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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/base_switches.h"
#include "base/test/bind.h"
#include "base/test/metrics/histogram_tester.h"
#include "base/test/scoped_feature_list.h"
#include "components/network_session_configurator/common/network_switches.h"
#include "content/public/test/browser_test.h"
#include "content/public/test/browser_test_utils.h"
#include "content/public/test/content_browser_test.h"
#include "content/public/test/content_browser_test_utils.h"
#include "content/public/test/content_mock_cert_verifier.h"
#include "net/android/network_change_notifier_delegate_android.h"
#include "net/android/network_library.h"
#include "net/base/features.h"
#include "net/base/network_change_notifier.h"
#include "net/dns/mock_host_resolver.h"
#include "net/quic/quic_chromium_client_session.h"
#include "net/test/cert_test_util.h"
#include "net/test/quic_simple_test_server.h"
#include "net/test/test_data_directory.h"
#include "net/third_party/quiche/src/quiche/common/http/http_header_block.h"
namespace content {
namespace {
class ScopedNetworkChangeWaiter
: public net::NetworkChangeNotifier::NetworkChangeObserver {
public:
ScopedNetworkChangeWaiter() {
net::NetworkChangeNotifier::AddNetworkChangeObserver(this);
if (!observed_) {
run_loop_.Run();
}
}
~ScopedNetworkChangeWaiter() override {
net::NetworkChangeNotifier::RemoveNetworkChangeObserver(this);
}
private:
void OnNetworkChanged(
net::NetworkChangeNotifier::ConnectionType type) override {
observed_ = true;
run_loop_.Quit();
}
bool observed_ = false;
base::RunLoop run_loop_;
};
void WaitForNetworkChange() {
ScopedNetworkChangeWaiter waiter;
}
} // namespace
class QuicConnectionMigrationTest : public ContentBrowserTest {
public:
QuicConnectionMigrationTest() {
feature_list_.InitWithFeatures(
// Enabled features
{net::features::kQuicMigrationIgnoreDisconnectSignalDuringProbing},
// Disabled features
{});
}
~QuicConnectionMigrationTest() override = default;
void SetUpOnMainThread() override {
ContentBrowserTest::SetUpOnMainThread();
// Configure mock cert verifier.
auto test_cert =
net::ImportCertFromFile(net::GetTestCertsDirectory(), "quic-chain.pem");
net::CertVerifyResult verify_result;
verify_result.verified_cert = test_cert;
mock_cert_verifier_.mock_cert_verifier()->AddResultForCert(
test_cert, verify_result, net::OK);
mock_cert_verifier_.mock_cert_verifier()->set_default_result(net::OK);
host_resolver()->AddRule("*", "127.0.0.1");
net::NetworkChangeNotifierDelegateAndroid::
EnableNetworkChangeNotifierAutoDetectForTest();
WaitForNetworkChange();
}
void SetUpCommandLine(base::CommandLine* command_line) override {
command_line->AppendSwitchASCII(switches::kOriginToForceQuicOn, "*");
command_line->AppendSwitchASCII(switches::kForceFieldTrials,
"QUIC/Enabled");
mock_cert_verifier_.SetUpCommandLine(command_line);
ASSERT_TRUE(net::QuicSimpleTestServer::Start());
// Set up a test page that fetches a resource.
quiche::HttpHeaderBlock headers;
headers[":status"] = "200";
headers["content-type"] = "text/html";
const std::string body = R"(
<script>
const response = fetch('/simple.txt').then(res => res.text());
</script>
)";
net::QuicSimpleTestServer::AddResponse("/test.html", std::move(headers),
body);
// Configure the resource to be delayed so that we can trigger connection
// migrations while fetching the resource.
net::QuicSimpleTestServer::SetResponseDelay("/simple.txt",
base::Seconds(2));
}
void TearDown() override {
base::ScopedAllowBaseSyncPrimitivesForTesting allow_wait;
net::QuicSimpleTestServer::Shutdown();
ContentBrowserTest::TearDown();
}
protected:
void SetUpInProcessBrowserTestFixture() override {
mock_cert_verifier_.SetUpInProcessBrowserTestFixture();
}
void TearDownInProcessBrowserTestFixture() override {
mock_cert_verifier_.TearDownInProcessBrowserTestFixture();
}
bool EnsureWifiEnabled() {
if (net::NetworkChangeNotifier::IsOffline()) {
return false;
}
std::string wifi_ssid = net::android::GetWifiSSID();
if (!wifi_ssid.empty()) {
return true;
}
net::android::SetWifiEnabledForTesting(true);
WaitForNetworkChange();
wifi_ssid = net::android::GetWifiSSID();
return !wifi_ssid.empty();
}
GURL GetTestPageUrl() {
return net::QuicSimpleTestServer::GetFileURL("/test.html");
}
EvalJsResult ResolveDelayedResponse() { return EvalJs(shell(), "response"); }
private:
base::test::ScopedFeatureList feature_list_;
ContentMockCertVerifier mock_cert_verifier_;
};
// Currently trybots skip this test because trybots disabled real networks.
// TODO(crbug.com/40282869): Run this test once the infra
// supports enabling networks.
IN_PROC_BROWSER_TEST_F(QuicConnectionMigrationTest, Basic) {
if (!EnsureWifiEnabled()) {
GTEST_SKIP() << "This test requires wifi network.";
}
base::HistogramTester histograms;
ASSERT_TRUE(NavigateToURL(shell(), GetTestPageUrl()));
net::android::SetWifiEnabledForTesting(false);
WaitForNetworkChange();
EvalJsResult result = ResolveDelayedResponse();
ASSERT_EQ(result, "Simple Hello from QUIC Server");
FetchHistogramsFromChildProcesses();
ASSERT_GE(histograms.GetBucketCount(
"Net.QuicSession.ConnectionMigration",
net::QuicConnectionMigrationStatus::MIGRATION_STATUS_SUCCESS),
1);
}
// Currently trybots skip this test because trybots disabled real networks.
// TODO(crbug.com/40282869): Run this test once the infra
// supports enabling networks.
IN_PROC_BROWSER_TEST_F(QuicConnectionMigrationTest,
ConnectionCloseDuringMigration) {
if (!EnsureWifiEnabled()) {
GTEST_SKIP() << "This test requires wifi network.";
}
base::HistogramTester histograms;
// This will close all connections in the middle of a connection migration.
net::QuicChromiumClientSession::SetMidMigrationCallbackForTesting(
base::BindLambdaForTesting(
[]() { net::QuicSimpleTestServer::ShutdownDispatcherForTesting(); }));
ASSERT_TRUE(NavigateToURL(shell(), GetTestPageUrl()));
net::android::SetWifiEnabledForTesting(false);
WaitForNetworkChange();
// The subresource fetch should fail because the server closed the connection
// and retry is disabled.
EvalJsResult result = ResolveDelayedResponse();
EXPECT_FALSE(result.error.empty());
EXPECT_EQ(histograms.GetTotalSum("Net.QuicProtocolError.RetryStatus"), 0);
FetchHistogramsFromChildProcesses();
ASSERT_EQ(histograms.GetBucketCount(
"Net.QuicSession.ConnectionMigration",
net::QuicConnectionMigrationStatus::MIGRATION_STATUS_SUCCESS),
0);
}
} // namespace content
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