| /* |
| * Copyright (c) 2019 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 "media/sctp/sctp_transport.h" |
| |
| #include <memory> |
| #include <queue> |
| #include <string> |
| |
| #include "media/sctp/sctp_transport_internal.h" |
| #include "rtc_base/copy_on_write_buffer.h" |
| #include "rtc_base/gunit.h" |
| #include "rtc_base/logging.h" |
| #include "rtc_base/random.h" |
| #include "rtc_base/synchronization/mutex.h" |
| #include "rtc_base/thread.h" |
| #include "test/gtest.h" |
| |
| namespace { |
| |
| static constexpr int kDefaultTimeout = 10000; // 10 seconds. |
| static constexpr int kTransport1Port = 15001; |
| static constexpr int kTransport2Port = 25002; |
| static constexpr int kLogPerMessagesCount = 100; |
| |
| /** |
| * An simple packet transport implementation which can be |
| * configured to simulate uniform random packet loss and |
| * configurable random packet delay and reordering. |
| */ |
| class SimulatedPacketTransport final : public rtc::PacketTransportInternal { |
| public: |
| SimulatedPacketTransport(std::string name, |
| rtc::Thread* transport_thread, |
| uint8_t packet_loss_percents, |
| uint16_t avg_send_delay_millis) |
| : transport_name_(name), |
| transport_thread_(transport_thread), |
| packet_loss_percents_(packet_loss_percents), |
| avg_send_delay_millis_(avg_send_delay_millis), |
| random_(42) { |
| RTC_DCHECK(transport_thread_); |
| RTC_DCHECK_LE(packet_loss_percents_, 100); |
| RTC_DCHECK_RUN_ON(transport_thread_); |
| } |
| |
| ~SimulatedPacketTransport() override { |
| RTC_DCHECK_RUN_ON(transport_thread_); |
| auto destination = destination_.load(); |
| if (destination != nullptr) { |
| invoker_.Flush(destination->transport_thread_); |
| } |
| invoker_.Flush(transport_thread_); |
| destination_ = nullptr; |
| SignalWritableState(this); |
| } |
| |
| const std::string& transport_name() const override { return transport_name_; } |
| |
| bool writable() const override { return destination_ != nullptr; } |
| |
| bool receiving() const override { return true; } |
| |
| int SendPacket(const char* data, |
| size_t len, |
| const rtc::PacketOptions& options, |
| int flags = 0) { |
| RTC_DCHECK_RUN_ON(transport_thread_); |
| auto destination = destination_.load(); |
| if (destination == nullptr) { |
| return -1; |
| } |
| if (random_.Rand(100) < packet_loss_percents_) { |
| // silent packet loss |
| return 0; |
| } |
| rtc::CopyOnWriteBuffer buffer(data, len); |
| auto send_job = [this, flags, buffer = std::move(buffer)] { |
| auto destination = destination_.load(); |
| if (destination == nullptr) { |
| return; |
| } |
| destination->SignalReadPacket( |
| destination, reinterpret_cast<const char*>(buffer.data()), |
| buffer.size(), rtc::Time(), flags); |
| }; |
| // Introduce random send delay in range [0 .. 2 * avg_send_delay_millis_] |
| // millis, which will also work as random packet reordering mechanism. |
| uint16_t actual_send_delay = avg_send_delay_millis_; |
| int16_t reorder_delay = |
| avg_send_delay_millis_ * |
| std::min(1.0, std::max(-1.0, random_.Gaussian(0, 0.5))); |
| actual_send_delay += reorder_delay; |
| |
| if (actual_send_delay > 0) { |
| invoker_.AsyncInvokeDelayed<void>(RTC_FROM_HERE, |
| destination->transport_thread_, |
| std::move(send_job), actual_send_delay); |
| } else { |
| invoker_.AsyncInvoke<void>(RTC_FROM_HERE, destination->transport_thread_, |
| std::move(send_job)); |
| } |
| return 0; |
| } |
| |
| int SetOption(rtc::Socket::Option opt, int value) override { return 0; } |
| |
| bool GetOption(rtc::Socket::Option opt, int* value) override { return false; } |
| |
| int GetError() override { return 0; } |
| |
| absl::optional<rtc::NetworkRoute> network_route() const override { |
| return absl::nullopt; |
| } |
| |
| void SetDestination(SimulatedPacketTransport* destination) { |
| RTC_DCHECK_RUN_ON(transport_thread_); |
| if (destination == this) { |
| return; |
| } |
| destination_ = destination; |
| SignalWritableState(this); |
| } |
| |
| private: |
| const std::string transport_name_; |
| rtc::Thread* const transport_thread_; |
| const uint8_t packet_loss_percents_; |
| const uint16_t avg_send_delay_millis_; |
| std::atomic<SimulatedPacketTransport*> destination_ ATOMIC_VAR_INIT(nullptr); |
| rtc::AsyncInvoker invoker_; |
| webrtc::Random random_; |
| RTC_DISALLOW_COPY_AND_ASSIGN(SimulatedPacketTransport); |
| }; |
| |
| /** |
| * A helper class to send specified number of messages |
| * over SctpTransport with SCTP reliability settings |
| * provided by user. The reliability settings are specified |
| * by passing a template instance of SendDataParams. |
| * When .sid field inside SendDataParams is specified to |
| * negative value it means that actual .sid will be |
| * assigned by sender itself, .sid will be assigned from |
| * range [cricket::kMinSctpSid; cricket::kMaxSctpSid]. |
| * The wide range of sids are used to possibly trigger |
| * more execution paths inside usrsctp. |
| */ |
| class SctpDataSender final { |
| public: |
| SctpDataSender(rtc::Thread* thread, |
| cricket::SctpTransport* transport, |
| uint64_t target_messages_count, |
| cricket::SendDataParams send_params, |
| uint32_t sender_id) |
| : thread_(thread), |
| transport_(transport), |
| target_messages_count_(target_messages_count), |
| send_params_(send_params), |
| sender_id_(sender_id) { |
| RTC_DCHECK(thread_); |
| RTC_DCHECK(transport_); |
| } |
| |
| void Start() { |
| invoker_.AsyncInvoke<void>(RTC_FROM_HERE, thread_, [this] { |
| if (started_) { |
| RTC_LOG(LS_INFO) << sender_id_ << " sender is already started"; |
| return; |
| } |
| started_ = true; |
| SendNextMessage(); |
| }); |
| } |
| |
| uint64_t BytesSentCount() const { return num_bytes_sent_; } |
| |
| uint64_t MessagesSentCount() const { return num_messages_sent_; } |
| |
| absl::optional<std::string> GetLastError() { |
| absl::optional<std::string> result = absl::nullopt; |
| thread_->Invoke<void>(RTC_FROM_HERE, |
| [this, &result] { result = last_error_; }); |
| return result; |
| } |
| |
| bool WaitForCompletion(int give_up_after_ms) { |
| return sent_target_messages_count_.Wait(give_up_after_ms, kDefaultTimeout); |
| } |
| |
| private: |
| void SendNextMessage() { |
| RTC_DCHECK_RUN_ON(thread_); |
| if (!started_ || num_messages_sent_ >= target_messages_count_) { |
| sent_target_messages_count_.Set(); |
| return; |
| } |
| |
| if (num_messages_sent_ % kLogPerMessagesCount == 0) { |
| RTC_LOG(LS_INFO) << sender_id_ << " sender will try send message " |
| << (num_messages_sent_ + 1) << " out of " |
| << target_messages_count_; |
| } |
| |
| cricket::SendDataParams params(send_params_); |
| if (params.sid < 0) { |
| params.sid = cricket::kMinSctpSid + |
| (num_messages_sent_ % cricket::kMaxSctpStreams); |
| } |
| |
| cricket::SendDataResult result; |
| transport_->SendData(params, payload_, &result); |
| switch (result) { |
| case cricket::SDR_BLOCK: |
| // retry after timeout |
| invoker_.AsyncInvokeDelayed<void>( |
| RTC_FROM_HERE, thread_, |
| rtc::Bind(&SctpDataSender::SendNextMessage, this), 500); |
| break; |
| case cricket::SDR_SUCCESS: |
| // send next |
| num_bytes_sent_ += payload_.size(); |
| ++num_messages_sent_; |
| invoker_.AsyncInvoke<void>( |
| RTC_FROM_HERE, thread_, |
| rtc::Bind(&SctpDataSender::SendNextMessage, this)); |
| break; |
| case cricket::SDR_ERROR: |
| // give up |
| last_error_ = "SctpTransport::SendData error returned"; |
| sent_target_messages_count_.Set(); |
| break; |
| } |
| } |
| |
| rtc::Thread* const thread_; |
| cricket::SctpTransport* const transport_; |
| const uint64_t target_messages_count_; |
| const cricket::SendDataParams send_params_; |
| const uint32_t sender_id_; |
| rtc::CopyOnWriteBuffer payload_{std::string(1400, '.').c_str(), 1400}; |
| std::atomic<bool> started_ ATOMIC_VAR_INIT(false); |
| rtc::AsyncInvoker invoker_; |
| std::atomic<uint64_t> num_messages_sent_ ATOMIC_VAR_INIT(0); |
| rtc::Event sent_target_messages_count_{true, false}; |
| std::atomic<uint64_t> num_bytes_sent_ ATOMIC_VAR_INIT(0); |
| absl::optional<std::string> last_error_; |
| RTC_DISALLOW_COPY_AND_ASSIGN(SctpDataSender); |
| }; |
| |
| /** |
| * A helper class which counts number of received messages |
| * and bytes over SctpTransport. Also allow waiting until |
| * specified number of messages received. |
| */ |
| class SctpDataReceiver final : public sigslot::has_slots<> { |
| public: |
| explicit SctpDataReceiver(uint32_t receiver_id, |
| uint64_t target_messages_count) |
| : receiver_id_(receiver_id), |
| target_messages_count_(target_messages_count) {} |
| |
| void OnDataReceived(const cricket::ReceiveDataParams& params, |
| const rtc::CopyOnWriteBuffer& data) { |
| num_bytes_received_ += data.size(); |
| if (++num_messages_received_ == target_messages_count_) { |
| received_target_messages_count_.Set(); |
| } |
| |
| if (num_messages_received_ % kLogPerMessagesCount == 0) { |
| RTC_LOG(INFO) << receiver_id_ << " receiver got " |
| << num_messages_received_ << " messages"; |
| } |
| } |
| |
| uint64_t MessagesReceivedCount() const { return num_messages_received_; } |
| |
| uint64_t BytesReceivedCount() const { return num_bytes_received_; } |
| |
| bool WaitForMessagesReceived(int timeout_millis) { |
| return received_target_messages_count_.Wait(timeout_millis); |
| } |
| |
| private: |
| std::atomic<uint64_t> num_messages_received_ ATOMIC_VAR_INIT(0); |
| std::atomic<uint64_t> num_bytes_received_ ATOMIC_VAR_INIT(0); |
| rtc::Event received_target_messages_count_{true, false}; |
| const uint32_t receiver_id_; |
| const uint64_t target_messages_count_; |
| RTC_DISALLOW_COPY_AND_ASSIGN(SctpDataReceiver); |
| }; |
| |
| /** |
| * Simple class to manage set of threads. |
| */ |
| class ThreadPool final { |
| public: |
| explicit ThreadPool(size_t threads_count) : random_(42) { |
| RTC_DCHECK(threads_count > 0); |
| threads_.reserve(threads_count); |
| for (size_t i = 0; i < threads_count; i++) { |
| auto thread = rtc::Thread::Create(); |
| thread->SetName("Thread #" + rtc::ToString(i + 1) + " from Pool", this); |
| thread->Start(); |
| threads_.emplace_back(std::move(thread)); |
| } |
| } |
| |
| rtc::Thread* GetRandomThread() { |
| return threads_[random_.Rand(0U, threads_.size() - 1)].get(); |
| } |
| |
| private: |
| webrtc::Random random_; |
| std::vector<std::unique_ptr<rtc::Thread>> threads_; |
| RTC_DISALLOW_COPY_AND_ASSIGN(ThreadPool); |
| }; |
| |
| /** |
| * Represents single ping-pong test over SctpTransport. |
| * User can specify target number of message for bidirectional |
| * send, underlying transport packets loss and average packet delay |
| * and SCTP delivery settings. |
| */ |
| class SctpPingPong final { |
| public: |
| SctpPingPong(uint32_t id, |
| uint16_t port1, |
| uint16_t port2, |
| rtc::Thread* transport_thread1, |
| rtc::Thread* transport_thread2, |
| uint32_t messages_count, |
| uint8_t packet_loss_percents, |
| uint16_t avg_send_delay_millis, |
| cricket::SendDataParams send_params) |
| : id_(id), |
| port1_(port1), |
| port2_(port2), |
| transport_thread1_(transport_thread1), |
| transport_thread2_(transport_thread2), |
| messages_count_(messages_count), |
| packet_loss_percents_(packet_loss_percents), |
| avg_send_delay_millis_(avg_send_delay_millis), |
| send_params_(send_params) { |
| RTC_DCHECK(transport_thread1_ != nullptr); |
| RTC_DCHECK(transport_thread2_ != nullptr); |
| } |
| |
| virtual ~SctpPingPong() { |
| transport_thread1_->Invoke<void>(RTC_FROM_HERE, [this] { |
| data_sender1_.reset(); |
| sctp_transport1_->SetDtlsTransport(nullptr); |
| packet_transport1_->SetDestination(nullptr); |
| }); |
| transport_thread2_->Invoke<void>(RTC_FROM_HERE, [this] { |
| data_sender2_.reset(); |
| sctp_transport2_->SetDtlsTransport(nullptr); |
| packet_transport2_->SetDestination(nullptr); |
| }); |
| transport_thread1_->Invoke<void>(RTC_FROM_HERE, [this] { |
| sctp_transport1_.reset(); |
| data_receiver1_.reset(); |
| packet_transport1_.reset(); |
| }); |
| transport_thread2_->Invoke<void>(RTC_FROM_HERE, [this] { |
| sctp_transport2_.reset(); |
| data_receiver2_.reset(); |
| packet_transport2_.reset(); |
| }); |
| } |
| |
| bool Start() { |
| CreateTwoConnectedSctpTransportsWithAllStreams(); |
| |
| { |
| webrtc::MutexLock lock(&lock_); |
| if (!errors_list_.empty()) { |
| return false; |
| } |
| } |
| |
| data_sender1_.reset(new SctpDataSender(transport_thread1_, |
| sctp_transport1_.get(), |
| messages_count_, send_params_, id_)); |
| data_sender2_.reset(new SctpDataSender(transport_thread2_, |
| sctp_transport2_.get(), |
| messages_count_, send_params_, id_)); |
| data_sender1_->Start(); |
| data_sender2_->Start(); |
| return true; |
| } |
| |
| std::vector<std::string> GetErrorsList() const { |
| std::vector<std::string> result; |
| { |
| webrtc::MutexLock lock(&lock_); |
| result = errors_list_; |
| } |
| return result; |
| } |
| |
| void WaitForCompletion(int32_t timeout_millis) { |
| if (data_sender1_ == nullptr) { |
| ReportError("SctpPingPong id = " + rtc::ToString(id_) + |
| ", sender 1 is not created"); |
| return; |
| } |
| if (data_sender2_ == nullptr) { |
| ReportError("SctpPingPong id = " + rtc::ToString(id_) + |
| ", sender 2 is not created"); |
| return; |
| } |
| |
| if (!data_sender1_->WaitForCompletion(timeout_millis)) { |
| ReportError("SctpPingPong id = " + rtc::ToString(id_) + |
| ", sender 1 failed to complete within " + |
| rtc::ToString(timeout_millis) + " millis"); |
| return; |
| } |
| |
| auto sender1_error = data_sender1_->GetLastError(); |
| if (sender1_error.has_value()) { |
| ReportError("SctpPingPong id = " + rtc::ToString(id_) + |
| ", sender 1 error: " + sender1_error.value()); |
| return; |
| } |
| |
| if (!data_sender2_->WaitForCompletion(timeout_millis)) { |
| ReportError("SctpPingPong id = " + rtc::ToString(id_) + |
| ", sender 2 failed to complete within " + |
| rtc::ToString(timeout_millis) + " millis"); |
| return; |
| } |
| |
| auto sender2_error = data_sender2_->GetLastError(); |
| if (sender2_error.has_value()) { |
| ReportError("SctpPingPong id = " + rtc::ToString(id_) + |
| ", sender 2 error: " + sender1_error.value()); |
| return; |
| } |
| |
| if ((data_sender1_->MessagesSentCount() != messages_count_)) { |
| ReportError("SctpPingPong id = " + rtc::ToString(id_) + |
| ", sender 1 sent only " + |
| rtc::ToString(data_sender1_->MessagesSentCount()) + |
| " out of " + rtc::ToString(messages_count_)); |
| return; |
| } |
| |
| if ((data_sender2_->MessagesSentCount() != messages_count_)) { |
| ReportError("SctpPingPong id = " + rtc::ToString(id_) + |
| ", sender 2 sent only " + |
| rtc::ToString(data_sender2_->MessagesSentCount()) + |
| " out of " + rtc::ToString(messages_count_)); |
| return; |
| } |
| |
| if (!data_receiver1_->WaitForMessagesReceived(timeout_millis)) { |
| ReportError("SctpPingPong id = " + rtc::ToString(id_) + |
| ", receiver 1 did not complete within " + |
| rtc::ToString(messages_count_)); |
| return; |
| } |
| |
| if (!data_receiver2_->WaitForMessagesReceived(timeout_millis)) { |
| ReportError("SctpPingPong id = " + rtc::ToString(id_) + |
| ", receiver 2 did not complete within " + |
| rtc::ToString(messages_count_)); |
| return; |
| } |
| |
| if (data_receiver1_->BytesReceivedCount() != |
| data_sender2_->BytesSentCount()) { |
| ReportError( |
| "SctpPingPong id = " + rtc::ToString(id_) + ", receiver 1 received " + |
| rtc::ToString(data_receiver1_->BytesReceivedCount()) + |
| " bytes, but sender 2 send " + |
| rtc::ToString(rtc::ToString(data_sender2_->BytesSentCount()))); |
| return; |
| } |
| |
| if (data_receiver2_->BytesReceivedCount() != |
| data_sender1_->BytesSentCount()) { |
| ReportError( |
| "SctpPingPong id = " + rtc::ToString(id_) + ", receiver 2 received " + |
| rtc::ToString(data_receiver2_->BytesReceivedCount()) + |
| " bytes, but sender 1 send " + |
| rtc::ToString(rtc::ToString(data_sender1_->BytesSentCount()))); |
| return; |
| } |
| |
| RTC_LOG(LS_INFO) << "SctpPingPong id = " << id_ << " is done"; |
| } |
| |
| private: |
| void CreateTwoConnectedSctpTransportsWithAllStreams() { |
| transport_thread1_->Invoke<void>(RTC_FROM_HERE, [this] { |
| packet_transport1_.reset(new SimulatedPacketTransport( |
| "SctpPingPong id = " + rtc::ToString(id_) + ", packet transport 1", |
| transport_thread1_, packet_loss_percents_, avg_send_delay_millis_)); |
| data_receiver1_.reset(new SctpDataReceiver(id_, messages_count_)); |
| sctp_transport1_.reset(new cricket::SctpTransport( |
| transport_thread1_, packet_transport1_.get())); |
| sctp_transport1_->set_debug_name_for_testing("sctp transport 1"); |
| |
| sctp_transport1_->SignalDataReceived.connect( |
| data_receiver1_.get(), &SctpDataReceiver::OnDataReceived); |
| |
| for (uint32_t i = cricket::kMinSctpSid; i <= cricket::kMaxSctpSid; i++) { |
| if (!sctp_transport1_->OpenStream(i)) { |
| ReportError("SctpPingPong id = " + rtc::ToString(id_) + |
| ", sctp transport 1 stream " + rtc::ToString(i) + |
| " failed to open"); |
| break; |
| } |
| } |
| }); |
| |
| transport_thread2_->Invoke<void>(RTC_FROM_HERE, [this] { |
| packet_transport2_.reset(new SimulatedPacketTransport( |
| "SctpPingPong id = " + rtc::ToString(id_) + "packet transport 2", |
| transport_thread2_, packet_loss_percents_, avg_send_delay_millis_)); |
| data_receiver2_.reset(new SctpDataReceiver(id_, messages_count_)); |
| sctp_transport2_.reset(new cricket::SctpTransport( |
| transport_thread2_, packet_transport2_.get())); |
| sctp_transport2_->set_debug_name_for_testing("sctp transport 2"); |
| sctp_transport2_->SignalDataReceived.connect( |
| data_receiver2_.get(), &SctpDataReceiver::OnDataReceived); |
| |
| for (uint32_t i = cricket::kMinSctpSid; i <= cricket::kMaxSctpSid; i++) { |
| if (!sctp_transport2_->OpenStream(i)) { |
| ReportError("SctpPingPong id = " + rtc::ToString(id_) + |
| ", sctp transport 2 stream " + rtc::ToString(i) + |
| " failed to open"); |
| break; |
| } |
| } |
| }); |
| |
| transport_thread1_->Invoke<void>(RTC_FROM_HERE, [this] { |
| packet_transport1_->SetDestination(packet_transport2_.get()); |
| }); |
| transport_thread2_->Invoke<void>(RTC_FROM_HERE, [this] { |
| packet_transport2_->SetDestination(packet_transport1_.get()); |
| }); |
| |
| transport_thread1_->Invoke<void>(RTC_FROM_HERE, [this] { |
| if (!sctp_transport1_->Start(port1_, port2_, |
| cricket::kSctpSendBufferSize)) { |
| ReportError("SctpPingPong id = " + rtc::ToString(id_) + |
| ", failed to start sctp transport 1"); |
| } |
| }); |
| |
| transport_thread2_->Invoke<void>(RTC_FROM_HERE, [this] { |
| if (!sctp_transport2_->Start(port2_, port1_, |
| cricket::kSctpSendBufferSize)) { |
| ReportError("SctpPingPong id = " + rtc::ToString(id_) + |
| ", failed to start sctp transport 2"); |
| } |
| }); |
| } |
| |
| void ReportError(std::string error) { |
| webrtc::MutexLock lock(&lock_); |
| errors_list_.push_back(std::move(error)); |
| } |
| |
| std::unique_ptr<SimulatedPacketTransport> packet_transport1_; |
| std::unique_ptr<SimulatedPacketTransport> packet_transport2_; |
| std::unique_ptr<SctpDataReceiver> data_receiver1_; |
| std::unique_ptr<SctpDataReceiver> data_receiver2_; |
| std::unique_ptr<cricket::SctpTransport> sctp_transport1_; |
| std::unique_ptr<cricket::SctpTransport> sctp_transport2_; |
| std::unique_ptr<SctpDataSender> data_sender1_; |
| std::unique_ptr<SctpDataSender> data_sender2_; |
| mutable webrtc::Mutex lock_; |
| std::vector<std::string> errors_list_ RTC_GUARDED_BY(lock_); |
| |
| const uint32_t id_; |
| const uint16_t port1_; |
| const uint16_t port2_; |
| rtc::Thread* const transport_thread1_; |
| rtc::Thread* const transport_thread2_; |
| const uint32_t messages_count_; |
| const uint8_t packet_loss_percents_; |
| const uint16_t avg_send_delay_millis_; |
| const cricket::SendDataParams send_params_; |
| RTC_DISALLOW_COPY_AND_ASSIGN(SctpPingPong); |
| }; |
| |
| /** |
| * Helper function to calculate max number of milliseconds |
| * allowed for test to run based on test configuration. |
| */ |
| constexpr int32_t GetExecutionTimeLimitInMillis(uint32_t total_messages, |
| uint8_t packet_loss_percents) { |
| return std::min<int64_t>( |
| std::numeric_limits<int32_t>::max(), |
| std::max<int64_t>( |
| 1LL * total_messages * 100 * |
| std::max(1, packet_loss_percents * packet_loss_percents), |
| kDefaultTimeout)); |
| } |
| |
| } // namespace |
| |
| namespace cricket { |
| |
| /** |
| * The set of tests intended to check usrsctp reliability on |
| * stress conditions: multiple sockets, concurrent access, |
| * lossy network link. It was observed in the past that |
| * usrsctp might misbehave in concurrent environment |
| * under load on lossy networks: deadlocks and memory corruption |
| * issues might happen in non-basic usage scenarios. |
| * It's recommended to run this test whenever usrsctp version |
| * used is updated to verify it properly works in stress |
| * conditions under higher than usual load. |
| * It is also recommended to enable ASAN when these tests |
| * are executed, so whenever memory bug is happen inside usrsctp, |
| * it will be easier to understand what went wrong with ASAN |
| * provided diagnostics information. |
| * The tests cases currently disabled by default due to |
| * long execution time and due to unresolved issue inside |
| * `usrsctp` library detected by try-bots with ThreadSanitizer. |
| */ |
| class UsrSctpReliabilityTest : public ::testing::Test {}; |
| |
| /** |
| * A simple test which send multiple messages over reliable |
| * connection, usefull to verify test infrastructure works. |
| * Execution time is less than 1 second. |
| */ |
| TEST_F(UsrSctpReliabilityTest, |
| DISABLED_AllMessagesAreDeliveredOverReliableConnection) { |
| auto thread1 = rtc::Thread::Create(); |
| auto thread2 = rtc::Thread::Create(); |
| thread1->Start(); |
| thread2->Start(); |
| constexpr uint8_t packet_loss_percents = 0; |
| constexpr uint16_t avg_send_delay_millis = 10; |
| constexpr uint32_t messages_count = 100; |
| constexpr int32_t wait_timeout = |
| GetExecutionTimeLimitInMillis(messages_count, packet_loss_percents); |
| static_assert(wait_timeout > 0, |
| "Timeout computation must produce positive value"); |
| |
| cricket::SendDataParams send_params; |
| send_params.sid = -1; |
| send_params.ordered = true; |
| send_params.reliable = true; |
| send_params.max_rtx_count = 0; |
| send_params.max_rtx_ms = 0; |
| |
| SctpPingPong test(1, kTransport1Port, kTransport2Port, thread1.get(), |
| thread2.get(), messages_count, packet_loss_percents, |
| avg_send_delay_millis, send_params); |
| EXPECT_TRUE(test.Start()) << rtc::join(test.GetErrorsList(), ';'); |
| test.WaitForCompletion(wait_timeout); |
| auto errors_list = test.GetErrorsList(); |
| EXPECT_TRUE(errors_list.empty()) << rtc::join(errors_list, ';'); |
| } |
| |
| /** |
| * A test to verify that multiple messages can be reliably delivered |
| * over lossy network when usrsctp configured to guarantee reliably |
| * and in order delivery. |
| * The test case is disabled by default because it takes |
| * long time to run. |
| * Execution time is about 2.5 minutes. |
| */ |
| TEST_F(UsrSctpReliabilityTest, |
| DISABLED_AllMessagesAreDeliveredOverLossyConnectionReliableAndInOrder) { |
| auto thread1 = rtc::Thread::Create(); |
| auto thread2 = rtc::Thread::Create(); |
| thread1->Start(); |
| thread2->Start(); |
| constexpr uint8_t packet_loss_percents = 5; |
| constexpr uint16_t avg_send_delay_millis = 16; |
| constexpr uint32_t messages_count = 10000; |
| constexpr int32_t wait_timeout = |
| GetExecutionTimeLimitInMillis(messages_count, packet_loss_percents); |
| static_assert(wait_timeout > 0, |
| "Timeout computation must produce positive value"); |
| |
| cricket::SendDataParams send_params; |
| send_params.sid = -1; |
| send_params.ordered = true; |
| send_params.reliable = true; |
| send_params.max_rtx_count = 0; |
| send_params.max_rtx_ms = 0; |
| |
| SctpPingPong test(1, kTransport1Port, kTransport2Port, thread1.get(), |
| thread2.get(), messages_count, packet_loss_percents, |
| avg_send_delay_millis, send_params); |
| |
| EXPECT_TRUE(test.Start()) << rtc::join(test.GetErrorsList(), ';'); |
| test.WaitForCompletion(wait_timeout); |
| auto errors_list = test.GetErrorsList(); |
| EXPECT_TRUE(errors_list.empty()) << rtc::join(errors_list, ';'); |
| } |
| |
| /** |
| * A test to verify that multiple messages can be reliably delivered |
| * over lossy network when usrsctp configured to retransmit lost |
| * packets. |
| * The test case is disabled by default because it takes |
| * long time to run. |
| * Execution time is about 2.5 minutes. |
| */ |
| TEST_F(UsrSctpReliabilityTest, |
| DISABLED_AllMessagesAreDeliveredOverLossyConnectionWithRetries) { |
| auto thread1 = rtc::Thread::Create(); |
| auto thread2 = rtc::Thread::Create(); |
| thread1->Start(); |
| thread2->Start(); |
| constexpr uint8_t packet_loss_percents = 5; |
| constexpr uint16_t avg_send_delay_millis = 16; |
| constexpr uint32_t messages_count = 10000; |
| constexpr int32_t wait_timeout = |
| GetExecutionTimeLimitInMillis(messages_count, packet_loss_percents); |
| static_assert(wait_timeout > 0, |
| "Timeout computation must produce positive value"); |
| |
| cricket::SendDataParams send_params; |
| send_params.sid = -1; |
| send_params.ordered = false; |
| send_params.reliable = false; |
| send_params.max_rtx_count = INT_MAX; |
| send_params.max_rtx_ms = INT_MAX; |
| |
| SctpPingPong test(1, kTransport1Port, kTransport2Port, thread1.get(), |
| thread2.get(), messages_count, packet_loss_percents, |
| avg_send_delay_millis, send_params); |
| |
| EXPECT_TRUE(test.Start()) << rtc::join(test.GetErrorsList(), ';'); |
| test.WaitForCompletion(wait_timeout); |
| auto errors_list = test.GetErrorsList(); |
| EXPECT_TRUE(errors_list.empty()) << rtc::join(errors_list, ';'); |
| } |
| |
| /** |
| * This is kind of reliability stress-test of usrsctp to verify |
| * that all messages are delivered when multiple usrsctp |
| * sockets used concurrently and underlying transport is lossy. |
| * |
| * It was observed in the past that in stress condtions usrsctp |
| * might encounter deadlock and memory corruption bugs: |
| * https://github.com/sctplab/usrsctp/issues/325 |
| * |
| * It is recoomended to run this test whenever usrsctp version |
| * used by WebRTC is updated. |
| * |
| * The test case is disabled by default because it takes |
| * long time to run. |
| * Execution time of this test is about 1-2 hours. |
| */ |
| TEST_F(UsrSctpReliabilityTest, |
| DISABLED_AllMessagesAreDeliveredOverLossyConnectionConcurrentTests) { |
| ThreadPool pool(16); |
| |
| cricket::SendDataParams send_params; |
| send_params.sid = -1; |
| send_params.ordered = true; |
| send_params.reliable = true; |
| send_params.max_rtx_count = 0; |
| send_params.max_rtx_ms = 0; |
| constexpr uint32_t base_sctp_port = 5000; |
| |
| // The constants value below were experimentally chosen |
| // to have reasonable execution time and to reproduce |
| // particular deadlock issue inside usrsctp: |
| // https://github.com/sctplab/usrsctp/issues/325 |
| // The constants values may be adjusted next time |
| // some other issue inside usrsctp need to be debugged. |
| constexpr uint32_t messages_count = 200; |
| constexpr uint8_t packet_loss_percents = 5; |
| constexpr uint16_t avg_send_delay_millis = 0; |
| constexpr uint32_t parallel_ping_pongs = 16 * 1024; |
| constexpr uint32_t total_ping_pong_tests = 16 * parallel_ping_pongs; |
| |
| constexpr int32_t wait_timeout = GetExecutionTimeLimitInMillis( |
| total_ping_pong_tests * messages_count, packet_loss_percents); |
| static_assert(wait_timeout > 0, |
| "Timeout computation must produce positive value"); |
| |
| std::queue<std::unique_ptr<SctpPingPong>> tests; |
| |
| for (uint32_t i = 0; i < total_ping_pong_tests; i++) { |
| uint32_t port1 = |
| base_sctp_port + (2 * i) % (UINT16_MAX - base_sctp_port - 1); |
| |
| auto test = std::make_unique<SctpPingPong>( |
| i, port1, port1 + 1, pool.GetRandomThread(), pool.GetRandomThread(), |
| messages_count, packet_loss_percents, avg_send_delay_millis, |
| send_params); |
| |
| EXPECT_TRUE(test->Start()) << rtc::join(test->GetErrorsList(), ';'); |
| tests.emplace(std::move(test)); |
| |
| while (tests.size() >= parallel_ping_pongs) { |
| auto& oldest_test = tests.front(); |
| oldest_test->WaitForCompletion(wait_timeout); |
| |
| auto errors_list = oldest_test->GetErrorsList(); |
| EXPECT_TRUE(errors_list.empty()) << rtc::join(errors_list, ';'); |
| tests.pop(); |
| } |
| } |
| |
| while (!tests.empty()) { |
| auto& oldest_test = tests.front(); |
| oldest_test->WaitForCompletion(wait_timeout); |
| |
| auto errors_list = oldest_test->GetErrorsList(); |
| EXPECT_TRUE(errors_list.empty()) << rtc::join(errors_list, ';'); |
| tests.pop(); |
| } |
| } |
| |
| } // namespace cricket |
