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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// This file contains some tests for TCPClientSocket.
// transport_client_socket_unittest.cc contans some other tests that
// are common for TCP and other types of sockets.
#include "net/socket/tcp_client_socket.h"
#include <stddef.h>
#include <set>
#include <string>
#include <vector>
#include "base/strings/string_number_conversions.h"
#include "base/test/bind.h"
#include "base/test/metrics/histogram_tester.h"
#include "base/test/power_monitor_test.h"
#include "base/test/scoped_feature_list.h"
#include "base/test/task_environment.h"
#include "build/build_config.h"
#include "net/base/features.h"
#include "net/base/ip_address.h"
#include "net/base/ip_endpoint.h"
#include "net/base/net_errors.h"
#include "net/base/port_util.h"
#include "net/base/test_completion_callback.h"
#include "net/log/net_log_source.h"
#include "net/nqe/network_quality_estimator_test_util.h"
#include "net/socket/socket_performance_watcher.h"
#include "net/socket/socket_test_util.h"
#include "net/socket/tcp_server_socket.h"
#include "net/test/embedded_test_server/embedded_test_server.h"
#include "net/test/gtest_util.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"
// This matches logic in tcp_client_socket.cc. Only used once, but defining it
// in this file instead of just inlining the OS checks where its used makes it
// more grep-able.
#if !BUILDFLAG(IS_ANDROID)
#define TCP_CLIENT_SOCKET_OBSERVES_SUSPEND
#endif
using net::test::IsError;
using net::test::IsOk;
using testing::Not;
namespace base {
class TimeDelta;
}
namespace net {
namespace {
class TCPClientSocketTest
: public testing::Test,
// The param indicates whether the
// "TcpSocketIoCompletionPortWin" feature is enabled.
public testing::WithParamInterface<bool> {
public:
TCPClientSocketTest()
: task_environment_(base::test::TaskEnvironment::MainThreadType::IO) {
#if BUILDFLAG(IS_WIN)
scoped_feature_list_.InitWithFeatureState(
features::kTcpSocketIoCompletionPortWin, GetParam());
#else
CHECK(!GetParam());
#endif // BUILDFLAG(IS_WIN)
}
~TCPClientSocketTest() override {
base::PowerMonitor::GetInstance()->ShutdownForTesting();
}
void Suspend() { power_monitor_source_.Suspend(); }
void Resume() { power_monitor_source_.Resume(); }
void CreateConnectedSockets(
std::unique_ptr<StreamSocket>* accepted_socket,
std::unique_ptr<TCPClientSocket>* client_socket,
std::unique_ptr<ServerSocket>* server_socket_opt = nullptr) {
IPAddress local_address = IPAddress::IPv4Localhost();
std::unique_ptr<TCPServerSocket> server_socket =
std::make_unique<TCPServerSocket>(nullptr, NetLogSource());
ASSERT_THAT(server_socket->Listen(IPEndPoint(local_address, 0), 1,
/*ipv6_only=*/std::nullopt),
IsOk());
IPEndPoint server_address;
ASSERT_THAT(server_socket->GetLocalAddress(&server_address), IsOk());
*client_socket = std::make_unique<TCPClientSocket>(
AddressList(server_address), nullptr, nullptr, nullptr, NetLogSource());
EXPECT_THAT((*client_socket)->Bind(IPEndPoint(local_address, 0)), IsOk());
IPEndPoint local_address_result;
EXPECT_THAT((*client_socket)->GetLocalAddress(&local_address_result),
IsOk());
EXPECT_EQ(local_address, local_address_result.address());
TestCompletionCallback connect_callback;
int connect_result = (*client_socket)->Connect(connect_callback.callback());
TestCompletionCallback accept_callback;
int result =
server_socket->Accept(accepted_socket, accept_callback.callback());
result = accept_callback.GetResult(result);
ASSERT_THAT(result, IsOk());
ASSERT_THAT(connect_callback.GetResult(connect_result), IsOk());
EXPECT_TRUE((*client_socket)->IsConnected());
EXPECT_TRUE((*accepted_socket)->IsConnected());
if (server_socket_opt)
*server_socket_opt = std::move(server_socket);
}
private:
base::test::ScopedFeatureList scoped_feature_list_;
base::test::TaskEnvironment task_environment_;
base::test::ScopedPowerMonitorTestSource power_monitor_source_;
};
// Try binding a socket to loopback interface and verify that we can
// still connect to a server on the same interface.
TEST_P(TCPClientSocketTest, BindLoopbackToLoopback) {
IPAddress lo_address = IPAddress::IPv4Localhost();
TCPServerSocket server(nullptr, NetLogSource());
ASSERT_THAT(server.Listen(IPEndPoint(lo_address, 0), 1,
/*ipv6_only=*/std::nullopt),
IsOk());
IPEndPoint server_address;
ASSERT_THAT(server.GetLocalAddress(&server_address), IsOk());
TCPClientSocket socket(AddressList(server_address), nullptr, nullptr, nullptr,
NetLogSource());
EXPECT_THAT(socket.Bind(IPEndPoint(lo_address, 0)), IsOk());
IPEndPoint local_address_result;
EXPECT_THAT(socket.GetLocalAddress(&local_address_result), IsOk());
EXPECT_EQ(lo_address, local_address_result.address());
TestCompletionCallback connect_callback;
int connect_result = socket.Connect(connect_callback.callback());
TestCompletionCallback accept_callback;
std::unique_ptr<StreamSocket> accepted_socket;
int result = server.Accept(&accepted_socket, accept_callback.callback());
result = accept_callback.GetResult(result);
ASSERT_THAT(result, IsOk());
EXPECT_THAT(connect_callback.GetResult(connect_result), IsOk());
EXPECT_TRUE(socket.IsConnected());
socket.Disconnect();
EXPECT_FALSE(socket.IsConnected());
EXPECT_EQ(ERR_SOCKET_NOT_CONNECTED,
socket.GetLocalAddress(&local_address_result));
}
// Try to bind socket to the loopback interface and connect to an
// external address, verify that connection fails.
TEST_P(TCPClientSocketTest, BindLoopbackToExternal) {
IPAddress external_ip(72, 14, 213, 105);
TCPClientSocket socket(AddressList::CreateFromIPAddress(external_ip, 80),
nullptr, nullptr, nullptr, NetLogSource());
EXPECT_THAT(socket.Bind(IPEndPoint(IPAddress::IPv4Localhost(), 0)), IsOk());
TestCompletionCallback connect_callback;
int result = socket.Connect(connect_callback.callback());
// We may get different errors here on different system, but
// connect() is not expected to succeed.
EXPECT_THAT(connect_callback.GetResult(result), Not(IsOk()));
}
// Bind a socket to the IPv4 loopback interface and try to connect to
// the IPv6 loopback interface, verify that connection fails.
TEST_P(TCPClientSocketTest, BindLoopbackToIPv6) {
TCPServerSocket server(nullptr, NetLogSource());
int listen_result =
server.Listen(IPEndPoint(IPAddress::IPv6Localhost(), 0), 1,
/*ipv6_only=*/std::nullopt);
if (listen_result != OK) {
LOG(ERROR) << "Failed to listen on ::1 - probably because IPv6 is disabled."
" Skipping the test";
return;
}
IPEndPoint server_address;
ASSERT_THAT(server.GetLocalAddress(&server_address), IsOk());
TCPClientSocket socket(AddressList(server_address), nullptr, nullptr, nullptr,
NetLogSource());
EXPECT_THAT(socket.Bind(IPEndPoint(IPAddress::IPv4Localhost(), 0)), IsOk());
TestCompletionCallback connect_callback;
int result = socket.Connect(connect_callback.callback());
EXPECT_THAT(connect_callback.GetResult(result), Not(IsOk()));
}
TEST_P(TCPClientSocketTest, WasEverUsed) {
IPAddress lo_address = IPAddress::IPv4Localhost();
TCPServerSocket server(nullptr, NetLogSource());
ASSERT_THAT(
server.Listen(IPEndPoint(lo_address, 0), 1, /*ipv6_only=*/std::nullopt),
IsOk());
IPEndPoint server_address;
ASSERT_THAT(server.GetLocalAddress(&server_address), IsOk());
TCPClientSocket socket(AddressList(server_address), nullptr, nullptr, nullptr,
NetLogSource());
EXPECT_FALSE(socket.WasEverUsed());
EXPECT_THAT(socket.Bind(IPEndPoint(lo_address, 0)), IsOk());
// Just connecting the socket should not set WasEverUsed.
TestCompletionCallback connect_callback;
int connect_result = socket.Connect(connect_callback.callback());
EXPECT_FALSE(socket.WasEverUsed());
TestCompletionCallback accept_callback;
std::unique_ptr<StreamSocket> accepted_socket;
int result = server.Accept(&accepted_socket, accept_callback.callback());
ASSERT_THAT(accept_callback.GetResult(result), IsOk());
EXPECT_THAT(connect_callback.GetResult(connect_result), IsOk());
EXPECT_FALSE(socket.WasEverUsed());
EXPECT_TRUE(socket.IsConnected());
// Writing some data to the socket _should_ set WasEverUsed.
const char kRequest[] = "GET / HTTP/1.0";
auto write_buffer = base::MakeRefCounted<StringIOBuffer>(kRequest);
TestCompletionCallback write_callback;
result =
socket.Write(write_buffer.get(), write_buffer->size(),
write_callback.callback(), TRAFFIC_ANNOTATION_FOR_TESTS);
write_callback.GetResult(result);
EXPECT_TRUE(socket.WasEverUsed());
socket.Disconnect();
EXPECT_FALSE(socket.IsConnected());
EXPECT_TRUE(socket.WasEverUsed());
// Re-use the socket, which should set WasEverUsed to false.
EXPECT_THAT(socket.Bind(IPEndPoint(lo_address, 0)), IsOk());
TestCompletionCallback connect_callback2;
connect_result = socket.Connect(connect_callback2.callback());
EXPECT_FALSE(socket.WasEverUsed());
}
// Tests that DNS aliases can be stored in a socket for reuse.
TEST_P(TCPClientSocketTest, DnsAliasesPersistForReuse) {
IPAddress lo_address = IPAddress::IPv4Localhost();
TCPServerSocket server(nullptr, NetLogSource());
ASSERT_THAT(
server.Listen(IPEndPoint(lo_address, 0), 1, /*ipv6_only=*/std::nullopt),
IsOk());
IPEndPoint server_address;
ASSERT_THAT(server.GetLocalAddress(&server_address), IsOk());
// Create a socket.
TCPClientSocket socket(AddressList(server_address), nullptr, nullptr, nullptr,
NetLogSource());
EXPECT_FALSE(socket.WasEverUsed());
EXPECT_THAT(socket.Bind(IPEndPoint(lo_address, 0)), IsOk());
// The socket's DNS aliases are unset.
EXPECT_TRUE(socket.GetDnsAliases().empty());
// Set the aliases.
std::set<std::string> dns_aliases({"alias1", "alias2", "host"});
socket.SetDnsAliases(dns_aliases);
// Verify that the aliases are set.
EXPECT_THAT(socket.GetDnsAliases(),
testing::UnorderedElementsAre("alias1", "alias2", "host"));
// Connect the socket.
TestCompletionCallback connect_callback;
int connect_result = socket.Connect(connect_callback.callback());
EXPECT_FALSE(socket.WasEverUsed());
TestCompletionCallback accept_callback;
std::unique_ptr<StreamSocket> accepted_socket;
int result = server.Accept(&accepted_socket, accept_callback.callback());
ASSERT_THAT(accept_callback.GetResult(result), IsOk());
EXPECT_THAT(connect_callback.GetResult(connect_result), IsOk());
EXPECT_FALSE(socket.WasEverUsed());
EXPECT_TRUE(socket.IsConnected());
// Write some data to the socket to set WasEverUsed, so that the
// socket can be re-used.
const char kRequest[] = "GET / HTTP/1.0";
auto write_buffer = base::MakeRefCounted<StringIOBuffer>(kRequest);
TestCompletionCallback write_callback;
result =
socket.Write(write_buffer.get(), write_buffer->size(),
write_callback.callback(), TRAFFIC_ANNOTATION_FOR_TESTS);
write_callback.GetResult(result);
EXPECT_TRUE(socket.WasEverUsed());
socket.Disconnect();
EXPECT_FALSE(socket.IsConnected());
EXPECT_TRUE(socket.WasEverUsed());
// Re-use the socket, and verify that the aliases are still set.
EXPECT_THAT(socket.Bind(IPEndPoint(lo_address, 0)), IsOk());
TestCompletionCallback connect_callback2;
connect_result = socket.Connect(connect_callback2.callback());
EXPECT_FALSE(socket.WasEverUsed());
EXPECT_THAT(socket.GetDnsAliases(),
testing::ElementsAre("alias1", "alias2", "host"));
}
TEST_P(TCPClientSocketTest, BlockRestrictedAddress) {
base::HistogramTester histogram_tester;
base::test::ScopedFeatureList feature_list;
IPAddress lo_address = IPAddress::IPv4Localhost();
TCPServerSocket server(nullptr, NetLogSource());
ASSERT_THAT(
server.Listen(IPEndPoint(lo_address, 0), 1, /*ipv6_only=*/std::nullopt),
IsOk());
IPEndPoint server_address;
ASSERT_THAT(server.GetLocalAddress(&server_address), IsOk());
feature_list.InitAndEnableFeatureWithParameters(
features::kRestrictAbusePortsOnLocalhost,
{{"localhost_restrict_ports",
base::NumberToString(server_address.port())}});
ReloadLocalhostRestrictedPortsForTesting();
TCPClientSocket socket(AddressList(server_address), nullptr, nullptr, nullptr,
NetLogSource());
TestCompletionCallback connect_callback;
int connect_result = socket.Connect(connect_callback.callback());
EXPECT_THAT(connect_callback.GetResult(connect_result),
IsError(ERR_UNSAFE_PORT));
histogram_tester.ExpectTotalCount("Net.RestrictedLocalhostPorts", 1);
histogram_tester.ExpectBucketCount("Net.RestrictedLocalhostPorts",
server_address.port(), 1);
}
class TestSocketPerformanceWatcher : public SocketPerformanceWatcher {
public:
TestSocketPerformanceWatcher() = default;
TestSocketPerformanceWatcher(const TestSocketPerformanceWatcher&) = delete;
TestSocketPerformanceWatcher& operator=(const TestSocketPerformanceWatcher&) =
delete;
~TestSocketPerformanceWatcher() override = default;
bool ShouldNotifyUpdatedRTT() const override { return true; }
void OnUpdatedRTTAvailable(const base::TimeDelta& rtt) override {}
void OnConnectionChanged() override { connection_changed_count_++; }
size_t connection_changed_count() const { return connection_changed_count_; }
private:
size_t connection_changed_count_ = 0u;
};
// TestSocketPerformanceWatcher requires kernel support for tcp_info struct, and
// so it is enabled only on certain platforms.
#if defined(TCP_INFO) || BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
#define MAYBE_TestSocketPerformanceWatcher TestSocketPerformanceWatcher
#else
#define MAYBE_TestSocketPerformanceWatcher TestSocketPerformanceWatcher
#endif
// Tests if the socket performance watcher is notified if the same socket is
// used for a different connection.
TEST_P(TCPClientSocketTest, MAYBE_TestSocketPerformanceWatcher) {
const size_t kNumIPs = 2;
IPAddressList ip_list;
for (size_t i = 0; i < kNumIPs; ++i)
ip_list.push_back(IPAddress(72, 14, 213, i));
auto watcher = std::make_unique<TestSocketPerformanceWatcher>();
TestSocketPerformanceWatcher* watcher_ptr = watcher.get();
std::vector<std::string> aliases({"example.com"});
TCPClientSocket socket(
AddressList::CreateFromIPAddressList(ip_list, std::move(aliases)),
std::move(watcher), nullptr, nullptr, NetLogSource());
EXPECT_THAT(socket.Bind(IPEndPoint(IPAddress::IPv4Localhost(), 0)), IsOk());
TestCompletionCallback connect_callback;
ASSERT_NE(OK, connect_callback.GetResult(
socket.Connect(connect_callback.callback())));
EXPECT_EQ(kNumIPs - 1, watcher_ptr->connection_changed_count());
}
// On Android, where socket tagging is supported, verify that
// TCPClientSocket::Tag works as expected.
#if BUILDFLAG(IS_ANDROID)
TEST_P(TCPClientSocketTest, Tag) {
if (!CanGetTaggedBytes()) {
DVLOG(0) << "Skipping test - GetTaggedBytes unsupported.";
return;
}
// Start test server.
EmbeddedTestServer test_server;
test_server.AddDefaultHandlers(base::FilePath());
ASSERT_TRUE(test_server.Start());
AddressList addr_list;
ASSERT_TRUE(test_server.GetAddressList(&addr_list));
TCPClientSocket s(addr_list, nullptr, nullptr, nullptr, NetLogSource());
// Verify TCP connect packets are tagged and counted properly.
int32_t tag_val1 = 0x12345678;
uint64_t old_traffic = GetTaggedBytes(tag_val1);
SocketTag tag1(SocketTag::UNSET_UID, tag_val1);
s.ApplySocketTag(tag1);
TestCompletionCallback connect_callback;
int connect_result = s.Connect(connect_callback.callback());
EXPECT_THAT(connect_callback.GetResult(connect_result), IsOk());
EXPECT_GT(GetTaggedBytes(tag_val1), old_traffic);
// Verify socket can be retagged with a new value and the current process's
// UID.
int32_t tag_val2 = 0x87654321;
old_traffic = GetTaggedBytes(tag_val2);
SocketTag tag2(getuid(), tag_val2);
s.ApplySocketTag(tag2);
const std::string kRequest1 = "GET / HTTP/1.0";
auto write_buffer1 = base::MakeRefCounted<StringIOBuffer>(kRequest1);
TestCompletionCallback write_callback1;
EXPECT_EQ(s.Write(write_buffer1.get(), write_buffer1->size(),
write_callback1.callback(), TRAFFIC_ANNOTATION_FOR_TESTS),
static_cast<int>(kRequest1.size()));
EXPECT_GT(GetTaggedBytes(tag_val2), old_traffic);
// Verify socket can be retagged with a new value and the current process's
// UID.
old_traffic = GetTaggedBytes(tag_val1);
s.ApplySocketTag(tag1);
const std::string kRequest2 = "\n\n";
auto write_buffer2 = base::MakeRefCounted<StringIOBuffer>(kRequest2);
TestCompletionCallback write_callback2;
EXPECT_EQ(s.Write(write_buffer2.get(), write_buffer2->size(),
write_callback2.callback(), TRAFFIC_ANNOTATION_FOR_TESTS),
static_cast<int>(kRequest2.size()));
EXPECT_GT(GetTaggedBytes(tag_val1), old_traffic);
s.Disconnect();
}
TEST_P(TCPClientSocketTest, TagAfterConnect) {
if (!CanGetTaggedBytes()) {
DVLOG(0) << "Skipping test - GetTaggedBytes unsupported.";
return;
}
// Start test server.
EmbeddedTestServer test_server;
test_server.AddDefaultHandlers(base::FilePath());
ASSERT_TRUE(test_server.Start());
AddressList addr_list;
ASSERT_TRUE(test_server.GetAddressList(&addr_list));
TCPClientSocket s(addr_list, nullptr, nullptr, nullptr, NetLogSource());
// Connect socket.
TestCompletionCallback connect_callback;
int connect_result = s.Connect(connect_callback.callback());
EXPECT_THAT(connect_callback.GetResult(connect_result), IsOk());
// Verify socket can be tagged with a new value and the current process's
// UID.
int32_t tag_val2 = 0x87654321;
uint64_t old_traffic = GetTaggedBytes(tag_val2);
SocketTag tag2(getuid(), tag_val2);
s.ApplySocketTag(tag2);
const char kRequest1[] = "GET / HTTP/1.0";
auto write_buffer1 = base::MakeRefCounted<StringIOBuffer>(kRequest1);
TestCompletionCallback write_callback1;
EXPECT_EQ(s.Write(write_buffer1.get(), strlen(kRequest1),
write_callback1.callback(), TRAFFIC_ANNOTATION_FOR_TESTS),
static_cast<int>(strlen(kRequest1)));
EXPECT_GT(GetTaggedBytes(tag_val2), old_traffic);
// Verify socket can be retagged with a new value and the current process's
// UID.
int32_t tag_val1 = 0x12345678;
old_traffic = GetTaggedBytes(tag_val1);
SocketTag tag1(SocketTag::UNSET_UID, tag_val1);
s.ApplySocketTag(tag1);
const char kRequest2[] = "\n\n";
auto write_buffer2 = base::MakeRefCounted<StringIOBuffer>(kRequest2);
TestCompletionCallback write_callback2;
EXPECT_EQ(s.Write(write_buffer2.get(), strlen(kRequest2),
write_callback2.callback(), TRAFFIC_ANNOTATION_FOR_TESTS),
static_cast<int>(strlen(kRequest2)));
EXPECT_GT(GetTaggedBytes(tag_val1), old_traffic);
s.Disconnect();
}
#endif // BUILDFLAG(IS_ANDROID)
// TCP socket that hangs indefinitely when establishing a connection.
class NeverConnectingTCPClientSocket : public TCPClientSocket {
public:
NeverConnectingTCPClientSocket(
const AddressList& addresses,
std::unique_ptr<SocketPerformanceWatcher> socket_performance_watcher,
NetworkQualityEstimator* network_quality_estimator,
net::NetLog* net_log,
const net::NetLogSource& source)
: TCPClientSocket(addresses,
std::move(socket_performance_watcher),
network_quality_estimator,
net_log,
source) {}
// Returns the number of times that ConnectInternal() was called.
int connect_internal_counter() const { return connect_internal_counter_; }
private:
int ConnectInternal(const IPEndPoint& endpoint) override {
connect_internal_counter_++;
return ERR_IO_PENDING;
}
int connect_internal_counter_ = 0;
};
// Tests for closing sockets on suspend mode.
#if defined(TCP_CLIENT_SOCKET_OBSERVES_SUSPEND)
// Entering suspend mode shouldn't affect sockets that haven't connected yet, or
// listening server sockets.
TEST_P(TCPClientSocketTest, SuspendBeforeConnect) {
IPAddress lo_address = IPAddress::IPv4Localhost();
TCPServerSocket server(nullptr, NetLogSource());
ASSERT_THAT(
server.Listen(IPEndPoint(lo_address, 0), 1, /*ipv6_only=*/std::nullopt),
IsOk());
IPEndPoint server_address;
ASSERT_THAT(server.GetLocalAddress(&server_address), IsOk());
TCPClientSocket socket(AddressList(server_address), nullptr, nullptr, nullptr,
NetLogSource());
EXPECT_THAT(socket.Bind(IPEndPoint(lo_address, 0)), IsOk());
IPEndPoint local_address_result;
EXPECT_THAT(socket.GetLocalAddress(&local_address_result), IsOk());
EXPECT_EQ(lo_address, local_address_result.address());
TestCompletionCallback accept_callback;
std::unique_ptr<StreamSocket> accepted_socket;
ASSERT_THAT(server.Accept(&accepted_socket, accept_callback.callback()),
IsError(ERR_IO_PENDING));
Suspend();
// Power notifications happen asynchronously, so have to wait for the socket
// to be notified of the suspend event.
base::RunLoop().RunUntilIdle();
TestCompletionCallback connect_callback;
int connect_result = socket.Connect(connect_callback.callback());
ASSERT_THAT(accept_callback.WaitForResult(), IsOk());
ASSERT_THAT(connect_callback.GetResult(connect_result), IsOk());
EXPECT_TRUE(socket.IsConnected());
EXPECT_TRUE(accepted_socket->IsConnected());
}
TEST_P(TCPClientSocketTest, SuspendDuringConnect) {
IPAddress lo_address = IPAddress::IPv4Localhost();
TCPServerSocket server(nullptr, NetLogSource());
ASSERT_THAT(
server.Listen(IPEndPoint(lo_address, 0), 1, /*ipv6_only=*/std::nullopt),
IsOk());
IPEndPoint server_address;
ASSERT_THAT(server.GetLocalAddress(&server_address), IsOk());
NeverConnectingTCPClientSocket socket(AddressList(server_address), nullptr,
nullptr, nullptr, NetLogSource());
EXPECT_THAT(socket.Bind(IPEndPoint(lo_address, 0)), IsOk());
IPEndPoint local_address_result;
EXPECT_THAT(socket.GetLocalAddress(&local_address_result), IsOk());
EXPECT_EQ(lo_address, local_address_result.address());
TestCompletionCallback connect_callback;
int rv = socket.Connect(connect_callback.callback());
ASSERT_THAT(rv, IsError(ERR_IO_PENDING));
Suspend();
EXPECT_THAT(connect_callback.WaitForResult(),
IsError(ERR_NETWORK_IO_SUSPENDED));
}
TEST_P(TCPClientSocketTest, SuspendDuringConnectMultipleAddresses) {
IPAddress lo_address = IPAddress::IPv4Localhost();
TCPServerSocket server(nullptr, NetLogSource());
ASSERT_THAT(server.Listen(IPEndPoint(IPAddress(0, 0, 0, 0), 0), 1,
/*ipv6_only=*/std::nullopt),
IsOk());
IPEndPoint server_address;
ASSERT_THAT(server.GetLocalAddress(&server_address), IsOk());
AddressList address_list;
address_list.push_back(
IPEndPoint(IPAddress(127, 0, 0, 1), server_address.port()));
address_list.push_back(
IPEndPoint(IPAddress(127, 0, 0, 2), server_address.port()));
NeverConnectingTCPClientSocket socket(address_list, nullptr, nullptr, nullptr,
NetLogSource());
EXPECT_THAT(socket.Bind(IPEndPoint(lo_address, 0)), IsOk());
IPEndPoint local_address_result;
EXPECT_THAT(socket.GetLocalAddress(&local_address_result), IsOk());
EXPECT_EQ(lo_address, local_address_result.address());
TestCompletionCallback connect_callback;
int rv = socket.Connect(connect_callback.callback());
ASSERT_THAT(rv, IsError(ERR_IO_PENDING));
Suspend();
EXPECT_THAT(connect_callback.WaitForResult(),
IsError(ERR_NETWORK_IO_SUSPENDED));
}
TEST_P(TCPClientSocketTest, SuspendWhileIdle) {
std::unique_ptr<StreamSocket> accepted_socket;
std::unique_ptr<TCPClientSocket> client_socket;
std::unique_ptr<ServerSocket> server_socket;
CreateConnectedSockets(&accepted_socket, &client_socket, &server_socket);
Suspend();
// Power notifications happen asynchronously.
base::RunLoop().RunUntilIdle();
auto buffer = base::MakeRefCounted<IOBufferWithSize>(1);
buffer->data()[0] = '1';
TestCompletionCallback callback;
// Check that the client socket is disconnected, and actions fail with
// ERR_NETWORK_IO_SUSPENDED.
EXPECT_FALSE(client_socket->IsConnected());
EXPECT_THAT(client_socket->Read(buffer.get(), 1, callback.callback()),
IsError(ERR_NETWORK_IO_SUSPENDED));
EXPECT_THAT(client_socket->Write(buffer.get(), 1, callback.callback(),
TRAFFIC_ANNOTATION_FOR_TESTS),
IsError(ERR_NETWORK_IO_SUSPENDED));
// Check that the accepted socket is disconnected, and actions fail with
// ERR_NETWORK_IO_SUSPENDED.
EXPECT_FALSE(accepted_socket->IsConnected());
EXPECT_THAT(accepted_socket->Read(buffer.get(), 1, callback.callback()),
IsError(ERR_NETWORK_IO_SUSPENDED));
EXPECT_THAT(accepted_socket->Write(buffer.get(), 1, callback.callback(),
TRAFFIC_ANNOTATION_FOR_TESTS),
IsError(ERR_NETWORK_IO_SUSPENDED));
// Reconnecting the socket should work.
TestCompletionCallback connect_callback;
int connect_result = client_socket->Connect(connect_callback.callback());
accepted_socket.reset();
TestCompletionCallback accept_callback;
int accept_result =
server_socket->Accept(&accepted_socket, accept_callback.callback());
ASSERT_THAT(accept_callback.GetResult(accept_result), IsOk());
EXPECT_THAT(connect_callback.GetResult(connect_result), IsOk());
}
TEST_P(TCPClientSocketTest, SuspendDuringRead) {
std::unique_ptr<StreamSocket> accepted_socket;
std::unique_ptr<TCPClientSocket> client_socket;
CreateConnectedSockets(&accepted_socket, &client_socket);
// Start a read. This shouldn't complete, since the other end of the pipe
// writes no data.
auto read_buffer = base::MakeRefCounted<IOBufferWithSize>(1);
read_buffer->data()[0] = '1';
TestCompletionCallback callback;
ASSERT_THAT(client_socket->Read(read_buffer.get(), 1, callback.callback()),
IsError(ERR_IO_PENDING));
// Simulate a suspend event. Can't use a real power event, as it would affect
// |accepted_socket| as well.
client_socket->OnSuspend();
EXPECT_THAT(callback.WaitForResult(), IsError(ERR_NETWORK_IO_SUSPENDED));
// Check that the client socket really is disconnected.
EXPECT_FALSE(client_socket->IsConnected());
EXPECT_THAT(client_socket->Read(read_buffer.get(), 1, callback.callback()),
IsError(ERR_NETWORK_IO_SUSPENDED));
EXPECT_THAT(client_socket->Write(read_buffer.get(), 1, callback.callback(),
TRAFFIC_ANNOTATION_FOR_TESTS),
IsError(ERR_NETWORK_IO_SUSPENDED));
}
TEST_P(TCPClientSocketTest, SuspendDuringWrite) {
std::unique_ptr<StreamSocket> accepted_socket;
std::unique_ptr<TCPClientSocket> client_socket;
CreateConnectedSockets(&accepted_socket, &client_socket);
// Write to the socket until a write doesn't complete synchronously.
const int kBufferSize = 4096;
auto write_buffer = base::MakeRefCounted<VectorIOBuffer>(
std::vector<uint8_t>(kBufferSize, '1'));
TestCompletionCallback callback;
while (true) {
int rv =
client_socket->Write(write_buffer.get(), kBufferSize,
callback.callback(), TRAFFIC_ANNOTATION_FOR_TESTS);
if (rv == ERR_IO_PENDING)
break;
ASSERT_GT(rv, 0);
}
// Simulate a suspend event. Can't use a real power event, as it would affect
// |accepted_socket| as well.
client_socket->OnSuspend();
EXPECT_THAT(callback.WaitForResult(), IsError(ERR_NETWORK_IO_SUSPENDED));
// Check that the client socket really is disconnected.
EXPECT_FALSE(client_socket->IsConnected());
EXPECT_THAT(client_socket->Read(write_buffer.get(), 1, callback.callback()),
IsError(ERR_NETWORK_IO_SUSPENDED));
EXPECT_THAT(client_socket->Write(write_buffer.get(), 1, callback.callback(),
TRAFFIC_ANNOTATION_FOR_TESTS),
IsError(ERR_NETWORK_IO_SUSPENDED));
}
TEST_P(TCPClientSocketTest, SuspendDuringReadAndWrite) {
enum class ReadCallbackAction {
kNone,
kDestroySocket,
kDisconnectSocket,
kReconnectSocket,
};
for (ReadCallbackAction read_callback_action : {
ReadCallbackAction::kNone,
ReadCallbackAction::kDestroySocket,
ReadCallbackAction::kDisconnectSocket,
ReadCallbackAction::kReconnectSocket,
}) {
std::unique_ptr<StreamSocket> accepted_socket;
std::unique_ptr<TCPClientSocket> client_socket;
std::unique_ptr<ServerSocket> server_socket;
CreateConnectedSockets(&accepted_socket, &client_socket, &server_socket);
// Start a read. This shouldn't complete, since the other end of the pipe
// writes no data.
auto read_buffer = base::MakeRefCounted<IOBufferWithSize>(1);
read_buffer->data()[0] = '1';
TestCompletionCallback read_callback;
// Used int the ReadCallbackAction::kReconnectSocket case, since can't run a
// nested message loop in the read callback.
TestCompletionCallback nested_connect_callback;
int nested_connect_result;
CompletionOnceCallback read_completion_once_callback =
base::BindLambdaForTesting([&](int result) {
EXPECT_FALSE(client_socket->IsConnected());
switch (read_callback_action) {
case ReadCallbackAction::kNone:
break;
case ReadCallbackAction::kDestroySocket:
client_socket.reset();
break;
case ReadCallbackAction::kDisconnectSocket:
client_socket->Disconnect();
break;
case ReadCallbackAction::kReconnectSocket: {
TestCompletionCallback connect_callback;
nested_connect_result =
client_socket->Connect(nested_connect_callback.callback());
break;
}
}
read_callback.callback().Run(result);
});
ASSERT_THAT(client_socket->Read(read_buffer.get(), 1,
std::move(read_completion_once_callback)),
IsError(ERR_IO_PENDING));
// Write to the socket until a write doesn't complete synchronously.
const int kBufferSize = 4096;
auto write_buffer = base::MakeRefCounted<VectorIOBuffer>(
std::vector<uint8_t>(kBufferSize, '1'));
TestCompletionCallback write_callback;
while (true) {
int rv = client_socket->Write(write_buffer.get(), kBufferSize,
write_callback.callback(),
TRAFFIC_ANNOTATION_FOR_TESTS);
if (rv == ERR_IO_PENDING)
break;
ASSERT_GT(rv, 0);
}
// Simulate a suspend event. Can't use a real power event, as it would
// affect |accepted_socket| as well.
client_socket->OnSuspend();
EXPECT_THAT(read_callback.WaitForResult(),
IsError(ERR_NETWORK_IO_SUSPENDED));
if (read_callback_action == ReadCallbackAction::kNone) {
EXPECT_THAT(write_callback.WaitForResult(),
IsError(ERR_NETWORK_IO_SUSPENDED));
// Check that the client socket really is disconnected.
EXPECT_FALSE(client_socket->IsConnected());
EXPECT_THAT(
client_socket->Read(read_buffer.get(), 1, read_callback.callback()),
IsError(ERR_NETWORK_IO_SUSPENDED));
EXPECT_THAT(
client_socket->Write(write_buffer.get(), 1, write_callback.callback(),
TRAFFIC_ANNOTATION_FOR_TESTS),
IsError(ERR_NETWORK_IO_SUSPENDED));
} else {
// Each of the actions taken in the read callback will cancel the pending
// write callback.
EXPECT_FALSE(write_callback.have_result());
}
if (read_callback_action == ReadCallbackAction::kReconnectSocket) {
// Finish establishing a connection, just to make sure the reconnect case
// completely works.
accepted_socket.reset();
TestCompletionCallback accept_callback;
int accept_result =
server_socket->Accept(&accepted_socket, accept_callback.callback());
ASSERT_THAT(accept_callback.GetResult(accept_result), IsOk());
EXPECT_THAT(nested_connect_callback.GetResult(nested_connect_result),
IsOk());
}
}
}
#endif // defined(TCP_CLIENT_SOCKET_OBSERVES_SUSPEND)
INSTANTIATE_TEST_SUITE_P(Any,
TCPClientSocketTest,
::testing::Values(false
#if BUILDFLAG(IS_WIN)
,
true
#endif
),
[](::testing::TestParamInfo<bool> info) {
if (info.param) {
return "TcpSocketIoCompletionPortWin";
}
return "Base";
});
// Scoped helper to override the TCP connect attempt policy.
class OverrideTcpConnectAttemptTimeout {
public:
OverrideTcpConnectAttemptTimeout(double rtt_multipilier,
base::TimeDelta min_timeout,
base::TimeDelta max_timeout) {
base::FieldTrialParams params;
params[features::kTimeoutTcpConnectAttemptRTTMultiplier.name] =
base::NumberToString(rtt_multipilier);
params[features::kTimeoutTcpConnectAttemptMin.name] =
base::NumberToString(min_timeout.InMilliseconds()) + "ms";
params[features::kTimeoutTcpConnectAttemptMax.name] =
base::NumberToString(max_timeout.InMilliseconds()) + "ms";
scoped_feature_list_.InitAndEnableFeatureWithParameters(
features::kTimeoutTcpConnectAttempt, params);
}
private:
base::test::ScopedFeatureList scoped_feature_list_;
};
// Test fixture that uses a MOCK_TIME test environment, so time can
// be advanced programmatically.
class TCPClientSocketMockTimeTest : public testing::Test {
public:
TCPClientSocketMockTimeTest()
: task_environment_(base::test::TaskEnvironment::MainThreadType::IO,
base::test::TaskEnvironment::TimeSource::MOCK_TIME) {}
protected:
base::test::TaskEnvironment task_environment_;
};
// Tests that no TCP connect timeout is enforced by default (i.e.
// when the feature is disabled).
TEST_F(TCPClientSocketMockTimeTest, NoConnectAttemptTimeoutByDefault) {
IPEndPoint server_address(IPAddress::IPv4Localhost(), 80);
NeverConnectingTCPClientSocket socket(AddressList(server_address), nullptr,
nullptr, nullptr, NetLogSource());
TestCompletionCallback connect_callback;
int rv = socket.Connect(connect_callback.callback());
ASSERT_THAT(rv, IsError(ERR_IO_PENDING));
// After 4 minutes, the socket should still be connecting.
task_environment_.FastForwardBy(base::Minutes(4));
EXPECT_FALSE(connect_callback.have_result());
EXPECT_FALSE(socket.IsConnected());
// 1 attempt was made.
EXPECT_EQ(1, socket.connect_internal_counter());
}
// Tests that the maximum timeout is used when there is no estimated
// RTT.
TEST_F(TCPClientSocketMockTimeTest, ConnectAttemptTimeoutUsesMaxWhenNoRTT) {
OverrideTcpConnectAttemptTimeout override_timeout(1, base::Seconds(4),
base::Seconds(10));
IPEndPoint server_address(IPAddress::IPv4Localhost(), 80);
// Pass a null NetworkQualityEstimator, so the TCPClientSocket is unable to
// estimate the RTT.
NeverConnectingTCPClientSocket socket(AddressList(server_address), nullptr,
nullptr, nullptr, NetLogSource());
// Start connecting.
TestCompletionCallback connect_callback;
int rv = socket.Connect(connect_callback.callback());
ASSERT_THAT(rv, IsError(ERR_IO_PENDING));
// Advance to t=3.1s
// Should still be pending, as this is before the minimum timeout.
task_environment_.FastForwardBy(base::Milliseconds(3100));
EXPECT_FALSE(connect_callback.have_result());
EXPECT_FALSE(socket.IsConnected());
// Advance to t=4.1s
// Should still be pending. This is after the minimum timeout, but before the
// maximum.
task_environment_.FastForwardBy(base::Seconds(1));
EXPECT_FALSE(connect_callback.have_result());
EXPECT_FALSE(socket.IsConnected());
// Advance to t=10.1s
// Should now be timed out, as this is after the maximum timeout.
task_environment_.FastForwardBy(base::Seconds(6));
rv = connect_callback.GetResult(rv);
ASSERT_THAT(rv, IsError(ERR_TIMED_OUT));
// 1 attempt was made.
EXPECT_EQ(1, socket.connect_internal_counter());
}
// Tests that the minimum timeout is used when the adaptive timeout using RTT
// ends up being too low.
TEST_F(TCPClientSocketMockTimeTest, ConnectAttemptTimeoutUsesMinWhenRTTLow) {
OverrideTcpConnectAttemptTimeout override_timeout(5, base::Seconds(4),
base::Seconds(10));
// Set the estimated RTT to 1 millisecond.
TestNetworkQualityEstimator network_quality_estimator;
network_quality_estimator.SetStartTimeNullTransportRtt(base::Milliseconds(1));
IPEndPoint server_address(IPAddress::IPv4Localhost(), 80);
NeverConnectingTCPClientSocket socket(AddressList(server_address), nullptr,
&network_quality_estimator, nullptr,
NetLogSource());
// Start connecting.
TestCompletionCallback connect_callback;
int rv = socket.Connect(connect_callback.callback());
ASSERT_THAT(rv, IsError(ERR_IO_PENDING));
// Advance to t=1.1s
// Should be pending, since although the adaptive timeout has been reached, it
// is lower than the minimum timeout.
task_environment_.FastForwardBy(base::Milliseconds(1100));
EXPECT_FALSE(connect_callback.have_result());
EXPECT_FALSE(socket.IsConnected());
// Advance to t=4.1s
// Should have timed out due to hitting the minimum timeout.
task_environment_.FastForwardBy(base::Seconds(3));
rv = connect_callback.GetResult(rv);
ASSERT_THAT(rv, IsError(ERR_TIMED_OUT));
// 1 attempt was made.
EXPECT_EQ(1, socket.connect_internal_counter());
}
// Tests that the maximum timeout is used when the adaptive timeout from RTT is
// too high.
TEST_F(TCPClientSocketMockTimeTest, ConnectAttemptTimeoutUsesMinWhenRTTHigh) {
OverrideTcpConnectAttemptTimeout override_timeout(5, base::Seconds(4),
base::Seconds(10));
// Set the estimated RTT to 5 seconds.
TestNetworkQualityEstimator network_quality_estimator;
network_quality_estimator.SetStartTimeNullTransportRtt(base::Seconds(5));
IPEndPoint server_address(IPAddress::IPv4Localhost(), 80);
NeverConnectingTCPClientSocket socket(AddressList(server_address), nullptr,
&network_quality_estimator, nullptr,
NetLogSource());
// Start connecting.
TestCompletionCallback connect_callback;
int rv = socket.Connect(connect_callback.callback());
ASSERT_THAT(rv, IsError(ERR_IO_PENDING));
// Advance to t=10.1s
// The socket should have timed out due to hitting the maximum timeout. Had
// the adaptive timeout been used, the socket would instead be timing out at
// t=25s.
task_environment_.FastForwardBy(base::Milliseconds(10100));
rv = connect_callback.GetResult(rv);
ASSERT_THAT(rv, IsError(ERR_TIMED_OUT));
// 1 attempt was made.
EXPECT_EQ(1, socket.connect_internal_counter());
}
// Tests that an adaptive timeout is used for TCP connection attempts based on
// the estimated RTT.
TEST_F(TCPClientSocketMockTimeTest, ConnectAttemptTimeoutUsesRTT) {
OverrideTcpConnectAttemptTimeout override_timeout(5, base::Seconds(4),
base::Seconds(10));
// Set the estimated RTT to 1 second. Since the multiplier is set to 5, the
// total adaptive timeout will be 5 seconds.
TestNetworkQualityEstimator network_quality_estimator;
network_quality_estimator.SetStartTimeNullTransportRtt(base::Seconds(1));
IPEndPoint server_address(IPAddress::IPv4Localhost(), 80);
NeverConnectingTCPClientSocket socket(AddressList(server_address), nullptr,
&network_quality_estimator, nullptr,
NetLogSource());
// Start connecting.
TestCompletionCallback connect_callback;
int rv = socket.Connect(connect_callback.callback());
ASSERT_THAT(rv, IsError(ERR_IO_PENDING));
// Advance to t=4.1s
// The socket should still be pending. Had the minimum timeout been enforced,
// it would instead have timed out now.
task_environment_.FastForwardBy(base::Milliseconds(4100));
EXPECT_FALSE(connect_callback.have_result());
EXPECT_FALSE(socket.IsConnected());
// Advance to t=5.1s
// The adaptive timeout was at t=5s, so it should now be timed out.
task_environment_.FastForwardBy(base::Seconds(1));
rv = connect_callback.GetResult(rv);
ASSERT_THAT(rv, IsError(ERR_TIMED_OUT));
// 1 attempt was made.
EXPECT_EQ(1, socket.connect_internal_counter());
}
// Tests that when multiple TCP connect attempts are made, the timeout for each
// one is applied independently.
TEST_F(TCPClientSocketMockTimeTest, ConnectAttemptTimeoutIndependent) {
OverrideTcpConnectAttemptTimeout override_timeout(5, base::Seconds(4),
base::Seconds(10));
// This test will attempt connecting to 5 endpoints.
const size_t kNumIps = 5;
AddressList addresses;
for (size_t i = 0; i < kNumIps; ++i)
addresses.push_back(IPEndPoint(IPAddress::IPv4Localhost(), 80 + i));
NeverConnectingTCPClientSocket socket(addresses, nullptr, nullptr, nullptr,
NetLogSource());
// Start connecting.
TestCompletionCallback connect_callback;
int rv = socket.Connect(connect_callback.callback());
ASSERT_THAT(rv, IsError(ERR_IO_PENDING));
// Advance to t=49s
// Should still be pending.
task_environment_.FastForwardBy(base::Seconds(49));
EXPECT_FALSE(connect_callback.have_result());
EXPECT_FALSE(socket.IsConnected());
// Advance to t=50.1s
// All attempts should take 50 seconds to complete (5 attempts, 10 seconds
// each). So by this point the overall connect attempt will have timed out.
task_environment_.FastForwardBy(base::Milliseconds(1100));
rv = connect_callback.GetResult(rv);
ASSERT_THAT(rv, IsError(ERR_TIMED_OUT));
// 5 attempts were made.
EXPECT_EQ(5, socket.connect_internal_counter());
}
} // namespace
} // namespace net
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