Find Lantronix XPort devices with a python script.

find_xport.py

import socket
import numpy
numpy.set_printoptions(formatter={'int':lambda x:hex(int(x))})

def find_lantronix(timeout=4):
    """
      Broadcasts to find xport devices on the current subnet.
    """

    # Set up the socket
    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    s.bind(('', 0))
    s.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)

    send_data = numpy.array([0x0, 0x0, 0x0, 0xF8], dtype=numpy.uint8)
    s.sendto(send_data, ('<broadcast>', 30718))
    s.settimeout(timeout)

    found_devices = {}
    while 1:
        try:
            dat, (ip, _) = s.recvfrom(4096)
            num_array = numpy.fromstring(dat, dtype=numpy.uint8)
            if len(num_array) != 124:
                print "Wrong device responding?"
                continue
            found_devices[ip] = dict(data=num_array) 
        except socket.timeout:
            break

    return found_devices 


print find_lantronix()

Hi Michael,

tank you for this code. It works great for finding xport devices, but only when the computer is connected to the net via cable, but it is not working if you are connected via WIFI. Is it possible to broadcasts over WIFI (the computer is connected to the network via WIFI and xport is connected via cable)?

Thank you and kind regards,
Toni

@tonipetrovic It's been a very long time since I've done this, so I'm not sure I can be too much help. But that sounds like more of an issue with how broadcast/UDF packets are forwarded between your two network types/other subnets. In other words, it may be rather an issue with how your network is configured. Good luck!