[SR-Users] When to rewrite o= in SDP ?

Khoa Pham onmyway133 at gmail.com
Fri Mar 1 12:47:06 CET 2013


Hi, I mistype. What I want to know is what affects Kamailio decision in
rewriting c= in SDP.

In http://kamailio.org/docs/ser-getting-started/SER-GettingStarted.pdf, I
see that

 if (isflagset(6)) {
 force_rport();
 fix_nated_contact();
 force_rtp_proxy();
 }

Which means that Kamalio only cares if the caller is behind NAT or not.

Does it care about caller's symmetric NAT, using STUN, callee's nat type ?


On Fri, Mar 1, 2013 at 10:38 AM, Khoa Pham <onmyway133 at gmail.com> wrote:

> Hi, I read in http://kamailio.org/docs/modules/1.4.x/nathelper.html that
> Kamailio might rewrite ip address in o= in SDP to facilitate NAT traversal.
>
> It may decide to use to original IP or use IP of RTP server. What factors
> affect its decision ?
>
> --
> Khoa Pham
> HCMC University of Science
> Faculty of Information Technology
>



-- 
Khoa Pham
HCMC University of Science
Faculty of Information Technology
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