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Date:      Tue, 23 Apr 2002 11:36:09 -0700
From:      Terry Lambert <tlambert2@mindspring.com>
To:        Nate Williams <nate@yogotech.com>
Cc:        Attila Nagy <bra@fsn.hu>, Tomas Svensson <tsn@gbdev.net>, hackers@FreeBSD.ORG
Subject:   Re: sendfile() in tftpd?
Message-ID:  <3CC5A999.A1A4D313@mindspring.com>
References:  <Pine.LNX.4.44.0204231521120.24266-100000@scribble.fsn.hu> <3CC59C44.13013A1E@mindspring.com> <15557.40442.852602.681416@caddis.yogotech.com>

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Nate Williams wrote:
> Going to TCP soon assumes that you have a lossless medium in order to
> transmit packets over.  If you're using a lossy medium, TFTP (and other
> UDP based protocols) can kick their butt because of TCP's assumption
> that packet loss is a function of congestion, which is often not the
> case in lossy mediums such as wirless. :(

THat's true.  I can't really think of an example of such a
medium, though, that you would still trust to netboot something.
8-).

Maybe 802.11b.  8-(.

The specific problem here is that "UDP is ``too slow''"; it looks
like a classic "Doctor, it hurts when I do this...".  8-) 8-).

-- Terry

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