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const RESPONSE_SUCCESS = `
<html>
<body>
send message, downgraded
<script type="application/javascript">
let scheme = document.location.protocol;
window.opener.postMessage({result: 'downgraded', scheme: scheme}, '*');
</script>
</body>
</html>`;
const RESPONSE_UNEXPECTED = `
<html>
<body>
send message, error
<script type="application/javascript">
let scheme = document.location.protocol;
window.opener.postMessage({result: 'Error', scheme: scheme}, '*');
</script>
</body>
</html>`;
function handleRequest(request, response) {
// avoid confusing cache behaviors
response.setHeader("Cache-Control", "no-cache", false);
// if the received request is not http send an error
if (request.scheme === "http") {
response.write(RESPONSE_SUCCESS);
return;
}
// we should never get here; just in case, return something unexpected
response.write(RESPONSE_UNEXPECTED);
}