Hi,
As sanjay had mentioned, Record-Route is used for subsequent requests which
needs to traverse through the proxies. But the responses that are generated as
part of the same transaction would ignore this header and retain it in the
4xx-5xx response as it does not hold any relevance in the current transaction
(Initial transaction would use Via Header for the traversal).
-Hemanth
Manpreet Singh <[EMAIL PROTECTED]> wrote:
Sanjay
Thanks for the response. I believe you were referring to Table 2 right?
The reason I got confused was because the UAC I was testing with was a cisco
5300 which was sending the ACK to the contact address in the 503 which was the
UAS instead of the proxy where it sent the initial INVITE. It seems like a bug.
Thanks
Manpreet
-----Original Message-----
From: Sanjay Sinha (sanjsinh) [mailto:[EMAIL PROTECTED]
Sent: Wednesday, September 06, 2006 10:43 PM
To: Manpreet Singh; [EMAIL PROTECTED]; [email protected]
Subject: RE: [Sip-implementors] Putting Record route in the responses
Record-Route header is used to send subsequent requests after dialog is
established. If Invite is rejected with an error response, there is no dialog
and no need for RR header in error response. You can refer to Table 3 in RFC
3261
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Manpreet Singh
Sent: Wednesday, September 06, 2006 8:04 PM
To: [EMAIL PROTECTED]; [email protected]
Subject: [Sip-implementors] Putting Record route in the responses
Importance: High
Could someone point me to the part of the spec which talks about what all
headers are to be inserted in all the response to an INVITE or any other
request. I am bit lost trying to find the right explanation.
I am specifically looking for a case where a proxy inserts a Record-Route
header in the outgoing invite and the UAS rejects the INVITE with some 5xx or a
4xx response. Now would the 4xx or 5xx response carry the R-R headers from UAS
to the proxy and then back to UAC? I have generally seen the implementations
where 100 doesnt carry and 18x carries it.
thanks
Manpreet
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Wipro Technologies
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