#Code by
#Networking + security

from utils import *
import time
import socket
import csv
import sys


port = 53;

with open("urllist.csv") as f:
    url = [line.rstrip() for line in f]

with open("dnslist.csv") as t:
    host = [line.rstrip() for line in t]

for x in url:
    for y in host:
        #print(x)
        #print(y)

        w = create_DNS_query(x)
        #print(w)
        s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
        s.sendto(w, (host[0], port))
        message,adress = s.recvfrom(1024)
        #print (message)
        info = decode_dns_message(message)
        print (info)

        #tcp = socket.socket(socket.AF_INET, socket.SOCK_STREAM )
        #start = time.time()
        #tcp.connect((host[0],80))
        #print ('time taken ', time.time() - start ,' seconds')


        s.close()


####establish connection with websever, not dns here - using tcp socket
#null is no response from server, include timeout catch as well