Jetty 9 最后一个里程碑版本发布了，可通过 http://download.eclipse.org/jetty/ 下载。
而首个 RC 版本将在未来几周内发布。
M5 较 M4 版本最大的变化就是重构了 WebSocket API，这是根据 CometD 项目的反馈做的改进。
其他方面的改进内容包括：
jetty-9.0.0.M5 - 19 January 2013
+ 367638 throw exception for excess form keys
+ 381521 Only set Vary header when content could be compressed
+ 391623 Making --stop with STOP.WAIT perform graceful shutdown
+ 393158 java.lang.IllegalStateException when sending an empty InputStream
+ 393220 remove dead code from ServletHandler and log ServletExceptions in warn instead of debug
+ 393733 WebSocketClient interface should support multiple connections
+ 395885 ResourceCache should honor useFileMappedBuffer if set
+ 396253 FilterRegistration wrong order
+ 396459 Log specific message for empty request body for multipart mime requests
+ 396500 HttpClient Exchange takes forever to complete when less content sent than Content-Length
+ 396886 MultiPartFilter strips bad escaping on filename="..."
+ 397110 Accept %uXXXX encodings in URIs
+ 397111 Tolerate empty or excessive whitespace preceeding MultiParts
+ 397112 Requests with byte-range throws NPE if requested file has no mimetype (eg no file extension)
+ 397114 run-forked with waitForChild=false can lock up
+ 397130 maxFormContentSize set in jetty.xml is ignored
+ 397190 improve ValidUrlRule to iterate on codepoints
+ 397321 Wrong condition in default start.config for annotations
+ 397535 Support pluggable alias checking to support symbolic links
+ 397769 TimerScheduler does not relinquish cancelled tasks.
+ 398105 Clean up WebSocketPolicy
+ 398285 ProxyServlet mixes cookies from different clients.
+ 398337 UTF-16 percent encoding in UTF-16 form content
+ 398582 Move lib/jta jar into lib/jndi
+ JETTY-1533 handle URL with no path
来自:开源中国社区
