El Wednesday 25 June 2008 03:34:26 Rockson Li (zhengyli) escribió:
> I think RFC3581 is primarily used in NAT transversal, Making the received
> and rport addition mandatory is to speed up response delivery This is not
> against RFC3261, UA compliant with RFC3581 also is compliant with RFC3261
> in this respect.
I've realized that some UAS and proxies set the "rport" param but don't
add "received" parameter (if it's not necessary). For example:
- Request from 1.2.3.4:5080 received from 1.2.3.4:5999 with this "Via":
Via: SIP/2.0/UDP 1.2.3.4:5080;rport;branch=qweqweqwe
- The reply sent by the UAS/proxy is:
Via: SIP/2.0/UDP 1.2.3.4:5080;rport=5999;branch=qweqweqwe
Is it incorrect then? is mandatory adding "received" parameter (even if not
neccesary in RFC3261) if the UAS/proxy is RFC3581 compliant and the request
comes with "rport" parameter?
--
Iñaki Baz Castillo
[EMAIL PROTECTED]
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