NullPointerException with JDK9 + wildfly-openssl + Http2 utilized ----------------------------------------------------------------- Key: WFLY-9673 URL: https://issues.jboss.org/browse/WFLY-9673 Project: WildFly Issue Type: Bug Components: Web (Undertow) Reporter: Jan Stourac Assignee: Stuart Douglas I can see bunch of NPEs and IllegalStateExceptions when I execute [http2 testsuite|https://github.com/summerwind/h2spec] against running Wildfly server (build from master/62583a78a850ba3fb182dda9b5ed35d99e016960 revision) running with JDK9 and wildfly-openssl (my openssl version is {{OpenSSL 1.1.0g-fips 2 Nov 2017}}): {code} 2018-01-15 13:15:04,095 ERROR [io.undertow.request.io] (default I/O-16) UT005090: Unexpected failure: java.lang.NullPointerException at io.undertow.core//io.undertow.protocols.http2.Http2Channel.sendPing(Http2Channel.java:794) at io.undertow.core//io.undertow.protocols.http2.Http2Channel.createChannelImpl(Http2Channel.java:489) at io.undertow.core//io.undertow.protocols.http2.Http2Channel.createChannel(Http2Channel.java:342) at io.undertow.core//io.undertow.protocols.http2.Http2Channel.createChannel(Http2Channel.java:68) at io.undertow.core//io.undertow.server.protocol.framed.AbstractFramedChannel.receive(AbstractFramedChannel.java:451) at io.undertow.core//io.undertow.server.protocol.http2.Http2ReceiveListener.handleEvent(Http2ReceiveListener.java:109) at io.undertow.core//io.undertow.server.protocol.http2.Http2ReceiveListener.handleEvent(Http2ReceiveListener.java:60) at org.jboss.xnio//org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92) at io.undertow.core//io.undertow.server.protocol.framed.AbstractFramedChannel$FrameReadListener.handleEvent(AbstractFramedChannel.java:921) at io.undertow.core//io.undertow.server.protocol.framed.AbstractFramedChannel$FrameReadListener.handleEvent(AbstractFramedChannel.java:902) at org.jboss.xnio//org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92) at org.jboss.xnio//org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66) at io.undertow.core//io.undertow.protocols.ssl.SslConduit$SslReadReadyHandler.readReady(SslConduit.java:1145) at io.undertow.core//io.undertow.protocols.ssl.SslConduit$1.run(SslConduit.java:168) at org.jboss.xnio.nio//org.xnio.nio.WorkerThread.safeRun(WorkerThread.java:612) at org.jboss.xnio.nio//org.xnio.nio.WorkerThread.run(WorkerThread.java:479) 14:32:23,593 ERROR [io.undertow.request] (default task-128) UT005071: Undertow request failed HttpServerExchange{ POST / request {Host=[127.0.0.1:8443]} response {Last-Modified=[Mon, 15 Jan 2018 07:43:34 GMT], X-Powered-By=[Undertow/1], Server=[WildFly/11], Content-Length=[2438], Content-Type=[text/html], Accept-Ranges=[bytes]}}: java.lang.IllegalStateException: UT000127: Response has already been sent at io.undertow.core//io.undertow.io.AsyncSenderImpl.send(AsyncSenderImpl.java:122) at io.undertow.core//io.undertow.server.handlers.resource.PathResource$1ServerTask.run(PathResource.java:184) at io.undertow.core//io.undertow.server.handlers.resource.PathResource.serveImpl(PathResource.java:253) at io.undertow.core//io.undertow.server.handlers.resource.PathResource.serve(PathResource.java:111) at io.undertow.core//io.undertow.server.handlers.resource.ResourceHandler$1.handleRequest(ResourceHandler.java:337) at io.undertow.core//io.undertow.server.Connectors.executeRootHandler(Connectors.java:332) at io.undertow.core//io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:830) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641) at java.base/java.lang.Thread.run(Thread.java:844) {code} All exceptions seems to repeat. This causes 16 tests to fail. When I use JDK8 or when I switch back to JSSE ALPN instead of wildfly-openssl, no test fail at all and there are no NPEs in server.log anymore, although the IllegalStateExceptions still remains there.