[Bug 43035] A method to avoid downloading the roster at every connection

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=43035

--- Comment #4 from Alban Crequy <alban.crequy at collabora.co.uk> 2011-11-22 07:17:23 PST ---
(In reply to comment #2)

> Be aware of this bit from RFC 3921 §7.3: "If an available resource does not
> request the roster during a session, the server MUST NOT send it presence
> subscriptions and associated roster updates."

RFC 3921 is obsoleted by RFC 6121 and that bit was removed and replaced by the
following explanation.

RFC 6121 §4.4.3: "Upon receiving presence from the user, the contact's server
MUST deliver the user's presence stanza to all of the contact's available
resources."

Where "available resource" is defined by §2.2: "After a connected resource
sends initial presence (see Section 4.2), it is referred to as an available
resource."

This is orthogonal  to an "interested resource": "If a connected resource or
available resource requests the roster, it is referred to as an interested
resource."


So I would say the new RFC helps us :)

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