[SIPForum-discussion] Problem with NOTIFY recieved afterunregistering

[Nittin Dutt]

You have to understand the combination of various RFCs to get clear
picture. These are RFC 2778, RC 3856 and RFC 3903.

Presence Server has a Presence Compositor which gets its feed from a PUA
(Presence User Agent) and then a send a composite notification to the
Watchers.

So although only the state of ABC has changed but you anyway get a
composite report about your subscription of that event package, which
include state of XYZ as well.

 

However with this you would suspect why waste bandwidth and why not
generate only the requisite notification. So, unsurprisingly there is a
notion of 'Partial Notification' as described in
draft-ietf-simple-partial-notify-10 which describes what it just says in
title. But if you are a client side then you would not want to depend on
this but instead cater for both of composite and partial notification.

 

Hope this helped.

 

-Nittin Dutt

(nutsnduts)

 

 

________________________________

From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of varunjith tk
Sent: 05 August 2008 11:44
To: discussion at sipforum.org
Subject: [SIPForum-discussion] Problem with NOTIFY recieved
afterunregistering

 

HI all

Am trying to retrive presence of my buddies

First am send a SUBSCRIBE with request line ,To, From and contact header
as below


Request-Line: SUBSCRIBE sip:ABC at ims.ap.tieto.com
<mailto:sip%3AABC at ims.ap.tieto.com> ;contacts=presence  
                SIP/2.0
To: <sip:ABC at ims.ap.tieto.com <mailto:sip%3AABC at ims.ap.tieto.com> >
From: "varun_q" <sip:varun_q at ims.ap.tieto.com
<mailto:sip%3Avarun_q at ims.ap.tieto.com> >;tag=42493EC3
Contact: <sip:varun_q at ims.ap.tieto.com
<mailto:sip%3Avarun_q at ims.ap.tieto.com> >


where varun_q is my sip uri and ABC is my buddy whose presence i want to
monitor.After this am getting a NOTIFY with the presence info of
ABC.Then am send again a SUBSCRIBE to XYZ .
Later when ABC unregisters am getting a NOTIFY from XYZ  with presence
info of ABC.Why is this happenig Am expecting tha in the NOTIFY I
shoi\uld have ABC instead of XYZ since ABC has unregistered

Regards
Varun

 

To report this email as spam click here
<https://www.mailcontrol.com/sr/HD0+MzqyPiTTndxI!oX7UlnwUb8+3gKc8NmQ3cMp
XhKzlGSeu+cGwaSKg4vurzl!DN6nioqwbJ05ky06sDJQ0Q==> .

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sipforum.org/pipermail/discussion/attachments/20080808/f6c933df/attachment-0002.html>