2011/12/28 Juha Heinanen jh@tutpro.com:
Iñaki Baz Castillo writes:
The client and the GW are UA's, but the proxy is just a proxy. As a proxy, I cannot decide which headers are mandatory and which ones can be dropped. The UAC (client) and UAS (gw) could decide to negotiate some SIP extension I'm not aware of, or I do know but it's transparent for me (the proxy), for example PRACK usage which involves new headers.
as i already said, then fix your gw to reply with '400 bad request'.
Juha, the wrong header I meant is not a wrong P-Asserted-Identity, but a malformed text that makes *all* the SIP message invalid. So a proxy or server receiving it can just *drop* the request (the same Kamailio does if the Request URI contains a falmormed URI).
So there is nothing to fix in the GW. It's behaving 100% correctly.
Regards.