diff options
Diffstat (limited to 'netwerk/test/unit/test_http3_fast_fallback.js')
| -rw-r--r-- | netwerk/test/unit/test_http3_fast_fallback.js | 908 |
1 files changed, 908 insertions, 0 deletions
diff --git a/netwerk/test/unit/test_http3_fast_fallback.js b/netwerk/test/unit/test_http3_fast_fallback.js new file mode 100644 index 0000000000..ab2b6b7044 --- /dev/null +++ b/netwerk/test/unit/test_http3_fast_fallback.js @@ -0,0 +1,908 @@ +/* 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"; + +var { setTimeout } = ChromeUtils.importESModule( + "resource://gre/modules/Timer.sys.mjs" +); + +let h2Port; +let h3Port; +let trrServer; + +const { TestUtils } = ChromeUtils.importESModule( + "resource://testing-common/TestUtils.sys.mjs" +); +const certOverrideService = Cc[ + "@mozilla.org/security/certoverride;1" +].getService(Ci.nsICertOverrideService); + +add_setup(async function setup() { + h2Port = Services.env.get("MOZHTTP2_PORT"); + Assert.notEqual(h2Port, null); + Assert.notEqual(h2Port, ""); + + h3Port = Services.env.get("MOZHTTP3_PORT_NO_RESPONSE"); + Assert.notEqual(h3Port, null); + Assert.notEqual(h3Port, ""); + + trr_test_setup(); + + if (mozinfo.socketprocess_networking) { + Services.dns; // Needed to trigger socket process. + await TestUtils.waitForCondition(() => Services.io.socketProcessLaunched); + } + + Services.prefs.setIntPref("network.trr.mode", 2); // TRR first + Services.prefs.setBoolPref("network.http.http3.enable", true); + Services.prefs.setIntPref("network.http.speculative-parallel-limit", 6); + + registerCleanupFunction(async () => { + trr_clear_prefs(); + Services.prefs.clearUserPref("network.dns.upgrade_with_https_rr"); + Services.prefs.clearUserPref("network.dns.use_https_rr_as_altsvc"); + Services.prefs.clearUserPref("network.dns.echconfig.enabled"); + Services.prefs.clearUserPref("network.dns.http3_echconfig.enabled"); + Services.prefs.clearUserPref( + "network.dns.echconfig.fallback_to_origin_when_all_failed" + ); + Services.prefs.clearUserPref("network.dns.httpssvc.reset_exclustion_list"); + Services.prefs.clearUserPref("network.http.http3.enable"); + Services.prefs.clearUserPref( + "network.dns.httpssvc.http3_fast_fallback_timeout" + ); + Services.prefs.clearUserPref( + "network.http.http3.alt-svc-mapping-for-testing" + ); + Services.prefs.clearUserPref("network.http.http3.backup_timer_delay"); + Services.prefs.clearUserPref("network.http.speculative-parallel-limit"); + Services.prefs.clearUserPref( + "network.http.http3.parallel_fallback_conn_limit" + ); + if (trrServer) { + await trrServer.stop(); + } + }); +}); + +function makeChan(url) { + let chan = NetUtil.newChannel({ + uri: url, + loadUsingSystemPrincipal: true, + contentPolicyType: Ci.nsIContentPolicy.TYPE_DOCUMENT, + }).QueryInterface(Ci.nsIHttpChannel); + chan.loadFlags = Ci.nsIChannel.LOAD_INITIAL_DOCUMENT_URI; + return chan; +} + +function channelOpenPromise(chan, flags, delay) { + // eslint-disable-next-line no-async-promise-executor + return new Promise(async resolve => { + function finish(req, buffer) { + resolve([req, buffer]); + certOverrideService.setDisableAllSecurityChecksAndLetAttackersInterceptMyData( + false + ); + } + let internal = chan.QueryInterface(Ci.nsIHttpChannelInternal); + internal.setWaitForHTTPSSVCRecord(); + certOverrideService.setDisableAllSecurityChecksAndLetAttackersInterceptMyData( + true + ); + if (delay) { + // eslint-disable-next-line mozilla/no-arbitrary-setTimeout + await new Promise(r => setTimeout(r, delay)); + } + chan.asyncOpen(new ChannelListener(finish, null, flags)); + }); +} + +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"); + + let routed = "NA"; + try { + routed = request.getRequestHeader("Alt-Used"); + } catch (e) {} + dump("routed is " + routed + "\n"); + Assert.ok(routed === "0" || routed === "NA"); + this.finish(); + }, +}; + +async function fast_fallback_test() { + 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(`https://foo.example.com:${h2Port}/`); + let listener = new CheckOnlyHttp2Listener(); + await altsvcSetupPromise(chan, listener); + result++; + } while (result < 3); +} + +// Test the case when speculative connection is enabled. In this case, when the +// backup connection is ready, the http transaction is still in pending +// queue because the h3 connection is never ready to accept transactions. +add_task(async function test_fast_fallback_with_speculative_connection() { + Services.prefs.setBoolPref("network.http.http3.enable", true); + Services.prefs.setCharPref("network.dns.localDomains", "foo.example.com"); + // 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;h3-29=:" + h3Port + ); + Services.prefs.setBoolPref("network.dns.disableIPv6", true); + Services.prefs.setIntPref("network.http.speculative-parallel-limit", 6); + + await fast_fallback_test(); +}); + +// Test the case when speculative connection is disabled. In this case, when the +// back connection is ready, the http transaction is already activated, +// but the socket is not ready to write. +add_task(async function test_fast_fallback_without_speculative_connection() { + // Make sure the h3 connection created by the previous test is cleared. + Services.obs.notifyObservers(null, "net:cancel-all-connections"); + // eslint-disable-next-line mozilla/no-arbitrary-setTimeout + await new Promise(resolve => setTimeout(resolve, 1000)); + // Clear the h3 excluded list, otherwise the Alt-Svc mapping will not be used. + Services.obs.notifyObservers(null, "network:reset-http3-excluded-list"); + Services.prefs.setIntPref("network.http.speculative-parallel-limit", 0); + + await fast_fallback_test(); + + Services.prefs.clearUserPref( + "network.http.http3.alt-svc-mapping-for-testing" + ); +}); + +// Test when echConfig is disabled and we have https rr for http3. We use a +// longer timeout in this test, so when fast fallback timer is triggered, the +// http transaction is already activated. +add_task(async function testFastfallback() { + trrServer = new TRRServer(); + await trrServer.start(); + Services.prefs.setBoolPref("network.dns.upgrade_with_https_rr", true); + Services.prefs.setBoolPref("network.dns.use_https_rr_as_altsvc", true); + Services.prefs.setBoolPref("network.dns.echconfig.enabled", false); + + Services.prefs.setIntPref("network.trr.mode", 3); + Services.prefs.setCharPref( + "network.trr.uri", + `https://foo.example.com:${trrServer.port()}/dns-query` + ); + Services.prefs.setBoolPref("network.http.http3.enable", true); + + Services.prefs.setIntPref( + "network.dns.httpssvc.http3_fast_fallback_timeout", + 1000 + ); + + await trrServer.registerDoHAnswers("test.fastfallback.com", "HTTPS", { + answers: [ + { + name: "test.fastfallback.com", + ttl: 55, + type: "HTTPS", + flush: false, + data: { + priority: 1, + name: "test.fastfallback1.com", + values: [ + { key: "alpn", value: "h3-29" }, + { key: "port", value: h3Port }, + { key: "echconfig", value: "456..." }, + ], + }, + }, + { + name: "test.fastfallback.com", + ttl: 55, + type: "HTTPS", + flush: false, + data: { + priority: 2, + name: "test.fastfallback2.com", + values: [ + { key: "alpn", value: "h2" }, + { key: "port", value: h2Port }, + { key: "echconfig", value: "456..." }, + ], + }, + }, + ], + }); + + await trrServer.registerDoHAnswers("test.fastfallback1.com", "A", { + answers: [ + { + name: "test.fastfallback1.com", + ttl: 55, + type: "A", + flush: false, + data: "127.0.0.1", + }, + ], + }); + + await trrServer.registerDoHAnswers("test.fastfallback2.com", "A", { + answers: [ + { + name: "test.fastfallback2.com", + ttl: 55, + type: "A", + flush: false, + data: "127.0.0.1", + }, + ], + }); + + let chan = makeChan(`https://test.fastfallback.com/server-timing`); + let [req] = await channelOpenPromise(chan); + Assert.equal(req.protocolVersion, "h2"); + let internal = req.QueryInterface(Ci.nsIHttpChannelInternal); + Assert.equal(internal.remotePort, h2Port); + + await trrServer.stop(); +}); + +// Like the previous test, but with a shorter timeout, so when fast fallback +// timer is triggered, the http transaction is still in pending queue. +add_task(async function testFastfallback1() { + trrServer = new TRRServer(); + await trrServer.start(); + Services.prefs.setBoolPref("network.dns.upgrade_with_https_rr", true); + Services.prefs.setBoolPref("network.dns.use_https_rr_as_altsvc", true); + Services.prefs.setBoolPref("network.dns.echconfig.enabled", false); + + Services.prefs.setIntPref("network.trr.mode", 3); + Services.prefs.setCharPref( + "network.trr.uri", + `https://foo.example.com:${trrServer.port()}/dns-query` + ); + Services.prefs.setBoolPref("network.http.http3.enable", true); + + Services.prefs.setIntPref( + "network.dns.httpssvc.http3_fast_fallback_timeout", + 10 + ); + + await trrServer.registerDoHAnswers("test.fastfallback.org", "HTTPS", { + answers: [ + { + name: "test.fastfallback.org", + ttl: 55, + type: "HTTPS", + flush: false, + data: { + priority: 1, + name: "test.fastfallback1.org", + values: [ + { key: "alpn", value: "h3-29" }, + { key: "port", value: h3Port }, + { key: "echconfig", value: "456..." }, + ], + }, + }, + { + name: "test.fastfallback.org", + ttl: 55, + type: "HTTPS", + flush: false, + data: { + priority: 2, + name: "test.fastfallback2.org", + values: [ + { key: "alpn", value: "h2" }, + { key: "port", value: h2Port }, + { key: "echconfig", value: "456..." }, + ], + }, + }, + ], + }); + + await trrServer.registerDoHAnswers("test.fastfallback1.org", "A", { + answers: [ + { + name: "test.fastfallback1.org", + ttl: 55, + type: "A", + flush: false, + data: "127.0.0.1", + }, + ], + }); + + await trrServer.registerDoHAnswers("test.fastfallback2.org", "A", { + answers: [ + { + name: "test.fastfallback2.org", + ttl: 55, + type: "A", + flush: false, + data: "127.0.0.1", + }, + ], + }); + + let chan = makeChan(`https://test.fastfallback.org/server-timing`); + let [req] = await channelOpenPromise(chan); + Assert.equal(req.protocolVersion, "h2"); + let internal = req.QueryInterface(Ci.nsIHttpChannelInternal); + Assert.equal(internal.remotePort, h2Port); + + await trrServer.stop(); +}); + +// Test when echConfig is enabled, we can sucessfully fallback to the last +// record. +add_task(async function testFastfallbackWithEchConfig() { + trrServer = new TRRServer(); + await trrServer.start(); + Services.prefs.setBoolPref("network.dns.upgrade_with_https_rr", true); + Services.prefs.setBoolPref("network.dns.use_https_rr_as_altsvc", true); + Services.prefs.setBoolPref("network.dns.echconfig.enabled", true); + Services.prefs.setBoolPref("network.dns.http3_echconfig.enabled", true); + + Services.prefs.setIntPref("network.trr.mode", 3); + Services.prefs.setCharPref( + "network.trr.uri", + `https://foo.example.com:${trrServer.port()}/dns-query` + ); + Services.prefs.setBoolPref("network.http.http3.enable", true); + + Services.prefs.setIntPref( + "network.dns.httpssvc.http3_fast_fallback_timeout", + 50 + ); + + await trrServer.registerDoHAnswers("test.ech.org", "HTTPS", { + answers: [ + { + name: "test.ech.org", + ttl: 55, + type: "HTTPS", + flush: false, + data: { + priority: 1, + name: "test.ech1.org", + values: [ + { key: "alpn", value: "h3-29" }, + { key: "port", value: h3Port }, + { key: "echconfig", value: "456..." }, + ], + }, + }, + { + name: "test.ech.org", + ttl: 55, + type: "HTTPS", + flush: false, + data: { + priority: 2, + name: "test.ech2.org", + values: [ + { key: "alpn", value: "h2" }, + { key: "port", value: h2Port }, + { key: "echconfig", value: "456..." }, + ], + }, + }, + { + name: "test.ech.org", + ttl: 55, + type: "HTTPS", + flush: false, + data: { + priority: 3, + name: "test.ech3.org", + values: [ + { key: "alpn", value: "h2" }, + { key: "port", value: h2Port }, + { key: "echconfig", value: "456..." }, + ], + }, + }, + ], + }); + + await trrServer.registerDoHAnswers("test.ech1.org", "A", { + answers: [ + { + name: "test.ech1.org", + ttl: 55, + type: "A", + flush: false, + data: "127.0.0.1", + }, + ], + }); + + await trrServer.registerDoHAnswers("test.ech3.org", "A", { + answers: [ + { + name: "test.ech3.org", + ttl: 55, + type: "A", + flush: false, + data: "127.0.0.1", + }, + ], + }); + + let chan = makeChan(`https://test.ech.org/server-timing`); + let [req] = await channelOpenPromise(chan); + Assert.equal(req.protocolVersion, "h2"); + let internal = req.QueryInterface(Ci.nsIHttpChannelInternal); + Assert.equal(internal.remotePort, h2Port); + + await trrServer.stop(); +}); + +// Test when echConfig is enabled, the connection should fail when not all +// records have echConfig. +add_task(async function testFastfallbackWithpartialEchConfig() { + trrServer = new TRRServer(); + await trrServer.start(); + Services.prefs.setBoolPref("network.dns.upgrade_with_https_rr", true); + Services.prefs.setBoolPref("network.dns.use_https_rr_as_altsvc", true); + Services.prefs.setBoolPref("network.dns.echconfig.enabled", true); + Services.prefs.setBoolPref("network.dns.http3_echconfig.enabled", true); + + Services.prefs.setIntPref("network.trr.mode", 3); + Services.prefs.setCharPref( + "network.trr.uri", + `https://foo.example.com:${trrServer.port()}/dns-query` + ); + Services.prefs.setBoolPref("network.http.http3.enable", true); + + Services.prefs.setIntPref( + "network.dns.httpssvc.http3_fast_fallback_timeout", + 50 + ); + + await trrServer.registerDoHAnswers("test.partial_ech.org", "HTTPS", { + answers: [ + { + name: "test.partial_ech.org", + ttl: 55, + type: "HTTPS", + flush: false, + data: { + priority: 1, + name: "test.partial_ech1.org", + values: [ + { key: "alpn", value: "h3-29" }, + { key: "port", value: h3Port }, + { key: "echconfig", value: "456..." }, + ], + }, + }, + { + name: "test.partial_ech.org", + ttl: 55, + type: "HTTPS", + flush: false, + data: { + priority: 2, + name: "test.partial_ech2.org", + values: [ + { key: "alpn", value: "h2" }, + { key: "port", value: h2Port }, + ], + }, + }, + ], + }); + + await trrServer.registerDoHAnswers("test.partial_ech1.org", "A", { + answers: [ + { + name: "test.partial_ech1.org", + ttl: 55, + type: "A", + flush: false, + data: "127.0.0.1", + }, + ], + }); + + await trrServer.registerDoHAnswers("test.partial_ech2.org", "A", { + answers: [ + { + name: "test.partial_ech2.org", + ttl: 55, + type: "A", + flush: false, + data: "127.0.0.1", + }, + ], + }); + + let chan = makeChan(`https://test.partial_ech.org/server-timing`); + await channelOpenPromise(chan, CL_EXPECT_LATE_FAILURE | CL_ALLOW_UNKNOWN_CL); + + await trrServer.stop(); +}); + +add_task(async function testFastfallbackWithoutEchConfig() { + trrServer = new TRRServer(); + await trrServer.start(); + Services.prefs.setBoolPref("network.dns.upgrade_with_https_rr", true); + Services.prefs.setBoolPref("network.dns.use_https_rr_as_altsvc", true); + + Services.prefs.setIntPref("network.trr.mode", 3); + Services.prefs.setCharPref( + "network.trr.uri", + `https://foo.example.com:${trrServer.port()}/dns-query` + ); + Services.prefs.setBoolPref("network.http.http3.enable", true); + + Services.prefs.setIntPref( + "network.dns.httpssvc.http3_fast_fallback_timeout", + 50 + ); + + await trrServer.registerDoHAnswers("test.no_ech_h2.org", "HTTPS", { + answers: [ + { + name: "test.no_ech_h2.org", + ttl: 55, + type: "HTTPS", + flush: false, + data: { + priority: 1, + name: "test.no_ech_h3.org", + values: [ + { key: "alpn", value: "h3-29" }, + { key: "port", value: h3Port }, + ], + }, + }, + ], + }); + + await trrServer.registerDoHAnswers("test.no_ech_h3.org", "A", { + answers: [ + { + name: "test.no_ech_h3.org", + ttl: 55, + type: "A", + flush: false, + data: "127.0.0.1", + }, + ], + }); + + await trrServer.registerDoHAnswers("test.no_ech_h2.org", "A", { + answers: [ + { + name: "test.no_ech_h2.org", + ttl: 55, + type: "A", + flush: false, + data: "127.0.0.1", + }, + ], + }); + + let chan = makeChan(`https://test.no_ech_h2.org:${h2Port}/server-timing`); + let [req] = await channelOpenPromise(chan); + Assert.equal(req.protocolVersion, "h2"); + let internal = req.QueryInterface(Ci.nsIHttpChannelInternal); + Assert.equal(internal.remotePort, h2Port); + + await trrServer.stop(); +}); + +add_task(async function testH3FallbackWithMultipleTransactions() { + trrServer = new TRRServer(); + await trrServer.start(); + Services.prefs.setBoolPref("network.dns.upgrade_with_https_rr", true); + Services.prefs.setBoolPref("network.dns.use_https_rr_as_altsvc", true); + Services.prefs.setBoolPref("network.dns.echconfig.enabled", false); + + Services.prefs.setIntPref("network.trr.mode", 3); + Services.prefs.setCharPref( + "network.trr.uri", + `https://foo.example.com:${trrServer.port()}/dns-query` + ); + Services.prefs.setBoolPref("network.http.http3.enable", true); + + // Disable fast fallback. + Services.prefs.setIntPref( + "network.http.http3.parallel_fallback_conn_limit", + 0 + ); + Services.prefs.setIntPref("network.http.speculative-parallel-limit", 0); + + await trrServer.registerDoHAnswers("test.multiple_trans.org", "HTTPS", { + answers: [ + { + name: "test.multiple_trans.org", + ttl: 55, + type: "HTTPS", + flush: false, + data: { + priority: 1, + name: "test.multiple_trans.org", + values: [ + { key: "alpn", value: "h3-29" }, + { key: "port", value: h3Port }, + ], + }, + }, + ], + }); + + await trrServer.registerDoHAnswers("test.multiple_trans.org", "A", { + answers: [ + { + name: "test.multiple_trans.org", + ttl: 55, + type: "A", + flush: false, + data: "127.0.0.1", + }, + ], + }); + + let promises = []; + for (let i = 0; i < 2; ++i) { + let chan = makeChan( + `https://test.multiple_trans.org:${h2Port}/server-timing` + ); + promises.push(channelOpenPromise(chan)); + } + + let res = await Promise.all(promises); + res.forEach(function (e) { + let [req] = e; + Assert.equal(req.protocolVersion, "h2"); + let internal = req.QueryInterface(Ci.nsIHttpChannelInternal); + Assert.equal(internal.remotePort, h2Port); + }); + + await trrServer.stop(); +}); + +add_task(async function testTwoFastFallbackTimers() { + trrServer = new TRRServer(); + await trrServer.start(); + Services.prefs.setBoolPref("network.dns.upgrade_with_https_rr", true); + Services.prefs.setBoolPref("network.dns.use_https_rr_as_altsvc", true); + Services.prefs.setBoolPref("network.dns.echconfig.enabled", false); + + Services.prefs.setIntPref("network.trr.mode", 3); + Services.prefs.setCharPref( + "network.trr.uri", + `https://foo.example.com:${trrServer.port()}/dns-query` + ); + Services.prefs.setBoolPref("network.http.http3.enable", true); + + Services.prefs.setIntPref("network.http.speculative-parallel-limit", 6); + Services.prefs.clearUserPref( + "network.http.http3.parallel_fallback_conn_limit" + ); + + Services.prefs.setCharPref( + "network.http.http3.alt-svc-mapping-for-testing", + "foo.fallback.org;h3-29=:" + h3Port + ); + + Services.prefs.setIntPref( + "network.dns.httpssvc.http3_fast_fallback_timeout", + 10 + ); + Services.prefs.setIntPref("network.http.http3.backup_timer_delay", 100); + + await trrServer.registerDoHAnswers("foo.fallback.org", "HTTPS", { + answers: [ + { + name: "foo.fallback.org", + ttl: 55, + type: "HTTPS", + flush: false, + data: { + priority: 1, + name: "foo.fallback.org", + values: [ + { key: "alpn", value: "h3-29" }, + { key: "port", value: h3Port }, + ], + }, + }, + ], + }); + + await trrServer.registerDoHAnswers("foo.fallback.org", "A", { + answers: [ + { + name: "foo.fallback.org", + ttl: 55, + type: "A", + flush: false, + data: "127.0.0.1", + }, + ], + }); + + // Test the case that http3 backup timer is triggered after + // fast fallback timer or HTTPS RR. + Services.prefs.setIntPref( + "network.dns.httpssvc.http3_fast_fallback_timeout", + 10 + ); + Services.prefs.setIntPref("network.http.http3.backup_timer_delay", 100); + + async function createChannelAndStartTest() { + let chan = makeChan(`https://foo.fallback.org:${h2Port}/server-timing`); + let [req] = await channelOpenPromise(chan); + Assert.equal(req.protocolVersion, "h2"); + let internal = req.QueryInterface(Ci.nsIHttpChannelInternal); + Assert.equal(internal.remotePort, h2Port); + } + + await createChannelAndStartTest(); + + Services.obs.notifyObservers(null, "net:prune-all-connections"); + Services.obs.notifyObservers(null, "network:reset-http3-excluded-list"); + Services.dns.clearCache(true); + + // Do the same test again, but with a different configuration. + Services.prefs.setIntPref( + "network.dns.httpssvc.http3_fast_fallback_timeout", + 100 + ); + Services.prefs.setIntPref("network.http.http3.backup_timer_delay", 10); + + await createChannelAndStartTest(); + + await trrServer.stop(); +}); + +add_task(async function testH3FastFallbackWithMultipleTransactions() { + trrServer = new TRRServer(); + await trrServer.start(); + Services.prefs.setBoolPref("network.dns.upgrade_with_https_rr", true); + Services.prefs.setBoolPref("network.dns.use_https_rr_as_altsvc", true); + Services.prefs.setBoolPref("network.dns.echconfig.enabled", false); + + Services.prefs.setIntPref("network.trr.mode", 3); + Services.prefs.setCharPref( + "network.trr.uri", + `https://foo.example.com:${trrServer.port()}/dns-query` + ); + Services.prefs.setBoolPref("network.http.http3.enable", true); + + Services.prefs.setIntPref("network.http.speculative-parallel-limit", 6); + Services.prefs.clearUserPref( + "network.http.http3.parallel_fallback_conn_limit" + ); + + Services.prefs.setIntPref("network.http.http3.backup_timer_delay", 500); + + Services.prefs.setCharPref( + "network.http.http3.alt-svc-mapping-for-testing", + "test.multiple_fallback_trans.org;h3-29=:" + h3Port + ); + + await trrServer.registerDoHAnswers("test.multiple_fallback_trans.org", "A", { + answers: [ + { + name: "test.multiple_fallback_trans.org", + ttl: 55, + type: "A", + flush: false, + data: "127.0.0.1", + }, + ], + }); + + let promises = []; + for (let i = 0; i < 3; ++i) { + let chan = makeChan( + `https://test.multiple_fallback_trans.org:${h2Port}/server-timing` + ); + if (i == 0) { + promises.push(channelOpenPromise(chan)); + } else { + promises.push(channelOpenPromise(chan, null, 500)); + } + } + + let res = await Promise.all(promises); + res.forEach(function (e) { + let [req] = e; + Assert.equal(req.protocolVersion, "h2"); + let internal = req.QueryInterface(Ci.nsIHttpChannelInternal); + Assert.equal(internal.remotePort, h2Port); + }); + + await trrServer.stop(); +}); + +add_task(async function testFastfallbackToTheSameRecord() { + trrServer = new TRRServer(); + await trrServer.start(); + Services.prefs.setBoolPref("network.dns.upgrade_with_https_rr", true); + Services.prefs.setBoolPref("network.dns.use_https_rr_as_altsvc", true); + Services.prefs.setBoolPref("network.dns.echconfig.enabled", true); + Services.prefs.setBoolPref("network.dns.http3_echconfig.enabled", true); + + Services.prefs.setIntPref("network.trr.mode", 3); + Services.prefs.setCharPref( + "network.trr.uri", + `https://foo.example.com:${trrServer.port()}/dns-query` + ); + Services.prefs.setBoolPref("network.http.http3.enable", true); + + Services.prefs.setIntPref( + "network.dns.httpssvc.http3_fast_fallback_timeout", + 1000 + ); + + await trrServer.registerDoHAnswers("test.ech.org", "HTTPS", { + answers: [ + { + name: "test.ech.org", + ttl: 55, + type: "HTTPS", + flush: false, + data: { + priority: 1, + name: "test.ech1.org", + values: [ + { key: "alpn", value: ["h3-29", "h2"] }, + { key: "port", value: h2Port }, + { key: "echconfig", value: "456..." }, + ], + }, + }, + ], + }); + + await trrServer.registerDoHAnswers("test.ech1.org", "A", { + answers: [ + { + name: "test.ech1.org", + ttl: 55, + type: "A", + flush: false, + data: "127.0.0.1", + }, + ], + }); + + let chan = makeChan(`https://test.ech.org/server-timing`); + let [req] = await channelOpenPromise(chan); + Assert.equal(req.protocolVersion, "h2"); + let internal = req.QueryInterface(Ci.nsIHttpChannelInternal); + Assert.equal(internal.remotePort, h2Port); + + await trrServer.stop(); +}); |