[Cake] [rmcat] [rtcweb] Catching up on diffserv markings

[Jonathan Morton]

> On 22 Oct, 2015, at 22:54, Justin Uberti <juberti at google.com> wrote:
> 
> At present I'm not aware of any widely-deployed OS where an app can read the received ECN markings. 

I have personally verified that this is possible (for UDP) on Linux - we were investigating the feasibility of adding ECN to uTP (ie. BitTorrent).  The code looks horrid, but what raw sockets code doesn’t?

 - Jonathan Morton