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def main(request, response):
response.headers.set(b'Cache-Control', b'no-store')
response.headers.set(b'Access-Control-Allow-Origin',
request.headers.get(b'origin'))
headers = b'x-custom-s,x-custom-test,x-custom-u,x-custom-ua,x-custom-v'
if request.method == u'OPTIONS':
response.headers.set(b'Access-Control-Max-Age', b'0')
response.headers.set(b'Access-Control-Allow-Headers', headers)
# Access-Control-Request-Headers should be sorted.
if headers != request.headers.get(b'Access-Control-Request-Headers'):
response.status = 400
else:
if request.headers.get(b'x-custom-s'):
response.content = b'PASS'
else:
response.status = 400
response.content = b'FAIL'