[Twisted-Python] running local process to share serial port to many tcp clients

[Denis Barmenkov]

Hello!

Is there some example/tutorial, how top create twisted application for 
sharing unique resource?
I have some hardware module, which connects to Linux computer via serial 
port. 
Simple protocol also exists: after writing some data to device, it think 
;), then returns response.

And my question is: how can I write separate process, which acts as 
serial_device proxy?
And how to implement interaction between 
twisted.internet.protocol.Protocol's descendants and this device-sharing 
protocol? 

Thank you!

Regards,
Denis Barmenkov