[Bug 27752] Deficiencies in Location setting API

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=27752

--- Comment #8 from Simon McVittie <simon.mcvittie at collabora.co.uk> 2010-08-04 08:18:20 PDT ---
(In reply to comment #7)
> (In reply to comment #0)
> > * Clients can't tell when LocationAccessControl has changed.
> 
> Not actually our bug. In XMPP, you can only tell what the access control model
> is by doing a network round-trip (for a Data Form... everyone's favourite data
> structure), and you can't tell when it changed.

... unless the pubsub#notify_config option is set to true, in which case all
subscribers to the node (!), including the publisher, will be notified.
XEP-0163 is silent on whether pubsub#notify_config has to be supported, or on
by default, on PEP servers.

PEP servers are required to support at least the "presence", "open", "roster"
and "whitelist" access models (which are our RPACT_Publish, RPACT_Open,
RPACT_Roster (but possibly with multiple groups) and RPACT_Whitelist), but MAY
support others. Discovering what's allowed takes a round-trip, which we'd have
to do before CONNECTED.

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