testserveurudp.java

exemple for using java chat client + server

package UDP;

import java.io.*;
import java.net.*;

public class TestServeurUDP {

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

  public static void main(String argv[]) throws Exception {
    DatagramSocket socket = new DatagramSocket(port);
    String donnees = "";
    String message = "";
    int taille = 0;

    System.out.println("Lancement du serveur");
    while (true) {
      DatagramPacket paquet = new DatagramPacket(buffer, buffer.length);
      DatagramPacket envoi = null;
      socket.receive(paquet);

      System.out.println("\n"+paquet.getAddress());
      taille = paquet.getLength();
      donnees = new String(paquet.getData(),0, taille);
      System.out.println("Donnees re鐄es = "+donnees);

     message = "Bonjour "+donnees;
      System.out.println("Donnees envoyees = "+message);
      envoi = new DatagramPacket(message.getBytes(), 
      message.length(), paquet.getAddress(), paquet.getPort());
      socket.send(envoi);
      socket.close();
    }
  }
}