private SDClient OpenOrResumeSession(string ipAddr, ushort port)
{
// create and connect an SDClient instance to the given SD Server
// open or resume a session
// leave the SDClient connected and return it for communication to the server
// Create SDClient and connect to the server
// connect to the SD Server's IP address and port
SDClient client = new SDClient(ipAddr, port);
client.Connect();
// do we already have a session for this server?
if (sessions.ContainsKey(ipAddr))
{
// yes, session already open
// retrieve the sessionId and send resume message to server
ulong sessionId = sessions[ipAddr].sessionId;
// Resume the session on the server
client.ResumeSession(sessionId);
}
else
{
// no, session not open for this server
// open a new session and save the sessionId
client.OpenSession();
// save this open session in the sessions dictionary for later
sessions[ipAddr] = new SDSession(ipAddr, port, client.SessionID);
}
// keep the client open and return it
return(client);
}
public void Close()
{
// close each open session with the various servers
// for each session...
foreach (SDSession session in sessions.Values)
{
// connect to the SD Server's IP address and port
SDClient client = new SDClient(session.ipAddr, session.port);
client.Connect();
// send the close for this sessionId
client.SessionID = session.sessionId;
client.CloseSession();
// disconnect from server
client.Disconnect();
}
sessions.Clear();
}