file_triggeringprincipal_subframe_nav.html

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<!DOCTYPE HTML>

<html>

<head><meta charset="utf-8"></head>

<body onload="checkResults()">

<b>Sub Frame 2 Navigated</b><br/>

<script type='application/javascript'>

  function checkResults() {

    // query the uri of the loadingPrincipal and the TriggeringPrincipal and pass

    // that information on to the parent for verification.

    var channel = SpecialPowers.wrap(window).docShell.currentDocumentChannel;

    var triggeringPrincipalURI = channel.loadInfo.triggeringPrincipal.asciiSpec;

    var loadingPrincipalURI = channel.loadInfo.loadingPrincipal.asciiSpec;

    var referrerURI = document.referrer;

    window.parent.parent.postMessage({triggeringPrincipalURI,

                                    loadingPrincipalURI,

                                    referrerURI}, "*");

</script>

</body>

</html>