java - Jetty: socket connection as websocket connection -

i'm pretty new websocket programming (or better: web programming @ all). while ago made using sockets , serversockets exchange data between client , server , started build similiar functionality using websockets , jetty can't figure out until now.

so i'm aiming @ moment is: client got string message, sends server using websocket , server pasting out message (to console or file). general context: got 2 applications running on different machines , want use websockets exchange data between them.

so that's client's code :

public class socketclient {     public static void main(string[] args) throws urisyntaxexception {         try {             new socketclient().run(new uri("ws://localhost:8080/"));             //new socketclient().run(new uri("wss://localhost:8443/"));         } catch (exception e) {             e.printstacktrace();         }      }     public void run(uri desturi) throws exception {         websocketclient client = new websocketclient();         try {             client.start();             clientupgraderequest request = new clientupgraderequest();              examplesocket socket = new examplesocket();             future<session> future = client.connect(socket,desturi,request);              future.get();              socket.getremote().sendstring("hello server");          }                 {             client.stop();         }     } }   class examplesocket extends websocketadapter {     @override     public void onwebsockettext(string message)     {         try         {             getremote().sendstring(message);         }         catch (ioexception e)         {             e.printstacktrace();         }     }  } 

and that's server code:

public class socketserver extends abstracthandler {     public void handle(string target, request baserequest,httpservletrequest request, httpservletresponse response) {         try {             response.setcontenttype("text/html");             response.setstatus(httpservletresponse.sc_ok);             baserequest.sethandled(true);              response.getwriter().println(request);         }         catch (ioexception ioe) {             system.out.println(ioe);         }     }     public static void main(string[] args) throws exception {         server server = new server(8080);         server.sethandler(new socketserver());          server.start();         server.join();     } } 

i got both jetty documentations can't figure out until now. when try running them error on client:

java.util.concurrent.executionexception: org.eclipse.jetty.websocket.api.upgradeexception: didn't switch protocols     @ org.eclipse.jetty.util.futurepromise.get(futurepromise.java:123)     @ socketclient.run(socketclient.java:37)     @ socketclient.main(socketclient.java:19) caused by: org.eclipse.jetty.websocket.api.upgradeexception: didn't switch protocols     @ org.eclipse.jetty.websocket.client.io.upgradeconnection.validateresponse(upgradeconnection.java:278)     @ org.eclipse.jetty.websocket.client.io.upgradeconnection.read(upgradeconnection.java:205)     @ org.eclipse.jetty.websocket.client.io.upgradeconnection.onfillable(upgradeconnection.java:150)     @ org.eclipse.jetty.io.abstractconnection$2.run(abstractconnection.java:540)     @ org.eclipse.jetty.util.thread.queuedthreadpool.runjob(queuedthreadpool.java:635)     @ org.eclipse.jetty.util.thread.queuedthreadpool$3.run(queuedthreadpool.java:555)     @ java.lang.thread.run(unknown source) 

so lot in advance, appreciated.

websocket client needs websocket server. did in server add handler deal http request-response exchanges only. need allow jetty deal websocket resources registering servlet of org.eclipse.jetty.websocket.servlet.websocketservlet or endpoint of javax.websocket.endpoint.

here's working examples written jetty team. if not fan of jsr, take @ native-jetty-websocket-example.

anyway, jetty team give definite answer if answer incomplete watching jetty tag.