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/*
* Copyright 2017 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "rtc_tools/network_tester/test_controller.h"
#include <cstddef>
#include <limits>
#include <memory>
#include <optional>
#include <string>
#include "api/sequence_checker.h"
#include "api/task_queue/pending_task_safety_flag.h"
#include "api/units/timestamp.h"
#include "rtc_base/async_packet_socket.h"
#include "rtc_base/checks.h"
#include "rtc_base/internal/default_socket_server.h"
#include "rtc_base/ip_address.h"
#include "rtc_base/logging.h"
#include "rtc_base/net_helpers.h"
#include "rtc_base/network/received_packet.h"
#include "rtc_base/socket_address.h"
#include "rtc_base/synchronization/mutex.h"
#include "rtc_base/thread.h"
#include "rtc_tools/network_tester/packet_sender.h"
namespace webrtc {
TestController::TestController(int min_port,
int max_port,
const std::string& config_file_path,
const std::string& log_file_path)
: socket_server_(CreateDefaultSocketServer()),
packet_sender_thread_(std::make_unique<Thread>(socket_server_.get())),
socket_factory_(socket_server_.get()),
config_file_path_(config_file_path),
packet_logger_(log_file_path),
local_test_done_(false),
remote_test_done_(false),
task_safety_flag_(PendingTaskSafetyFlag::CreateDetached()) {
RTC_DCHECK_RUN_ON(&test_controller_thread_checker_);
send_data_.fill(42);
packet_sender_thread_->SetName("PacketSender", nullptr);
packet_sender_thread_->Start();
packet_sender_thread_->BlockingCall([&] {
RTC_DCHECK_RUN_ON(packet_sender_thread_.get());
udp_socket_ =
std::unique_ptr<AsyncPacketSocket>(socket_factory_.CreateUdpSocket(
SocketAddress(GetAnyIP(AF_INET), 0), min_port, max_port));
RTC_CHECK(udp_socket_ != nullptr);
udp_socket_->RegisterReceivedPacketCallback(
[&](AsyncPacketSocket* socket, const ReceivedIpPacket& packet) {
OnReadPacket(socket, packet);
});
});
}
TestController::~TestController() {
RTC_DCHECK_RUN_ON(&test_controller_thread_checker_);
packet_sender_thread_->BlockingCall(
[this]() { task_safety_flag_->SetNotAlive(); });
}
void TestController::SendConnectTo(const std::string& hostname, int port) {
RTC_DCHECK_RUN_ON(&test_controller_thread_checker_);
remote_address_ = SocketAddress(hostname, port);
NetworkTesterPacket packet;
packet.set_type(NetworkTesterPacket::HAND_SHAKING);
SendData(packet, std::nullopt);
MutexLock scoped_lock(&test_done_lock_);
local_test_done_ = false;
remote_test_done_ = false;
}
void TestController::SendData(const NetworkTesterPacket& packet,
std::optional<size_t> data_size) {
if (!packet_sender_thread_->IsCurrent()) {
packet_sender_thread_->PostTask(SafeTask(
task_safety_flag_,
[this, packet, data_size]() { this->SendData(packet, data_size); }));
return;
}
RTC_DCHECK_RUN_ON(packet_sender_thread_.get());
RTC_LOG(LS_VERBOSE) << "SendData";
// Can be call from packet_sender or from test_controller thread.
size_t packet_size = packet.ByteSizeLong();
send_data_[0] = packet_size;
packet_size++;
packet.SerializeToArray(&send_data_[1], std::numeric_limits<char>::max());
if (data_size && *data_size > packet_size)
packet_size = *data_size;
udp_socket_->SendTo((const void*)send_data_.data(), packet_size,
remote_address_, AsyncSocketPacketOptions());
}
void TestController::OnTestDone() {
RTC_DCHECK_RUN_ON(packet_sender_thread_.get());
NetworkTesterPacket packet;
packet.set_type(NetworkTesterPacket::TEST_DONE);
SendData(packet, std::nullopt);
MutexLock scoped_lock(&test_done_lock_);
local_test_done_ = true;
}
bool TestController::IsTestDone() {
RTC_DCHECK_RUN_ON(&test_controller_thread_checker_);
MutexLock scoped_lock(&test_done_lock_);
return local_test_done_ && remote_test_done_;
}
void TestController::OnReadPacket(AsyncPacketSocket* socket,
const ReceivedIpPacket& received_packet) {
RTC_DCHECK_RUN_ON(packet_sender_thread_.get());
RTC_LOG(LS_VERBOSE) << "OnReadPacket";
size_t packet_size = received_packet.payload()[0];
std::string receive_data(
reinterpret_cast<const char*>(&received_packet.payload()[1]),
packet_size);
NetworkTesterPacket packet;
packet.ParseFromString(receive_data);
RTC_CHECK(packet.has_type());
switch (packet.type()) {
case NetworkTesterPacket::HAND_SHAKING: {
NetworkTesterPacket start_packet;
start_packet.set_type(NetworkTesterPacket::TEST_START);
remote_address_ = received_packet.source_address();
SendData(start_packet, std::nullopt);
packet_sender_.reset(new PacketSender(this, packet_sender_thread_.get(),
task_safety_flag_,
config_file_path_));
packet_sender_->StartSending();
MutexLock scoped_lock(&test_done_lock_);
local_test_done_ = false;
remote_test_done_ = false;
break;
}
case NetworkTesterPacket::TEST_START: {
packet_sender_.reset(new PacketSender(this, packet_sender_thread_.get(),
task_safety_flag_,
config_file_path_));
packet_sender_->StartSending();
MutexLock scoped_lock(&test_done_lock_);
local_test_done_ = false;
remote_test_done_ = false;
break;
}
case NetworkTesterPacket::TEST_DATA: {
packet.set_arrival_timestamp(
received_packet.arrival_time().value_or(Timestamp::Zero()).us());
packet.set_packet_size(received_packet.payload().size());
packet_logger_.LogPacket(packet);
break;
}
case NetworkTesterPacket::TEST_DONE: {
MutexLock scoped_lock(&test_done_lock_);
remote_test_done_ = true;
break;
}
default: {
RTC_DCHECK_NOTREACHED();
}
}
}
} // namespace webrtc
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