<html>
<meta http-equiv="Accept-CH" content="DPR, Width, Viewport-Width, Device-Memory, rtt, downlink, ect, lang">
<title>Accept-CH http-equiv same-origin and cross-origin test</title>
<body>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>

<script>

// Since this HTML file contains "Accept-CH" http-equiv headers the browser
// should attach the specified client hints in the HTTP request headers
// depending on whether the resource is being fetched from
// the same origin or a different origin. Test this functionality by fetching
// same-origin and cross-origin resources from this page.
//
// echo_client_hints_received.py sets the response headers depending on the set
// of client hints it receives in the request headers.

promise_test(t => {
  return fetch("https://{{domains[]}}:{{ports[https][0]}}/client-hints/echo_client_hints_received.py").then(r => {
    assert_equals(r.status, 200)
    // Verify that the browser includes client hints in the headers for a
    // same-origin fetch.
    assert_true(r.headers.has("device-memory-received"), "device-memory-received");
    assert_true(r.headers.has("dpr-received"), "dpr-received");
    assert_true(r.headers.has("viewport-width-received"), "viewport-width-received");

    assert_true(r.headers.has("rtt-received"), "rtt-received");
    var rtt = parseInt(r.headers.get("rtt-received"));
    assert_greater_than_equal(rtt, 0);
    assert_less_than_equal(rtt, 3000);
    assert_equals(rtt % 50, 0, 'rtt must be a multiple of 50 msec');

    assert_true(r.headers.has("downlink-received"), "downlink-received");
    var downlinkKbps  = r.headers.get("downlink-received") * 1000;
    assert_greater_than_equal(downlinkKbps, 0);
    assert_less_than_equal(downlinkKbps, 10000);

    assert_in_array(r.headers.get("ect-received"), ["slow-2g", "2g",
          "3g", "4g"], 'ect-received is unexpected');

    assert_true(r.headers.has("lang-received"), "lang-received");
  });
}, "Same origin Accept-CH http-equiv test");

promise_test(t => {
  return fetch("https://{{domains[www]}}:{{ports[https][0]}}/client-hints/echo_client_hints_received.py").then(r => {
    assert_equals(r.status, 200)
    // Verify that the browser does not include client hints in the headers
    // for a cross-origin fetch.
    assert_false(r.headers.has("device-memory-received"), "device-memory-received");
    assert_false(r.headers.has("dpr-received"), "dpr-received");
    assert_false(r.headers.has("viewport-width-received"), "viewport-width-received");
    assert_false(r.headers.has("rtt-received"), "rtt-received");
    assert_false(r.headers.has("downlink-received"), "downlink-received");
    assert_false(r.headers.has("ect-received"), "ect-received");
    assert_false(r.headers.has("lang-received"), "lang-received");
  });
}, "Cross-Origin Accept-CH http-equiv test");


</script>
</body>
</html>