If I am connected to a room from one resource, with a certain nickname, and then I try to connect from another resource with the same nickname, I get a 409 conflict. The bare JID is the same, and according to XEP-0045 7.1.10:
"However, if the bare JID (<firstname.lastname@example.org>) of the present
occupant matches the bare JID of the user seeking to enter the room,
then the service SHOULD allow entry to the user, so that the user has
two (or more) in-room “sessions” with the same roomnick, one for each
resource. If a service allows more than one occupant with the same bare
JID and the same room nickname, it SHOULD route in-room messages to all
of the user’s resources and allow all of the user’s resources to send
messages to the room;"
Is there a setting for this somewhere? Or has this just not been implemented yet?