Raspberry Pi: how to send serial command using Ethernet?

Question

I have a python script, which will start cherrypy webserver when run in the terminal. In the script, i use pyserial by importing serial, then i open up the port /dev/ttyAMA0 and i can send any serial commands.

 @cherrypy.expose
 def login (self, **data):
    passcode = data.get("passcode", None)
    print "logging in using passcode %s"%passcode ,type(passcode)

    import serial
    import time
    #open connection
    serialport=serial.Serial ("/dev/ttyAMA0", 9600, timeout=0.5)
    #write in user sign in code
    serialport.write("\x03LI%s\x0D"%passcode)
    #get reply 
    reply=serialport.readlines(1)
    print reply, type(reply)

However, since there is an Ethernet port and i can send the serial command to that similar device using Netcat, how can i let this script to send commands through the ethernet port instead of the serial port? What should i change?

sorry but i'm really clueless on how to do this. i've searched through google and i can't find answers. :(

Solution

What about using the socat command? Using the following command line you can make /dev/ttyAMA0 accessible via eth 127.0.0.1:5555:

socat PTY,link=/dev/ttyAMA0 TCP:127.0.0.1:5555