using System;
using System.Net.Sockets;
using System.Net ;
using System.Threading ;

public class DateServer 
{
    private TcpListener myListener ;
    private int port = 4554 ;
    
    public DateServer()
    {
        try
        {
            //start listing on the given port
            myListener = new TcpListener(port) ;
            myListener.Start();
            Console.WriteLine("Server Ready - Listining for new Connections ...") ;
            //start the thread which calls the methor SatrtListen
            Thread th = new Thread(new ThreadStart(StartListen));
            th.Start() ;                
        }
        catch(Exception e)
        {
            Console.WriteLine("An Exception Occured while Listing :"+e.ToString());
        }
        
    }

    public static void Main(String[] argv)
    {
        DateServer dts = new DateServer();
    }
    
    public void StartListen()
    {
        while(true)
        {
            //Accept a new connection
            Socket mySocket = myListener.AcceptSocket() ;
            if(mySocket.Connected)
            {
                Console.WriteLine("Client Connected!!") ;
                //make a byte array and receive data from the client 
                Byte[] receive = new Byte[64] ;
                int i=mySocket.Receive(receive,receive.Length,0) ;
                char[] unwanted = {' ',' ',' '};
                string rece = System.Text.Encoding.ASCII.GetString(receive);
                Console.WriteLine(rece.TrimEnd(unwanted)) ;
                
                //get the current date/time and convert it to string
                DateTime now = DateTime.Now;
                String strDateLine ="Server: The Date/Time Now is: "+ now.ToShortDateString() + " " + now.ToShortTimeString();
            
                // Convert to byte array and send
                Byte[] byteDateLine = System.Text.Encoding.ASCII.GetBytes(strDateLine.ToCharArray());
                mySocket.Send(byteDateLine,byteDateLine.Length,0);                
            }
        }
    }
}