[OpenSER-Users] Bug in 200 to CANCEL (wrong To_tag)

[Iñaki Baz Castillo]

El Friday 26 October 2007 14:27:36 Aymeric Moizard escribió:
> First: from rfc: "the To tag of the response to the CANCEL and the To tag
>     in the response to the original request SHOULD be the same"
>
> -> Thus, there is no reason to send the tag from a provisionnal response
> in the CANCEL answer. THIS IS ONLY FOR FINAL RESPONSE (the 487), never
> PROVISIONNAL (180 or 183). (However, the tag is always the same on
> endpoints, but still this is not true on proxy). That's how I understand
> it.
>
> -> SHOULD means that it's not mandatory. So if one application like
> asterisk tries to match the To tag of CANCEL answer and the to tag of a
> final response then this application is NOT compliant to rfc3261.

Thanks, in Sip-implementators mailist I got a similar response:
  
https://lists.cs.columbia.edu/pipermail/sip-implementors/2007-October/017685.html

I thisnk all is clear :)

Thanks a lot.



-- 
Iñaki Baz Castillo
ibc at in.ilimit.es