protected virtual void HandleXfr(NotificationConnection c, Command cmd)
{
// >>> XFR TrID SB
// <<< XFR TrID SB Address SP AuthChallengeInfo
if (cmd.Params[0] != "SB") // only XFRs to Switchboard servers are supported, besides what else is there to XFR to?
{
Command errResponse = new Command(Error.SyntaxError, cmd.TrId);
Server.Send(c, errResponse);
return;
}
// provision the new session
SwitchboardServer sb = SwitchboardServer.Instance;
SwitchboardSession session = sb.CreateSession(c.User);
SwitchboardInvitation invite = session.CreateInvitation(c.User);
invite.Protocol = c.Protocol.Name;
Command xfrResponse = new Command(Verb.Xfr, cmd.TrId, "SB", sb.GetEndPointForClient(c.Socket.LocalEndPoint).ToString(), "CKI", invite.Key);
Server.Send(c, xfrResponse);
}
protected virtual void HandleCal(SwitchboardConnection c, Command cmd)
{
// >>> CAL TrID UserHandle
// <<< CAL TrID Status SessionID
String recipientHandle = cmd.Params[0];
User recipient = User.GetUser(recipientHandle);
if (recipient.NotificationServer == null ||
(recipient.Status & Status.Nln) != Status.Nln)
{
// the user is not online (or is hidden)
Command responseErr = new Command(Error.SwitchboardFailed, cmd.TrId); // I guess?
Server.Send(c, responseErr);
return;
}
// if the invited user is allowed to contact the calling user (or vice-versa) then that user's notification server sends a RNG
// otherwise, SB returns an error
// TODO: Check permissions first
User caller = c.User;
SwitchboardSession session = c.Session;
SwitchboardInvitation invite = session.CreateInvitation(recipient);
recipient.NotificationServer.ASNotifyRng(caller, recipient, invite);
Command responseOk = new Command(Verb.Cal, cmd.TrId, "RINGING", session.Id.ToStringInvariant());
Server.Send(c, responseOk);
}