code_challenge

# -*- coding: UTF-8 -*-
import sys
import socket
import sys
import socket
import time

def stringToDict(data):
	arr = data.split('\r\n')
	dick = {}
	for i in range(1, len(arr)-1):
		dick[arr[i][0:arr[i].index(':')]] = arr[i][arr[i].index(':')+2:]

	return dick

def main():
	ip = '188.166.63.53 33443'
	port = 33443
	
	#create udp connection
	udp_sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
	udp_sock.bind(('', port))

	hello = 'HELLO REQUEST SEP/1.0\r\nUSER-AGENT: a\r\nTIME: %s\r\n' %((int(time.time())+120))
	udp_sock.sendto(hello, (ip, port))

	data = udp_sock.recv(1024)
	mapped = stringToDict(data)
	ID = mapped['ID']

	echo = 'ECHO REQUEST SEP/1.0\r\nUSER-AGENT: a\r\nTIME: %s\r\nID: %s\r\nECHO-LENGTH: %s\r\nECHO: 00000000' %((int(time.time())+120), ID, 15768)
	udp_sock.sendto(echo, (ip, port))
	data = udp_sock.recv(12000)

	print data


if __name__ == '__main__':
	try:
		main()
	except KeyboardInterrupt:
		sys.exit(1)