[OpenSIPS-Users] rtpengine documentation

[Ovidiu Sas]

Hello Robert,

Take a look at the README file.
Based on the flags, rtpengine can bridge encrypted RTP traffic to
unencrypted RTP traffic. It can also do transcoding.
So yes, it plays man-in-the-middle :)

Regards,
Ovidiu Sas


On Tue, May 19, 2020 at 18:32 Robert Dyck <rob.dyck at telus.net> wrote:

> Perhaps someone with knowledge of the inner workings of rtpengine could
> enlighten us about the interaction between ICE and DTLS. My experience
> suggests that it plays man-in-the-middle and fakes the DTLS negotiation in
> some circumstances.
>
> Rob
>
>
>
> On Tuesday, May 19, 2020 3:15:54 P.M. PDT Giovanni Maruzzelli wrote:
>
>
>
> On Tue, May 19, 2020, 20:10 Ovidiu Sas <osas at voipembedded.com> wrote:
>
>
> opensips rtpengine module provides a
> mechanism to pass those flags as strings to the rtpengine instance.
> Maybe we should add this to the documentation.
>
>
> +1 +1 +1 (me, myself and I)
>
>
> -giovanni
>
>
>
>
> Regards,
> Ovidiu Sas
>
> On Sat, May 16, 2020 at 3:37 PM 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
>
>
>
> --
> VoIP Embedded, Inc.
> http://www.voipembedded.com
>
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>
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