http-redirecting-to-http-redirecting-to-http.https.sub.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /https-upgrades/tentative/http-redirecting-to-http-redirecting-to-http.https.sub.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html>

  <head>

    <title>HTTPS Upgrades: HTTP URL redirecting to HTTP URL redirecting to HTTP URL</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>

      setup({ single_test: true });

      // Loads an HTTP URL that redirects to an HTTP URL that redirects to

      // another HTTP URL. HTTPS upgrading should upgrade all URLs to HTTPS.

//

      // HTTPS upgrading doesn't change custom ports, so this will load

      // correctly if an HTTPS upgrade is performed, and will fail to load

      // otherwise (since the port will be wrong for http).

      var final_url = "http://{{host}}:{{ports[https][0]}}/https-upgrades/resources/pass.html";

      var middle_url = "http://{{host}}:{{ports[https][0]}}/fetch/api/resources/redirect.py?location=" + final_url;

      var url = new URL("http://{{host}}:{{ports[https][0]}}/fetch/api/resources/redirect.py?location=" + middle_url);

      window.onmessage = function(event) {

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

              done();

      win = window.open(url)

    </script>

  </body>

</html>