Udp client setup : Socket Udp Client : Network C# Examples

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

class  MainClass
{
      public  static  void  Main()
      {
            byte[]  data  =  new  byte[1024];
            IPEndPoint  ip  =  new  IPEndPoint(IPAddress.Parse("127.0.0.1"),  9999);

            Socket  server  =  new  Socket(AddressFamily.InterNetwork,SocketType.Dgram,  ProtocolType.Udp);

            string  welcome  =  "Hello";
            data  =  Encoding.ASCII.GetBytes(welcome);
            server.SendTo(data,  data.Length,  SocketFlags.None,  ip);

            IPEndPoint  sender  =  new  IPEndPoint(IPAddress.Any,  0);
            EndPoint  tmpRemote  =  (EndPoint)sender;

            data  =  new  byte[1024];
            int  receivedDataLength  =  server.ReceiveFrom(data,  ref  tmpRemote);

            Console.WriteLine("Message  received  from  {0}:",  tmpRemote.ToString());
            Console.WriteLine(Encoding.ASCII.GetString(data,  0,  receivedDataLength));


            server.SendTo(Encoding.ASCII.GetBytes("message  1"),  tmpRemote);
            server.SendTo(Encoding.ASCII.GetBytes("message  2"),  tmpRemote);
            server.SendTo(Encoding.ASCII.GetBytes("message  3"),  tmpRemote);
            server.SendTo(Encoding.ASCII.GetBytes("message  4"),  tmpRemote);
            server.SendTo(Encoding.ASCII.GetBytes("message  5"),  tmpRemote);

            server.Close();
      }
}