import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.sql.SQLSyntaxErrorException;

public class Server {
    public static void main(String[] args) {
        try {
            DatagramSocket datagramSocket = new DatagramSocket(4567);
            byte[] recieved_message = new byte[60000];
            DatagramPacket datagramPacket = null;
            while(true) {
                datagramPacket = new DatagramPacket(recieved_message, recieved_message.length);
                datagramSocket.receive(datagramPacket);
                String s = from_bytes_to_string(recieved_message).toString();

                System.out.println(s);
                if(s.charAt(0) == 'E' && s.charAt(1) == 'N' && s.charAt(2) == 'D') {
                    return;
                }
                recieved_message = new byte[60000];
            }
        }
        catch (Exception e) {
            e.printStackTrace();
        }

    }
    public static StringBuilder from_bytes_to_string(byte[] b) {
        StringBuilder s = new StringBuilder();
        for(int i = 0; i < b.length; i++) {
           s.append((char)b[i]);
        }
        return s;
    }
}