Jetty provides server and clients for HTTP, Websocket and SPDY plus a javax.servlet container. The Jetty 9.1 release contains support for JSR-356 which is the new javax.websocket client and server support. It also contains the async streaming improvements added in the servlet 3.1 api, as well as all of the other additions of that specification. We have also made a number of improvements to the standard jetty-distribution to make it easier for Operations related usage scenarios.
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