[Kamailio-Users] Problem with sip uri in contact field

[Iñaki Baz Castillo]

2009/3/3 Geir O. Jensen <geir.o.jensen at uninett.no>:
> Hm. We do rather a lot of things with the SIP uri, both reformatting the
> content and changing hosts depending on the number.

You should NEVER modify a request uri in an in-dialog request, NEVER.


> However, I thought this was OK since anything that was changed would be
> "record routed" and handled via the loose route portion.

Again: RURI must not be modified in an in-dialog request, regardless
of the usage of record-route.


> The ACK that is sent from the SNOM gets caught by the looseroute script.
> Should it?

The ACK from SNOM must pass through looseroute script since, as I
already explained, it is in fact an in-dialog request.



> I'm a bit confused now, can't really see how I'm going to fix this... Our
> script is rather large and ugly :/

Don't modify RURI in loose-route section. Just it.


> I was just under the impression that loose route meant the packets "knew"
> where they were going...

Yes, and that is due to the existance of a Route header. When a proxy
receives an in-dialog request with Route header it must inspect that
header. Usually it contains a proxy local address so the proxy removes
that header and routes the request based on the RURI (but MUST NOT
change the RURI !!!).



-- 
Iñaki Baz Castillo
<ibc at aliax.net>