Error when using websocket with wildfly 9.0.2.Final --------------------------------------------------- Key: WFLY-6161 URL: https://issues.jboss.org/browse/WFLY-6161 Project: WildFly Issue Type: Bug Components: IO Affects Versions: 9.0.2.Final Reporter: taha eddahabi Assignee: Jason Greene Priority: Blocker When my web application deployed in wildfly 9.0.2.final try to send a websocket (using the method RemoteEndPoint .sendObject of javax.websocket-api-1.1 ). I get this error : {code:java} [org.xnio.http.HttpUpgrade$HttpUpgradeState.handleUpgrade(HttpUpgrade.java:490), org.xnio.http.HttpUpgrade$HttpUpgradeState.access$1200(HttpUpgrade.java:165), org.xnio.http.HttpUpgrade$HttpUpgradeState$UpgradeResultListener.handleEvent(HttpUpgrade.java:461), org.xnio.http.HttpUpgrade$HttpUpgradeState$UpgradeResultListener.handleEvent(HttpUpgrade.java:400), org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92), org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66), org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:88), org.xnio.nio.WorkerThread.run(WorkerThread.java:539)] Line Number : 490"} {code}