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Listen for Socket Request in Thread

using System; using System.Text; using System.Threading; using System.Net; using System.Net.Sockets; public class MainClass {     static void ListenForRequests() {         int CONNECT_QUEUE_LENGTH = 4;                  Socket listenSock = new Socket( AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp );         listenSock.Bind( new IPEndPoint(IPAddress.Any,9999) );         listenSock.Listen( CONNECT_QUEUE_LENGTH );         while( true ) {             using( Socket newConnection = listenSock.Accept() ) {                 // Send the data.                 byte[] msg = Encoding.UTF8.GetBytes( "Hello World!" );                 newConnection.Send( msg, SocketFlags.None );             }         }     }     static void Main() {         // Start the listening thread.         Thread listener = new Thread(new ThreadStart(ListenForRequests) );         listener.IsBackground = true;         listener.Start();         Console.WriteLine( "Press <enter> to quit" );         Console.ReadLine();     } }