Java tutorial
package geniuswebsocket; /* * socket.io-java-client Test.java * * Copyright (c) 2012, Enno Boland * socket.io-java-client is a implementation of the socket.io protocol in Java. * * See LICENSE file for more information */ import java.util.Date; import io.socket.IOAcknowledge; import io.socket.IOCallback; import io.socket.SocketIO; import io.socket.SocketIOException; import org.json.JSONException; import org.json.JSONObject; /** * A simple echo client for testing. * * Based on Gottox's socket.io client. * * @author Erel Segal Halevi * @since 2013-02 */ public class EchoGottox implements IOCallback { private SocketIO socket; /** * @param args */ public static void main(String[] args) { try { new EchoGottox(); } catch (Exception e) { e.printStackTrace(); } } public EchoGottox() throws Exception { socket = new SocketIO(); socket.connect("http://localhost:4000/", this); //socket.connect("http://negochat.azurewebsites.net:80/", this); socket.emit("start_session", new JSONObject().put("userid", "Java " + new Date().toString()) .put("gametype", "menus_humanvshuman").put("role", "Candidate")); socket.send("Hello! I will echo everything you say."); } @Override public void onMessage(JSONObject json, IOAcknowledge ack) { try { System.out.println("Server said:" + json.toString(2)); socket.send("You just said '" + json.toString(2) + "'"); } catch (JSONException e) { e.printStackTrace(); } } @Override public void onMessage(String data, IOAcknowledge ack) { System.out.println("Server said: " + data); socket.send("You just said '" + data + "'"); } @Override public void onError(SocketIOException socketIOException) { System.out.println("an Error occured"); socketIOException.printStackTrace(); } @Override public void onDisconnect() { System.out.println("Connection terminated."); } @Override public void onConnect() { System.out.println("Connection established"); } @Override public void on(String event, IOAcknowledge ack, Object... args) { System.out.println("Server triggered event '" + event + "'"); if (event.equals("message")) { JSONObject arg0 = (JSONObject) args[0]; try { if (arg0.get("id").equals("Employer")) socket.send("You just said '" + arg0.get("msg") + "'"); } catch (JSONException e) { e.printStackTrace(); } } } }