#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Send broadcast packets on port UDP_PORT to be easily detected on the network
#
import time
import json
import socket
#from socket import *

UDP_IP = ''
UDP_PORT = 4242

sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.bind((UDP_IP, 0))
sock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)

while True:
    ip_addresses = [l for l in ([ip for ip in socket.gethostbyname_ex(socket.gethostname())[2] if not ip.startswith("127.")][:1], [[(s.connect(('8.8.8.8', 80)), s.getsockname()[0], s.close()) for s in [socket.socket(socket.AF_INET, socket.SOCK_DGRAM)]][0][1]]) if l][0][0]
    hostname = socket.gethostname()
    data = json.dumps({'id': "robot_detected", 'ip_addresses': ip_addresses, 'hostname': hostname})
    sock.sendto(data, ('<broadcast>', UDP_PORT))
    time.sleep(2)
    #[l for l in ([ip for ip in socket.gethostbyname_ex(socket.gethostname())[2] if not ip.startswith("127.")][:1], [[(s.connect(('8.8.8.8', 80)), s.getsockname()[0], s.close()) for s in [socket.socket(socket.AF_INET, socket.SOCK_DGRAM)]][0][1]]) if l][0][0]