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C/C++ Users Group Library 1996 July
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C-C++ Users Group Library July 1996.iso
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438_01
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stelnet.bug
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1994-12-19
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Addendum for the stelnet 1.00 documentation
stelnet seems to crash randomly on one system it has been beta tested on.
It does it quite rarely, apparently randomly, and only while transferring
8-bit data from the telnet port to the serial port. It doesn't break
anything, just halts. The carrier detect watchdog of FOSSIL drivers seems
to be able to reboot the machine.
8-bit clean mode and such don't seem to have any effect on the crashes. And
transferring 7-bit data doesn't seem to crash. So in normal use (using
stelnet as a terminal to e.g. a Unix system), about the only thing this
affects is file transfers.
If you're telnetting into a Unix system, running the following C program for
about five to fifteen minutes (on a 14400 bps or slower link) should cause
the crash.
*** Begin
#include <stdio.h>
int main()
{
int i;
while (1) for (i=0;i<256;i++) putchar(i);
exit(0);
}
*** End
I couldn't repeat this on my own systems (a 486DX-50 with a
NE-1000-compatible network card running Linux, and a 486DX2-80 with a
NE2000-compatible network card running stelnet, with a null-modem cable
between them), though. Thus I can't do much to fix it, at least not without
additional information. I'm not even sure if it's stelnet or some driver
that crashes...
I would appreciate reports from systems where this bug occurs or doesn't
occur.
The author,
riku.saikkonen@pcb.compart.fi