/*
 * Fail Dserver.java
 * author Jaanus Poial
 */

import java.net.*;
import java.io.*;
import java.util.Date;

public class Dserver {

   public static void main (String [] parameetrid) {

      int pordinumber;                  // UDP-pordi number
      if (parameetrid.length == 0)
         pordinumber = 5678;
      else 
         pordinumber = Integer.parseInt (parameetrid [0]);
      try {
         DatagramSocket dpistik = new DatagramSocket (pordinumber);
         // analoog serverpistikuga -- istume ja kuulame
         System.out.println ("Kuulan UDP-porti " + pordinumber);
         InetAddress localaddr = InetAddress.getLocalHost();
         while (true) { // lopmatu tsu"kkel, ctrl-c abil va"lja
            byte [] andmed = new byte [1024];
            DatagramPacket pakett = new DatagramPacket
               (andmed, andmed.length);
            dpistik.receive (pakett);
            String teade = new String
               (pakett.getData(), 0, pakett.getLength());
            InetAddress aadress = pakett.getAddress();
            int teineport = pakett.getPort();
            int localPort = dpistik.getLocalPort();
            System.out.println ("\n" + localaddr.toString() + 
               " port " + String.valueOf (localPort) + 
               " kaudu saabus aadressilt\n" + aadress.toString() + 
               " port " + String.valueOf (teineport) +
               "  " + new Date().toString() + " teade:\n" + teade);
         }
      }
      catch (IOException e) {
         System.out.println (e);
      }
   } // main lopp

} // Dserver lopp