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

public class EchoClient {
  public static void main(String[] args) throws Exception {
    String hostname = "localhost";
    DatagramSocket socket;
    byte[] sendBytes, receiveBytes = new byte[1000];
    BufferedReader userIn = 
        new BufferedReader(new InputStreamReader(System.in));

    try { 
         socket = new DatagramSocket(); 
        } 
    catch (IOException e) 
        { 
         System.err.println("Could not create socket on port: 10007."); 
         System.exit(1); 
	 return;
        } 
    DatagramPacket myPacket = new DatagramPacket(new byte[1000], 1000);
    myPacket.setAddress(InetAddress.getByName(hostname));
    myPacket.setPort(10007);
    System.out.println ("Waiting for message.....");

    while (true) {
      String theLine = userIn.readLine();
      if (theLine.equals("."))
        break;
      sendBytes = theLine.getBytes();
      myPacket.setData(sendBytes);
      socket.send(myPacket);
      socket.receive(myPacket);
      String theResponse = new String(myPacket.getData()); 
      System.out.println(theResponse);
    }
  }
}