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The Apache Tomcat Connector - Miscellaneous Documentation    *

Changelog

Preface
    This is the Changelog for 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 1.2.29 and 1.2.30

    Native
        fix 48826: IIS: Fix core on POST. (mturk)

Changes between 1.2.28 and 1.2.29

    Native
        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

    Native
        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

    Native
        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 generic 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

    Native
        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

    Native
        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

    Native
        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

    Native
        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

    Native
        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

    Native
        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

    Native
        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

    Native
        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

    Native
        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

    Native
        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

    Native
        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

    Native
        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

    Native
        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

    Native
        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

    Native
        update Added ForwardLocallAddres JkOptions flag for
               passing local instead remote address. Useful for
               remote addr valve. (mturk)

        fix    Fix that worker not used, when stopped flag is
               true. (pero)

        update Add loadbalance default worker secret attribute to
               the documentation (pero)

Changes between 1.2.10 and 1.2.11

    Native
        fix    Backport SC_M_JK_STORED from JK2 for passing
               arbitrary methods instead failing the request.
               (mturk)

        fix    Added 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 True and complete traffic to worker is
               stopped. Also update the Ant JkStatusUpdateTask at
               Tomcat 5.5.10 release. Only usefull in a replicated
               session cluster.(pero)

        update Added worker maintain function that will maintain
               all the workers instead just the current one. This
               enables to recycle the connections on all workers.
               (mturk)

        update Use shutdown when recycling connections instead
               hard breaking the socket. (mturk)

        update Add unique directives checking. The directives if
               unique are now overwritten instead concatenated.
               (mturk)

        update Allow 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)

Changes between 1.2.9 and 1.2.10

    Native
        update Set default shared memory to 64K instead 1M.
               (mturk)

        fix    Do not mark the worker in error state if headers
               are larger then AJP13 limit. (mturk)

        update On Series 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)

        update Added 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

    Native
        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

    Native
        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)

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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