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[jetty-dev] Jetty 9.4.8 Released!

The Jetty team is happy to announce the immediate availability of a new release for the Eclipse Jetty 9.4.x branch.

Jetty 9.4.8 includes a number of important bug fixes and improvements. It is recommended that all users upgrade as soon as they are able. A full list of changes for this release are listed at the end of this email.

If you are user of one of the following technologies, this upgrade is strongly encouraged:

  • Java 9 - Bytecode scanning is now supported for Java 9 classes with ASM 6.0

  • JEP 238 - Multi-Release JAR Files - The use of the new JAR file format (on both Java 8 and Java 9 runtimes) are now supported within Jetty’s bytecode scanning.

We would like to extend a special thank you to the following members of the Jetty community for their accepted commits that made it into this release:

  • Andy Wilkinson - for his updates to jetty-bom

  • Dan Smith - Issue #1885

  • David Ha - Issue #1843

  • Jesse Glick - PR #1824

  • Sebastian Haas - PR #1916

  • Steven Schlansker - Issue #1922

As a reminder, the “Patch for a Patch” promotion for Jetty is still available, so get your patches, pull requests, etc. submitted.  For each accepted patch, you are now eligible for a free Jetty embroidered patch yourself (while supplies last). We ship worldwide!

This release available on the Eclipse Jetty project download page or from the Maven Central repository:

Documentation for this release can be found on the Eclipse Jetty project site:

If you find any issues with this release, or if you want to suggest future enhancements, please file an issue on the Jetty GitHub page:

Commercial production and development support for Jetty is offered through Webtide ( Please contact us for more information or email jesse@xxxxxxxxxxx to discuss your specific needs.

Best Regards,

The Jetty Development Team

jetty-9.4.8.v20171121 - 21 November 2017

+ 212 HttpClient should support pluggable AuthenticationStore

+ 215 Add Conscrypt for native ALPN/TLS/SSL

+ 272 WebSocket hangs in blockingWrite

+ 487 JDK 9 build compatibility

+ 901 Overriding SSL context KeyStoreType requires explicit override of TrustStoreType

+ 922 Implements methods Connection.getBytes[In|Out]()

+ 1209 IllegalStateException when HTTP/2 push is disabled

+ 1213 Upgrade to ASM Version 6.0 for JDK9

+ 1509 Improve GZIPContentDecoder buffer pooling sizing

+ 1550 Resolve inconsistent Shutdown configuration with Jetty Runner

+ 1640 Introduce :run-distro goal for local jetty distribution deployment

+ 1692 Annotation scanning should ignore `module-info.class` files

+ 1696 Missing stacktraces on debug of WriteFlusher onFail

+ 1705 Rejected executions in QueuedThreadPool can lead to memory leaks

+ 1760 Update to apache jasper 8.5.20

+ 1768 Allow jetty properties to be set for the jetty:run-forked goal

+ 1782 Using assembly.tarLongFileMode=posix for jetty-home and jetty-distribution assembly

+ 1797 JEP 238 - Multi-Release JAR files break bytecode scanning

+ 1806 Improved ReservedThreads idle timeout

+ 1807 Add new HttpChannel listener and events for metrics libraries

+ 1814 Move JavaVersion to jetty-util for future Java 9 support requirements

+ 1818 Improve Infinispan support on JDK 9

+ 1819 Race condition during annotation parsing

+ 1823 ResourceHandler with ranged requests does not return Content-Type response header

+ 1829 OSGi webbundle classes scanned twice

+ 1833 Request.startAsync requires context path

+ 1835 Locker is not reentrant on ServerConnector#setConnectionFactories

+ 1836 Migrate Locker implementation to JVM ReentrantLock implementation

+ 1841 Reduce contention on ServletHolder

+ 1845 Allow null User-Agent in HttpClient

+ 1849 Refactoring of SelectorManager.defaultSchedulers()

+ 1851 Improve insufficient thread warnings/errors

+ 1854 Consistent IOException and timeout handling when extracting form parameters

+ 1856 ResourceHandler without ServletContext throws NPE for welcome files if used directly

+ 1857 GZIPContentTransformer fails to send entire message if used with BufferedContentTransformer

+ 1865 Improve Exception on invalid redirect usage

+ 1867 Improve Exception thrown during Expect 100 Continue

+ 1868 Need a way to randomly select ports for tests

+ 1871 JMXify SslContextFactory

+ 1878 Handle 100 Continue response without Expect header

+ 1879 'Bad tld url' seen during :jetty-run when running integration tests

+ 1881 Improve support of WebSocket over Unix Domain Socket

+ 1885 SessionHandler get/set maxInactiveInterval is not symmetric with negative values

+ 1888 Implement cookie matching on Path attribute per RFC 6265

+ 1891 Make HTTP/2 async error notifications configurable

+ 1892 NPE resulting from bad JEP 238 MultiReleaseJarFile structure

+ 1893 Add ability to set HttpClient Connection TTL

+ 1897 Introduce a round-robin connection pool for HttpClient

+ 1900 Update to CDI 2.0 for cdi module

+ 1901 Reimplement PathWatcher as scanner

+ 1909 Update to Apache Jasper 8.5.23

+ 1910 Remove unused jetty-jsp module

+ 1912 AbstractConnector EndPoint leak for failed SSL connections

+ 1914 HttpClient fails to parse Content-Type response header with RFC 2045 charset="utf-8" syntax

+ 1919 Review LowResourceMonitor

+ 1920 Connect Timeouts with NonBlocking CreateEndPoint

+ 1924 ManagedSelector can livelock under high load

+ 1931 Expose RolloverOutputStream for pluggable behaviour

+ 1933 Use CLASSPATH for scanning java9 system classes

+ 1956 Store and report build information of Jetty

+ 1958 Blocking Timeout has different behavior in HttpInput vs HttpOutput

+ 1970 ManagedSelector can lose selector thread under high concurrent load

+ 1980 PushCacheFilter does not push TLS offloaded HTTP/2 requests

+ 1981 Loading resource content failed

+ 1984 Remove jetty-client dependency in jetty-rewrite

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