C#

static void Main(string[] args)
    {
      if (args.Length > 0)
        ServerMode();
      else 
        ClientMode(); 
    }

    private static void ServerMode()
    {
      Socket listen = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
      IPEndPoint iep = new IPEndPoint(IPAddress.Any, 8888);
      listen.Bind(iep);
      listen.Listen(3);
      Socket sock = listen.Accept();
      byte[] data = File.ReadAllBytes("C:\\bmptemp.bmp");
      NetworkStream ns = new NetworkStream(sock);
      ns.Write(data, 0, data.Length);

      while (true)
      {
        int i = 2 + 2;
      }
    }
 
    private static void ClientMode()
    {
      int recv = 0;
      int totalRecv = 0;
      Socket connect = new Socket(AddressFamily.InterNetwork,        SocketType.Stream, ProtocolType.Tcp);
      connect.Connect(IPAddress.Parse("192.168.1.13"), 8888);
      NetworkStream ns = new NetworkStream(connect);
      do
      { 
        byte[] data = new byte[1024];
        recv = ns.Read(data, 0, data.Length);
        totalRecv += recv;
        foreach (byte b in data)
          Console.Write(b.ToString() + " ");
      }
      while (recv > 0);
      Console.WriteLine("Bytes read: {0}", totalRecv.ToString());
      Console.ReadKey();   
    }