Thanks for looking Martin
On 3 November 2016 at 09:07, Martin Grigorov <mgrigo...@apache.org> wrote: > Hi, > > It is a bug in Wicket Native WebSocket. > https://github.com/apache/wicket/blob/d9d142b0738e289e639165523c4190 > 727e281519/wicket-native-websocket/wicket-native- > websocket-core/src/main/java/org/apache/wicket/protocol/ws/api/ > AbstractWebSocketProcessor.java#L310 > returns a null and still we try to push the message. > > Please file a ticket in JIRA! Thanks! > Jira created https://issues.apache.org/jira/browse/WICKET-6267 > > > What is the idea of your implementation? To notify the other users of the > app that some user have left? Like in a chat app? > Similar to a chat app. I need to track who is available online, so they can be notified when something that requires their approval becomes available. > > Martin Grigorov > Wicket Training and Consulting > https://twitter.com/mtgrigorov > > On Wed, Nov 2, 2016 at 5:01 PM, Peter Henderson < > peter.hender...@starjar.com > > wrote: > > > Hi all. > > > > wicket 7.3 > > tomcat 8.5.5 > > > > > > I'm starting to see many more exceptions in relation to web sockets. > > > > [1] > > > > I have a HttpSessionListener, which sends a message to an actor when a > > session is destroyed (aka user logout). The actor eventually broadcasts > a > > web socket message. > > > > Am I doing something wrong in my code [2]? > > > > > > > > > > [1] > > > > oawpwa.AbstractWebSocketProcessor An error occurred during processing > of a > > WebSocket message > > java.lang.IllegalArgumentException: Argument 'component' may not be > null. > > at org.apache.wicket.util.lang.Args.notNull(Args.java:41) > > at > > org.apache.wicket.protocol.ws.api.WebSocketRequestHandler.< > > init>(WebSocketRequestHandler.java:59) > > at > > org.apache.wicket.protocol.ws.WebSocketSettings. > > newWebSocketRequestHandler(WebSocketSettings.java:220) > > at > > org.apache.wicket.protocol.ws.api.AbstractWebSocketProcessor. > > broadcastMessage(AbstractWebSocketProcessor.java:245) > > at > > org.apache.wicket.protocol.ws.api.AbstractWebSocketConnection. > sendMessage( > > AbstractWebSocketConnection.java:43) > > at > > org.apache.wicket.protocol.ws.api.WebSocketPushBroadcaster$1.run( > > WebSocketPushBroadcaster.java:124) > > at > > org.apache.wicket.protocol.ws.WebSocketSettings$SameThreadExecutor.run( > > WebSocketSettings.java:246) > > at > > org.apache.wicket.protocol.ws.api.WebSocketPushBroadcaster.process( > > WebSocketPushBroadcaster.java:119) > > at > > org.apache.wicket.protocol.ws.api.WebSocketPushBroadcaster.broadcastAll( > > WebSocketPushBroadcaster.java:109) > > at > > com.starjar.engine.LoggedInUserTrackerActor.broadcastStats( > > LoggedInUserTrackerActor.scala:69) > > at > > com.starjar.engine.LoggedInUserTrackerActor$$ > > anonfun$receive$1.applyOrElse(LoggedInUserTrackerActor.scala:125) > > at akka.actor.Actor$class.aroundReceive(Actor.scala:467) > > at > > com.starjar.engine.LoggedInUserTrackerActor.aroundReceive( > > LoggedInUserTrackerActor.scala:31) > > at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516) > > at akka.actor.ActorCell.invoke(ActorCell.scala:487) > > at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:238) > > at akka.dispatch.Mailbox.run(Mailbox.scala:220) > > at > > akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec( > > AbstractDispatcher.scala:397) > > at > > scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) > > at > > scala.concurrent.forkjoin.ForkJoinPool$WorkQueue. > > runTask(ForkJoinPool.java:1339) > > at > > scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) > > at > > scala.concurrent.forkjoin.ForkJoinWorkerThread.run( > > ForkJoinWorkerThread.java:107) > > > > > > > > > > > > [2] The broadcasting code running in my actor. > > > > private def buildLoggedInUserMessage(): CurrentlyLoggedInUsers = { > > val response = ... /* snip snip snip */ > > response > > } > > > > def broadcastStats(): Unit = { > > val application = WicketStarjarApplication.get() > > val webSocketSettings = WebSocketSettings.Holder.get(application) > > val broadcaster = new > > WebSocketPushBroadcaster(webSocketSettings.getConnectionRegistry()) > > broadcaster.broadcastAll(application, buildLoggedInUserMessage) > > } > > > > > > > > > > > > > > Thanks > > > > Peter. > > > > > > > > > > > > > > > > > > > > > > > > > > -- > > Peter Henderson > > > -- Peter Henderson Director Starjar Ltd. www.starjar.com 0330 088 1662
