Date: Tue, 18 Feb 1997 21:36:50 +0100 (MET) From: Luigi Rizzo <luigi@labinfo.iet.unipi.it> To: end2end-interest@ISI.EDU Cc: hackers@freebsd.org Subject: A Reliable Multicast protocol (RMDP) Message-ID: <199702182036.VAA07655@labinfo.iet.unipi.it>
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If someone is interested, a very experimental version of our (Lorenzo Vicisano and myself) Reliable Multicast data Distribution Protocol (RMDP) is available at http://www.iet.unipi.it/~luigi/rmdp-alpha.tgz It includes sources for both a client and a server. It works much like ftp, over multicast or unicast UDP. I have a server (rmdpd) running at my site, mirroring a subset of my web page, so you can try it by asking rmdp [-u | -t TTL ] [-o outfile] rmdp://labinfo2.iet.unipi.it/index.html where -u is used for unicast UDP, and -t is used to set the TTL for the multicast request. This prototype still does not implement congestion control, which is in the works, and is independent of rmdp anyways. Even as it is now (I don't expect more than a few users), it is not a worse net-citizien than "vic" and friends, since it is rate-limited at the sender (defaults at 64Kbit/s) and files are not as long as video stream... Feedback welcome. Cheers Luigi -----------------------------+-------------------------------------- Luigi Rizzo | Dip. di Ingegneria dell'Informazione email: luigi@iet.unipi.it | Universita' di Pisa tel: +39-50-568533 | via Diotisalvi 2, 56126 PISA (Italy) fax: +39-50-568522 | http://www.iet.unipi.it/~luigi/ _____________________________|______________________________________
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