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def main(request, response):
tag = request.GET.first(b"tag", None)
match = request.headers.get(b"If-None-Match", None)
date = request.GET.first(b"date", b"")
modified = request.headers.get(b"If-Modified-Since", None)
cors = request.GET.first(b"cors", None)
if request.method == u"OPTIONS":
response.headers.set(b"Access-Control-Allow-Origin", b"*")
response.headers.set(b"Access-Control-Allow-Headers", b"IF-NONE-MATCH")
return b""
if tag:
response.headers.set(b"ETag", b'"%s"' % tag)
elif date:
response.headers.set(b"Last-Modified", date)
if cors:
response.headers.set(b"Access-Control-Allow-Origin", b"*")
if ((match is not None and match == tag) or
(modified is not None and modified == date)):
response.status = (304, b"SUPERCOOL")
return b""
else:
if not cors:
response.headers.set(b"Access-Control-Allow-Origin", b"*")
response.headers.set(b"Content-Type", b"text/plain")
return b"MAYBE NOT"