//************ client for time uses multicast datagram ********

import java.net.MulticastSocket;
import java.net.DatagramPacket;
import java.net.InetAddress;
import java.util.Date;
import java.io.IOException;

public class TimeReceiverMC {
    public static void main(String[ ] args) {
        try {
            // Join multicast group.
            InetAddress t_group = InetAddress.getByName(addr);
            MulticastSocket mcs = new MulticastSocket(port);
            mcs.joinGroup(t_group);
        
            // Prepare a packet to receive data.
            byte[ ] t_bytes = new Date().toString().getBytes();
            DatagramPacket packet = 
               new DatagramPacket(t_bytes, t_bytes.length);
        
            // Receive 10 packets and then leave the group;
            for (int i = 0; i < 10; i++) {
                mcs.receive(packet);
                System.out.println("From group: " + 
                               new String(packet.getData()));
            }
            mcs.leaveGroup(t_group);
        }
        catch(IOException e) { System.err.println(e); }
     }
    private static final int port = 9977;
    private static final String addr = "228.1.2.3";
}