[dirt simple comms] test for https://gist.github.com/TylerOderkirk/c8510292cc86648074b5

notes.txt

# create a pty and attach it to python app's stdin/out
socat -ddd -ddd PTY,raw,echo=0 "EXEC:'python /home/tz/proj/dsc/stdinout_tofrom_named_pipe.py that',pty,raw,echo=0"

# create a second pty and attach it to python app's stdin/out
socat -ddd -ddd PTY,raw,echo=0 "EXEC:'python /home/tz/proj/dsc/stdinout_tofrom_named_pipe.py other',pty,raw,echo=0"

# write some binary data into the first pty (where '7' is what's printed by socat)
cat /bin/true > /dev/pts/7

# read some binary data from the second pty (where '11' is what's printed by socat)
cat /dev/pts/11 > /tmp/out

# kill above cat(1) process (simply use ctrl-c for SIGINT)

# ensure binary data was transmitted without error
md5sum /bin/true /tmp/out