## Changelog

### Tomcat 8.5.31 (markt)

#### Catalina

- 62263: Avoid a `NullPointerException` when the `RemoteIpValve` processes a request for which no Context can be found. (markt)
- Fix a rare edge case that is unlikely to occur in real usage. This edge case meant that writing long streams of UTF-8 characters to the HTTP response that consisted almost entirely of surrogate pairs could result in one surrogate pair being dropped. (markt)
- Register MBean when DataSource Resource `type="javax.sql.XADataSource"`. Patch provided by Masafumi Miura. (csutherl)
- Update the internal fork of Apache Commons BCEL to r1829827 to add early access Java 11 support to the annotation scanning code. (markt)
- 62297: Enable the `CrawlerSessionManagerValve` to correctly handle bots that crawl multiple hosts and/or web applications when the Valve is configured on a Host or an Engine. (fschumacher)
- 62309: Fix a `SecurityException` when using JASPIC under a `SecurityManager` when authentication is not mandatory. (markt)
- 62329: Correctly list resources in JAR files when directories do not have dedicated entries. Patch provided by Meelis Müür. (markt)
- Collapse multiple leading `/` characters to a single `/` in the return value of `HttpServletRequest#getContextPath()` to avoid issues if the value is used with `HttpServletResponse#sendRedirect()`. This behaviour is enabled by default and configurable via the new Context attribute `allowMultipleLeadingForwardSlashInPath`. (markt)
- Improve handing of overflow in the UTF-8 decoder with supplementary characters. (markt)

#### Coyote

- Correct off-by-one error in thread pool that allowed thread pools to increase in size to one more than the configured limit. Patch provided by usc. (markt)
- Prevent unexpected TLS handshake failures caused by errors during a previous handshake that were not correctly cleaned-up when using the NIO or NIO2 connector with the `OpenSSLImplementation`. (markt)
- Enable strict validation of the provided host name and port for all connectors. Requests with invalid host names and/or ports will be rejected with a 400 response. (markt)
- 62273: Implement configuration options to work-around specification non-compliant user agents (including all the major browsers) that do not correctly %nn encode URI paths and query strings as required by RFC 7230 and RFC 3986. (markt)

#### Jasper

- Enable ECJ version 4.7 and later to be used as a drop in replacement for the ECJ version that ships with Apache Tomcat. (markt)
- Enable Java 10 to be specified as a JSP source and/or target if a newer ECJ version is used. (markt)
- 62287: Do not rely on hash codes to test instances of `ValueExpressionImpl` for equality. Patch provided by Mark Struberg. (markt)

#### WebSocket

- 62301: Correct a regression in the fix for 61491 that didn't correctly handle a final empty message part in all circumstances when using `PerMessageDeflate`. (markt)
- 62332: Ensure WebSocket connections are closed after an I/O error is experienced reading from the client. (markt)

#### Other

- Avoid warning when running under Cygwin when the `JAVA_ENDORSED_DIRS` environment variable is not set. Patch provided by Zemian Deng. (markt)

### 2018-04-07 Tomcat 8.5.30 (markt)

#### Catalina

- 51195: Avoid a false positive report of a web application memory leak by clearing `ObjectStreamClass$Caches` of classes loaded by the web application when the web application is stopped. (markt)
- 52688: Add support for the `maxDays` attribute to the `AccessLogValve` and `ExtendedAccessLogValve`. This allows the maximum number of days for which rotated access logs should be retained before deletion to be defined. (markt)
- Ensure the MBean names for the `SSLHostConfig` and `SSLHostConfigCertificate` are correctly formed when the `Connector` is bound to a specific IP address. (markt)
- 62168: When using the `PersistentManager` honor a value of `-1` for `minIdleSwap` and do not swap out sessions to keep the number of active sessions under `maxActive`. Patch provided by Holger Sunke. (markt)
- 62172: Improve Javadoc for `org.apache.catalina.startup.Constants` and ensure that the constants are correctly used. (markt)
- 62175: Avoid infinite recursion, when trying to validate a session while loading it with `PersistentManager`. (fschumacher)
- Ensure that `NamingContextListener` instances are only notified once of property changes on the associated naming resources. (markt)
- Add LoadBalancerDrainingValve, a Valve designed to reduce the amount of time required for a node to drain its authenticated users. (schultz)
- 62224: Disable the `forkJoinCommonPoolProtection` of the `JreMemoryLeakPreventionListener` when running on Java 9 and above since the underlying JRE bug has been fixed. (markt)

#### Coyote

- Avoid potential loop in APR/Native poller. (markt)
- Ensure streams that are received but not processed are excluded from the tracking of maximum ID of processed streams. (markt)
- Refactor the check for a paused connector to consistently prevent new streams from being created after the connector has been paused. (markt)
- Improve debug logging for HTTP/2 pushed streams. (markt)
- The OpenSSL engine SSL session will now ignore invalid accesses. (remm)
- 62177: Correct two protocol errors with HTTP/2 `PUSH_PROMISE` frames. Firstly, the HTTP/2 protocol only permits pushes to be sent on peer initiated requests. Secondly, pushes must be sent in order of increasing stream ID. These restriction were not being enforced leading to protocol errors at the client. (markt)

#### Web applications

- Add document for `FragmentationInterceptor`. (kfujino)
- Document how the roles for an authenticated user are determined when the `CombinedRealm` is used. (markt)

#### Tribes

- Add JMX support for `FragmentationInterceptor` in order to prevent warning of startup. (kfujino)

#### jdbc-pool

- Ensure that `SQLWarning` has been cleared when connection returns to the pool. (kfujino)
- Enable clearing of `SQLWarning` via JMX. (kfujino)
- Ensure that parameters have been cleared when `PreparedStatement` and/or `CallableStatement` are cached. (kfujino)
- Enable PoolCleaner to be started even if `validationQuery` is not set. (kfujino)

#### Other

- 62164: Switch the build script to use TLS for downloads from SourceForge and Maven Central to avoid failures due to HTTP to HTTPS redirects. (markt)
- Always report the OS's umask when launching the JVM. (schultz)

### 2018-03-08 Tomcat 8.5.29 (markt)

#### Catalina

- Minor optimization when calling class transformers. (rjung)
- Prevent Tomcat from applying gzip compression to content that is already compressed with brotli compression. Based on a patch provided by burka. (markt)
- 62090: Null container names are not allowed. (remm)
- 62104: Fix programmatic login regression as the NonLoginAuthenticator has to be set for it to work (if no login method is specified). (remm)
- 62117: Improve error message in `catalina.sh` when calling `kill -0 <pid>` fails. Based on a suggestion from Mark Morschhaeuser. (markt)
- 62118: Correctly create a JNDI `ServiceRef` using the specified interface rather than the concrete type. Based on a suggestion by Ángel Álvarez Páscua. (markt)
- Fix for `RequestDumperFilter` log attribute. Patch provided by Kirill Romanov via Github. (violetagg)
- 62123: Avoid `ConcurrentModificationException` when attempting to clean up application triggered RMI memory leaks on web application stop. (markt)
- Correct a regression in the fix for 60276 that meant that compression was applied to all MIME types. Patch provided by Stefan Knoblich. (markt)

#### Coyote

- Add minor HPACK fixes, based on fixes by Stuart Douglas. (remm)
- 61751: Follow up fix so that OpenSSL engine returns underflow when unwrapping if no bytes were produced and the input is empty. (remm)
- Minor OpenSSL engine cleanups. (remm)
- NIO SSL handshake should throw an exception on overflow status, like NIO2 SSL. (remm)

#### Web applications

- 48672: Add documentation for the Host Manager web application. Patch provided by Marek Czernek. (markt)
- Work-around a known, non-specification compliant behaviour in some versions of IE that can allow XSS when the Manager application generates a plain text response. Based on a suggestion from Muthukumar Marikani. (markt)

#### Other

- Update the build script so MD5 hashes are no longer generated for releases as per the change in the ASF distribution policy. (markt)

### 2018-02-11 Tomcat 8.5.28 (markt)

#### Catalina

- Prevent a stack trace being written to standard out when running on Java 10 due to changes in the `LogManager` implementation. (markt)
- 62000: When a JNDI reference cannot be resolved, ensure that the root cause exception is reported rather than swallowed. (markt)
- 62036: When caching an authenticated user Principal in the session when the web application is configured with the `NonLoginAuthenticator`, cache the internal Principal object rather than the user facing Principal object as Tomcat requires the internal object to correctly process later authorization checks. (markt)
- Avoid duplicate load attempts if one has been made already. (remm)
- Avoid NPE in ThreadLocalLeakPreventionListener if there is no Engine. (remm)
- 62067: Correctly apply security constraints mapped to the context root using a URL pattern of `""`. (markt)
- When using Tomcat embedded, only perform Authenticator configuration once during web application start. (markt)
- Process all `ServletSecurity` annotations at web application start rather than at servlet load time to ensure constraints are applied consistently. (markt)

#### Coyote

- 61751: Fix truncated request input streams when using NIO2 with TLS. (markt)
- 62023: Log error reporting multiple SSLHostConfig elements when using the APR Connector instead of crashing Tomcat. (csutherl)
- 62032: Fix NullPointerException when certificateFile is not defined on an SSLHostConfig and unify the behavior when a certificateFile is defined but the file does not exist for both JKS and PEM file types. (csutherl)

#### WebSocket

- 62024: When closing a connection with an abnormal close, close the socket immediately rather than waiting for a close message from the client that may never arrive. (markt)

#### Webapps

- 62049: Fix missing class from manager 404 JSP error page. (remm)

#### jdbc-pool

- Enhance the JMX support for jdbc-pool in order to expose `PooledConnection` and `JdbcInterceptors`. (kfujino)
- Add MBean for `PooledConnection`. (kfujino)
- 62011: Add MBean for `StatementCache`. (kfujino)
- Expose the cache size for each connection via JMX in `StatementCache`. (kfujino)
- Add MBean for `ResetAbandonedTimer`. (kfujino)

#### Other

- Update the NSIS Installer used to build the Windows installer to version 3.03. (kkolinko)

### 2018-01-22 Tomcat 8.5.27 (markt)

#### Catalina

- Correct a regression in the previous fix for 61916 that meant that any call to `addHeader()` would have been replaced with a call to `setHeader()` for all requests mapped to the `AddDefaultCharsetFilter`. (markt)

#### Coyote

- 61993: Improve handling for `ByteChunk` and `CharChunk` instances that grow close to the maximum size allowed by the JRE. (markt)

#### Jasper

- 43925: Add a new system property (`org.apache.jasper.runtime.BodyContentImpl.BUFFER_SIZE`) to control the size of the buffer used by Jasper when buffering tag bodies. (markt)

#### Web applications

- 62006: Document the new `JvmOptions9` command line parameter for `tomcat8.exe`. (markt)

### not released Tomcat 8.5.26 (markt)

#### Catalina

- Correct Javadoc errors in release build.

### not released Tomcat 8.5.25 (markt)

#### Catalina

- 47214: Use a loop to preload anonymous inner classes when running under a `SecurityManager`, to be safe for future changes in the code or using a different compiler. (kkolinko)
- 57619: Implement a small optimisation to how JAR URLs are processed to reduce the storage of duplicate String objects in memory. Patch provided by Dmitri Blinov. (markt)
- Add some missing NPEs to ServletContext. (remm)
- 61916: Extend the `AddDefaultCharsetFilter` to add a character set when the content type is set via `setHeader()` or `addHeader()` as well as when it is set via `setContentType()`. (markt)
- 61999: maxSavePostSize set to 0 should disable saving POST data during authentication. (remm)

#### Coyote

- 60276: Implement GZIP compression support for responses served over HTTP/2. (markt)
- Do not call onDataAvailable without any data to read. (remm)
- 61886: Log errors on non-container threads at `DEBUG` rather than `INFO`. The exception will be made available to the application via the asynchronous error handling mechanism. (markt)
- 61914: Possible NPE with Java 9 when creating a SSL engine. Patch submitted by Evgenij Ryazanov. (remm)
- 61918: Fix connectionLimitLatch counting when closing an already closed socket. Based on a patch by Ryan Fong. (remm)
- Add support for the OpenSSL ARIA ciphers to the OpenSSL to JSSE cipher mapping. (markt)
- 61932: Allow a call to `AsyncContext.dispatch()` to terminate non-blocking I/O. (markt)
- 61948: Improve the handling of malformed ClientHello messages in the code that extracts the SNI information from a TLS handshake for the JSSE based NIO and NIO2 connectors. (markt)
- Fix NIO2 handshaking with a full input buffer. (remm)
- Return a simple, plain text error message if a client attempts to make a plain text HTTP connection to a TLS enabled NIO or NIO2 Connector. (markt)
- Correctly handle EOF when `ServletInputStream.isReady()` is called. (markt)

#### Jasper

- 61854: When using sets and/or maps in EL expressions, ensure that Jasper correctly parses the expression. Patch provided by Ricardo Martin Camarero. (markt)
- Improve the handling of methods with varargs in EL expressions. In particular, the calling of a varargs method with no parameters now works correctly. Based on a patch by Nitkalya (Ing) Wiriyanuparb. (markt)

#### Web applications

- Remove the Servlet 4.0 early preview example from the examples web application as the early preview is now deprecated in favour of Tomcat 9 which provides a full Servlet 4.0 implementation. (markt)
- 61223: Add the mbeans-descriptors.dtd file to the custom MBean documentation so users have a reference to use when constructing mbeans-descriptors.xml files for custom components. (markt)
- 61566: Expose the currently in use certificate chain and list of trusted certificates for all virtual hosts configured using the JSSE style (keystore) TLS configuration via the Manager web application. (markt)
- Partial fix for 61886. Ensure that multiple threads do not attempt to complete the `AsyncContext` if an I/O error occurs in the stock ticker example Servlet. (markt)
- 61886: Prevent `ConcurrentModificationException` when running the asynchronous stock ticker in the examples web application. (markt)
- 61886: Prevent `NullPointerException` and other errors if the stock ticker example is running when the examples web application is stopped. (markt)
- 61910: Clarify the meaning of the `allowLinking` option in the documentation web application. (markt)
- Add OCSP configuration information to the SSL How-To. Patch provided by Marek Czernek. (markt)

#### jdbc-pool

- 61312: Prevent `NullPointerException` when using the statement cache of connection that has been closed. (kfujino)

#### Other

- Add an additional system property for the system property replacement. (remm)
- Add missing SHA-512 hash for release artifacts to the build script. (markt)
- Update the internal fork of Commons Pool 2 to 2.4.3. (markt)
- Update the internal fork of Commons DBCP 2 to 8a71764 (2017-10-18) to pick up some bug fixes and enhancements. (markt)
- Update the internal fork of Commons FileUpload to 6c00d57 (2017-11-23) to pick up some code clean-up. (markt)
- Update the internal fork of Commons Codec to r1817136 to pick up some code clean-up. (markt)
- The native source bundles (for Commons Daemon and Tomcat Native) are no longer copied to the bin directory for the deploy target. They are now only copied to the bin directory for the release target. (markt)

### 2017-11-30 Tomcat 8.5.24 (markt)

#### Catalina

- When running under Java 9 or later, and the `urlCacheProtection` option of the `JreMemoryLeakPreventionListener` is enabled, use the API added in Java 9 to only disable the caching for JAR URL connections. (markt)
- Fix possible `SecurityException` when using TLS related request attributes. (markt)
- 61597: Extend the `StandardJarScanner` to scan JARs on the module path when running on Java 9 and class path scanning is enabled. (markt)
- 61601: Add support for multi-release JARs in JAR scanning and web application class loading. (markt)
- 61681: Allow HTTP/2 push when using request wrapping. (remm)
- Provide the `SessionInitializerFilter` that can be used to ensure that an HTTP session exists when initiating a WebSocket connection. Patch provided by isapir. (markt)
- 61682: When re-prioritising HTTP/2 streams, ensure that both parent and children fields are correctly updated to avoid a possible `StackOverflowError`. (markt)
- Improve concurrency by reducing the scope of the synchronisation for `javax.security.auth.message.config.AuthConfigFactory` in the JASPIC API implementation. Based on a patch by Pavan Kumar. (markt)
- Avoid a possible `NullPointerException` when timing out `AsyncContext` instances during shut down. (markt)
- 61777: Avoid a `NullPointerException` when detaching a JASPIC `RegistrationListener`. Patch provided by Lazar. (markt)
- 61778: Correct the return value when detaching a JASPIC `RegistrationListener`. Patch provided by Lazar. (markt)
- 61779: Avoid a `NullPointerException` when a `null` `RegistrationListener` is passed to `AuthConfigFactory.getConfigProvider()`. Patch provided by Lazar. (markt)
- 61780: Only include the default JASPIC registration ID in the return value for a call to `AuthConfigFactory.getRegistrationIDs()` if a `RegistrationContext` has been registered using the default registration ID. Patch provided by Lazar. (markt)
- 61781: Enable JASPIC provider registrations to be persisted when the layer and/or application context are `null`. Patch provided by Lazar. (markt)
- 61782: When calling `AuthConfigFactory.doRegisterConfigProvider()` and the requested JASPIC config provider class is found by the web application class loader, do not attempt to load the class with the class loader that loaded the JASPIC API. Patch provided by Lazar. (markt)
- 61783: When calling `AuthConfigFactory.removeRegistration()` and the registration is persistent, it should be removed from the persistent store. Patch provided by Lazar. (markt)
- 61784: Correctly handle the case when `AuthConfigFactoryImpl.registerConfigProvider()` is called with a provider name of `null`. Patch provided by Lazar. (markt)
- 61795: Add a property to the `Authenticator` implementations to enable a custom JASPIC `CallbackHandler` to be specified. Patch provided by Lazar. (markt)

#### Coyote

- 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)
- 60762: Add the ability to make changes to the TLS configuration of a connector at runtime without having to restart the Connector. (markt)
- 61568: Avoid a potential `SecurityException` when using the NIO2 connector and a new thread is added to the pool. (markt)
- 61583: Correct a further regression in the fix to enable the use of Java key stores that contained multiple keys that did not all have the same password. This fixes PKCS11 key store handling with multiple keys selected with an alias. (markt)
- Reduce default HTTP/2 stream concurrent execution within a connection from 200 to 20. (remm)
- 61668: Avoid a possible NPE when calling `AbstractHttp11Protocol.getSSLProtocol()`. (markt)
- 61673: Avoid a possible `ConcurrentModificationException` when working with the streams associated with a connection. (markt)
- 61719: Avoid possible NPE calling InputStream.setReadListener with HTTP/2. (remm)
- 61736: Improve performance of NIO connector when clients leave large time gaps between network packets. Patch provided by Zilong Song. (markt)
- 61740: Correct an off-by-one error in the Hpack header index validation that caused intermittent request failures when using HTTP/2. (markt)

#### Jasper

- 61816: Invalid expressions in attribute values or template text should trigger a translation (compile time) error, not a run time error. (markt)

#### WebSocket

- 61604: Add support for authentication in the websocket client. Patch submitted by J Fernandez. (remm)

#### Web applications

- Enable Javadoc to be built with Java 9. (markt)
- 61603: Add XML filtering for the status servlet output where needed. (remm)
- Correct the description of how the CGI servlet maps a request to a script in the CGI How-To. (markt)

#### Tribes

- Fix incorrect behavior that attempts to resend channel messages more than the actual setting value of `maxRetryAttempts`. (kfujino)
- Ensure that the remaining Sender can send channel messages by avoiding unintended `ChannelException` caused by comparing the number of failed members and the number of remaining Senders. (kfujino)
- Ensure that remaining SelectionKeys that were not handled by throwing a `ChannelException` during SelectionKey processing are handled. (kfujino)

#### Other

- Improve the fix for 61439 and exclude the JPA, JAX-WS and EJB annotations completely from the Tomcat distributions. (markt)
- Improve handling of endorsed directories. The endorsed directory mechanism will only be used if the `JAVA_ENDORSED_DIRS` system property is explicitly set or if `$CATALINA_HOME/endorsed` exists. When running on Java 9, any such attempted use of the endorsed directory mechanism will trigger an error and Tomcat will fail to start. (rjung)
- Refactoring in preparation for Java 9. Refactor to avoid using some methods that will be deprecated in Java 9 onwards. (markt)
- 51496: When using the Windows installer, check if the requested service name already exists and, if it does, prompt the user to select an alternative service name. Patch provided by Ralph Plawetzki. (markt)
- Add necessary Java 9 configuration options to the startup scripts to prevent warnings being generated on web application stop. (markt)
- 61590: Enable `service.bat` to recognise when `JAVA_HOME` is configured for a Java 9 JDK. (markt)
- 61598: Update the Windows installer to search the new (as of Java 9) registry locations when looking for a JRE. (markt)
- Add generation of a SHA-512 hash for release artifacts to the build script. (markt)
- 61658: Update MIME mappings for fonts to use `font/*` as per RFC8081. (markt)
- Update the packaged version of the Tomcat Native Library to 1.2.16 to pick up the latest Windows binaries built with APR 1.6.3 and OpenSSL 1.0.2m. (markt)
- Update the NSIS Installer used to build the Windows installer to version 3.02.1. (kkolinko)
- Update the Windows installer to use "The Apache Software Foundation" as the Publisher when Tomcat is displayed in the list of installed applications in Microsoft Windows. (kkolinko)
- 61803: Remove outdated SSL information from the Security documentation. (remm)

### 2017-10-01 Tomcat 8.5.23 (markt)

#### Catalina

- Use the correct path when loading the JVM `logging.properties` file for Java 9. (rjung)
- Add additional validation to the resource handling required to fix CVE-2017-12617 on Windows. The checks were being performed elsewhere but adding them to the resource handling ensures that the checks are always performed. (markt)
- 61554: Exclude test files in unusual encodings and markdown files intended for display in GitHub from RAT analysis. Patch provided by Chris Thistlethwaite. (markt)

#### Other

- 61563: Correct typos in Spanish translation. Patch provided by Gonzalo Vásquez. (csutherl)

### not released Tomcat 8.5.22 (markt)

#### Catalina

- 60963: Add `ExtractingRoot`, a new `WebResourceRoot` implementation that extracts JARs to the work directory for improved performance when deploying packed WAR files. (markt)
- Add an option to reject requests that contain HTTP headers with invalid (non-token) header names with a 400 response. (markt)
- 61542: Fix CVE-2017-12617 and prevent JSPs from being uploaded via a specially crafted request when HTTP PUT was enabled. (markt)
- Implement the requirements of RFC 7230 (and RFC 2616) that HTTP/1.1 requests must include a `Host` header and any request that does not must be rejected with a 400 response. (markt)
- Implement the requirements of RFC 7230 that any HTTP/1.1 request that specifies a host in the request line, must specify the same host in the `Host` header and that any such request that does not, must be rejected with a 400 response. This check is optional but disabled by default. It may be enabled with the `allowHostHeaderMismatch` attribute of the Connector. (markt)
- Implement the requirements of RFC 7230 that any HTTP/1.1 request that contains multiple `Host` headers is rejected with a 400 response. (markt)

#### Coyote

- Add a way to set the property source in embedded mode. (remm)
- 61557: Correct a further regression in the fix to enable the use of Java key stores that contain multiple keys that do not all have the same password. The regression broke support for some FIPS compliant key stores. (markt)

#### jdbc-pool

- 61545: Correctly handle invocations of methods defined in the `PooledConnection` interface when using pooled XA connections. Patch provided by Nils Winkler. (markt)

#### Other

- Update fix for 59904 so that values less than zero are accepted instead of throwing a NegativeArraySizeException. (remm)

### 2017-09-19 Tomcat 8.5.21 (markt)

#### Catalina

- Before generating an error page in the `ErrorReportValve`, check to see if I/O is still permitted for the associated connection before generating the error page so that the page generation can be skipped if the page is never going to be sent. (markt)
- 61189: Add the ability to set environment variables for individual CGI scripts. Based on a patch by jm009. (markt)
- 61210: When running under a SecurityManager, do not print a warning about not being able to read a logging configuration file when that file does not exist. (markt)
- 61280: Add RFC 7617 support to the `BasicAuthenticator`. Note that the default configuration does not change the existing behaviour. (markt)
- 61424: Avoid a possible `StackOverflowError` when running under a `SecurityManager` and using `Subject.doAs()`. (markt)

#### Coyote

- The minimum required Tomcat Native version has been increased to 1.2.14. This version includes a new API needed for correct client certificate support when using a Java connector with OpenSSL TLS implementation and support for the `SSL_CONF` OpenSSL API. (rjung)
- Add support for the OpenSSL `SSL_CONF` API when using TLS with OpenSSL implementation. It can be used by adding `OpenSSLConf` elements underneath `SSLHostConfig`. The new element contains a list of `OpenSSLConfCmd` elements, each with the attributes `name` and `value`. (rjung)
- When using a Java connector in combination with the OpenSSL TLS implementation, do not configure each SSL connection object via the OpenSSLEngine. For OpenSSL the SSL object inherits its settings from the SSL_CTX which we have already configured. (rjung)
- When using JSSE TLS configuration with the OpenSSL implementation and client certificates: include client CA subjects in the TLS handshake so that the client can choose an appropriate client certificate to present. (rjung)
- If an invalid option is specified for the `certificateVerification` attribute of an `SSLHostConfig` element, treat it as `required` which is the most secure / restrictive option in addition to reporting the configuration error. (markt)
- Improve the handling of client disconnections during the TLS renegotiation handshake. (markt)
- Prevent exceptions being thrown during normal shutdown of NIO connections. This enables TLS connections to close cleanly. (markt)
- Fix possible race condition when setting IO listeners on an upgraded connection. (remm)
- 48655: Enable Tomcat to shutdown cleanly when using sendfile, the APR/native connector and a multi-part download is in progress. (markt)
- 58244: Handle the case when OpenSSL resumes a TLS session using a ticket and the full client certificate chain is not available. In this case the client certificate without the chain will be presented to the application. (markt)
- Improve the warning message when JSSE and OpenSSL configuration styles are mixed on the same `SSLHostConfig`. (markt)
- 61415: Fix TLS renegotiation with OpenSSL based connections and session caching. (markt)
- Delay checking that the configured attributes for an `SSLHostConfig` instance are consistent with the configured SSL implementation until `Connector` start to avoid incorrect warnings when the SSL implementation changes during initialisation. (markt)
- 61450: Fix default key alias algorithm. (remm)
- 61451: Correct a regression in the fix to enable the use of Java key stores that contained multiple keys that did not all have the same password. The regression broke support for any key store that did not store keys in PKCS #8 format such as hardware key stores and Windows key stores. (markt)

#### WebSocket

- 60523: Reduce the number of packets used to send WebSocket messages by not flushing between the header and the payload when the two are written together. (markt)
- 61491: When using the `permessage-deflate` extension, correctly handle the sending of empty messages after non-empty messages to avoid the `IllegalArgumentException`. (markt)

#### Web applications

- Show connector cipher list in the manager web application in the correct cipher order. (rjung)

#### Tribes

- To avoid unexpected session timeout notification from backup session, update the access time when receiving the map member notification message. (kfujino)
- Add member info to the log message when the failure detection check fails in `TcpFailureDetector`. (kfujino)
- Avoid Ping timeout until the added map member by receiving `MSG_START` message is completely started. (kfujino)
- When sending a channel message, make sure that the Sender has connected. (kfujino)
- Correct the backup node selection logic that node 0 is returned twice consecutively. (kfujino)
- Fix race condition of `responseMap` in `RpcChannel`. (kfujino)

#### jdbc-pool

- 61391: Ensure that failed queries are logged if the `SlowQueryReport` interceptor is configured to do so and the connection has been abandoned. Patch provided by Craig Webb. (markt)
- 61425: Ensure that transaction of idle connection has terminated when the `testWhileIdle` is set to `true` and `defaultAutoCommit` is set to `false`. Patch provided by WangZheng. (kfujino)

#### Other

- 61439: Remove the Java Annotation API classes from tomcat-embed-core.jar and package them in a separate JAR in the embedded distribution to provide end users with greater flexibility to handle potential conflicts with the JRE and/or other JARs. (markt)
- 61441: Improve the detection of `JAVA_HOME` by the `daemon.sh` script when running on a platform where Java has been installed from an RPM. (rjung)
- Update the packaged version of the Tomcat Native Library to 1.2.14 to pick up the latest Windows binaries built with APR 1.6.2 and OpenSSL 1.0.2l. (markt)
- 61599: Update to Commons Daemon 1.1.0 for improved Java 9 support. (markt)

### 2017-08-08 Tomcat 8.5.20 (markt)

#### Catalina

- Revert the fix for 49464 since it continued to trigger regressions. (markt)
- Correct a bug in the `PushBuilder` implementation that meant push URLs containing `%nn` sequences were not correctly decoded. Identified by FindBugs. (markt)
- 61164: Add support for the `%X` pattern in the `AccessLogValve` that reports the connection status at the end of the request. Patch provided by Zemian Deng. (markt)
- 61351: Correctly handle %nn decoding of URL patterns in web.xml and similar locations that may legitimately contain characters that are not permitted by RFC 3986. (markt)
- 61366: Add a new attribute, `localDataSource`, to the `JDBCStore` that allows the Store to be configured to use a DataSource defined by the web application rather than the default of using a globally defined DataSource. Patch provided by Jonathan Horowitz. (markt)

#### Coyote

- 61086: Ensure to explicitly signal an empty request body for HTTP 205 responses. Additional fix to r1795278. Based on a patch provided by Alexandr Saperov. (violetagg)
- 61345: Add a server listener that can be used to do system property replacement from the property source configured in the digester. (remm)
- Add additional logging to record problems that occur while waiting for the NIO pollers to stop during the Connector stop process. (markt)

#### Jasper

- 61364: Ensure that files are closed after detecting encoding of JSPs so that files do not remain locked by the file system. (markt)

#### WebSocket

- 57767: Add support to the WebSocket client for following redirects when attempting to establish a WebSocket connection. Patch provided by J Fernandez. (markt)

### 2017-07-28 Tomcat 8.5.19 (markt)

#### Catalina

- Performance improvements for service loader look-ups (and look-ups of other class loader resources) when the web application is deployed in a packed WAR file. (markt)
- 61253: Add warn message when Digester.updateAttributes throws an exception instead of ignoring it. (csutherl)
- Correct a further regression in the fix for 49464 that could cause an byte order mark character to appear at the start of content included by the `DefaultServlet`. (markt)
- 61313: Make the read timeout configurable in the `JNDIRealm` and ensure that a read timeout will result in an attempt to fail over to the alternateURL. Based on patches by Peter Maloney and Felix Schumacher. (markt)

#### Web applications

- Correct the documentation for how `StandardRoot` is configured. (markt)

#### Other

- 61316: Fix corruption of UTF-16 encoded source files in released source distributions. (markt)

### not released Tomcat 8.5.18 (markt)

#### Catalina

- 61232: When log rotation is disabled only one separator will be used when generating the log file name. For example if the prefix is `catalina.` and the suffix is `.log` then the log file name will be `catalina.log` instead of `catalina..log`. Patch provided by Katya Stoycheva. (violetagg)
- 61264: Correct a regression in the refactoring to use `Charset` rather than `String` to store request character encoding that prevented `getReader()` throwing an `UnsupportedEncodingException` if the user agent specifies an unsupported character encoding. (markt)
- Correct a regression in the fix for 49464 that could cause an incorrect `Content-Length` header to be sent by the `DefaultServlet` if the encoding of a static is not consistent with the encoding of the response. (markt)

#### Coyote

- Enable TLS connectors to use Java key stores that contain multiple keys where each key has a separate password. Based on a patch by Frank Taffelt. (markt)
- Improve the handling of HTTP/2 stream resets due to excessive headers when a continuation frame is used. (markt)

#### Jasper

- 53031: Add support for the `fork` option when compiling JSPs with the Jasper Ant task and javac. (markt)

#### Other

- 52791: Add the ability to set the defaults used by the Windows installer from a configuration file. Patch provided by Sandra Madden. (markt)

### not released Tomcat 8.5.17 (markt)

#### Catalina

- 49464: Improve the Default Servlet's handling of static files when the file encoding is not compatible with the required response encoding. (markt)
- 61214: Remove deleted attribute `servlets` from the Context MBean description. Patch provided by Alexis Hassler. (markt)
- 61215: Correctly define `addConnectorPort` and `invalidAuthenticationWhenDeny` in the `mbean-descriptors.xml` file for the `org.apache.catalina.valves` package so that the attributes are accessible via JMX. (markt)
- Make asynchronous error handling more robust. In particular ensure that `onError()` is called for any registered `AsyncListener`s after an I/O error on a non-container thread. (markt)
- Additional permission for deleting files is granted to JULI as it is required by FileHandler when running under a Security Manager. The thread that cleans the log files is marked as daemon thread. (violetagg)
- 61229: Correct a regression in 8.5.15 that broke WebDAV handling for resources with names that included a `&` character. (markt)

#### Coyote

- Restore the ability to configure support for SSLv3. Enabling this protocol will trigger a warning in the logs since it is known to be insecure. (markt)
- Do not log a warning when a `null` session is returned for an OpenSSL based TLS session since this is expected when session tickets are enabled. (markt)
- When the access log valve logs a TLS related request attribute and the NIO2 connector is used with OpenSSL, ensure that the TLS attributes are available to the access log valve when the connection is closing. (markt)
- 60461: Sync SSL session access for the APR connector. (remm)
- To ease migration from 8.0.x to 8.5.x, if the HTTP or AJP BIO connector is explicitly configured, rather than failing to start the connector because BIO has been removed, automatically switch to NIO and continue. A warning will be logged to alert the user to the switch. (markt)

#### Web applications

- Remove references to the Loader attribute `searchExternalFirst` from the documentation since the attribute is no longer supported. (markt)

### 2017-06-26 Tomcat 8.5.16 (markt)

#### Catalina

- 61072: Respect the documentation statements that allow using the platform default secure random for session id generation. (remm)
- Correct the javadoc for `o.a.c.connector.CoyoteAdapter#parseSessionCookiesId`. Patch provided by John Andrew (XUZHOUWANG) via Github. (violetagg)
- 61101: CORS filter should set Vary header in response. Submitted by Rick Riemer. (remm)
- 61105: Add a new JULI FileHandler configuration for specifying the maximum number of days to keep the log files. (violetagg)
- 61125: Ensure that `WarURLConnection` returns the correct value for calls to `getLastModified()` as this is required for the correct detection of JSP modifications when the JSP is packaged in a WAR file. (markt)
- Improve the `SSLValve` so it is able to handle client certificate headers from Nginx. Based on a patch by Lucas Ventura Carro. (markt)
- 61134: Do not use '[' and ']' symbols around substituted text fragments when generating the default error pages. Patch provided by Katya Todorova. (violetagg)
- 61154: Allow the Manager and Host Manager web applications to start by default when running under a security manager. This was accomplished by adding a custom permission, `org.apache.catalina.security.DeployXmlPermission`, that permits an application to use a `META-INF/context.xml` file and then granting that permission to the Manager and Host Manager. (markt)
- 61173: Polish the javadoc for `o.a.catalina.startup.Tomcat`. Patch provided by peterhansson_se. (violetagg)
- A new configuration property `crawlerIps` is added to the `o.a.catalina.valves.CrawlerSessionManagerValve`. Using this property one can specify a regular expression that will be used to identify crawlers based on their IP address. Based on a patch provided by Tetradeus. (violetagg)
- 61180: Log a warning message rather than an information message if it takes more than 100ms to initialised a `SecureRandom` instance for a web application to use to generate session identifiers. Patch provided by Piotr Chlebda. (markt)
- 61185: When an asynchronous request is dispatched via `AsyncContext.dispatch()` ensure that `getRequestURI()` for the dispatched request matches that of the original request. (markt)
- 61197: Ensure that the charset name used in the `Content-Type` header has exactly the same form as that provided by the application. This reverts a behavioural change in 8.5.15 that caused problems for some clients. (markt)
- 61201: Ensure that the `SCRIPT_NAME` environment variable for CGI executables is populated in a consistent way regardless of how the CGI servlet is mapped to a request. (markt)

#### Coyote

- 61086: Explicitly signal an empty request body for HTTP 205 responses. (markt)
- 61120: Do not ignore path parameters when processing HTTP/2 requests. (markt)
- Revert a change introduced in the fix for bug 60718 that changed the status code recorded in the access log when the client dropped the connection from 200 to 500. (markt)
- Add additional syncs to the SSL session object provided by the OpenSSL engine so that a concurrent destruction cannot cause a JVM crash. (remm)
- 61195: Backport, with deprecation where appropriate, the endpoint and protocol property changes from 9.0.x to ease migration from 8.5.x to 9.0.x. (markt)

#### Jasper

- 44787: Improve error message when JSP compiler configuration options are not valid. (markt)
- 61137: `j.s.jsp.tagext.TagLibraryInfo#uri` and `j.s.jsp.tagext.TagLibraryInfo#prefix` fields should not be final. Patch provided by Katya Todorova. (violetagg)

#### WebSocket

- Correct the log message when a `MessageHandler` for `PongMessage` does not implement `MessageHandler.Whole`. (rjung)
- 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)
- Improve thread-safety of `Future`s used to report the result of sending WebSocket messages. (markt)
- 61183: Correct a regression in the previous fix for 58624 that could trigger a deadlock depending on the locking strategy employed by the client code. (markt)

#### Web applications

- Better document the meaning of the trimSpaces option for Jasper. (markt)
- 61150: Configure the Manager and Host-Manager web applications to permit serialization and deserialization of CRSFPreventionFilter related session objects to avoid warning messages and/or stack traces on web application stop and/or start when running under a security manager. (markt)
- Correct the TLS configuration documentation to remove SSLv2 and SSLv3 from the list of supported protocols. (markt)

#### Tribes

- Add JMX support for Tribes components. (kfujino)

#### Other

- 45832: Add HTTP DIGEST authentication support to the Catalina Ant tasks used to communicate with the Manager application. (markt)
- 45879: Add the `RELEASE-NOTES` file to the root of the installation created by the Tomcat installer for Windows to make it easier for users to identify the installed Tomcat version. (markt)
- 61055: Clarify the code comments in the rewrite valve to make clear that there are no plans to provide proxy support for this valve since Tomcat does not have proxy capabilities. (markt)
- 61076: Document the `altDDName` attribute for the `Context` element. (markt)
- Correct typo in Jar Scan Filter Configuration Reference. Issue reported via comments.apache.org. (violetagg)
- 61145: Add missing `@Documented` annotation to annotations in the annotations API. Patch provided by Katya Todorova. (markt)
- 61146: Add missing `lookup()` method to `@EJB` annotation in the annotations API. Patch provided by Katya Todorova. (markt)
- Correct typo in Context Container Configuration Reference. Patch provided by Katya Todorova. (violetagg)

### 2017-05-10 Tomcat 8.5.15 (markt)

#### 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)
- Switch to using `Charset` rather than `String` to store encoding settings (including for configuration and for the `Content-Type header`) 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)
- 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)

#### 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

- 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)

#### 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)
- Review i18n property files, remove unnecessary escaping and consistently use `[...]` to delimit inserted values. (markt)

### 2017-04-18 Tomcat 8.5.14 (markt)

#### Catalina

- 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)
- 60926: Ensure `o.a.c.core.ApplicationContextFacade#setSessionTimeout` will invoke the correct method when running Tomcat with security manager. (markt)
- Update the early access Servlet 4.0 API implementation to reflect the change in method name from `getPushBuilder()` to `newPushBuilder()`. (markt)
- 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)
- 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 `NullPointerException`s 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

- 60925: Improve the handling of access to properties defined by interfaces when a `BeanELResolver` is used under a `SecurityManager`. (markt)

#### 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

- Correct comments about Java 8 in `Jre8Compat`. Patch provided by fibbers via Github. (violetagg)
- 60932: Correctly escape single quotes when used in i18n messages. Based on a patch by Michael Osipov. (markt)
- Update the custom Ant task that integrates with the Symantec code signing service to use the now mandatory 2-factor authentication. (markt)

### 2017-03-30 Tomcat 8.5.13 (markt)

#### Catalina

- 54618: Add support to the `HttpHeaderSecurityFilter` for the HSTS preload parameter. (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 8.5.12 for the Servlet 4.0 API early preview changes. (markt)
- Align `PushBuilder` API with changes from Servlet expert group. (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

- 60362: Add a new Connector configuration `sendReasonPhrase`. When this attribute is set to `true`, a reason phrase will be sent with the response. By default a reason phrase will not be sent. This option is deprecated and is not available in Tomcat 9. (violetagg)
- 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)
- 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

- Improve the error handling for simple tags to ensure that the tag is released and destroyed once used. (remm, violetagg)
- 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)

### 2017-03-13 Tomcat 8.5.12 (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)
- 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)
- 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 `RegistrationListener`s 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 `org.apache.catalina.servlet4preview` package that can be used to gain early access to Servlet 4.0 features 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)
- 59807: Provide a better error message when there is no SSLHostConfig defined with a `hostName` that matches the `defaultSSLHostConfigName` for the associated Connector. (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)
- 60594: Allow some invalid characters that were recently restricted to be processed in requests by using the system property `tomcat.util.http.parser.HttpParser.requestTargetAllow`. (csutherl)
- 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)
- 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 `ELContextListener`s are fired. (markt)
- Refactor code generated for JSPs to reduce the size of the code required for tags. (markt)
- 60769: Correct a regression in the XML encoding detection refactoring carried out for 8.5.10 that incorrectly always used the detected BOM encoding in preference to any encoding specified in the prolog. (markt)
- Update to the Eclipse JDT Compiler 4.6.1. (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)
- 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)
- Update the NSIS Installer used to build the Windows installer to version 3.01. (markt)

### 2017-01-16 Tomcat 8.5.11 (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

- Spelling corrections provided by Josh Soref. (violetagg)

### not released Tomcat 8.5.10 (markt)

#### 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)
- 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)

#### 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

- 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.
- 60344: Add a note to BUILDING.txt regarding using the source bundle with the correct line endings. (markt)
- 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.

### 2016-12-08 Tomcat 8.5.9 (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: Restore egde case for embedded allowing the connector to be removed. (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)
- 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)
- 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)
- 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

- Fix JDK version number documented in BUILDING.txt. (rjung)
- 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)
- 60467: remove problematic characters from XML documentation. Based upon a patch by Michael Osipov. (schultz)

#### 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)

### 2016-11-08 Tomcat 8.5.8 (markt)

#### Coyote

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

### not released Tomcat 8.5.7 (markt)

#### Catalina

- When creating a new Connector via JMX, ensure that both HTTP/1.1 and AJP/1.3 connectors can be created. (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)
- Introduce new methods `read(ByteBuffer)`/ `write(ByteBuffer)` in `o.a.catalina.connector.CoyoteInputStream`/ `o.a.catalina.connector.CoyoteOutputStream`. (violetagg)
- 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)
- 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)
- 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)

#### 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)

### 2016-10-10 Tomcat 8.5.6 (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)

#### 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 vales 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)
- 60139: Correct Javadocs for `PoolConfiguration.getValidationInterval` and `setValidationInterval`. Reported by Phillip Webb. (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)

### 2016-09-05 Tomcat 8.5.5 (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)
- 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)
- 59839: Apply `roleSearchAsUser` to all nested searches in JNDIRealm. (fschumacher)
- 59859: Fix resource leak in WebDAV servlet. Based on patch by Coty Sutherland. (fschumacher)
- 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)
- 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)
- 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 `ResourceLink`s 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)
- 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)

#### 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)
- 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)
- 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)
- 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)

#### 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)

### 2016-07-12 Tomcat 8.5.4 (markt)

#### Catalina

- 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)
- 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)
- 59708: Modify the LockOutRealm logic. Valid authentication attempts during the lock out period will no longer reset the lock out timer to zero. (markt)
- Improve error handling around user code prior to calling `InstanceManager.destroy()` to ensure that the method is executed. (markt)

#### Coyote

- Refactor the certificate keystore and trust store generation to make it easier for embedded users to inject their own key stores. (markt)
- 59233: Add the ability to add TLS virtual hosts dynamically. (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)
- 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 `IOException`s 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)

#### 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)

#### 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

- 59276: Update optional Checkstyle library to 6.17. (kkolinko)
- 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)
- Use UTF-8 with a standard prolog for all XML files. (markt)

### 2016-06-13 Tomcat 8.5.3 (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)
- Fix a cause of multiple attempts to close the same socket. (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)

#### 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)
- 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)

### 2016-05-16 Tomcat 8.5.2 (markt)

#### Catalina

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

### not released Tomcat 8.5.1 (markt)

#### Catalina

- 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 in 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)
- Add the `org.apache.catalina.servlet4preview` package that can be used to gain early access to Servlet 4.0 features. Note that this package will not be present in Tomcat 9. (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 8 requires Java 7 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

- 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)
- When running on Java 7, exclude DHE ciphers from the default cipher list for JSSE connectors since they use weak 768 bit DH keys and cannot be configured to use more secure 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)
- Return back a container specific extension to the WsServerContainer to allow frameworks to more easily dispatch requests to WebSocket endpoints. (violetagg)
- 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

- 59210: Server push example has to use `o.a.catalina.connector.RequestFacade` when obtaining `o.a.catalina.core.ApplicationPushBuilder`. Patch is provided by Huxing Zhang. (violetagg)
- 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 log of when received an unexpected messages. (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

- 59209: Remove `honorCipherOrder=false` attribute from the connector example in server.xml. When the block is uncommented the connector will use the default value for this attribute which is `false`. If one needs to enable it, one can add it explicitly to the connector definition. Use of this feature requires Java 8 or later. Patch is provided by Huxing Zhang. (violetagg)
- 59211: Add hamcrest to Eclipse classpath. Patch is provided by Huxing Zhang. (violetagg)
- 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)

### 2016-03-24 Tomcat 8.5.0 (markt)

#### General

- 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)
- 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)
- 58351: Make the server build date and server version number accessible via JMX. Patch provided by Huxing Zhang. (markt)
- 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)
- 58768: Log a warning if a redirect fails because of an invalid location. (markt)
- 58827: Remove remains of JSR-77 implementation. (markt)
- 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)
- 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)
- 58905: Ensure that `Tomcat.silence()` silences the correct logger and respects the current setting. (markt)
- 58946: Ensure that the request parameter map remains immutable when processing via a RequestDispatcher. (markt)
- 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)
- 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 `Realm`s. (schultz/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)
- 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)
- 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)
- 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

- 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)
- 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)

#### 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)
- 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)
- 58624: Correct a potential deadlock if the WebSocket connection is closed when a message write is in progress. (markt)
- 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

- 48674: Implement an option within the Host Manager web application to persist the current configuration. Based on a patch by Coty Sutherland. (markt)
- 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)
- 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)
- 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

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

#### 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

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