C # 'de Soket Programlama

using System; 
using System.Net; 
using System.Net.Sockets; 
using System.Text; 
 
// Socket Listener acts as a server and listens to the incoming   
// messages on the specified port and protocol. 
public class SocketListener 
{ 
    public static int Main(String[] args) 
    { 
        StartServer(); 
        return 0; 
    } 
 
    
    public static void StartServer() 
    { 
        // Get Host IP Address that is used to establish a connection 
        // In this case, we get one IP address of localhost that is IP : 127.0.0.1 
        // If a host has multiple addresses, you will get a list of addresses 
        IPHostEntry host = Dns.GetHostEntry("localhost"); 
        IPAddress ipAddress = host.AddressList[0]; 
        IPEndPoint localEndPoint = new IPEndPoint(ipAddress, 11000);   
        
 
        try {   
 
            // Create a Socket that will use Tcp protocol     
            Socket listener = new Socket(ipAddress.AddressFamily, SocketType.Stream, ProtocolType.Tcp); 
            // A Socket must be associated with an endpoint using the Bind method 
            listener.Bind(localEndPoint); 
            // Specify how many requests a Socket can listen before it gives Server busy response. 
            // We will listen 10 requests at a time 
            listener.Listen(10); 
 
            Console.WriteLine("Waiting for a connection..."); 
            Socket handler = listener.Accept(); 
 
             // Incoming data from the client.   
             string data = null; 
             byte[] bytes = null; 
 
            while (true) 
            { 
                bytes = new byte[1024]; 
                int bytesRec = handler.Receive(bytes); 
                data += Encoding.ASCII.GetString(bytes, 0, bytesRec); 
                if (data.IndexOf("<EOF>") > -1) 
                { 
                    break; 
                } 
            } 
 
            Console.WriteLine("Text received : {0}", data); 
 
            byte[] msg = Encoding.ASCII.GetBytes(data); 
            handler.Send(msg); 
            handler.Shutdown(SocketShutdown.Both); 
            handler.Close(); 
        } 
        catch (Exception e) 
        { 
            Console.WriteLine(e.ToString()); 
        } 
 
        Console.WriteLine("\n Press any key to continue..."); 
        Console.ReadKey(); 
    }         
}

using System; 
using System.Net; 
using System.Net.Sockets; 
using System.Text; 
 
// Client app is the one sending messages to a Server/listener.   
// Both listener and client can send messages back and forth once a   
// communication is established. 
public class SocketClient 
{ 
    public static int Main(String[] args) 
    { 
        StartClient(); 
        return 0; 
    } 
 
 
    public static void StartClient() 
    { 
        byte[] bytes = new byte[1024]; 
 
        try 
        { 
            // Connect to a Remote server 
            // Get Host IP Address that is used to establish a connection 
            // In this case, we get one IP address of localhost that is IP : 127.0.0.1 
            // If a host has multiple addresses, you will get a list of addresses 
            IPHostEntry host = Dns.GetHostEntry("localhost"); 
            IPAddress ipAddress = host.AddressList[0]; 
            IPEndPoint remoteEP = new IPEndPoint(ipAddress, 11000); 
 
            // Create a TCP/IP  socket.   
            Socket sender = new Socket(ipAddress.AddressFamily, 
                SocketType.Stream, ProtocolType.Tcp); 
 
            // Connect the socket to the remote endpoint. Catch any errors.   
            try 
            { 
                // Connect to Remote EndPoint 
                sender.Connect(remoteEP); 
 
                Console.WriteLine("Socket connected to {0}", 
                    sender.RemoteEndPoint.ToString()); 
 
                // Encode the data string into a byte array.   
                byte[] msg = Encoding.ASCII.GetBytes("This is a test<EOF>"); 
 
                // Send the data through the socket.   
                int bytesSent = sender.Send(msg); 
 
                // Receive the response from the remote device.   
                int bytesRec = sender.Receive(bytes); 
                Console.WriteLine("Echoed test = {0}", 
                    Encoding.ASCII.GetString(bytes, 0, bytesRec)); 
 
                // Release the socket.   
                sender.Shutdown(SocketShutdown.Both); 
                sender.Close(); 
 
            } 
            catch (ArgumentNullException ane) 
            { 
                Console.WriteLine("ArgumentNullException : {0}", ane.ToString()); 
            } 
            catch (SocketException se) 
            { 
                Console.WriteLine("SocketException : {0}", se.ToString()); 
            } 
            catch (Exception e) 
            { 
                Console.WriteLine("Unexpected exception : {0}", e.ToString()); 
            } 
 
        } 
        catch (Exception e) 
        { 
            Console.WriteLine(e.ToString()); 
        } 
    } 
}