Special Thanks to the following Eclipse Jetty community members

Changelog

#12603 - ee9 / UnsupportedOperationException: Read Only
#12579 - restore abort for SendCallback.failed
#12578 - HttpServletRequest.getParameterMap - UnmodifiableMap does not wrap a jetty MultiMap
#12577 - org.eclipse.jetty.http.HttpURI.getDecodedPath() throws an NPE when there is no path
#12554 - Improve documentation for ambiguous URIs
#12553 - Execute immediately HTTP/2 failures
#12520 - Numerous stack traces logged at warning level when running under HTTP/2
#12488 - HTTP/2 headers may not be split in CONTINUATION frames
#12482 - CustomRequestLog %q inconsistency with a doc
#12481 - Exception when a Content-Length is set on a 304 response
#12469 - Content.Sink.write(sink, last, utf8Content, callback) could become faster
#12429 - HandshakeRequest getHeaders are case sensitive.
#12323 - AsyncMiddleManServlet response flushing
#12272 - Potential deadlock with Vaadin
#12153 - Failed to serve resource java.lang.IllegalStateException: s=HANDLING rs=ASYNC os=OPEN is=IDLE awp=false se=false i=true al=0
#11413 - Conscrypt does not support server-side SNI
#9529 - Expose TCP connection establishment information (@arsenalzp)