per-process bandwidth limiting?

[Martin F Krafft <madduck@madduck.net>]

hi,
since potato's rsync seems not to support the --bwlimit flag, and i am
looking for a general solution anyway, let me ask you this:

do you know of a tool that let's you limit the bandwidth in and out of
a process? i envision something like nice (without renice though), so
that you'd call something like

  bwlimit 4k /usr/local/bin/myprocess

and all myprocess would ever get was 4kbps of network bandwidth. i
*don't* want to use the kernel traffic shaper, and i a per-host
configuration is not ideal either. is there such a tool?

if not, i might well have to write it... *but*... is it at all
possible? it would have to intercept and relay the bsd socket
functions, which might not be an easy task.

martin;              (greetings from the heart of the sun.)
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