testclientudp.java

exemple for using java chat client + server

/*
 * TestClientUDP.java
 *
 * Created on 13 novembre 2008, 20:30
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package UDP;

/**
 *
 * @author Mustapha
 */
import java.io.*;
import java.net.*;

public class TestClientUDP {

  final static int port = 9631;
  final static int taille = 1024;
  static byte buffer[] = new byte[taille];

  public static void main(String argv[]) throws Exception {
    try {
      InetAddress serveur = InetAddress.getByName("localhost");
      String hello="ahmed";
      int length = hello.length();
      byte buffer[] = hello.getBytes();
      DatagramSocket socket = new DatagramSocket();
      DatagramPacket donneesEmises = new DatagramPacket(buffer, length, serveur, port);
      DatagramPacket donneesRecues = new DatagramPacket(new byte[taille], taille);

      socket.setSoTimeout(30000);
      socket.send(donneesEmises);
      socket.receive(donneesRecues);

      System.out.println("Message : " + new String(donneesRecues.getData(), 
        0, donneesRecues.getLength()));
      System.out.println("de : " + donneesRecues.getAddress() + ":" + 
        donneesRecues.getPort());
      socket.close();
    } catch (SocketTimeoutException ste) {
      System.out.println("Le delai pour la reponse a expire");
    } catch (Exception e) {
      e.printStackTrace();
    }
  }
}