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<!DOCTYPE html>
<title>ok</title>
<script>
window.onmessage = function(e) {
var id = e.data.id;
try {
var name = 'checkallowed';
self.caches.open(name).then(function (cache) {
self.caches.delete(name);
window.parent.postMessage({id: id, result: 'allowed'}, '*');
}).catch(function(e) {
window.parent.postMessage({id: id, result: 'denied', name: e.name, message: e.message}, '*');
});
} catch (e) {
window.parent.postMessage({id: id, result: 'unexpecteddenied', name: e.name, message: e.message}, '*');
}
};
</script>