java.lang.NullPointerException

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  • Server session hangs.
    via GitHub by rminchev1
    ,
    • java.lang.NullPointerException at net.hawkengine.ws.SessionPool.lambda$sendToUserSessions$0(SessionPool.java:73) at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:174) at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1374) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499) at net.hawkengine.ws.SessionPool.sendToUserSessions(SessionPool.java:74) at net.hawkengine.ws.WsEndpoint.onWebSocketConnect(WsEndpoint.java:100) at org.eclipse.jetty.websocket.common.events.JettyListenerEventDriver.onConnect(JettyListenerEventDriver.java:106) at org.eclipse.jetty.websocket.common.events.AbstractEventDriver.openSession(AbstractEventDriver.java:229) at org.eclipse.jetty.websocket.common.WebSocketSession.open(WebSocketSession.java:489) at org.eclipse.jetty.websocket.common.WebSocketSession.onOpened(WebSocketSession.java:423) at org.eclipse.jetty.io.AbstractConnection.onOpen(AbstractConnection.java:198) at org.eclipse.jetty.websocket.common.io.AbstractWebSocketConnection.onOpen(AbstractWebSocketConnection.java:562) at org.eclipse.jetty.io.AbstractEndPoint.upgrade(AbstractEndPoint.java:201) at org.eclipse.jetty.server.HttpConnection.onCompleted(HttpConnection.java:369) at org.eclipse.jetty.server.HttpChannel.onCompleted(HttpChannel.java:611) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:442) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:244) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:273) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95) at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93) at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceAndRun(ExecuteProduceConsume.java:246) at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:156) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:654) at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:572) at java.lang.Thread.run(Thread.java:745)
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