accept_ch.sub.https.html
<html>
<body>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
// If the response for the HTML file contains "Accept-CH" in the response
// headers, then 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. The response headers
// for this page include "Accept-CH: device-memory, dpr, viewport-width".
//
// echo_client_hints_received.py includes "device-memory-received",
// "dpr-received" and "viewport-width-received" in 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", {"mode": "no-cors"}).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");
});
}, "Accept-CH header 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");
});
}, "Cross-Origin Accept-CH header test");
</script>
</body>
</html>