//-----------------------------------------------------------------------
//  This file is part of the Microsoft .NET Framework SDK Code Samples.
// 
//  Copyright (C) Microsoft Corporation.  All rights reserved.
// 
//This source code is intended only as a supplement to Microsoft
//Development Tools and/or on-line documentation.  See these other
//materials for detailed information regarding Microsoft code samples.
// 
//THIS CODE AND INFORMATION ARE PROVIDED AS IS WITHOUT WARRANTY OF ANY
//KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
//IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
//PARTICULAR PURPOSE.
//-----------------------------------------------------------------------

using System;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using System.Globalization;
namespace Microsoft.Samples.QuickStart.HowTo.Net.TcpUdp
{
    class Server 
    {
        public static void Main() 
        {
            DateTime now;
            String strDateLine;
            Encoding ASCII = Encoding.ASCII;
			Socket s = null;

			try
			{
				TcpListener tcpl = new TcpListener(IPAddress.Any, 13); // listen on port 13

				tcpl.Start();

				Console.WriteLine("Waiting for clients to connect");
				Console.WriteLine("Press Ctrl+c to Quit...");

				while (true)
				{
					// Accept will block until someone connects
					s = tcpl.AcceptSocket();
					// Get the current date and time then concatenate it
					// into a string
					now = DateTime.Now;
					strDateLine = now.ToShortDateString() + " " + now.ToLongTimeString();
					// Convert the string to a Byte Array and send it
					Byte[] byteDateLine = ASCII.GetBytes(strDateLine.ToCharArray());
					s.Send(byteDateLine, byteDateLine.Length, 0);					
					Console.WriteLine("Sent {0}", strDateLine);
				}
			}
			catch (SocketException socketError)
			{
				if (socketError.ErrorCode == 10048)
				{
					Console.WriteLine("Connection to this port failed.  There is another server is listening on this port.");
				}
			}
			finally
			{
				if (s != null)
					s.Close();
			}
		}
    }
}