[webkit-dev] About the " Video conferencing and peer-to-peer communication" implementation

Harald Alvestrand hta at webrtc.org
Thu Nov 10 02:23:38 PST 2011

Re status on data transmission:

The main discussion channel for the data stream is the IETF working group:
rtcweb at ietf.org
The core draft discussing the protocol tradeoffs is
draft-jesup-rtcweb-data-01, available from the usual IETF draft places.

The main discussion channel for the API is the W3C working group:
public-webrtc at w3.org

What protocol to use for the data channel is a subject of active discussion.
At the moment, the proposal that seems to have the least resistance for a
data channel protocol is userspace SCTP over DTLS over UDP. That it has
"the least resistance" is not the same as "no resistance" - there are pros
and cons to both this and all other solutions.

                 Harald (chair of the W3 WG)

On Thu, Nov 10, 2011 at 9:57 AM, Charles Pritchard <chuck at jumis.com> wrote:

> On 11/10/11 12:32 AM, Kalle Vahlman wrote:
>> 2011/11/10 Victor LI<rtjava at hotmail.com>:
>>> Hi,
>>> Does the webkit implements the chapter " Video conferencing and
>>> peer-to-peer
>>> communication" now?
>>> if it doesn't , is there any plan to support it?
>> There are people working on it:
>>   https://lists.webkit.org/**pipermail/webkit-dev/2011-**
>> November/018445.html<https://lists.webkit.org/pipermail/webkit-dev/2011-November/018445.html>
>> I suppose bugzilla has bugs for this, although they are not mentioned
>> in the announcement.
>> Would probably be a good idea to have a tracking bug for this though?
>>  Seems like there's need for consensus; a tracking bug might help
> webkit-devs develop an internal consensus.
> From the spec, data section: "there is currently not enough agreement on
> the data channel to write it up."
> http://www.w3.org/TR/webrtc/#**the-data-stream<http://www.w3.org/TR/webrtc/#the-data-stream>
> Also, on the p2p communication side:
> Seems like the only means of passing arbitrary binary data over P2P in
> this spec is to flash a QR code in front of a web cam.
> I don't want to see P2P implemented so conservatively in browsers that
> it's restricted to webcams and pre-recorded audio-video files.
> The spec mentions a "signaling channel" but that channel is coordinated
> "via the server, e.g. using XMLHttpRequest.".
> -Charles
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