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[20060725] Multicast TFTP client and server
When downloading a file from a server to a client machine, the file is split into packets and sent one by one, with the client acknowledging every packet. When distributing one file to many machines, this can either be done as many single transfers (as g4u currently does, using FTP :), or to use a protocol that supports multicasting, to send the file only once from the server, and have all clients stand at attention, and reading the packets that the server sends, and possibly detecting and requesting any dropped packets. One such network protocol for the latter is the multicast trivial file transport protocol from RFC 2090.

Jared McNeill has worked on multicast TFTP support for some time, and after extending NetBSD's tftp(1) command to act as multicast TFTP client last week, he has also written a corresponding server now. See his mail to tech-net for more information, or have a look at Jared's multicast-tftp-server page directly.

Now let me finish my PhD thesis and then find a job where I can hack that into g4u... :-/

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