when we use Jitsi in SIP/SIMPLE environment, We found it does subscribe
presence, presence.winfo and message-summary correctly when it signin to SIP
server; but when it sign off, it only unsubscribe the presence event
(SUBSCRIBE with Expires: 0), but not presence.winfo and message-summary
events. Is it correct or a bug.
Can it be fixed?
Thank you very much in advanced!