[OpenSIPS-Users] rtpengine documentation

Callum Guy callum.guy at x-on.co.uk
Mon May 18 10:06:08 EST 2020


Hi Rob,

I'm interested to follow your thread to hear more about this, I have
found that some flags are valid yet undocumented during initial setup
of some RTC compatable proxies.

Two in particular: DTLS-passive and SDES-disable both of which appear
to influence behaviour of RTPEngine in accordance with the RTPEngine
documentation.

YMMV however it might help you to try this format as you proceed with testing.

Good luck!

Callum


On Sat, 16 May 2020 at 20:38, Robert Dyck <rob.dyck at telus.net> wrote:
>
> I am wanting to convert my config/script to use rtpengine instead of rtpproxy.
> I think it would better deal with webrtc. After looking at some examples I
> found, I see a couple of parameters that are not mentioned in the opensips
> documentation. First there is the offer/answer option ice=force-relay and
> secondly DTLS=passive.
>
> Are these options obsolete/deprecated/intentionally omitted?
>
> On the subject of DTLS I noticed that when I use ice=force in offer and answer
> rtpengine sends new DTLS fingerprints to the parties. I appears to operate as
> back-to-back DTLS agent. I know this because both UAs sent SHA-256
> fingerprints but they received SHA-1 fingerprints. This may have worked but
> one UA will only accept SHA-256 and it drops the call.
>
> The documentation does not mention that the ice= option can influence DTLS.
>
> Regards, Rob
>
>
>
> _______________________________________________
> Users mailing list
> Users at lists.opensips.org
> http://lists.opensips.org/cgi-bin/mailman/listinfo/users

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