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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
// The server will always respond with a 103 EarlyHint followed by a
// 200 response.
// 103 response contains:
// 1) a non-link header
// 2) a link header if a request has a "link-to-set" header. If the
// request header is not set, the response will not have Link headers.
// A "link-to-set" header may contain multiple link headers
// separated with a comma.
const earlyhintspath = "/103_response";
const hint1 = "</style.css>; rel=preload; as=style";
const hint2 = "</img.png>; rel=preload; as=image";
let EarlyHintsListener = function () {};
EarlyHintsListener.prototype = {
_expected_hints: [],
earlyHintsReceived: 0,
QueryInterface: ChromeUtils.generateQI(["nsIEarlyHintObserver"]),
earlyHint(header) {
Assert.ok(this._expected_hints.includes(header));
this.earlyHintsReceived += 1;
},
};
function chanPromise(uri, listener, headers) {
var principal = Services.scriptSecurityManager.createContentPrincipal(
NetUtil.newURI(uri),
{}
);
var chan = NetUtil.newChannel({
uri,
loadingPrincipal: principal,
securityFlags: Ci.nsILoadInfo.SEC_ALLOW_CROSS_ORIGIN_SEC_CONTEXT_IS_NULL,
contentPolicyType: Ci.nsIContentPolicy.TYPE_DOCUMENT,
});
chan
.QueryInterface(Ci.nsIHttpChannel)
.setRequestHeader("link-to-set", headers, false);
chan.QueryInterface(Ci.nsIHttpChannelInternal).setEarlyHintObserver(listener);
return promiseAsyncOpen(chan);
}
registerCleanupFunction(async () => {
http3_clear_prefs();
});
add_task(async function setup() {
await http3_setup_tests("h3-29");
});
add_task(async function early_hints() {
let earlyHints = new EarlyHintsListener();
earlyHints._expected_hints = [hint1];
await chanPromise(
`https://foo.example.com${earlyhintspath}`,
earlyHints,
hint1
);
Assert.equal(earlyHints.earlyHintsReceived, 1);
});
// Test when there is no Link header in a 103 response.
// 103 response will contain non-link headers.
add_task(async function no_early_hints() {
let earlyHints = new EarlyHintsListener();
await chanPromise(`https://foo.example.com${earlyhintspath}`, earlyHints, "");
Assert.equal(earlyHints.earlyHintsReceived, 0);
});
add_task(async function early_hints_multiple() {
let earlyHints = new EarlyHintsListener();
earlyHints._expected_hints = [hint1, hint2];
await chanPromise(
`https://foo.example.com${earlyhintspath}`,
earlyHints,
hint1 + ", " + hint2
);
Assert.equal(earlyHints.earlyHintsReceived, 2);
});
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