[OpenSER-Users] Saving public IP in CDR

[Iñaki Baz Castillo]

El Thursday 09 August 2007 17:39:12 Andreas Sikkema escribió:
> Hi,
>
> I'm trying to do add accounting to our OpenSER
> server. Getting accounting to work is easy but
> I'm having trouble saving client IP addresses with
> every CDR.
>
> Most of our SIP UAs are behind some form of
> NAT and to "prove" that calls have originated at
> the client I want to save the public IP address
> and as extra service also the private IP
> address of the UA.
>
> Saving the private IP address is easy, $Ri
> contains this value. I'm having trouble finding out
> what to do to save the public IP address. I thought
> that since I'm using fix_contact() I could save the
> contact header body, but $ct still contained the
> private IP address.

Yes, you are right, it seems that "fix_nated_contact()" is applied after the 
message ahs been proccesed by OpenSer, so you can't see the modified header 
during the internal process.

You could use variable $si:
  $si - reference to IP source address of the message

so that is the public IP from which your OpenSer has received the message. 
Anyway note that if there is another proxy X between the NAT router and your 
OpenSer the $si will contain the public IP of that proxy X.





-- 
Iñaki Baz Castillo
ibc at in.ilimit.es