Patch provided by Allan Saddi. (mturk)
fix 33843: Fix obtaining LDFLAGS that were used for building Apache HTTPD. Patch provided by Beat Kneubuehl. (mturk)
fix 34358: Enable load balancer method configuration. (glenn)
fix 34357: In some situations Apache 2 mod_jk could segfault when the JkAutoAlias directive is used. (glenn)
update Add --enable-prefork to the documentation (pero)
updateUpdate tomcat_trend.pl for new error log string formatting. (glenn)
Changes between 1.2.8 and 1.2.10

updateSet default shared memory to 64K instead 1M. (mturk)
fixDo not mark the worker in error state if headers are larger then AJP13 limit. (mturk)
update On iSeries you should use the latest PTF for Apache 2.0 (which is now 2.0.52) and ad minima SI17402/SI17061 or cumulative including them. (hgomez)
update Change the xml status format to xml attribute syntax (pero)
fix 33248: Fix builds where apxs defines multiple directories for APR includes. (mturk)
fix 32696: Return 404 instead 403 when WEB-INF is requested to comply with Servlet spec. (mturk)
updateAdded ANT task for managing jkstatus. (pero)
update If socket_timeout is set, check if socket is alive before sending any request to Tomcat. (mturk)
update Added JkMountFile for Apache web servers. This file can contain uri mappings in the form (/url=worker), and is checked for updates at regular 60 second interval. (mturk)
update Added status worker for managing worker runtime data using web page. (mturk)
update Added load balancer method directive that is used for setting the algorithm used for balancing workers. Method can be either Request (default) or Traffic. (mturk)
update Added shared memory to allow dynamic configuration. Shared memory is needed only for unix platform and web servers having multiple child processes. For Apache web server two new directives has been added (JkShmFile and JkShmSize). (mturk)
update Added textupdate mode to status worker to handle remote updates from ant tasks.(pero)
fix 33562: Fix Reply_timeout when recovery_options is larger than 1. Patch provided by Takashi Satou. (mturk)
fix 33308: Fix segfaults when ForwardDirectories is enabled with Apache 1.3
Changes between 1.2.7 and 1.2.8

update Allow anyone to debug and diagnose stack dumps using windbg or any other debugging tool, and (if they add the .pdb files to their installation) to make sense of dr watson logs. Patch provided by William A. Rowe (wrowe)
fix Fix in_addr_t usage by using the real struct ignoring typedef. Patch provided by William A. Rowe (wrowe)
fix Fix url rewriting by restoring the in place uri from which the jsessionid was removed. (mturk)
update Make load balancer algorithm thread safe by introducing mutex to the load balancer worker. (mturk)
fix Fix sending error pages for IIS to client by adding Content-Type header using correct api function call. (mturk)
fix 32696: Prevent IIS from crushing when web-inf url was requested. (mturk)
update Use default cachesize for servers that support discovering the number of threads per child process. (mturk).
fix Fix Apache content-length header parsing using case insensitive compare. (billbarker)
fix Fix parsing AJP headers using case insensitive compare. (mturk)
fix Use infinite socket timeout if socket_timeout is set to zero or less then zero. (mturk)
update Change balanced_workers to balance_workers but keep backward compatibility preserving the old directive. (mturk).
fix Fix ajp initialization for workers with cache_size set to zero. (mturk)
update 32317: Making mod_jk replication aware (Clustering Support). Patch provided by Rainer Jung. (mturk).
fix 31132: Core dump when JkLogFile is missing from conf. (mturk)
Changes between 1.2.6 and 1.2.7

update Added new property named recover_time that can be used to change the default 60 second recover time. (mturk)
update Added custom retries for worker, so we don't depend on default setting. If set to a number grater then 3, it will sleep for 100ms on retry greater then 3 and then try again. (mturk)
update Added JkWorkerProperty directive that enables omiting workers.properties file. For example: JkWorkerProperty worker.ajp13a.port=8009. (mturk)
fix Check all JSESSIONID cookies for a valid jvmRoute. If you have multiple Tomcats with overlapping domains, then you can get multiple cookies without a defined order. This will route correctly as long as the different domains don't have any Tomcats in common. (billbarker)
update Added JkUnMount directive for negative mappings that works as opposite to JkMount directives. It is used for blocking of particular URL or content type. (mturk)
update Added wildchar match uri mappings. One can now use JkMount to map /app/*/servlet/* or /app?/*/*.jsp. (mturk)
update Rewrite the logging by adding Trace options. (mturk)
update Added socket_timeout property that sets the timeout for the socket itself. (mturk)
fix Changed socket_timeout property to recycle_timeout. This better explains what the directive actually does. (mturk)
fix Changed the load balancer algorithm. The idea behind this new scheduler is the following: lbfactor is how much we expect this worker to work, or the worker's work quota. lbstatus is how urgent this worker has to work to fulfill its quota of work. We distribute each worker's work quota to the worker, and then look which of them needs to work most urgently (biggest lbstatus). This worker is then selected for work, and its lbstatus reduced by the total work quota we distributed to all workers. Thus the sum of all lbstatus does not change.(*) If some workers are disabled, the others will still be scheduled correctly. (mturk)
fix Fix iis redirector that was figuring .properties file on each request. (mturk)
fix Start fixing 64/32 bit compatibility issues. (mturk)
Changes between 1.2.5 and 1.2.6

fix Fix POST Recovery problems in LB mode. (hgomez)
add Add CPING/CPONG support to avoid problems with hang tomcats. (hgomez)
update Make POST recovery in LB configurable. (hgomez)
update Update to Apache License 2.0. (hgomez)
add For Apache 2.0, when the env var no-jk is present, mod_jk didn't handle request (declined) and as such dont forward requests to tomcats even if URL match. To be used with SetEnvIf or BrowserMatch directives for example to exclude some URL/URI or Browser (hgomez).
fix Add a fix for iSeries (AS/400) which use XOPEN/Unix98 APIs and need sa_len to be set when calling connect(), it will resolve the error EINVAL in jk_connect. (hgomez)
Changes between 1.2.4 and 1.2.5

fix Fix a thread safe bug when mapping URI's. (billbarker)
fix Fix a thread safe bug when resolving worker host name when using mod_jk with Apache 2 and the worker MPM. (hgomez)
fix Remove an unnecessary error message when connections to all load balanced workers fail. (glenn)
fix When mod_jk cannot connect to a worker include the name of the worker in the error message. This is especially helpful when you are using load balanced workers. (glenn)
fix Fix problem with mod_jk.log getting opened multiple times for Apache 2. Only one mod_jk.log can be configured. (glenn)
fix Fix Apache 2 connector so that DirectoryIndex works for an index.jsp page if JkOptions ForwardDirectories was configured. (hgomez)
fix Fix exposure of JSP source if a //path/to.jsp URL was requested in Apache 1.3 and Apache 2.0 connector. (billbarker)
Changes between 1.2.3 and 1.2.4

add Fix use of libtool for Apache mod_jk builds with more recent versions of Apache 2. (jfclere)
fix Use reentrant version of strtok() for web server's which use threads. This fixes a thread safe bug under Apache 2 and the worker MPM. (glenn)
fix Fix the Apache 2 mod_jk hook priority so that mod_jk works well with both mod_alias and mod_dir. (glenn)
Changes between 1.2.2 and 1.2.3

add Add the ability to configure JkLog to pipe its log output to an executable such as Apache rotatelogs or cronolog. Apache 2.0 only. (glenn)
add Add JkAutoAlias to Apache 2.0. (glenn)
update Apache 2/1.3, if Tomcat returns an error but not content, let Apache handle processing the error returned by Tomcat. (glenn)
add Added the load balancer sticky_session property. If set to 0 requests with servlet SESSION ID's can be routed to any Tomcat worker. Default is 1, sessions are sticky. (glenn)
fix Cleaned up detection and reporting of aborted client connections. This cleanup also makes sure that mod_jk does not pass any requests on to Tomcat if the remote client aborted its connection. (glenn)
fix Fixed a bug in Apache 2.0 which caused a POST request forwarded to Tomcat to fail if it generated SSI directives which were post processed by mod_include. (glenn)
fix Fixed a bug in JkRequestLogFormat when printing the request URI that could cause a URI with hex escapes sequences to be formatted wrong. (glenn)
Changes between 1.2.1 and 1.2.2

update tomcat_trend.pl updated script to support changed logging of aborted requests. (glenn)
fix jk set correctly the content-type in Apache 2.0, making it ready to works with mod_deflate and AddOutputFilterByType. (hgomez)
fix jk will check result of get_endpoint and handle a failure. This call can fail if the allocation for the endpoint fails because of low memory conditions causing a dereference of NULL when we try and access the endpoint. (mmanders)
Changes between 1.2.0 and 1.2.1

fix 14282: Don't send initial chunk for chunked encoding. (costin)
add Add perl scripts for analyzing mod_jk logs and generating graphs/reports. (glenn)
fix Make JK honor the CanonicalHost directive. (hgomez)
fix Log cleanup. (costin)
fix Fix typos in jk xdocs/docs. (hgomez)
fix Add JkRequestLogFormat to Apache 2.0. (hgomez)
fix Final patches to make JK iSeries compliant. (hgomez)
JK 2

JK2 has been put in maintainer mode and no further development will take place. The reason for shutting down JK2 development was the lack of developers interest. Other reason was lack of users interest in adopting JK2, caused by configuration complexity when compared to JK.

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