1 files changed, 180 insertions, 0 deletions
diff --git a/netwerk/test/unit/test_trr_cancel.js b/netwerk/test/unit/test_trr_cancel.js
new file mode 100644
index 0000000000..60b65d7eaf
--- /dev/null
+++ b/netwerk/test/unit/test_trr_cancel.js
@@ -0,0 +1,180 @@
+/* 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";
+
+trr_test_setup();
+registerCleanupFunction(async () => {
+  trr_clear_prefs();
+});
+
+let trrServer = null;
+add_task(async function start_trr_server() {
+  trrServer = new TRRServer();
+  registerCleanupFunction(async () => {
+    await trrServer.stop();
+  });
+  await trrServer.start();
+  dump(`port = ${trrServer.port()}\n`);
+
+  Services.prefs.setCharPref(
+    "network.trr.uri",
+    `https://foo.example.com:${trrServer.port()}/dns-query`
+  );
+  Services.prefs.setIntPref("network.trr.mode", Ci.nsIDNSService.MODE_TRRFIRST);
+});
+
+add_task(async function sanity_check() {
+  await trrServer.registerDoHAnswers("example.com", "A", {
+    answers: [
+      {
+        name: "example.com",
+        ttl: 55,
+        type: "A",
+        flush: false,
+        data: "1.2.3.4",
+      },
+    ],
+  });
+  // Simple check to see that TRR works.
+  await new TRRDNSListener("example.com", { expectedAnswer: "1.2.3.4" });
+});
+
+// Cancelling the request is not sync when using the socket process, so
+// we skip this test when it's enabled.
+add_task(
+  { skip_if: () => mozinfo.socketprocess_networking },
+  async function cancel_immediately() {
+    await trrServer.registerDoHAnswers("example.org", "A", {
+      answers: [
+        {
+          name: "example.org",
+          ttl: 55,
+          type: "A",
+          flush: false,
+          data: "2.3.4.5",
+        },
+      ],
+    });
+    let r1 = new TRRDNSListener("example.org", { expectedSuccess: false });
+    let r2 = new TRRDNSListener("example.org", { expectedAnswer: "2.3.4.5" });
+    r1.cancel();
+    let { inStatus } = await r1;
+    equal(inStatus, Cr.NS_ERROR_ABORT);
+    await r2;
+    equal(await trrServer.requestCount("example.org", "A"), 1);
+
+    // Now we cancel both of them
+    Services.dns.clearCache(true);
+    r1 = new TRRDNSListener("example.org", { expectedSuccess: false });
+    r2 = new TRRDNSListener("example.org", { expectedSuccess: false });
+    r1.cancel();
+    r2.cancel();
+    ({ inStatus } = await r1);
+    equal(inStatus, Cr.NS_ERROR_ABORT);
+    ({ inStatus } = await r2);
+    equal(inStatus, Cr.NS_ERROR_ABORT);
+    await new Promise(resolve => do_timeout(50, resolve));
+    equal(await trrServer.requestCount("example.org", "A"), 2);
+  }
+);
+
+add_task(async function cancel_delayed() {
+  Services.dns.clearCache(true);
+  await trrServer.registerDoHAnswers("example.com", "A", {
+    answers: [
+      {
+        name: "example.com",
+        ttl: 55,
+        type: "A",
+        flush: false,
+        data: "1.1.1.1",
+      },
+    ],
+    delay: 500,
+  });
+  let r1 = new TRRDNSListener("example.com", { expectedSuccess: false });
+  let r2 = new TRRDNSListener("example.com", { expectedAnswer: "1.1.1.1" });
+  await new Promise(resolve => do_timeout(50, resolve));
+  r1.cancel();
+  let { inStatus } = await r1;
+  equal(inStatus, Cr.NS_ERROR_ABORT);
+  await r2;
+});
+
+add_task(async function cancel_after_completed() {
+  Services.dns.clearCache(true);
+  await trrServer.registerDoHAnswers("example.com", "A", {
+    answers: [
+      {
+        name: "example.com",
+        ttl: 55,
+        type: "A",
+        flush: false,
+        data: "2.2.2.2",
+      },
+    ],
+  });
+  let r1 = new TRRDNSListener("example.com", { expectedAnswer: "2.2.2.2" });
+  await r1;
+  let r2 = new TRRDNSListener("example.com", { expectedAnswer: "2.2.2.2" });
+  // Check that cancelling r1 after it's complete does not affect r2 in any way.
+  r1.cancel();
+  await r2;
+});
+
+add_task(async function clearCacheWhileResolving() {
+  Services.dns.clearCache(true);
+  await trrServer.registerDoHAnswers("example.com", "A", {
+    answers: [
+      {
+        name: "example.com",
+        ttl: 55,
+        type: "A",
+        flush: false,
+        data: "3.3.3.3",
+      },
+    ],
+    delay: 500,
+  });
+  // Check that calling clearCache does not leave the request hanging.
+  let r1 = new TRRDNSListener("example.com", { expectedAnswer: "3.3.3.3" });
+  let r2 = new TRRDNSListener("example.com", { expectedAnswer: "3.3.3.3" });
+  Services.dns.clearCache(true);
+  await r1;
+  await r2;
+
+  // Also check the same for HTTPS records
+  await trrServer.registerDoHAnswers("httpsvc.com", "HTTPS", {
+    answers: [
+      {
+        name: "httpsvc.com",
+        ttl: 55,
+        type: "HTTPS",
+        flush: false,
+        data: {
+          priority: 1,
+          name: "test.p1.com",
+          values: [{ key: "alpn", value: ["h2", "h3"] }],
+        },
+      },
+    ],
+    delay: 500,
+  });
+  let r3 = new TRRDNSListener("httpsvc.com", {
+    type: Ci.nsIDNSService.RESOLVE_TYPE_HTTPSSVC,
+  });
+  let r4 = new TRRDNSListener("httpsvc.com", {
+    type: Ci.nsIDNSService.RESOLVE_TYPE_HTTPSSVC,
+  });
+  Services.dns.clearCache(true);
+  await r3;
+  await r4;
+  equal(await trrServer.requestCount("httpsvc.com", "HTTPS"), 1);
+  Services.dns.clearCache(true);
+  await new TRRDNSListener("httpsvc.com", {
+    type: Ci.nsIDNSService.RESOLVE_TYPE_HTTPSSVC,
+  });
+  equal(await trrServer.requestCount("httpsvc.com", "HTTPS"), 2);
+});