[R-C] Timely reaction time (Re: Comments on draft-alvestrand-rtcweb-congestion-01)

[Matt Mathis]

Let me second Harald's point by making an observation:   Your
(Michael's) solution has two subtasks: proper real time Congestion
Control for a single flow and multiplexing multiple playload types
onto a single flow.

The short term agenda here is the first problem: proper real time CC
for a single flow.

There is (probably) 100% agreement that we need some solution to the
2nd problem (or at least some similar problem).

But most of us do not want to put solving the second problem in the
critical path for the first problem, which is essentially orthogonal.

Note that the first problem might be concurrently solved and tested
for both SRTP and RRTCC, since we all believe the algorithm might be
implemented in either.

Does this make sense?

Thanks,
--MM--
The best way to predict the future is to create it.  - Alan Kay



On Mon, Apr 16, 2012 at 7:25 AM, Harald Alvestrand <harald at alvestrand.no> wrote:
> On 04/16/2012 03:48 PM, Michael Welzl wrote:
>
> I'm not sure my concerns about what is now called RRTCC are answered, but I
> think that we pretty much agree design-wise anyway. I'm now just a bit
> confused by the mix of 1) arguments against my suggestion to use only one
> congestion control instance for everything (ideally by making all RTCweb
> flows streams of one SCTP association), 2) some statements saying "yeah,
> this was the plan anyway".
>
> Maybe it's because I don't know RTCweb well enough yet, or don't understand
> who does what and who plans what... and maybe it's also because I proposed
> too many intertwined things in one go (all-over-SCTP *and* one congestion
> control instance for everything). Whatever. Anyway, I think it's an
> interesting discussion  :-)
>
> Very possible - my take from RTCWEB side is that media over anything but
> SRTP is just not going to happen this year (or perhaps any year), for
> reasons having to do with installed base of a lot of stuff, while having a
> bridge for congestion control information to flow between the "media side"
> and the "sctp side" can be implemented in each implementation, and is such a
> no-brainer than everyone agrees we should Just Do It.
>
> So since your note was "all in one go", it's no surprise that people seem to
> be saying yes AND no....
>
>                   Harald
>
>
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