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Stream Tcp Server

/* C# Network Programming  by Richard Blum Publisher: Sybex  ISBN: 0782141765 */ using System; using System.IO; using System.Net; using System.Net.Sockets; using System.Text; public class StreamTcpSrvr {    public static void Main()    {       string data;       IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 9050);       Socket newsock = new Socket(AddressFamily.InterNetwork,                       SocketType.Stream, ProtocolType.Tcp);       newsock.Bind(ipep);       newsock.Listen(10);       Console.WriteLine("Waiting for a client...");       Socket client = newsock.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 to my test server";       sw.WriteLine(welcome);       sw.Flush();       while(true)       {          try          {             data = sr.ReadLine();          } catch (IOException)          {             break;          }                  Console.WriteLine(data);          sw.WriteLine(data);          sw.Flush();       }       Console.WriteLine("Disconnected from {0}", newclient.Address);       sw.Close();       sr.Close();       ns.Close();    } }