[sr-dev] LCR: defunct_gw() is dangerous

[Juha Heinanen]

Iñaki Baz Castillo writes:

> Anyhow, it could occur that the request contains a valid SIP header
> (token: value) but with an invalid grammar (i.e. a P-Asserted-Identity
> with a wrong URI value). The proxy could not check it (because in some
> configuration it just ignores such a header) but later the UAS/GW
> could inspect it and drop the request since the header is invalid (and
> it could reply a 400 or just drop the request).

where in rfc3261 is it stated that UAS is allowed to drop a request that
it could respond to (i.e., the request has valid via header).

-- juha