netwerk/test/browser/browser_103_preconnect.js

   1 /* This Source Code Form is subject to the terms of the Mozilla Public
   2  * License, v. 2.0. If a copy of the MPL was not distributed with this
   3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   4
   5 Services.prefs.setBoolPref("network.early-hints.enabled", true);
   6 Services.prefs.setBoolPref("network.early-hints.preconnect.enabled", true);
   7 Services.prefs.setBoolPref("network.http.debug-observations", true);
   8 Services.prefs.setIntPref("network.early-hints.preconnect.max_connections", 10);
   9
  10 registerCleanupFunction(function () {
  11   Services.prefs.clearUserPref("network.early-hints.enabled");
  12   Services.prefs.clearUserPref("network.early-hints.preconnect.enabled");
  13   Services.prefs.clearUserPref("network.http.debug-observations");
  14   Services.prefs.clearUserPref(
  15     "network.early-hints.preconnect.max_connections"
  16   );
  17 });
  18
  19 // Test steps:
  20 // 1. Load early_hint_preconnect_html.sjs
  21 // 2. In early_hint_preconnect_html.sjs, a 103 response with
  22 //    "rel=preconnect" is returned.
  23 // 3. We use "speculative-connect-request" topic to observe whether the
  24 //    speculative connection is attempted.
  25 // 4. Finally, we check if the observed URL is the same as the expected.
  26 async function test_hint_preconnect(href, crossOrigin) {
  27   let requestUrl = `https://example.com/browser/netwerk/test/browser/early_hint_preconnect_html.sjs?href=${href}&crossOrigin=${crossOrigin}`;
  28
  29   let observed = "";
  30   let observer = {
  31     QueryInterface: ChromeUtils.generateQI(["nsIObserver"]),
  32     observe(aSubject, aTopic, aData) {
  33       if (aTopic == "speculative-connect-request") {
  34         Services.obs.removeObserver(observer, "speculative-connect-request");
  35         observed = aData;
  36       }
  37     },
  38   };
  39   Services.obs.addObserver(observer, "speculative-connect-request");
  40
  41   await BrowserTestUtils.withNewTab(
  42     {
  43       gBrowser,
  44       url: requestUrl,
  45       waitForLoad: true,
  46     },
  47     async function () {}
  48   );
  49
  50   // Extracting "localhost:443"
  51   let hostPortRegex = /\[.*\](.*?)\^/;
  52   let hostPortMatch = hostPortRegex.exec(observed);
  53   let hostPort = hostPortMatch ? hostPortMatch[1] : "";
  54   // Extracting "%28https%2Cexample.com%29"
  55   let partitionKeyRegex = /\^partitionKey=(.*)$/;
  56   let partitionKeyMatch = partitionKeyRegex.exec(observed);
  57   let partitionKey = partitionKeyMatch ? partitionKeyMatch[1] : "";
  58   // See nsHttpConnectionInfo::BuildHashKey, the second character is A if this
  59   // is an anonymous connection.
  60   let anonymousFlag = observed[2];
  61
  62   Assert.equal(anonymousFlag, crossOrigin === "use-credentials" ? "." : "A");
  63   Assert.equal(hostPort, "localhost:443");
  64   Assert.equal(partitionKey, "%28https%2Cexample.com%29");
  65 }
  66
  67 add_task(async function test_103_preconnect() {
  68   await test_hint_preconnect("https://localhost", "use-credentials");
  69   await test_hint_preconnect("https://localhost", "");
  70   await test_hint_preconnect("https://localhost", "anonymous");
  71 });