Hi Sreejesh,
Whatever Record-Routes are inserted by the intermediate elements
during the initial INVITE message become the Route set for that dialog.
So in Bob's case, the R-Rs in the INVITE message should be used to
construct the Route set for further messages (BYE in your example), and
in Alice's case, the R-Rs in the 200 OK to INVITE should be used as the
Route set for further messages (starting with ACK).
Regards,
Subhash Nayak
Sonus Networks
http://www.sonusnet.com
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Sreejesh
Sent: Monday, May 08, 2006 5:23 PM
To: Sip-Implementors
Subject: [Sip-implementors] Query regarding Service-Route and
Record-RouteHeaders
GlacierHi,
Regarding the call-flow depicted in Section 3.2 of RFC 3665.
Alice Proxy 1 Proxy 2 Bob
| | |
|
| INVITE F1 | | |
|------------->| | |
| 407 F2 | | |
|<-------------| | |
| ACK F3 | | |
|------------->| | |
| INVITE F4 | | |
|------------->| INVITE F5 | |
| 100 F6 |------------->| INVITE F7 |
|<-------------| 100 F8 |------------>|
| |<-------------| |
| | | 180 F9 |
| | 180 F10 |<-------------|
| 180 F11 |<-------------| |
|<-------------| | 200 F12 |
| | 200 F13 |<-------------|
| 200 F14 |<-------------| |
|<-------------| | |
| ACK F15 | | |
|------------->| ACK F16 | |
| |------------->| ACK F17 |
| | |------------->|
| Both Way RTP Media |
| <===========================>|
| | | BYE F18 |
| | BYE F19 |<-------------|
| BYE F20 |<-------------| |
|<-------------| | |
| 200 F21 | | |
|------------->| 200 F22 | |
| |------------->| 200 F23 |
| | |------------->|
| | |
|
Consider the case where Alice and Bob each were provided with
Service-Route
during Registration response.
In such a scenario, consider the BYE Request generated by Bob [F18].
What should the Route header value be
- Service-Route header value assigned to Bob's AOR [during
Registration] or
- Mirrored value of Record-Route header for that dialog.
Secondly, when Alice gets a 200 OK [F14] with Record-Route, what should
the
Route header be
- Service-Route header value assigned to Alice's AOR [during
Registration] or
- value of Record-Route header recieved in 200 OK.
Any Inputs in this Regard would be highly appreciated.
Thankz in advance
Regards,
Sreejesh
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