From owner-freebsd-hackers Tue Jan 7 11:15:01 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.4/8.8.4) id LAA05298 for hackers-outgoing; Tue, 7 Jan 1997 11:15:01 -0800 (PST) Received: from labinfo.iet.unipi.it (labinfo.iet.unipi.it [131.114.9.5]) by freefall.freebsd.org (8.8.4/8.8.4) with SMTP id LAA05283 for ; Tue, 7 Jan 1997 11:14:46 -0800 (PST) Received: from localhost (luigi@localhost) by labinfo.iet.unipi.it (8.6.5/8.6.5) id TAA07646 for hackers@freebsd.org; Tue, 7 Jan 1997 19:31:16 +0100 From: Luigi Rizzo Message-Id: <199701071831.TAA07646@labinfo.iet.unipi.it> Subject: FEC techniques and a C implementation To: hackers@freebsd.org Date: Tue, 7 Jan 1997 19:31:16 +0100 (MET) X-Mailer: ELM [version 2.4 PL23] Content-Type: text Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk If someone is interested, I have written a C implementation of an erasure code which I believe to be reasonably flexible and efficient for use within TCP/UDP/IP-based protocols. Typical encoding/decoding speeds on a Pentium133 are in the 1..10 MB/s range depending on the actual parameters. This encoding can be used both to reduce the experienced loss rate on unicast/multicast communications, or to build reliable multicast applications (e.g. multi-FTP, parallel download of software, etc.) A brief description with pointers to the source code (very short) and a draft paper describing the implementation, its performance and possible applications is available at the following URL: http://www.iet.unipi.it/~luigi/fec.html Comments suggestions and bug reports are welcome. Also, suggestions for useful applications related to FreeBSD or its distribution are sought. 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/ _____________________________|______________________________________