On Sat, 30 May 2020 12:32, hw@... wrote:
Hi,
I'm looking for a good way to create a constant data stream that will occupy a
bandwidth of about 2--5Mbit/sec between two remote hosts over the internet. I
have full access to the hosts involved.
My first attempt to use scp to copy data from /dev/null on host A to /dev/null
on host B, but scp says '/dev/null: not a regular file'. If something like
that would work, I would be able to limit the bandwidth of this transfer in
the router(s) involved so that it won't occupy all the bandwidth.
Of course, it would be better if I could limit the bandwidth on the sending
side rather than dropping packages. I could probably write some program to do
that, but since I have never programmed such a kind of network application, it
would be rather time consuming. Maybe there's already a kind of tool around
that can do this.
I need this to work around whatever settings my ISP has made 3 days ago that
block my VPN connection so that I effectively can't reasonably work anymore.
I do know what the problem with the connection is and that occupying some
bandwidth would unblock the VPN; only there doesn't seem to be anything else I
could about it.
Hmm, last time I had such issues (~10 years ago), I had a ssh-server on
one side running, and used scp from the other side:
scp -l [banwidth in Kbit/sec] /dev/zero [user@remote host]:/dev/null
For me at the time 150 kbit/sec was enough to keep my channel open.
Others used netcat (nc) in a script to get the similar results
(feeding it "lines" at a certain rate to limit the traffic)
Have a nice weekend.
- Yamaban
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