File: access-control-sandboxed-iframe-allow-origin-null.htm

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<!DOCTYPE html>
<html>
  <head>
    <title>Tests that sandboxed iframe has CORS XHR access to a server that accepts null domain</title>
    <script src="/resources/testharness.js"></script>
    <script src="/resources/testharnessreport.js"></script>
    <script src="/common/get-host-info.sub.js"></script>
  </head>
  <body>
    <script type="text/javascript">
async_test((test) => {
  window.addEventListener("message", test.step_func((evt) => {
    if (evt.data === "ready") {
      document.getElementById("frame").contentWindow.postMessage(
          get_host_info().HTTP_ORIGIN +
          "/xhr/resources/pass.txt?pipe=" +
          "header(Cache-Control,no-store)|" +
          "header(Content-Type,text/plain)|" +
          "header(Access-Control-Allow-Credentials,true)|" +
          "header(Access-Control-Allow-External,true)|" +
          "header(Access-Control-Allow-Origin,null)", "*");
    } else {
      assert_equals(evt.data.trim(), "PASS");
      test.done();
    }
  }), false);
});
    </script>
    <iframe id="frame" sandbox="allow-scripts" src="/xhr/resources/access-control-sandboxed-iframe.html">
    </iframe>
  </body>
</html>