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def main(request, response):
"""
postMessage with Viewport-Width and Sec-Ch-Viewport-Height headers
"""
if b"sec-ch-viewport-width" in request.headers:
width = request.headers["sec-ch-viewport-width"]
else:
width = b"FAIL"
if b"sec-ch-viewport-height" in request.headers:
height = request.headers["sec-ch-viewport-height"]
else:
height = b"FAIL"
headers = [(b"Content-Type", b"text/html"),
(b"Access-Control-Allow-Origin", b"*")]
content = b'''
<script>
let parentOrOpener = window.opener || window.parent;
parentOrOpener.postMessage({ viewportWidth: '%s', viewportHeight: '%s' }, "*");
</script>
''' % (width, height)
return 200, headers, content