Jan, Can you tell us why BitTorrent, Inc. is not opening this protocol? At this point UT is like Skype, a proprietary piece that I won't touch it with a 10 foot pole.
J On Dec 1, 2008, at 3:18 PM, Jan Brittenson wrote: > Serguei Osokine wrote: >> On Monday, December 01, 2008 David Barrett wrote: >>> Saw uTorrent switched to UDP: >>> >>> http://www.theregister.co.uk/2008/12/01/ >>> richard_bennett_utorrent_udp/ >> >> Is it just me, or this article is really unnecessarily alarmist? >> Richard Bennett describes the situation as if there is no congestion >> control in the UDP file transfer protocol used by uTorrent, which >> I find a bit hard to believe. > There is congestion control. And the idea with using their custom > transport is that its congestion controller yields to TCP and > uncontrolled UDP (VoIP etc). Ease of NAT traversal is more or less > a freebie, although a nice one. Unfortunately I have a disclosure > agreement with BT so can't share more than what you could find out > with a managed switch, Ethereal and a bit of skilled sleuthing. But > since I'm no longer in their employ, I can at least save you the > effort. It's very much congestion controlled. >> >> Is this really the case? I cannot imagine how the data transfer >> protocol without any congestion control can possibly exist > Of course not. That would be asinine. > > I started the code to do r-v NAT traversal in uT. Don't know if > they use this or started over with a different scheme. NAT traversal > is pretty easy, unlike UDP congestion control over the public > Internet, > which falls in the category of rocket science IMO. STUN isn't used, > but could be employed to optimize r-v selection and skipping > connections > that can't succeed. > > _______________________________________________ > p2p-hackers mailing list > p2p-hackers@lists.zooko.com > http://lists.zooko.com/mailman/listinfo/p2p-hackers _______________________________________________ p2p-hackers mailing list p2p-hackers@lists.zooko.com http://lists.zooko.com/mailman/listinfo/p2p-hackers
