Apache Tomcat 9 (9.0.0.M21)

General

Allow to exclude JUnit test classes using the build property test.exclude and document the property in BUILDING.txt. (rjung)

Catalina

Review those places where Tomcat re-encodes a URI or URI component and ensure that that correct encoding (path differs from query string) is applied and that the encoding is applied consistently. (markt)
Avoid a NullPointerException when reading attributes for a initialised HTTP connector where TLS is enabled. (markt)
Always quote the hostName of an SSLHostConfig element when using it as part of the JMX object name to avoid errors that prevent the associated TLS connector from starting if a wild card hostName is configured (because * is a reserved character for JMX object names). (markt)
Update the default URIEncoding for a Connector to UTF-8 as required by the Servlet 4.0 specification. (markt)
Start to switch to using Charset rather than String to store encoding configuration settings to reduce the number of places the associated Charset needs to be looked up. (markt)
Use a more reliable mechanism for the DefaultServlet when determining if the current request is for custom error page or not. (markt)
Ensure that when the Default or WebDAV servlets process an error dispatch that the error resource is processed via the doGet() method irrespective of the method used for the original request that triggered the error. (markt)
If a static custom error page is specified that does not exist or cannot be read, ensure that the intended error status is returned rather than a 404 or 403. (markt)
When the WebDAV servlet is configured and an error dispatch is made to a custom error page located below WEB-INF, ensure that the target error page is displayed rather than a 404 response. (markt)
Update the Servlet 4.0 implementation to add support for obtaining trailer fields from chunked HTTP requests. (markt)
61047: Add MIME mapping for woff2 fonts in the default web.xml. Patch provided by Justin Williamson. (violetagg)
Correct the logic that selects the encoding to use to decode the query string in the SSIServletExternalResolver so that the useBodyEncodingForURI attribute of the Connector is correctly taken into account. (markt)
Within the Expires filter, make the content type value specified with the ExpiresByType parameter, case insensitive. (markt)

Coyote

When a TrustManager is configured that does not support certificateVerificationDepth only log a warning about that lack of support when certificateVerificationDepth has been explicitly set. (markt)
60970: Extend the fix for large headers to push requests. (markt)
Do not include a Date header in HTTP/2 responses with status codes less than 200. (markt)
When sending an HTTP/2 push promise with the NIO2 connector, the pushed stream ID should only be included with the initial push promise frame and not any subsequent continuation frames. (markt)

Jasper

When no BOM is present and an encoding is detected, do not skip the bytes used to detect the encoding since they are not part of a BOM. (markt)
61057: Update to Eclipse JDT Compiler 4.6.3. (violetagg)
61065: Ensure that once the class is resolved by javax.el.ImportHandler#resolveClass it will be cached with the proper name. (violetagg)

WebSocket

Introduce new API o.a.tomcat.websocket.WsSession#suspend/ o.a.tomcat.websocket.WsSession#resume that can be used to suspend/resume reading of the incoming messages. (violetagg)
61003: Ensure the flags for reading/writing in o.a.t.websocket.AsyncChannelWrapperSecure are correctly reset even if some exceptions occurred during processing. (markt/violetagg)

Web Applications

Add documents for maxIdleTime attribute to Channel Receiver docs. (kfujino)

Tribes

Add features to get the statistics of the thread pool of the Receiver component and MessageDispatchInterceptor. These statistics information can be acquired via JMX. (kfujino)
Add maxIdleTime attribute to NioReceiverMBean in order to expose to JMX. (kfujino)
Add JMX support for Channel Interceptors.　The Interceptors that implement jmx support are TcpFailureDetector, ThroughputInterceptor, TcpPingInterceptor, StaticMembershipInterceptor, MessageDispatchInterceptor and DomainFilterInterceptor. (kfujino)

Other

Modify the Ant build script used to publish to a Maven repository so that it no longer requires artifacts to be GPG signed. This is make it possible for the CI system to upload snapshot builds to the ASF Maven repository. (markt)

Catalina

Update the Servlet 4.0 API implementation to reflect the change in method name from getPushBuilder() to newPushBuilder(). (markt)
Correct various edge cases in the new HTTP Host header validation parser. Patch provided by Katya Todorova. (martk)
Correct a regression in the X to comma refactoring that broke JMX operations that take parameters. (markt)
Avoid a NullPointerException when reading attributes for a running HTTP connector where TLS is not enabled. (markt)
47214: Refactor code so that explicitly referenced inner classes are given explicit names rather than being anonymous. (markt)
59825: Log a message that lists the components in the processing chain that do not support async processing when a call to ServletRequest.startAsync() fails. (markt)
60940: Improve the handling of the META-INF/ and META-INF/MANIFEST.MF entries for Jar files located in /WEB-INF/lib when running a web application from a packed WAR file. (markt)
Pre-load the ExceptionUtils class. Since the class is used extensively in error handling, it is prudent to pre-load it to avoid any failure to load this class masking the true problem during error handling. (markt)
Avoid potential NullPointerExceptions related to access logging during shutdown, some of which have been observed when running the unit tests. (markt)
When there is no javax.servlet.WriteListener registered then a call to javax.servlet.ServletOutputStream#isReady will return false instead of throwing IllegalStateException. (violetagg)
When there is no javax.servlet.ReadListener registered then a call to javax.servlet.ServletInputStream#isReady will return false instead of throwing IllegalStateException. (violetagg)

Coyote

Align cipher configuration parsing with current OpenSSL master. (markt)
60970: Fix infinite loop if application tries to write a large header to the response when using HTTP/2. (markt)

Jasper

47214: Refactor code so that explicitly referenced inner classes are given explicit names rather than being anonymous. (markt)
60925: Improve the handling of access to properties defined by interfaces when a BeanELResolver is used under a SecurityManager. (markt)

Tribes

Add JMX support for Tribes components. (kfujino)

jdbc-pool

Refactor the creating a constructor for a proxy class to reduce duplicate code. (kfujino)
In StatementFacade, the method call on the statements that have been closed throw SQLException rather than NullPointerException. (kfujino)

Other

60932: Correctly escape single quotes when used in i18n messages. Based on a patch by Michael Osipov. (markt)
Review i18n property files, remove unnecessary escaping and consistently use [...] to delimit inserted values. (markt)
Update the custom Ant task that integrates with the Symantec code signing service to use the now mandatory 2-factor authentication. (markt)
Refactoring in preparation for Java 9. Refactor to avoid using some methods that will be deprecated in Java 9 onwards. (markt)

Catalina

54618: Add support to the HttpHeaderSecurityFilter for the HSTS preload parameter. (markt)
Correct a bug in the implementation of the Servlet 4.0 feature that allows specifying a default request and/or response character encoding per web application. null values passed via the programmatic interface no longer trigger a NullPointerException. (markt)
Correct a potential exception during shutdown when one or more Containers are configured with a value of 1 for startStopThreads. (markt)
60853: Expose the SSLHostConfig and SSLHostConfigCertificate objects via JMX. (markt)
60876: Ensure that Set-Cookie headers generated by the Rfc6265CookieProcessor are aligned with the specification. Patch provided by Jim Griswold. (markt)
60882: Fix a NullPointerException when obtaining a RequestDispatcher for a request that will not have any pathInfo associated with it. This was a regression in the changes in 9.0.0.M18 for the Servlet 4.0 API changes. (markt)
Align PushBuilder API with changes from the Servlet expert group. (markt)
Align web.xml parsing rules with changes from the Servlet expert group for <request-character-encoding> and <response-character-encoding>. (markt)
Refactor the various implementations of X to comma separated list to a single utility class and update the code to use the new utility class. (markt)
60911: Ensure NPE will not be thrown when looking for SSL session ID. Based on a patch by Didier Gutacker. (violetagg)

Coyote

Add async based IO groundwork for HTTP/2. (remm)
Fix HTTP/2 incorrect input unblocking on EOF. (remm)
Close the connection sooner if an event occurs for a current connection that is not consistent with the current state of that connection. (markt)
Speed up shutdown when using multiple acceptor threads by ensuring that the code that unlocks the acceptor threads correctly handles the case where there are multiple threads. (markt)
60851: Add application/xml and application/json to the default list of compressible MIME types. Patch by Michael Osipov. (markt)
60852: Correctly spell compressible when used in configuration attributes and internal code. Based on a patch by Michael Osipov. (markt)
60900: Avoid a NullPointerException in the APR Poller if a connection is closed at the same time as new data arrives on that connection. (markt)
Improve HPACK specification compliance by fixing some test failures reported by the h2spec tool written by Moto Ishizawa. (markt)
Improve HTTP/2 specification compliance by fixing some test failures reported by the h2spec tool written by Moto Ishizawa. (markt)
60918: Fix sendfile processing error that could lead to subsequent requests experiencing an IllegalStateException. (markt)
Improve sendfile handling when requests are pipelined. (markt)

Jasper

60844: Correctly handle the error when fewer parameter values than required by the method are used to invoke an EL method expression. Patch provided by Daniel Gray. (markt)

jdbc-pool

60764: Implement equals() and hashCode() in the StatementFacade in order to enable these methods to be called on the closed statements if any statement proxy is set. This behavior can be changed with useStatementFacade attribute. (kfujino)

Other

Refactor the build script and the NSIS installer script so that either NSIS 2.x or NSIS 3.x can be used to build the installer. This is primarily to re-enable building the installer on the Linux based CI system where the combination of NSIS 3.x and wine leads to failed installer builds. (markt)

Catalina

60469: Refactor RealmBase for better code re-use when implementing Realms that use a custom Principal. (markt)
60490: Various formatting and layout improvements for the ErrorReportValve. Patch provided by Michael Osipov. (markt)
60573: Remove the reason phrase when sending a 100 response status for consistency with other response status lines. Patch provided by Michael Osipov. (markt)
60596: Improve performance of DefaultServlet when sendfile feature is disabled on connector. (kkolinko)
Make it easier for sub-classes of Tomcat to modify the default web.xml settings by over-riding getDefaultWebXmlListener(). Patch provided by Aaron Anderson. (markt)
Reduce the contention in the default InstanceManager implementation when multiple threads are managing objects and need to reference the annotation cache. (markt)
60623: When startStopThreads is 1 (or a special value that is equivalent to 1) then rather than using an ExecutorService to start the children of the current component, the children will be started on the current thread. (markt)
60674: Remove final marker from CorsFilter to enable sub-classing. (markt)
60683: Security manager failure causing NPEs when doing IO on some JVMs. (csutherl)
60688: Update the internal fork of Apache Commons BCEL to r1782855 to add early access Java 9 support to the annotation scanning code. (markt)
60694: Prevent NPE during authentication when no JASPIC AuthConfigFactory is available. (markt)
60697: When HTTP TRACE requests are disabled on the Connector, ensure that the HTTP OPTIONS response from custom servlets does not include TRACE in the returned Allow header. (markt)
60718: Improve error handling for asynchronous processing and correct a number of cases where the requestDestroyed() event was not being fired and an entry wasn't being made in the access logs. (markt)
60720: Replace "WWW-Authenticate" literal with static final AUTH_HEADER_NAME in SpnegoAuthenticator. Patch provided by Michael Osipov. (violetagg)
The default JASPIC AuthConfigFactory now correctly notifies registered RegistrationListeners when a new AuthConfigProvider is registered. (markt)
Improve the performance of AuthenticatorBase when there is no JASPIC configuration available. (violetagg)
When HTTP TRACE requests are disabled on the Connector, ensure that the HTTP OPTIONS response from the WebDAV servlet does not include TRACE in the returned Allow header. (markt)
60722: Take account of the dispatchersUseEncodedPaths setting on the current Context when generating paths for dispatches triggered by AsyncContext.dispatch(). (markt)
60728: Make the separator Tomcat uses in the Tomcat specific war:file:... URL protocol customizable via a system property. The separator is equivalent to the use of the ! character in jar:file:... URLs. The default separator of * remains unchanged. (markt)
Update the Servlet 4.0 API implementation to align with the latest proposals from the Servlet 4.0 expert group. This includes updates to the new Servlet mapping API, new methods on the ServletContext to make the available API more equivalent to the deployment descriptor, updates to the HTTP push API and the ability to set default request and response character encoding per web application. Note that the Servlet 4.0 API is still a work in progress and further changes are likely. (markt)
60798: Correct a bug in the handling of JARs in unpacked WARs that meant multiple attempts to read the same entry from a JAR in succession would fail for the second and subsequent attempts. (markt)
60808: Ensure that the Map returned by ServletRequest.getParameterMap() is fully immutable. Based on a patch provided by woosan. (markt)
60824: Correctly cache the Subject in the session - if there is a session - when running under a SecurityManager. Patch provided by Jan Engehausen. (markt)
Ensure request and response facades are used when firing application listeners. (markt/remm)

Coyote

Improve handling of case when an HTTP/2 client sends more data that is subject to flow control than the current window size allows. (markt)
Improve NIO2 look-ahead parsing of TLS client hello for SNI with large client hello messages. (markt)
Enable ALPN and also, therefore, HTTP/2 for the NIO and NIO2 HTTP connectors when using the JSSE implementation for TLS when running on Java 9. (markt)
Restore Java 9 direct byte buffer compatibility. (remm)
59807: Provide a better error message when there is no SSLHostConfig defined with a hostName that matches the defaultSSLHostConfigName for the associated Connector. (markt)
60627: Modify the Rfc6265CookieProcessor so that in addition to cookie headers that start with an explicit RFC 2109 $Version=1, cookies that start with $Version=0 are also parsed as RFC 2109 cookies. (markt)
Include the value of SslHostConfig.truststoreAlgorithm when warning that the algorithm does not support the certificateVerificationDepth configuration option. (markt)
Ensure that executor thread pools used with connectors pre-start the configured minimum number of idle threads. (markt)
60716: Add a new JSSE specific attribute, revocationEnabled, to SSLHostConfig to permit JSSE provider revocation checks to be enabled when no certificateRevocationListFile has been configured. The expectation is that configuration will be performed via a JSSE provider specific mechanisms. (markt)
Modify the cookie header generated by the Rfc6265CookieProcessor so it always sends an Expires attribute as well as a Max-Age attribute to avoid problems with Microsoft browsers that do not support the Max-Age attribute. (markt)
60761: Expose a protected getter and setter for NioEndpoint.stopLatch to make the class easier to extend. (markt)
Prevent blocking reads after a stream exception occurs with HTTP/2. (remm)

Jasper

Follow up to the fix for 58178. When creating the ELContext for a tag file, ensure that any registered ELContextListeners are fired. (markt)
Refactor code generated for JSPs to reduce the size of the code required for tags. (markt)
Improve the error handling for simple tags to ensure that the tag is released and destroyed once used. (remm, violetagg)
60769: Correct a regression in the XML encoding detection refactoring carried out for 9.0.0.M16 that incorrectly always used the detected BOM encoding in preference to any encoding specified in the prolog. (markt)

Cluster

Make the accessTimeout configurable in BackupManager and ClusterSingleSignOn. The accessTimeout is used as a timeout period for PING in replication map. (kfujino)
60806: To avoid ClassNotFoundException, make sure that the web application class loader is passed to ReplicatedContext. (kfujino)

WebSocket

60617: Correctly create a CONNECT request when establishing a WebSocket connection via a proxy. Patch provided by Svetlin Zarev. (markt)

Tribes

Add log message that PING message has received beyond the timeout period. (kfujino)
When a PING message that beyond the time-out period has been received, make sure that valid member is added to the map membership. (kfujino)
Ensure that NoRpcChannelReply messages are not received on RpcCallback. (kfujino)

Web Applications

Add Specification and Javadoc references for JASPIC to the Docs application. (csutherl)

Other

Spelling corrections provided by Josh Soref. (violetagg)
Remove local definition of web service annotations since these are provided by the JRE. (markt)
Update the packaged version of the Tomcat Native Library to 1.2.12 to pick up the latest Windows binaries built with OpenSSL 1.0.2k. (violetagg)
60784: Update all unit tests that test the HTTP status line to check for the required space after the status code. Patch provided by Michael Osipov. (markt)

Catalina

60620: Extend the JreMemoryLeakPreventionListener to provide protection against ForkJoinPool.commonPool() related memory leaks. (markt)

Coyote

Ensure UpgradeProcessor instances associated with closed connections are removed from the map of current connections to Processors. (markt)
Remove a workaround for a problem previously reported with WebSocket, TLS and APR that treated some error conditions as not errors. The original problem cannot be reproduced with the current code and the work-around is now causing problems. (markt)

Jasper

60497: Follow up fix using a better variable name for the tag reuse flag. (remm)
Revert use of try/finally for simple tags. (remm)

WebSocket

Prevent potential processing loop on unexpected WebSocket connection closure. (markt)

jdbc-pool

Enable reset the statistics without restarting the pool. (kfujino)

Other

Update the NSIS Installer used to build the Windows installer to version 3.01. (markt)
Spelling corrections provided by Josh Soref. (violetagg)

Catalina

53602: Add HTTP status code 451 (RFC 7725) to the list of HTTP status codes recognised by the ErrorReportValve. (markt)
60446: Handle the case where the stored user credential uses a different key length than the length currently configured for the CredentialHandler. Based on a patch by Niklas Holm. (markt)
Update the warnings that reference required options for running on Java 9 to use the latest syntax for those options. (markt)
60513: Fix thread safety issue with RMI cleanup code. (remm)

Coyote

Expand the search process for a server certificate when OpenSSL is used with a JSSE connector and an explicit alias has not been configured. (markt)
Extract the common Acceptor code from each Endpoint into a new Acceptor class that is used by all Endpoints. (markt)
60450: Improve the selection algorithm for the default trust store type for a TLS Virtual Host. In particular, don't use PKCS12 as a default trust store type. Better document how the default trust store type is selected for a TLS virtual host. (markt)
60451: Correctly handle HTTP/2 header values that contain characters with unicode code points in the range 128 to 255. Reject with a clear error message HTTP/2 header values that contain characters with unicode code points above 255. (markt)
Improve the logic that selects an address to use to unlock the Acceptor to take account of platforms what do not listen on all local addresses when configured with an address of 0.0.0.0 or ::. (markt)
Correct a regression in the refactoring to make wider use of ByteBuffer that caused an intermittent failure in the unit tests. (markt)
60482: HTTP/2 shouldn't do URL decoding on the query string. (remm)
Fix an HTTP/2 compression error. Once a new size has been agreed for the dynamic HPACK table, the next header block must begin with a dynamic table update. (markt)
60508: Set request start time for HTTP/2. (remm)
The default output buffer size for AJP connectors is now based on the configured AJP packet size rather than the minimum permitted AJP packet size. (markt)

Jasper

Implement a simpler JSP file encoding detector that delegates XML prolog encoding detection to the JRE rather than using a custom XML parser. (markt)
60497: Restore previous tag reuse behavior following the use of try/finally. (remm)
Improve the error handling for simple tags to ensure that the tag is released and destroyed once used. (remm)

WebSocket

Correctly handle blocking WebSocket writes when the write times out just before the write is attempted. (markt)

Web Applications

60344: Add a note to BUILDING.txt regarding using the source bundle with the correct line endings. (markt)
60467: remove problematic characters from XML documentation. Based upon a patch by Michael Osipov. (schultz)
In the documentation web application, be explicit that clustering requires a secure network for all of the cluster network traffic. (markt)
Update the ASF logos to the new versions.
60468: Correct the format of the sample ISO-8601 date used to report the build date for the documentation. Patch provided by Michael Osipov. (markt)

Other

Update the ASF logos used in the Apache Tomcat installer for Windows to use the new versions.

Other

Increment version due a local build configuration error with 9.0.0.M14 that wasn't caught until after digital signing had been completed Signing requires unique names so a new tag was required. (markt)

Catalina

60202: Add an available flag to realms, to indicate the state, or the realm backend. Update lockout realm to only register auth failures if the realm is available. (remm)
60340: Readability improvements for CSS used in DefaultServlet and ErrorReportValve. Patch provided by Michael Osipov. (violetagg)
60351: Delay creating META-INF/war-tracker file until after the WAR has been expanded to address the case where the Tomcat process terminates during the expansion. (markt)
Correctly generate URLs for resources located inside JARs that are themselves located inside a packed WAR file. (markt)
Correctly handle the configClass attribute of a Host when embedding Tomcat. (markt)
60368: Stop creating a default connector on start in embedded mode. (remm)
60379: Dispose of the GSS credential once it is no longer required. Patch provided by Michael Osipov. (markt)
60380: Ensure that a call to HttpServletRequest#logout() triggers a call to TomcatPrincipal#logout(). Based on a patch by Michael Osipov. (markt)
60381: Provide a standard toString() implementation for components that implement Contained. (markt)
60387: Correct the javadoc for o.a.catalina.AccessLog.setRequestAttributesEnabled. The default value is different for the different implementations. (violetagg)
60393: Use consistent parameter naming in implementations of Realm#authenticate(GSSContext, boolean). (markt)
Refactor the org.apache.naming package to reduce duplicate code. Duplicate code identified by the Simian tool. (markt)
Refactor the implementations of HttpServletRequest#getRequestURL() to reduce duplicate code. Duplicate code identified by the Simian tool. (markt)
Refactor Catalina interfaces to make wider use of the Contained interface and reduce duplication. (markt)
Remove the getName() method from RealmBase along with the various constants used by the sub-classes to store the return value. (markt)
60395: Log when an Authenticator passes an incomplete GSSContext to a Realm since it indicates a bug in the Authenticator. Patch provided by Michael Osipov. (markt)
60400: When expanding the buffer used for reading the request body, ensure the read position will be restored to the original one. (violetagg)
Refactor the MBean implementations for the internal Tomcat components to reduce code duplication. (markt)
60410: Ensure that multiple calls to JarInputStreamWrapper#close() do not incorrectly trigger the closure of the underlying JAR or WAR file. (markt)
60411: Implement support in the RewriteValve for symbolic names to specify the redirect code to use when returning a redirect response to the user agent. Patch provided by Michael Osipov. (markt)
60413: In the RewriteValve write empty capture groups as the empty string rather than as "null" when generating the re-written URL. Based on a patch by Michael Osipov. (markt)

Coyote

60372: Ensure the response headers' buffer limit is reset to the capacity of this buffer when IOException occurs while writing the headers to the socket. (violetagg)
Ensure that the availability of configured upgrade protocols that require ALPN is correctly reported during Tomcat start. (markt)
60386: Implement a more sophisticated pruning algorithm for removing closed streams from the priority tree to ensure that the tree does not grow too large. (markt)
60409: When unable to complete sendfile request, ensure the Processor will be added to the cache only once. (markt/violetagg)
Ensure that the endpoint is able to unlock the acceptor thread during shutdown if the endpoint is configured to listen to any local address of a specific type such as 0.0.0.0 or ::. (markt)
Add a new configuration option, ipv6v6only to the APR connectors that allows them to be configure to only accept IPv6 connections when configured with an IPv6 address rather than the default which is to accept IPv4 connections as well if the operating system uses a dual network stack. (markt)
Improve the logic that unlocks the acceptor thread so a better choice is made for the address to connect to when a connector is configured for any local port. This reduces the likelihood of the unlock failing. (markt)
60436: Avoid a potential NPE when processing async timeouts. (markt)
Reduce the window in which an async request that has just started processing on a container thread remains eligible for an async timeout. (markt)

Jasper

60431: Improve handling of varargs in UEL expressions. Based on a patch by Ben Wolfe. (markt)

Web applications

Correct a typo in Host Configuration Reference. Issue reported via comments.apache.org. (violetagg)
60412: Add information on the comment syntax for the RewriteValve configuration. (markt)

Tribes

Reduce the warning logs for a message received from a different domain in order to avoid excessive log outputs. (kfujino)

WebSocket

60437: Avoid possible handshake overflows in the websocket client. (remm)

jdbc-pool

58816: Implement the statistics of jdbc-pool. The stats infos are borrowedCount, returnedCount, createdCount, releasedCount, reconnectedCount, releasedIdleCount and removeAbandonedCount. (kfujino)
60194: If validationQuery is not specified, connection validation is done by calling the isValid() method. (kfujino)
60398: Fix testcase of TestSlowQueryReport. (kfujino)

Other

Allow customization of service.bat, such as heap memory size, service startup mode and JVM args. Patch provided by isapir via Github. (violetagg)
60366: Change catalina.bat to use directly LOGGING_MANAGER and LOGGING_CONFIG variables in order to configure logging, instead of modifying JAVA_OPTS. Patch provided by Petter Isberg. (violetagg)
60383: JASPIC API is added as a dependency to the org.apache.tomcat:tomcat-catalina maven artifact. (violetagg)
Update the comments associated with the TLS Connector examples in server.xml. (markt)
New property is added test.verbose in order to control whether the output of the tests is displayed on the console or not. Patch provided by Emmanuel Bourg. (violetagg)
TestOpenSSLCipherConfigurationParser.testSpecification - if there are test failures, provide more detailed information. Patch provided by Emmanuel Bourg. (violetagg)

Coyote

Check that threadPriority values used in AbstractProtocol are valid. (fschumacher)

Catalina

When creating a new Connector via JMX, ensure that both HTTP/1.1 and AJP/1.3 connectors can be created. (markt)
Reduce multiple error messages when Connector fails to instantiate the associated ProtocolHandler. (markt)
60152: Provide an option for Connector Lifecycle exceptions to be re-thrown rather than logged. This is controlled by the new throwOnFailure attribute of the Connector. (markt)
Include the Context name in the log message when an item cannot be added to the cache. (markt)
Exclude JAR files in /WEB-INF/lib from the static resource cache. (markt)
When calling getResourceAsStream() on a directory, ensure that null is returned. (markt)
60161: Allow creating subcategories of the container logger, and use it for the rewrite valve. (remm)
Correctly test for control characters when reading the provided shutdown password. (markt)
60297: Simplify connector creation in embedded mode. (remm)
Refactor creation of containers in embedded mode for more consistency and flexibility. (remm)
Log a warning if running on Java 9 with the ThreadLocal memory leak detection enabled (the default) but without the command line option it now requires. (markt)
When a Connector is configured to use an executor, ensure that the StoreConfig component includes the executor name when writing the Connector configuration. (markt)
When configuring the JMX remote listener, specify the allowed types for the credentials. (markt)

Coyote

Correct the HPACK header table size configuration that transposed the client and server table sizes when creating the encoder and decoder. (markt)
Review HTTP/2 implementation removing unused code, reducing visibility where possible and using final where appropriate. (markt)
Don't continue to process an HTTP/2 stream if it is reset during header parsing. (markt)
HTTP/2 uses separate headers for each Cookie. As required by RFC 7540, merge these into a single Cookie header before processing continues. (markt)
Align the HTTP/2 implementation with the HTTP/1.1 implementation and return a 500 response when an unhandled exception occurs during request processing. (markt)
Correct the HTTP header parser so that DEL is not treated as a valid token character. (markt)
Add checks around the handling of HTTP/2 pseudo headers. (markt)
Add support for trailer headers to the HTTP/2 implementation. (markt)
60232: When processing headers for an HTTP/2 stream, ensure that the read buffer is large enough for the header being processed. (markt)
Add configuration options to the HTTP/2 implementation to control the maximum number of headers allowed, the maximum size of headers allowed, the maximum number of trailer headers allowed, the maximum size of trailer headers allowed and the maximum number of cookies allowed. (markt)
Correctly differentiate between sending and receiving a reset frame when tracking the state of an HTTP/2 stream. (markt)
Remove the undocumented support for using the old Connector attribute names backlog, soLinger and soTimeout that were renamed several major versions ago. (markt)
60319: When using an Executor, disconnect it from the Connector attributes maxThreads, minSpareThreads and threadPriority to enable the configuration settings to be consistently reported. These Connector attributes will be reported as -1 when an Executor is in use. The values used by the executor may be set and obtained via the Executor. (markt)
If an I/O error occurs during async processing on a non-container thread, ensure that the onError() event is triggered. (markt)
Improve detection of I/O errors during async processing on non-container threads and trigger async error handling when they are detected. (markt)
Add additional checks for valid characters to the HTTP request line parsing so invalid request lines are rejected sooner. (markt)

Jasper

Update to the Eclipse JDT Compiler 4.6.1. (markt)

Web applications

Add HTTP/2 configuration information to the documentation web application. (markt)
Fix default value of validationInterval attribute in jdbc-pool. (kfujino)
Correct a typo in CGI How-To. Issue reported via comments.apache.org. (violetagg)

Tribes

When the proxy node sends a backup retrieve message, ensure that using the channelSendOptions that has been set rather than the default channelSendOptions. (kfujino)

Other

Add the JASPIC API jar to the Maven Central publication script. (markt)
Remove classes from tomcat-util-scan.jar that are duplicates of those in tomcat-util.jar. (markt)
Update the NSIS Installer used to build the Windows installer to version 3.0. (markt)

Catalina

59961: Add an option to the StandardJarScanner to control whether or not JAR Manifests are scanned for additional class path entries. (markt)
60013: Refactor the previous fix to align the behaviour of the Rewrite Valve with mod_rewrite. As part of this, provide an implementation for the B and NE flags and improve the handling for the QSA flag. Includes multiple test cases by Santhana Preethiand a patch by Tiago Oliveira. (markt)
60087: Refactor the web resources handling to use the Tomcat specific war:file:... URL protocol to refer to WAR files and their contents rather than the standard jar:file:... form since some components of the JRE, such as JAR verification, give unexpected results when the standard form is used. A side-effect of the refactoring is that when using packed WARs, it is now possible to reference a WAR and/or specific JARs within a WAR in the security policy file used when running under a SecurityManager. (markt)
60116: Fix a problem with the rewrite valve that caused back references evaluated in conditions to be forced to lower case when using the NC flag. (markt)
Ensure Digester.useContextClassLoader is considered in case the class loader is used. (violetagg)
60117: Ensure that the name of LogLevel is localized when using OneLineFormatter. Patch provided by Tatsuya Bessho. (kfujino)
60138: Fix the SSLHostConfig so that the protocols attribute is limited to the protocols supported by the current JSSE implementation rather than the default protocols used by the implementation. (markt)
60146: Improve performance for resource retrieval by making calls to WebResource.getInputStream() trigger caching if the resource is small enough. Patch provided by mohitchugh. (markt)
60151: Improve the exception error messages when a ResourceLink fails to specify the type, specifies an unknown type or specifies the wrong type. (markt)
60167: Ignore empty lines in /etc/passwd files when using the PasswdUserDatabase. (markt)
60170: Exclude the compressed test file index.html.br from RAT analysis. Patch provided by Gavin McDonald. (markt)
When starting web resources, ensure that class resources are only started once. (markt)
Improve the access checks for linked global resources to handle the case where the current class loader is a child of the web application class loader. (markt)
60196: Ensure that the isMandatory flag is correctly set when using JASPIC authentication. (markt)
60199: Log a warning if deserialization issues prevent a session attribute from being loaded. (markt)
60208: When using RFC6265 compliant cookies, the / character should not be allowed in a cookie name since the RFC6265 will drop such cookies as invalid. (markt)
Introduce new methods read(ByteBuffer)/ write(ByteBuffer) in o.a.catalina.connector.CoyoteInputStream/ o.a.catalina.connector.CoyoteOutputStream. (violetagg)

Coyote

Refactor the code that implements the requirement that a call to complete() or dispatch() made from a non-container thread before the container initiated thread that called startAsync() completes must be delayed until the container initiated thread has completed. Rather than implementing this by blocking the non-container thread, extend the internal state machine to track this. This removes the possibility that blocking the non-container thread could trigger a deadlock. (markt)
Fail earlier if the client closes the connection during SNI processing. (markt)
60123: Avoid potential threading issues that could cause excessively large values to be returned for the processing time of a current request. (markt)
60174: Log instances of HeadersTooLargeException during request processing. (markt)
60173: Allow up to 64kB HTTP/2 header table size limit. (remm)
Java 9 compatibility of direct ByteBuffer cleaner. (remm)

Jasper

60101: Remove preloading of the class that was deleted. (violetagg)

Web applications

Expand the documentation for the nested elements within a Resources element to clarify the behaviour of different configuration options with respect to the order in which resources are searched. (markt)
Add an example of using the classesToInitialize attribute of the JreMemoryLeakPreventionListener to the documentation web application. Based on a patch by Cris Berneburg. (markt)
60192: Correct a typo in the status output of the Manager application. Patch provided by Radhakrishna Pemmasani. (markt)

jdbc-pool

Notify jmx when returning the connection that has been marked suspect. (kfujino)
Ensure that the POOL_EMPTY notification has been added to the jmx notification types. (kfujino)
60099: Ensure that use all method arguments as a cache key when using StatementCache. (kfujino)

Other

Update the download location for Objenesis. (violetagg)
60164: Replace log4j-core*.jar with log4j-web*.jar since it is log4j-web*.jar that contains the ServletContainerInitializer. (markt)
Add documentation to the bin/catalina.bat script to remind users that environment variables don't affect the configuration of Tomcat when run as a Windows Service. Based upon a documentation patch by James H.H. Lampert. (schultz)
Update the packaged version of the Tomcat Native Library to 1.2.10 to pick up the latest Windows binaries built with OpenSSL 1.0.2j. (markt)

Catalina

59813: Ensure that circular relations of the Class-Path attribute from JAR manifests will be processed correctly. (violetagg)
Ensure that reading the singleThreadModel attribute of a StandardWrapper via JMX does not trigger initialisation of the associated servlet. With some frameworks this can trigger an unexpected initialisation thread and if initialisation is not thread-safe the initialisation can then fail. (markt)
Compatibility with rewrite from httpd for non existing headers. (jfclere)
By default, treat paths used to obtain a request dispatcher as encoded. This behaviour can be changed per web application via the dispatchersUseEncodedPaths attribute of the Context. (markt)
Provide a mechanism that enables the container to check if a component (typically a web application) has been granted a given permission when running under a SecurityManager without the current execution stack having to have passed through the component. Use this new mechanism to extend SecurityManager protection to the system property replacement feature of the digester. (markt)
When retrieving an object via a ResourceLink, ensure that the object obtained is of the expected type. (markt)
59823: Ensure that JASPIC configuration is taken into account when calling HttpServletRequest.authenticate(). (markt)
59824: Mark the RewriteValve as supporting async processing by default. (markt)
59839: Apply roleSearchAsUser to all nested searches in JNDIRealm. (fschumacher)
59859: Fix resource leak in WebDAV servlet. Based on patch by Coty Sutherland. (fschumacher)
59862: Allow nested jar files scanning to be filtered with the system property tomcat.util.scan.StandardJarScanFilter.jarsToSkip. Patch is provided by Terence Bandoian. (violetagg)
59866: When scanning WEB-INF/classes for annotations, don't scan the contents of WEB-INF/classes/META-INF (if present) since classes will never be loaded from that location. (markt)
59888: Correctly handle tabs and spaces in quoted version one cookies when using the Rfc6265CookieProcessor. (markt)
A number of the JRE memory leaks addressed by the JreMemoryLeakPreventionListener have been fixed in Java 9 so the associated protection is now disabled when running on Java 9 onwards. (markt)
59912: Fix an edge case in input stream handling where an IOException could be thrown when reading a POST body. (markt)
59913: Correct a regression introduced with the support for the Servlet 4 HttpServletRequest.getMapping() API that caused the attributes for forwarded requests to be lost if requested from within a subsequent include. (markt)
59966: Do not start the web application if the error page configuration in web.xml is invalid. (markt)
Switch the CGI servlet to the standard logging mechanism and remove support for the debug attribute. (markt)
60012: Improvements in the log messages. Based on suggestions by Nemo Chen. (violetagg)
Changes to the allowLinking attribute of a StandardRoot instance now invalidate the cache if caching is enabled. (markt)
Add a new initialisation parameter, envHttpHeaders, to the CGI Servlet to mitigate httpoxy (CVE-2016-5388) by default and to provide a mechanism that can be used to mitigate any future, similar issues. (markt)
When adding and removing ResourceLinks dynamically, ensure that the global resource is only visible via the ResourceLinkFactory when it is meant to be. (markt)
60008: When processing CORs requests, treat any origin with a URI scheme of file as a valid origin. (markt)
Improve handling of exceptions during a Lifecycle events triggered by a state transition. The exception is now caught and the component is now placed into the FAILED state. (markt)
60013: Fix encoding issues when using the RewriteValve with UTF-8 query strings or UTF-8 redirect URLs. (markt)
60022: Improve handling when a WAR file and/or the associated exploded directory are symlinked into the appBase. (markt)
Fix a file descriptor leak when reading the global web.xml. (markt)
Consistently decode URL patterns provided via web.xml using the encoding of the web.xml file where specified or UTF-8 where no explicit encoding is specified. (markt)
Make timing attacks against the Realm implementations harder. (schultz)

Coyote

Correct a regression in refactoring to enable injection of custom keystores that broke the automatic conversion of OpenSSL style PEM key and certificate files for use with JSSE TLS connectors. (markt)
59910: Don't hardcode key alias value to "tomcat" for JSSE. When using a keystore, OpenSSL will still default to it. (remm)
59904: Add a limit (default 200) for the number of cookies allowed per request. Based on a patch by gehui. (markt)
59925: Correct regression in r1628368 and ensure that HTTP separators are handled as configured in the LegacyCookieProcessor. Patch provided by Kyohei Nakamura. (markt)
59950: Correct log message when reporting that the current number of HTTP/2 streams for a connection could not be pruned to below the limit. (markt)
Ensure that Semaphore.release is called in all cases. Even when there is an exception. (violetagg)
60030: Correct a potential infinite loop in the SNI parsing code triggered by failing to handle an end of stream condition. (markt)
Refactor the JSSE client certificate validation so that the effectiveness of the certificateVerificationDepth configuration attribute does not depend on the presence of a certificate revocation list. (markt)
Small logging optimization in the Rfc6265CookieProcessor. Patch provided by Svetlin Zarev. (markt)
OpenSSL now disables 3DES by default so reflect this when using OpenSSL syntax to select ciphers. (markt)
Use the proper ERROR socket status code for async errors with NIO2. (remm)
60035: Fix a potential connection leak if the client drops a TLS connection before the handshake completes. (markt)
Log a warning at start up if a JSSE TLS connector is configured with a trusted certificate that is either not yet valid or has expired. (markt)

Jasper

When writing out a full web.xml file with JspC ensure that the encoding used in the XML prolog matches the encoding used to write the contents of the file. (markt)
Improve the error handling for custom tags to ensure that the tag is returned to the pool or released and destroyed once used. (markt)
60032: Fix handling of method calls that use varargs within EL value expressions. (markt)
Ignore engineOptionsClass and scratchdir when running under a security manager. (markt)
Fixed StringIndexOutOfBoundsException. Based on a patch provided by wuwen via Github. (violetagg)

WebSocket

59908: Ensure that a reason phrase is included in the close message if a session is closed due to a timeout. (markt)

Web applications

59867: Correct the documentation provided by Manager's 403.jsp. (violetagg)
59868: Clarify the documentation for the Manager web application to make clearer that the host name and IP address in the server section are the primary host name and IP address. (markt)
59940: Correct the name of the truststorePassword attribute of the SSLHostConfig element in the configuration documentation. (markt)
MBeans Descriptors How-To is moved to mbeans-descriptors-howto.html. Patch provided by Radoslav Husar. (violetagg)
Update NIO Connector configuration documentation with an information about socket.directSslBuffer. (violetagg)
60034: Correct a typo in the Manager How-To page of the documentation web application. (markt)
Correct the name of the CRL location configuration attributes in the documentation web application. (markt)

jdbc-pool

In order to avoid the unintended skip of PoolCleaner, remove the check code of the execution interval in the task that has been scheduled. (kfujino)
59850: Ensure that the ResultSet is closed when enabling the StatementCache interceptor. (kfujino)
59923: Reduce the default value of validationInterval in order to avoid the potential issue that continues to return an invalid connection after database restart. (kfujino)
Ensure that the ResultSet is returned as Proxy object when enabling the StatementDecoratorInterceptor. (kfujino)
60043: Ensure that the suspectTimeout works without removing connection when the removeAbandoned is disabled. (kfujino)
Add log message of when returning the connection that has been marked suspect. (kfujino)
Correct Javadoc for ConnectionPool.suspect(). Based on a patch by Yahya Cahyadi. (markt)

Other

59871: Add a property (timeFormat) to JULI's OneLineFormatter to enable the format of the time stamp used in log messages to be configured. (markt)
59899: Update Tomcat's copy of the Java Persistence annotations to include the changes made in 2.1 / JavaEE 7. (markt)
Fixed typos in mbeans-descriptors.xml files. (violetagg)
Update the internal fork of Commons BCEL to r1757132 to align with the BCEL 6 release. (markt)
Update the internal fork of Commons DBCP2 to r1757164 to pick up a couple of bug fixes. (markt)
Update the internal fork of Commons Codec to r1757174. Code formatting changes only. (markt)
Update the internal fork of Commons FileUpload to afdedc9. This pulls in a fix to improve the performance with large multipart boundaries. (markt)

Catalina

18500: Add limited support for wildcard host names and host aliases. Names of the form *.domainname are now permitted. Note that an exact host name match takes precedence over a wild card host name match. (markt)
57705: Add debug logging for requests denied by the remote host and remote address valves and filters. Based on a patch by Graham Leggett. (markt)
Correct a regression in the fix for 58588 that removed the entire org.apache.juli package from the embedded JARs rendering them unusable. (markt)
59399: Add a new option to the Realm implementations that ship with Tomcat that allows the HTTP status code used for HTTP -> HTTPS redirects to be controlled per Realm. (markt)
59708: Modify the LockOutRealm logic. Valid authentication attempts during the lock out period will no longer reset the lock out timer to zero. (markt)
Change the default of the sessionCookiePathUsesTrailingSlash attribute of the Context element to false since the problems caused when a Servlet is mapped to /* are more significant than the security risk of not enabling this option by default. (markt)
Follow-up to 59655. Improve the documentation for configuring permitted cookie names. Patch provided by Kyohei Nakamura. (markt)
Do not attempt to start web resources during a web application's initialisation phase since the web application is not fully configured at that point and the web resources may not be correctly configured. (markt)
Improve error handling around user code prior to calling InstanceManager.destroy() to ensure that the method is executed. (markt)

Coyote

Fix a cause of multiple attempts to close the same socket. (markt)
Refactor the certificate keystore and trust store generation to make it easier for embedded users to inject their own key stores. (markt)
Add a maxConcurrentStreamExecution on the HTTP/2 protocol handler to allow restricting the amount of concurrent stream that are being executed in a single connection. The default is to not limit it. (remm)
59233: Add the ability to add TLS virtual hosts dynamically. (markt)
Correct a problem with ServletRequest.getServerPort() for secure HTTP/2 connections that meant an incorrect value was returned when using the default port. (markt)
Improve error handling around user code prior to calling InstanceManager.destroy() to ensure that the method is executed. (markt)

Jasper

Improve error handling around user code prior to calling InstanceManager.destroy() to ensure that the method is executed. (markt)

WebSocket

Now the WebSocket implementation is not built directly on top of the Servlet API and can use Tomcat internals, there is no need for the dedicated WebSocket Executor. It has been replaced by the use of the Connector/Endpoint provided Executor. (markt)
Improve error handling around user code prior to calling InstanceManager.destroy() to ensure that the method is executed. (markt)

Web Applications

Do not log an additional case of IOExceptions in the error handler for the Drawboard WebSocket example when the root cause is the client disconnecting since the logs add no value. (markt)
59642: Mention the localDataSource in the DataSourceRealm section of the Realm How-To. (markt)
59672: Update the security considerations page of the documentation web application to take account of the fact that the Manager and HostManager applications now have a RemoteAddrValve configured by default. (markt)
Follow-up to the fix for 59399. Ensure that the new attribute transportGuaranteeRedirectStatus is documented for all Realms. Also document the NullRealm and when it is automatically created for an Engine. (markt)
Fix the description of maxAge attribute in jdbc-pool doc. This attribute works both when a connection is returned and when a connection is borrowed. (kfujino)
59774: Correct the prefix values in the documented examples for configuring the AccessLogValve. Patch provided by Mike Noordermeer. (markt)

Tribes

Add log message when the ping has timed-out. (kfujino)
If the ping message has been received at the AbstractReplicatedMap#leftOver method, ensure that notify the member is alive than ignore it. (kfujino)

jdbc-pool

Fix the duplicated connection release when connection verification failed. (kfujino)
Ensure that do not remove the abandoned connection that has been already released. (kfujino)

Other

Remove JULI plus log4j extras and embedded artifacts from Maven release script. (markt)
Use the mirror network rather than the ASF master site to download the current ASF dependencies. (markt)
Update the packaged version of the Tomcat Native Library to 1.2.8 to pick up the latest fixes and make 1.2.8 the minimum recommended version. (markt)

Coyote

Remove accidentally committed debug code. (markt)

Catalina

RMI Target related memory leaks are avoidable which makes them an application bug that needs to be fixed rather than a JRE bug to work around. Therefore, start logging RMI Target related memory leaks on web application stop. Add an option that controls if the check for these leaks is made. Log a warning if running on Java 9 with this check enabled but without the command line option it requires. (markt)
Ensure NPE will not be thrown during deployment when scanning jar files without MANIFEST.MF file. (violetagg)
Remove the clearReferencesStatic option from StandardContext. It was known to cause problems with some libraries (such as log4j) and was only linked to suspected memory leaks rather than known memory leaks. It had been disabled by default with no increase in the reports of memory leaks for some time. (markt)
59604: Correct the assumption made in the URL decoding that the default platform encoding is always compatible with ISO-8859-1. This assumption is not always valid, e.g. on z/OS. (markt)
59608: Skip over any invalid Class-Path attribute from JAR manifests. Log errors at debug level due to many bad libraries. (remm)
Fix error message when failed to register MBean. (kfujino)
59655: Configure the cookie name validation to use RFC6265 rules by default to align it with the default cookie parser. Document the impact system properties have on cookie name validation. (mark)

Coyote

Ensure that requests with HTTP method names that are not tokens (as required by RFC 7231) are rejected with a 400 response. (markt)
When an asynchronous request is processed by the AJP connector, ensure that request processing has fully completed before starting the next request. (markt)
Improve handling of HTTP/2 stream resets. (markt)
58750: The HTTP Server header is no longer set by default. A Server header may be configured by setting the server attribute on the Connector. A new Connector attribute, serverRemoveAppProvidedValues may be used to remove any Server header set by a web application. (markt)
59564: Correct offset when reading into HTTP/2 input buffer that could cause problems reading request bodies. (violetagg/markt)
Modify the handling of read/write timeouts so that the appropriate error handling (ReadListener.onError(), WriteListener.onError() or AsyncListener.onError()) is called. (markt)
If an async dispatch results in the completion of request processing, ensure that any remaining request body is swallowed before starting the processing of the next request else the remaining body may be read as the start of the next request leading to a 400 response. (markt)

Jasper

59567: Fix NPE scanning webapps for TLDs when an exploded JAR has an empty WEB-INF/classes/META-INF folder. (remm)
Fix a memory leak in the expression language implementation that caused the class loader of the first web application to use expressions to be pinned in memory. (markt)
59654: Improve error message when attempting to use a TLD file from an invalid location. Patch provided by Huxing Zhang. (markt)

WebSocket

59659: Fix possible memory leak in WebSocket handling of unexpected client disconnects. (markt)

Web applications

58891: Update the SSL how-to. Based on a suggestion by Alexander Kjäll. (markt)

Extras

58588: Remove the JULI extras package from the distribution. It was only useful for switching Tomcat's internal logging to log4j 1.2.x and that version of log4j is no longer supported. No additional Tomcat code is required if switching Tomcat's internal logging to log via log4j 2.x. (markt)

jdbc-pool

Fix a memory leak with the pool cleaner thread that retained a reference to the web application class loader for the first web application to use a connection pool. (markt)

Other

Update the internal fork of Commons DBCP 2 to r1743696 (2.1.1 plus additional fixes). (markt)
Update the internal fork of Commons Pool 2 to r1743697 (2.4.2 plus additional fixes). (markt)
Update the internal fork of Commons File Upload to r1743698 (1.3.1 plus additional fixes). (markt)
Use UTF-8 with a standard prolog for all XML files. (markt)
58626: Add support for a new environment variable (USE_NOHUP) that causes nohup to be used when starting Tomcat. It is disabled by default except on HP-UX where it is enabled by default since it is required when starting Tomcat at boot on HP-UX. (markt)

Catalina

Ensure that annotated web components packed in web fragments will be processed when unpackWARs is enabled. (violetagg)

Catalina

48922: Apply a very small performance improvement to the date formatting in Tomcat's internal request object. Based on a patch provided by Ondrej Medek. (markt)
59206: Ensure NPE will not be thrown by o.a.tomcat.util.file.ConfigFileLoader when catalina.base is not specified. (violetagg)
59217: Remove duplication in the recycling of the path in o.a.tomcat.util.http.ServerCookie. Patch is provided by Kyohei Nakamura. (violetagg)
Fixed possible NPE in o.a.catalina.loader.WebappClassLoaderBase.getResourceAsStream (violetagg)
59213: Async dispatches should be based off a wrapped request. (remm)
Ensure that javax.servlet.ServletRequest and javax.servlet.ServletResponse provided during javax.servlet.AsyncListener registration are made available via javax.servlet.AsyncEvent.getSuppliedRequest and javax.servlet.AsyncEvent.getSuppliedResponse (violetagg)
59219: Ensure AsyncListener.onError() is called if an Exception is thrown during async processing. (markt)
59220: Ensure that AsyncListener.onComplete() is called if the async request times out and the response is already committed. (markt)
59226: Process the Class-Path attribute from JAR manifests for JARs on the class path excluding JARs packaged in WEB-INF/lib. (markt)
59255: Fix possible NPE in mapper. (kkolinko/remm)
59256: slf4j-taglib*.jar should not be excluded from the standard JAR scanning by default. (violetagg)
Clarify the log message that specifying both urlPatterns and value attributes in @WebServlet and @WebFilter annotations is not allowed. (violetagg)
Ensure the exceptions caused by Valves will be available in the log files so that they can be evaluated when o.a.catalina.valves.ErrorReportValve.showReport is disabled. Patch is provided by Svetlin Zarev. (violetagg)
Remove unused distributable attribute that is defined as TransientAttribute of Manager in StoreConfig. (kfujino)
Fix handling of Cluster Receiver in StoreConfig. The bind and host attributes define as TransientAttribute. (kfujino)
59261: ServletRequest.getAsyncContext() now throws an IllegalStateException as required by the Servlet specification if the request is not in asynchronous mode when called. (markt)
59269: Correct the implementation of PersistentManagerBase so that minIdleSwap functions as designed and sessions are swapped out to keep the active session count below maxActiveSessions. (markt)
Update the implementation of the proposed Servlet 4.0 API to provide mapping type information for the current request to reflect discussions within the EG. (markt)
Correctly configure the base path for a resources directory provided by an expanded JAR file. Patch provided by hengyunabc. (markt)
When multiple compressed formats are available and the client does not express a preference, use the server order to determine the preferred format. Based on a patch by gmokki. (markt)
59284: Allow the Tomcat provided JASPIC SimpleServerAuthConfig to pick up module configuration properties from either the property set passed to its constructor or from the properties passed in the call to getAuthContext. Based on a patch by Thomas Maslen. (markt)
59310: Do not add a Content-Length: 0 header for custom responses to HEAD requests that do not set a Content-Length value. (markt)
When normalizing paths, improve the handling when paths end with /. or /.. and ensure that input and output are consistent with respect to whether or not they end with /. (markt)
59317: Ensure that HttpServletRequest.getRequestURI() returns an encoded URI rather than a decoded URI after a dispatch. (markt)
Use the correct URL for the fragment when reporting errors processing a web-fragment.xml file from a JAR located in an unpacked WAR. (markt)
Ensure that JarScanner only uses the explicit call-back to process WEB-INF/classes and only when configured to treat the contents of WEB-INF/classes as a possible exploded JAR. (markt)
Remove the java2DDisposerProtection option from the JreMemoryLeakPreventionListener. The leak is fixed in Java 7 onwards and Tomcat 9 requires Java 8 so the option is unnecessary. (markt)
Remove the securityPolicyProtection option from the JreMemoryLeakPreventionListener. The leak is fixed in Java 8 onwards and Tomcat 9 requires Java 8 so the option is unnecessary. (markt)
Remove the securityLoginConfigurationProtection option from the JreMemoryLeakPreventionListener. The leak is fixed in Java 8 onwards and Tomcat 9 requires Java 8 so the option is unnecessary. (markt)
Ensure that the value for the header X-Frame-Options is constructed correctly according to the specification when ALLOW-FROM option is used. (violetagg)
Fix an IllegalArgumentException if the first use of an internal Response object requires JASPIC authentication. (markt)
Do not trigger unnecessary session ID changes when using JASPIC and the user is authenticated using cached credentials. (markt)
59437: Ensure that the JASPIC CallbackHandler is thread-safe. (markt)
59449: In ContainerBase, ensure that the process to remove a child container is the reverse of the process to add one. Patch provided by Huxing Zhang. (markt)

Coyote

Improves OpenSSL engine robustness when SSL allocation fails for some reason. (remm)
OpenSSL engine code cleanups. (remm)
Align cipher configuration parsing with current OpenSSL master. (markt)
Change the default for honorCipherOrder to false. With the current default TLS configuration, it is no longer necessary for this to be true for a reasonably secure configuration. (markt)
Add a new environment variable JSSE_OPTS that is intended to be used to pass JVM wide configuration to the JSSE implementation. The default value is -Djdk.tls.ephemeralDHKeySize=2048 which protects against weak Diffie-Hellman keys. (markt)
58970: Fix a connection counting bug in the NIO connector that meant some dropped connections were not removed from the current connection count. (markt)
59289: Do not recycle upgrade processors in unexpected close situations. (remm)
59295: Use Locale.toLanguageTag() to construct the Content-Language HTTP header to ensure the locale is correctly represented. Patch provided by zikfat. (markt)
59295: Add support for using pem encoded certificates with JSSE SSL. Submitted by Emmanuel Bourg with additional tweaks. (remm)
Make the TLS certificate chain available to clients when using JSSE+OpenSSL with the certificate chain stored in a Java KeyStore. (markt)
Work around a known issue in OpenSSL that does not permit the TLS handshake to be failed if the ALPN negotiation fails. (markt)
59421: Add direct HTTP/2 connection support. (remm)
Correctly handle a call to AsyncContext.complete() from a non-container thread when non-blocking I/O is being used. (markt)
59451: Correct Javadoc for MessageBytes. Patch provided by Kyohei Nakamura. (markt)
59450: Correctly handle the case where the LegacyCookieProcessor is configured with allowHttpSepsInV0 set to false and forwardSlashIsSeparator set to true. Patch provided by Kyohei Nakamura. (markt)

Jasper

When scanning JARs for TLDs, correctly handle the (rare) case where a JAR has been exploded into WEB-INF/classes and the web application is deployed as a packed WAR. (markt)
59640: NPEs with not found TLDs. (remm)

WebSocket

59189: Explicitly release the native memory held by the Inflater and Deflater when using PerMessageDeflate and the WebSocket session ends. Based on a patch by Henrik Olsson. (markt)
Restore the WsServerContainer.doUpgrade() method which was accidentally removed since it is not used by Tomcat. (markt)
Fix a regression caused by the connector refactoring and ensure that the thread context class loader is set to the web application classloader when processing WebSocket messages on the server. (markt)
Ensure that a client disconnection triggers the error handling for the associated WebSocket end point. (markt)
Make WebSocket client more robust when handling errors during the close of a WebSocket session. (markt)

Web applications

59218: Correct the path to jaspic-providers.xml in Jaspic How-To. Patch is provided by Tatsuya Bessho. (violetagg)
Remove button that has accidentally been added to the host manager. Submitted by Coty Sutherland. (remm)
Update in the documentation the link to the maven repository where Tomcat snapshot artifacts are deployed. (markt/violetagg)
Clarify in the documentation that calls to ServletContext.log(String, Throwable) or GenericServlet.log(String, Throwable) are logged at the SEVERE level. (violetagg)
Correct a typo in SSL/TLS Configuration How-To. Issue reported via comments.apache.org. (violetagg)

Tribes

Avoid NPE when a proxy node failed to retrieve a backup entry. (kfujino)
Add the flag indicating that member is a localMember. (kfujino)
Fix potential NPE that depends on the setting order of attributes of static member when using the static cluster. (kfujino)
Add get/set method for the channel that is related to ChannelInterceptor. (kfujino)
As with the multicast cluster environment, in the static cluster environment, the local member inherits properties from the cluster receiver. (kfujino)
Add get/set method for the channel that is related to each Channel services. (kfujino)
Add name to channel in order to identify channels. In tomcat cluster environment, it is set the cluster name + "-Channel" as default value. (kfujino)
Add the channel name to the thread which is invoked by channel services in order to identify the associated channel. (kfujino)
Ensure that clear the channel instance from channel services when stopping channel. (kfujino)
Implement map state in the replication map. (kfujino)
Ensure that the ping is not executed during the start/stop of the replication map. (kfujino)
In ping processing in the replication map, send not the INIT message but the newly introduced PING message. (kfujino)

Other

59211: Add hamcrest to Eclipse classpath. Patch is provided by Huxing Zhang. (violetagg)
59276: Update optional Checkstyle library to 6.17. (kkolinko)
59280: Update the NSIS Installer used to build the Windows Installers to version 2.51. (kkolinko)
Update the packaged version of the Tomcat Native Library to 1.2.7 to pick up the Windows binaries that are based on OpenSSL 1.0.2h and APR 1.5.2. (markt)

Catalina

Ensure that /WEB-INF/classes is never processed as a web fragment. (markt)
Switch default connector when native is installed. Unless configured otherwise, the NIO endpoint will be used by default. If SSL is configured, OpenSSL will be used rather than JSSE. (remm)
Correct a regression in the fix for 58867. When configuring a Context to use an external directory for the docBase, and that directory happens to be located along side the original WAR, use the directory as the docBase rather than expanding the WAR into the appBase and using the newly created expanded directory as the docBase. (markt)
58351: Make the server build date and server version number accessible via JMX. Patch provided by Huxing Zhang. (markt)
58988: Special characters in the substitutions for the RewriteValve can now be quoted with a backslash. (fschumacher)
58999: Fix class and resource name filtering in WebappClassLoader. It throws a StringIndexOutOfBoundsException if the name is exactly "org" or "javax". (rjung)
Add JASPIC (JSR-196) support. (markt)
Make checking for var and map replacement in RewriteValve a bit stricter and correct detection of colon in var replacement. (fschumacher)
Refactor the web application class loader to reduce the impact of JAR scanning on the memory footprint of the web application. (markt)
Fix some resource leaks in the error handling for accessing files from JARs and WARs. (markt)
Refactor the JAR and JAR-in-WAR resource handling to reduce the memory footprint of the web application. (markt)
Refactor the web.xml parsing so a new parser is created every time the web application starts rather than creating and caching the parser when the Context is created. This enables the parser to take account of modified Context configuration parameters and reduces (slightly) the memory footprint of a running Tomcat instance. (markt)
Switch the web application class loader to the ParallelWebappClassLoader by default. (markt)
57809: Remove the custom context attribute that held the effective web.xml. Components needing access to configuration information may access it via the Servlet API. (markt)
Refactor JAR scanning to reduce memory footprint. (markt)
59001: Correctly handle the case when Tomcat is installed on a path where one of the segments ends in an exclamation mark. (markt)
Expand the fix for 59001 to cover the special sequences used in Tomcat's custom jar:war: URLs. (markt)
59043: Avoid warning while expiring sessions associated with a single sign on if HttpServletRequest.logout() is used. (markt)
59054: Ensure that using the CrawlerSessionManagerValve in a distributed environment does not trigger an error when the Valve registers itself in the session. (markt)
Add socket properties support to storeconfig. (remm)
Fix incorrect parsing of the NE and NC flags in rewrite rules. (remm)
59065: Correct the timing of the check for colons in paths on non-Windows systems implemented in catalina.sh so it works correctly with Cygwin. Patch provided by Ed Randall. (markt)
When a Host is configured with an appBase that does not exist, create the appBase before trying to expand an external WAR file into it. (markt)
59115: When using the Servlet 3.0 file upload, the submitted file name may be provided as a token or a quoted-string. If a quoted-string, unquote the string before returning it to the user. (markt)
59123: Close NamingEnumeration objects used by the JNDIRealm once they are no longer required. (fschumacher/markt)
Implement the proposed Servlet 4.0 API to provide mapping type information for the current request. (markt)
59138: Correct a false positive warning for ThreadLocal related memory leaks when the key class but not the value class has been loaded by the web application class loader. (markt)
59017: Make the pre-compressed file support in the Default Servlet generic so any compression may be used rather than just gzip. Patch provided by Mikko Tiihonen. (markt)
59145: Don't log an invalid warning when a user logs out of a session associated with SSO. (markt)
59150: Add an additional flag on APR listener to allow disabling automatic use of OpenSSL. (remm)
59151: Fix a regression in the fix for 56917 that added additional (and arguably unnecessary) validation to the provided redirect location. (markt)
59154: Fix a NullPointerException in the JAASMemoryLoginModule resulting from the introduction of the CredentialHandler to Realms. (schultz/markt)

Coyote

Handle the case in the NIO2 connector where the required TLS buffer sizes increase after the connection has been initiated. (markt/remm)
Bad processing of handshake errors in NIO2. (remm)
Use JSSE session configuration options with OpenSSL. (remm)
59015: Fix potential cause of endless APR Poller loop during shutdown if the Poller experiences an error during the shutdown process. (markt)
Align cipher aliases for kECDHE and ECDHE with the current OpenSSL implementation. (markt)
59081: Retain the user defined cipher order when defining ciphers. (markt)
59089: Correctly ignore HTTP headers that include non-token characters in the header name. (markt)

Jasper

Update to the Eclipse JDT Compiler 4.5.1. (markt)
57583: Improve the performance of javax.servlet.jsp.el.ScopedAttributeELResolver when resolving attributes that do not exist. This improvement only works when Jasper is used with Tomcat's EL implementation. (markt)

WebSocket

Fix a timing issue on session close that could result in an exception being thrown for an incomplete message even through the message was completed. (markt)
Correctly handle compression of partial messages when the final message fragment has a zero length payload. (markt)
59119: Correct read logic for WebSocket client when using secure connections. (markt)
59134: Correct client connect logic for secure connections made through a proxy. (markt)

Web applications

Correct an error in the documentation of the expected behaviour for automatic deployment. If a WAR is updated and an expanded directory is present, the directory will always be deleted and recreated by expanding the WAR if unpackWARs is true. (markt)
48674: Implement an option within the Host Manager web application to persist the current configuration. Based on a patch by Coty Sutherland. (markt)
58935: Remove incorrect references in the documentation to using jar:file: URLs with the Manager application. (markt)
Correct the description of the ServletRequest.getServerPort() in Proxy How-To. Issue reported via comments.apache.org. (violetagg)
The Manager and Host Manager applications are now only accessible via localhost by default. (markt)

Tribes

If promoting a proxy node to a primary node when getting a session, notify the change of the new primary node to the original backup node. (kfujino)

Other

58283: Change the default download location for libraries during the build process from /usr/share/java to ${user.home}/temp. Patch provided by Ahmed Hosni. (markt)
59031: When using the Windows uninstaller, do not remove the contents of any directories that have been symlinked into the Tomcat directory structure. (markt)
Update the packaged version of the Tomcat Native Library to 1.2.5 to pick up the Windows binaries that are based on OpenSSL 1.0.2g and APR 1.5.1. (markt)
Modify the default tomcat-users.xml file to make it harder for users to configure the entries intended for use with the examples web application for the Manager application. (markt)

General

Allow to configure multiple JUnit test class patterns with the build property test.name and document the property in BUILDING.txt. (rjung)

Catalina

Protect initialization of ResourceLinkFactory when running with a SecurityManager. (kkolinko)
Correct a thread safety issue in the filtering of session attributes based on the implementing class name of the value object. (markt)
Fix class loader decision on the delegation for class loading and resource lookup and make it faster too. (rjung)
58768: Log a warning if a redirect fails because of an invalid location. (markt)
58827: Remove remains of JSR-77 implementation. (markt)
58946: Ensure that the request parameter map remains immutable when processing via a RequestDispatcher. (markt)
58905: Ensure that Tomcat.silence() silences the correct logger and respects the current setting. (markt)

Coyote

Correct a regression in the connector refactoring in 9.0.0.M2 that broke TLS support for the APR/native connector. (remm)
Correct an NPE when listing the enabled ciphers (e.g. via the Manager web application) for a TLS enabled APR/native connector. (markt)
New configuration option ajpFlush for the AJP connectors to disable the sending of AJP flush packets. (rjung)
Handle the case in the NIO connector where the required TLS buffer sizes increase after the connection has been initiated. (markt)

Catalina

Refactor creation of MapperListener to ensure that the Mapper used is the Mapper associated with the Service for which the listener was created. (markt)
Move the functionality that provides redirects for context roots and directories where a trailing / is added from the Mapper to the DefaultServlet. This enables such requests to be processed by any configured Valves and Filters before the redirect is made. This behaviour is configurable via the mapperContextRootRedirectEnabled and mapperDirectoryRedirectEnabled attributes of the Context which may be used to restore the previous behaviour. (markt)
Refactor Service.getContainer() to return an Engine rather than a Container. (markt)
34319: Only load those keys in StoreBase.processExpire from JDBCStore, that are old enough, to be expired. Based on a patch by Tom Anderson. (fschumacher)
56917: As per RFC7231 (HTTP/1.1), allow HTTP/1.1 and later redirects to use relative URIs. This is controlled by a new attribute useRelativeRedirects on the Context and defaults to true. (markt)
58629: Allow an embedded Tomcat instance to start when the Service has no Engine configured. (markt)
Correctly notify the MapperListener associated with a Service if the Engine for that Service is changed. (markt)
Make a web application's CredentialHandler available through a context attribute. This allows a web application to use the same algorithm for validating or generating new stored credentials from cleartext ones. (schultz)
58635: Enable break points to be set within agent code when running Tomcat with a Java agent. Based on a patch by Huxing Zhang. (markt)
Fixed potential NPE in HostConfig while deploying an application. Issue reported by coverity scan. (violetagg)
58655: Fix an IllegalStateException when calling HttpServletResponse.sendRedirect() with the RemoteIpFilter. This was caused by trying to correctly generate the absolute URI for the redirect. With the fix for 56917, redirects may now be relative making the sendRedirect() implementation for the RemoteIpFilter much simpler. This also addresses issues where the redirect may not have behaved as expected when redirecting from http to https to from https to http. (markt)
58657: Exceptions in a Servlet 3.1 ReadListener or WriteListener do not need to be immediately fatal to the connection. Allow an error response to be written. (markt)
Correct implementation of validateClientProvidedNewSessionId so client provided session IDs may be rejected if validation is enabled. (markt)
58701: Reset the instanceInitialized field in StandardWrapper when unloading a Servlet so that a new instance may be correctly initialized. (markt)
Add a new flag aprPreferred to the Apr listener. if set to false, when using the connector defaults, it will use NIO + OpenSSL if tomcat-native is available, rather than the APR connector. (remm)
Add path parameter handling to HttpServletRequest.getContextPath(). This is a follow-up to the fix for 57215. (markt)
58692: Make StandardJarScanner more robust. Log a warning if a class path entry cannot be scanned rather than triggering the failure of the web application. Includes a test case written by Derek Abdine. (markt)
58702: Ensure an access log entry is generated if the client aborts the connection. (markt)
Fixed various issues reported by Findbugs. (violetagg)
58735: Add support for the X-XSS-Protection header to the HttpHeaderSecurityFilter. Patch provided by Jacopo Cappellato. (markt)
Add the StatusManagerServlet to the list of Servlets that can only be loaded by privileged applications. (markt)
Simplify code and fix messages in org.apache.catalina.core.DefaultInstanceManager class. (kkolinko)
58751: Correctly handle the case where an AsyncListener dispatches to a Servlet on an asynchronous timeout and the Servlet uses sendError() to trigger an error page. Includes a test case based on code provided by Andy Wilkinson.(markt)
Ensure that the proper file encoding if specified will be used when a readme file is served by DefaultServlet. (violetagg)
Fix declaration of localPort attribute of Connector MBean: it is read-only. (kkolinko)
58766: Make skipping non-class files during annotation scanning faster by checking the file name first. Improve debug logging. (kkolinko)
58836: Correctly merge query string parameters when processing a forwarded request where the target includes a query string that contains a parameter with no value. (markt/kkolinko)
Make sure that shared Digester is reset in an unlikely error case in HostConfig.deployWAR(). (kkolinko)
Extend the feature available in the cluster session manager implementations that enables session attribute replication to be filtered based on attribute name to all session manager implementations. Note that configuration attribute name has changed from sessionAttributeFilter to sessionAttributeNameFilter. Apply the filter on load as well as unload to ensure that configuration changes made while the web application is stopped are applied to any persisted data. (markt)
Extend the session attribute filtering options to include filtering based on the implementation class of the value and optional WARN level logging if an attribute is filtered. These options are available for all of the Manager implementations that ship with Tomcat. When a SecurityManager is used filtering will be enabled by default. (markt)
Remove distributable and maxInactiveInterval from the Manager interface because the attributes are never used. The equivalent attributes from the Context always take precedence. (markt)
58867: Improve checking on Host start for WAR files that have been modified while Tomcat has stopped and re-expand them if unpackWARs is true. (markt)
58900: Correctly undeploy symlinked resources and prevent an infinite cycle of deploy / undeploy. (markt)

Coyote

58621: The certificate chain cannot be set using the main certificate attribute, so restore the certificate chain property. (remm)
Allow a new SSL config type where a connector can use either JSSE or OpenSSL. Both could be allowed, but it would likely create support issues. This type is used by the OpenSSL implementation for NIOx. (remm)
Improve upgrade context classloader handling by using Context.bind and unbind. (remm)
Improve OpenSSL keystore/truststore configuration by using the code from the JSSE implementation. (remm, jfclere)
Fix a potential loop when a client drops the connection unexpectedly. (markt)
OpenSSL renegotiation support for client certificate authentication. (remm)
Fix NIO connector renegotiation. (remm)
58659: Fix a potential deadlock during HTTP/2 processing when the connection window size is limited. (markt)

Jasper

57136#c25: Change default value of quoteAttributeEL setting in Jasper to be true for better compatibility with other implementations and older versions of Tomcat. Add command line option -no-quoteAttributeEL in JspC. (kkolinko)
Fix handling of missing messages in org.apache.el.util.MessageFactory. (violetagg)

Cluster

Enable an explicit configuration of local member in the static cluster membership. (kfujino)
Fix potential integer overflow in DeltaSession. Reported by coverity scan. (fschumacher)
In order to avoid that the heartbeat thread and the background thread to run Channel.heartbeat simultaneously, if heartbeatBackgroundEnabled of SimpleTcpCluster set to true, ensure that the heartbeat thread does not start. (kfujino)

WebSocket

55006: The WebSocket client now honors the java.net.java.net.ProxySelector configuration (using the HTTP type) when establishing WebSocket connections to servers. Based on a patch by Niki Dokovski. (markt)
58624: Correct a potential deadlock if the WebSocket connection is closed when a message write is in progress. (markt)
57489: Ensure onClose() is called when a WebSocket connection is closed even if the sending of the close message fails. Includes test cases by Barry Coughlan. (markt)

Web Applications

58631: Correct the continuation character use in the Windows Service How-To page of the documentation web application. (markt)
Correct the SSL documentation for deprecated attributes to point to the correct, new location for attributes related to individual certificates. (markt)
Correct some typos in the JNDI resources How-To. (markt)
Don't create session unnecessarily in the Manager application. (markt)
Don't create session unnecessarily in the Host Manager application. (markt)
58723: Clarify documentation and error messages for the text interface of the manager to make clear that version must be used with path when referencing contexts deployed using parallel deployment. (markt)
Document test.threads option in BUILDING.txt. (kkolinko)

Tribes

Ensure that the static member is registered to the add suspect list even if the static member that is registered to the remove suspect list has disappeared. (kfujino)
When using a static cluster, add the members that have been cached in the membership service to the map members list in order to ensure that the map member is a static member. (kfujino)
Add support for the startup notification of local members in the static cluster. (kfujino)
Ignore the unnecessary member remove operation from different domain. (kfujino)
Add support for the shutdown notification of local members in the static cluster. (kfujino)

jdbc-pool

Correct evaluation of system property org.apache.tomcat.jdbc.pool.onlyAttemptCurrentClassLoader. It was basically ignored before. Reported by coverity scan. (fschumacher)
Fix potential integer overflow in ConnectionPool and PooledConnection. Reported by coverity scan. (fschumacher)

Other

Update optional Checkstyle library to 6.14.1. (kkolinko)
Update the packaged version of the Tomcat Native Library to 1.2.4 to pick up the Windows binaries that are based on OpenSSL 1.0.2e and APR 1.5.1. (markt)
Update the NSIS Installer used to build the Windows Installers to version 2.50. (markt/kkolinko)
Update the internal fork of Commons BCEL to r1725718 to align with the refactoring for BCEL 6, the next major BCEL release. (markt)
Update the internal fork of Commons DBCP 2 to r1725730 (2.1.1 plus additional fixes). (markt)
Update the internal fork of Commons Pool 2 to r1725738 (2.4.2 plus additional fixes). (markt)
Update the internal fork of Commons Codec to r1725746 (1.9 plus additional fixes). (markt)

General

Make Java 8 the minimum required version to build and run Tomcat 9. (markt)
Remove support for Comet. (markt)
Tighten up the default file permissions for the .tar.gz distribution so no files or directories are world readable by default. Configure Tomcat to run with a default umask of 0027 which may be overridden by setting UMASK in setenv.sh. (markt)
Remove native code (Windows Service Wrapper, APR/native connector) support for Windows Itanium. (markt)

Catalina

The default HTTP cookie parser has been changed to org.apache.tomcat.util.http.Rfc6265CookieProcessor. (markt)

Coyote

Remove support for the HTTP BIO and AJP BIO connectors. (markt)
Refactor HTTP upgrade and AJP implementations to reduce duplication. (markt)
Add support for HPACK header encoding and decoding, contributed by Stuart Douglas. (remm)
57108: Add support for Server Name Indication (SNI). There has been significant changes to the SSL configuration in server.xml to support this. (markt)
Add SSL engine for JSSE backed by OpenSSL. Includes ALPN support. Based on code contributed by Numa de Montmollin and derived from code developed by Twitter and Netty. (remm)
RFC 7230 states that clients should ignore reason phrases in HTTP/1.1 response messages. Since the reason phrase is optional, Tomcat no longer sends it. As a result the system property org.apache.coyote.USE_CUSTOM_STATUS_MSG_IN_HEADER is no longer used and has been removed. (markt)
The minimum required Tomcat Native version has been increased to 1.2.2. The 1.2.x branch includes ALPN and SNI support which are required for HTTP/2. (markt)
Add support for HTTP/2 including server push. (markt)

Tribes

Clarify the handling of Copy message and Copy nodes. (kfujino)

Other

Support the use of the threads attribute on Ant's junit task. Note that using this with a value of greater than one will disable Cobertura code coverage. (markt)

Changelog

Tomcat 9.0.0.M21 (markt)

General

Catalina

Coyote

Jasper

WebSocket

Web Applications

Tribes

Other

2017-04-18 Tomcat 9.0.0.M20 (markt)

Catalina

Coyote

Jasper

Tribes

jdbc-pool

Other

2017-03-30 Tomcat 9.0.0.M19 (markt)

Catalina

Coyote

Jasper

jdbc-pool

Other

2017-03-13 Tomcat 9.0.0.M18 (markt)

Catalina

Coyote

Jasper

Cluster

WebSocket

Tribes

Web Applications

Other

2017-01-16 Tomcat 9.0.0.M17 (markt)

Catalina

Coyote

Jasper

WebSocket

jdbc-pool

Other

not released Tomcat 9.0.0.M16 (markt)

Catalina

Coyote

Jasper

WebSocket

Web Applications

Other

2016-12-08 Tomcat 9.0.0.M15 (markt)

Other

not released Tomcat 9.0.0.M14 (markt)

Catalina

Coyote

Jasper

Web applications

Tribes

WebSocket

jdbc-pool

Other

2016-11-08 Tomcat 9.0.0.M13 (markt)

Coyote

not released Tomcat 9.0.0.M12 (markt)

Catalina

Coyote

Jasper

Web applications

Tribes

Other

2016-10-10 Tomcat 9.0.0.M11 (markt)

Catalina

Coyote

Jasper

Web applications

jdbc-pool

Other

2016-09-05 Tomcat 9.0.0.M10 (markt)

Catalina

Coyote

Jasper

WebSocket

Web applications

jdbc-pool