Hi Sayan,
It is given in the section that Markus has referred to (i.e., Section 15.)
that the caller/uac may send a BYE on either early or confirmed dialogs.
The caller can send a CANCEL but it is not gauranteed to result in
terminating the dialog. This is because the 200 for the INVITE and the
CANCEL may pass each other on the wire.
It is the callee that cannot send a BYE on an early dialog. In any case,
if the callee wants to end the early dialog, it can send a suitable non-2xx
final response.
Thanks and Regards,
A. N. Gautham
[EMAIL PROTECTED] wrote:
Hello Gautham ,
I was under the impression that you cannot send a BYE from the CALLER
(UAC ) , unless you have a confirmed dialog ... and we have to use
CANCEL for the early dialog
Can you let me know which section talks about the BYE behavior for UAC
on early dialog ? I though section 15 says you cannot send a BYE from
the caller on an early dialog
just wanted to clear this up :)
Markus ,
you have written the UAS sends a INVITE , I assumed that's a typo and
you meant the UAC sends an INVITE am I right ?
Regards ,
Sayan
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Gautham
A. N.
Sent: Wednesday, May 04, 2005 4:07 PM
To: [email protected]
Subject: Re: [Sip-implementors] sending BYEs in early dialogs
Hi,
Yes, the UAC is allowed to send a BYE for an early dialog. And, it can
clean up any existing early dialogs 64*T1 seconds after receiving the
first 2xx response, per 13.2.2.4
Thanks and Regards,
A. N. Gautham
Markus Hofmann wrote:
Hello everbody,
I have a question about the following phrases (15 Terminating a
session, RFC 3261):
"The caller's UA MAY send a BYE for either confirmed or early dialogs,
and the callee's UA MAY send a BYE on confirmed dialogs, but MUST NOT
send a BYE on early dialogs."
Do I understand it right, that it is allowed to send a BYE for an early
dialog from the UAC side?
Imagine following scenario:
UAS sends an INVITE to a proxy. The proxy forks the INVITE and two
provisional response with different to tags are coming back. One UAS
sends a 200 OK and the proxy cancels successfuly the INVITE request to
the other UAS.
The UAC has now a confirmed dialog and an early dialog. MAY the UAC
send a BYE the the successful canceled UAS? When can the UAC clean up
the early dialog?
Thank you in advance.
Markus
P.S.: Sorry, I forgot the first line. :(
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