net/url_request/http_with_dns_over_https_unittest.cc - chromium/src.git - Git at Google

 // Copyright 2018 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.

 #include "base/big_endian.h"
 #include "base/bind.h"
 #include "base/memory/scoped_refptr.h"
 #include "net/base/privacy_mode.h"
 #include "net/base/proxy_server.h"
 #include "net/cert/mock_cert_verifier.h"
 #include "net/dns/context_host_resolver.h"
 #include "net/dns/dns_client.h"
 #include "net/dns/dns_config.h"
 #include "net/dns/dns_query.h"
 #include "net/dns/dns_transaction.h"
 #include "net/dns/host_resolver.h"
 #include "net/dns/host_resolver_manager.h"
 #include "net/dns/host_resolver_proc.h"
 #include "net/dns/public/dns_over_https_server_config.h"
 #include "net/http/http_stream_factory_test_util.h"
 #include "net/log/net_log.h"
 #include "net/socket/transport_client_socket_pool.h"
 #include "net/test/embedded_test_server/embedded_test_server.h"
 #include "net/test/embedded_test_server/http_request.h"
 #include "net/test/embedded_test_server/http_response.h"
 #include "net/test/test_with_task_environment.h"
 #include "net/traffic_annotation/network_traffic_annotation_test_helper.h"
 #include "net/url_request/url_request.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_test_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"

 namespace net {
 namespace {

 const size_t kHeaderSize = sizeof(dns_protocol::Header);
 const char kTestBody[] = "<html><body>TEST RESPONSE</body></html>";

 class TestHostResolverProc : public HostResolverProc {
  public:
   TestHostResolverProc()
       : HostResolverProc(nullptr), insecure_queries_served_(0) {}

   int Resolve(const std::string& hostname,
               AddressFamily address_family,
               HostResolverFlags host_resolver_flags,
               AddressList* addrlist,
               int* os_error) override {
     insecure_queries_served_++;
     *addrlist = AddressList::CreateFromIPAddress(IPAddress(127, 0, 0, 1), 443);
     return OK;
   }

   uint32_t insecure_queries_served() { return insecure_queries_served_; }

  private:
   ~TestHostResolverProc() override {}
   uint32_t insecure_queries_served_;
 };

 class HttpWithDnsOverHttpsTest : public TestWithTaskEnvironment {
  public:
   HttpWithDnsOverHttpsTest()
       : resolver_(HostResolver::CreateStandaloneContextResolver(nullptr)),
         host_resolver_proc_(new TestHostResolverProc()),
         cert_verifier_(std::make_unique<MockCertVerifier>()),
         request_context_(true),
         doh_server_(EmbeddedTestServer::Type::TYPE_HTTPS),
         test_server_(EmbeddedTestServer::Type::TYPE_HTTPS),
         fail_doh_requests_(false),
         doh_queries_served_(0),
         test_https_requests_served_(0) {
     doh_server_.RegisterRequestHandler(
         base::BindRepeating(&HttpWithDnsOverHttpsTest::HandleDefaultConnect,
                             base::Unretained(this)));
     test_server_.RegisterRequestHandler(
         base::BindRepeating(&HttpWithDnsOverHttpsTest::HandleDefaultConnect,
                             base::Unretained(this)));
     EXPECT_TRUE(doh_server_.Start());
     EXPECT_TRUE(test_server_.Start());
     GURL url(doh_server_.GetURL("doh-server.com", "/dns_query"));
     std::unique_ptr<DnsClient> dns_client(DnsClient::CreateClient(nullptr));

     DnsConfig config;
     config.nameservers.push_back(IPEndPoint());
     EXPECT_TRUE(config.IsValid());
     dns_client->SetSystemConfig(std::move(config));

     resolver_->SetRequestContext(&request_context_);
     resolver_->SetProcParamsForTesting(
         ProcTaskParams(host_resolver_proc_.get(), 1));
     resolver_->GetManagerForTesting()->SetDnsClientForTesting(
         std::move(dns_client));

     DnsConfigOverrides overrides;
     overrides.dns_over_https_servers.emplace(
         {DnsOverHttpsServerConfig(url.spec(), true /* use_post */)});
     overrides.secure_dns_mode = DnsConfig::SecureDnsMode::SECURE;
     overrides.use_local_ipv6 = true;
     resolver_->GetManagerForTesting()->SetDnsConfigOverrides(
         std::move(overrides));
     request_context_.set_host_resolver(resolver_.get());

     cert_verifier_->set_default_result(net::OK);
     request_context_.set_cert_verifier(cert_verifier_.get());

     request_context_.Init();
   }

   URLRequestContext* context() { return &request_context_; }

   std::unique_ptr<test_server::HttpResponse> HandleDefaultConnect(
       const test_server::HttpRequest& request) {
     std::unique_ptr<test_server::BasicHttpResponse> http_response(
         new test_server::BasicHttpResponse);
     if (request.relative_url.compare("/dns_query") == 0) {
       doh_queries_served_++;
       if (fail_doh_requests_) {
         http_response->set_code(HTTP_NOT_FOUND);
         return std::move(http_response);
       }

       // Parse request content as a DnsQuery to access the question.
       auto request_buffer =
           base::MakeRefCounted<IOBufferWithSize>(request.content.size());
       memcpy(request_buffer->data(), request.content.data(),
              request.content.size());
       DnsQuery query(std::move(request_buffer));
       EXPECT_TRUE(query.Parse(request.content.size()));

       char header_data[kHeaderSize];
       base::BigEndianWriter header_writer(header_data, kHeaderSize);
       header_writer.WriteU16(query.id());  // Same ID as before
       char flags[] = {0x81, 0x80};
       header_writer.WriteBytes(flags, 2);
       header_writer.WriteU16(1);  // 1 question
       header_writer.WriteU16(1);  // 1 answer
       header_writer.WriteU16(0);  // No authority records
       header_writer.WriteU16(0);  // No additional records

       const uint8_t answer_data[]{0xC0, 0x0C,  // - NAME
                                   0x00, 0x01,  // - TYPE
                                   0x00, 0x01,  // - CLASS
                                   0x00, 0x00,  //
                                   0x18, 0x4C,  // - TTL
                                   0x00, 0x04,  // - RDLENGTH = 4 bytes
                                   0x7f, 0x00,  // - RDDATA, IP is 127.0.0.1
                                   0x00, 0x01};
       http_response->set_content(
           std::string(header_data, sizeof(header_data)) +
           query.question().as_string() +
           std::string((char*)answer_data, sizeof(answer_data)));
       http_response->set_content_type("application/dns-message");
       return std::move(http_response);
     } else {
       test_https_requests_served_++;
       http_response->set_content(kTestBody);
       http_response->set_content_type("text/html");
       return std::move(http_response);
     }
   }

  protected:
   void set_fail_doh_requests(bool fail_doh_requests) {
     fail_doh_requests_ = fail_doh_requests;
   }

   std::unique_ptr<ContextHostResolver> resolver_;
   scoped_refptr<net::TestHostResolverProc> host_resolver_proc_;
   std::unique_ptr<MockCertVerifier> cert_verifier_;
   TestURLRequestContext request_context_;
   EmbeddedTestServer doh_server_;
   EmbeddedTestServer test_server_;
   bool fail_doh_requests_;
   uint32_t doh_queries_served_;
   uint32_t test_https_requests_served_;
 };

 class TestHttpDelegate : public HttpStreamRequest::Delegate {
  public:
   TestHttpDelegate(base::RunLoop* loop) : loop_(loop) {}
   ~TestHttpDelegate() override {}
   void OnStreamReady(const SSLConfig& used_ssl_config,
                      const ProxyInfo& used_proxy_info,
                      std::unique_ptr<HttpStream> stream) override {
     stream->Close(false);
     loop_->Quit();
   }

   void OnWebSocketHandshakeStreamReady(
       const SSLConfig& used_ssl_config,
       const ProxyInfo& used_proxy_info,
       std::unique_ptr<WebSocketHandshakeStreamBase> stream) override {}

   void OnBidirectionalStreamImplReady(
       const SSLConfig& used_ssl_config,
       const ProxyInfo& used_proxy_info,
       std::unique_ptr<BidirectionalStreamImpl> stream) override {}

   void OnStreamFailed(int status,
                       const NetErrorDetails& net_error_details,
                       const SSLConfig& used_ssl_config,
                       const ProxyInfo& used_proxy_info,
                       ResolveErrorInfo resolve_eror_info) override {}

   void OnCertificateError(int status,
                           const SSLConfig& used_ssl_config,
                           const SSLInfo& ssl_info) override {}

   void OnNeedsProxyAuth(const HttpResponseInfo& proxy_response,
                         const SSLConfig& used_ssl_config,
                         const ProxyInfo& used_proxy_info,
                         HttpAuthController* auth_controller) override {}

   void OnNeedsClientAuth(const SSLConfig& used_ssl_config,
                          SSLCertRequestInfo* cert_info) override {}

   void OnQuicBroken() override {}

  private:
   base::RunLoop* loop_;
 };

 // This test sets up a request which will reenter the connection pools by
 // triggering a DNS over HTTPS request. It also sets up an idle socket
 // which was a precondition for the crash we saw in  https://crbug.com/830917.
 TEST_F(HttpWithDnsOverHttpsTest, EndToEnd) {
   // Create and start http server.
   EmbeddedTestServer http_server(EmbeddedTestServer::Type::TYPE_HTTP);
   http_server.RegisterRequestHandler(base::BindRepeating(
       &HttpWithDnsOverHttpsTest::HandleDefaultConnect, base::Unretained(this)));
   EXPECT_TRUE(http_server.Start());

   // Set up an idle socket.
   HttpTransactionFactory* transaction_factory =
       request_context_.http_transaction_factory();
   HttpStreamFactory::JobFactory default_job_factory;
   HttpNetworkSession* network_session = transaction_factory->GetSession();
   base::RunLoop loop;
   TestHttpDelegate request_delegate(&loop);

   HttpStreamFactory* factory = network_session->http_stream_factory();
   HttpRequestInfo request_info;
   request_info.method = "GET";
   request_info.url = http_server.GetURL("localhost", "/preconnect");

   std::unique_ptr<HttpStreamRequest> request(factory->RequestStream(
       request_info, DEFAULT_PRIORITY, SSLConfig(), SSLConfig(),
       &request_delegate, false, false, NetLogWithSource()));
   loop.Run();

   ClientSocketPool::GroupId group_id(
       HostPortPair(request_info.url.host(), request_info.url.IntPort()),
       ClientSocketPool::SocketType::kHttp, PrivacyMode::PRIVACY_MODE_DISABLED,
       NetworkIsolationKey(), false /* disable_secure_dns */);
   EXPECT_EQ(network_session
                 ->GetSocketPool(HttpNetworkSession::NORMAL_SOCKET_POOL,
                                 ProxyServer::Direct())
                 ->IdleSocketCountInGroup(group_id),
             1u);

   // The domain "localhost" is resolved locally, so no DNS lookups should have
   // occurred.
   EXPECT_EQ(doh_queries_served_, 0u);
   EXPECT_EQ(host_resolver_proc_->insecure_queries_served(), 0u);
   // A stream was established, but no HTTPS request has been made yet.
   EXPECT_EQ(test_https_requests_served_, 0u);

   // Make a request that will trigger a DoH query as well.
   TestDelegate d;
   d.set_allow_certificate_errors(true);
   GURL main_url = test_server_.GetURL("bar.example.com", "/test");
   std::unique_ptr<URLRequest> req(context()->CreateRequest(
       main_url, DEFAULT_PRIORITY, &d, TRAFFIC_ANNOTATION_FOR_TESTS));
   req->Start();
   base::RunLoop().Run();
   EXPECT_TRUE(test_server_.ShutdownAndWaitUntilComplete());
   EXPECT_TRUE(http_server.ShutdownAndWaitUntilComplete());
   EXPECT_TRUE(doh_server_.ShutdownAndWaitUntilComplete());

   // There should be two DoH lookups for "bar.example.com" (both A and AAAA
   // records are queried).
   EXPECT_EQ(doh_queries_served_, 2u);
   // The requests to the DoH server are pooled, so there should only be one
   // insecure lookup for the DoH server hostname.
   EXPECT_EQ(host_resolver_proc_->insecure_queries_served(), 1u);
   // There should be one non-DoH HTTPS request for the connection to
   // "bar.example.com".
   EXPECT_EQ(test_https_requests_served_, 1u);

   EXPECT_TRUE(d.response_completed());
   EXPECT_EQ(d.request_status(), 0);
   EXPECT_EQ(d.data_received(), kTestBody);
 }

 TEST_F(HttpWithDnsOverHttpsTest, EndToEndFail) {
   // Fail all DoH requests.
   set_fail_doh_requests(true);

   // Make a request that will trigger a DoH query.
   TestDelegate d;
   GURL main_url = test_server_.GetURL("fail.example.com", "/test");
   std::unique_ptr<URLRequest> req(context()->CreateRequest(
       main_url, DEFAULT_PRIORITY, &d, TRAFFIC_ANNOTATION_FOR_TESTS));
   req->Start();
   base::RunLoop().Run();
   EXPECT_TRUE(test_server_.ShutdownAndWaitUntilComplete());
   EXPECT_TRUE(doh_server_.ShutdownAndWaitUntilComplete());

   // No HTTPS connection to the test server will be attempted due to the
   // host resolution error.
   EXPECT_EQ(test_https_requests_served_, 0u);

   EXPECT_TRUE(d.response_completed());
   EXPECT_EQ(d.request_status(), net::ERR_NAME_NOT_RESOLVED);

   const auto& resolve_error_info = req->response_info().resolve_error_info;
   EXPECT_TRUE(resolve_error_info.is_secure_network_error);
   EXPECT_EQ(resolve_error_info.error, net::ERR_DNS_MALFORMED_RESPONSE);
 }

 }  // namespace
 }  // namespace net
	// Copyright 2018 The Chromium Authors. All rights reserved.
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.

	#include "base/big_endian.h"
	#include "base/bind.h"
	#include "base/memory/scoped_refptr.h"
	#include "net/base/privacy_mode.h"
	#include "net/base/proxy_server.h"
	#include "net/cert/mock_cert_verifier.h"
	#include "net/dns/context_host_resolver.h"
	#include "net/dns/dns_client.h"
	#include "net/dns/dns_config.h"
	#include "net/dns/dns_query.h"
	#include "net/dns/dns_transaction.h"
	#include "net/dns/host_resolver.h"
	#include "net/dns/host_resolver_manager.h"
	#include "net/dns/host_resolver_proc.h"
	#include "net/dns/public/dns_over_https_server_config.h"
	#include "net/http/http_stream_factory_test_util.h"
	#include "net/log/net_log.h"
	#include "net/socket/transport_client_socket_pool.h"
	#include "net/test/embedded_test_server/embedded_test_server.h"
	#include "net/test/embedded_test_server/http_request.h"
	#include "net/test/embedded_test_server/http_response.h"
	#include "net/test/test_with_task_environment.h"
	#include "net/traffic_annotation/network_traffic_annotation_test_helper.h"
	#include "net/url_request/url_request.h"
	#include "net/url_request/url_request_context.h"
	#include "net/url_request/url_request_test_util.h"
	#include "testing/gtest/include/gtest/gtest.h"
	#include "testing/platform_test.h"

	namespace net {
	namespace {

	const size_t kHeaderSize = sizeof(dns_protocol::Header);
	const char kTestBody[] = "<html><body>TEST RESPONSE</body></html>";

	class TestHostResolverProc : public HostResolverProc {
	public:
	TestHostResolverProc()
	: HostResolverProc(nullptr), insecure_queries_served_(0) {}

	int Resolve(const std::string& hostname,
	AddressFamily address_family,
	HostResolverFlags host_resolver_flags,
	AddressList* addrlist,
	int* os_error) override {
	insecure_queries_served_++;
	*addrlist = AddressList::CreateFromIPAddress(IPAddress(127, 0, 0, 1), 443);
	return OK;
	}

	uint32_t insecure_queries_served() { return insecure_queries_served_; }

	private:
	~TestHostResolverProc() override {}
	uint32_t insecure_queries_served_;
	};

	class HttpWithDnsOverHttpsTest : public TestWithTaskEnvironment {
	public:
	HttpWithDnsOverHttpsTest()
	: resolver_(HostResolver::CreateStandaloneContextResolver(nullptr)),
	host_resolver_proc_(new TestHostResolverProc()),
	cert_verifier_(std::make_unique<MockCertVerifier>()),
	request_context_(true),
	doh_server_(EmbeddedTestServer::Type::TYPE_HTTPS),
	test_server_(EmbeddedTestServer::Type::TYPE_HTTPS),
	fail_doh_requests_(false),
	doh_queries_served_(0),
	test_https_requests_served_(0) {
	doh_server_.RegisterRequestHandler(
	base::BindRepeating(&HttpWithDnsOverHttpsTest::HandleDefaultConnect,
	base::Unretained(this)));
	test_server_.RegisterRequestHandler(
	base::BindRepeating(&HttpWithDnsOverHttpsTest::HandleDefaultConnect,
	base::Unretained(this)));
	EXPECT_TRUE(doh_server_.Start());
	EXPECT_TRUE(test_server_.Start());
	GURL url(doh_server_.GetURL("doh-server.com", "/dns_query"));
	std::unique_ptr<DnsClient> dns_client(DnsClient::CreateClient(nullptr));

	DnsConfig config;
	config.nameservers.push_back(IPEndPoint());
	EXPECT_TRUE(config.IsValid());
	dns_client->SetSystemConfig(std::move(config));

	resolver_->SetRequestContext(&request_context_);
	resolver_->SetProcParamsForTesting(
	ProcTaskParams(host_resolver_proc_.get(), 1));
	resolver_->GetManagerForTesting()->SetDnsClientForTesting(
	std::move(dns_client));

	DnsConfigOverrides overrides;
	overrides.dns_over_https_servers.emplace(
	{DnsOverHttpsServerConfig(url.spec(), true /* use_post */)});
	overrides.secure_dns_mode = DnsConfig::SecureDnsMode::SECURE;
	overrides.use_local_ipv6 = true;
	resolver_->GetManagerForTesting()->SetDnsConfigOverrides(
	std::move(overrides));
	request_context_.set_host_resolver(resolver_.get());

	cert_verifier_->set_default_result(net::OK);
	request_context_.set_cert_verifier(cert_verifier_.get());

	request_context_.Init();
	}

	URLRequestContext* context() { return &request_context_; }

	std::unique_ptr<test_server::HttpResponse> HandleDefaultConnect(
	const test_server::HttpRequest& request) {
	std::unique_ptr<test_server::BasicHttpResponse> http_response(
	new test_server::BasicHttpResponse);
	if (request.relative_url.compare("/dns_query") == 0) {
	doh_queries_served_++;
	if (fail_doh_requests_) {
	http_response->set_code(HTTP_NOT_FOUND);
	return std::move(http_response);
	}

	// Parse request content as a DnsQuery to access the question.
	auto request_buffer =
	base::MakeRefCounted<IOBufferWithSize>(request.content.size());
	memcpy(request_buffer->data(), request.content.data(),
	request.content.size());
	DnsQuery query(std::move(request_buffer));
	EXPECT_TRUE(query.Parse(request.content.size()));

	char header_data[kHeaderSize];
	base::BigEndianWriter header_writer(header_data, kHeaderSize);
	header_writer.WriteU16(query.id()); // Same ID as before
	char flags[] = {0x81, 0x80};
	header_writer.WriteBytes(flags, 2);
	header_writer.WriteU16(1); // 1 question
	header_writer.WriteU16(1); // 1 answer
	header_writer.WriteU16(0); // No authority records
	header_writer.WriteU16(0); // No additional records

	const uint8_t answer_data[]{0xC0, 0x0C, // - NAME
	0x00, 0x01, // - TYPE
	0x00, 0x01, // - CLASS
	0x00, 0x00, //
	0x18, 0x4C, // - TTL
	0x00, 0x04, // - RDLENGTH = 4 bytes
	0x7f, 0x00, // - RDDATA, IP is 127.0.0.1
	0x00, 0x01};
	http_response->set_content(
	std::string(header_data, sizeof(header_data)) +
	query.question().as_string() +
	std::string((char*)answer_data, sizeof(answer_data)));
	http_response->set_content_type("application/dns-message");
	return std::move(http_response);
	} else {
	test_https_requests_served_++;
	http_response->set_content(kTestBody);
	http_response->set_content_type("text/html");
	return std::move(http_response);
	}
	}

	protected:
	void set_fail_doh_requests(bool fail_doh_requests) {
	fail_doh_requests_ = fail_doh_requests;
	}

	std::unique_ptr<ContextHostResolver> resolver_;
	scoped_refptr<net::TestHostResolverProc> host_resolver_proc_;
	std::unique_ptr<MockCertVerifier> cert_verifier_;
	TestURLRequestContext request_context_;
	EmbeddedTestServer doh_server_;
	EmbeddedTestServer test_server_;
	bool fail_doh_requests_;
	uint32_t doh_queries_served_;
	uint32_t test_https_requests_served_;
	};

	class TestHttpDelegate : public HttpStreamRequest::Delegate {
	public:
	TestHttpDelegate(base::RunLoop* loop) : loop_(loop) {}
	~TestHttpDelegate() override {}
	void OnStreamReady(const SSLConfig& used_ssl_config,
	const ProxyInfo& used_proxy_info,
	std::unique_ptr<HttpStream> stream) override {
	stream->Close(false);
	loop_->Quit();
	}

	void OnWebSocketHandshakeStreamReady(
	const SSLConfig& used_ssl_config,
	const ProxyInfo& used_proxy_info,
	std::unique_ptr<WebSocketHandshakeStreamBase> stream) override {}

	void OnBidirectionalStreamImplReady(
	const SSLConfig& used_ssl_config,
	const ProxyInfo& used_proxy_info,
	std::unique_ptr<BidirectionalStreamImpl> stream) override {}

	void OnStreamFailed(int status,
	const NetErrorDetails& net_error_details,
	const SSLConfig& used_ssl_config,
	const ProxyInfo& used_proxy_info,
	ResolveErrorInfo resolve_eror_info) override {}

	void OnCertificateError(int status,
	const SSLConfig& used_ssl_config,
	const SSLInfo& ssl_info) override {}

	void OnNeedsProxyAuth(const HttpResponseInfo& proxy_response,
	const SSLConfig& used_ssl_config,
	const ProxyInfo& used_proxy_info,
	HttpAuthController* auth_controller) override {}

	void OnNeedsClientAuth(const SSLConfig& used_ssl_config,
	SSLCertRequestInfo* cert_info) override {}

	void OnQuicBroken() override {}

	private:
	base::RunLoop* loop_;
	};

	// This test sets up a request which will reenter the connection pools by
	// triggering a DNS over HTTPS request. It also sets up an idle socket
	// which was a precondition for the crash we saw in https://crbug.com/830917.
	TEST_F(HttpWithDnsOverHttpsTest, EndToEnd) {
	// Create and start http server.
	EmbeddedTestServer http_server(EmbeddedTestServer::Type::TYPE_HTTP);
	http_server.RegisterRequestHandler(base::BindRepeating(
	&HttpWithDnsOverHttpsTest::HandleDefaultConnect, base::Unretained(this)));
	EXPECT_TRUE(http_server.Start());

	// Set up an idle socket.
	HttpTransactionFactory* transaction_factory =
	request_context_.http_transaction_factory();
	HttpStreamFactory::JobFactory default_job_factory;
	HttpNetworkSession* network_session = transaction_factory->GetSession();
	base::RunLoop loop;
	TestHttpDelegate request_delegate(&loop);

	HttpStreamFactory* factory = network_session->http_stream_factory();
	HttpRequestInfo request_info;
	request_info.method = "GET";
	request_info.url = http_server.GetURL("localhost", "/preconnect");

	std::unique_ptr<HttpStreamRequest> request(factory->RequestStream(
	request_info, DEFAULT_PRIORITY, SSLConfig(), SSLConfig(),
	&request_delegate, false, false, NetLogWithSource()));
	loop.Run();

	ClientSocketPool::GroupId group_id(
	HostPortPair(request_info.url.host(), request_info.url.IntPort()),
	ClientSocketPool::SocketType::kHttp, PrivacyMode::PRIVACY_MODE_DISABLED,
	NetworkIsolationKey(), false /* disable_secure_dns */);
	EXPECT_EQ(network_session
	->GetSocketPool(HttpNetworkSession::NORMAL_SOCKET_POOL,
	ProxyServer::Direct())
	->IdleSocketCountInGroup(group_id),
	1u);

	// The domain "localhost" is resolved locally, so no DNS lookups should have
	// occurred.
	EXPECT_EQ(doh_queries_served_, 0u);
	EXPECT_EQ(host_resolver_proc_->insecure_queries_served(), 0u);
	// A stream was established, but no HTTPS request has been made yet.
	EXPECT_EQ(test_https_requests_served_, 0u);

	// Make a request that will trigger a DoH query as well.
	TestDelegate d;
	d.set_allow_certificate_errors(true);
	GURL main_url = test_server_.GetURL("bar.example.com", "/test");
	std::unique_ptr<URLRequest> req(context()->CreateRequest(
	main_url, DEFAULT_PRIORITY, &d, TRAFFIC_ANNOTATION_FOR_TESTS));
	req->Start();
	base::RunLoop().Run();
	EXPECT_TRUE(test_server_.ShutdownAndWaitUntilComplete());
	EXPECT_TRUE(http_server.ShutdownAndWaitUntilComplete());
	EXPECT_TRUE(doh_server_.ShutdownAndWaitUntilComplete());

	// There should be two DoH lookups for "bar.example.com" (both A and AAAA
	// records are queried).
	EXPECT_EQ(doh_queries_served_, 2u);
	// The requests to the DoH server are pooled, so there should only be one
	// insecure lookup for the DoH server hostname.
	EXPECT_EQ(host_resolver_proc_->insecure_queries_served(), 1u);
	// There should be one non-DoH HTTPS request for the connection to
	// "bar.example.com".
	EXPECT_EQ(test_https_requests_served_, 1u);

	EXPECT_TRUE(d.response_completed());
	EXPECT_EQ(d.request_status(), 0);
	EXPECT_EQ(d.data_received(), kTestBody);
	}

	TEST_F(HttpWithDnsOverHttpsTest, EndToEndFail) {
	// Fail all DoH requests.
	set_fail_doh_requests(true);

	// Make a request that will trigger a DoH query.
	TestDelegate d;
	GURL main_url = test_server_.GetURL("fail.example.com", "/test");
	std::unique_ptr<URLRequest> req(context()->CreateRequest(
	main_url, DEFAULT_PRIORITY, &d, TRAFFIC_ANNOTATION_FOR_TESTS));
	req->Start();
	base::RunLoop().Run();
	EXPECT_TRUE(test_server_.ShutdownAndWaitUntilComplete());
	EXPECT_TRUE(doh_server_.ShutdownAndWaitUntilComplete());

	// No HTTPS connection to the test server will be attempted due to the
	// host resolution error.
	EXPECT_EQ(test_https_requests_served_, 0u);

	EXPECT_TRUE(d.response_completed());
	EXPECT_EQ(d.request_status(), net::ERR_NAME_NOT_RESOLVED);

	const auto& resolve_error_info = req->response_info().resolve_error_info;
	EXPECT_TRUE(resolve_error_info.is_secure_network_error);
	EXPECT_EQ(resolve_error_info.error, net::ERR_DNS_MALFORMED_RESPONSE);
	}

	} // namespace
	} // namespace net