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/* Test Multicast Sockets */

import java.net.*;

import java.io.*;

public class MulticastClient

{

public static void

main(String[] argv) throws IOException

{

  System.out.println("Starting multicast tests");

  System.out.println("NOTE: You need to do an 'ifconfig <interface> " +

                     "multicast' or this will fail on linux");

  byte[] buf = { 'H', 'e', 'l', 'l', 'o', ',', ' ', 'W', 'o','r','l','d' };

  /* Simple Send */

  System.out.println("Test 1: Multicast send/receive test");

  try

    {

      InetAddress addr = InetAddress.getByName("234.0.0.1");

      MulticastSocket s = new MulticastSocket();

      DatagramPacket p = new DatagramPacket(buf, buf.length, addr, 3333);

      s.joinGroup(addr);

      s.send(p);

      s.close();

    }

  catch(IOException e)

    {

      System.out.println("FAILED: simple multicast send: " + e);

    }

  /* Options */

  System.out.println("Test 2: Multicast socket options");

  try

    {

      InetAddress addr;

      MulticastSocket s = new MulticastSocket();

      System.out.println("TTL = " + s.getTTL());

      System.out.println("Setting TTT to 121");

      s.setTTL((byte)12);

      System.out.println("TTL = " + s.getTTL());

      InetAddress oaddr = s.getInterface();

      System.out.println("Multicast Interface = " + oaddr);

      System.out.println("Setting interface to localhost");

      addr = InetAddress.getByName("198.211.138.177");

      s.setInterface(addr);

      System.out.println("Multicast Interface = " + s.getInterface());

      System.out.println("Setting interface to " + oaddr);

      s.setInterface(oaddr);

      System.out.println("Multicast Interface = " + s.getInterface());

    }

  catch(IOException e)

    {

      System.out.println("FAILED: multicast options: " + e);

    }

}

}