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def main(request, response):
if b'nested' in request.GET:
return (
[(b'Content-Type', b'text/html')],
b'failed: nested frame was not intercepted by the service worker'
)
return ([(b'Content-Type', b'text/html')], b"""
<!doctype html>
<html>
<body>
<script>
function nestedLoaded() {
parent.postMessage({ type: 'NESTED_LOADED' }, '*');
}
let popup = window.open('?nested=true');
popup.onload = nestedLoaded;
addEventListener('unload', evt => {
popup.close();
}, { once: true });
// Helper routine to make it slightly easier for our parent to find
// the nested popup window.
function nested() {
return popup;
}
</script>
</body>
</html>
""")