Send single byte payloads via UDP on a LAN.

client.py

#!/usr/bin/env python3
'''Sends a single byte payload to the specified IP address on UDP port 8080.

Should be run on the Intel Edison.
'''
import socket

# TARGET IP address should be that of the device you're running `server.py`.
TARGET  = ('192.168.1.1', 8080)
MESSAGE = b'0'

def main():
    with socket.socket(socket.AF_INET, socket.SOCK_DGRAM) as sock:
        while True:
            sock.sendto(MESSAGE, TARGET)

if __name__ == '__main__':
    main()

server.py

#!/usr/bin/env python3
'''Listens for a single byte payload on UDP port 8080 on all interfaces.

Should be run on any device != Intel Edison.
'''
import socket

HOST = ('0.0.0.0', 8080)

def main():
    with socket.socket(socket.AF_INET, socket.SOCK_DGRAM) as sock:
        sock.bind(HOST)
        while True:
            data, addr = sock.recvfrom(1)
            print('Received {} from {}'.format(data.decode(), addr))

if __name__ == '__main__':
    main()