1 files changed, 57 insertions, 0 deletions
diff --git a/netwerk/test/browser/browser_103_preconnect.js b/netwerk/test/browser/browser_103_preconnect.js
new file mode 100644
index 0000000000..d1774abb78
--- /dev/null
+++ b/netwerk/test/browser/browser_103_preconnect.js
@@ -0,0 +1,57 @@
+/* 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/. */
+
+Services.prefs.setBoolPref("network.early-hints.enabled", true);
+Services.prefs.setBoolPref("network.early-hints.preconnect.enabled", true);
+Services.prefs.setBoolPref("network.http.debug-observations", true);
+
+registerCleanupFunction(function() {
+  Services.prefs.clearUserPref("network.early-hints.enabled");
+  Services.prefs.clearUserPref("network.early-hints.preconnect.enabled");
+  Services.prefs.clearUserPref("network.http.debug-observations");
+});
+
+// Test steps:
+// 1. Load early_hint_preconnect_html.sjs
+// 2. In early_hint_preconnect_html.sjs, a 103 response with
+//    "rel=preconnect" is returned.
+// 3. We use "speculative-connect-request" topic to observe whether the
+//    speculative connection is attempted.
+// 4. Finally, we check if the observed URL is the same as the expected.
+async function test_hint_preconnect(href, crossOrigin) {
+  let requestUrl = `https://example.com/browser/netwerk/test/browser/early_hint_preconnect_html.sjs?href=${href}&crossOrigin=${crossOrigin}`;
+
+  let observed = "";
+  let observer = {
+    QueryInterface: ChromeUtils.generateQI(["nsIObserver"]),
+    observe(aSubject, aTopic, aData) {
+      if (aTopic == "speculative-connect-request") {
+        Services.obs.removeObserver(observer, "speculative-connect-request");
+        observed = aData;
+      }
+    },
+  };
+  Services.obs.addObserver(observer, "speculative-connect-request");
+
+  await BrowserTestUtils.withNewTab(
+    {
+      gBrowser,
+      url: requestUrl,
+      waitForLoad: true,
+    },
+    async function() {}
+  );
+
+  if (!crossOrigin) {
+    crossOrigin = "anonymous";
+  }
+
+  Assert.equal(observed, `${href}/${crossOrigin}`);
+}
+
+add_task(async function test_103_preconnect() {
+  await test_hint_preconnect("https://localhost", "use-credentials");
+  await test_hint_preconnect("https://localhost", "");
+  await test_hint_preconnect("https://localhost", "anonymous");
+});