Java tutorial
package basic; /* * 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 io.socket.IOAcknowledge; import io.socket.IOCallback; import io.socket.SocketIO; import io.socket.SocketIOException; import org.json.JSONException; import org.json.JSONObject; public class BasicExample implements IOCallback { private SocketIO socket; /** * @param args */ public static void main(String[] args) { try { new BasicExample(); } catch (Exception e) { e.printStackTrace(); } } public BasicExample() throws Exception { socket = new SocketIO(); socket.connect("http://127.0.0.1:3001/", this); // Sends a string to the server. socket.send("Hello Server"); // Sends a JSON object to the server. socket.send(new JSONObject().put("key", "value").put("key2", "another value")); // Emits an event to the server. socket.emit("event", "argument1", "argument2", 13.37); } @Override public void onMessage(JSONObject json, IOAcknowledge ack) { try { System.out.println("Server said:" + json.toString(2)); } catch (JSONException e) { e.printStackTrace(); } } @Override public void onMessage(String data, IOAcknowledge ack) { System.out.println("Server 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 + "'"); } }