If anyone is interested, August last year I started a thread called "(Sid) Net
broken - Sending streams stall" about how sending files over my modem seemed
to stall after only a few 10s of kB were sent.
Well, after giving up for a while and using gpppon instead of KPPP as I would
prefer, I came back and had a look at how KPPP was calling pppd. It turns out
that even though "Hardware [CRTSCTS]" flow control was set in the KPPP config
it would call pppd with a "xonxoff" argument. This is due to a bad test in
connect.cpp near line 1273. It ought to read something like:
QString flowCtrl = gpppdata.flowcontrol();
if(flowCtrl != "None" && flowCtrl != i18n("None")) {
if(flowCtrl == "CRTSCTS" || flowCtrl == i18n("Hardware [CRTSCTS]"))
command += " crtscts";
else
command += " xonxoff";
}
Of course, my poor modem being swamped with outgoing data faster than it could
send it due to non-existent flow control was the reason I was getting these
symptoms. Recompiling kdenetwork source with the above change seems to have
fixed the problem.
Just FYI,
Brendon Higgins