Re: Screensharing: Bootstrapping Collaboration between Capturer and Capturee

getDisplayMedia is a layering violation.

> I mean A and B. Attempting to limit communication between two cooperating
entities to a set of standard actions is a layering violation.

That a proposal to allow communication between two entities through a set
of standard actions, is a violation because it *limits* communication seems
like a fallacy. Standardizing communication that works outside of silos
seems good.


On Thu, Jun 17, 2021 at 9:09 AM Harald Alvestrand <harald@alvestrand.no>
wrote:

>
> On 6/17/21 4:22 AM, Jan-Ivar Bruaroey wrote:
>
> > Embedding the specific UA controls in the browser (proposal A and B) is
> a layering violation.
>
> @Harald (I think you mean B?)
>
>
> I mean A and B. Attempting to limit communication between two cooperating
> entities to a set of standard actions is a layering violation.
>
> (The MediaSession proposal is at the same layer as proposal A and B, so
> incorporating these ideas into a revised version of MediaSession would not
> be a layer violation.)
>
>
> In any case, the explainer
> <https://github.com/w3c/mediacapture-screen-share/blob/gh-pages/explainer.md#what-is-it-whats-it-for>
> seems quite clear that the primary use case of getDisplayMedia is
> presentations in video conferences. That's why browsers push captured
> windows to the front
> <https://github.com/w3c/mediacapture-screen-share/issues/138>, among
> other things. I'm not taking a position on Youenn's proposal, only noting
> that having user agents involved at a high level here does not seem out of
> bounds: Two sites are involved, and user agents stepping in to mediate to
> protect users seems fine and appropriate to me, if they wish to do that.
>
>
> Two sites are involved. These two sites may be cooperating, competing, or
> have any other relationship.
>
> In the case of deeply cooperating sites, the UA's business is to get out
> of the way and let them cooperate.
>
> UA controls are appropriate only for the case where both sites want to
> conform to some common set of mediation mechanisms (such as MediaSession) -
> the IETF tried that with the CLUE WG (
> https://datatracker.ietf.org/wg/clue/about/) - it failed, while the
> effort that put tools in the hands of the user to build the systems they
> needed (RTCWEB) succeeded.
>
>
>
>

-- 
.: Jan-Ivar :.