H2 Synchronization problem with tests that are sending duplicate frames

[loriadi]

Scenario:

1. The H2 test sends two identical Headers frames, both with eos set
2. The server starts to process the first frame on stream 3, and gets interrupted part way through processing. At this point the stream is in HALF_CLOSED_REMOTE state. We have read in the headers but have not sent the request on to be processed.
3. The second identical frame comes in for stream 3 with eos set.
4. The server recognizes that the stream is closing, can't accept a new read frame and sends a goaway frame saying the stream is already closed.
5. The server cleans up all things stream 3 related.
6. The server then gets back to processing the original valid HEADERS frame, but the resources have been deleted, and we get the NPE.

[loriadi]

Exception = java.lang.NullPointerException
Source = com.ibm.ws.http.channel.internal.inbound.HttpInboundServiceContextImpl.init
probeid = 1
Stack Dump = java.lang.NullPointerException
at com.ibm.ws.tcpchannel.internal.TCPConnLink.getRemoteAddress(TCPConnLink.java:367)
at com.ibm.ws.http.channel.h2internal.H2TCPConnectionContext.getRemoteAddress(H2TCPConnectionContext.java:58)
at com.ibm.ws.http.channel.internal.HttpServiceContextImpl.init(HttpServiceContextImpl.java:916)
at com.ibm.ws.http.channel.internal.inbound.HttpInboundServiceContextImpl.init(HttpInboundServiceContextImpl.java:119)
at com.ibm.ws.http.channel.internal.inbound.HttpInboundLink.ready(HttpInboundLink.java:298)
at com.ibm.ws.http.channel.h2internal.H2StreamProcessor$Http2Ready.run(H2StreamProcessor.java:1597)
at com.ibm.ws.threading.internal.ExecutorServiceImpl$RunnableWrapper.run(ExecutorServiceImpl.java:239)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:825)
]
at componenttest.custom.junit.runner.FATRunner.blowup(FATRunner.java:296)
at componenttest.custom.junit.runner.FATRunner.access$500(FATRunner.java:64)
at componenttest.custom.junit.runner.FATRunner$1.evaluate(FATRunner.java:246)
at componenttest.custom.junit.runner.FATRunner$2.evaluate(FATRunner.java:314)
at componenttest.custom.junit.runner.FATRunner.run(FATRunner.java:167)