[jdev] Making sense of different presence info from different endpoints

[Chris Eagan]

Hi,

Is there any guidance or recommendation about how an XMPP client should show a contact's presence if it receives different presence information from different endpoints?

Examples:

Say alice at aaa.com<mailto:alice at aaa.com> has bob at bbb.com<mailto:bob at bbb.com> in her contact list.

1: alice at aaa.com<mailto:alice at aaa.com> sends a probe to bob at bbb.com<mailto:bob at bbb.com> and receives back presence from 2 different endpoints, each with the same priority - one has no show type and the other has show=dnd.  Should alice at aaa.com<mailto:alice at aaa.com>'s client show that bob at bbb.com<mailto:bob at bbb.com> is available (e.g. "green") or busy (e.g. "red")?

2: bob at bbb.com<mailto:bob at bbb.com> has 2 endpoints that have recently sent presence updates with no type or show.  alice at aaa.com<mailto:alice at aaa.com>'s client show's bob at bbb.com<mailto:bob at bbb.com> as available.  bob at bbb.com<mailto:bob at bbb.com> signs out one of his endpoints and that endpoint sends a presence unavailable stanza.  One could assume bob at bbb.com<mailto:bob at bbb.com> is still available because his other endpoint has not sent a presence update.  However, it appears some clients will actually show bob at bbb.com<mailto:bob at bbb.com>as offline in this case.

3: bob at bbb.com<mailto:bob at bbb.com> sends different statuses in presence stanzas from different endpoints, how should alice at aaa.com's<mailto:alice at aaa.com's> client present this?

Is there any "official" or documented guidance on how alice at aaa.com<mailto:alice at aaa.com>'s client should behave in these cases?

Thank you,

Chris Eagan

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