On 5/12/10 9:12 AM, Philipp Hancke wrote: > Daniel V. Grillo wrote: >> Hi Folks, >> >> I've built a minimal xmpp client to keep track of contacts presence >> status. In previous versions, if a user asked a contact for a >> subscription to presence, my client automatically granted it. Now I >> want to notify a >> contact of such a request and let them grant or reject it. I have it >> working according to rfc 3921 section 8. >> >> I do have one question/issue though. If a users presence request is >> denied by the contact while the user is online, he gets notified of the >> rejection as defined in section 8.2.1 (using the ejabberd server). I >> can then pop up a notification stating "so and so rejected your >> request". But if the user is offline when the rejection happens, and >> then logs in, he gets no such notification. He just gets his roster >> with that contact in the "none" state with the "ask" flag stripped and >> no indication of how that contact got that way. Since a contact can end >> up in the none state in various ways, I can't use that fact to pop up a >> notification. So my question is, how can I give a user notification that >> his subscription requests were rejected while he was offline? I see >> that psi has the same issue and so does Exodus. They give rejection >> notifications while the user is online, but not when he got the >> rejection while logged off and then logs on. Any way to implement such a >> feature? > > This might be possible by storing the unsubscribed stanza on the server > when the user is offline, ie. adding a rule similar to the fifth rule of > section 3.1.3 in section 3.2.3 in 3921bis-06, and then sending this when > the roster is fetched.
Yes, I suppose we could add a note about this to rfc3921bis (currently we assume that the unsubscribed is merely an FYI and not something that the receiving server needs to continually poke the client about). /psa
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