Python Serial Port Extension

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So far i did not have problems on my 64 bit Linux machine. pySerial has
unit tests sending binary data through a loop-back adapter and those worked
fine.

1) do you have the correct baud rate and other port settings?

2) did you test the same on 32 bit linux?

3) is the c code using different port settings? pySerial sets the port up
for binary transmission but maybe there is still a difference. maybe "stty"
can be used to display the port settings while the C respectively the
Python program is running?

out of curiosity, is that Ethernet transport using RFC2217? (since
pySerial 2.5 will have support for that built in)

Note: the virtual serial device is an IOLAN DS1 that transports serial data
across Ethernet to a TruePort daemon. We've shown that the IOLAN-device +
TruePort-daemon are not the issue, since we are successful on Windows using
C or PySerial, and on Linux using C.