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<!DOCTYPE html>
<script src="utils.js"></script>
<body>
<script>
function getFrameType(service_worker, url) {
return new Promise((resolve, reject) => {
const channel = new MessageChannel();
channel.port1.onmessage = e => {
resolve(e.data);
};
service_worker.postMessage({port:channel.port2, url:url},
[channel.port2]);
});
}
(async function() {
await navigator.serviceWorker.register('serviceWorker-frameType.js');
const registration = await navigator.serviceWorker.ready;
const service_worker = registration.active;
const [frame_type_key, frame_type_ack_key] = parseKeylist();
const frame_type = await getFrameType(service_worker, location.href);
writeValueToServer(frame_type_key, frame_type);
// Wait for ACK, so we know that the outer page has read the last value from
// the `serviceWorker.frameType` stash and we can write to it again.
await nextValueFromServer(frame_type_ack_key);
const iframe = document.createElement('iframe');
iframe.src = generateURL("serviceWorker-frameType-nested.html",
[frame_type_key]);
document.body.append(iframe);
})();
</script>
</body>
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