udpserver.cs

using System;
using System.Net;
using System.Net.Sockets;
using System.Text;

public class UDPListener
{
    private const int listenPort = 5000;

    private static void StartListener()
    {
        UdpClient listener = new UdpClient(listenPort);
        IPEndPoint groupEP = new IPEndPoint(IPAddress.Any,listenPort);

        try
        {
            while (true)
            {
                Console.WriteLine("Waiting for UDP");
                byte[] bytes = listener.Receive( ref groupEP);
                string str = Encoding.ASCII.GetString(bytes, 0, bytes.Length);
                string[] words = str.Split(',');
                Console.WriteLine("Received broadcast from {0} :\n {1}\n",
                                  groupEP.ToString(),
                                  str);
                float x = float.Parse(words[0]);
                float y = float.Parse(words[1]);
                float z = float.Parse(words[2]);
                bool s = bool.Parse(words[3]);
                if (s) {
                    Console.WriteLine("11111111111111111111111111111111");
                }
            }

        }
        catch (Exception e)
        {
            Console.WriteLine(e.ToString());
        }
        finally
        {
            listener.Close();
        }
    }

    public static int Main()
    {
        StartListener();

        return 0;
    }
}