Tcp server : Socket Server : Network C# Examples

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

class  MainClass
{
      public  static  void  Main()
      {
            string  data;
            IPEndPoint  ip  =  new  IPEndPoint(IPAddress.Any,  9999);

            Socket  socket  =  new  Socket(AddressFamily.InterNetwork,SocketType.Stream,  ProtocolType.Tcp);

            socket.Bind(ip);
            socket.Listen(10);

            Socket  client  =  socket.Accept();
            IPEndPoint  newclient  =  (IPEndPoint)client.RemoteEndPoint;
            Console.WriteLine("Connected  with  {0}  at  port  {1}",newclient.Address,  newclient.Port);

            NetworkStream  ns  =  new  NetworkStream(client);
            StreamReader  sr  =  new  StreamReader(ns);
            StreamWriter  sw  =  new  StreamWriter(ns);

            string  welcome  =  "Welcome";
            sw.WriteLine(welcome);
            sw.Flush();

            while(true)
            {
                  data  =  sr.ReadLine();
                  Console.WriteLine(data);
                  sw.WriteLine(data);
                  sw.Flush();
            }
            Console.WriteLine("Disconnected  from  {0}",  newclient.Address);
            sw.Close();
            sr.Close();
            ns.Close();  
      }
}