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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. Retrieve default request id from mod_unique_id. It can also be taken from an arbitrary environment variable by configuring "JkRequestIdIndicator".
The Tomcat redirector requires three entities: isapi_redirect.dll - The IIS ISAPI redirector plugin, either obtain a pre-built DLL or build it yourself (see the build section). workers.properties - A file that describes the host(s) and port(s) used by the workers (Tomcat processes). A sample workers.properties can be found under the conf directory. uriworkermap.properties - A file that maps URL-Pa
Tomcat 5.5 uses the Jasper 2 JSP Engine to implement the JavaServer Pages 2.0 specification. Jasper 2 has been redesigned to significantly improve performance over the original Jasper. In addition to general code improvements the following changes were made: JSP Custom Tag Pooling - The java objects instantiated for JSP Custom Tags can now be pooled and reused. This significantly boosts the perfor
The Apache Tomcat Connector - Generic HowToTimeouts HowTo Setting communication timeouts is very important to improve the communication process. They help to detect problems and stabilize a distributed system. JK can use several different timeout types, which can be individually configured. For historical reasons, all of them are disabled by default. This HowTo explains their use and gives hints h
Most of the directives are allowed once in the global part of the Apache HTTP Server configuration and once in every <VirtualHost> elements. Exceptions from this rule are explicitly listed in the table below. Most values are inherited from the main server to the virtual hosts. Since version 1.2.20 they can be overwritten in the virtual hosts. Exceptions from this rule are again explicitly listed i
Tomcat 6 provides a JNDI InitialContext implementation instance for each web application running under it, in a manner that is compatible with those provided by a Java2 Enterprise Edition application server. The J2EE standard provides a standard set of elements in the /WEB-INF/web.xml file to reference/define resources. See the following Specifications for more information about programming APIs f
Links Docs HomeConfig Ref. HomeTop Level Elements ServerServiceExecutors ExecutorConnectors HTTPAJPContainers ContextEngineHostClusterNested Components Global ResourcesListenersLoaderManagerRealmResourcesValveCluster Elements ClusterManagerChannelChannel/MembershipChannel/SenderChannel/ReceiverChannel/InterceptorValveDeployerClusterListenerweb.xml FilterOther System properties The description belo
The original document was written by Dan Milstein, danmil@shore.net on December 2000. The present document is generated out of an xml file to allow a more easy integration in the Tomcat documentation. This describes the Apache JServ Protocol version 1.3 (hereafter ajp13). There is, apparently, no current documentation of how the protocol works. This document is an attempt to remedy that, in order
JNDI Datasource configuration is covered extensively in the JNDI-Resources-HOWTO. However, feedback from tomcat-user has shown that specifics for individual configurations can be rather tricky. Here then are some example configurations that have been posted to tomcat-user for popular databases and some general tips for db usage. You should be aware that since these notes are derived from configura
<H2> Frame Alert</H2> <P> This document is designed to be viewed using the frames feature. If you see this message, you are using a non-frame-capable web client. <BR> Link to<A HREF="overview-summary.html">Non-frame version.</A>
Links Docs HomeConfig Ref. HomeTop Level Elements ServerServiceExecutors ExecutorConnectors HTTPAJPContainers ContextEngineHostClusterNested Components Global ResourcesListenersLoaderManagerRealmResourcesValveCluster Elements ClusterManagerChannelChannel/MembershipChannel/SenderChannel/ReceiverChannel/InterceptorValveDeployerClusterListenerweb.xml FilterOther System properties The HTTP Connector e
We suggest the following location for your download: https://dlcdn.apache.org/ Alternate download locations are suggested below. It is essential that you verify the integrity of the downloaded file using the PGP signature ( .asc file) or a hash ( .md5 or .sha* file). HTTP ¶ https://dlcdn.apache.org/ Backup Sites ¶ https://dlcdn.apache.org/ Verify the integrity of the files ¶ It is essential that y
The characteristics of each of these class loaders, including the source of classes and resources that they make visible, are discussed in detail in the following section. As indicated in the diagram above, Tomcat 5 creates the following class loaders as it is initialized: Bootstrap - This class loader contains the basic runtime classes provided by the Java Virtual Machine, plus any classes from J
This is the top-level entry point of the documentation bundle for the Apache Tomcat Servlet/JSP container. Apache Tomcat version 6.0 implements the Servlet 2.5 and JavaServer Pages 2.1 specifications from the Java Community Process, and includes many additional features that make it a useful platform for developing and deploying web applications and web services. Select one of the links from the n
The Apache Tomcat Connector - Generic HowToQuick Start HowTo This document describes the configuration files used by JK on the Web Server side for the 'impatients': workers.properties is a mandatory file used by the webserver and which is the same for all JK implementations (Apache/IIS/NES). web server add-ons to be set on the webserver side. We'll give here minimum servers configuration and an e
A Tomcat worker is a Tomcat instance that is waiting to execute servlets or any other content on behalf of some web server. For example, we can have a web server such as the Apache HTTP Server forwarding servlet requests to a Tomcat process (the worker) running behind it. The scenario described above is a very simple one; in fact one can configure multiple Tomcat workers to serve servlets on behal
The AJP Connector element represents a Connector component that communicates with a web connector via the AJP protocol. This is used for cases where you wish to invisibly integrate Tomcat 5 into an existing (or new) Apache installation, and you want Apache to handle the static content contained in the web application, and/or utilize Apache's SSL processing. This connector supports load balancing w
This document explains how to connect Tomcat to the popular open source web server, Apache HTTP Server. You can use the connection module mod_jk with any supported version of Apache and any supported version of Tomcat. It is recommended that you also read the Workers HowTo document to learn how to setup the working entities between your web server and Tomcat Engines. For more detailed configuratio
With usage of APR or NIO APIs as the basis of its connectors, Tomcat is able to provide a number of extensions over the regular blocking IO as provided with support for the Servlet API. IMPORTANT NOTE: Usage of these features requires using the APR or NIO HTTP connectors. The classic java.io HTTP connector and the AJP connectors do not support them. Comet support allows a servlet to process IO asy
Like many server applications, Tomcat installs a variety of class loaders (that is, classes that implement java.lang.ClassLoader) to allow different portions of the container, and the web applications running on the container, to have access to different repositories of available classes and resources. This mechanism is used to provide the functionality defined in the Servlet Specification, versio
When updating from one major Apache Tomcat® version a newer one, please make sure that the JVM that is installed on your system supports at least the required Java version. While it is possible that older versions of Tomcat may not be compatible with newer JVMs, all the currently supported Apache Tomcat versions (8.5.x, 9.0.x, 10.1.x and 11.0.x) are known to run correctly on Java 17 JVMs. When mig
Please note that, except in rare circumstances, binary patches are not produced for individual vulnerabilities. To obtain the binary fix for a particular vulnerability you should upgrade to an Apache Tomcat® version where that vulnerability has been fixed. Source patches, usually in the form of references to commits, may be provided in either in a vulnerability announcement and/or the vulnerabilit
Tomcat 5.5 uses Commons Logging throughout its internal code allowing the developer to choose a logging configuration that suits their needs, e.g java.util.logging or Log4J. Commons Logging provides Tomcat the ability to log hierarchically across various log levels without needing to rely on a particular logging implementation. An important consequence for Tomcat 5.5 is that the <Logger> element f
Each version of Tomcat is supported for any stable Java release that meets the requirements of the final column in the table above. Tomcat should also work on any Java early access build that meets the requirements of the final column in the table above. For example, users were successfully running Tomcat 8 on Java 8 many months before the first stable Java 8 release. However, users of early acces
This is the top-level entry point of the documentation bundle for the Apache Tomcat Servlet/JSP container. Apache Tomcat version 5.5 implements the Servlet 2.4 and JavaServer Pages 2.0 specifications from the Java Community Process, and includes many additional features that make it a useful platform for developing and deploying web applications and web services. Select one of the links from the n
This value represents the delay in seconds between the invocation of the backgroundProcess method on this context and its child containers, including all wrappers. Child containers will not be invoked if their delay value is not negative (which would mean they are using their own processing thread). Setting this to a positive value will cause a thread to be spawn. After waiting the specified amoun
Use the links below to download the Apache Tomcat® Connectors software from one of our mirrors. You must verify the integrity of the downloaded files using signatures downloaded from our main distribution directory. Only current recommended releases are available on the main distribution site and its mirrors. Older releases and the historical mod_jk2 are available from the archive download site. Y
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