Sounds good to me John.
Chris.
-----Original Message-----
From: Hearty, John
[mailto:[EMAIL PROTECTED]
Sent: 05 June 2003 17:13
To: Nataraju A.B.; Christer
Holmberg (LMF); Natesan Kannan; Annamalai Meenatchy;
[EMAIL PROTECTED]
Subject: RE: [Sip-implementors]
Record-Route and re-INVITE
This whole thread sounds confusing.
At a high level, the way it works is as follows:
- The UAS in the initial transaction uses Record-Route headers and
Contact in the Invite to set the Route set.
- The UAC in the initial transaction uses Record-Route headers and
Contact in the 200 OK to set the Route set.
- In subsequent requests within the dialog, either UA uses it’s
route set stored from the initial transaction to build Route
headers. It does not rebuild the Route set from Record-Route headers
in subsequent requests, though the Contact is updated if it changes.
- Proxies may Record-Route subsequent requests. This is only
for robustness in the case a UA crashes and restarts, and is willing to
rebuild the session from the mid-dialog request, in which case it uses the
new Record-Routes. If a proxy decides not to include Record-Route in
mid-dialog requests, it will not receive future requests in this case.
John Hearty
Level3
-----Original Message-----
From: Nataraju A.B.
[mailto:[EMAIL PROTECTED]
Sent: Thursday, June 05, 2003 6:27
AM
To: Christer Holmberg (LMF);
'Natesan Kannan'; 'Annamalai Meenatchy'; [EMAIL PROTECTED]
Subject: Re: [Sip-implementors]
Record-Route and re-INVITE
Regards,
-Nataraju A.B.
May you live as long as you wish and love as long as you live.
--Robert A. Heinlein Time Enough for Love. (He may have gotten it elsewhere.)
-----
Original Message -----
Sent: Thursday, June 05, 2003
5:09 PM
Subject: RE: [Sip-implementors]
Record-Route and re-INVITE
A little
strange text in 12.2, I think...
What is
the use of including a mid-session Record-Route header if you can't change the
route set? I am not saying one should be able to change the route set, but I
wonder what the Record-Route header shall be used for...
"
The Record-Route process is designed to work for any SIP
request that initiates a
dialog. INVITE is the only such
request in this specification,
but extensions to the protocol
MAY define others.
"
- Only
the dialog creating requests will insert the RR header, while other requests
must not add the RR header..
-----Original
Message-----
From: Natesan Kannan
[mailto:[EMAIL PROTECTED]
Sent: 5. kes�kuuta 2003 14:39
To: Christer Holmberg (LMF);
'Annamalai Meenatchy'; [EMAIL PROTECTED]
Subject: Re: [Sip-implementors]
Record-Route and re-INVITE
Further
to that, the route-set in the dialog never changes even if there is a
record-route header in the response (UAS just copies this from the request to
the response) to a mid-dialog request.
"Requests
within a dialog MAY contain Record-Route and Contact header
fields. However, these requests do not cause the dialog's
route set
to be modified, although they may modify the remote target
URI."
-----
Original Message -----
Sent: Thursday, June 05, 2003
4:58 PM
Subject: RE: [Sip-implementors]
Record-Route and re-INVITE
There
has been discussions about if it is allowed to change the route set during a
session, but in general the re-INVITE is like any other mid-session request, ie
if you have a route set you include the Route headers...
-----Original
Message-----
From: Annamalai Meenatchy [mailto:[EMAIL PROTECTED]]
Sent: 5. kes�kuuta 2003 13:13
To: [EMAIL PROTECTED]
Subject: [Sip-implementors]
Record-Route and re-INVITE
When we send out re-INVITE do we need to include the Route headers
with it? Does the Record-route header in the re-INVITE change/modify the
route-set? When we respond to the re-INVITE, do we need to include the
Record-route header in the 2xx messsage?
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