Hi rthompson,

Sorry, I missed to mention that in the specific case of terminating a subscription the callback to be invoked is in the TableInfo object paassed in the notifyNewTables.
In particular the forceUnsubscription method.

Anyway, you could also refer to this post for a general discussion on the topic: https://forums.lightstreamer.com/showthread.php?8786-Forcing-subscription-termination&highlight=forcing

Regards,
Giuseppe