package org.llgc;

import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.nio.charset.Charset;

public class ServeurUDP
{
  private static final int PORT = 9632;

  public static void main (String[] args)
  {
    try (DatagramSocket socket = new DatagramSocket (PORT))
    {
      while (true)
      {
        byte[] buffer = new byte[1024];
        DatagramPacket paquet = new DatagramPacket (buffer, buffer.length);
        socket.receive (paquet);
        String data = new String (paquet.getData (), 0, paquet.getLength (), Charset.forName ("UTF-8"));
        System.out.println (paquet.getAddress () + " \"" + data + "\"");

        String messageRenvoye = "Bonjour"
            + new String (paquet.getData (), 0, paquet.getLength (), Charset.forName ("UTF-8"));
        DatagramPacket envoie = new DatagramPacket (messageRenvoye.getBytes (Charset.forName ("UTF-8")),
            messageRenvoye.getBytes (Charset.forName ("UTF-8")).length, paquet.getAddress (), paquet.getPort ());
        socket.send (envoie);
        if (data.compareTo ("GoodBye") == 0)
        {
          break;
        }
      }
    }
    catch (IOException e)
    {
      e.printStackTrace ();
      return;
    }
  }
}