1 /*
2 * Copyright 2017 The WebRTC project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
11 #include "rtc_tools/network_tester/test_controller.h"
12
13 #include <limits>
14
15 #include "absl/types/optional.h"
16 #include "rtc_base/checks.h"
17 #include "rtc_base/internal/default_socket_server.h"
18 #include "rtc_base/ip_address.h"
19 #include "rtc_base/logging.h"
20 #include "rtc_base/thread.h"
21
22 namespace webrtc {
23
TestController(int min_port,int max_port,const std::string & config_file_path,const std::string & log_file_path)24 TestController::TestController(int min_port,
25 int max_port,
26 const std::string& config_file_path,
27 const std::string& log_file_path)
28 : socket_server_(rtc::CreateDefaultSocketServer()),
29 packet_sender_thread_(
30 std::make_unique<rtc::Thread>(socket_server_.get())),
31 socket_factory_(socket_server_.get()),
32 config_file_path_(config_file_path),
33 packet_logger_(log_file_path),
34 local_test_done_(false),
35 remote_test_done_(false),
36 task_safety_flag_(PendingTaskSafetyFlag::CreateDetached()) {
37 RTC_DCHECK_RUN_ON(&test_controller_thread_checker_);
38 send_data_.fill(42);
39 packet_sender_thread_->SetName("PacketSender", nullptr);
40 packet_sender_thread_->Start();
41 packet_sender_thread_->BlockingCall([&] {
42 RTC_DCHECK_RUN_ON(packet_sender_thread_.get());
43 udp_socket_ =
44 std::unique_ptr<rtc::AsyncPacketSocket>(socket_factory_.CreateUdpSocket(
45 rtc::SocketAddress(rtc::GetAnyIP(AF_INET), 0), min_port, max_port));
46 udp_socket_->SignalReadPacket.connect(this, &TestController::OnReadPacket);
47 });
48 }
49
~TestController()50 TestController::~TestController() {
51 RTC_DCHECK_RUN_ON(&test_controller_thread_checker_);
52 packet_sender_thread_->BlockingCall(
53 [this]() { task_safety_flag_->SetNotAlive(); });
54 }
55
SendConnectTo(const std::string & hostname,int port)56 void TestController::SendConnectTo(const std::string& hostname, int port) {
57 RTC_DCHECK_RUN_ON(&test_controller_thread_checker_);
58 remote_address_ = rtc::SocketAddress(hostname, port);
59 NetworkTesterPacket packet;
60 packet.set_type(NetworkTesterPacket::HAND_SHAKING);
61 SendData(packet, absl::nullopt);
62 MutexLock scoped_lock(&test_done_lock_);
63 local_test_done_ = false;
64 remote_test_done_ = false;
65 }
66
SendData(const NetworkTesterPacket & packet,absl::optional<size_t> data_size)67 void TestController::SendData(const NetworkTesterPacket& packet,
68 absl::optional<size_t> data_size) {
69 if (!packet_sender_thread_->IsCurrent()) {
70 packet_sender_thread_->PostTask(SafeTask(
71 task_safety_flag_,
72 [this, packet, data_size]() { this->SendData(packet, data_size); }));
73 return;
74 }
75 RTC_DCHECK_RUN_ON(packet_sender_thread_.get());
76 RTC_LOG(LS_VERBOSE) << "SendData";
77
78 // Can be call from packet_sender or from test_controller thread.
79 size_t packet_size = packet.ByteSizeLong();
80 send_data_[0] = packet_size;
81 packet_size++;
82 packet.SerializeToArray(&send_data_[1], std::numeric_limits<char>::max());
83 if (data_size && *data_size > packet_size)
84 packet_size = *data_size;
85 udp_socket_->SendTo((const void*)send_data_.data(), packet_size,
86 remote_address_, rtc::PacketOptions());
87 }
88
OnTestDone()89 void TestController::OnTestDone() {
90 RTC_DCHECK_RUN_ON(packet_sender_thread_.get());
91 NetworkTesterPacket packet;
92 packet.set_type(NetworkTesterPacket::TEST_DONE);
93 SendData(packet, absl::nullopt);
94 MutexLock scoped_lock(&test_done_lock_);
95 local_test_done_ = true;
96 }
97
IsTestDone()98 bool TestController::IsTestDone() {
99 RTC_DCHECK_RUN_ON(&test_controller_thread_checker_);
100 MutexLock scoped_lock(&test_done_lock_);
101 return local_test_done_ && remote_test_done_;
102 }
103
OnReadPacket(rtc::AsyncPacketSocket * socket,const char * data,size_t len,const rtc::SocketAddress & remote_addr,const int64_t & packet_time_us)104 void TestController::OnReadPacket(rtc::AsyncPacketSocket* socket,
105 const char* data,
106 size_t len,
107 const rtc::SocketAddress& remote_addr,
108 const int64_t& packet_time_us) {
109 RTC_DCHECK_RUN_ON(packet_sender_thread_.get());
110 RTC_LOG(LS_VERBOSE) << "OnReadPacket";
111 size_t packet_size = data[0];
112 std::string receive_data(&data[1], packet_size);
113 NetworkTesterPacket packet;
114 packet.ParseFromString(receive_data);
115 RTC_CHECK(packet.has_type());
116 switch (packet.type()) {
117 case NetworkTesterPacket::HAND_SHAKING: {
118 NetworkTesterPacket packet;
119 packet.set_type(NetworkTesterPacket::TEST_START);
120 remote_address_ = remote_addr;
121 SendData(packet, absl::nullopt);
122 packet_sender_.reset(new PacketSender(this, packet_sender_thread_.get(),
123 task_safety_flag_,
124 config_file_path_));
125 packet_sender_->StartSending();
126 MutexLock scoped_lock(&test_done_lock_);
127 local_test_done_ = false;
128 remote_test_done_ = false;
129 break;
130 }
131 case NetworkTesterPacket::TEST_START: {
132 packet_sender_.reset(new PacketSender(this, packet_sender_thread_.get(),
133 task_safety_flag_,
134 config_file_path_));
135 packet_sender_->StartSending();
136 MutexLock scoped_lock(&test_done_lock_);
137 local_test_done_ = false;
138 remote_test_done_ = false;
139 break;
140 }
141 case NetworkTesterPacket::TEST_DATA: {
142 packet.set_arrival_timestamp(packet_time_us);
143 packet.set_packet_size(len);
144 packet_logger_.LogPacket(packet);
145 break;
146 }
147 case NetworkTesterPacket::TEST_DONE: {
148 MutexLock scoped_lock(&test_done_lock_);
149 remote_test_done_ = true;
150 break;
151 }
152 default: {
153 RTC_DCHECK_NOTREACHED();
154 }
155 }
156 }
157
158 } // namespace webrtc
159