using System;
using System.Net;
using System.Net.Sockets;
using System.Text;

namespace Client
{
    public class SynchronousSocketClient
    {

        public static void StartClient()
        {
            // Data buffer for incoming data.
            byte[] bytes = new byte[1024];

            Console.WriteLine("Please, set the remote address");
            var address = Console.ReadLine();

            if (address == null) return;
            try
            {
                IPHostEntry ipHostInfo = Dns.Resolve(address);
                IPAddress ipAddress = ipHostInfo.AddressList[0];
                IPEndPoint remoteEP = new IPEndPoint(ipAddress, 11010);

                Socket sender = new Socket(AddressFamily.InterNetwork,
                                           SocketType.Stream, ProtocolType.Tcp);

                // Connect the socket to the remote endpoint. Catch any errors.
                try
                {
                    sender.Connect(remoteEP);

                    Console.WriteLine("Socket connected to {0}",
                                      sender.RemoteEndPoint.ToString());
                    Console.WriteLine("input your message");
                    var message = Console.ReadLine();
                    // Encode the data string into a byte array.
                    byte[] msg = Encoding.ASCII.GetBytes(message + "<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());
            }
        }

        public static int Main(String[] args)
        {
            StartClient();
            return 0;
        }
    }
}