Subject: RE: [Simple] how the presence come to know changes in xcap ???

From: "Anders Lindgren C" <[email-masked]>
Date: Thu, 4 Oct 2007 17:09:54 +0200

Hi
Also an event package as described in
http://www.ietf.org/internet-drafts
<http://www.ietf.org/internet-drafts/draft-ietf-simple-xcap-diff-06.txt>
/draft-urpalainen-sip-xcap-diff-event-02.txt
<http://tools.ietf.org/wg/sip/draft-urpalainen-sip-xcap-diff-event-02.tx
t>  is needed. The xcap-diff i-d defines only a format that can be used
in the SIP NOTIFY.
This means that also the mechanism that xcap-diff-event i-d describes
also needs to get approved before we can get a complete mechanism for
the issue described below.
The problem described is also a general problem as soon as you have e.g
a SIP server not collocated with the XCAP server and the SIP server
needs to be informed when an XCAP document is changed.
Regards
Anders

________________________________

From: [email-masked] [mailto:[email-masked]] 
Sent: den 15 september 2007 12:02
To: Adrian Georgescu
Cc: [email-masked]
Subject: RE: [Simple] how the presence come to know changes in xcap ???

Hi,
 
Just to add on this, my understanding is that the standard way of
sending XCAP resource change notifications will be based in:
 
http://www.ietf.org/internet-drafts/draft-ietf-simple-xcap-diff-06.txt
 
once this mechanism gets approved... Am I right? This way the Presence
Server will be able to subscribe to receive a notification when the
Presence policy of the Presentity changes.

Are the OpenSER and OpenXCAP functions based already on a similar
mechanism?
 
Regards,
 
David

	-------- Original Message --------
	Subject: Re: [Simple] how the presence come to know changes in
xcap ???
	From: Adrian Georgescu <[email-masked]>
	Date: Fri, September 14, 2007 7:53 pm
	To: [email-masked]
	
	Hi Allen,
	
	Your XCAP server must communicate the changes of policy to the 
	Presence agent, by using some out of band mechanism and the
Presence 
	agent must update all watchers statuses and send Notify to
qualified 
	recipients.
	
	See an example of such implementation between OpenXCAP server
and 
	OpenSER Presence agent, the refreshWathers() management
interface 
	implementation:
	
	OpenSER
	
	http://www.openser.org/docs/modules/1.3.x/presence.html#AEN306
	
	OpenXCAP
	
	http://www.openxcap.org/browser/xcap/interfaces/openser.py
<http://www.openxcap.org/browser/xcap/interface s/openser.py> 
	
	Regards,
	Adrian

	> From: Allen Allen <[email-masked]>
	> Subject: [Simple] how the presence come to know changes in
xcap ???
	> To: [email-masked]
	> Message-ID: <[email-masked]>
	> Content-Type: text/plain; charset="iso-8859-1"
	>
	> Dear All,
	> I am facing one problem in Presence server design. Any one
please 
	> help me..
	> Problem:
	> userA subscribes to Presence server . Presence se rver sends 
	> watcher info notify to user B containing watcher as userA
status 
	> pending. Now the userB changes authorizaion policy such that
it 
	> allows or denies userA. Now the question is how presence
server 
	> comes to know whether userB done changes or not. is there any 
	> interface between xcap server and presence server ?
	> userB can do changes in authorization policy any time. how it 
	> triggers presence server such that presence server sends
notify to 
	> userA with userB presentity.
	>
	>
	> Thanks in advance..
	> Regards
	> Allen

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