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

2011/12/28 Juha Heinanen jh@tutpro.com:

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Kamailio parser does not detect such header as "P-Asserted-Identity".

Also, it's unfeasible that a proxy checks the syntax of all the headers. Typically a proxy just cares about some few headers.

then use the script function that drops all headers except the ones your gw cares about.

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.