#!/usr/bin/python

import sys
import time
import urllib2
import keepalive

keepalive.DEBUG = 1
keepalive_handler = keepalive.HTTPHandler()
opener = urllib2.build_opener(keepalive_handler)
urllib2.install_opener(opener)

try:
    url = sys.argv[1]
except IndexError:
    sys.exit('usage: %s <url>' % sys.argv[0])

fo = urllib2.urlopen(url)
data1 = fo.read()
fo.close()

i = 60
while i > 0:
    sys.stdout.write('\r%2i' % i)
    sys.stdout.flush()
    time.sleep(1)
    i -= 1
print

fo = urllib2.urlopen(url)
data2 = fo.read()
fo.close()

if data1 == data2:
    print 'data are identical'
else:
    print 'DATA DIFFER'