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Thomas Heigl commented on WICKET-6758: -------------------------------------- Thanks [~mgrigorov]! > NPE in AbstractWebSocketProcessor after session times out > --------------------------------------------------------- > > Key: WICKET-6758 > URL: https://issues.apache.org/jira/browse/WICKET-6758 > Project: Wicket > Issue Type: Bug > Components: wicket-native-websocket > Affects Versions: 8.7.0 > Reporter: Thomas Heigl > Assignee: Martin Tzvetanov Grigorov > Priority: Major > Fix For: 9.0.0-M5, 8.8.0, 7.17.0 > > > Hi all, > I'm seeing NPEs when processing websocket messages after the session has > timed out: > {code:java} > java.lang.NullPointerException: null > at > org.apache.wicket.protocol.ws.api.AbstractWebSocketProcessor.broadcastMessage(AbstractWebSocketProcessor.java:245) > at > org.apache.wicket.protocol.ws.api.AbstractWebSocketProcessor.onConnect(AbstractWebSocketProcessor.java:181) > at > org.apache.wicket.protocol.ws.javax.JavaxWebSocketProcessor.<init>(JavaxWebSocketProcessor.java:18) > at > org.apache.wicket.protocol.ws.javax.WicketEndpoint.onOpen(WicketEndpoint.java:41) > at > org.apache.tomcat.websocket.server.WsHttpUpgradeHandler.init(WsHttpUpgradeHandler.java:133) > at > org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:914) > at > org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1639) > at > org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) > at > java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) > at > java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) > at > org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) > at java.base/java.lang.Thread.run(Thread.java:834) {code} > Wicket tries to get the PageManager from the session, but the session is > null. This case should probably be logged like the case when the page has > expired. -- This message was sent by Atlassian Jira (v8.3.4#803005)