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Re: [Sip] Doubt about SIP Specific Event Notification behaviour
The spec doesnt call this out, since I have no idea why such a thing
would happen. But the right thing to do is undoubtedly (c), have the
server terminate the subscription by sending a NOTIFY with a
terminated state.
-Jonathan R.
José Soler Lucas wrote:
Hi everyone,
trying to imagine a service based on the SUBSCRIBE - NOTIFY methods of
SIP described in RFC 3265 I have came across a doubt that I was not able
to find a respose to through the different documents I have checked.
Could anyone out there please give me any hint on the matter?:
Imagine I have a SIP client that subscribes to a certain event happening
in a server. The subscription is acepted and performs properly. After a
moment, while the subscription is still active, there is an internal
problem in the server that prevents further NOTIFYes towards the
subscribing client. The question is:
a) Does the server send a 5xx message towards the client? or
b) Does the server send a NOTIFY with a "pending" status indicating a
temporal suspension of the subscription? or
c) Does the server send a NOTIFY with a "terminated" status forcing the
end of the subscription?
d) Should the server send rather [5xx] followed by
[NOTIFY(status=pending/terminated)]?
If the answer is (a), what should the behavior of the client then be, to
assume the subscription as terminated?
Thanks in advance for your help.
Best regards,
josé
--------------------------------------------
José Soler Lucas, M.Sc.Telecom.E.
PhD Student
Networks Competence Area
Research Center COM (Communications, Optics and Materials)
Technical University of Denmark
Building 343, DK 2800 Kgs. Lyngby, Denmark.
Phone: +45 45 25 38 08 (direct)
Fax: +45 45 93 65 81
E-mail: jsoler@com.dtu.dk
Web: http://www.com.dtu.dk/
----
Cellular: +45 22 27 48 22
--------------------------------------------
--
Jonathan D. Rosenberg, Ph.D. 600 Lanidex Plaza
Chief Scientist Parsippany, NJ 07054-2711
dynamicsoft
jdrosen@dynamicsoft.com FAX: (973) 952-5050
http://www.jdrosen.net PHONE: (973) 952-5000
http://www.dynamicsoft.com
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