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<!DOCTYPE HTML>
<script>
let params = new URLSearchParams(document.location.search.substring(1));
let name = params.get('name');
try {
let worker = new SharedWorker('sharedWorker_sharedWorker.js',
{ name });
worker.port.addEventListener('message', evt => {
parent.postMessage( { name, result: 'allowed' }, '*');
}, { once: true });
worker.port.start();
worker.port.postMessage('ping');
} catch(e) {
parent.postMessage({ name, result: 'blocked' }, '*');
}
</script>