From: Tony Arcieri Date: 2007-11-01T06:39:30+09:00 Subject: DistribuStream ------=_Part_5396_3120184.1193866647721 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline DistribuStream is an open peer-to-peer communications system which aims to become the successor to BitTorrent. You can read about it at http://distribustream.org Unlike BitTorrent, DistribuStream facilitates streaming progressive downloads, making it an open alternative to proprietary protocols like Joost. DistribuStream is written on top of the Ruby/EventMachine library which, at least on Linux, allows it to scale to thousands of concurrent connections. It was developed collaboratively by ClickCaster, Inc. and the University of Colorado Computer Science program. The underlying protocol (Peer Distributed Transfer Protocol or PDTP) has received an IANA port assignment of 6086. All source code is available under the GNU General Public License v3. We don't plan a Ruby-licensed version at this time, sorry. The protocol is philosophically different from BitTorrent, which relies on emergent, swarm-like behavior for traffic scheduling. All client/server and peer-to-peer communications can be modeled as simple state machines. The onus of traffic scheduling is placed entirely on the server. Client/server communication is accomplished with a lightweight JSON asynchronous messaging format (presently running over TCP). Peer-to-peer communication is accomplished with HTTP/1.1 using the Mongrel HTTP server. The entire protocol behaves as an ad hoc HTTP caching proxy network. If you'd like to check it out, it's available as a RubyGem: gem install distribustream Check out the README file for help getting started: http://distribustream.rubyforge.org/svn/trunk/README An example configuration file is available here: http://distribustream.rubyforge.org/svn/trunk/conf/example.yml Enjoy! -- Tony Arcieri ClickCaster, Inc. tony@clickcaster.com ------=_Part_5396_3120184.1193866647721--