netwerk/test/unit/test_trr_https_fallback.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 "use strict";
   6
   7 const { TestUtils } = ChromeUtils.importESModule(
   8   "resource://testing-common/TestUtils.sys.mjs"
   9 );
  10
  11 let h2Port;
  12 let h3Port;
  13 let h3NoResponsePort;
  14 let trrServer;
  15
  16 const certOverrideService = Cc[
  17   "@mozilla.org/security/certoverride;1"
  18 ].getService(Ci.nsICertOverrideService);
  19
  20 add_setup(async function setup() {
  21   trr_test_setup();
  22
  23   h2Port = Services.env.get("MOZHTTP2_PORT");
  24   Assert.notEqual(h2Port, null);
  25   Assert.notEqual(h2Port, "");
  26
  27   h3Port = Services.env.get("MOZHTTP3_PORT");
  28   Assert.notEqual(h3Port, null);
  29   Assert.notEqual(h3Port, "");
  30
  31   h3NoResponsePort = Services.env.get("MOZHTTP3_PORT_NO_RESPONSE");
  32   Assert.notEqual(h3NoResponsePort, null);
  33   Assert.notEqual(h3NoResponsePort, "");
  34
  35   Services.prefs.setBoolPref("network.dns.upgrade_with_https_rr", true);
  36   Services.prefs.setBoolPref("network.dns.use_https_rr_as_altsvc", true);
  37   Services.prefs.setBoolPref("network.dns.echconfig.enabled", true);
  38
  39   registerCleanupFunction(async () => {
  40     trr_clear_prefs();
  41     Services.prefs.clearUserPref("network.dns.upgrade_with_https_rr");
  42     Services.prefs.clearUserPref("network.dns.use_https_rr_as_altsvc");
  43     Services.prefs.clearUserPref("network.dns.echconfig.enabled");
  44     Services.prefs.clearUserPref(
  45       "network.dns.echconfig.fallback_to_origin_when_all_failed"
  46     );
  47     Services.prefs.clearUserPref("network.dns.httpssvc.reset_exclustion_list");
  48     Services.prefs.clearUserPref("network.http.http3.enable");
  49     Services.prefs.clearUserPref(
  50       "network.dns.httpssvc.http3_fast_fallback_timeout"
  51     );
  52     Services.prefs.clearUserPref("network.http.speculative-parallel-limit");
  53     Services.prefs.clearUserPref("network.dns.localDomains");
  54     Services.prefs.clearUserPref("network.dns.http3_echconfig.enabled");
  55     if (trrServer) {
  56       await trrServer.stop();
  57     }
  58   });
  59
  60   if (mozinfo.socketprocess_networking) {
  61     Services.dns; // Needed to trigger socket process.
  62     await TestUtils.waitForCondition(() => Services.io.socketProcessLaunched);
  63   }
  64
  65   Services.prefs.setIntPref("network.trr.mode", Ci.nsIDNSService.MODE_TRRFIRST);
  66 });
  67
  68 function makeChan(url) {
  69   let chan = NetUtil.newChannel({
  70     uri: url,
  71     loadUsingSystemPrincipal: true,
  72     contentPolicyType: Ci.nsIContentPolicy.TYPE_DOCUMENT,
  73   }).QueryInterface(Ci.nsIHttpChannel);
  74   return chan;
  75 }
  76
  77 function channelOpenPromise(chan, flags) {
  78   return new Promise(resolve => {
  79     function finish(req, buffer) {
  80       resolve([req, buffer]);
  81       certOverrideService.setDisableAllSecurityChecksAndLetAttackersInterceptMyData(
  82         false
  83       );
  84     }
  85     let internal = chan.QueryInterface(Ci.nsIHttpChannelInternal);
  86     internal.setWaitForHTTPSSVCRecord();
  87     certOverrideService.setDisableAllSecurityChecksAndLetAttackersInterceptMyData(
  88       true
  89     );
  90     chan.asyncOpen(new ChannelListener(finish, null, flags));
  91   });
  92 }
  93
  94 // Test if we can fallback to the last record sucessfully.
  95 add_task(async function testFallbackToTheLastRecord() {
  96   trrServer = new TRRServer();
  97   await trrServer.start();
  98
  99   Services.prefs.setIntPref("network.trr.mode", 3);
 100   Services.prefs.setCharPref(
 101     "network.trr.uri",
 102     `https://foo.example.com:${trrServer.port}/dns-query`
 103   );
 104
 105   // Only the last record is valid to use.
 106   await trrServer.registerDoHAnswers("test.fallback.com", "HTTPS", {
 107     answers: [
 108       {
 109         name: "test.fallback.com",
 110         ttl: 55,
 111         type: "HTTPS",
 112         flush: false,
 113         data: {
 114           priority: 1,
 115           name: "test.fallback1.com",
 116           values: [
 117             { key: "alpn", value: ["h2", "h3-26"] },
 118             { key: "echconfig", value: "123..." },
 119           ],
 120         },
 121       },
 122       {
 123         name: "test.fallback.com",
 124         ttl: 55,
 125         type: "HTTPS",
 126         flush: false,
 127         data: {
 128           priority: 4,
 129           name: "foo.example.com",
 130           values: [
 131             { key: "alpn", value: ["h2", "h3-26"] },
 132             { key: "port", value: h2Port },
 133             { key: "echconfig", value: "456..." },
 134           ],
 135         },
 136       },
 137       {
 138         name: "test.fallback.com",
 139         ttl: 55,
 140         type: "HTTPS",
 141         flush: false,
 142         data: {
 143           priority: 3,
 144           name: "test.fallback3.com",
 145           values: [
 146             { key: "alpn", value: ["h2", "h3-26"] },
 147             { key: "echconfig", value: "456..." },
 148           ],
 149         },
 150       },
 151       {
 152         name: "test.fallback.com",
 153         ttl: 55,
 154         type: "HTTPS",
 155         flush: false,
 156         data: {
 157           priority: 2,
 158           name: "test.fallback2.com",
 159           values: [
 160             { key: "alpn", value: ["h2", "h3-26"] },
 161             { key: "echconfig", value: "456..." },
 162           ],
 163         },
 164       },
 165     ],
 166   });
 167
 168   await new TRRDNSListener("test.fallback.com", {
 169     type: Ci.nsIDNSService.RESOLVE_TYPE_HTTPSSVC,
 170   });
 171
 172   let chan = makeChan(`https://test.fallback.com:${h2Port}/server-timing`);
 173   let [req] = await channelOpenPromise(chan);
 174   // Test if this request is done by h2.
 175   Assert.equal(req.getResponseHeader("x-connection-http2"), "yes");
 176
 177   await trrServer.stop();
 178 });
 179
 180 add_task(async function testFallbackToTheOrigin() {
 181   trrServer = new TRRServer();
 182   await trrServer.start();
 183   Services.prefs.setIntPref("network.trr.mode", 3);
 184   Services.prefs.setBoolPref(
 185     "network.dns.echconfig.fallback_to_origin_when_all_failed",
 186     true
 187   );
 188   Services.prefs.setCharPref(
 189     "network.trr.uri",
 190     `https://foo.example.com:${trrServer.port}/dns-query`
 191   );
 192
 193   // All records are not able to use to connect, so we fallback to the origin
 194   // one.
 195   await trrServer.registerDoHAnswers("test.foo.com", "HTTPS", {
 196     answers: [
 197       {
 198         name: "test.foo.com",
 199         ttl: 55,
 200         type: "HTTPS",
 201         flush: false,
 202         data: {
 203           priority: 1,
 204           name: "test.foo1.com",
 205           values: [
 206             { key: "alpn", value: ["h2", "h3-26"] },
 207             { key: "echconfig", value: "123..." },
 208           ],
 209         },
 210       },
 211       {
 212         name: "test.foo.com",
 213         ttl: 55,
 214         type: "HTTPS",
 215         flush: false,
 216         data: {
 217           priority: 3,
 218           name: "test.foo3.com",
 219           values: [
 220             { key: "alpn", value: ["h2", "h3-26"] },
 221             { key: "echconfig", value: "456..." },
 222           ],
 223         },
 224       },
 225       {
 226         name: "test.foo.com",
 227         ttl: 55,
 228         type: "HTTPS",
 229         flush: false,
 230         data: {
 231           priority: 2,
 232           name: "test.foo2.com",
 233           values: [
 234             { key: "alpn", value: ["h2", "h3-26"] },
 235             { key: "echconfig", value: "456..." },
 236           ],
 237         },
 238       },
 239     ],
 240   });
 241
 242   await trrServer.registerDoHAnswers("test.foo.com", "A", {
 243     answers: [
 244       {
 245         name: "test.foo.com",
 246         ttl: 55,
 247         type: "A",
 248         flush: false,
 249         data: "127.0.0.1",
 250       },
 251     ],
 252   });
 253
 254   await new TRRDNSListener("test.foo.com", {
 255     type: Ci.nsIDNSService.RESOLVE_TYPE_HTTPSSVC,
 256   });
 257
 258   let chan = makeChan(`https://test.foo.com:${h2Port}/server-timing`);
 259   let [req] = await channelOpenPromise(chan);
 260   // Test if this request is done by h2.
 261   Assert.equal(req.getResponseHeader("x-connection-http2"), "yes");
 262
 263   await trrServer.stop();
 264 });
 265
 266 // Test when all records are failed and network.dns.echconfig.fallback_to_origin
 267 // is false. In this case, the connection is always failed.
 268 add_task(async function testAllRecordsFailed() {
 269   trrServer = new TRRServer();
 270   await trrServer.start();
 271   Services.prefs.setIntPref("network.trr.mode", 3);
 272   Services.prefs.setCharPref(
 273     "network.trr.uri",
 274     `https://foo.example.com:${trrServer.port}/dns-query`
 275   );
 276   Services.prefs.setBoolPref(
 277     "network.dns.echconfig.fallback_to_origin_when_all_failed",
 278     false
 279   );
 280
 281   await trrServer.registerDoHAnswers("test.bar.com", "HTTPS", {
 282     answers: [
 283       {
 284         name: "test.bar.com",
 285         ttl: 55,
 286         type: "HTTPS",
 287         flush: false,
 288         data: {
 289           priority: 1,
 290           name: "test.bar1.com",
 291           values: [
 292             { key: "alpn", value: ["h2", "h3-26"] },
 293             { key: "echconfig", value: "123..." },
 294           ],
 295         },
 296       },
 297       {
 298         name: "test.bar.com",
 299         ttl: 55,
 300         type: "HTTPS",
 301         flush: false,
 302         data: {
 303           priority: 3,
 304           name: "test.bar3.com",
 305           values: [
 306             { key: "alpn", value: ["h2", "h3-26"] },
 307             { key: "echconfig", value: "456..." },
 308           ],
 309         },
 310       },
 311       {
 312         name: "test.bar.com",
 313         ttl: 55,
 314         type: "HTTPS",
 315         flush: false,
 316         data: {
 317           priority: 2,
 318           name: "test.bar2.com",
 319           values: [
 320             { key: "alpn", value: ["h2", "h3-26"] },
 321             { key: "echconfig", value: "456..." },
 322           ],
 323         },
 324       },
 325     ],
 326   });
 327
 328   await new TRRDNSListener("test.bar.com", {
 329     type: Ci.nsIDNSService.RESOLVE_TYPE_HTTPSSVC,
 330   });
 331
 332   // This channel should be failed.
 333   let chan = makeChan(`https://test.bar.com:${h2Port}/server-timing`);
 334   await channelOpenPromise(chan, CL_EXPECT_LATE_FAILURE | CL_ALLOW_UNKNOWN_CL);
 335
 336   await trrServer.stop();
 337 });
 338
 339 // Test when all records have no echConfig, we directly fallback to the origin
 340 // one.
 341 add_task(async function testFallbackToTheOrigin2() {
 342   trrServer = new TRRServer();
 343   await trrServer.start();
 344   Services.prefs.setIntPref("network.trr.mode", 3);
 345   Services.prefs.setCharPref(
 346     "network.trr.uri",
 347     `https://foo.example.com:${trrServer.port}/dns-query`
 348   );
 349
 350   await trrServer.registerDoHAnswers("test.example.com", "HTTPS", {
 351     answers: [
 352       {
 353         name: "test.example.com",
 354         ttl: 55,
 355         type: "HTTPS",
 356         flush: false,
 357         data: {
 358           priority: 1,
 359           name: "test.example1.com",
 360           values: [{ key: "alpn", value: ["h2", "h3-26"] }],
 361         },
 362       },
 363       {
 364         name: "test.example.com",
 365         ttl: 55,
 366         type: "HTTPS",
 367         flush: false,
 368         data: {
 369           priority: 3,
 370           name: "test.example3.com",
 371           values: [{ key: "alpn", value: ["h2", "h3-26"] }],
 372         },
 373       },
 374     ],
 375   });
 376
 377   await new TRRDNSListener("test.example.com", {
 378     type: Ci.nsIDNSService.RESOLVE_TYPE_HTTPSSVC,
 379   });
 380
 381   let chan = makeChan(`https://test.example.com:${h2Port}/server-timing`);
 382   await channelOpenPromise(chan, CL_EXPECT_LATE_FAILURE | CL_ALLOW_UNKNOWN_CL);
 383
 384   await trrServer.registerDoHAnswers("test.example.com", "A", {
 385     answers: [
 386       {
 387         name: "test.example.com",
 388         ttl: 55,
 389         type: "A",
 390         flush: false,
 391         data: "127.0.0.1",
 392       },
 393     ],
 394   });
 395
 396   chan = makeChan(`https://test.example.com:${h2Port}/server-timing`);
 397   await channelOpenPromise(chan);
 398
 399   await trrServer.stop();
 400 });
 401
 402 // Test when some records have echConfig and some not, we directly fallback to
 403 // the origin one.
 404 add_task(async function testFallbackToTheOrigin3() {
 405   Services.dns.clearCache(true);
 406
 407   trrServer = new TRRServer();
 408   await trrServer.start();
 409   Services.prefs.setIntPref("network.trr.mode", 3);
 410   Services.prefs.setCharPref(
 411     "network.trr.uri",
 412     `https://foo.example.com:${trrServer.port}/dns-query`
 413   );
 414
 415   await trrServer.registerDoHAnswers("vulnerable.com", "A", {
 416     answers: [
 417       {
 418         name: "vulnerable.com",
 419         ttl: 55,
 420         type: "A",
 421         flush: false,
 422         data: "127.0.0.1",
 423       },
 424     ],
 425   });
 426
 427   await trrServer.registerDoHAnswers("vulnerable.com", "HTTPS", {
 428     answers: [
 429       {
 430         name: "vulnerable.com",
 431         ttl: 55,
 432         type: "HTTPS",
 433         flush: false,
 434         data: {
 435           priority: 1,
 436           name: "vulnerable1.com",
 437           values: [
 438             { key: "alpn", value: ["h2", "h3-26"] },
 439             { key: "echconfig", value: "456..." },
 440           ],
 441         },
 442       },
 443       {
 444         name: "vulnerable.com",
 445         ttl: 55,
 446         type: "HTTPS",
 447         flush: false,
 448         data: {
 449           priority: 2,
 450           name: "vulnerable2.com",
 451           values: [
 452             { key: "alpn", value: ["h2", "h3-26"] },
 453             { key: "echconfig", value: "456..." },
 454           ],
 455         },
 456       },
 457       {
 458         name: "vulnerable.com",
 459         ttl: 55,
 460         type: "HTTPS",
 461         flush: false,
 462         data: {
 463           priority: 3,
 464           name: "vulnerable3.com",
 465           values: [{ key: "alpn", value: ["h2", "h3-26"] }],
 466         },
 467       },
 468     ],
 469   });
 470
 471   await new TRRDNSListener("vulnerable.com", {
 472     type: Ci.nsIDNSService.RESOLVE_TYPE_HTTPSSVC,
 473   });
 474
 475   let chan = makeChan(`https://vulnerable.com:${h2Port}/server-timing`);
 476   await channelOpenPromise(chan);
 477
 478   await trrServer.stop();
 479 });
 480
 481 add_task(async function testResetExclusionList() {
 482   trrServer = new TRRServer();
 483   await trrServer.start();
 484   Services.prefs.setIntPref("network.trr.mode", 3);
 485   Services.prefs.setCharPref(
 486     "network.trr.uri",
 487     `https://foo.example.com:${trrServer.port}/dns-query`
 488   );
 489   Services.prefs.setBoolPref(
 490     "network.dns.httpssvc.reset_exclustion_list",
 491     false
 492   );
 493
 494   await trrServer.registerDoHAnswers("test.reset.com", "HTTPS", {
 495     answers: [
 496       {
 497         name: "test.reset.com",
 498         ttl: 55,
 499         type: "HTTPS",
 500         flush: false,
 501         data: {
 502           priority: 1,
 503           name: "test.reset1.com",
 504           values: [
 505             { key: "alpn", value: ["h2", "h3-26"] },
 506             { key: "port", value: h2Port },
 507             { key: "echconfig", value: "456..." },
 508           ],
 509         },
 510       },
 511       {
 512         name: "test.reset.com",
 513         ttl: 55,
 514         type: "HTTPS",
 515         flush: false,
 516         data: {
 517           priority: 2,
 518           name: "test.reset2.com",
 519           values: [
 520             { key: "alpn", value: ["h2", "h3-26"] },
 521             { key: "echconfig", value: "456..." },
 522           ],
 523         },
 524       },
 525     ],
 526   });
 527
 528   await new TRRDNSListener("test.reset.com", {
 529     type: Ci.nsIDNSService.RESOLVE_TYPE_HTTPSSVC,
 530   });
 531
 532   // After this request, test.reset1.com and test.reset2.com should be both in
 533   // the exclusion list.
 534   let chan = makeChan(`https://test.reset.com:${h2Port}/server-timing`);
 535   await channelOpenPromise(chan, CL_EXPECT_LATE_FAILURE | CL_ALLOW_UNKNOWN_CL);
 536
 537   // This request should be also failed, because all records are excluded.
 538   chan = makeChan(`https://test.reset.com:${h2Port}/server-timing`);
 539   await channelOpenPromise(chan, CL_EXPECT_LATE_FAILURE | CL_ALLOW_UNKNOWN_CL);
 540
 541   await trrServer.registerDoHAnswers("test.reset1.com", "A", {
 542     answers: [
 543       {
 544         name: "test.reset1.com",
 545         ttl: 55,
 546         type: "A",
 547         flush: false,
 548         data: "127.0.0.1",
 549       },
 550     ],
 551   });
 552
 553   Services.prefs.setBoolPref(
 554     "network.dns.httpssvc.reset_exclustion_list",
 555     true
 556   );
 557
 558   // After enable network.dns.httpssvc.reset_exclustion_list and register
 559   // A record for test.reset1.com, this request should be succeeded.
 560   chan = makeChan(`https://test.reset.com:${h2Port}/server-timing`);
 561   await channelOpenPromise(chan);
 562
 563   await trrServer.stop();
 564 });
 565
 566 // Simply test if we can connect to H3 server.
 567 add_task(async function testH3Connection() {
 568   trrServer = new TRRServer();
 569   await trrServer.start();
 570   Services.prefs.setIntPref("network.trr.mode", 3);
 571   Services.prefs.setCharPref(
 572     "network.trr.uri",
 573     `https://foo.example.com:${trrServer.port}/dns-query`
 574   );
 575   Services.prefs.setBoolPref("network.http.http3.enable", true);
 576
 577   Services.prefs.setIntPref(
 578     "network.dns.httpssvc.http3_fast_fallback_timeout",
 579     100
 580   );
 581
 582   await trrServer.registerDoHAnswers("test.h3.com", "HTTPS", {
 583     answers: [
 584       {
 585         name: "test.h3.com",
 586         ttl: 55,
 587         type: "HTTPS",
 588         flush: false,
 589         data: {
 590           priority: 1,
 591           name: "www.h3.com",
 592           values: [
 593             { key: "alpn", value: "h3-29" },
 594             { key: "port", value: h3Port },
 595             { key: "echconfig", value: "456..." },
 596           ],
 597         },
 598       },
 599     ],
 600   });
 601
 602   await trrServer.registerDoHAnswers("www.h3.com", "A", {
 603     answers: [
 604       {
 605         name: "www.h3.com",
 606         ttl: 55,
 607         type: "A",
 608         flush: false,
 609         data: "127.0.0.1",
 610       },
 611     ],
 612   });
 613
 614   await new TRRDNSListener("test.h3.com", {
 615     type: Ci.nsIDNSService.RESOLVE_TYPE_HTTPSSVC,
 616   });
 617
 618   let chan = makeChan(`https://test.h3.com`);
 619   let [req] = await channelOpenPromise(chan);
 620   Assert.equal(req.protocolVersion, "h3-29");
 621   let internal = req.QueryInterface(Ci.nsIHttpChannelInternal);
 622   Assert.equal(internal.remotePort, h3Port);
 623
 624   await trrServer.stop();
 625 });
 626
 627 add_task(async function testFastfallbackToH2() {
 628   trrServer = new TRRServer();
 629   await trrServer.start();
 630   Services.prefs.setIntPref("network.trr.mode", 3);
 631   Services.prefs.setCharPref(
 632     "network.trr.uri",
 633     `https://foo.example.com:${trrServer.port}/dns-query`
 634   );
 635   Services.prefs.setBoolPref("network.http.http3.enable", true);
 636   // Use a short timeout to make sure the fast fallback timer will be triggered.
 637   Services.prefs.setIntPref(
 638     "network.dns.httpssvc.http3_fast_fallback_timeout",
 639     1
 640   );
 641   Services.prefs.setCharPref(
 642     "network.dns.localDomains",
 643     "test.fastfallback1.com"
 644   );
 645
 646   await trrServer.registerDoHAnswers("test.fastfallback.com", "HTTPS", {
 647     answers: [
 648       {
 649         name: "test.fastfallback.com",
 650         ttl: 55,
 651         type: "HTTPS",
 652         flush: false,
 653         data: {
 654           priority: 1,
 655           name: "test.fastfallback1.com",
 656           values: [
 657             { key: "alpn", value: "h3-29" },
 658             { key: "port", value: h3NoResponsePort },
 659             { key: "echconfig", value: "456..." },
 660           ],
 661         },
 662       },
 663       {
 664         name: "test.fastfallback.com",
 665         ttl: 55,
 666         type: "HTTPS",
 667         flush: false,
 668         data: {
 669           priority: 2,
 670           name: "test.fastfallback2.com",
 671           values: [
 672             { key: "alpn", value: "h2" },
 673             { key: "port", value: h2Port },
 674             { key: "echconfig", value: "456..." },
 675           ],
 676         },
 677       },
 678     ],
 679   });
 680
 681   await trrServer.registerDoHAnswers("test.fastfallback2.com", "A", {
 682     answers: [
 683       {
 684         name: "test.fastfallback2.com",
 685         ttl: 55,
 686         type: "A",
 687         flush: false,
 688         data: "127.0.0.1",
 689       },
 690     ],
 691   });
 692
 693   await new TRRDNSListener("test.fastfallback.com", {
 694     type: Ci.nsIDNSService.RESOLVE_TYPE_HTTPSSVC,
 695   });
 696
 697   let chan = makeChan(`https://test.fastfallback.com/server-timing`);
 698   let [req] = await channelOpenPromise(chan);
 699   Assert.equal(req.protocolVersion, "h2");
 700   let internal = req.QueryInterface(Ci.nsIHttpChannelInternal);
 701   Assert.equal(internal.remotePort, h2Port);
 702
 703   // Use a longer timeout to test the case that the timer is canceled.
 704   Services.prefs.setIntPref(
 705     "network.dns.httpssvc.http3_fast_fallback_timeout",
 706     5000
 707   );
 708
 709   chan = makeChan(`https://test.fastfallback.com/server-timing`);
 710   [req] = await channelOpenPromise(chan);
 711   Assert.equal(req.protocolVersion, "h2");
 712   internal = req.QueryInterface(Ci.nsIHttpChannelInternal);
 713   Assert.equal(internal.remotePort, h2Port);
 714
 715   await trrServer.stop();
 716 });
 717
 718 // Test when we fail to establish H3 connection.
 719 add_task(async function testFailedH3Connection() {
 720   trrServer = new TRRServer();
 721   await trrServer.start();
 722   Services.dns.clearCache(true);
 723   Services.prefs.setIntPref("network.trr.mode", 3);
 724   Services.prefs.setCharPref(
 725     "network.trr.uri",
 726     `https://foo.example.com:${trrServer.port}/dns-query`
 727   );
 728   Services.prefs.setBoolPref("network.http.http3.enable", true);
 729   Services.prefs.setIntPref(
 730     "network.dns.httpssvc.http3_fast_fallback_timeout",
 731     0
 732   );
 733
 734   await trrServer.registerDoHAnswers("test.h3.org", "HTTPS", {
 735     answers: [
 736       {
 737         name: "test.h3.org",
 738         ttl: 55,
 739         type: "HTTPS",
 740         flush: false,
 741         data: {
 742           priority: 1,
 743           name: "www.h3.org",
 744           values: [
 745             { key: "alpn", value: "h3-29" },
 746             { key: "port", value: h3Port },
 747             { key: "echconfig", value: "456..." },
 748           ],
 749         },
 750       },
 751     ],
 752   });
 753
 754   await new TRRDNSListener("test.h3.org", {
 755     type: Ci.nsIDNSService.RESOLVE_TYPE_HTTPSSVC,
 756   });
 757
 758   let chan = makeChan(`https://test.h3.org`);
 759   await channelOpenPromise(chan, CL_EXPECT_LATE_FAILURE | CL_ALLOW_UNKNOWN_CL);
 760
 761   await trrServer.stop();
 762 });
 763
 764 // Test we don't use the service mode record whose domain is in
 765 // http3 excluded list.
 766 add_task(async function testHttp3ExcludedList() {
 767   trrServer = new TRRServer();
 768   await trrServer.start();
 769   Services.dns.clearCache(true);
 770   Services.prefs.setIntPref("network.trr.mode", 3);
 771   Services.prefs.setCharPref(
 772     "network.trr.uri",
 773     `https://foo.example.com:${trrServer.port}/dns-query`
 774   );
 775   Services.prefs.setBoolPref("network.http.http3.enable", true);
 776   Services.prefs.setIntPref(
 777     "network.dns.httpssvc.http3_fast_fallback_timeout",
 778     0
 779   );
 780
 781   Services.prefs.setCharPref(
 782     "network.http.http3.alt-svc-mapping-for-testing",
 783     "www.h3_fail.org;h3-29=:" + h3Port
 784   );
 785
 786   // This will fail because there is no address record for www.h3_fail.org.
 787   let chan = makeChan(`https://www.h3_fail.org`);
 788   await channelOpenPromise(chan, CL_EXPECT_LATE_FAILURE | CL_ALLOW_UNKNOWN_CL);
 789
 790   // Now www.h3_fail.org should be already excluded, so the second record
 791   // foo.example.com will be selected.
 792   await trrServer.registerDoHAnswers("test.h3_excluded.org", "HTTPS", {
 793     answers: [
 794       {
 795         name: "test.h3_excluded.org",
 796         ttl: 55,
 797         type: "HTTPS",
 798         flush: false,
 799         data: {
 800           priority: 1,
 801           name: "www.h3_fail.org",
 802           values: [
 803             { key: "alpn", value: "h3-29" },
 804             { key: "port", value: h3Port },
 805           ],
 806         },
 807       },
 808       {
 809         name: "test.h3_excluded.org",
 810         ttl: 55,
 811         type: "HTTPS",
 812         flush: false,
 813         data: {
 814           priority: 2,
 815           name: "foo.example.com",
 816           values: [
 817             { key: "alpn", value: "h3-29" },
 818             { key: "port", value: h3Port },
 819           ],
 820         },
 821       },
 822     ],
 823   });
 824
 825   await new TRRDNSListener("test.h3_excluded.org", {
 826     type: Ci.nsIDNSService.RESOLVE_TYPE_HTTPSSVC,
 827   });
 828
 829   chan = makeChan(`https://test.h3_excluded.org`);
 830   let [req] = await channelOpenPromise(chan);
 831   Assert.equal(req.protocolVersion, "h3-29");
 832   let internal = req.QueryInterface(Ci.nsIHttpChannelInternal);
 833   Assert.equal(internal.remotePort, h3Port);
 834
 835   await trrServer.stop();
 836 });
 837
 838 add_task(async function testAllRecordsInHttp3ExcludedList() {
 839   trrServer = new TRRServer();
 840   await trrServer.start();
 841   Services.dns.clearCache(true);
 842   Services.prefs.setIntPref("network.trr.mode", 3);
 843   Services.prefs.setBoolPref("network.dns.http3_echconfig.enabled", true);
 844   Services.prefs.setCharPref(
 845     "network.trr.uri",
 846     `https://foo.example.com:${trrServer.port}/dns-query`
 847   );
 848   Services.prefs.setBoolPref("network.http.http3.enable", true);
 849   Services.prefs.setIntPref(
 850     "network.dns.httpssvc.http3_fast_fallback_timeout",
 851     0
 852   );
 853
 854   Services.prefs.setCharPref(
 855     "network.http.http3.alt-svc-mapping-for-testing",
 856     "www.h3_fail1.org;h3-29=:" + h3Port
 857   );
 858
 859   await trrServer.registerDoHAnswers("www.h3_all_excluded.org", "A", {
 860     answers: [
 861       {
 862         name: "www.h3_all_excluded.org",
 863         ttl: 55,
 864         type: "A",
 865         flush: false,
 866         data: "127.0.0.1",
 867       },
 868     ],
 869   });
 870
 871   // Test we can connect to www.h3_all_excluded.org sucessfully.
 872   let chan = makeChan(
 873     `https://www.h3_all_excluded.org:${h2Port}/server-timing`
 874   );
 875
 876   let [req] = await channelOpenPromise(chan);
 877
 878   // Test if this request is done by h2.
 879   Assert.equal(req.getResponseHeader("x-connection-http2"), "yes");
 880
 881   // This will fail because there is no address record for www.h3_fail1.org.
 882   chan = makeChan(`https://www.h3_fail1.org`);
 883   await channelOpenPromise(chan, CL_EXPECT_LATE_FAILURE | CL_ALLOW_UNKNOWN_CL);
 884
 885   Services.prefs.setCharPref(
 886     "network.http.http3.alt-svc-mapping-for-testing",
 887     "www.h3_fail2.org;h3-29=:" + h3Port
 888   );
 889
 890   // This will fail because there is no address record for www.h3_fail2.org.
 891   chan = makeChan(`https://www.h3_fail2.org`);
 892   await channelOpenPromise(chan, CL_EXPECT_LATE_FAILURE | CL_ALLOW_UNKNOWN_CL);
 893
 894   await trrServer.registerDoHAnswers("www.h3_all_excluded.org", "HTTPS", {
 895     answers: [
 896       {
 897         name: "www.h3_all_excluded.org",
 898         ttl: 55,
 899         type: "HTTPS",
 900         flush: false,
 901         data: {
 902           priority: 1,
 903           name: "www.h3_fail1.org",
 904           values: [
 905             { key: "alpn", value: "h3-29" },
 906             { key: "port", value: h3Port },
 907             { key: "echconfig", value: "456..." },
 908           ],
 909         },
 910       },
 911       {
 912         name: "www.h3_all_excluded.org",
 913         ttl: 55,
 914         type: "HTTPS",
 915         flush: false,
 916         data: {
 917           priority: 2,
 918           name: "www.h3_fail2.org",
 919           values: [
 920             { key: "alpn", value: "h3-29" },
 921             { key: "port", value: h3Port },
 922             { key: "echconfig", value: "456..." },
 923           ],
 924         },
 925       },
 926     ],
 927   });
 928
 929   await new TRRDNSListener("www.h3_all_excluded.org", {
 930     type: Ci.nsIDNSService.RESOLVE_TYPE_HTTPSSVC,
 931   });
 932
 933   Services.dns.clearCache(true);
 934   Services.prefs.setIntPref("network.http.speculative-parallel-limit", 0);
 935   Services.obs.notifyObservers(null, "net:prune-all-connections");
 936
 937   // All HTTPS RRs are in http3 excluded list and all records are failed to
 938   // connect, so don't fallback to the origin one.
 939   chan = makeChan(`https://www.h3_all_excluded.org:${h2Port}/server-timing`);
 940   await channelOpenPromise(chan, CL_EXPECT_LATE_FAILURE | CL_ALLOW_UNKNOWN_CL);
 941
 942   await trrServer.registerDoHAnswers("www.h3_fail1.org", "A", {
 943     answers: [
 944       {
 945         name: "www.h3_fail1.org",
 946         ttl: 55,
 947         type: "A",
 948         flush: false,
 949         data: "127.0.0.1",
 950       },
 951     ],
 952   });
 953
 954   // The the case that when all records are in http3 excluded list, we still
 955   // give the first record one more shot.
 956   chan = makeChan(`https://www.h3_all_excluded.org`);
 957   [req] = await channelOpenPromise(chan);
 958   Assert.equal(req.protocolVersion, "h3-29");
 959   let internal = req.QueryInterface(Ci.nsIHttpChannelInternal);
 960   Assert.equal(internal.remotePort, h3Port);
 961
 962   await trrServer.stop();
 963 });
 964
 965 WebSocketListener.prototype = {
 966   onAcknowledge(aContext, aSize) {},
 967   onBinaryMessageAvailable(aContext, aMsg) {},
 968   onMessageAvailable(aContext, aMsg) {},
 969   onServerClose(aContext, aCode, aReason) {},
 970   onStart(aContext) {
 971     this.finish();
 972   },
 973   onStop(aContext, aStatusCode) {},
 974 };
 975
 976 add_task(async function testUpgradeNotUsingHTTPSRR() {
 977   trrServer = new TRRServer();
 978   await trrServer.start();
 979   Services.prefs.setIntPref("network.trr.mode", 3);
 980   Services.prefs.setCharPref(
 981     "network.trr.uri",
 982     `https://foo.example.com:${trrServer.port}/dns-query`
 983   );
 984
 985   await trrServer.registerDoHAnswers("test.ws.com", "HTTPS", {
 986     answers: [
 987       {
 988         name: "test.ws.com",
 989         ttl: 55,
 990         type: "HTTPS",
 991         flush: false,
 992         data: {
 993           priority: 1,
 994           name: "test.ws1.com",
 995           values: [{ key: "port", value: ["8888"] }],
 996         },
 997       },
 998     ],
 999   });
1000
1001   await new TRRDNSListener("test.ws.com", {
1002     type: Ci.nsIDNSService.RESOLVE_TYPE_HTTPSSVC,
1003   });
1004
1005   await trrServer.registerDoHAnswers("test.ws.com", "A", {
1006     answers: [
1007       {
1008         name: "test.ws.com",
1009         ttl: 55,
1010         type: "A",
1011         flush: false,
1012         data: "127.0.0.1",
1013       },
1014     ],
1015   });
1016
1017   let wssUri = "wss://test.ws.com:" + h2Port + "/websocket";
1018   let chan = Cc["@mozilla.org/network/protocol;1?name=wss"].createInstance(
1019     Ci.nsIWebSocketChannel
1020   );
1021   chan.initLoadInfo(
1022     null, // aLoadingNode
1023     Services.scriptSecurityManager.getSystemPrincipal(),
1024     null, // aTriggeringPrincipal
1025     Ci.nsILoadInfo.SEC_ALLOW_CROSS_ORIGIN_SEC_CONTEXT_IS_NULL,
1026     Ci.nsIContentPolicy.TYPE_DOCUMENT
1027   );
1028
1029   var uri = Services.io.newURI(wssUri);
1030   var wsListener = new WebSocketListener();
1031   certOverrideService.setDisableAllSecurityChecksAndLetAttackersInterceptMyData(
1032     false
1033   );
1034   await new Promise(resolve => {
1035     wsListener.finish = resolve;
1036     chan.asyncOpen(uri, wssUri, {}, 0, wsListener, null);
1037     certOverrideService.setDisableAllSecurityChecksAndLetAttackersInterceptMyData(
1038       true
1039     );
1040   });
1041
1042   await trrServer.stop();
1043 });
1044
1045 // Test if we fallback to h2 with echConfig.
1046 add_task(async function testFallbackToH2WithEchConfig() {
1047   trrServer = new TRRServer();
1048   await trrServer.start();
1049   Services.dns.clearCache(true);
1050   Services.prefs.setIntPref("network.trr.mode", 3);
1051   Services.prefs.setCharPref(
1052     "network.trr.uri",
1053     `https://foo.example.com:${trrServer.port}/dns-query`
1054   );
1055   Services.prefs.setBoolPref("network.http.http3.enable", true);
1056   Services.prefs.setIntPref(
1057     "network.dns.httpssvc.http3_fast_fallback_timeout",
1058     0
1059   );
1060
1061   await trrServer.registerDoHAnswers("test.fallback.org", "HTTPS", {
1062     answers: [
1063       {
1064         name: "test.fallback.org",
1065         ttl: 55,
1066         type: "HTTPS",
1067         flush: false,
1068         data: {
1069           priority: 1,
1070           name: "test.fallback.org",
1071           values: [
1072             { key: "alpn", value: ["h2", "h3-29"] },
1073             { key: "port", value: h2Port },
1074             { key: "echconfig", value: "456..." },
1075           ],
1076         },
1077       },
1078     ],
1079   });
1080
1081   await trrServer.registerDoHAnswers("test.fallback.org", "A", {
1082     answers: [
1083       {
1084         name: "test.fallback.org",
1085         ttl: 55,
1086         type: "A",
1087         flush: false,
1088         data: "127.0.0.1",
1089       },
1090     ],
1091   });
1092
1093   await new TRRDNSListener("test.fallback.org", {
1094     type: Ci.nsIDNSService.RESOLVE_TYPE_HTTPSSVC,
1095   });
1096
1097   await new TRRDNSListener("test.fallback.org", "127.0.0.1");
1098
1099   let chan = makeChan(`https://test.fallback.org/server-timing`);
1100   let [req] = await channelOpenPromise(chan);
1101   // Test if this request is done by h2.
1102   Assert.equal(req.getResponseHeader("x-connection-http2"), "yes");
1103
1104   await trrServer.stop();
1105 });