[OpenSIPS-Users] UpenSIPS and sips

[Iñaki Baz Castillo]

El Lunes, 6 de Octubre de 2008, Olle Frimanson escribió:
> It works fine which is expected, but when I use
>
> sips:a at domain.com;transport=tls
>
> It also works, but my understanding was that this call should fail.
>
> What are we doing wrong in this case?

It's correct per RFC 3261.

When B sends the INVITE to sips:a at domain.com;transport=tls it means:
- B uses TLS **until** the proxy responsible of the destination domain 
(domain.com).
- The proxy responsible for domain.com receives the request for the AoR 
a at domain.com and finds it in the location service, getting the Contact 
location where a at domain.com is registered.
- This Contact can be sip, sips or whatever.

Of course, the proxy could have a *local* policy to disallow routing calls 
insecurely (sip) to local users if the original request asked for a SIPS 
RURI.


-- 
Iñaki Baz Castillo