2 Aug
2012
2 Aug
'12
5:21 p.m.
2012/7/30 Daniel-Constantin Mierla <miconda(a)gmail.com>om>:
There is one situation that will not work even with
gruu/ob -- in sip a
phone can call without registering. A gruu contact is obtained via
registration and then used for next requests by UA itself. By calling
without registering, there is no gruu contact for it, so adding the src ip
and port as alias parameter is still needed. I don't remember I have seen
any rfc making registration mandatory before calling.
Hi Daniel, RFC 5626 (Outbound) assumes that the UA registers after
connecting to the (Outbound Edge) Proxy.
In other words, just to summarize the gruu versus
contact aliasing.
I don't think this iw "gruu versus contact aliasing" but "outbound
versus contact aliasing".
Outbound means that the proxy inserts a flow token in the Record-Route
username and then, when a request with Route header arrives to the
proxy, its Route username is inspected and the associated connection
retrieved for routing the request without inspecting the RURI (unless
it's a GRUU RURI).
Regards.
--
Iñaki Baz Castillo
<ibc(a)aliax.net>