Re: [jetty-users] Jetty9 WebSocket Client - SessionFactory.createSession

[Joakim Erdfelt <joakim@xxxxxxxxxxx>]

see a simple example at

http://git.eclipse.org/c/jetty/org.eclipse.jetty.project.git/tree/jetty-websocket/websocket-client/src/test/java/examples?id=jetty-9.1.1.v20140108

There's no need to be mucking about with WebSocketSessionFactory, EventDriver, or LogicalConnection.

Just keep it simple, use the socket you pass in as your communications channel.

The Socket is configured by you to receive messages, and you use the session (obtained during socket open) to get information about the connection.

Use the session.getRemote() to send messages.

--

Joakim Erdfelt <joakim@xxxxxxxxxxx>

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On Wed, Jan 15, 2014 at 12:54 PM, Ken OKABE <kenokabe@xxxxxxxxx> wrote:

Hi, I'm new to Jerry, and trying to implement WebSocket Client on Jetty9.

I saw an example on Jetty8.

org.eclipse.jetty.websocket Class WebSocketClient

http://archive.eclipse.org/jetty/8.0.0.v20110901/apidocs/org/eclipse/jetty/websocket/WebSocketClient.html

to create a new instance of WebSocketClient is :
//=====================================================
   WebSocketClientFactory factory = new WebSocketClientFactory();
   factory.start();

   WebSocketClient client = factory.newWebSocketClient();
   // Configure the client

   WebSocket.Connection connection = client.open(new
URI("ws://127.0.0.1:8080/"), new WebSocket.OnTextMessage()
   {
     public void onOpen(Connection connection)
     {
       // open notification
     }

     public void onClose(int closeCode, String message)
     {
       // close notification
     }

     public void onMessage(String data)
     {
       // handle incoming message
     }
   }).get(5, TimeUnit.SECONDS);

   connection.sendMessage("Hello World");
//===========================================================

However, I've never seen a document for Jetty9 for this.

So far, referring to
http://download.eclipse.org/jetty/9.1.0.v20131115/apidocs/org/eclipse/jetty/websocket/common/SessionFactory.html#createSession%28java.net.URI,%20org.eclipse.jetty.websocket.common.events.EventDriver,%20org.eclipse.jetty.websocket.common.LogicalConnection%29

//----------------------------------------------
WebSocketSession createSession(URI requestURI,
                             EventDriver websocket,
                             LogicalConnection connection)
//----------------------------------------------

 I've tried

//===========================================================
         try
            {
                WebSocketSession session = factory.createSession(uri,
eventDriver, connection);
                RemoteEndpoint ep = session.getRemote();
            }
         catch (Exception ex)
            {
                System.out.println("=ERROR= " + ex);
                //=ERROR= java.lang.NullPointerException
            }

        private EventDriver eventDriver = new EventDriver()
        {
            @Override
            public WebSocketPolicy getPolicy()
            {
                return null;
            }

            //......................................

            @Override
            public void incomingFrame(Frame frame)
            {

            }
        };

        private LogicalConnection connection = new LogicalConnection()
        {
            @Override
            public void close()
            {

            }

            //...............................


            @Override
            public void resume()
            {

            }
        };
//===========================================================

but I've encounter  java.lang.NullPointerException

How do we implement Jetty9 WebSocket Client ??

Thanks for your advise.

Ken
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