Sorry, not sure I understand.

The documentation says these options will update c= and m= but in my case they aren't applying and I don't know why.

Are you saying c= and m= won't be updated if ICE is being forced?

---------

https://www.kamailio.org/docs/modules/4.4.x/modules/rtpengine.html#rtpengine.f.rtpengine_offer

replace-origin - flags that IP from the origin description (o=) should be also changed.

replace-session-connection - flags to change the session-level SDP connection (c=) IP if media description also includes connection information.

On Friday, 19 April 2019, 10:15:28 GMT+1, Daniel Tryba <d.tryba@pocos.nl> wrote:

On Fri, Apr 19, 2019 at 08:52:30AM +0000, David Dean wrote:
> I'm using the following rtpengine_offer() to force the use of ICE relay and also replace o= and m=
> ?? ??rtpengine_offer("replace-origin replace-session-connection ICE=force-relay RTP");
>
> The SDP is being updated to include an ICE relay candidate, but the IP addresses in the o= and m= lines are not changing??to the servers IP address (X.X.X.X).


This is a feature, not a bug: https://github.com/sipwise/rtpengine

"
* ICE

...
With force-relay, existing ICE candidates are left in place except relay
type candidates, and rtpengine inserts itself as a relay candidate. It
will also leave SDP c= and m= lines unchanged.

This flag operates independently of the replace flags.
"

Strange that media adress doesn't work, but try replace. Maybe that
works?


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