Simple Udp Server


C# Network Programming 
by Richard Blum

Publisher: Sybex 
ISBN: 0782141765
using System;
using System.Net;
using System.Net.Sockets;
using System.Text;

public class SimpleUdpSrvr
   public static void Main()
      int recv;
      byte[] data = new byte[1024];
      IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 9050);

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

      Console.WriteLine("Waiting for a client...");

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

      recv = newsock.ReceiveFrom(data, ref Remote);

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

      string welcome = "Welcome to my test server";
      data = Encoding.ASCII.GetBytes(welcome);
      newsock.SendTo(data, data.Length, SocketFlags.None, Remote);
         data = new byte[1024];
         recv = newsock.ReceiveFrom(data, ref Remote);
         Console.WriteLine(Encoding.ASCII.GetString(data, 0, recv));
         newsock.SendTo(data, recv, SocketFlags.None, Remote);


This entry was posted in C# Network. Bookmark the permalink.