[Bacnet-developers] Issue with mstpcap.exe when using named pipes

[Jeff M. <jef...@gm...>]

For some reason, I've lost my named pipe capture capability recently in
Win32 (running on Win7 64 bit).

First of all, standard captures without the named pipe argument still work
great for me.  When I add the third argument, things break.

I execute as below:

C:\mstpcap>mstpcap com7 19200 \\.\pipe\wireshark
Adjusted interface name to \\.\COM7
RS485 Interface: \\.\COM7
mstpcap: Using \\.\COM7 for capture at 19200 bps.
mstpcap: Creating Named Pipe "\\.\pipe\wireshark"

I can see the RX light on my USB--RS485 adapter flicker as usual when this
opens the connection to the serial port, but after 5-10 seconds, the light
turns off (like when I end a capture).  In the past, when the named pipe
has worked, I've noticed that mstpcap has created a .cap file in addition
to streaming packets to the named pipe.  With my issue, no .cap file is
being created.  In case it matters, I have tried at multiple baud rates,
and the serial port seems to close faster at higher baud rates (possibly
because we reach 100 packets faster?).

I just tried rebuilding mstpcap in 0.8.2 using MinGW, and it's exhibiting
the same symptoms.

Has anyone else experienced this issue?  If so, how did you fix it?

Thanks in advance for any help you can provide.

Best Regards,
Jeff