[Standards] Answering directed probe

Tomasz Sterna tomek at xiaoka.com
Sun Sep 18 16:19:54 UTC 2011

Quoting from RFC6121:
4.3.2.  Server Processing of Inbound Presence Probe
"If there is a resource matching the full JID and the probing entity has
authorization via a presence subscription to see the contact's presence,
then the server MUST return an available presence notification, which
SHOULD communicate only the fact that the resource is available (not
detailed information such as the <show/>, <status/>, <priority/>, or
presence extensions)."

May I ask what is the rationale behind this?
Why the server should not answer with the presence stanza of the probed

Tomasz Sterna
Instant Messaging Consultant : Open Source Developer
http://tomasz.sterna.tv/  http://www.xiaoka.com/portfolio

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