postMessage_origin_helper.xhtml

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<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

  <title>postMessage origin-testing helper page</title>

  <script type="application/javascript"><![CDATA[

function receiveMessage(evt)

  if (event.data === "PING") {

    window.parent.postMessage("PONG", "*");

    return;

  var response = "PASS";

  if (evt.origin !== "http://mochi.test:8888")

    response += " wrong-origin(" + evt.origin + ")";

  if (evt.source !== window.parent)

    response += " wrong-source";

  if (evt.data !== "PASS")

    response += " wrong-data(" + evt.data + ")";

  window.parent.postMessage(response, "http://mochi.test:8888");

window.addEventListener("message", receiveMessage);

// Aids for identifying origins

function setup()

  var target = document.getElementById("location");

  target.textContent = location.hostname + ":" + (location.port || 80);

window.addEventListener("load", setup);

  ]]></script>

</head>

<body>

<h1 id="location">No location!</h1>

</body>

</html>