`BinaryStreamTest.testMoreThanLargestMessageOneByteAtATime()` is flaky

[lorban]

Jetty version(s)
12.1.x

Description

org.eclipse.jetty.ee11.websocket.jakarta.tests.server.BinaryStreamTest.testMoreThanLargestMessageOneByteAtATime() sometimes fails with:

java.lang.NullPointerException: Cannot invoke "org.eclipse.jetty.websocket.core.Frame.getOpCode()" because "frame" is null
	at org.eclipse.jetty.ee11.websocket.jakarta.tests.WebSocketTester.expectMessage(WebSocketTester.java:222)
	at org.eclipse.jetty.ee11.websocket.jakarta.tests.server.BinaryStreamTest.testMoreThanLargestMessageOneByteAtATime(BinaryStreamTest.java:139)

See: https://jenkins.webtide.net/blue/organizations/jenkins/jetty.project/detail/PR-14433/21/tests

[lachlan-roberts]

There were some additional log lines which was added recently to help debug this flaky test since I could not reproduce it locally.

Unfortunately since it has been 2 weeks, I think the logs from the linked test failure have now been deleted.

So please link this failure here again if you see it.