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Cross posting: Re: [rtcweb] SDP is not suitable for WebRTC

From: Ted Hardie <ted.ietf@gmail.com>
Date: Tue, 30 Jul 2013 10:18:02 +0200
Message-ID: <CA+9kkMDx26E2NtznBtOuxei5p=5VmQkRnUGw7qqfHn7-455TAQ@mail.gmail.com>
To: Iņaki Baz Castillo <ibc@aliax.net>
Cc: Silvia Pfeiffer <silviapfeiffer1@gmail.com>, "rtcweb@ietf.org" <rtcweb@ietf.org>, "public-webrtc@w3.org" <public-webrtc@w3.org>

We have asked that folks avoid cross-posting, in order to keep it easier
for folks to follow a thread.  Please keep this discussion on public-webrtc.


Ted Hardie

On Tue, Jul 30, 2013 at 9:45 AM, Iņaki Baz Castillo <ibc@aliax.net> wrote:

> 2013/7/30 Silvia Pfeiffer <silviapfeiffer1@gmail.com>:
> > Since you seem to be doing a full mesh and you seem to be wanting to
> > receive from everyone and be able to talk back to everyone, wouldn't
> > this need to be 8 different SDP offers in a full mesh network rather
> > than one SDP offer with 13 different m-lines? I don't follow how each
> > of the recipients would pick the right m-line for themselves...
> Silvia, I don't feel I am doing a full mesh, but something really
> common, which is:
> - I contact, from my browser, to a conference server in which there is
> an active conference with N participants.
> - I provide my audio and video tracks to the conference server.
> - The server provides me with N audio/video tracks belonging to N
> participants.
> - I don't want to do a second SDP O/A round trip.
> Please, note that my browser has a signaling and a media session with
> the conference server. This is, the endpoints are my browser and the
> conference server. The fact that the conference server acts as a mixer
> by joining all the participants changes nothing. The browser
> establishes a single RTC session with the server. This is not an
> exotic scenario at all.
> And no, I do not want to send 8 different SDP offers since I will
> mantain just a single RTC session (with the conference server). All
> the participants do the same, and the conference server is responsible
> of taking all the tracks from participants and send them to all the
> participants (via separate tracks).
> I would like to hear the opinion of those in favour of SDP for WebRTC,
> since what I am clearly stating is that SDP and Plan-Unified is *bad*
> for this common scenario.
> --
> Iņaki Baz Castillo
> <ibc@aliax.net>
> _______________________________________________
> rtcweb mailing list
> rtcweb@ietf.org
> https://www.ietf.org/mailman/listinfo/rtcweb
Received on Tuesday, 30 July 2013 08:18:29 UTC

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