On Wed, 11 Mar 2009 11:13:16 +0200
Brent Clark <brentgclarkl...@gmail.com> wrote:
> I got this question to ask, and I was hoping the TCP/IP gurus would be
> able to help me understand this.
> K you know how with traffic shapping you can control only the traffic
> leaving you, how it is that torrent clients say they can control the
> download as well as the upload. I would think the client can only
> control the upload.
If the client reads from a TCP socket slower than the data is coming-in,
the buffers fill-up and the sliding-window algorithm in TCP causes the
sending side to slow down.
A traffic shaper could efficiently regulate downloads by proxying TCP.
And even though PF does some limited TCP proxying, unfortunately
dummynet and altq work at the IP level.
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