<!DOCTYPE html>
<meta charset="utf-8">
<script>
var id = (new URLSearchParams(window.location.search)).get('id');
window.onmessage = m => {
navigator.mediaDevices.getUserMedia({video: true})
.then(() => 'ok')
.catch(e => e.name)
.then(r => {
window.parent.postMessage({id: id, result: r}, '*');
});
}
window.parent.postMessage({id: id, result: 'ready'}, '*');
</script>