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"use strict";
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 behaviour
response.setHeader("Cache-Control", "no-cache", false);
response.setHeader("Content-Type", "text/html", false);
let query = request.queryString;
// If the scheme is not https then we rather fall through and display unexpected content
if (query.scheme === "https") {
// We should never arrive here, just in case send something unexpected
response.write(RESPONSE_UNEXPECTED);
return;
}
// Use a busy loop and slow down the response by one second
const delayMs = 1000;
const start = Date.now();
while (Date.now() < start + delayMs) {
continue;
}
// We should arrive here when the redirection was downraded successful
response.write(RESPONSE_SUCCESS);
}