[Devel] rtpproxy code

[Marco Holmer]

Ok, that was probably too unclear.
That's true, Klaus, rtpproxy works just fine with SRTP as it is just the RTP 
payload which gets protected and thus is shuffeled back and forwards without 
any changes hence no problems so far.
The integration is about bridging between two clients when the proxy runs at 
the border of a network, say an internal UA talking RTP to the proxy, which 
itself talks SRTP to the other endpoint on the outside.
This would probably require a change to the nathelper module as well, as it 
must be signalled to the rtpproxy when to actually process 
(protect/unprotect) the packets and what to do for which side.

regards,
Marco


On Tuesday 07 March 2006 11:59, you wrote:
> Marco Holmer wrote:
> > Hi all,
> >
> > I'm currently working on the rtpproxy trying to integrate SRTP.
>
> I'm wondering why there are changes needed to support SRTP. To be honest
> I've never read the SRTP RFC but I always thought that rtpproxy is a
> "stupid" UDP proxy, thus it is irrelevant if the UDP payload is RTP or
> SRTP. Is my assumption false?
>
> regards
> klaus
>
> > Is someone on this list familiar with the sources of it?
> > I'm trying to find out about the two sendto calls on the lines 1244 and
> > 1405 of main.c.
> > Can anyone shed some light on what exactly the two calls do? Why are
> > there two (ok, it does not seem to be for RTP and RTCP resp.) and what do
> > they do? Pointing to some other ressource like documentation or  a forum
> > or anything is very welcome, too.
> >
> > thanks,
> > Marco
> >
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