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socks_connect_job_unittest.cc
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socks_connect_job_unittest.cc
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// Copyright 2019 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 "net/socket/socks_connect_job.h"
#include "base/callback.h"
#include "base/containers/flat_set.h"
#include "base/containers/span.h"
#include "base/run_loop.h"
#include "base/test/task_environment.h"
#include "base/time/time.h"
#include "build/build_config.h"
#include "net/base/load_states.h"
#include "net/base/load_timing_info.h"
#include "net/base/load_timing_info_test_util.h"
#include "net/base/net_errors.h"
#include "net/base/network_isolation_key.h"
#include "net/dns/mock_host_resolver.h"
#include "net/dns/public/secure_dns_policy.h"
#include "net/log/net_log.h"
#include "net/socket/client_socket_factory.h"
#include "net/socket/client_socket_handle.h"
#include "net/socket/connect_job_test_util.h"
#include "net/socket/socket_tag.h"
#include "net/socket/socket_test_util.h"
#include "net/socket/socks_connect_job.h"
#include "net/socket/transport_client_socket_pool_test_util.h"
#include "net/socket/transport_connect_job.h"
#include "net/test/gtest_util.h"
#include "net/test/test_with_task_environment.h"
#include "net/traffic_annotation/network_traffic_annotation_test_helper.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace net {
namespace {
const char kProxyHostName[] = "proxy.test";
const int kProxyPort = 4321;
constexpr base::TimeDelta kTinyTime = base::Microseconds(1);
class SOCKSConnectJobTest : public testing::Test, public WithTaskEnvironment {
public:
enum class SOCKSVersion {
V4,
V5,
};
SOCKSConnectJobTest()
: WithTaskEnvironment(base::test::TaskEnvironment::TimeSource::MOCK_TIME),
common_connect_job_params_(
&client_socket_factory_,
&host_resolver_,
nullptr /* http_auth_cache */,
nullptr /* http_auth_handler_factory */,
nullptr /* spdy_session_pool */,
nullptr /* quic_supported_versions */,
nullptr /* quic_stream_factory */,
nullptr /* proxy_delegate */,
nullptr /* http_user_agent_settings */,
nullptr /* ssl_client_context */,
nullptr /* socket_performance_watcher_factory */,
nullptr /* network_quality_estimator */,
NetLog::Get(),
nullptr /* websocket_endpoint_lock_manager */) {}
~SOCKSConnectJobTest() override {}
static scoped_refptr<SOCKSSocketParams> CreateSOCKSParams(
SOCKSVersion socks_version,
SecureDnsPolicy secure_dns_policy = SecureDnsPolicy::kAllow) {
return base::MakeRefCounted<SOCKSSocketParams>(
base::MakeRefCounted<TransportSocketParams>(
HostPortPair(kProxyHostName, kProxyPort), NetworkIsolationKey(),
secure_dns_policy, OnHostResolutionCallback(),
/*supported_alpns=*/base::flat_set<std::string>()),
socks_version == SOCKSVersion::V5,
socks_version == SOCKSVersion::V4
? HostPortPair(kSOCKS4TestHost, kSOCKS4TestPort)
: HostPortPair(kSOCKS5TestHost, kSOCKS5TestPort),
NetworkIsolationKey(), TRAFFIC_ANNOTATION_FOR_TESTS);
}
protected:
MockHostResolver host_resolver_{/*default_result=*/MockHostResolverBase::
RuleResolver::GetLocalhostResult()};
MockTaggingClientSocketFactory client_socket_factory_;
const CommonConnectJobParams common_connect_job_params_;
};
TEST_F(SOCKSConnectJobTest, HostResolutionFailure) {
host_resolver_.rules()->AddSimulatedTimeoutFailure(kProxyHostName);
for (bool failure_synchronous : {false, true}) {
host_resolver_.set_synchronous_mode(failure_synchronous);
TestConnectJobDelegate test_delegate;
SOCKSConnectJob socks_connect_job(DEFAULT_PRIORITY, SocketTag(),
&common_connect_job_params_,
CreateSOCKSParams(SOCKSVersion::V5),
&test_delegate, nullptr /* net_log */);
test_delegate.StartJobExpectingResult(
&socks_connect_job, ERR_PROXY_CONNECTION_FAILED, failure_synchronous);
EXPECT_THAT(socks_connect_job.GetResolveErrorInfo().error,
test::IsError(ERR_DNS_TIMED_OUT));
}
}
TEST_F(SOCKSConnectJobTest, HostResolutionFailureSOCKS4Endpoint) {
const char hostname[] = "google.com";
host_resolver_.rules()->AddSimulatedTimeoutFailure(hostname);
for (bool failure_synchronous : {false, true}) {
host_resolver_.set_synchronous_mode(failure_synchronous);
SequencedSocketData sequenced_socket_data{base::span<MockRead>(),
base::span<MockWrite>()};
sequenced_socket_data.set_connect_data(MockConnect(SYNCHRONOUS, OK));
client_socket_factory_.AddSocketDataProvider(&sequenced_socket_data);
scoped_refptr<SOCKSSocketParams> socket_params =
base::MakeRefCounted<SOCKSSocketParams>(
base::MakeRefCounted<TransportSocketParams>(
HostPortPair(kProxyHostName, kProxyPort), NetworkIsolationKey(),
SecureDnsPolicy::kAllow, OnHostResolutionCallback(),
/*supported_alpns=*/base::flat_set<std::string>()),
false /* socks_v5 */, HostPortPair(hostname, kSOCKS4TestPort),
NetworkIsolationKey(), TRAFFIC_ANNOTATION_FOR_TESTS);
TestConnectJobDelegate test_delegate;
SOCKSConnectJob socks_connect_job(
DEFAULT_PRIORITY, SocketTag(), &common_connect_job_params_,
socket_params, &test_delegate, nullptr /* net_log */);
test_delegate.StartJobExpectingResult(
&socks_connect_job, ERR_NAME_NOT_RESOLVED, failure_synchronous);
EXPECT_THAT(socks_connect_job.GetResolveErrorInfo().error,
test::IsError(ERR_DNS_TIMED_OUT));
}
}
TEST_F(SOCKSConnectJobTest, HandshakeError) {
for (bool host_resolution_synchronous : {false, true}) {
for (bool write_failure_synchronous : {false, true}) {
host_resolver_.set_synchronous_mode(host_resolution_synchronous);
// No need to distinguish which part of the handshake fails. Those details
// are all handled at the StreamSocket layer, not the SOCKSConnectJob.
MockWrite writes[] = {
MockWrite(write_failure_synchronous ? SYNCHRONOUS : ASYNC,
ERR_UNEXPECTED, 0),
};
SequencedSocketData sequenced_socket_data(base::span<MockRead>(), writes);
// Host resolution is used to switch between sync and async connection
// behavior. The SOCKS layer can't distinguish between sync and async host
// resolution vs sync and async connection establishment, so just always
// make connection establishment synchroonous.
sequenced_socket_data.set_connect_data(MockConnect(SYNCHRONOUS, OK));
client_socket_factory_.AddSocketDataProvider(&sequenced_socket_data);
TestConnectJobDelegate test_delegate;
SOCKSConnectJob socks_connect_job(DEFAULT_PRIORITY, SocketTag(),
&common_connect_job_params_,
CreateSOCKSParams(SOCKSVersion::V5),
&test_delegate, nullptr /* net_log */);
test_delegate.StartJobExpectingResult(
&socks_connect_job, ERR_UNEXPECTED,
host_resolution_synchronous && write_failure_synchronous);
}
}
}
TEST_F(SOCKSConnectJobTest, SOCKS4) {
for (bool host_resolution_synchronous : {false, true}) {
for (bool read_and_writes_synchronous : {true}) {
host_resolver_.set_synchronous_mode(host_resolution_synchronous);
MockWrite writes[] = {
MockWrite(SYNCHRONOUS, kSOCKS4OkRequestLocalHostPort80,
kSOCKS4OkRequestLocalHostPort80Length, 0),
};
MockRead reads[] = {
MockRead(SYNCHRONOUS, kSOCKS4OkReply, kSOCKS4OkReplyLength, 1),
};
SequencedSocketData sequenced_socket_data(reads, writes);
// Host resolution is used to switch between sync and async connection
// behavior. The SOCKS layer can't distinguish between sync and async host
// resolution vs sync and async connection establishment, so just always
// make connection establishment synchroonous.
sequenced_socket_data.set_connect_data(MockConnect(SYNCHRONOUS, OK));
client_socket_factory_.AddSocketDataProvider(&sequenced_socket_data);
TestConnectJobDelegate test_delegate;
SOCKSConnectJob socks_connect_job(DEFAULT_PRIORITY, SocketTag(),
&common_connect_job_params_,
CreateSOCKSParams(SOCKSVersion::V4),
&test_delegate, nullptr /* net_log */);
test_delegate.StartJobExpectingResult(
&socks_connect_job, OK,
host_resolution_synchronous && read_and_writes_synchronous);
// Proxies should not set any DNS aliases.
EXPECT_TRUE(test_delegate.socket()->GetDnsAliases().empty());
}
}
}
TEST_F(SOCKSConnectJobTest, SOCKS5) {
for (bool host_resolution_synchronous : {false, true}) {
for (bool read_and_writes_synchronous : {true}) {
host_resolver_.set_synchronous_mode(host_resolution_synchronous);
MockWrite writes[] = {
MockWrite(SYNCHRONOUS, kSOCKS5GreetRequest, kSOCKS5GreetRequestLength,
0),
MockWrite(SYNCHRONOUS, kSOCKS5OkRequest, kSOCKS5OkRequestLength, 2),
};
MockRead reads[] = {
MockRead(SYNCHRONOUS, kSOCKS5GreetResponse,
kSOCKS5GreetResponseLength, 1),
MockRead(SYNCHRONOUS, kSOCKS5OkResponse, kSOCKS5OkResponseLength, 3),
};
SequencedSocketData sequenced_socket_data(reads, writes);
// Host resolution is used to switch between sync and async connection
// behavior. The SOCKS layer can't distinguish between sync and async host
// resolution vs sync and async connection establishment, so just always
// make connection establishment synchroonous.
sequenced_socket_data.set_connect_data(MockConnect(SYNCHRONOUS, OK));
client_socket_factory_.AddSocketDataProvider(&sequenced_socket_data);
TestConnectJobDelegate test_delegate;
SOCKSConnectJob socks_connect_job(DEFAULT_PRIORITY, SocketTag(),
&common_connect_job_params_,
CreateSOCKSParams(SOCKSVersion::V5),
&test_delegate, nullptr /* net_log */);
test_delegate.StartJobExpectingResult(
&socks_connect_job, OK,
host_resolution_synchronous && read_and_writes_synchronous);
// Proxies should not set any DNS aliases.
EXPECT_TRUE(test_delegate.socket()->GetDnsAliases().empty());
}
}
}
TEST_F(SOCKSConnectJobTest, HasEstablishedConnection) {
host_resolver_.set_ondemand_mode(true);
MockWrite writes[] = {
MockWrite(ASYNC, kSOCKS4OkRequestLocalHostPort80,
kSOCKS4OkRequestLocalHostPort80Length, 0),
};
MockRead reads[] = {
MockRead(ASYNC, ERR_IO_PENDING, 1),
MockRead(ASYNC, kSOCKS4OkReply, kSOCKS4OkReplyLength, 2),
};
SequencedSocketData sequenced_socket_data(reads, writes);
sequenced_socket_data.set_connect_data(MockConnect(ASYNC, OK));
client_socket_factory_.AddSocketDataProvider(&sequenced_socket_data);
TestConnectJobDelegate test_delegate;
SOCKSConnectJob socks_connect_job(DEFAULT_PRIORITY, SocketTag(),
&common_connect_job_params_,
CreateSOCKSParams(SOCKSVersion::V4),
&test_delegate, nullptr /* net_log */);
socks_connect_job.Connect();
EXPECT_EQ(LOAD_STATE_RESOLVING_HOST, socks_connect_job.GetLoadState());
EXPECT_FALSE(socks_connect_job.HasEstablishedConnection());
host_resolver_.ResolveNow(1);
EXPECT_EQ(LOAD_STATE_CONNECTING, socks_connect_job.GetLoadState());
EXPECT_FALSE(socks_connect_job.HasEstablishedConnection());
sequenced_socket_data.RunUntilPaused();
// "LOAD_STATE_CONNECTING" is also returned when negotiating a SOCKS
// connection.
EXPECT_EQ(LOAD_STATE_CONNECTING, socks_connect_job.GetLoadState());
EXPECT_TRUE(socks_connect_job.HasEstablishedConnection());
EXPECT_FALSE(test_delegate.has_result());
sequenced_socket_data.Resume();
EXPECT_THAT(test_delegate.WaitForResult(), test::IsOk());
EXPECT_TRUE(test_delegate.has_result());
}
// Check that TransportConnectJob's timeout is respected for the nested
// TransportConnectJob.
TEST_F(SOCKSConnectJobTest, TimeoutDuringDnsResolution) {
// Set HostResolver to hang.
host_resolver_.set_ondemand_mode(true);
TestConnectJobDelegate test_delegate;
SOCKSConnectJob socks_connect_job(DEFAULT_PRIORITY, SocketTag(),
&common_connect_job_params_,
CreateSOCKSParams(SOCKSVersion::V5),
&test_delegate, nullptr /* net_log */);
socks_connect_job.Connect();
// Just before the TransportConnectJob's timeout, nothing should have
// happened.
FastForwardBy(TransportConnectJob::ConnectionTimeout() - kTinyTime);
EXPECT_TRUE(host_resolver_.has_pending_requests());
EXPECT_FALSE(test_delegate.has_result());
// Wait for exactly the TransportConnectJob's timeout to have passed. The Job
// should time out.
FastForwardBy(kTinyTime);
EXPECT_TRUE(test_delegate.has_result());
EXPECT_THAT(test_delegate.WaitForResult(),
test::IsError(ERR_PROXY_CONNECTION_FAILED));
}
// Check that SOCKSConnectJob's timeout is respected for the handshake phase.
TEST_F(SOCKSConnectJobTest, TimeoutDuringHandshake) {
host_resolver_.set_ondemand_mode(true);
MockWrite writes[] = {
MockWrite(SYNCHRONOUS, ERR_IO_PENDING, 0),
};
SequencedSocketData sequenced_socket_data(base::span<MockRead>(), writes);
sequenced_socket_data.set_connect_data(MockConnect(SYNCHRONOUS, OK));
client_socket_factory_.AddSocketDataProvider(&sequenced_socket_data);
TestConnectJobDelegate test_delegate;
SOCKSConnectJob socks_connect_job(DEFAULT_PRIORITY, SocketTag(),
&common_connect_job_params_,
CreateSOCKSParams(SOCKSVersion::V5),
&test_delegate, nullptr /* net_log */);
socks_connect_job.Connect();
// Just before the TransportConnectJob's timeout, nothing should have
// happened.
FastForwardBy(TransportConnectJob::ConnectionTimeout() - kTinyTime);
EXPECT_FALSE(test_delegate.has_result());
EXPECT_TRUE(host_resolver_.has_pending_requests());
// DNS resolution completes, and the socket connects. The request should not
// time out, even after the TransportConnectJob's timeout passes. The
// SOCKSConnectJob's handshake timer should also be started.
host_resolver_.ResolveAllPending();
// Waiting until just before the SOCKS handshake times out. There should cause
// no observable change in the SOCKSConnectJob's status.
FastForwardBy(SOCKSConnectJob::HandshakeTimeoutForTesting() - kTinyTime);
EXPECT_FALSE(test_delegate.has_result());
// Wait for exactly the SOCKSConnectJob's handshake timeout has fully elapsed.
// The Job should time out.
FastForwardBy(kTinyTime);
EXPECT_FALSE(host_resolver_.has_pending_requests());
EXPECT_TRUE(test_delegate.has_result());
EXPECT_THAT(test_delegate.WaitForResult(), test::IsError(ERR_TIMED_OUT));
}
// Check initial priority is passed to the HostResolver, and priority can be
// modified.
TEST_F(SOCKSConnectJobTest, Priority) {
host_resolver_.set_ondemand_mode(true);
for (int initial_priority = MINIMUM_PRIORITY;
initial_priority <= MAXIMUM_PRIORITY; ++initial_priority) {
for (int new_priority = MINIMUM_PRIORITY; new_priority <= MAXIMUM_PRIORITY;
++new_priority) {
// Don't try changing priority to itself, as APIs may not allow that.
if (new_priority == initial_priority)
continue;
TestConnectJobDelegate test_delegate;
SOCKSConnectJob socks_connect_job(
static_cast<RequestPriority>(initial_priority), SocketTag(),
&common_connect_job_params_, CreateSOCKSParams(SOCKSVersion::V4),
&test_delegate, nullptr /* net_log */);
ASSERT_THAT(socks_connect_job.Connect(), test::IsError(ERR_IO_PENDING));
ASSERT_TRUE(host_resolver_.has_pending_requests());
int request_id = host_resolver_.num_resolve();
EXPECT_EQ(initial_priority, host_resolver_.request_priority(request_id));
// Change priority.
socks_connect_job.ChangePriority(
static_cast<RequestPriority>(new_priority));
EXPECT_EQ(new_priority, host_resolver_.request_priority(request_id));
// Restore initial priority.
socks_connect_job.ChangePriority(
static_cast<RequestPriority>(initial_priority));
EXPECT_EQ(initial_priority, host_resolver_.request_priority(request_id));
}
}
}
TEST_F(SOCKSConnectJobTest, SecureDnsPolicy) {
for (auto secure_dns_policy :
{SecureDnsPolicy::kAllow, SecureDnsPolicy::kDisable}) {
TestConnectJobDelegate test_delegate;
SOCKSConnectJob socks_connect_job(
DEFAULT_PRIORITY, SocketTag(), &common_connect_job_params_,
CreateSOCKSParams(SOCKSVersion::V4, secure_dns_policy), &test_delegate,
nullptr /* net_log */);
ASSERT_THAT(socks_connect_job.Connect(), test::IsError(ERR_IO_PENDING));
EXPECT_EQ(secure_dns_policy, host_resolver_.last_secure_dns_policy());
}
}
TEST_F(SOCKSConnectJobTest, ConnectTiming) {
host_resolver_.set_ondemand_mode(true);
MockWrite writes[] = {
MockWrite(ASYNC, ERR_IO_PENDING, 0),
MockWrite(ASYNC, kSOCKS5GreetRequest, kSOCKS5GreetRequestLength, 1),
MockWrite(SYNCHRONOUS, kSOCKS5OkRequest, kSOCKS5OkRequestLength, 3),
};
MockRead reads[] = {
MockRead(SYNCHRONOUS, kSOCKS5GreetResponse, kSOCKS5GreetResponseLength,
2),
MockRead(SYNCHRONOUS, kSOCKS5OkResponse, kSOCKS5OkResponseLength, 4),
};
SequencedSocketData sequenced_socket_data(reads, writes);
// Host resolution is used to switch between sync and async connection
// behavior. The SOCKS layer can't distinguish between sync and async host
// resolution vs sync and async connection establishment, so just always
// make connection establishment synchroonous.
sequenced_socket_data.set_connect_data(MockConnect(SYNCHRONOUS, OK));
client_socket_factory_.AddSocketDataProvider(&sequenced_socket_data);
TestConnectJobDelegate test_delegate;
SOCKSConnectJob socks_connect_job(DEFAULT_PRIORITY, SocketTag(),
&common_connect_job_params_,
CreateSOCKSParams(SOCKSVersion::V5),
&test_delegate, nullptr /* net_log */);
base::TimeTicks start = base::TimeTicks::Now();
socks_connect_job.Connect();
// DNS resolution completes after a short delay. The connection should be
// immediately established as well. The first write to the socket stalls.
FastForwardBy(kTinyTime);
host_resolver_.ResolveAllPending();
RunUntilIdle();
// After another short delay, data is received from the server.
FastForwardBy(kTinyTime);
sequenced_socket_data.Resume();
EXPECT_THAT(test_delegate.WaitForResult(), test::IsOk());
// Proxy name resolution is not considered resolving the host name for
// ConnectionInfo. For SOCKS4, where the host name is also looked up via DNS,
// the resolution time is not currently reported.
EXPECT_EQ(base::TimeTicks(), socks_connect_job.connect_timing().dns_start);
EXPECT_EQ(base::TimeTicks(), socks_connect_job.connect_timing().dns_end);
// The "connect" time for socks proxies includes DNS resolution time.
EXPECT_EQ(start, socks_connect_job.connect_timing().connect_start);
EXPECT_EQ(start + 2 * kTinyTime,
socks_connect_job.connect_timing().connect_end);
// Since SSL was not negotiated, SSL times are null.
EXPECT_EQ(base::TimeTicks(), socks_connect_job.connect_timing().ssl_start);
EXPECT_EQ(base::TimeTicks(), socks_connect_job.connect_timing().ssl_end);
}
TEST_F(SOCKSConnectJobTest, CancelDuringDnsResolution) {
// Set HostResolver to hang.
host_resolver_.set_ondemand_mode(true);
TestConnectJobDelegate test_delegate;
std::unique_ptr<SOCKSConnectJob> socks_connect_job =
std::make_unique<SOCKSConnectJob>(DEFAULT_PRIORITY, SocketTag(),
&common_connect_job_params_,
CreateSOCKSParams(SOCKSVersion::V5),
&test_delegate, nullptr /* net_log */);
socks_connect_job->Connect();
EXPECT_TRUE(host_resolver_.has_pending_requests());
socks_connect_job.reset();
RunUntilIdle();
EXPECT_FALSE(host_resolver_.has_pending_requests());
EXPECT_FALSE(test_delegate.has_result());
}
TEST_F(SOCKSConnectJobTest, CancelDuringConnect) {
host_resolver_.set_synchronous_mode(true);
SequencedSocketData sequenced_socket_data{base::span<MockRead>(),
base::span<MockWrite>()};
sequenced_socket_data.set_connect_data(MockConnect(ASYNC, OK));
client_socket_factory_.AddSocketDataProvider(&sequenced_socket_data);
TestConnectJobDelegate test_delegate;
std::unique_ptr<SOCKSConnectJob> socks_connect_job =
std::make_unique<SOCKSConnectJob>(DEFAULT_PRIORITY, SocketTag(),
&common_connect_job_params_,
CreateSOCKSParams(SOCKSVersion::V5),
&test_delegate, nullptr /* net_log */);
socks_connect_job->Connect();
// Host resolution should resolve immediately. The ConnectJob should currently
// be trying to connect.
EXPECT_FALSE(host_resolver_.has_pending_requests());
socks_connect_job.reset();
RunUntilIdle();
EXPECT_FALSE(test_delegate.has_result());
// Socket should have been destroyed.
EXPECT_FALSE(sequenced_socket_data.socket());
}
TEST_F(SOCKSConnectJobTest, CancelDuringHandshake) {
host_resolver_.set_synchronous_mode(true);
// Hang at start of handshake.
MockWrite writes[] = {
MockWrite(SYNCHRONOUS, ERR_IO_PENDING, 0),
};
SequencedSocketData sequenced_socket_data(base::span<MockRead>(), writes);
sequenced_socket_data.set_connect_data(MockConnect(SYNCHRONOUS, OK));
client_socket_factory_.AddSocketDataProvider(&sequenced_socket_data);
TestConnectJobDelegate test_delegate;
std::unique_ptr<SOCKSConnectJob> socks_connect_job =
std::make_unique<SOCKSConnectJob>(DEFAULT_PRIORITY, SocketTag(),
&common_connect_job_params_,
CreateSOCKSParams(SOCKSVersion::V5),
&test_delegate, nullptr /* net_log */);
socks_connect_job->Connect();
// Host resolution should resolve immediately. The socket connecting, and the
// ConnectJob should currently be trying to send the SOCKS handshake.
EXPECT_FALSE(host_resolver_.has_pending_requests());
socks_connect_job.reset();
RunUntilIdle();
EXPECT_FALSE(test_delegate.has_result());
// Socket should have been destroyed.
EXPECT_FALSE(sequenced_socket_data.socket());
EXPECT_TRUE(sequenced_socket_data.AllWriteDataConsumed());
}
} // namespace
} // namespace net