1 files changed, 123 insertions, 0 deletions
diff --git a/netwerk/test/unit/test_http3_server_not_existing.js b/netwerk/test/unit/test_http3_server_not_existing.js
new file mode 100644
index 0000000000..31ce77cc36
--- /dev/null
+++ b/netwerk/test/unit/test_http3_server_not_existing.js
@@ -0,0 +1,123 @@
+/* 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";
+
+let httpsUri;
+
+registerCleanupFunction(async () => {
+  Services.prefs.clearUserPref("network.http.http3.enabled");
+  Services.prefs.clearUserPref("network.dns.localDomains");
+  Services.prefs.clearUserPref("network.dns.disableIPv6");
+  Services.prefs.clearUserPref(
+    "network.http.http3.alt-svc-mapping-for-testing"
+  );
+  Services.prefs.clearUserPref("network.http.http3.backup_timer_delay");
+  dump("cleanup done\n");
+});
+
+function chanPromise(chan, listener) {
+  return new Promise(resolve => {
+    function finish() {
+      resolve();
+    }
+    listener.finish = finish;
+    chan.asyncOpen(listener);
+  });
+}
+
+function makeChan() {
+  let chan = NetUtil.newChannel({
+    uri: httpsUri,
+    loadUsingSystemPrincipal: true,
+  }).QueryInterface(Ci.nsIHttpChannel);
+  chan.loadFlags = Ci.nsIChannel.LOAD_INITIAL_DOCUMENT_URI;
+  return chan;
+}
+
+function altsvcSetupPromise(chan, listener) {
+  return new Promise(resolve => {
+    function finish(result) {
+      resolve(result);
+    }
+    listener.finish = finish;
+    chan.asyncOpen(listener);
+  });
+}
+
+add_task(async function test_fatal_error() {
+  let env = Cc["@mozilla.org/process/environment;1"].getService(
+    Ci.nsIEnvironment
+  );
+
+  let h2Port = env.get("MOZHTTP2_PORT");
+  Assert.notEqual(h2Port, null);
+
+  Services.prefs.setBoolPref("network.http.http3.enabled", true);
+  Services.prefs.setCharPref("network.dns.localDomains", "foo.example.com");
+  Services.prefs.setBoolPref("network.dns.disableIPv6", true);
+  // Set AltSvc to point to not existing HTTP3 server on port 443
+  Services.prefs.setCharPref(
+    "network.http.http3.alt-svc-mapping-for-testing",
+    "foo.example.com;h3-27=:443"
+  );
+  Services.prefs.setIntPref("network.http.http3.backup_timer_delay", 0);
+
+  let certdb = Cc["@mozilla.org/security/x509certdb;1"].getService(
+    Ci.nsIX509CertDB
+  );
+  addCertFromFile(certdb, "http2-ca.pem", "CTu,u,u");
+
+  httpsUri = "https://foo.example.com:" + h2Port + "/";
+});
+
+add_task(async function test_fatal_stream_error() {
+  let result = 1;
+  // We need to loop here because we need to wait for AltSvc storage to
+  // to be started.
+  // We also do not have a way to verify that HTTP3 has been tried, because
+  // the fallback is automatic, so try a couple of times.
+  do {
+    // We need to close HTTP2 connections, otherwise our connection pooling
+    // will dispatch the request over already existing HTTP2 connection.
+    Services.obs.notifyObservers(null, "net:prune-all-connections");
+    let chan = makeChan();
+    let listener = new CheckOnlyHttp2Listener();
+    await altsvcSetupPromise(chan, listener);
+    result++;
+  } while (result < 5);
+});
+
+let CheckOnlyHttp2Listener = function() {};
+
+CheckOnlyHttp2Listener.prototype = {
+  onStartRequest: function testOnStartRequest(request) {},
+
+  onDataAvailable: function testOnDataAvailable(request, stream, off, cnt) {
+    read_stream(stream, cnt);
+  },
+
+  onStopRequest: function testOnStopRequest(request, status) {
+    Assert.equal(status, Cr.NS_OK);
+    let httpVersion = "";
+    try {
+      httpVersion = request.protocolVersion;
+    } catch (e) {}
+    Assert.equal(httpVersion, "h2");
+    this.finish();
+  },
+};
+
+add_task(async function test_no_http3_after_error() {
+  let chan = makeChan();
+  let listener = new CheckOnlyHttp2Listener();
+  await altsvcSetupPromise(chan, listener);
+});
+
+// also after all connections are closed.
+add_task(async function test_no_http3_after_error2() {
+  Services.obs.notifyObservers(null, "net:prune-all-connections");
+  let chan = makeChan();
+  let listener = new CheckOnlyHttp2Listener();
+  await altsvcSetupPromise(chan, listener);
+});