Hi everyone, I am quite new to Akka and Websockets. I tried to create a simple Websocket server using Akka HTTP following mostly this example [1]. Everytime I send a message to my own server I get the following exception:
[ERROR] [09/18/2016 15:37:01.533] [default-akka.actor.default-dispatcher-4] [akka.actor.ActorSystemImpl(default)] WebSocket handler failed with java.lang.String cannot be cast to akka.http.javadsl.model.ws.Message java.lang.ClassCastException: java.lang.String cannot be cast to akka.http.javadsl.model.ws.Message at akka.stream.impl.fusing.Map$$anon$8.onPush(Ops.scala:42) at akka.stream.impl.fusing.GraphInterpreter.processPush(GraphInterpreter.scala:747) at akka.stream.impl.fusing.GraphInterpreter.processEvent(GraphInterpreter.scala:710) at akka.stream.impl.fusing.GraphInterpreter.execute(GraphInterpreter.scala:616) at akka.stream.impl.fusing.GraphInterpreterShell.runBatch(ActorGraphInterpreter.scala:471) at akka.stream.impl.fusing.GraphInterpreterShell.receive(ActorGraphInterpreter.scala:410) at akka.stream.impl.fusing.ActorGraphInterpreter.akka$stream$impl$fusing$ActorGraphInterpreter$$processEvent(ActorGraphInterpreter.scala:603) at akka.stream.impl.fusing.ActorGraphInterpreter$$anonfun$receive$1.applyOrElse(ActorGraphInterpreter.scala:618) at akka.actor.Actor.aroundReceive(Actor.scala:484) at akka.actor.ActorCell.receiveMessage(ActorCell.scala:526) at akka.actor.ActorCell.invoke(ActorCell.scala:495) at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:257) at akka.dispatch.Mailbox.run(Mailbox.scala:224) at akka.dispatch.Mailbox.exec(Mailbox.scala:234) at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289) at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056) at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692) at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157) Currently, I have no idea why it crashes like this because the method handleWebSocketMessages() expects a Flow<Message, Message, T> so there is no chance I could use a String. Did I miss some configuration for implicit conversion? You can see the server here [2] and the client here [3]. I am using Akka HTTP Core and Experimental 2.12.0-RC1 version 2.4.10. Thank you for your help. Cheers, Ronny [1] http://markatta.com/codemonkey/blog/2016/04/18/chat-with-akka-http-websockets/ [2] https://gist.github.com/rbraeunlich/e2582075e2ccc0fd63580bdd95585aa5 [3] https://gist.github.com/rbraeunlich/eded91382d72a3d90e8182ca1b077d01 -- >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>> Check the FAQ: >>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user --- You received this message because you are subscribed to the Google Groups "Akka User List" group. To unsubscribe from this group and stop receiving emails from it, send an email to akka-user+unsubscr...@googlegroups.com. To post to this group, send email to akka-user@googlegroups.com. Visit this group at https://groups.google.com/group/akka-user. For more options, visit https://groups.google.com/d/optout.