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<!doctype html>
<html>
  <head>
    <title>XMLHttpRequest: send() - "Basic" authenticated request using setRequestHeader() when there is an existing session</title>
    <script src="/resources/testharness.js"></script>
    <script src="/resources/testharnessreport.js"></script>
    <script src="/common/utils.js"></script>
    <!-- These spec references do not make much sense simply because the spec doesn't say very much about this.. -->
    <link rel="help" href="https://xhr.spec.whatwg.org/#the-setrequestheader()-method" data-tested-assertations="following::ol[1]/li[6]" />
    <link rel="help" href="https://xhr.spec.whatwg.org/#the-send()-method" data-tested-assertations="following::code[contains(@title,'http-authorization')]/.." />
  </head>
  <body>
    <div id="log"></div>
    <script>
      var test = async_test()
      test.step(function() {
        var client = new XMLHttpRequest(),
          urlstart = location.host + location.pathname.replace(/\/[^\/]*$/, '/')
        // Initial request: no information is known to the UA about whether resources/auth4/auth.py requires authentication,
        // hence it first sends a normal request, gets a 401 response that will not be passed on to the JS, and sends a new
        // request with an Authorization header before returning
        // (Note: this test will only work as expected if run once per browsing session)
        var open_user = token()
        client.open("GET", location.protocol+'//'+urlstart + "resources/auth4/auth.py", false, open_user, 'open-pass')
        client.setRequestHeader('X-User', open_user)
        // initial request - this will get a 401 response and re-try with HTTP auth
        client.send(null)
        assert_true(client.responseText == (open_user + '\nopen-pass'), 'responseText should contain the right user and password')
        assert_equals(client.status, 200)
        assert_equals(client.getResponseHeader('x-challenge'), 'DID')
        // Another request, this time user,pass is omitted and an Authorization header set explicitly
        // Here the URL is known to require authentication (from the request above), and the UA has cached open-user:open-pass credentials
        // However, these session credentials should now be overridden by the setRequestHeader() call so the UA should immediately
        // send basic Authorization header with credentials user:pass. (This part is perhaps not well specified anywhere)
        var user = token();
        client.open("GET", location.protocol+'//'+urlstart + "resources/auth4/auth.py", true)
        client.setRequestHeader("x-user", user)
        client.setRequestHeader('Authorization', 'Basic ' + btoa(user + ":pass"))
        client.onreadystatechange = function () {
          if (client.readyState < 4) {return}
          test.step( function () {
            assert_equals(client.responseText, user + '\npass')
            assert_equals(client.status, 200)
            assert_equals(client.getResponseHeader('x-challenge'), 'DID-NOT')
            test.done()
          } )
        }
        client.send(null)
      })
    </script>
    <p>Note: this test will only work as expected once per browsing session. Restart browser to re-test.</p>
  </body>
</html>