[JDEV] Transport readiness

[Luke Tucker]

lets say there's a user already registered with some transport. 
When the user logs on, is there anything that the protocol guarantees 
the transport will send to the user when its OK to start 
sending messages through it (ie it logged on to the service for you
and won't ignore your messages silenty)? Some seem to send presence, is 
this mandated, a courtesy, something that you can make happen for 
any given transport? 

Also, correct me if I'm wrong, but it seems to me that you can't really 
unambiguously determine whether a 'JID' is intended for a transport or 
not unless you're a host. eg joey at joop.sloop.net is this a jabber user 
joey on the jabbers server joop.sloop.net or joey through the joop 
transport on sloop.net (in which case you have to make sure you're 
register with it and that its ready)?  I'm working with some automated 
jabber stuff if context helps make sense out of the questions. 


Thanks, 

- Luke