If the message has a session id of a session that the user is part of, then message handling is governed by the finite state machine table described below. Otherwise, the messages should be handled as follows:
The Joiner will ignores all messages without session id.
If the message has a session id
- of wich the joiner is not a party - the joiner will react as follows:
* ''Participant Info'': the joiner begins a session by appending itself to the list. * ''Session Confirmation'': re-try to join.