<!DOCTYPE html>
<html>
<body>
<p>Posting form...</p>
<form action="http://127.0.0.1:8000/security/XFrameOptions/resources/x-frame-options-parent-same-origin-allow.cgi" method="POST">
    <input type="hidden" name="notifyDone" value="1">
    <input type="submit" name="Submit">
</form>
<script>
document.forms[0].submit();
</script>
</body>
</html>