static void Main(String[] args)
{
// Declare Variables and objects
int port = 0;
TimeStamp timeStamp = new TimeStamp();
// Get port number from commandline argument
Int32.TryParse(args[0], out port);
// Report status
Console.WriteLine(timeStamp.GetCurrentTimeStamp + "Server Starting...\n\n");
// Setup listener for client
TcpListener listener = new TcpListener(IPAddress.Any, port);
try
{
// Start listening for client
listener.Start();
Console.WriteLine(timeStamp.GetCurrentTimeStamp + "Server is running on port: {0}", port);
Console.WriteLine(timeStamp.GetCurrentTimeStamp + "Waiting for a connection...");
// Accept connection request from client
Socket socket = listener.AcceptSocket();
Console.WriteLine(timeStamp.GetCurrentTimeStamp + "Connection Accepted From: {0}", socket.RemoteEndPoint);
Console.WriteLine(timeStamp.GetCurrentTimeStamp + "Waiting for client activity...\n\n");
// Setup variable for message from client
byte[] msg = new byte[4096];
// populate variable with encoded message
int receive = socket.Receive(msg);
Console.WriteLine(timeStamp.GetCurrentTimeStamp + "Received Message From Client: ");
// Declare variable to store message
string decodedMessage = "";
// iterate through message
for (int i = 0; i < receive; i++)
{
// Store decoded message
decodedMessage += Convert.ToChar(msg[i]);
}
// Remove ROT13 cypher
Console.WriteLine(ROT13.Transform(decodedMessage));
// Send Message back to client to let know it was recieved.
ASCIIEncoding encode = new ASCIIEncoding();
socket.Send(encode.GetBytes(ROT13.Transform(timeStamp.GetCurrentTimeStamp +
"Message received.")));
Console.WriteLine(timeStamp.GetCurrentTimeStamp + "Sent Response to client");
// Clean up
socket.Close();
listener.Stop();
}
catch (Exception e)
{
// OnError: report status
Console.WriteLine(timeStamp.GetCurrentTimeStamp + "Error: " + e.Message);
} finally
{
// Exit the program
Console.WriteLine("Press any key to exit.");
Console.ReadKey();
Environment.Exit(0);
}
}