#!/usr/bin/env python3
import os
import sys
purpose = os.environ.get('HTTP_PURPOSE', '')
sys.stdout.write(
'Cache-Control: max-age=3600\r\n'
'Content-Type: text/html\r\n\r\n'
'\n'
'\n'
'\n'
'\n'
''
)
if purpose == 'prefetch':
sys.stdout.write('PASS')
else:
sys.stdout.write('FAIL')
sys.stdout.write(
'
\n'
'\n'
'\n'
)