On 8/17/06, Jeremie Le Hen jeremie@le-hen.org wrote:

Hi,

first of all, excuse me for posting these questions twice, but the previous mail was bloated with too verbose sentences.

I'll be straightforward then.

1. Why do all the configuration files I was given to see on the

web call record_route() when the method is *not* a REGISTER ?

You should understand what record routing is good for: inserting a sip node (in case of *ser it inserts itself) into the path that subsequent requests of an establishing session will follow. REGISTER is one of the sip's methods which does not establish any session (just like MESSAGE, for example). record_route()'ing REGISTERs won't do any harm, except wasting processor cycles.

2) What is the harm of calling fix_nated_contact() in addition

to fix_nated_register() in a REGISTER message ? The configuration file [1] carefully avoids doing this.

The harm is the same as above: if you do fix_nated_contact(), an AVP (with the originating address of the REGISTER, the one that SER sees in the networking layer, not the SIP layer) is set, instructing the registrar to disregard the body of Contact HF and consider only this AVP as true Contact.

[1] http://voip-info.org/wiki/view/OpenSER+And+RTPProxy

Thank you very much. Regards, -- Jeremie Le Hen < jeremie at le-hen dot org >< ttz at chchile dot org >

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