[Opensim-dev] Voice Module

[Teravus Ovares]

NAT traversal, what a fun topic.

See http://en.wikipedia.org/wiki/UDP_hole_punching
See http://www.bford.info/pub/net/p2pnat/

The second of the two links goes into real detail.

In TCP it's mostly useful when 'both' parties are behind a NAT router,
however.   Less useful when just one is because the one computer that's
behind a NAT router can be told to do the 'connecting' to the public one.

The problem, is, it's a hack :D.  Sure, Skype use this hack to peer2peer
connect callers.

Are we planning on having direct end2end communications without a publically
available audio proxying server?

Remember if we are, we'll still need the publically available NAT Traversal
coordinator that does the 'trick'.

Best Regards

Ter


On 2/27/08, Dr Scofield <DrScofield at xyzzyxyzzy.net> wrote:
>
> Sean Dague wrote:
> > I've spent a little bit of time looking at the Voice Module that just
> > got moved into trunk from the RealXtend branch, and I think it's headed
> > in the wrong direction.
> >
> > Embedding voice in the simulator seems like the wrong direction, and
> > much less modular than we were heading for.  Plus, I think that under
> > any reasonable load, it's going to go useless *real fast*.  Given that
> > chat messages can often take 30 seconds in a loaded message, nothing
> > like voice really belongs there.
> >
> > I think a much better approach would be to carve off voice functionality
> > into a seperate VoiceServer, which would let it run on a dedicated
> > machine, ensuring low latency.  I also think that the SLVoice approach
> > of sending all the streams to the client and letting the client do the
> > mixing is a better load approach.
> >
> ansi and i are working on getting the voice caps working from the
> opensim side, so that we can then substitute the vivox daemon without
> the SL client noticing (that's the plan anyhow).
> > Perhaps a hybrid model where after significant avatar moves avatar
> > possitions were sent to the Voice Server, so that you don't have the
> > issue where your ears can be fully devoid of your camera, would be
> > best.  But at the end of the day doing mixing on the server just seems
> > wrong.  Even skype offloads this to clients to do.
> >
> completely agree.
>
>    cheers,
>    dr scofield/aka dirk
>
> --
> dr dirk husemann ---- math & computer science ---- ibm zurich research lab
> RL: hud at zurich.ibm.com - +41 44 724 8573 - http://www.zurich.ibm.com/~hud/
> SL: drscofield at xyzzyxyzzy.net --------------------- http://xyzzyxyzzy.net/
>
> _______________________________________________
> Opensim-dev mailing list
> Opensim-dev at lists.berlios.de
> https://lists.berlios.de/mailman/listinfo/opensim-dev
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://opensimulator.org/pipermail/opensim-dev/attachments/20080227/682eae71/attachment-0001.html>