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<html>
<head>
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<title>Network Monitor test page</title>
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<body>
<p>Performing requests of various methods, with or without payload.</p>
<script type="text/javascript">
/* exported performRequest */
"use strict";
function performRequest(url, method, payload = null) {
const xhr = new XMLHttpRequest();
xhr.open(method, url, true);
xhr.setRequestHeader("Accept-Language", window.navigator.language);
xhr.setRequestHeader("X-Custom-Header-1", "Custom value");
xhr.setRequestHeader("X-Custom-Header-2", "8.8.8.8");
xhr.setRequestHeader("X-Custom-Header-3", "Mon, 3 Mar 2014 11:11:11 GMT");
xhr.send(payload);
}
</script>
</body>
</html>