/// <summary>
/// Sets up a new <see cref="RoutedSession"/> and immediately begins listening
/// for data to propagate to both sides of a session. This method should be
/// invoked after a client has connected to a route listener and the connection
/// socket has been accepted by the listener. A new socket will be created by this
/// method to the routed target host.
/// </summary>
/// <param name="route"></param>
/// <param name="clientSocket"></param>
/// <returns></returns>
public static RoutedSession BeginSession(Route route, Socket clientSocket)
{
var newSession = new RoutedSession {
ClientSocket = clientSocket
};
newSession.Route = route;
var extnSocket = new TcpClient();
IPAddress ipaddr = null;
if (!IPAddress.TryParse(route.TargetHost, out ipaddr))
{
ipaddr = Dns.GetHostAddresses(route.TargetHost).First();
}
extnSocket.Connect(new System.Net.IPEndPoint(ipaddr, route.TargetPort));
newSession.ClientSocket = clientSocket;
newSession.ExtensionSocket = extnSocket.Client;
newSession.ClientEndPoint = (IPEndPoint)newSession.ClientSocket.RemoteEndPoint;
newSession.Monitor();
return(newSession);
}
private void TcpListener_AcceptSocket(IAsyncResult ar)
{
// Get the listener that handles the client request.
var listenerkvp = (KeyValuePair <string, TcpListener>)ar.AsyncState;
var name = listenerkvp.Key;
var listener = listenerkvp.Value;
var route = Routes[listenerkvp.Key];
try
{
// Start the session
var session = RoutedSession.BeginSession(route, listener.EndAcceptSocket(ar));
session.Closed += new EventHandler(Session_Closed);
ActiveSessions.Add(session);
}
catch { } // skip the session, it failed
// continue listening
var stateObj2 = new KeyValuePair <string, TcpListener>(route.Name, listener);
listener.BeginAcceptSocket(new AsyncCallback(TcpListener_AcceptSocket), stateObj2);
}