| def main(request, response): | |
| headers = [(b"Content-Type", b"text/html"), | |
| (b"Cross-Origin-Resource-Policy", request.GET[b'corp'])] | |
| return 200, headers, b"<body><h3>The iframe</h3><script>window.onmessage = () => { parent.postMessage('pong', '*'); }</script></body>" | |