NPE in Http2PriorityTree$Http2PriorityNode.addDependent ------------------------------------------------------- Key: WFLY-6688 URL: https://issues.jboss.org/browse/WFLY-6688 Project: WildFly Issue Type: Bug Components: Web (Undertow) Affects Versions: 10.0.0.Final Reporter: Juergen Zimmermann Assignee: Stuart Douglas I'm using Windows 8.1 with JDK 8u92, WildFly 10.0.0.Final (Undertow 1.3.15) and alpn-boot 8.1.8.v20160420. When accessing any JSF-based web page (via Chrome) I get the following stacktrace. The REST clients are not using HTTP/2 and work fine. {{ERROR [org.xnio.listener] XNIO001007: A channel event listener threw an exception: java.lang.NullPointerException at io.undertow.protocols.http2.Http2PriorityTree$Http2PriorityNode.addDependent(Http2PriorityTree.java:248) at io.undertow.protocols.http2.Http2PriorityTree$Http2PriorityNode.exclusive(Http2PriorityTree.java:258) at io.undertow.protocols.http2.Http2PriorityTree.registerStream(Http2PriorityTree.java:65) at io.undertow.protocols.http2.Http2Channel.createChannel(Http2Channel.java:310) at io.undertow.protocols.http2.Http2Channel.createChannel(Http2Channel.java:60) at io.undertow.server.protocol.framed.AbstractFramedChannel.receive(AbstractFramedChannel.java:433) at io.undertow.server.protocol.http2.Http2ReceiveListener.handleEvent(Http2ReceiveListener.java:103) at io.undertow.server.protocol.http2.Http2ReceiveListener.handleEvent(Http2ReceiveListener.java:56) at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92) at io.undertow.server.protocol.framed.AbstractFramedChannel$FrameReadListener.handleEvent(AbstractFramedChannel.java:872) at io.undertow.server.protocol.framed.AbstractFramedChannel$FrameReadListener.handleEvent(AbstractFramedChannel.java:853) at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92) at org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66) at io.undertow.protocols.ssl.SslConduit$SslReadReadyHandler.readReady(SslConduit.java:1059) at io.undertow.protocols.ssl.SslConduit$1.run(SslConduit.java:229) at org.xnio.nio.WorkerThread.safeRun(WorkerThread.java:580) at org.xnio.nio.WorkerThread.run(WorkerThread.java:464)}}