/*
* BELOW METHODS ARE FOR THE SERVER'S USE ONLY
*/
/// <summary>
/// A method to be called as the server starts. This will assure that the server is
/// constently listenting fr clients and adds them when a connection is recognized by
/// a TCP listener.
/// </summary>
/// <param name="CallMe"></param>
public static void ServerAwaitingClientLoop(listenerState.Callback CallMe)
{
System.Diagnostics.Debug.WriteLine("Listening for connections");
//Creates TCP listener
TcpListener lstnr = new TcpListener(IPAddress.Any, DEFAULT_PORT);
//Stores the state of the listener in a listener state
listenerState ls = new listenerState(lstnr, CallMe);
//Begins an event loop for listening for IP addresses.
ls.theListener.BeginAcceptSocket(AcceptNewClient, ls);
}
/// <summary>
/// Callback to be used when someone tries to connect to the server. Performs the necessary junk and then
/// calls the ListenerState's callback
/// </summary>
/// <param name="ar"></param>
private static void AcceptNewClient(IAsyncResult ar)
{
System.Diagnostics.Debug.WriteLine("Client connected");
//retrievs the listener state that triggered this method
listenerState ls = (listenerState)ar.AsyncState;
//gets socket from the established connection
Socket socket = ls.theListener.EndAcceptSocket(ar);
//Grabs the IP address from the remote end of our socket
IPAddress ip = IPAddress.Parse(((IPEndPoint)socket.RemoteEndPoint).Address.ToString());
//Creates a socket state
SocketState ss = new SocketState(socket, ip.GetHashCode());
//Perfrom's callback method retrieved from the newly connected socket
ls.CallMe(ss);
//Restarts the event loop to listen for more clients
ls.theListener.BeginAcceptSocket(AcceptNewClient, ls);
}
