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import random
import time
def main(request, response):
# no-cache itself to ensure the user agent finds a new version for each update.
headers = [(b'Cache-Control', b'no-cache, must-revalidate'),
(b'Pragma', b'no-cache')]
content_type = b''
extra_body = u''
content_type = b'application/javascript'
headers.append((b'Content-Type', content_type))
extra_body = u"self.onfetch = (event) => { event.respondWith(fetch(event.request)); };"
# Return a different script for each access.
return headers, u'/* %s %s */ %s' % (time.time(), random.random(), extra_body)
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