LargeHeaderTest.testLargeHeaderNewConnectionsConcurrent is flaky

[lorban]

Jetty version(s)
12.1.x

Description

LargeHeaderTest.testLargeHeaderNewConnectionsConcurrent sometimes fails with:

java.lang.Throwable
	at org.eclipse.jetty.server@12.1.0-SNAPSHOT/org.eclipse.jetty.server.LargeHeaderTest.testLargeHeaderNewConnectionsConcurrent(LargeHeaderTest.java:183)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at java.base/java.util.concurrent.RecursiveAction.exec(RecursiveAction.java:194)
	at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:507)
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1458)
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:2034)
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:189)
	Suppressed: org.eclipse.jetty.http.HttpException$RuntimeException: 505: Unknown Version
		at org.eclipse.jetty.http@12.1.0-SNAPSHOT/org.eclipse.jetty.http.HttpParser.checkVersion(HttpParser.java:1072)
		at org.eclipse.jetty.http@12.1.0-SNAPSHOT/org.eclipse.jetty.http.HttpParser.parseLine(HttpParser.java:798)
		at org.eclipse.jetty.http@12.1.0-SNAPSHOT/org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:1639)
		at org.eclipse.jetty.http@12.1.0-SNAPSHOT/org.eclipse.jetty.http.HttpTester.parseResponse(HttpTester.java:219)
		at org.eclipse.jetty.server@12.1.0-SNAPSHOT/org.eclipse.jetty.server.LargeHeaderTest.lambda$testLargeHeaderNewConnectionsConcurrent$0(LargeHeaderTest.java:217)
		at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
		at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
		at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
		at java.base/java.lang.Thread.run(Thread.java:1575)

See: https://jenkins.webtide.net/job/jetty.project/job/jetty-12.1.x/193/testReport/junit/org.eclipse.jetty.server/LargeHeaderTest/Parallel_Stage___Build___Test___JDK23___testLargeHeaderNewConnectionsConcurrent/