TCPDate Server / Client

namespace SaurabhNet {
 using System;
 using System.Net.Sockets;
 using System.Net ;
 using System.Threading ;
 //Import the necessary Namespaces

 //Class which shows the implementation of the TCP Date server

 public class DateServer
 {
   private TCPListener myListener ;
   private int port = 4554 ;
   //The constructor which make the TCPListener start listening on the
   //given port.
   //It also calls a Thread on the method StartListen(). 
   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 method 'StartListen'
 Thread th = new Thread(new ThreadStart(StartListen));
  th.Start() ;
 }
  catch(Exception e)
   {
 Console.WriteLine("An Exception Occured while Listing :"+e.ToString());
    }
    }

//main entry point of the class
 public static void Main(String[] argv)
 {
  DateServer dts = new DateServer();
 }
//This method Accepts new connection and
    //First it receives the welcome massage from the client,
    //Then it sends the Current time to the Client.
    public void StartListen()
 {
 while(true)
  {
//Accept a new connection
 Socket mySocket = myListener.Accept() ;
 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=
Text.Encoding.ASCII.GetBytes(strDateLine.ToCharArray());
 mySocket.Send(byteDateLine,byteDateLine.Length,0);
				}
      }
    }
  }
} 

namespace SaurabhNet {
  using System ;
  using System.Net.Sockets ;
  using System.Net ;
  using System.Threading ;

  //Class which shows the implementation of the TCP Date Client
  public class DateClient
  {
    //the needed member fields
    private TCPClient tcpc;
    private string name ;
    private int port=4554 ;
    private bool readData=false ;

    //Constructor which contains all the code for the client.
    //It connects to the server and sends the clients name,
    //Then it waits and receives the date from the server
    public DateClient(string name)
    {
      //a label
      tryagain :
      this.name=name ;
      try
      {
      //connect to the "localhost" at the give port
      //if you have some other server name then you can use that
     //instead of "localhost"
      tcpc =new TCPClient("localhost",port) ;
      //get a Network stream from the server
      NetworkStream nts = tcpc.GetStream() ;
      //if the stream is writiable then write to the server
      if(nts.CanWrite)
      {
        string sender = "Hi Server I am "+name ;
 Byte[] sends =
 System.Text.Encoding.ASCII.GetBytes(sender.ToCharArray());
 nts.Write(sends,0,sends.Length) ;
//flush to stream 
nts.Flush() ;

//make a loop to wait until some data is read from
 the stream
	while(!readData&&nts.CanRead)
	{
//if data available then read from the stream
  if(nts.DataAvailable)
      {
      byte[] rcd = new byte[128];
    int i=nts.Read( rcd,0,128);
string ree = System.Text.Encoding.ASCII.GetString(rcd);
 char[] unwanted = {' ',' ',' '};
  Console.WriteLine(ree.TrimEnd(unwanted)) ;
//Exit the loop  
  readData=true ;
 }
  }
}
catch(Exception e)
{
Console.WriteLine("Could not Connect to server because "+e.ToString());
Here an exception can be cause if the client is started before starting
//the server.
//A good way to handle such exceptions and give the client
//a chance to re-try to connect to the server
Console.Write("Do you want to try Again? [y/n]: ") ;
    char check = Console.ReadLine().ToChar();
if(check=='y'|| check=='Y')
goto tryagain ;
}
}

//Main Entry point of the client class
 public static void Main(string[] argv)
 {
//check to see if the user has entered his name
 //if not ask him if he wants to enter his name.
  if(argv.Length<=0)
      {
 Console.WriteLine("Usage: DataClient ") ;
 Console.Write("Would You like to enter your name now [y/n] ?") ;
 char check = Console.ReadLine().ToChar();
 if(check=='y'|| check=='Y')
      {
  Console.Write("Please enter you name :") ;
 string newname=Console.ReadLine();
   DateClient dc = new DateClient(newname) ;
   Console.WriteLine("Disconnected!!") ;
  Console.ReadLine() ;
		}
      }
      else
      {
      DateClient dc = new DateClient(argv[0]) ;
      Console.WriteLine("Disconnected!!") ;
      Console.ReadLine() ;
      }
    }
  }
}

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