//package PA2;

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

/**
@author V. Arun
 */

public class UDPClient {
	private static final int MAX_MSG_SIZE = 2048;
	private static final String SERVER = "plum.cs.umass.edu";
	private static final int PORT = 8888;
	private static DatagramSocket udpsock=null;

	// Receives datagram and write to standard output
	public static class UDPReader extends Thread {
		public void run() {
			while(true) {
				byte[] msg = new byte[MAX_MSG_SIZE];
				DatagramPacket recvDgram = new DatagramPacket(msg, msg.length);
				try {
					udpsock.receive(recvDgram);
					System.out.write(recvDgram.getData(), 0, recvDgram.getLength());
				} catch(IOException e) {
					System.out.println(e); 
					continue;
				}
			}
		}
	}
	
	// Reads from standard input and sends datagram
	public static void main(String[] args) throws SocketException, UnknownHostException, IOException {
		udpsock = new DatagramSocket();
		BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
		(new UDPReader()).start();
		String input=null;
		while((input=stdin.readLine())!=null) {
			DatagramPacket sendDgram = new DatagramPacket((input+"\n").getBytes(), 
					Math.min(input.length()+1,MAX_MSG_SIZE), 
					InetAddress.getByName((args.length>0?args[0]:SERVER)), (args.length>1?Integer.valueOf(args[1]):PORT));
			udpsock.send(sendDgram);
		}
	}
}