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TcpListener Sample

using System; using System.Net; using System.Net.Sockets; using System.Text; class MainClass {    public static void Main()    {       int receivedDataLength;       byte[] data = new byte[1024];       TcpListener socket = new TcpListener(9999);       socket.Start();       TcpClient client = socket.AcceptTcpClient();       NetworkStream ns = client.GetStream();       string welcome = "Welcome";       data = Encoding.ASCII.GetBytes(welcome);       ns.Write(data, 0, data.Length);       while(true)       {          data = new byte[1024];          receivedDataLength = ns.Read(data, 0, data.Length);          Console.WriteLine(Encoding.ASCII.GetString(data, 0, receivedDataLength));          ns.Write(data, 0, receivedDataLength);       }       ns.Close();       client.Close();       socket.Stop();    } }