[thespin]

I'll stick with CurveCP, thanks. It works, it has the added "perk" of encryption, and it's not tied to a single application, like uTP.

Then again, if you tie something into an application that hundreds of thousands of people already use, like uTP is tied into a popular bittorrent client, you can then claim "Hundreds of thousands of people are using it, to carry major traffic."

[batterseapower]

You may already know this, but uTP's congestion control algorithm is usable with vanilla TCP, where it is called LEDBAT (http://tools.ietf.org/html/draft-ietf-ledbat-congestion-01).

Of course, from the perspective of a Bittorrent client author it's much easier to implement TCP-over-UDP than to depend upon raw socket support / install a custom congestion control algorithm into the OSes TCP stack.

[thespin]

If there was a generic utpclient/utpserver pair of applications that I could use to proxy non-uTP applications, as there is with CCP, I'd try using uTP/LEDBAT. But to my knowledge, there isn't.

[JoachimSchipper]

(Note: see http://curvecp.org/decongestion.html for details. It looks interesting, but I haven't looked at it closely.)