[R-C] DCCP as an RTCWEB option (Re: Modular Congestion Control in rtcweb)

[Timothy B. Terriberry]

Randell Jesup wrote:
> It is an interesting idea which had not really been considered before,
> and would obviously solve the congestion issue between rtcweb data
> channels and media channels.

Keep in mind that one of the arguments against the shim approach to 
multiple RTP sessions on a single port was that it would break all 
existing traffic management software at gateways, firewalls, etc., that 
tries to inspect RTP/SRTP packets. The same would be true of 
RTP/SCTP/DTLS/UDP, except moreso (as you would no longer even be able to 
get at the fields that are normally unencrypted in an SRTP session, 
regardless of your ability to upgrade software on the gateways and 
firewalls).

To me this is at least as big a disadvantage as the efficiency argument, 
though adding that many more bytes of overhead to on the order of 100 
packets a second is already a pretty big disadvantage.