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webrtc / src / 26fe811623627e1089a8df2c86a89dda2cd9d338 / . / pc / peer_connection_integrationtest.cc
blob: ab617c685bc4aa06cf6359b39cd21f00ef9ae1fb [file] [log] [blame]
/*
* Copyright 2012 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.
*/
// Disable for TSan v2, see
// https://code.google.com/p/webrtc/issues/detail?id=1205 for details.
#if !defined(THREAD_SANITIZER)
#include <stdio.h>
#include <functional>
#include <list>
#include <map>
#include <memory>
#include <utility>
#include <vector>
#include "absl/algorithm/container.h"
#include "api/media_stream_interface.h"
#include "api/peer_connection_interface.h"
#include "api/peer_connection_proxy.h"
#include "api/rtc_event_log/rtc_event_log_factory.h"
#include "api/rtp_receiver_interface.h"
#include "api/task_queue/default_task_queue_factory.h"
#include "api/test/loopback_media_transport.h"
#include "api/uma_metrics.h"
#include "api/video_codecs/sdp_video_format.h"
#include "call/call.h"
#include "logging/rtc_event_log/fake_rtc_event_log_factory.h"
#include "media/engine/fake_webrtc_video_engine.h"
#include "media/engine/webrtc_media_engine.h"
#include "media/engine/webrtc_media_engine_defaults.h"
#include "p2p/base/fake_ice_transport.h"
#include "p2p/base/mock_async_resolver.h"
#include "p2p/base/p2p_constants.h"
#include "p2p/base/port_interface.h"
#include "p2p/base/test_stun_server.h"
#include "p2p/base/test_turn_customizer.h"
#include "p2p/base/test_turn_server.h"
#include "p2p/client/basic_port_allocator.h"
#include "pc/dtmf_sender.h"
#include "pc/local_audio_source.h"
#include "pc/media_session.h"
#include "pc/peer_connection.h"
#include "pc/peer_connection_factory.h"
#include "pc/rtp_media_utils.h"
#include "pc/session_description.h"
#include "pc/test/fake_audio_capture_module.h"
#include "pc/test/fake_periodic_video_track_source.h"
#include "pc/test/fake_rtc_certificate_generator.h"
#include "pc/test/fake_video_track_renderer.h"
#include "pc/test/mock_peer_connection_observers.h"
#include "rtc_base/fake_clock.h"
#include "rtc_base/fake_mdns_responder.h"
#include "rtc_base/fake_network.h"
#include "rtc_base/firewall_socket_server.h"
#include "rtc_base/gunit.h"
#include "rtc_base/numerics/safe_conversions.h"
#include "rtc_base/test_certificate_verifier.h"
#include "rtc_base/time_utils.h"
#include "rtc_base/virtual_socket_server.h"
#include "system_wrappers/include/metrics.h"
#include "test/field_trial.h"
#include "test/gmock.h"
namespace webrtc {
namespace {
using ::cricket::ContentInfo;
using ::cricket::StreamParams;
using ::rtc::SocketAddress;
using ::testing::_;
using ::testing::Combine;
using ::testing::Contains;
using ::testing::DoAll;
using ::testing::ElementsAre;
using ::testing::NiceMock;
using ::testing::Return;
using ::testing::SetArgPointee;
using ::testing::UnorderedElementsAreArray;
using ::testing::Values;
using RTCConfiguration = PeerConnectionInterface::RTCConfiguration;
static const int kDefaultTimeout = 10000;
static const int kMaxWaitForStatsMs = 3000;
static const int kMaxWaitForActivationMs = 5000;
static const int kMaxWaitForFramesMs = 10000;
// Default number of audio/video frames to wait for before considering a test
// successful.
static const int kDefaultExpectedAudioFrameCount = 3;
static const int kDefaultExpectedVideoFrameCount = 3;
static const char kDataChannelLabel[] = "data_channel";
// SRTP cipher name negotiated by the tests. This must be updated if the
// default changes.
static const int kDefaultSrtpCryptoSuite = rtc::SRTP_AES128_CM_SHA1_80;
static const int kDefaultSrtpCryptoSuiteGcm = rtc::SRTP_AEAD_AES_256_GCM;
static const SocketAddress kDefaultLocalAddress("192.168.1.1", 0);
// Helper function for constructing offer/answer options to initiate an ICE
// restart.
PeerConnectionInterface::RTCOfferAnswerOptions IceRestartOfferAnswerOptions() {
PeerConnectionInterface::RTCOfferAnswerOptions options;
options.ice_restart = true;
return options;
}
// Remove all stream information (SSRCs, track IDs, etc.) and "msid-semantic"
// attribute from received SDP, simulating a legacy endpoint.
void RemoveSsrcsAndMsids(cricket::SessionDescription* desc) {
for (ContentInfo& content : desc->contents()) {
content.media_description()->mutable_streams().clear();
}
desc->set_msid_supported(false);
desc->set_msid_signaling(0);
}
// Removes all stream information besides the stream ids, simulating an
// endpoint that only signals a=msid lines to convey stream_ids.
void RemoveSsrcsAndKeepMsids(cricket::SessionDescription* desc) {
for (ContentInfo& content : desc->contents()) {
std::string track_id;
std::vector<std::string> stream_ids;
if (!content.media_description()->streams().empty()) {
const StreamParams& first_stream =
content.media_description()->streams()[0];
track_id = first_stream.id;
stream_ids = first_stream.stream_ids();
}
content.media_description()->mutable_streams().clear();
StreamParams new_stream;
new_stream.id = track_id;
new_stream.set_stream_ids(stream_ids);
content.media_description()->AddStream(new_stream);
}
}
int FindFirstMediaStatsIndexByKind(
const std::string& kind,
const std::vector<const webrtc::RTCMediaStreamTrackStats*>&
media_stats_vec) {
for (size_t i = 0; i < media_stats_vec.size(); i++) {
if (media_stats_vec[i]->kind.ValueToString() == kind) {
return i;
}
}
return -1;
}
class SignalingMessageReceiver {
public:
virtual void ReceiveSdpMessage(SdpType type, const std::string& msg) = 0;
virtual void ReceiveIceMessage(const std::string& sdp_mid,
int sdp_mline_index,
const std::string& msg) = 0;
protected:
SignalingMessageReceiver() {}
virtual ~SignalingMessageReceiver() {}
};
class MockRtpReceiverObserver : public webrtc::RtpReceiverObserverInterface {
public:
explicit MockRtpReceiverObserver(cricket::MediaType media_type)
: expected_media_type_(media_type) {}
void OnFirstPacketReceived(cricket::MediaType media_type) override {
ASSERT_EQ(expected_media_type_, media_type);
first_packet_received_ = true;
}
bool first_packet_received() const { return first_packet_received_; }
virtual ~MockRtpReceiverObserver() {}
private:
bool first_packet_received_ = false;
cricket::MediaType expected_media_type_;
};
// Helper class that wraps a peer connection, observes it, and can accept
// signaling messages from another wrapper.
//
// Uses a fake network, fake A/V capture, and optionally fake
// encoders/decoders, though they aren't used by default since they don't
// advertise support of any codecs.
// TODO(steveanton): See how this could become a subclass of
// PeerConnectionWrapper defined in peerconnectionwrapper.h.
class PeerConnectionWrapper : public webrtc::PeerConnectionObserver,
public SignalingMessageReceiver {
public:
// Different factory methods for convenience.
// TODO(deadbeef): Could use the pattern of:
//
// PeerConnectionWrapper =
// WrapperBuilder.WithConfig(...).WithOptions(...).build();
//
// To reduce some code duplication.
static PeerConnectionWrapper* CreateWithDtlsIdentityStore(
const std::string& debug_name,
std::unique_ptr<rtc::RTCCertificateGeneratorInterface> cert_generator,
rtc::Thread* network_thread,
rtc::Thread* worker_thread) {
PeerConnectionWrapper* client(new PeerConnectionWrapper(debug_name));
webrtc::PeerConnectionDependencies dependencies(nullptr);
dependencies.cert_generator = std::move(cert_generator);
if (!client->Init(nullptr, nullptr, std::move(dependencies), network_thread,
worker_thread, nullptr,
/*media_transport_factory=*/nullptr)) {
delete client;
return nullptr;
}
return client;
}
webrtc::PeerConnectionFactoryInterface* pc_factory() const {
return peer_connection_factory_.get();
}
webrtc::PeerConnectionInterface* pc() const { return peer_connection_.get(); }
// If a signaling message receiver is set (via ConnectFakeSignaling), this
// will set the whole offer/answer exchange in motion. Just need to wait for
// the signaling state to reach "stable".
void CreateAndSetAndSignalOffer() {
auto offer = CreateOfferAndWait();
ASSERT_NE(nullptr, offer);
EXPECT_TRUE(SetLocalDescriptionAndSendSdpMessage(std::move(offer)));
}
// Sets the options to be used when CreateAndSetAndSignalOffer is called, or
// when a remote offer is received (via fake signaling) and an answer is
// generated. By default, uses default options.
void SetOfferAnswerOptions(
const PeerConnectionInterface::RTCOfferAnswerOptions& options) {
offer_answer_options_ = options;
}
// Set a callback to be invoked when SDP is received via the fake signaling
// channel, which provides an opportunity to munge (modify) the SDP. This is
// used to test SDP being applied that a PeerConnection would normally not
// generate, but a non-JSEP endpoint might.
void SetReceivedSdpMunger(
std::function<void(cricket::SessionDescription*)> munger) {
received_sdp_munger_ = std::move(munger);
}
// Similar to the above, but this is run on SDP immediately after it's
// generated.
void SetGeneratedSdpMunger(
std::function<void(cricket::SessionDescription*)> munger) {
generated_sdp_munger_ = std::move(munger);
}
// Set a callback to be invoked when a remote offer is received via the fake
// signaling channel. This provides an opportunity to change the
// PeerConnection state before an answer is created and sent to the caller.
void SetRemoteOfferHandler(std::function<void()> handler) {
remote_offer_handler_ = std::move(handler);
}
void SetRemoteAsyncResolver(rtc::MockAsyncResolver* resolver) {
remote_async_resolver_ = resolver;
}
// Every ICE connection state in order that has been seen by the observer.
std::vector<PeerConnectionInterface::IceConnectionState>
ice_connection_state_history() const {
return ice_connection_state_history_;
}
void clear_ice_connection_state_history() {
ice_connection_state_history_.clear();
}
// Every standardized ICE connection state in order that has been seen by the
// observer.
std::vector<PeerConnectionInterface::IceConnectionState>
standardized_ice_connection_state_history() const {
return standardized_ice_connection_state_history_;
}
// Every PeerConnection state in order that has been seen by the observer.
std::vector<PeerConnectionInterface::PeerConnectionState>
peer_connection_state_history() const {
return peer_connection_state_history_;
}
// Every ICE gathering state in order that has been seen by the observer.
std::vector<PeerConnectionInterface::IceGatheringState>
ice_gathering_state_history() const {
return ice_gathering_state_history_;
}
std::vector<cricket::CandidatePairChangeEvent>
ice_candidate_pair_change_history() const {
return ice_candidate_pair_change_history_;
}
// Every PeerConnection signaling state in order that has been seen by the
// observer.
std::vector<PeerConnectionInterface::SignalingState>
peer_connection_signaling_state_history() const {
return peer_connection_signaling_state_history_;
}
void AddAudioVideoTracks() {
AddAudioTrack();
AddVideoTrack();
}
rtc::scoped_refptr<RtpSenderInterface> AddAudioTrack() {
return AddTrack(CreateLocalAudioTrack());
}
rtc::scoped_refptr<RtpSenderInterface> AddVideoTrack() {
return AddTrack(CreateLocalVideoTrack());
}
rtc::scoped_refptr<webrtc::AudioTrackInterface> CreateLocalAudioTrack() {
cricket::AudioOptions options;
// Disable highpass filter so that we can get all the test audio frames.
options.highpass_filter = false;
rtc::scoped_refptr<webrtc::AudioSourceInterface> source =
peer_connection_factory_->CreateAudioSource(options);
// TODO(perkj): Test audio source when it is implemented. Currently audio
// always use the default input.
return peer_connection_factory_->CreateAudioTrack(rtc::CreateRandomUuid(),
source);
}
rtc::scoped_refptr<webrtc::VideoTrackInterface> CreateLocalVideoTrack() {
webrtc::FakePeriodicVideoSource::Config config;
config.timestamp_offset_ms = rtc::TimeMillis();
return CreateLocalVideoTrackInternal(config);
}
rtc::scoped_refptr<webrtc::VideoTrackInterface>
CreateLocalVideoTrackWithConfig(
webrtc::FakePeriodicVideoSource::Config config) {
return CreateLocalVideoTrackInternal(config);
}
rtc::scoped_refptr<webrtc::VideoTrackInterface>
CreateLocalVideoTrackWithRotation(webrtc::VideoRotation rotation) {
webrtc::FakePeriodicVideoSource::Config config;
config.rotation = rotation;
config.timestamp_offset_ms = rtc::TimeMillis();
return CreateLocalVideoTrackInternal(config);
}
rtc::scoped_refptr<RtpSenderInterface> AddTrack(
rtc::scoped_refptr<MediaStreamTrackInterface> track,
const std::vector<std::string>& stream_ids = {}) {
auto result = pc()->AddTrack(track, stream_ids);
EXPECT_EQ(RTCErrorType::NONE, result.error().type());
return result.MoveValue();
}
std::vector<rtc::scoped_refptr<RtpReceiverInterface>> GetReceiversOfType(
cricket::MediaType media_type) {
std::vector<rtc::scoped_refptr<RtpReceiverInterface>> receivers;
for (const auto& receiver : pc()->GetReceivers()) {
if (receiver->media_type() == media_type) {
receivers.push_back(receiver);
}
}
return receivers;
}
rtc::scoped_refptr<RtpTransceiverInterface> GetFirstTransceiverOfType(
cricket::MediaType media_type) {
for (auto transceiver : pc()->GetTransceivers()) {
if (transceiver->receiver()->media_type() == media_type) {
return transceiver;
}
}
return nullptr;
}
bool SignalingStateStable() {
return pc()->signaling_state() == webrtc::PeerConnectionInterface::kStable;
}
void CreateDataChannel() { CreateDataChannel(nullptr); }
void CreateDataChannel(const webrtc::DataChannelInit* init) {
CreateDataChannel(kDataChannelLabel, init);
}
void CreateDataChannel(const std::string& label,
const webrtc::DataChannelInit* init) {
data_channel_ = pc()->CreateDataChannel(label, init);
ASSERT_TRUE(data_channel_.get() != nullptr);
data_observer_.reset(new MockDataChannelObserver(data_channel_));
}
DataChannelInterface* data_channel() { return data_channel_; }
const MockDataChannelObserver* data_observer() const {
return data_observer_.get();
}
int audio_frames_received() const {
return fake_audio_capture_module_->frames_received();
}
// Takes minimum of video frames received for each track.
//
// Can be used like:
// EXPECT_GE(expected_frames, min_video_frames_received_per_track());
//
// To ensure that all video tracks received at least a certain number of
// frames.
int min_video_frames_received_per_track() const {
int min_frames = INT_MAX;
if (fake_video_renderers_.empty()) {
return 0;
}
for (const auto& pair : fake_video_renderers_) {
min_frames = std::min(min_frames, pair.second->num_rendered_frames());
}
return min_frames;
}
// Returns a MockStatsObserver in a state after stats gathering finished,
// which can be used to access the gathered stats.
rtc::scoped_refptr<MockStatsObserver> OldGetStatsForTrack(
webrtc::MediaStreamTrackInterface* track) {
rtc::scoped_refptr<MockStatsObserver> observer(
new rtc::RefCountedObject<MockStatsObserver>());
EXPECT_TRUE(peer_connection_->GetStats(
observer, nullptr, PeerConnectionInterface::kStatsOutputLevelStandard));
EXPECT_TRUE_WAIT(observer->called(), kDefaultTimeout);
return observer;
}
// Version that doesn't take a track "filter", and gathers all stats.
rtc::scoped_refptr<MockStatsObserver> OldGetStats() {
return OldGetStatsForTrack(nullptr);
}
// Synchronously gets stats and returns them. If it times out, fails the test
// and returns null.
rtc::scoped_refptr<const webrtc::RTCStatsReport> NewGetStats() {
rtc::scoped_refptr<webrtc::MockRTCStatsCollectorCallback> callback(
new rtc::RefCountedObject<webrtc::MockRTCStatsCollectorCallback>());
peer_connection_->GetStats(callback);
EXPECT_TRUE_WAIT(callback->called(), kDefaultTimeout);
return callback->report();
}
int rendered_width() {
EXPECT_FALSE(fake_video_renderers_.empty());
return fake_video_renderers_.empty()
? 0
: fake_video_renderers_.begin()->second->width();
}
int rendered_height() {
EXPECT_FALSE(fake_video_renderers_.empty());
return fake_video_renderers_.empty()
? 0
: fake_video_renderers_.begin()->second->height();
}
double rendered_aspect_ratio() {
if (rendered_height() == 0) {
return 0.0;
}
return static_cast<double>(rendered_width()) / rendered_height();
}
webrtc::VideoRotation rendered_rotation() {
EXPECT_FALSE(fake_video_renderers_.empty());
return fake_video_renderers_.empty()
? webrtc::kVideoRotation_0
: fake_video_renderers_.begin()->second->rotation();
}
int local_rendered_width() {
return local_video_renderer_ ? local_video_renderer_->width() : 0;
}
int local_rendered_height() {
return local_video_renderer_ ? local_video_renderer_->height() : 0;
}
double local_rendered_aspect_ratio() {
if (local_rendered_height() == 0) {
return 0.0;
}
return static_cast<double>(local_rendered_width()) /
local_rendered_height();
}
size_t number_of_remote_streams() {
if (!pc()) {
return 0;
}
return pc()->remote_streams()->count();
}
StreamCollectionInterface* remote_streams() const {
if (!pc()) {
ADD_FAILURE();
return nullptr;
}
return pc()->remote_streams();
}
StreamCollectionInterface* local_streams() {
if (!pc()) {
ADD_FAILURE();
return nullptr;
}
return pc()->local_streams();
}
webrtc::PeerConnectionInterface::SignalingState signaling_state() {
return pc()->signaling_state();
}
webrtc::PeerConnectionInterface::IceConnectionState ice_connection_state() {
return pc()->ice_connection_state();
}
webrtc::PeerConnectionInterface::IceConnectionState
standardized_ice_connection_state() {
return pc()->standardized_ice_connection_state();
}
webrtc::PeerConnectionInterface::IceGatheringState ice_gathering_state() {
return pc()->ice_gathering_state();
}
// Returns a MockRtpReceiverObserver for each RtpReceiver returned by
// GetReceivers. They're updated automatically when a remote offer/answer
// from the fake signaling channel is applied, or when
// ResetRtpReceiverObservers below is called.
const std::vector<std::unique_ptr<MockRtpReceiverObserver>>&
rtp_receiver_observers() {
return rtp_receiver_observers_;
}
void ResetRtpReceiverObservers() {
rtp_receiver_observers_.clear();
for (const rtc::scoped_refptr<RtpReceiverInterface>& receiver :
pc()->GetReceivers()) {
std::unique_ptr<MockRtpReceiverObserver> observer(
new MockRtpReceiverObserver(receiver->media_type()));
receiver->SetObserver(observer.get());
rtp_receiver_observers_.push_back(std::move(observer));
}
}
rtc::FakeNetworkManager* network_manager() const {
return fake_network_manager_.get();
}
cricket::PortAllocator* port_allocator() const { return port_allocator_; }
webrtc::FakeRtcEventLogFactory* event_log_factory() const {
return event_log_factory_;
}
const cricket::Candidate& last_candidate_gathered() const {
return last_candidate_gathered_;
}
const cricket::IceCandidateErrorEvent& error_event() const {
return error_event_;
}
// Sets the mDNS responder for the owned fake network manager and keeps a
// reference to the responder.
void SetMdnsResponder(
std::unique_ptr<webrtc::FakeMdnsResponder> mdns_responder) {
RTC_DCHECK(mdns_responder != nullptr);
mdns_responder_ = mdns_responder.get();
network_manager()->set_mdns_responder(std::move(mdns_responder));
}
// Returns null on failure.
std::unique_ptr<SessionDescriptionInterface> CreateOfferAndWait() {
rtc::scoped_refptr<MockCreateSessionDescriptionObserver> observer(
new rtc::RefCountedObject<MockCreateSessionDescriptionObserver>());
pc()->CreateOffer(observer, offer_answer_options_);
return WaitForDescriptionFromObserver(observer);
}
private:
explicit PeerConnectionWrapper(const std::string& debug_name)
: debug_name_(debug_name) {}
bool Init(
const PeerConnectionFactory::Options* options,
const PeerConnectionInterface::RTCConfiguration* config,
webrtc::PeerConnectionDependencies dependencies,
rtc::Thread* network_thread,
rtc::Thread* worker_thread,
std::unique_ptr<webrtc::FakeRtcEventLogFactory> event_log_factory,
std::unique_ptr<webrtc::MediaTransportFactory> media_transport_factory) {
// There's an error in this test code if Init ends up being called twice.
RTC_DCHECK(!peer_connection_);
RTC_DCHECK(!peer_connection_factory_);
fake_network_manager_.reset(new rtc::FakeNetworkManager());
fake_network_manager_->AddInterface(kDefaultLocalAddress);
std::unique_ptr<cricket::PortAllocator> port_allocator(
new cricket::BasicPortAllocator(fake_network_manager_.get()));
port_allocator_ = port_allocator.get();
fake_audio_capture_module_ = FakeAudioCaptureModule::Create();
if (!fake_audio_capture_module_) {
return false;
}
rtc::Thread* const signaling_thread = rtc::Thread::Current();
webrtc::PeerConnectionFactoryDependencies pc_factory_dependencies;
pc_factory_dependencies.network_thread = network_thread;
pc_factory_dependencies.worker_thread = worker_thread;
pc_factory_dependencies.signaling_thread = signaling_thread;
pc_factory_dependencies.task_queue_factory =
webrtc::CreateDefaultTaskQueueFactory();
cricket::MediaEngineDependencies media_deps;
media_deps.task_queue_factory =
pc_factory_dependencies.task_queue_factory.get();
media_deps.adm = fake_audio_capture_module_;
webrtc::SetMediaEngineDefaults(&media_deps);
pc_factory_dependencies.media_engine =
cricket::CreateMediaEngine(std::move(media_deps));
pc_factory_dependencies.call_factory = webrtc::CreateCallFactory();
if (event_log_factory) {
event_log_factory_ = event_log_factory.get();
pc_factory_dependencies.event_log_factory = std::move(event_log_factory);
} else {
pc_factory_dependencies.event_log_factory =
std::make_unique<webrtc::RtcEventLogFactory>(
pc_factory_dependencies.task_queue_factory.get());
}
if (media_transport_factory) {
pc_factory_dependencies.media_transport_factory =
std::move(media_transport_factory);
}
peer_connection_factory_ = webrtc::CreateModularPeerConnectionFactory(
std::move(pc_factory_dependencies));
if (!peer_connection_factory_) {
return false;
}
if (options) {
peer_connection_factory_->SetOptions(*options);
}
if (config) {
sdp_semantics_ = config->sdp_semantics;
}
dependencies.allocator = std::move(port_allocator);
peer_connection_ = CreatePeerConnection(config, std::move(dependencies));
return peer_connection_.get() != nullptr;
}
rtc::scoped_refptr<webrtc::PeerConnectionInterface> CreatePeerConnection(
const PeerConnectionInterface::RTCConfiguration* config,
webrtc::PeerConnectionDependencies dependencies) {
PeerConnectionInterface::RTCConfiguration modified_config;
// If |config| is null, this will result in a default configuration being
// used.
if (config) {
modified_config = *config;
}
// Disable resolution adaptation; we don't want it interfering with the
// test results.
// TODO(deadbeef): Do something more robust. Since we're testing for aspect
// ratios and not specific resolutions, is this even necessary?
modified_config.set_cpu_adaptation(false);
dependencies.observer = this;
return peer_connection_factory_->CreatePeerConnection(
modified_config, std::move(dependencies));
}
void set_signaling_message_receiver(
SignalingMessageReceiver* signaling_message_receiver) {
signaling_message_receiver_ = signaling_message_receiver;
}
void set_signaling_delay_ms(int delay_ms) { signaling_delay_ms_ = delay_ms; }
void set_signal_ice_candidates(bool signal) {
signal_ice_candidates_ = signal;
}
rtc::scoped_refptr<webrtc::VideoTrackInterface> CreateLocalVideoTrackInternal(
webrtc::FakePeriodicVideoSource::Config config) {
// Set max frame rate to 10fps to reduce the risk of test flakiness.
// TODO(deadbeef): Do something more robust.
config.frame_interval_ms = 100;
video_track_sources_.emplace_back(
new rtc::RefCountedObject<webrtc::FakePeriodicVideoTrackSource>(
config, false /* remote */));
rtc::scoped_refptr<webrtc::VideoTrackInterface> track(
peer_connection_factory_->CreateVideoTrack(
rtc::CreateRandomUuid(), video_track_sources_.back()));
if (!local_video_renderer_) {
local_video_renderer_.reset(new webrtc::FakeVideoTrackRenderer(track));
}
return track;
}
void HandleIncomingOffer(const std::string& msg) {
RTC_LOG(LS_INFO) << debug_name_ << ": HandleIncomingOffer";
std::unique_ptr<SessionDescriptionInterface> desc =
webrtc::CreateSessionDescription(SdpType::kOffer, msg);
if (received_sdp_munger_) {
received_sdp_munger_(desc->description());
}
EXPECT_TRUE(SetRemoteDescription(std::move(desc)));
// Setting a remote description may have changed the number of receivers,
// so reset the receiver observers.
ResetRtpReceiverObservers();
if (remote_offer_handler_) {
remote_offer_handler_();
}
auto answer = CreateAnswer();
ASSERT_NE(nullptr, answer);
EXPECT_TRUE(SetLocalDescriptionAndSendSdpMessage(std::move(answer)));
}
void HandleIncomingAnswer(const std::string& msg) {
RTC_LOG(LS_INFO) << debug_name_ << ": HandleIncomingAnswer";
std::unique_ptr<SessionDescriptionInterface> desc =
webrtc::CreateSessionDescription(SdpType::kAnswer, msg);
if (received_sdp_munger_) {
received_sdp_munger_(desc->description());
}
EXPECT_TRUE(SetRemoteDescription(std::move(desc)));
// Set the RtpReceiverObserver after receivers are created.
ResetRtpReceiverObservers();
}
// Returns null on failure.
std::unique_ptr<SessionDescriptionInterface> CreateAnswer() {
rtc::scoped_refptr<MockCreateSessionDescriptionObserver> observer(
new rtc::RefCountedObject<MockCreateSessionDescriptionObserver>());
pc()->CreateAnswer(observer, offer_answer_options_);
return WaitForDescriptionFromObserver(observer);
}
std::unique_ptr<SessionDescriptionInterface> WaitForDescriptionFromObserver(
MockCreateSessionDescriptionObserver* observer) {
EXPECT_EQ_WAIT(true, observer->called(), kDefaultTimeout);
if (!observer->result()) {
return nullptr;
}
auto description = observer->MoveDescription();
if (generated_sdp_munger_) {
generated_sdp_munger_(description->description());
}
return description;
}
// Setting the local description and sending the SDP message over the fake
// signaling channel are combined into the same method because the SDP
// message needs to be sent as soon as SetLocalDescription finishes, without
// waiting for the observer to be called. This ensures that ICE candidates
// don't outrace the description.
bool SetLocalDescriptionAndSendSdpMessage(
std::unique_ptr<SessionDescriptionInterface> desc) {
rtc::scoped_refptr<MockSetSessionDescriptionObserver> observer(
new rtc::RefCountedObject<MockSetSessionDescriptionObserver>());
RTC_LOG(LS_INFO) << debug_name_ << ": SetLocalDescriptionAndSendSdpMessage";
SdpType type = desc->GetType();
std::string sdp;
EXPECT_TRUE(desc->ToString(&sdp));
RTC_LOG(LS_INFO) << debug_name_ << ": local SDP contents=\n" << sdp;
pc()->SetLocalDescription(observer, desc.release());
if (sdp_semantics_ == SdpSemantics::kUnifiedPlan) {
RemoveUnusedVideoRenderers();
}
// As mentioned above, we need to send the message immediately after
// SetLocalDescription.
SendSdpMessage(type, sdp);
EXPECT_TRUE_WAIT(observer->called(), kDefaultTimeout);
return true;
}
bool SetRemoteDescription(std::unique_ptr<SessionDescriptionInterface> desc) {
rtc::scoped_refptr<MockSetSessionDescriptionObserver> observer(
new rtc::RefCountedObject<MockSetSessionDescriptionObserver>());
RTC_LOG(LS_INFO) << debug_name_ << ": SetRemoteDescription";
pc()->SetRemoteDescription(observer, desc.release());
if (sdp_semantics_ == SdpSemantics::kUnifiedPlan) {
RemoveUnusedVideoRenderers();
}
EXPECT_TRUE_WAIT(observer->called(), kDefaultTimeout);
return observer->result();
}
// This is a work around to remove unused fake_video_renderers from
// transceivers that have either stopped or are no longer receiving.
void RemoveUnusedVideoRenderers() {
auto transceivers = pc()->GetTransceivers();
for (auto& transceiver : transceivers) {
if (transceiver->receiver()->media_type() != cricket::MEDIA_TYPE_VIDEO) {
continue;
}
// Remove fake video renderers from any stopped transceivers.
if (transceiver->stopped()) {
auto it =
fake_video_renderers_.find(transceiver->receiver()->track()->id());
if (it != fake_video_renderers_.end()) {
fake_video_renderers_.erase(it);
}
}
// Remove fake video renderers from any transceivers that are no longer
// receiving.
if ((transceiver->current_direction() &&
!webrtc::RtpTransceiverDirectionHasRecv(
*transceiver->current_direction()))) {
auto it =
fake_video_renderers_.find(transceiver->receiver()->track()->id());
if (it != fake_video_renderers_.end()) {
fake_video_renderers_.erase(it);
}
}
}
}
// Simulate sending a blob of SDP with delay |signaling_delay_ms_| (0 by
// default).
void SendSdpMessage(SdpType type, const std::string& msg) {
if (signaling_delay_ms_ == 0) {
RelaySdpMessageIfReceiverExists(type, msg);
} else {
invoker_.AsyncInvokeDelayed<void>(
RTC_FROM_HERE, rtc::Thread::Current(),
rtc::Bind(&PeerConnectionWrapper::RelaySdpMessageIfReceiverExists,
this, type, msg),
signaling_delay_ms_);
}
}
void RelaySdpMessageIfReceiverExists(SdpType type, const std::string& msg) {
if (signaling_message_receiver_) {
signaling_message_receiver_->ReceiveSdpMessage(type, msg);
}
}
// Simulate trickling an ICE candidate with delay |signaling_delay_ms_| (0 by
// default).
void SendIceMessage(const std::string& sdp_mid,
int sdp_mline_index,
const std::string& msg) {
if (signaling_delay_ms_ == 0) {
RelayIceMessageIfReceiverExists(sdp_mid, sdp_mline_index, msg);
} else {
invoker_.AsyncInvokeDelayed<void>(
RTC_FROM_HERE, rtc::Thread::Current(),
rtc::Bind(&PeerConnectionWrapper::RelayIceMessageIfReceiverExists,
this, sdp_mid, sdp_mline_index, msg),
signaling_delay_ms_);
}
}
void RelayIceMessageIfReceiverExists(const std::string& sdp_mid,
int sdp_mline_index,
const std::string& msg) {
if (signaling_message_receiver_) {
signaling_message_receiver_->ReceiveIceMessage(sdp_mid, sdp_mline_index,
msg);
}
}
// SignalingMessageReceiver callbacks.
void ReceiveSdpMessage(SdpType type, const std::string& msg) override {
if (type == SdpType::kOffer) {
HandleIncomingOffer(msg);
} else {
HandleIncomingAnswer(msg);
}
}
void ReceiveIceMessage(const std::string& sdp_mid,
int sdp_mline_index,
const std::string& msg) override {
RTC_LOG(LS_INFO) << debug_name_ << ": ReceiveIceMessage";
std::unique_ptr<webrtc::IceCandidateInterface> candidate(
webrtc::CreateIceCandidate(sdp_mid, sdp_mline_index, msg, nullptr));
EXPECT_TRUE(pc()->AddIceCandidate(candidate.get()));
}
// PeerConnectionObserver callbacks.
void OnSignalingChange(
webrtc::PeerConnectionInterface::SignalingState new_state) override {
EXPECT_EQ(pc()->signaling_state(), new_state);
peer_connection_signaling_state_history_.push_back(new_state);
}
void OnAddTrack(rtc::scoped_refptr<RtpReceiverInterface> receiver,
const std::vector<rtc::scoped_refptr<MediaStreamInterface>>&
streams) override {
if (receiver->media_type() == cricket::MEDIA_TYPE_VIDEO) {
rtc::scoped_refptr<VideoTrackInterface> video_track(
static_cast<VideoTrackInterface*>(receiver->track().get()));
ASSERT_TRUE(fake_video_renderers_.find(video_track->id()) ==
fake_video_renderers_.end());
fake_video_renderers_[video_track->id()] =
std::make_unique<FakeVideoTrackRenderer>(video_track);
}
}
void OnRemoveTrack(
rtc::scoped_refptr<RtpReceiverInterface> receiver) override {
if (receiver->media_type() == cricket::MEDIA_TYPE_VIDEO) {
auto it = fake_video_renderers_.find(receiver->track()->id());
RTC_DCHECK(it != fake_video_renderers_.end());
fake_video_renderers_.erase(it);
}
}
void OnRenegotiationNeeded() override {}
void OnIceConnectionChange(
webrtc::PeerConnectionInterface::IceConnectionState new_state) override {
EXPECT_EQ(pc()->ice_connection_state(), new_state);
ice_connection_state_history_.push_back(new_state);
}
void OnStandardizedIceConnectionChange(
webrtc::PeerConnectionInterface::IceConnectionState new_state) override {
standardized_ice_connection_state_history_.push_back(new_state);
}
void OnConnectionChange(
webrtc::PeerConnectionInterface::PeerConnectionState new_state) override {
peer_connection_state_history_.push_back(new_state);
}
void OnIceGatheringChange(
webrtc::PeerConnectionInterface::IceGatheringState new_state) override {
EXPECT_EQ(pc()->ice_gathering_state(), new_state);
ice_gathering_state_history_.push_back(new_state);
}
void OnIceSelectedCandidatePairChanged(
const cricket::CandidatePairChangeEvent& event) {
ice_candidate_pair_change_history_.push_back(event);
}
void OnIceCandidate(const webrtc::IceCandidateInterface* candidate) override {
RTC_LOG(LS_INFO) << debug_name_ << ": OnIceCandidate";
if (remote_async_resolver_) {
const auto& local_candidate = candidate->candidate();
if (local_candidate.address().IsUnresolvedIP()) {
RTC_DCHECK(local_candidate.type() == cricket::LOCAL_PORT_TYPE);
rtc::SocketAddress resolved_addr(local_candidate.address());
const auto resolved_ip = mdns_responder_->GetMappedAddressForName(
local_candidate.address().hostname());
RTC_DCHECK(!resolved_ip.IsNil());
resolved_addr.SetResolvedIP(resolved_ip);
EXPECT_CALL(*remote_async_resolver_, GetResolvedAddress(_, _))
.WillOnce(DoAll(SetArgPointee<1>(resolved_addr), Return(true)));
EXPECT_CALL(*remote_async_resolver_, Destroy(_));
}
}
std::string ice_sdp;
EXPECT_TRUE(candidate->ToString(&ice_sdp));
if (signaling_message_receiver_ == nullptr || !signal_ice_candidates_) {
// Remote party may be deleted.
return;
}
SendIceMessage(candidate->sdp_mid(), candidate->sdp_mline_index(), ice_sdp);
last_candidate_gathered_ = candidate->candidate();
}
void OnIceCandidateError(const std::string& address,
int port,
const std::string& url,
int error_code,
const std::string& error_text) override {
error_event_ = cricket::IceCandidateErrorEvent(address, port, url,
error_code, error_text);
}
void OnDataChannel(
rtc::scoped_refptr<DataChannelInterface> data_channel) override {
RTC_LOG(LS_INFO) << debug_name_ << ": OnDataChannel";
data_channel_ = data_channel;
data_observer_.reset(new MockDataChannelObserver(data_channel));
}
std::string debug_name_;
std::unique_ptr<rtc::FakeNetworkManager> fake_network_manager_;
// Reference to the mDNS responder owned by |fake_network_manager_| after set.
webrtc::FakeMdnsResponder* mdns_responder_ = nullptr;
rtc::scoped_refptr<webrtc::PeerConnectionInterface> peer_connection_;
rtc::scoped_refptr<webrtc::PeerConnectionFactoryInterface>
peer_connection_factory_;
cricket::PortAllocator* port_allocator_;
// Needed to keep track of number of frames sent.
rtc::scoped_refptr<FakeAudioCaptureModule> fake_audio_capture_module_;
// Needed to keep track of number of frames received.
std::map<std::string, std::unique_ptr<webrtc::FakeVideoTrackRenderer>>
fake_video_renderers_;
// Needed to ensure frames aren't received for removed tracks.
std::vector<std::unique_ptr<webrtc::FakeVideoTrackRenderer>>
removed_fake_video_renderers_;
// For remote peer communication.
SignalingMessageReceiver* signaling_message_receiver_ = nullptr;
int signaling_delay_ms_ = 0;
bool signal_ice_candidates_ = true;
cricket::Candidate last_candidate_gathered_;
cricket::IceCandidateErrorEvent error_event_;
// Store references to the video sources we've created, so that we can stop
// them, if required.
std::vector<rtc::scoped_refptr<webrtc::VideoTrackSource>>
video_track_sources_;
// |local_video_renderer_| attached to the first created local video track.
std::unique_ptr<webrtc::FakeVideoTrackRenderer> local_video_renderer_;
SdpSemantics sdp_semantics_;
PeerConnectionInterface::RTCOfferAnswerOptions offer_answer_options_;
std::function<void(cricket::SessionDescription*)> received_sdp_munger_;
std::function<void(cricket::SessionDescription*)> generated_sdp_munger_;
std::function<void()> remote_offer_handler_;
rtc::MockAsyncResolver* remote_async_resolver_ = nullptr;
rtc::scoped_refptr<DataChannelInterface> data_channel_;
std::unique_ptr<MockDataChannelObserver> data_observer_;
std::vector<std::unique_ptr<MockRtpReceiverObserver>> rtp_receiver_observers_;
std::vector<PeerConnectionInterface::IceConnectionState>
ice_connection_state_history_;
std::vector<PeerConnectionInterface::IceConnectionState>
standardized_ice_connection_state_history_;
std::vector<PeerConnectionInterface::PeerConnectionState>
peer_connection_state_history_;
std::vector<PeerConnectionInterface::IceGatheringState>
ice_gathering_state_history_;
std::vector<cricket::CandidatePairChangeEvent>
ice_candidate_pair_change_history_;
std::vector<PeerConnectionInterface::SignalingState>
peer_connection_signaling_state_history_;
webrtc::FakeRtcEventLogFactory* event_log_factory_;
rtc::AsyncInvoker invoker_;
friend class PeerConnectionIntegrationBaseTest;
};
class MockRtcEventLogOutput : public webrtc::RtcEventLogOutput {
public:
virtual ~MockRtcEventLogOutput() = default;
MOCK_CONST_METHOD0(IsActive, bool());
MOCK_METHOD1(Write, bool(const std::string&));
};
// This helper object is used for both specifying how many audio/video frames
// are expected to be received for a caller/callee. It provides helper functions
// to specify these expectations. The object initially starts in a state of no
// expectations.
class MediaExpectations {
public:
enum ExpectFrames {
kExpectSomeFrames,
kExpectNoFrames,
kNoExpectation,
};
void ExpectBidirectionalAudioAndVideo() {
ExpectBidirectionalAudio();
ExpectBidirectionalVideo();
}
void ExpectBidirectionalAudio() {
CallerExpectsSomeAudio();
CalleeExpectsSomeAudio();
}
void ExpectNoAudio() {
CallerExpectsNoAudio();
CalleeExpectsNoAudio();
}
void ExpectBidirectionalVideo() {
CallerExpectsSomeVideo();
CalleeExpectsSomeVideo();
}
void ExpectNoVideo() {
CallerExpectsNoVideo();
CalleeExpectsNoVideo();
}
void CallerExpectsSomeAudioAndVideo() {
CallerExpectsSomeAudio();
CallerExpectsSomeVideo();
}
void CalleeExpectsSomeAudioAndVideo() {
CalleeExpectsSomeAudio();
CalleeExpectsSomeVideo();
}
// Caller's audio functions.
void CallerExpectsSomeAudio(
int expected_audio_frames = kDefaultExpectedAudioFrameCount) {
caller_audio_expectation_ = kExpectSomeFrames;
caller_audio_frames_expected_ = expected_audio_frames;
}
void CallerExpectsNoAudio() {
caller_audio_expectation_ = kExpectNoFrames;
caller_audio_frames_expected_ = 0;
}
// Caller's video functions.
void CallerExpectsSomeVideo(
int expected_video_frames = kDefaultExpectedVideoFrameCount) {
caller_video_expectation_ = kExpectSomeFrames;
caller_video_frames_expected_ = expected_video_frames;
}
void CallerExpectsNoVideo() {
caller_video_expectation_ = kExpectNoFrames;
caller_video_frames_expected_ = 0;
}
// Callee's audio functions.
void CalleeExpectsSomeAudio(
int expected_audio_frames = kDefaultExpectedAudioFrameCount) {
callee_audio_expectation_ = kExpectSomeFrames;
callee_audio_frames_expected_ = expected_audio_frames;
}
void CalleeExpectsNoAudio() {
callee_audio_expectation_ = kExpectNoFrames;
callee_audio_frames_expected_ = 0;
}
// Callee's video functions.
void CalleeExpectsSomeVideo(
int expected_video_frames = kDefaultExpectedVideoFrameCount) {
callee_video_expectation_ = kExpectSomeFrames;
callee_video_frames_expected_ = expected_video_frames;
}
void CalleeExpectsNoVideo() {
callee_video_expectation_ = kExpectNoFrames;
callee_video_frames_expected_ = 0;
}
ExpectFrames caller_audio_expectation_ = kNoExpectation;
ExpectFrames caller_video_expectation_ = kNoExpectation;
ExpectFrames callee_audio_expectation_ = kNoExpectation;
ExpectFrames callee_video_expectation_ = kNoExpectation;
int caller_audio_frames_expected_ = 0;
int caller_video_frames_expected_ = 0;
int callee_audio_frames_expected_ = 0;
int callee_video_frames_expected_ = 0;
};
class MockIceTransport : public webrtc::IceTransportInterface {
public:
MockIceTransport(const std::string& name, int component)
: internal_(std::make_unique<cricket::FakeIceTransport>(
name,
component,
nullptr /* network_thread */)) {}
~MockIceTransport() = default;
cricket::IceTransportInternal* internal() { return internal_.get(); }
private:
std::unique_ptr<cricket::FakeIceTransport> internal_;
};
class MockIceTransportFactory : public IceTransportFactory {
public:
~MockIceTransportFactory() override = default;
rtc::scoped_refptr<IceTransportInterface> CreateIceTransport(
const std::string& transport_name,
int component,
IceTransportInit init) {
RecordIceTransportCreated();
return new rtc::RefCountedObject<MockIceTransport>(transport_name,
component);
}
MOCK_METHOD0(RecordIceTransportCreated, void());
};
// Tests two PeerConnections connecting to each other end-to-end, using a
// virtual network, fake A/V capture and fake encoder/decoders. The
// PeerConnections share the threads/socket servers, but use separate versions
// of everything else (including "PeerConnectionFactory"s).
class PeerConnectionIntegrationBaseTest : public ::testing::Test {
public:
explicit PeerConnectionIntegrationBaseTest(SdpSemantics sdp_semantics)
: sdp_semantics_(sdp_semantics),
ss_(new rtc::VirtualSocketServer()),
fss_(new rtc::FirewallSocketServer(ss_.get())),
network_thread_(new rtc::Thread(fss_.get())),
worker_thread_(rtc::Thread::Create()),
loopback_media_transports_(network_thread_.get()) {
network_thread_->SetName("PCNetworkThread", this);
worker_thread_->SetName("PCWorkerThread", this);
RTC_CHECK(network_thread_->Start());
RTC_CHECK(worker_thread_->Start());
webrtc::metrics::Reset();
}
~PeerConnectionIntegrationBaseTest() {
// The PeerConnections should deleted before the TurnCustomizers.
// A TurnPort is created with a raw pointer to a TurnCustomizer. The
// TurnPort has the same lifetime as the PeerConnection, so it's expected
// that the TurnCustomizer outlives the life of the PeerConnection or else
// when Send() is called it will hit a seg fault.
if (caller_) {
caller_->set_signaling_message_receiver(nullptr);
delete SetCallerPcWrapperAndReturnCurrent(nullptr);
}
if (callee_) {
callee_->set_signaling_message_receiver(nullptr);
delete SetCalleePcWrapperAndReturnCurrent(nullptr);
}
// If turn servers were created for the test they need to be destroyed on
// the network thread.
network_thread()->Invoke<void>(RTC_FROM_HERE, [this] {
turn_servers_.clear();
turn_customizers_.clear();
});
}
bool SignalingStateStable() {
return caller_->SignalingStateStable() && callee_->SignalingStateStable();
}
bool DtlsConnected() {
// TODO(deadbeef): kIceConnectionConnected currently means both ICE and DTLS
// are connected. This is an important distinction. Once we have separate
// ICE and DTLS state, this check needs to use the DTLS state.
return (callee()->ice_connection_state() ==
webrtc::PeerConnectionInterface::kIceConnectionConnected ||
callee()->ice_connection_state() ==
webrtc::PeerConnectionInterface::kIceConnectionCompleted) &&
(caller()->ice_connection_state() ==
webrtc::PeerConnectionInterface::kIceConnectionConnected ||
caller()->ice_connection_state() ==
webrtc::PeerConnectionInterface::kIceConnectionCompleted);
}
// When |event_log_factory| is null, the default implementation of the event
// log factory will be used.
std::unique_ptr<PeerConnectionWrapper> CreatePeerConnectionWrapper(
const std::string& debug_name,
const PeerConnectionFactory::Options* options,
const RTCConfiguration* config,
webrtc::PeerConnectionDependencies dependencies,
std::unique_ptr<webrtc::FakeRtcEventLogFactory> event_log_factory,
std::unique_ptr<webrtc::MediaTransportFactory> media_transport_factory) {
RTCConfiguration modified_config;
if (config) {
modified_config = *config;
}
modified_config.sdp_semantics = sdp_semantics_;
if (!dependencies.cert_generator) {
dependencies.cert_generator =
std::make_unique<FakeRTCCertificateGenerator>();
}
std::unique_ptr<PeerConnectionWrapper> client(
new PeerConnectionWrapper(debug_name));
if (!client->Init(options, &modified_config, std::move(dependencies),
network_thread_.get(), worker_thread_.get(),
std::move(event_log_factory),
std::move(media_transport_factory))) {
return nullptr;
}
return client;
}
std::unique_ptr<PeerConnectionWrapper>
CreatePeerConnectionWrapperWithFakeRtcEventLog(
const std::string& debug_name,
const PeerConnectionFactory::Options* options,
const RTCConfiguration* config,
webrtc::PeerConnectionDependencies dependencies) {
std::unique_ptr<webrtc::FakeRtcEventLogFactory> event_log_factory(
new webrtc::FakeRtcEventLogFactory(rtc::Thread::Current()));
return CreatePeerConnectionWrapper(debug_name, options, config,
std::move(dependencies),
std::move(event_log_factory),
/*media_transport_factory=*/nullptr);
}
bool CreatePeerConnectionWrappers() {
return CreatePeerConnectionWrappersWithConfig(
PeerConnectionInterface::RTCConfiguration(),
PeerConnectionInterface::RTCConfiguration());
}
bool CreatePeerConnectionWrappersWithSdpSemantics(
SdpSemantics caller_semantics,
SdpSemantics callee_semantics) {
// Can't specify the sdp_semantics in the passed-in configuration since it
// will be overwritten by CreatePeerConnectionWrapper with whatever is
// stored in sdp_semantics_. So get around this by modifying the instance
// variable before calling CreatePeerConnectionWrapper for the caller and
// callee PeerConnections.
SdpSemantics original_semantics = sdp_semantics_;
sdp_semantics_ = caller_semantics;
caller_ = CreatePeerConnectionWrapper(
"Caller", nullptr, nullptr, webrtc::PeerConnectionDependencies(nullptr),
nullptr, /*media_transport_factory=*/nullptr);
sdp_semantics_ = callee_semantics;
callee_ = CreatePeerConnectionWrapper(
"Callee", nullptr, nullptr, webrtc::PeerConnectionDependencies(nullptr),
nullptr, /*media_transport_factory=*/nullptr);
sdp_semantics_ = original_semantics;
return caller_ && callee_;
}
bool CreatePeerConnectionWrappersWithConfig(
const PeerConnectionInterface::RTCConfiguration& caller_config,
const PeerConnectionInterface::RTCConfiguration& callee_config) {
caller_ = CreatePeerConnectionWrapper(
"Caller", nullptr, &caller_config,
webrtc::PeerConnectionDependencies(nullptr), nullptr,
/*media_transport_factory=*/nullptr);
callee_ = CreatePeerConnectionWrapper(
"Callee", nullptr, &callee_config,
webrtc::PeerConnectionDependencies(nullptr), nullptr,
/*media_transport_factory=*/nullptr);
return caller_ && callee_;
}
bool CreatePeerConnectionWrappersWithConfigAndMediaTransportFactory(
const PeerConnectionInterface::RTCConfiguration& caller_config,
const PeerConnectionInterface::RTCConfiguration& callee_config,
std::unique_ptr<webrtc::MediaTransportFactory> caller_factory,
std::unique_ptr<webrtc::MediaTransportFactory> callee_factory) {
caller_ =
CreatePeerConnectionWrapper("Caller", nullptr, &caller_config,
webrtc::PeerConnectionDependencies(nullptr),
nullptr, std::move(caller_factory));
callee_ =
CreatePeerConnectionWrapper("Callee", nullptr, &callee_config,
webrtc::PeerConnectionDependencies(nullptr),
nullptr, std::move(callee_factory));
return caller_ && callee_;
}
bool CreatePeerConnectionWrappersWithConfigAndDeps(
const PeerConnectionInterface::RTCConfiguration& caller_config,
webrtc::PeerConnectionDependencies caller_dependencies,
const PeerConnectionInterface::RTCConfiguration& callee_config,
webrtc::PeerConnectionDependencies callee_dependencies) {
caller_ =
CreatePeerConnectionWrapper("Caller", nullptr, &caller_config,
std::move(caller_dependencies), nullptr,
/*media_transport_factory=*/nullptr);
callee_ =
CreatePeerConnectionWrapper("Callee", nullptr, &callee_config,
std::move(callee_dependencies), nullptr,
/*media_transport_factory=*/nullptr);
return caller_ && callee_;
}
bool CreatePeerConnectionWrappersWithOptions(
const PeerConnectionFactory::Options& caller_options,
const PeerConnectionFactory::Options& callee_options) {
caller_ = CreatePeerConnectionWrapper(
"Caller", &caller_options, nullptr,
webrtc::PeerConnectionDependencies(nullptr), nullptr,
/*media_transport_factory=*/nullptr);
callee_ = CreatePeerConnectionWrapper(
"Callee", &callee_options, nullptr,
webrtc::PeerConnectionDependencies(nullptr), nullptr,
/*media_transport_factory=*/nullptr);
return caller_ && callee_;
}
bool CreatePeerConnectionWrappersWithFakeRtcEventLog() {
PeerConnectionInterface::RTCConfiguration default_config;
caller_ = CreatePeerConnectionWrapperWithFakeRtcEventLog(
"Caller", nullptr, &default_config,
webrtc::PeerConnectionDependencies(nullptr));
callee_ = CreatePeerConnectionWrapperWithFakeRtcEventLog(
"Callee", nullptr, &default_config,
webrtc::PeerConnectionDependencies(nullptr));
return caller_ && callee_;
}
std::unique_ptr<PeerConnectionWrapper>
CreatePeerConnectionWrapperWithAlternateKey() {
std::unique_ptr<FakeRTCCertificateGenerator> cert_generator(
new FakeRTCCertificateGenerator());
cert_generator->use_alternate_key();
webrtc::PeerConnectionDependencies dependencies(nullptr);
dependencies.cert_generator = std::move(cert_generator);
return CreatePeerConnectionWrapper("New Peer", nullptr, nullptr,
std::move(dependencies), nullptr,
/*media_transport_factory=*/nullptr);
}
cricket::TestTurnServer* CreateTurnServer(
rtc::SocketAddress internal_address,
rtc::SocketAddress external_address,
cricket::ProtocolType type = cricket::ProtocolType::PROTO_UDP,
const std::string& common_name = "test turn server") {
rtc::Thread* thread = network_thread();
std::unique_ptr<cricket::TestTurnServer> turn_server =
network_thread()->Invoke<std::unique_ptr<cricket::TestTurnServer>>(
RTC_FROM_HERE,
[thread, internal_address, external_address, type, common_name] {
return std::make_unique<cricket::TestTurnServer>(
thread, internal_address, external_address, type,
/*ignore_bad_certs=*/true, common_name);
});
turn_servers_.push_back(std::move(turn_server));
// Interactions with the turn server should be done on the network thread.
return turn_servers_.back().get();
}
cricket::TestTurnCustomizer* CreateTurnCustomizer() {
std::unique_ptr<cricket::TestTurnCustomizer> turn_customizer =
network_thread()->Invoke<std::unique_ptr<cricket::TestTurnCustomizer>>(
RTC_FROM_HERE,
[] { return std::make_unique<cricket::TestTurnCustomizer>(); });
turn_customizers_.push_back(std::move(turn_customizer));
// Interactions with the turn customizer should be done on the network
// thread.
return turn_customizers_.back().get();
}
// Checks that the function counters for a TestTurnCustomizer are greater than
// 0.
void ExpectTurnCustomizerCountersIncremented(
cricket::TestTurnCustomizer* turn_customizer) {
unsigned int allow_channel_data_counter =
network_thread()->Invoke<unsigned int>(
RTC_FROM_HERE, [turn_customizer] {
return turn_customizer->allow_channel_data_cnt_;
});
EXPECT_GT(allow_channel_data_counter, 0u);
unsigned int modify_counter = network_thread()->Invoke<unsigned int>(
RTC_FROM_HERE,
[turn_customizer] { return turn_customizer->modify_cnt_; });
EXPECT_GT(modify_counter, 0u);
}
// Once called, SDP blobs and ICE candidates will be automatically signaled
// between PeerConnections.
void ConnectFakeSignaling() {
caller_->set_signaling_message_receiver(callee_.get());
callee_->set_signaling_message_receiver(caller_.get());
}
// Once called, SDP blobs will be automatically signaled between
// PeerConnections. Note that ICE candidates will not be signaled unless they
// are in the exchanged SDP blobs.
void ConnectFakeSignalingForSdpOnly() {
ConnectFakeSignaling();
SetSignalIceCandidates(false);
}
void SetSignalingDelayMs(int delay_ms) {
caller_->set_signaling_delay_ms(delay_ms);
callee_->set_signaling_delay_ms(delay_ms);
}
void SetSignalIceCandidates(bool signal) {
caller_->set_signal_ice_candidates(signal);
callee_->set_signal_ice_candidates(signal);
}
// Messages may get lost on the unreliable DataChannel, so we send multiple
// times to avoid test flakiness.
void SendRtpDataWithRetries(webrtc::DataChannelInterface* dc,
const std::string& data,
int retries) {
for (int i = 0; i < retries; ++i) {
dc->Send(DataBuffer(data));
}
}
rtc::Thread* network_thread() { return network_thread_.get(); }
rtc::VirtualSocketServer* virtual_socket_server() { return ss_.get(); }
webrtc::MediaTransportPair* loopback_media_transports() {
return &loopback_media_transports_;
}
PeerConnectionWrapper* caller() { return caller_.get(); }
// Set the |caller_| to the |wrapper| passed in and return the
// original |caller_|.
PeerConnectionWrapper* SetCallerPcWrapperAndReturnCurrent(
PeerConnectionWrapper* wrapper) {
PeerConnectionWrapper* old = caller_.release();
caller_.reset(wrapper);
return old;
}
PeerConnectionWrapper* callee() { return callee_.get(); }
// Set the |callee_| to the |wrapper| passed in and return the
// original |callee_|.
PeerConnectionWrapper* SetCalleePcWrapperAndReturnCurrent(
PeerConnectionWrapper* wrapper) {
PeerConnectionWrapper* old = callee_.release();
callee_.reset(wrapper);
return old;
}
void SetPortAllocatorFlags(uint32_t caller_flags, uint32_t callee_flags) {
network_thread()->Invoke<void>(
RTC_FROM_HERE, rtc::Bind(&cricket::PortAllocator::set_flags,
caller()->port_allocator(), caller_flags));
network_thread()->Invoke<void>(
RTC_FROM_HERE, rtc::Bind(&cricket::PortAllocator::set_flags,
callee()->port_allocator(), callee_flags));
}
rtc::FirewallSocketServer* firewall() const { return fss_.get(); }
// Expects the provided number of new frames to be received within
// kMaxWaitForFramesMs. The new expected frames are specified in
// |media_expectations|. Returns false if any of the expectations were
// not met.
bool ExpectNewFrames(const MediaExpectations& media_expectations) {
// First initialize the expected frame counts based upon the current
// frame count.
int total_caller_audio_frames_expected = caller()->audio_frames_received();
if (media_expectations.caller_audio_expectation_ ==
MediaExpectations::kExpectSomeFrames) {
total_caller_audio_frames_expected +=
media_expectations.caller_audio_frames_expected_;
}
int total_caller_video_frames_expected =
caller()->min_video_frames_received_per_track();
if (media_expectations.caller_video_expectation_ ==
MediaExpectations::kExpectSomeFrames) {
total_caller_video_frames_expected +=
media_expectations.caller_video_frames_expected_;
}
int total_callee_audio_frames_expected = callee()->audio_frames_received();
if (media_expectations.callee_audio_expectation_ ==
MediaExpectations::kExpectSomeFrames) {
total_callee_audio_frames_expected +=
media_expectations.callee_audio_frames_expected_;
}
int total_callee_video_frames_expected =
callee()->min_video_frames_received_per_track();
if (media_expectations.callee_video_expectation_ ==
MediaExpectations::kExpectSomeFrames) {
total_callee_video_frames_expected +=
media_expectations.callee_video_frames_expected_;
}
// Wait for the expected frames.
EXPECT_TRUE_WAIT(caller()->audio_frames_received() >=
total_caller_audio_frames_expected &&
caller()->min_video_frames_received_per_track() >=
total_caller_video_frames_expected &&
callee()->audio_frames_received() >=
total_callee_audio_frames_expected &&
callee()->min_video_frames_received_per_track() >=
total_callee_video_frames_expected,
kMaxWaitForFramesMs);
bool expectations_correct =
caller()->audio_frames_received() >=
total_caller_audio_frames_expected &&
caller()->min_video_frames_received_per_track() >=
total_caller_video_frames_expected &&
callee()->audio_frames_received() >=
total_callee_audio_frames_expected &&
callee()->min_video_frames_received_per_track() >=
total_callee_video_frames_expected;
// After the combined wait, print out a more detailed message upon
// failure.
EXPECT_GE(caller()->audio_frames_received(),
total_caller_audio_frames_expected);
EXPECT_GE(caller()->min_video_frames_received_per_track(),
total_caller_video_frames_expected);
EXPECT_GE(callee()->audio_frames_received(),
total_callee_audio_frames_expected);
EXPECT_GE(callee()->min_video_frames_received_per_track(),
total_callee_video_frames_expected);
// We want to make sure nothing unexpected was received.
if (media_expectations.caller_audio_expectation_ ==
MediaExpectations::kExpectNoFrames) {
EXPECT_EQ(caller()->audio_frames_received(),
total_caller_audio_frames_expected);
if (caller()->audio_frames_received() !=
total_caller_audio_frames_expected) {
expectations_correct = false;
}
}
if (media_expectations.caller_video_expectation_ ==
MediaExpectations::kExpectNoFrames) {
EXPECT_EQ(caller()->min_video_frames_received_per_track(),
total_caller_video_frames_expected);
if (caller()->min_video_frames_received_per_track() !=
total_caller_video_frames_expected) {
expectations_correct = false;
}
}
if (media_expectations.callee_audio_expectation_ ==
MediaExpectations::kExpectNoFrames) {
EXPECT_EQ(callee()->audio_frames_received(),
total_callee_audio_frames_expected);
if (callee()->audio_frames_received() !=
total_callee_audio_frames_expected) {
expectations_correct = false;
}
}
if (media_expectations.callee_video_expectation_ ==
MediaExpectations::kExpectNoFrames) {
EXPECT_EQ(callee()->min_video_frames_received_per_track(),
total_callee_video_frames_expected);
if (callee()->min_video_frames_received_per_track() !=
total_callee_video_frames_expected) {
expectations_correct = false;
}
}
return expectations_correct;
}
void ClosePeerConnections() {
caller()->pc()->Close();
callee()->pc()->Close();
}
void TestNegotiatedCipherSuite(
const PeerConnectionFactory::Options& caller_options,
const PeerConnectionFactory::Options& callee_options,
int expected_cipher_suite) {
ASSERT_TRUE(CreatePeerConnectionWrappersWithOptions(caller_options,
callee_options));
ConnectFakeSignaling();
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(DtlsConnected(), kDefaultTimeout);
EXPECT_EQ_WAIT(rtc::SrtpCryptoSuiteToName(expected_cipher_suite),
caller()->OldGetStats()->SrtpCipher(), kDefaultTimeout);
// TODO(bugs.webrtc.org/9456): Fix it.
EXPECT_METRIC_EQ(1, webrtc::metrics::NumEvents(
"WebRTC.PeerConnection.SrtpCryptoSuite.Audio",
expected_cipher_suite));
}
void TestGcmNegotiationUsesCipherSuite(bool local_gcm_enabled,
bool remote_gcm_enabled,
bool aes_ctr_enabled,
int expected_cipher_suite) {
PeerConnectionFactory::Options caller_options;
caller_options.crypto_options.srtp.enable_gcm_crypto_suites =
local_gcm_enabled;
caller_options.crypto_options.srtp.enable_aes128_sha1_80_crypto_cipher =
aes_ctr_enabled;
PeerConnectionFactory::Options callee_options;
callee_options.crypto_options.srtp.enable_gcm_crypto_suites =
remote_gcm_enabled;
callee_options.crypto_options.srtp.enable_aes128_sha1_80_crypto_cipher =
aes_ctr_enabled;
TestNegotiatedCipherSuite(caller_options, callee_options,
expected_cipher_suite);
}
protected:
SdpSemantics sdp_semantics_;
private:
// |ss_| is used by |network_thread_| so it must be destroyed later.
std::unique_ptr<rtc::VirtualSocketServer> ss_;
std::unique_ptr<rtc::FirewallSocketServer> fss_;
// |network_thread_| and |worker_thread_| are used by both
// |caller_| and |callee_| so they must be destroyed
// later.
std::unique_ptr<rtc::Thread> network_thread_;
std::unique_ptr<rtc::Thread> worker_thread_;
// The turn servers and turn customizers should be accessed & deleted on the
// network thread to avoid a race with the socket read/write that occurs
// on the network thread.
std::vector<std::unique_ptr<cricket::TestTurnServer>> turn_servers_;
std::vector<std::unique_ptr<cricket::TestTurnCustomizer>> turn_customizers_;
webrtc::MediaTransportPair loopback_media_transports_;
std::unique_ptr<PeerConnectionWrapper> caller_;
std::unique_ptr<PeerConnectionWrapper> callee_;
};
class PeerConnectionIntegrationTest
: public PeerConnectionIntegrationBaseTest,
public ::testing::WithParamInterface<SdpSemantics> {
protected:
PeerConnectionIntegrationTest()
: PeerConnectionIntegrationBaseTest(GetParam()) {}
};
class PeerConnectionIntegrationTestPlanB
: public PeerConnectionIntegrationBaseTest {
protected:
PeerConnectionIntegrationTestPlanB()
: PeerConnectionIntegrationBaseTest(SdpSemantics::kPlanB) {}
};
class PeerConnectionIntegrationTestUnifiedPlan
: public PeerConnectionIntegrationBaseTest {
protected:
PeerConnectionIntegrationTestUnifiedPlan()
: PeerConnectionIntegrationBaseTest(SdpSemantics::kUnifiedPlan) {}
};
// Test the OnFirstPacketReceived callback from audio/video RtpReceivers. This
// includes testing that the callback is invoked if an observer is connected
// after the first packet has already been received.
TEST_P(PeerConnectionIntegrationTest,
RtpReceiverObserverOnFirstPacketReceived) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
// Start offer/answer exchange and wait for it to complete.
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Should be one receiver each for audio/video.
EXPECT_EQ(2U, caller()->rtp_receiver_observers().size());
EXPECT_EQ(2U, callee()->rtp_receiver_observers().size());
// Wait for all "first packet received" callbacks to be fired.
EXPECT_TRUE_WAIT(
absl::c_all_of(caller()->rtp_receiver_observers(),
[](const std::unique_ptr<MockRtpReceiverObserver>& o) {
return o->first_packet_received();
}),
kMaxWaitForFramesMs);
EXPECT_TRUE_WAIT(
absl::c_all_of(callee()->rtp_receiver_observers(),
[](const std::unique_ptr<MockRtpReceiverObserver>& o) {
return o->first_packet_received();
}),
kMaxWaitForFramesMs);
// If new observers are set after the first packet was already received, the
// callback should still be invoked.
caller()->ResetRtpReceiverObservers();
callee()->ResetRtpReceiverObservers();
EXPECT_EQ(2U, caller()->rtp_receiver_observers().size());
EXPECT_EQ(2U, callee()->rtp_receiver_observers().size());
EXPECT_TRUE(
absl::c_all_of(caller()->rtp_receiver_observers(),
[](const std::unique_ptr<MockRtpReceiverObserver>& o) {
return o->first_packet_received();
}));
EXPECT_TRUE(
absl::c_all_of(callee()->rtp_receiver_observers(),
[](const std::unique_ptr<MockRtpReceiverObserver>& o) {
return o->first_packet_received();
}));
}
class DummyDtmfObserver : public DtmfSenderObserverInterface {
public:
DummyDtmfObserver() : completed_(false) {}
// Implements DtmfSenderObserverInterface.
void OnToneChange(const std::string& tone) override {
tones_.push_back(tone);
if (tone.empty()) {
completed_ = true;
}
}
const std::vector<std::string>& tones() const { return tones_; }
bool completed() const { return completed_; }
private:
bool completed_;
std::vector<std::string> tones_;
};
// Assumes |sender| already has an audio track added and the offer/answer
// exchange is done.
void TestDtmfFromSenderToReceiver(PeerConnectionWrapper* sender,
PeerConnectionWrapper* receiver) {
// We should be able to get a DTMF sender from the local sender.
rtc::scoped_refptr<DtmfSenderInterface> dtmf_sender =
sender->pc()->GetSenders().at(0)->GetDtmfSender();
ASSERT_TRUE(dtmf_sender);
DummyDtmfObserver observer;
dtmf_sender->RegisterObserver(&observer);
// Test the DtmfSender object just created.
EXPECT_TRUE(dtmf_sender->CanInsertDtmf());
EXPECT_TRUE(dtmf_sender->InsertDtmf("1a", 100, 50));
EXPECT_TRUE_WAIT(observer.completed(), kDefaultTimeout);
std::vector<std::string> tones = {"1", "a", ""};
EXPECT_EQ(tones, observer.tones());
dtmf_sender->UnregisterObserver();
// TODO(deadbeef): Verify the tones were actually received end-to-end.
}
// Verifies the DtmfSenderObserver callbacks for a DtmfSender (one in each
// direction).
TEST_P(PeerConnectionIntegrationTest, DtmfSenderObserver) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
// Only need audio for DTMF.
caller()->AddAudioTrack();
callee()->AddAudioTrack();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// DTLS must finish before the DTMF sender can be used reliably.
ASSERT_TRUE_WAIT(DtlsConnected(), kDefaultTimeout);
TestDtmfFromSenderToReceiver(caller(), callee());
TestDtmfFromSenderToReceiver(callee(), caller());
}
// Basic end-to-end test, verifying media can be encoded/transmitted/decoded
// between two connections, using DTLS-SRTP.
TEST_P(PeerConnectionIntegrationTest, EndToEndCallWithDtls) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
// Do normal offer/answer and wait for some frames to be received in each
// direction.
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
EXPECT_METRIC_LE(
2, webrtc::metrics::NumEvents("WebRTC.PeerConnection.KeyProtocol",
webrtc::kEnumCounterKeyProtocolDtls));
EXPECT_METRIC_EQ(
0, webrtc::metrics::NumEvents("WebRTC.PeerConnection.KeyProtocol",
webrtc::kEnumCounterKeyProtocolSdes));
}
// Uses SDES instead of DTLS for key agreement.
TEST_P(PeerConnectionIntegrationTest, EndToEndCallWithSdes) {
PeerConnectionInterface::RTCConfiguration sdes_config;
sdes_config.enable_dtls_srtp.emplace(false);
ASSERT_TRUE(CreatePeerConnectionWrappersWithConfig(sdes_config, sdes_config));
ConnectFakeSignaling();
// Do normal offer/answer and wait for some frames to be received in each
// direction.
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
EXPECT_METRIC_LE(
2, webrtc::metrics::NumEvents("WebRTC.PeerConnection.KeyProtocol",
webrtc::kEnumCounterKeyProtocolSdes));
EXPECT_METRIC_EQ(
0, webrtc::metrics::NumEvents("WebRTC.PeerConnection.KeyProtocol",
webrtc::kEnumCounterKeyProtocolDtls));
}
// Basic end-to-end test specifying the |enable_encrypted_rtp_header_extensions|
// option to offer encrypted versions of all header extensions alongside the
// unencrypted versions.
TEST_P(PeerConnectionIntegrationTest,
EndToEndCallWithEncryptedRtpHeaderExtensions) {
CryptoOptions crypto_options;
crypto_options.srtp.enable_encrypted_rtp_header_extensions = true;
PeerConnectionInterface::RTCConfiguration config;
config.crypto_options = crypto_options;
// Note: This allows offering >14 RTP header extensions.
config.offer_extmap_allow_mixed = true;
ASSERT_TRUE(CreatePeerConnectionWrappersWithConfig(config, config));
ConnectFakeSignaling();
// Do normal offer/answer and wait for some frames to be received in each
// direction.
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
// Tests that the GetRemoteAudioSSLCertificate method returns the remote DTLS
// certificate once the DTLS handshake has finished.
TEST_P(PeerConnectionIntegrationTest,
GetRemoteAudioSSLCertificateReturnsExchangedCertificate) {
auto GetRemoteAudioSSLCertificate = [](PeerConnectionWrapper* wrapper) {
auto pci = reinterpret_cast<PeerConnectionProxy*>(wrapper->pc());
auto pc = reinterpret_cast<PeerConnection*>(pci->internal());
return pc->GetRemoteAudioSSLCertificate();
};
auto GetRemoteAudioSSLCertChain = [](PeerConnectionWrapper* wrapper) {
auto pci = reinterpret_cast<PeerConnectionProxy*>(wrapper->pc());
auto pc = reinterpret_cast<PeerConnection*>(pci->internal());
return pc->GetRemoteAudioSSLCertChain();
};
auto caller_cert = rtc::RTCCertificate::FromPEM(kRsaPems[0]);
auto callee_cert = rtc::RTCCertificate::FromPEM(kRsaPems[1]);
// Configure each side with a known certificate so they can be compared later.
PeerConnectionInterface::RTCConfiguration caller_config;
caller_config.enable_dtls_srtp.emplace(true);
caller_config.certificates.push_back(caller_cert);
PeerConnectionInterface::RTCConfiguration callee_config;
callee_config.enable_dtls_srtp.emplace(true);
callee_config.certificates.push_back(callee_cert);
ASSERT_TRUE(
CreatePeerConnectionWrappersWithConfig(caller_config, callee_config));
ConnectFakeSignaling();
// When first initialized, there should not be a remote SSL certificate (and
// calling this method should not crash).
EXPECT_EQ(nullptr, GetRemoteAudioSSLCertificate(caller()));
EXPECT_EQ(nullptr, GetRemoteAudioSSLCertificate(callee()));
EXPECT_EQ(nullptr, GetRemoteAudioSSLCertChain(caller()));
EXPECT_EQ(nullptr, GetRemoteAudioSSLCertChain(callee()));
caller()->AddAudioTrack();
callee()->AddAudioTrack();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
ASSERT_TRUE_WAIT(DtlsConnected(), kDefaultTimeout);
// Once DTLS has been connected, each side should return the other's SSL
// certificate when calling GetRemoteAudioSSLCertificate.
auto caller_remote_cert = GetRemoteAudioSSLCertificate(caller());
ASSERT_TRUE(caller_remote_cert);
EXPECT_EQ(callee_cert->GetSSLCertificate().ToPEMString(),
caller_remote_cert->ToPEMString());
auto callee_remote_cert = GetRemoteAudioSSLCertificate(callee());
ASSERT_TRUE(callee_remote_cert);
EXPECT_EQ(caller_cert->GetSSLCertificate().ToPEMString(),
callee_remote_cert->ToPEMString());
auto caller_remote_cert_chain = GetRemoteAudioSSLCertChain(caller());
ASSERT_TRUE(caller_remote_cert_chain);
ASSERT_EQ(1U, caller_remote_cert_chain->GetSize());
auto remote_cert = &caller_remote_cert_chain->Get(0);
EXPECT_EQ(callee_cert->GetSSLCertificate().ToPEMString(),
remote_cert->ToPEMString());
auto callee_remote_cert_chain = GetRemoteAudioSSLCertChain(callee());
ASSERT_TRUE(callee_remote_cert_chain);
ASSERT_EQ(1U, callee_remote_cert_chain->GetSize());
remote_cert = &callee_remote_cert_chain->Get(0);
EXPECT_EQ(caller_cert->GetSSLCertificate().ToPEMString(),
remote_cert->ToPEMString());
}
// This test sets up a call between two parties with a source resolution of
// 1280x720 and verifies that a 16:9 aspect ratio is received.
TEST_P(PeerConnectionIntegrationTest,
Send1280By720ResolutionAndReceive16To9AspectRatio) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
// Add video tracks with 16:9 aspect ratio, size 1280 x 720.
webrtc::FakePeriodicVideoSource::Config config;
config.width = 1280;
config.height = 720;
config.timestamp_offset_ms = rtc::TimeMillis();
caller()->AddTrack(caller()->CreateLocalVideoTrackWithConfig(config));
callee()->AddTrack(callee()->CreateLocalVideoTrackWithConfig(config));
// Do normal offer/answer and wait for at least one frame to be received in
// each direction.
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(caller()->min_video_frames_received_per_track() > 0 &&
callee()->min_video_frames_received_per_track() > 0,
kMaxWaitForFramesMs);
// Check rendered aspect ratio.
EXPECT_EQ(16.0 / 9, caller()->local_rendered_aspect_ratio());
EXPECT_EQ(16.0 / 9, caller()->rendered_aspect_ratio());
EXPECT_EQ(16.0 / 9, callee()->local_rendered_aspect_ratio());
EXPECT_EQ(16.0 / 9, callee()->rendered_aspect_ratio());
}
// This test sets up an one-way call, with media only from caller to
// callee.
TEST_P(PeerConnectionIntegrationTest, OneWayMediaCall) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
caller()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
MediaExpectations media_expectations;
media_expectations.CalleeExpectsSomeAudioAndVideo();
media_expectations.CallerExpectsNoAudio();
media_expectations.CallerExpectsNoVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
// This test sets up a audio call initially, with the callee rejecting video
// initially. Then later the callee decides to upgrade to audio/video, and
// initiates a new offer/answer exchange.
TEST_P(PeerConnectionIntegrationTest, AudioToVideoUpgrade) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
// Initially, offer an audio/video stream from the caller, but refuse to
// send/receive video on the callee side.
caller()->AddAudioVideoTracks();
callee()->AddAudioTrack();
if (sdp_semantics_ == SdpSemantics::kPlanB) {
PeerConnectionInterface::RTCOfferAnswerOptions options;
options.offer_to_receive_video = 0;
callee()->SetOfferAnswerOptions(options);
} else {
callee()->SetRemoteOfferHandler([this] {
callee()->GetFirstTransceiverOfType(cricket::MEDIA_TYPE_VIDEO)->Stop();
});
}
// Do offer/answer and make sure audio is still received end-to-end.
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
{
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudio();
media_expectations.ExpectNoVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
// Sanity check that the callee's description has a rejected video section.
ASSERT_NE(nullptr, callee()->pc()->local_description());
const ContentInfo* callee_video_content =
GetFirstVideoContent(callee()->pc()->local_description()->description());
ASSERT_NE(nullptr, callee_video_content);
EXPECT_TRUE(callee_video_content->rejected);
// Now negotiate with video and ensure negotiation succeeds, with video
// frames and additional audio frames being received.
callee()->AddVideoTrack();
if (sdp_semantics_ == SdpSemantics::kPlanB) {
PeerConnectionInterface::RTCOfferAnswerOptions options;
options.offer_to_receive_video = 1;
callee()->SetOfferAnswerOptions(options);
} else {
callee()->SetRemoteOfferHandler(nullptr);
caller()->SetRemoteOfferHandler([this] {
// The caller creates a new transceiver to receive video on when receiving
// the offer, but by default it is send only.
auto transceivers = caller()->pc()->GetTransceivers();
ASSERT_EQ(3U, transceivers.size());
ASSERT_EQ(cricket::MEDIA_TYPE_VIDEO,
transceivers[2]->receiver()->media_type());
transceivers[2]->sender()->SetTrack(caller()->CreateLocalVideoTrack());
transceivers[2]->SetDirection(RtpTransceiverDirection::kSendRecv);
});
}
callee()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
{
// Expect additional audio frames to be received after the upgrade.
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
}
// Simpler than the above test; just add an audio track to an established
// video-only connection.
TEST_P(PeerConnectionIntegrationTest, AddAudioToVideoOnlyCall) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
// Do initial offer/answer with just a video track.
caller()->AddVideoTrack();
callee()->AddVideoTrack();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Now add an audio track and do another offer/answer.
caller()->AddAudioTrack();
callee()->AddAudioTrack();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Ensure both audio and video frames are received end-to-end.
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
// This test sets up a call that's transferred to a new caller with a different
// DTLS fingerprint.
TEST_P(PeerConnectionIntegrationTest, CallTransferredForCallee) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Keep the original peer around which will still send packets to the
// receiving client. These SRTP packets will be dropped.
std::unique_ptr<PeerConnectionWrapper> original_peer(
SetCallerPcWrapperAndReturnCurrent(
CreatePeerConnectionWrapperWithAlternateKey().release()));
// TODO(deadbeef): Why do we call Close here? That goes against the comment
// directly above.
original_peer->pc()->Close();
ConnectFakeSignaling();
caller()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Wait for some additional frames to be transmitted end-to-end.
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
// This test sets up a call that's transferred to a new callee with a different
// DTLS fingerprint.
TEST_P(PeerConnectionIntegrationTest, CallTransferredForCaller) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Keep the original peer around which will still send packets to the
// receiving client. These SRTP packets will be dropped.
std::unique_ptr<PeerConnectionWrapper> original_peer(
SetCalleePcWrapperAndReturnCurrent(
CreatePeerConnectionWrapperWithAlternateKey().release()));
// TODO(deadbeef): Why do we call Close here? That goes against the comment
// directly above.
original_peer->pc()->Close();
ConnectFakeSignaling();
callee()->AddAudioVideoTracks();
caller()->SetOfferAnswerOptions(IceRestartOfferAnswerOptions());
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Wait for some additional frames to be transmitted end-to-end.
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
// This test sets up a non-bundled call and negotiates bundling at the same
// time as starting an ICE restart. When bundling is in effect in the restart,
// the DTLS-SRTP context should be successfully reset.
TEST_P(PeerConnectionIntegrationTest, BundlingEnabledWhileIceRestartOccurs) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
// Remove the bundle group from the SDP received by the callee.
callee()->SetReceivedSdpMunger([](cricket::SessionDescription* desc) {
desc->RemoveGroupByName("BUNDLE");
});
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
{
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
// Now stop removing the BUNDLE group, and trigger an ICE restart.
callee()->SetReceivedSdpMunger(nullptr);
caller()->SetOfferAnswerOptions(IceRestartOfferAnswerOptions());
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Expect additional frames to be received after the ICE restart.
{
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
}
// Test CVO (Coordination of Video Orientation). If a video source is rotated
// and both peers support the CVO RTP header extension, the actual video frames
// don't need to be encoded in different resolutions, since the rotation is
// communicated through the RTP header extension.
TEST_P(PeerConnectionIntegrationTest, RotatedVideoWithCVOExtension) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
// Add rotated video tracks.
caller()->AddTrack(
caller()->CreateLocalVideoTrackWithRotation(webrtc::kVideoRotation_90));
callee()->AddTrack(
callee()->CreateLocalVideoTrackWithRotation(webrtc::kVideoRotation_270));
// Wait for video frames to be received by both sides.
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
ASSERT_TRUE_WAIT(caller()->min_video_frames_received_per_track() > 0 &&
callee()->min_video_frames_received_per_track() > 0,
kMaxWaitForFramesMs);
// Ensure that the aspect ratio is unmodified.
// TODO(deadbeef): Where does 4:3 come from? Should be explicit in the test,
// not just assumed.
EXPECT_EQ(4.0 / 3, caller()->local_rendered_aspect_ratio());
EXPECT_EQ(4.0 / 3, caller()->rendered_aspect_ratio());
EXPECT_EQ(4.0 / 3, callee()->local_rendered_aspect_ratio());
EXPECT_EQ(4.0 / 3, callee()->rendered_aspect_ratio());
// Ensure that the CVO bits were surfaced to the renderer.
EXPECT_EQ(webrtc::kVideoRotation_270, caller()->rendered_rotation());
EXPECT_EQ(webrtc::kVideoRotation_90, callee()->rendered_rotation());
}
// Test that when the CVO extension isn't supported, video is rotated the
// old-fashioned way, by encoding rotated frames.
TEST_P(PeerConnectionIntegrationTest, RotatedVideoWithoutCVOExtension) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
// Add rotated video tracks.
caller()->AddTrack(
caller()->CreateLocalVideoTrackWithRotation(webrtc::kVideoRotation_90));
callee()->AddTrack(
callee()->CreateLocalVideoTrackWithRotation(webrtc::kVideoRotation_270));
// Remove the CVO extension from the offered SDP.
callee()->SetReceivedSdpMunger([](cricket::SessionDescription* desc) {
cricket::VideoContentDescription* video =
GetFirstVideoContentDescription(desc);
video->ClearRtpHeaderExtensions();
});
// Wait for video frames to be received by both sides.
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
ASSERT_TRUE_WAIT(caller()->min_video_frames_received_per_track() > 0 &&
callee()->min_video_frames_received_per_track() > 0,
kMaxWaitForFramesMs);
// Expect that the aspect ratio is inversed to account for the 90/270 degree
// rotation.
// TODO(deadbeef): Where does 4:3 come from? Should be explicit in the test,
// not just assumed.
EXPECT_EQ(3.0 / 4, caller()->local_rendered_aspect_ratio());
EXPECT_EQ(3.0 / 4, caller()->rendered_aspect_ratio());
EXPECT_EQ(3.0 / 4, callee()->local_rendered_aspect_ratio());
EXPECT_EQ(3.0 / 4, callee()->rendered_aspect_ratio());
// Expect that each endpoint is unaware of the rotation of the other endpoint.
EXPECT_EQ(webrtc::kVideoRotation_0, caller()->rendered_rotation());
EXPECT_EQ(webrtc::kVideoRotation_0, callee()->rendered_rotation());
}
// Test that if the answerer rejects the audio m= section, no audio is sent or
// received, but video still can be.
TEST_P(PeerConnectionIntegrationTest, AnswererRejectsAudioSection) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
caller()->AddAudioVideoTracks();
if (sdp_semantics_ == SdpSemantics::kPlanB) {
// Only add video track for callee, and set offer_to_receive_audio to 0, so
// it will reject the audio m= section completely.
PeerConnectionInterface::RTCOfferAnswerOptions options;
options.offer_to_receive_audio = 0;
callee()->SetOfferAnswerOptions(options);
} else {
// Stopping the audio RtpTransceiver will cause the media section to be
// rejected in the answer.
callee()->SetRemoteOfferHandler([this] {
callee()->GetFirstTransceiverOfType(cricket::MEDIA_TYPE_AUDIO)->Stop();
});
}
callee()->AddTrack(callee()->CreateLocalVideoTrack());
// Do offer/answer and wait for successful end-to-end video frames.
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalVideo();
media_expectations.ExpectNoAudio();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
// Sanity check that the callee's description has a rejected audio section.
ASSERT_NE(nullptr, callee()->pc()->local_description());
const ContentInfo* callee_audio_content =
GetFirstAudioContent(callee()->pc()->local_description()->description());
ASSERT_NE(nullptr, callee_audio_content);
EXPECT_TRUE(callee_audio_content->rejected);
if (sdp_semantics_ == SdpSemantics::kUnifiedPlan) {
// The caller's transceiver should have stopped after receiving the answer.
EXPECT_TRUE(caller()
->GetFirstTransceiverOfType(cricket::MEDIA_TYPE_AUDIO)
->stopped());
}
}
// Test that if the answerer rejects the video m= section, no video is sent or
// received, but audio still can be.
TEST_P(PeerConnectionIntegrationTest, AnswererRejectsVideoSection) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
caller()->AddAudioVideoTracks();
if (sdp_semantics_ == SdpSemantics::kPlanB) {
// Only add audio track for callee, and set offer_to_receive_video to 0, so
// it will reject the video m= section completely.
PeerConnectionInterface::RTCOfferAnswerOptions options;
options.offer_to_receive_video = 0;
callee()->SetOfferAnswerOptions(options);
} else {
// Stopping the video RtpTransceiver will cause the media section to be
// rejected in the answer.
callee()->SetRemoteOfferHandler([this] {
callee()->GetFirstTransceiverOfType(cricket::MEDIA_TYPE_VIDEO)->Stop();
});
}
callee()->AddTrack(callee()->CreateLocalAudioTrack());
// Do offer/answer and wait for successful end-to-end audio frames.
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudio();
media_expectations.ExpectNoVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
// Sanity check that the callee's description has a rejected video section.
ASSERT_NE(nullptr, callee()->pc()->local_description());
const ContentInfo* callee_video_content =
GetFirstVideoContent(callee()->pc()->local_description()->description());
ASSERT_NE(nullptr, callee_video_content);
EXPECT_TRUE(callee_video_content->rejected);
if (sdp_semantics_ == SdpSemantics::kUnifiedPlan) {
// The caller's transceiver should have stopped after receiving the answer.
EXPECT_TRUE(caller()
->GetFirstTransceiverOfType(cricket::MEDIA_TYPE_VIDEO)
->stopped());
}
}
// Test that if the answerer rejects both audio and video m= sections, nothing
// bad happens.
// TODO(deadbeef): Test that a data channel still works. Currently this doesn't
// test anything but the fact that negotiation succeeds, which doesn't mean
// much.
TEST_P(PeerConnectionIntegrationTest, AnswererRejectsAudioAndVideoSections) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
caller()->AddAudioVideoTracks();
if (sdp_semantics_ == SdpSemantics::kPlanB) {
// Don't give the callee any tracks, and set offer_to_receive_X to 0, so it
// will reject both audio and video m= sections.
PeerConnectionInterface::RTCOfferAnswerOptions options;
options.offer_to_receive_audio = 0;
options.offer_to_receive_video = 0;
callee()->SetOfferAnswerOptions(options);
} else {
callee()->SetRemoteOfferHandler([this] {
// Stopping all transceivers will cause all media sections to be rejected.
for (const auto& transceiver : callee()->pc()->GetTransceivers()) {
transceiver->Stop();
}
});
}
// Do offer/answer and wait for stable signaling state.
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Sanity check that the callee's description has rejected m= sections.
ASSERT_NE(nullptr, callee()->pc()->local_description());
const ContentInfo* callee_audio_content =
GetFirstAudioContent(callee()->pc()->local_description()->description());
ASSERT_NE(nullptr, callee_audio_content);
EXPECT_TRUE(callee_audio_content->rejected);
const ContentInfo* callee_video_content =
GetFirstVideoContent(callee()->pc()->local_description()->description());
ASSERT_NE(nullptr, callee_video_content);
EXPECT_TRUE(callee_video_content->rejected);
}
// This test sets up an audio and video call between two parties. After the
// call runs for a while, the caller sends an updated offer with video being
// rejected. Once the re-negotiation is done, the video flow should stop and
// the audio flow should continue.
TEST_P(PeerConnectionIntegrationTest, VideoRejectedInSubsequentOffer) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
{
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
// Renegotiate, rejecting the video m= section.
if (sdp_semantics_ == SdpSemantics::kPlanB) {
caller()->SetGeneratedSdpMunger(
[](cricket::SessionDescription* description) {
for (cricket::ContentInfo& content : description->contents()) {
if (cricket::IsVideoContent(&content)) {
content.rejected = true;
}
}
});
} else {
caller()->GetFirstTransceiverOfType(cricket::MEDIA_TYPE_VIDEO)->Stop();
}
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kMaxWaitForActivationMs);
// Sanity check that the caller's description has a rejected video section.
ASSERT_NE(nullptr, caller()->pc()->local_description());
const ContentInfo* caller_video_content =
GetFirstVideoContent(caller()->pc()->local_description()->description());
ASSERT_NE(nullptr, caller_video_content);
EXPECT_TRUE(caller_video_content->rejected);
// Wait for some additional audio frames to be received.
{
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudio();
media_expectations.ExpectNoVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
}
// Do one offer/answer with audio, another that disables it (rejecting the m=
// section), and another that re-enables it. Regression test for:
// bugs.webrtc.org/6023
TEST_F(PeerConnectionIntegrationTestPlanB, EnableAudioAfterRejecting) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
// Add audio track, do normal offer/answer.
rtc::scoped_refptr<webrtc::AudioTrackInterface> track =
caller()->CreateLocalAudioTrack();
rtc::scoped_refptr<webrtc::RtpSenderInterface> sender =
caller()->pc()->AddTrack(track, {"stream"}).MoveValue();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Remove audio track, and set offer_to_receive_audio to false to cause the
// m= section to be completely disabled, not just "recvonly".
caller()->pc()->RemoveTrack(sender);
PeerConnectionInterface::RTCOfferAnswerOptions options;
options.offer_to_receive_audio = 0;
caller()->SetOfferAnswerOptions(options);
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Add the audio track again, expecting negotiation to succeed and frames to
// flow.
sender = caller()->pc()->AddTrack(track, {"stream"}).MoveValue();
options.offer_to_receive_audio = 1;
caller()->SetOfferAnswerOptions(options);
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
MediaExpectations media_expectations;
media_expectations.CalleeExpectsSomeAudio();
EXPECT_TRUE(ExpectNewFrames(media_expectations));
}
// Basic end-to-end test, but without SSRC/MSID signaling. This functionality
// is needed to support legacy endpoints.
// TODO(deadbeef): When we support the MID extension and demuxing on MID, also
// add a test for an end-to-end test without MID signaling either (basically,
// the minimum acceptable SDP).
TEST_P(PeerConnectionIntegrationTest, EndToEndCallWithoutSsrcOrMsidSignaling) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
// Add audio and video, testing that packets can be demuxed on payload type.
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
// Remove SSRCs and MSIDs from the received offer SDP.
callee()->SetReceivedSdpMunger(RemoveSsrcsAndMsids);
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
// Basic end-to-end test, without SSRC signaling. This means that the track
// was created properly and frames are delivered when the MSIDs are communicated
// with a=msid lines and no a=ssrc lines.
TEST_F(PeerConnectionIntegrationTestUnifiedPlan,
EndToEndCallWithoutSsrcSignaling) {
const char kStreamId[] = "streamId";
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
// Add just audio tracks.
caller()->AddTrack(caller()->CreateLocalAudioTrack(), {kStreamId});
callee()->AddAudioTrack();
// Remove SSRCs from the received offer SDP.
callee()->SetReceivedSdpMunger(RemoveSsrcsAndKeepMsids);
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudio();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
// Tests that video flows between multiple video tracks when SSRCs are not
// signaled. This exercises the MID RTP header extension which is needed to
// demux the incoming video tracks.
TEST_F(PeerConnectionIntegrationTestUnifiedPlan,
EndToEndCallWithTwoVideoTracksAndNoSignaledSsrc) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
caller()->AddVideoTrack();
caller()->AddVideoTrack();
callee()->AddVideoTrack();
callee()->AddVideoTrack();
caller()->SetReceivedSdpMunger(&RemoveSsrcsAndKeepMsids);
callee()->SetReceivedSdpMunger(&RemoveSsrcsAndKeepMsids);
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
ASSERT_EQ(2u, caller()->pc()->GetReceivers().size());
ASSERT_EQ(2u, callee()->pc()->GetReceivers().size());
// Expect video to be received in both directions on both tracks.
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalVideo();
EXPECT_TRUE(ExpectNewFrames(media_expectations));
}
TEST_F(PeerConnectionIntegrationTestUnifiedPlan, NoStreamsMsidLinePresent) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
caller()->AddAudioTrack();
caller()->AddVideoTrack();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
auto callee_receivers = callee()->pc()->GetReceivers();
ASSERT_EQ(2u, callee_receivers.size());
EXPECT_TRUE(callee_receivers[0]->stream_ids().empty());
EXPECT_TRUE(callee_receivers[1]->stream_ids().empty());
}
TEST_F(PeerConnectionIntegrationTestUnifiedPlan, NoStreamsMsidLineMissing) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
caller()->AddAudioTrack();
caller()->AddVideoTrack();
callee()->SetReceivedSdpMunger(RemoveSsrcsAndMsids);
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
auto callee_receivers = callee()->pc()->GetReceivers();
ASSERT_EQ(2u, callee_receivers.size());
ASSERT_EQ(1u, callee_receivers[0]->stream_ids().size());
ASSERT_EQ(1u, callee_receivers[1]->stream_ids().size());
EXPECT_EQ(callee_receivers[0]->stream_ids()[0],
callee_receivers[1]->stream_ids()[0]);
EXPECT_EQ(callee_receivers[0]->streams()[0],
callee_receivers[1]->streams()[0]);
}
// Test that if two video tracks are sent (from caller to callee, in this test),
// they're transmitted correctly end-to-end.
TEST_P(PeerConnectionIntegrationTest, EndToEndCallWithTwoVideoTracks) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
// Add one audio/video stream, and one video-only stream.
caller()->AddAudioVideoTracks();
caller()->AddVideoTrack();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
ASSERT_EQ(3u, callee()->pc()->GetReceivers().size());
MediaExpectations media_expectations;
media_expectations.CalleeExpectsSomeAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
static void MakeSpecCompliantMaxBundleOffer(cricket::SessionDescription* desc) {
bool first = true;
for (cricket::ContentInfo& content : desc->contents()) {
if (first) {
first = false;
continue;
}
content.bundle_only = true;
}
first = true;
for (cricket::TransportInfo& transport : desc->transport_infos()) {
if (first) {
first = false;
continue;
}
transport.description.ice_ufrag.clear();
transport.description.ice_pwd.clear();
transport.description.connection_role = cricket::CONNECTIONROLE_NONE;
transport.description.identity_fingerprint.reset(nullptr);
}
}
// Test that if applying a true "max bundle" offer, which uses ports of 0,
// "a=bundle-only", omitting "a=fingerprint", "a=setup", "a=ice-ufrag" and
// "a=ice-pwd" for all but the audio "m=" section, negotiation still completes
// successfully and media flows.
// TODO(deadbeef): Update this test to also omit "a=rtcp-mux", once that works.
// TODO(deadbeef): Won't need this test once we start generating actual
// standards-compliant SDP.
TEST_P(PeerConnectionIntegrationTest,
EndToEndCallWithSpecCompliantMaxBundleOffer) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
// Do the equivalent of setting the port to 0, adding a=bundle-only, and
// removing a=ice-ufrag, a=ice-pwd, a=fingerprint and a=setup from all
// but the first m= section.
callee()->SetReceivedSdpMunger(MakeSpecCompliantMaxBundleOffer);
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
// Test that we can receive the audio output level from a remote audio track.
// TODO(deadbeef): Use a fake audio source and verify that the output level is
// exactly what the source on the other side was configured with.
TEST_P(PeerConnectionIntegrationTest, GetAudioOutputLevelStatsWithOldStatsApi) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
// Just add an audio track.
caller()->AddAudioTrack();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Get the audio output level stats. Note that the level is not available
// until an RTCP packet has been received.
EXPECT_TRUE_WAIT(callee()->OldGetStats()->AudioOutputLevel() > 0,
kMaxWaitForFramesMs);
}
// Test that an audio input level is reported.
// TODO(deadbeef): Use a fake audio source and verify that the input level is
// exactly what the source was configured with.
TEST_P(PeerConnectionIntegrationTest, GetAudioInputLevelStatsWithOldStatsApi) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
// Just add an audio track.
caller()->AddAudioTrack();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Get the audio input level stats. The level should be available very
// soon after the test starts.
EXPECT_TRUE_WAIT(caller()->OldGetStats()->AudioInputLevel() > 0,
kMaxWaitForStatsMs);
}
// Test that we can get incoming byte counts from both audio and video tracks.
TEST_P(PeerConnectionIntegrationTest, GetBytesReceivedStatsWithOldStatsApi) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
caller()->AddAudioVideoTracks();
// Do offer/answer, wait for the callee to receive some frames.
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
MediaExpectations media_expectations;
media_expectations.CalleeExpectsSomeAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
// Get a handle to the remote tracks created, so they can be used as GetStats
// filters.
for (const auto& receiver : callee()->pc()->GetReceivers()) {
// We received frames, so we definitely should have nonzero "received bytes"
// stats at this point.
EXPECT_GT(callee()->OldGetStatsForTrack(receiver->track())->BytesReceived(),
0);
}
}
// Test that we can get outgoing byte counts from both audio and video tracks.
TEST_P(PeerConnectionIntegrationTest, GetBytesSentStatsWithOldStatsApi) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
auto audio_track = caller()->CreateLocalAudioTrack();
auto video_track = caller()->CreateLocalVideoTrack();
caller()->AddTrack(audio_track);
caller()->AddTrack(video_track);
// Do offer/answer, wait for the callee to receive some frames.
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
MediaExpectations media_expectations;
media_expectations.CalleeExpectsSomeAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
// The callee received frames, so we definitely should have nonzero "sent
// bytes" stats at this point.
EXPECT_GT(caller()->OldGetStatsForTrack(audio_track)->BytesSent(), 0);
EXPECT_GT(caller()->OldGetStatsForTrack(video_track)->BytesSent(), 0);
}
// Test that we can get capture start ntp time.
TEST_P(PeerConnectionIntegrationTest, GetCaptureStartNtpTimeWithOldStatsApi) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
caller()->AddAudioTrack();
callee()->AddAudioTrack();
// Do offer/answer, wait for the callee to receive some frames.
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Get the remote audio track created on the receiver, so they can be used as
// GetStats filters.
auto receivers = callee()->pc()->GetReceivers();
ASSERT_EQ(1u, receivers.size());
auto remote_audio_track = receivers[0]->track();
// Get the audio output level stats. Note that the level is not available
// until an RTCP packet has been received.
EXPECT_TRUE_WAIT(
callee()->OldGetStatsForTrack(remote_audio_track)->CaptureStartNtpTime() >
0,
2 * kMaxWaitForFramesMs);
}
// Test that the track ID is associated with all local and remote SSRC stats
// using the old GetStats() and more than 1 audio and more than 1 video track.
// This is a regression test for crbug.com/906988
TEST_F(PeerConnectionIntegrationTestUnifiedPlan,
OldGetStatsAssociatesTrackIdForManyMediaSections) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
auto audio_sender_1 = caller()->AddAudioTrack();
auto video_sender_1 = caller()->AddVideoTrack();
auto audio_sender_2 = caller()->AddAudioTrack();
auto video_sender_2 = caller()->AddVideoTrack();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
MediaExpectations media_expectations;
media_expectations.CalleeExpectsSomeAudioAndVideo();
ASSERT_TRUE_WAIT(ExpectNewFrames(media_expectations), kDefaultTimeout);
std::vector<std::string> track_ids = {
audio_sender_1->track()->id(), video_sender_1->track()->id(),
audio_sender_2->track()->id(), video_sender_2->track()->id()};
auto caller_stats = caller()->OldGetStats();
EXPECT_THAT(caller_stats->TrackIds(), UnorderedElementsAreArray(track_ids));
auto callee_stats = callee()->OldGetStats();
EXPECT_THAT(callee_stats->TrackIds(), UnorderedElementsAreArray(track_ids));
}
// Test that the new GetStats() returns stats for all outgoing/incoming streams
// with the correct track IDs if there are more than one audio and more than one
// video senders/receivers.
TEST_P(PeerConnectionIntegrationTest, NewGetStatsManyAudioAndManyVideoStreams) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
auto audio_sender_1 = caller()->AddAudioTrack();
auto video_sender_1 = caller()->AddVideoTrack();
auto audio_sender_2 = caller()->AddAudioTrack();
auto video_sender_2 = caller()->AddVideoTrack();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
MediaExpectations media_expectations;
media_expectations.CalleeExpectsSomeAudioAndVideo();
ASSERT_TRUE_WAIT(ExpectNewFrames(media_expectations), kDefaultTimeout);
std::vector<std::string> track_ids = {
audio_sender_1->track()->id(), video_sender_1->track()->id(),
audio_sender_2->track()->id(), video_sender_2->track()->id()};
rtc::scoped_refptr<const webrtc::RTCStatsReport> caller_report =
caller()->NewGetStats();
ASSERT_TRUE(caller_report);
auto outbound_stream_stats =
caller_report->GetStatsOfType<webrtc::RTCOutboundRTPStreamStats>();
ASSERT_EQ(4u, outbound_stream_stats.size());
std::vector<std::string> outbound_track_ids;
for (const auto& stat : outbound_stream_stats) {
ASSERT_TRUE(stat->bytes_sent.is_defined());
EXPECT_LT(0u, *stat->bytes_sent);
if (*stat->kind == "video") {
ASSERT_TRUE(stat->key_frames_encoded.is_defined());
EXPECT_GT(*stat->key_frames_encoded, 0u);
ASSERT_TRUE(stat->frames_encoded.is_defined());
EXPECT_GE(*stat->frames_encoded, *stat->key_frames_encoded);
}
ASSERT_TRUE(stat->track_id.is_defined());
const auto* track_stat =
caller_report->GetAs<webrtc::RTCMediaStreamTrackStats>(*stat->track_id);
ASSERT_TRUE(track_stat);
outbound_track_ids.push_back(*track_stat->track_identifier);
}
EXPECT_THAT(outbound_track_ids, UnorderedElementsAreArray(track_ids));
rtc::scoped_refptr<const webrtc::RTCStatsReport> callee_report =
callee()->NewGetStats();
ASSERT_TRUE(callee_report);
auto inbound_stream_stats =
callee_report->GetStatsOfType<webrtc::RTCInboundRTPStreamStats>();
ASSERT_EQ(4u, inbound_stream_stats.size());
std::vector<std::string> inbound_track_ids;
for (const auto& stat : inbound_stream_stats) {
ASSERT_TRUE(stat->bytes_received.is_defined());
EXPECT_LT(0u, *stat->bytes_received);
if (*stat->kind == "video") {
ASSERT_TRUE(stat->key_frames_decoded.is_defined());
EXPECT_GT(*stat->key_frames_decoded, 0u);
ASSERT_TRUE(stat->frames_decoded.is_defined());
EXPECT_GE(*stat->frames_decoded, *stat->key_frames_decoded);
}
ASSERT_TRUE(stat->track_id.is_defined());
const auto* track_stat =
callee_report->GetAs<webrtc::RTCMediaStreamTrackStats>(*stat->track_id);
ASSERT_TRUE(track_stat);
inbound_track_ids.push_back(*track_stat->track_identifier);
}
EXPECT_THAT(inbound_track_ids, UnorderedElementsAreArray(track_ids));
}
// Test that we can get stats (using the new stats implementation) for
// unsignaled streams. Meaning when SSRCs/MSIDs aren't signaled explicitly in
// SDP.
TEST_P(PeerConnectionIntegrationTest,
GetStatsForUnsignaledStreamWithNewStatsApi) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
caller()->AddAudioTrack();
// Remove SSRCs and MSIDs from the received offer SDP.
callee()->SetReceivedSdpMunger(RemoveSsrcsAndMsids);
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
MediaExpectations media_expectations;
media_expectations.CalleeExpectsSomeAudio(1);
ASSERT_TRUE(ExpectNewFrames(media_expectations));
// We received a frame, so we should have nonzero "bytes received" stats for
// the unsignaled stream, if stats are working for it.
rtc::scoped_refptr<const webrtc::RTCStatsReport> report =
callee()->NewGetStats();
ASSERT_NE(nullptr, report);
auto inbound_stream_stats =
report->GetStatsOfType<webrtc::RTCInboundRTPStreamStats>();
ASSERT_EQ(1U, inbound_stream_stats.size());
ASSERT_TRUE(inbound_stream_stats[0]->bytes_received.is_defined());
ASSERT_GT(*inbound_stream_stats[0]->bytes_received, 0U);
ASSERT_TRUE(inbound_stream_stats[0]->track_id.is_defined());
}
// Same as above but for the legacy stats implementation.
TEST_P(PeerConnectionIntegrationTest,
GetStatsForUnsignaledStreamWithOldStatsApi) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
caller()->AddAudioTrack();
// Remove SSRCs and MSIDs from the received offer SDP.
callee()->SetReceivedSdpMunger(RemoveSsrcsAndMsids);
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Note that, since the old stats implementation associates SSRCs with tracks
// using SDP, when SSRCs aren't signaled in SDP these stats won't have an
// associated track ID. So we can't use the track "selector" argument.
//
// Also, we use "EXPECT_TRUE_WAIT" because the stats collector may decide to
// return cached stats if not enough time has passed since the last update.
EXPECT_TRUE_WAIT(callee()->OldGetStats()->BytesReceived() > 0,
kDefaultTimeout);
}
// Test that we can successfully get the media related stats (audio level
// etc.) for the unsignaled stream.
TEST_P(PeerConnectionIntegrationTest,
GetMediaStatsForUnsignaledStreamWithNewStatsApi) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
caller()->AddAudioVideoTracks();
// Remove SSRCs and MSIDs from the received offer SDP.
callee()->SetReceivedSdpMunger(RemoveSsrcsAndMsids);
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
MediaExpectations media_expectations;
media_expectations.CalleeExpectsSomeAudio(1);
media_expectations.CalleeExpectsSomeVideo(1);
ASSERT_TRUE(ExpectNewFrames(media_expectations));
rtc::scoped_refptr<const webrtc::RTCStatsReport> report =
callee()->NewGetStats();
ASSERT_NE(nullptr, report);
auto media_stats = report->GetStatsOfType<webrtc::RTCMediaStreamTrackStats>();
auto audio_index = FindFirstMediaStatsIndexByKind("audio", media_stats);
ASSERT_GE(audio_index, 0);
EXPECT_TRUE(media_stats[audio_index]->audio_level.is_defined());
}
// Helper for test below.
void ModifySsrcs(cricket::SessionDescription* desc) {
for (ContentInfo& content : desc->contents()) {
for (StreamParams& stream :
content.media_description()->mutable_streams()) {
for (uint32_t& ssrc : stream.ssrcs) {
ssrc = rtc::CreateRandomId();
}
}
}
}
// Test that the "RTCMediaSteamTrackStats" object is updated correctly when
// SSRCs are unsignaled, and the SSRC of the received (audio) stream changes.
// This should result in two "RTCInboundRTPStreamStats", but only one
// "RTCMediaStreamTrackStats", whose counters go up continuously rather than
// being reset to 0 once the SSRC change occurs.
//
// Regression test for this bug:
// https://bugs.chromium.org/p/webrtc/issues/detail?id=8158
//
// The bug causes the track stats to only represent one of the two streams:
// whichever one has the higher SSRC. So with this bug, there was a 50% chance
// that the track stat counters would reset to 0 when the new stream is
// received, and a 50% chance that they'll stop updating (while
// "concealed_samples" continues increasing, due to silence being generated for
// the inactive stream).
TEST_P(PeerConnectionIntegrationTest,
TrackStatsUpdatedCorrectlyWhenUnsignaledSsrcChanges) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
caller()->AddAudioTrack();
// Remove SSRCs and MSIDs from the received offer SDP, simulating an endpoint
// that doesn't signal SSRCs (from the callee's perspective).
callee()->SetReceivedSdpMunger(RemoveSsrcsAndMsids);
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Wait for 50 audio frames (500ms of audio) to be received by the callee.
{
MediaExpectations media_expectations;
media_expectations.CalleeExpectsSomeAudio(50);
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
// Some audio frames were received, so we should have nonzero "samples
// received" for the track.
rtc::scoped_refptr<const webrtc::RTCStatsReport> report =
callee()->NewGetStats();
ASSERT_NE(nullptr, report);
auto track_stats = report->GetStatsOfType<webrtc::RTCMediaStreamTrackStats>();
ASSERT_EQ(1U, track_stats.size());
ASSERT_TRUE(track_stats[0]->total_samples_received.is_defined());
ASSERT_GT(*track_stats[0]->total_samples_received, 0U);
// uint64_t prev_samples_received = *track_stats[0]->total_samples_received;
// Create a new offer and munge it to cause the caller to use a new SSRC.
caller()->SetGeneratedSdpMunger(ModifySsrcs);
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Wait for 25 more audio frames (250ms of audio) to be received, from the new
// SSRC.
{
MediaExpectations media_expectations;
media_expectations.CalleeExpectsSomeAudio(25);
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
report = callee()->NewGetStats();
ASSERT_NE(nullptr, report);
track_stats = report->GetStatsOfType<webrtc::RTCMediaStreamTrackStats>();
ASSERT_EQ(1U, track_stats.size());
ASSERT_TRUE(track_stats[0]->total_samples_received.is_defined());
// The "total samples received" stat should only be greater than it was
// before.
// TODO(deadbeef): Uncomment this assertion once the bug is completely fixed.
// Right now, the new SSRC will cause the counters to reset to 0.
// EXPECT_GT(*track_stats[0]->total_samples_received, prev_samples_received);
// Additionally, the percentage of concealed samples (samples generated to
// conceal packet loss) should be less than 50%. If it's greater, that's a
// good sign that we're seeing stats from the old stream that's no longer
// receiving packets, and is generating concealed samples of silence.
constexpr double kAcceptableConcealedSamplesPercentage = 0.50;
ASSERT_TRUE(track_stats[0]->concealed_samples.is_defined());
EXPECT_LT(*track_stats[0]->concealed_samples,
*track_stats[0]->total_samples_received *
kAcceptableConcealedSamplesPercentage);
// Also ensure that we have two "RTCInboundRTPStreamStats" as expected, as a
// sanity check that the SSRC really changed.
// TODO(deadbeef): This isn't working right now, because we're not returning
// *any* stats for the inactive stream. Uncomment when the bug is completely
// fixed.
// auto inbound_stream_stats =
// report->GetStatsOfType<webrtc::RTCInboundRTPStreamStats>();
// ASSERT_EQ(2U, inbound_stream_stats.size());
}
// Test that DTLS 1.0 is used if both sides only support DTLS 1.0.
TEST_P(PeerConnectionIntegrationTest, EndToEndCallWithDtls10) {
PeerConnectionFactory::Options dtls_10_options;
dtls_10_options.ssl_max_version = rtc::SSL_PROTOCOL_DTLS_10;
ASSERT_TRUE(CreatePeerConnectionWrappersWithOptions(dtls_10_options,
dtls_10_options));
ConnectFakeSignaling();
// Do normal offer/answer and wait for some frames to be received in each
// direction.
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
// Test getting cipher stats and UMA metrics when DTLS 1.0 is negotiated.
TEST_P(PeerConnectionIntegrationTest, Dtls10CipherStatsAndUmaMetrics) {
PeerConnectionFactory::Options dtls_10_options;
dtls_10_options.ssl_max_version = rtc::SSL_PROTOCOL_DTLS_10;
ASSERT_TRUE(CreatePeerConnectionWrappersWithOptions(dtls_10_options,
dtls_10_options));
ConnectFakeSignaling();
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(DtlsConnected(), kDefaultTimeout);
EXPECT_TRUE_WAIT(rtc::SSLStreamAdapter::IsAcceptableCipher(
caller()->OldGetStats()->DtlsCipher(), rtc::KT_DEFAULT),
kDefaultTimeout);
EXPECT_EQ_WAIT(rtc::SrtpCryptoSuiteToName(kDefaultSrtpCryptoSuite),
caller()->OldGetStats()->SrtpCipher(), kDefaultTimeout);
// TODO(bugs.webrtc.org/9456): Fix it.
EXPECT_METRIC_EQ(1, webrtc::metrics::NumEvents(
"WebRTC.PeerConnection.SrtpCryptoSuite.Audio",
kDefaultSrtpCryptoSuite));
}
// Test getting cipher stats and UMA metrics when DTLS 1.2 is negotiated.
TEST_P(PeerConnectionIntegrationTest, Dtls12CipherStatsAndUmaMetrics) {
PeerConnectionFactory::Options dtls_12_options;
dtls_12_options.ssl_max_version = rtc::SSL_PROTOCOL_DTLS_12;
ASSERT_TRUE(CreatePeerConnectionWrappersWithOptions(dtls_12_options,
dtls_12_options));
ConnectFakeSignaling();
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(DtlsConnected(), kDefaultTimeout);
EXPECT_TRUE_WAIT(rtc::SSLStreamAdapter::IsAcceptableCipher(
caller()->OldGetStats()->DtlsCipher(), rtc::KT_DEFAULT),
kDefaultTimeout);
EXPECT_EQ_WAIT(rtc::SrtpCryptoSuiteToName(kDefaultSrtpCryptoSuite),
caller()->OldGetStats()->SrtpCipher(), kDefaultTimeout);
// TODO(bugs.webrtc.org/9456): Fix it.
EXPECT_METRIC_EQ(1, webrtc::metrics::NumEvents(
"WebRTC.PeerConnection.SrtpCryptoSuite.Audio",
kDefaultSrtpCryptoSuite));
}
// Test that DTLS 1.0 can be used if the caller supports DTLS 1.2 and the
// callee only supports 1.0.
TEST_P(PeerConnectionIntegrationTest, CallerDtls12ToCalleeDtls10) {
PeerConnectionFactory::Options caller_options;
caller_options.ssl_max_version = rtc::SSL_PROTOCOL_DTLS_12;
PeerConnectionFactory::Options callee_options;
callee_options.ssl_max_version = rtc::SSL_PROTOCOL_DTLS_10;
ASSERT_TRUE(
CreatePeerConnectionWrappersWithOptions(caller_options, callee_options));
ConnectFakeSignaling();
// Do normal offer/answer and wait for some frames to be received in each
// direction.
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
// Test that DTLS 1.0 can be used if the caller only supports DTLS 1.0 and the
// callee supports 1.2.
TEST_P(PeerConnectionIntegrationTest, CallerDtls10ToCalleeDtls12) {
PeerConnectionFactory::Options caller_options;
caller_options.ssl_max_version = rtc::SSL_PROTOCOL_DTLS_10;
PeerConnectionFactory::Options callee_options;
callee_options.ssl_max_version = rtc::SSL_PROTOCOL_DTLS_12;
ASSERT_TRUE(
CreatePeerConnectionWrappersWithOptions(caller_options, callee_options));
ConnectFakeSignaling();
// Do normal offer/answer and wait for some frames to be received in each
// direction.
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
// The three tests below verify that "enable_aes128_sha1_32_crypto_cipher"
// works as expected; the cipher should only be used if enabled by both sides.
TEST_P(PeerConnectionIntegrationTest,
Aes128Sha1_32_CipherNotUsedWhenOnlyCallerSupported) {
PeerConnectionFactory::Options caller_options;
caller_options.crypto_options.srtp.enable_aes128_sha1_32_crypto_cipher = true;
PeerConnectionFactory::Options callee_options;
callee_options.crypto_options.srtp.enable_aes128_sha1_32_crypto_cipher =
false;
int expected_cipher_suite = rtc::SRTP_AES128_CM_SHA1_80;
TestNegotiatedCipherSuite(caller_options, callee_options,
expected_cipher_suite);
}
TEST_P(PeerConnectionIntegrationTest,
Aes128Sha1_32_CipherNotUsedWhenOnlyCalleeSupported) {
PeerConnectionFactory::Options caller_options;
caller_options.crypto_options.srtp.enable_aes128_sha1_32_crypto_cipher =
false;
PeerConnectionFactory::Options callee_options;
callee_options.crypto_options.srtp.enable_aes128_sha1_32_crypto_cipher = true;
int expected_cipher_suite = rtc::SRTP_AES128_CM_SHA1_80;
TestNegotiatedCipherSuite(caller_options, callee_options,
expected_cipher_suite);
}
TEST_P(PeerConnectionIntegrationTest, Aes128Sha1_32_CipherUsedWhenSupported) {
PeerConnectionFactory::Options caller_options;
caller_options.crypto_options.srtp.enable_aes128_sha1_32_crypto_cipher = true;
PeerConnectionFactory::Options callee_options;
callee_options.crypto_options.srtp.enable_aes128_sha1_32_crypto_cipher = true;
int expected_cipher_suite = rtc::SRTP_AES128_CM_SHA1_32;
TestNegotiatedCipherSuite(caller_options, callee_options,
expected_cipher_suite);
}
// Test that a non-GCM cipher is used if both sides only support non-GCM.
TEST_P(PeerConnectionIntegrationTest, NonGcmCipherUsedWhenGcmNotSupported) {
bool local_gcm_enabled = false;
bool remote_gcm_enabled = false;
bool aes_ctr_enabled = true;
int expected_cipher_suite = kDefaultSrtpCryptoSuite;
TestGcmNegotiationUsesCipherSuite(local_gcm_enabled, remote_gcm_enabled,
aes_ctr_enabled, expected_cipher_suite);
}
// Test that a GCM cipher is used if both ends support it and non-GCM is
// disabled.
TEST_P(PeerConnectionIntegrationTest, GcmCipherUsedWhenOnlyGcmSupported) {
bool local_gcm_enabled = true;
bool remote_gcm_enabled = true;
bool aes_ctr_enabled = false;
int expected_cipher_suite = kDefaultSrtpCryptoSuiteGcm;
TestGcmNegotiationUsesCipherSuite(local_gcm_enabled, remote_gcm_enabled,
aes_ctr_enabled, expected_cipher_suite);
}
// Verify that media can be transmitted end-to-end when GCM crypto suites are
// enabled. Note that the above tests, such as GcmCipherUsedWhenGcmSupported,
// only verify that a GCM cipher is negotiated, and not necessarily that SRTP
// works with it.
TEST_P(PeerConnectionIntegrationTest, EndToEndCallWithGcmCipher) {
PeerConnectionFactory::Options gcm_options;
gcm_options.crypto_options.srtp.enable_gcm_crypto_suites = true;
gcm_options.crypto_options.srtp.enable_aes128_sha1_80_crypto_cipher = false;
ASSERT_TRUE(
CreatePeerConnectionWrappersWithOptions(gcm_options, gcm_options));
ConnectFakeSignaling();
// Do normal offer/answer and wait for some frames to be received in each
// direction.
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
// This test sets up a call between two parties with audio, video and an RTP
// data channel.
TEST_P(PeerConnectionIntegrationTest, EndToEndCallWithRtpDataChannel) {
PeerConnectionInterface::RTCConfiguration rtc_config;
rtc_config.enable_rtp_data_channel = true;
rtc_config.enable_dtls_srtp = false;
ASSERT_TRUE(CreatePeerConnectionWrappersWithConfig(rtc_config, rtc_config));
ConnectFakeSignaling();
// Expect that data channel created on caller side will show up for callee as
// well.
caller()->CreateDataChannel();
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Ensure the existence of the RTP data channel didn't impede audio/video.
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
ASSERT_NE(nullptr, caller()->data_channel());
ASSERT_NE(nullptr, callee()->data_channel());
EXPECT_TRUE_WAIT(caller()->data_observer()->IsOpen(), kDefaultTimeout);
EXPECT_TRUE_WAIT(callee()->data_observer()->IsOpen(), kDefaultTimeout);
// Ensure data can be sent in both directions.
std::string data = "hello world";
SendRtpDataWithRetries(caller()->data_channel(), data, 5);
EXPECT_EQ_WAIT(data, callee()->data_observer()->last_message(),
kDefaultTimeout);
SendRtpDataWithRetries(callee()->data_channel(), data, 5);
EXPECT_EQ_WAIT(data, caller()->data_observer()->last_message(),
kDefaultTimeout);
}
// Ensure that an RTP data channel is signaled as closed for the caller when
// the callee rejects it in a subsequent offer.
TEST_P(PeerConnectionIntegrationTest,
RtpDataChannelSignaledClosedInCalleeOffer) {
// Same procedure as above test.
PeerConnectionInterface::RTCConfiguration rtc_config;
rtc_config.enable_rtp_data_channel = true;
rtc_config.enable_dtls_srtp = false;
ASSERT_TRUE(CreatePeerConnectionWrappersWithConfig(rtc_config, rtc_config));
ConnectFakeSignaling();
caller()->CreateDataChannel();
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
ASSERT_NE(nullptr, caller()->data_channel());
ASSERT_NE(nullptr, callee()->data_channel());
ASSERT_TRUE_WAIT(caller()->data_observer()->IsOpen(), kDefaultTimeout);
ASSERT_TRUE_WAIT(callee()->data_observer()->IsOpen(), kDefaultTimeout);
// Close the data channel on the callee, and do an updated offer/answer.
callee()->data_channel()->Close();
callee()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
EXPECT_FALSE(caller()->data_observer()->IsOpen());
EXPECT_FALSE(callee()->data_observer()->IsOpen());
}
// Tests that data is buffered in an RTP data channel until an observer is
// registered for it.
//
// NOTE: RTP data channels can receive data before the underlying
// transport has detected that a channel is writable and thus data can be
// received before the data channel state changes to open. That is hard to test
// but the same buffering is expected to be used in that case.
TEST_P(PeerConnectionIntegrationTest,
DataBufferedUntilRtpDataChannelObserverRegistered) {
// Use fake clock and simulated network delay so that we predictably can wait
// until an SCTP message has been delivered without "sleep()"ing.
rtc::ScopedFakeClock fake_clock;
// Some things use a time of "0" as a special value, so we need to start out
// the fake clock at a nonzero time.
// TODO(deadbeef): Fix this.
fake_clock.AdvanceTime(webrtc::TimeDelta::seconds(1));
virtual_socket_server()->set_delay_mean(5); // 5 ms per hop.
virtual_socket_server()->UpdateDelayDistribution();
PeerConnectionInterface::RTCConfiguration rtc_config;
rtc_config.enable_rtp_data_channel = true;
rtc_config.enable_dtls_srtp = false;
ASSERT_TRUE(CreatePeerConnectionWrappersWithConfig(rtc_config, rtc_config));
ConnectFakeSignaling();
caller()->CreateDataChannel();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE(caller()->data_channel() != nullptr);
ASSERT_TRUE_SIMULATED_WAIT(callee()->data_channel() != nullptr,
kDefaultTimeout, fake_clock);
ASSERT_TRUE_SIMULATED_WAIT(caller()->data_observer()->IsOpen(),
kDefaultTimeout, fake_clock);
ASSERT_EQ_SIMULATED_WAIT(DataChannelInterface::kOpen,
callee()->data_channel()->state(), kDefaultTimeout,
fake_clock);
// Unregister the observer which is normally automatically registered.
callee()->data_channel()->UnregisterObserver();
// Send data and advance fake clock until it should have been received.
std::string data = "hello world";
caller()->data_channel()->Send(DataBuffer(data));
SIMULATED_WAIT(false, 50, fake_clock);
// Attach data channel and expect data to be received immediately. Note that
// EXPECT_EQ_WAIT is used, such that the simulated clock is not advanced any
// further, but data can be received even if the callback is asynchronous.
MockDataChannelObserver new_observer(callee()->data_channel());
EXPECT_EQ_SIMULATED_WAIT(data, new_observer.last_message(), kDefaultTimeout,
fake_clock);
// Closing the PeerConnections destroys the ports before the ScopedFakeClock.
// If this is not done a DCHECK can be hit in ports.cc, because a large
// negative number is calculated for the rtt due to the global clock changing.
ClosePeerConnections();
}
// This test sets up a call between two parties with audio, video and but only
// the caller client supports RTP data channels.
TEST_P(PeerConnectionIntegrationTest, RtpDataChannelsRejectedByCallee) {
PeerConnectionInterface::RTCConfiguration rtc_config_1;
rtc_config_1.enable_rtp_data_channel = true;
// Must disable DTLS to make negotiation succeed.
rtc_config_1.enable_dtls_srtp = false;
PeerConnectionInterface::RTCConfiguration rtc_config_2;
rtc_config_2.enable_dtls_srtp = false;
rtc_config_2.enable_dtls_srtp = false;
ASSERT_TRUE(
CreatePeerConnectionWrappersWithConfig(rtc_config_1, rtc_config_2));
ConnectFakeSignaling();
caller()->CreateDataChannel();
ASSERT_TRUE(caller()->data_channel() != nullptr);
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// The caller should still have a data channel, but it should be closed, and
// one should ever have been created for the callee.
EXPECT_TRUE(caller()->data_channel() != nullptr);
EXPECT_FALSE(caller()->data_observer()->IsOpen());
EXPECT_EQ(nullptr, callee()->data_channel());
}
// This test sets up a call between two parties with audio, and video. When
// audio and video is setup and flowing, an RTP data channel is negotiated.
TEST_P(PeerConnectionIntegrationTest, AddRtpDataChannelInSubsequentOffer) {
PeerConnectionInterface::RTCConfiguration rtc_config;
rtc_config.enable_rtp_data_channel = true;
rtc_config.enable_dtls_srtp = false;
ASSERT_TRUE(CreatePeerConnectionWrappersWithConfig(rtc_config, rtc_config));
ConnectFakeSignaling();
// Do initial offer/answer with audio/video.
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Create data channel and do new offer and answer.
caller()->CreateDataChannel();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
ASSERT_NE(nullptr, caller()->data_channel());
ASSERT_NE(nullptr, callee()->data_channel());
EXPECT_TRUE_WAIT(caller()->data_observer()->IsOpen(), kDefaultTimeout);
EXPECT_TRUE_WAIT(callee()->data_observer()->IsOpen(), kDefaultTimeout);
// Ensure data can be sent in both directions.
std::string data = "hello world";
SendRtpDataWithRetries(caller()->data_channel(), data, 5);
EXPECT_EQ_WAIT(data, callee()->data_observer()->last_message(),
kDefaultTimeout);
SendRtpDataWithRetries(callee()->data_channel(), data, 5);
EXPECT_EQ_WAIT(data, caller()->data_observer()->last_message(),
kDefaultTimeout);
}
#ifdef HAVE_SCTP
// This test sets up a call between two parties with audio, video and an SCTP
// data channel.
TEST_P(PeerConnectionIntegrationTest, EndToEndCallWithSctpDataChannel) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
// Expect that data channel created on caller side will show up for callee as
// well.
caller()->CreateDataChannel();
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Ensure the existence of the SCTP data channel didn't impede audio/video.
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
// Caller data channel should already exist (it created one). Callee data
// channel may not exist yet, since negotiation happens in-band, not in SDP.
ASSERT_NE(nullptr, caller()->data_channel());
ASSERT_TRUE_WAIT(callee()->data_channel() != nullptr, kDefaultTimeout);
EXPECT_TRUE_WAIT(caller()->data_observer()->IsOpen(), kDefaultTimeout);
EXPECT_TRUE_WAIT(callee()->data_observer()->IsOpen(), kDefaultTimeout);
// Ensure data can be sent in both directions.
std::string data = "hello world";
caller()->data_channel()->Send(DataBuffer(data));
EXPECT_EQ_WAIT(data, callee()->data_observer()->last_message(),
kDefaultTimeout);
callee()->data_channel()->Send(DataBuffer(data));
EXPECT_EQ_WAIT(data, caller()->data_observer()->last_message(),
kDefaultTimeout);
}
// Ensure that when the callee closes an SCTP data channel, the closing
// procedure results in the data channel being closed for the caller as well.
TEST_P(PeerConnectionIntegrationTest, CalleeClosesSctpDataChannel) {
// Same procedure as above test.
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
caller()->CreateDataChannel();
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
ASSERT_NE(nullptr, caller()->data_channel());
ASSERT_TRUE_WAIT(callee()->data_channel() != nullptr, kDefaultTimeout);
ASSERT_TRUE_WAIT(caller()->data_observer()->IsOpen(), kDefaultTimeout);
ASSERT_TRUE_WAIT(callee()->data_observer()->IsOpen(), kDefaultTimeout);
// Close the data channel on the callee side, and wait for it to reach the
// "closed" state on both sides.
callee()->data_channel()->Close();
EXPECT_TRUE_WAIT(!caller()->data_observer()->IsOpen(), kDefaultTimeout);
EXPECT_TRUE_WAIT(!callee()->data_observer()->IsOpen(), kDefaultTimeout);
}
TEST_P(PeerConnectionIntegrationTest, SctpDataChannelConfigSentToOtherSide) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
webrtc::DataChannelInit init;
init.id = 53;
init.maxRetransmits = 52;
caller()->CreateDataChannel("data-channel", &init);
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
ASSERT_TRUE_WAIT(callee()->data_channel() != nullptr, kDefaultTimeout);
ASSERT_TRUE_WAIT(callee()->data_observer()->IsOpen(), kDefaultTimeout);
// Since "negotiated" is false, the "id" parameter should be ignored.
EXPECT_NE(init.id, callee()->data_channel()->id());
EXPECT_EQ("data-channel", callee()->data_channel()->label());
EXPECT_EQ(init.maxRetransmits, callee()->data_channel()->maxRetransmits());
EXPECT_FALSE(callee()->data_channel()->negotiated());
}
// Test usrsctp's ability to process unordered data stream, where data actually
// arrives out of order using simulated delays. Previously there have been some
// bugs in this area.
TEST_P(PeerConnectionIntegrationTest, StressTestUnorderedSctpDataChannel) {
// Introduce random network delays.
// Otherwise it's not a true "unordered" test.
virtual_socket_server()->set_delay_mean(20);
virtual_socket_server()->set_delay_stddev(5);
virtual_socket_server()->UpdateDelayDistribution();
// Normal procedure, but with unordered data channel config.
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
webrtc::DataChannelInit init;
init.ordered = false;
caller()->CreateDataChannel(&init);
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
ASSERT_NE(nullptr, caller()->data_channel());
ASSERT_TRUE_WAIT(callee()->data_channel() != nullptr, kDefaultTimeout);
ASSERT_TRUE_WAIT(caller()->data_observer()->IsOpen(), kDefaultTimeout);
ASSERT_TRUE_WAIT(callee()->data_observer()->IsOpen(), kDefaultTimeout);
static constexpr int kNumMessages = 100;
// Deliberately chosen to be larger than the MTU so messages get fragmented.
static constexpr size_t kMaxMessageSize = 4096;
// Create and send random messages.
std::vector<std::string> sent_messages;
for (int i = 0; i < kNumMessages; ++i) {
size_t length =
(rand() % kMaxMessageSize) + 1; // NOLINT (rand_r instead of rand)
std::string message;
ASSERT_TRUE(rtc::CreateRandomString(length, &message));
caller()->data_channel()->Send(DataBuffer(message));
callee()->data_channel()->Send(DataBuffer(message));
sent_messages.push_back(message);
}
// Wait for all messages to be received.
EXPECT_EQ_WAIT(rtc::checked_cast<size_t>(kNumMessages),
caller()->data_observer()->received_message_count(),
kDefaultTimeout);
EXPECT_EQ_WAIT(rtc::checked_cast<size_t>(kNumMessages),
callee()->data_observer()->received_message_count(),
kDefaultTimeout);
// Sort and compare to make sure none of the messages were corrupted.
std::vector<std::string> caller_received_messages =
caller()->data_observer()->messages();
std::vector<std::string> callee_received_messages =
callee()->data_observer()->messages();
absl::c_sort(sent_messages);
absl::c_sort(caller_received_messages);
absl::c_sort(callee_received_messages);
EXPECT_EQ(sent_messages, caller_received_messages);
EXPECT_EQ(sent_messages, callee_received_messages);
}
// This test sets up a call between two parties with audio, and video. When
// audio and video are setup and flowing, an SCTP data channel is negotiated.
TEST_P(PeerConnectionIntegrationTest, AddSctpDataChannelInSubsequentOffer) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
// Do initial offer/answer with audio/video.
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Create data channel and do new offer and answer.
caller()->CreateDataChannel();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Caller data channel should already exist (it created one). Callee data
// channel may not exist yet, since negotiation happens in-band, not in SDP.
ASSERT_NE(nullptr, caller()->data_channel());
ASSERT_TRUE_WAIT(callee()->data_channel() != nullptr, kDefaultTimeout);
EXPECT_TRUE_WAIT(caller()->data_observer()->IsOpen(), kDefaultTimeout);
EXPECT_TRUE_WAIT(callee()->data_observer()->IsOpen(), kDefaultTimeout);
// Ensure data can be sent in both directions.
std::string data = "hello world";
caller()->data_channel()->Send(DataBuffer(data));
EXPECT_EQ_WAIT(data, callee()->data_observer()->last_message(),
kDefaultTimeout);
callee()->data_channel()->Send(DataBuffer(data));
EXPECT_EQ_WAIT(data, caller()->data_observer()->last_message(),
kDefaultTimeout);
}
// Set up a connection initially just using SCTP data channels, later upgrading
// to audio/video, ensuring frames are received end-to-end. Effectively the
// inverse of the test above.
// This was broken in M57; see https://crbug.com/711243
TEST_P(PeerConnectionIntegrationTest, SctpDataChannelToAudioVideoUpgrade) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
// Do initial offer/answer with just data channel.
caller()->CreateDataChannel();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Wait until data can be sent over the data channel.
ASSERT_TRUE_WAIT(callee()->data_channel() != nullptr, kDefaultTimeout);
ASSERT_TRUE_WAIT(caller()->data_observer()->IsOpen(), kDefaultTimeout);
ASSERT_TRUE_WAIT(callee()->data_observer()->IsOpen(), kDefaultTimeout);
// Do subsequent offer/answer with two-way audio and video. Audio and video
// should end up bundled on the DTLS/ICE transport already used for data.
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
static void MakeSpecCompliantSctpOffer(cricket::SessionDescription* desc) {
cricket::SctpDataContentDescription* dcd_offer =
GetFirstSctpDataContentDescription(desc);
ASSERT_TRUE(dcd_offer);
dcd_offer->set_use_sctpmap(false);
dcd_offer->set_protocol("UDP/DTLS/SCTP");
}
// Test that the data channel works when a spec-compliant SCTP m= section is
// offered (using "a=sctp-port" instead of "a=sctpmap", and using
// "UDP/DTLS/SCTP" as the protocol).
TEST_P(PeerConnectionIntegrationTest,
DataChannelWorksWhenSpecCompliantSctpOfferReceived) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
caller()->CreateDataChannel();
caller()->SetGeneratedSdpMunger(MakeSpecCompliantSctpOffer);
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
ASSERT_TRUE_WAIT(callee()->data_channel() != nullptr, kDefaultTimeout);
EXPECT_TRUE_WAIT(caller()->data_observer()->IsOpen(), kDefaultTimeout);
EXPECT_TRUE_WAIT(callee()->data_observer()->IsOpen(), kDefaultTimeout);
// Ensure data can be sent in both directions.
std::string data = "hello world";
caller()->data_channel()->Send(DataBuffer(data));
EXPECT_EQ_WAIT(data, callee()->data_observer()->last_message(),
kDefaultTimeout);
callee()->data_channel()->Send(DataBuffer(data));
EXPECT_EQ_WAIT(data, caller()->data_observer()->last_message(),
kDefaultTimeout);
}
// Tests that the datagram transport to SCTP fallback works correctly when
// datagram transport negotiation fails.
TEST_P(PeerConnectionIntegrationTest,
DatagramTransportDataChannelFallbackToSctp) {
PeerConnectionInterface::RTCConfiguration rtc_config;
rtc_config.rtcp_mux_policy = PeerConnectionInterface::kRtcpMuxPolicyRequire;
rtc_config.bundle_policy = PeerConnectionInterface::kBundlePolicyMaxBundle;
rtc_config.use_datagram_transport_for_data_channels = true;
// Configure one endpoint to use datagram transport for data channels while
// the other does not.
ASSERT_TRUE(CreatePeerConnectionWrappersWithConfigAndMediaTransportFactory(
rtc_config, RTCConfiguration(),
loopback_media_transports()->first_factory(), nullptr));
ConnectFakeSignaling();
// The caller offers a data channel using either datagram transport or SCTP.
caller()->CreateDataChannel();
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Negotiation should fallback to SCTP, allowing the data channel to be
// established.
ASSERT_NE(nullptr, caller()->data_channel());
ASSERT_TRUE_WAIT(callee()->data_channel() != nullptr, kDefaultTimeout);
EXPECT_TRUE_WAIT(caller()->data_observer()->IsOpen(), kDefaultTimeout);
EXPECT_TRUE_WAIT(callee()->data_observer()->IsOpen(), kDefaultTimeout);
// Ensure data can be sent in both directions.
std::string data = "hello world";
caller()->data_channel()->Send(DataBuffer(data));
EXPECT_EQ_WAIT(data, callee()->data_observer()->last_message(),
kDefaultTimeout);
callee()->data_channel()->Send(DataBuffer(data));
EXPECT_EQ_WAIT(data, caller()->data_observer()->last_message(),
kDefaultTimeout);
// Ensure that failure of the datagram negotiation doesn't impede media flow.
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
// Tests that the data channel transport works correctly when datagram transport
// negotiation succeeds and does not fall back to SCTP.
TEST_P(PeerConnectionIntegrationTest,
DatagramTransportDataChannelDoesNotFallbackToSctp) {
PeerConnectionInterface::RTCConfiguration rtc_config;
rtc_config.rtcp_mux_policy = PeerConnectionInterface::kRtcpMuxPolicyRequire;
rtc_config.bundle_policy = PeerConnectionInterface::kBundlePolicyMaxBundle;
rtc_config.use_datagram_transport_for_data_channels = true;
// Configure one endpoint to use datagram transport for data channels while
// the other does not.
ASSERT_TRUE(CreatePeerConnectionWrappersWithConfigAndMediaTransportFactory(
rtc_config, rtc_config, loopback_media_transports()->first_factory(),
loopback_media_transports()->second_factory()));
ConnectFakeSignaling();
// The caller offers a data channel using either datagram transport or SCTP.
caller()->CreateDataChannel();
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Ensure that the data channel transport is ready.
loopback_media_transports()->SetState(webrtc::MediaTransportState::kWritable);
loopback_media_transports()->FlushAsyncInvokes();
// Negotiation should succeed, allowing the data channel to be established.
ASSERT_NE(nullptr, caller()->data_channel());
ASSERT_TRUE_WAIT(callee()->data_channel() != nullptr, kDefaultTimeout);
EXPECT_TRUE_WAIT(caller()->data_observer()->IsOpen(), kDefaultTimeout);
EXPECT_TRUE_WAIT(callee()->data_observer()->IsOpen(), kDefaultTimeout);
// Ensure data can be sent in both directions.
std::string data = "hello world";
caller()->data_channel()->Send(DataBuffer(data));
EXPECT_EQ_WAIT(data, callee()->data_observer()->last_message(),
kDefaultTimeout);
callee()->data_channel()->Send(DataBuffer(data));
EXPECT_EQ_WAIT(data, caller()->data_observer()->last_message(),
kDefaultTimeout);
// Ensure that failure of the datagram negotiation doesn't impede media flow.
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
TEST_P(PeerConnectionIntegrationTest,
DatagramTransportDataChannelWithMediaOnCaller) {
// Configure the caller to attempt use of datagram transport for media and
// data channels.
PeerConnectionInterface::RTCConfiguration offerer_config;
offerer_config.rtcp_mux_policy =
PeerConnectionInterface::kRtcpMuxPolicyRequire;
offerer_config.bundle_policy =
PeerConnectionInterface::kBundlePolicyMaxBundle;
offerer_config.use_datagram_transport_for_data_channels = true;
offerer_config.use_datagram_transport = true;
// Configure the callee to only use datagram transport for data channels.
PeerConnectionInterface::RTCConfiguration answerer_config;
answerer_config.rtcp_mux_policy =
PeerConnectionInterface::kRtcpMuxPolicyRequire;
answerer_config.bundle_policy =
PeerConnectionInterface::kBundlePolicyMaxBundle;
answerer_config.use_datagram_transport_for_data_channels = true;
ASSERT_TRUE(CreatePeerConnectionWrappersWithConfigAndMediaTransportFactory(
offerer_config, answerer_config,
loopback_media_transports()->first_factory(),
loopback_media_transports()->second_factory()));
ConnectFakeSignaling();
// Offer both media and data.
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateDataChannel();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Ensure that the data channel transport is ready.
loopback_media_transports()->SetState(webrtc::MediaTransportState::kWritable);
loopback_media_transports()->FlushAsyncInvokes();
ASSERT_NE(nullptr, caller()->data_channel());
ASSERT_TRUE_WAIT(callee()->data_channel() != nullptr, kDefaultTimeout);
EXPECT_TRUE_WAIT(caller()->data_observer()->IsOpen(), kDefaultTimeout);
EXPECT_TRUE_WAIT(callee()->data_observer()->IsOpen(), kDefaultTimeout);
// Both endpoints should agree to use datagram transport for data channels.
EXPECT_EQ(nullptr, caller()->pc()->GetSctpTransport());
EXPECT_EQ(nullptr, callee()->pc()->GetSctpTransport());
// Ensure data can be sent in both directions.
std::string data = "hello world";
caller()->data_channel()->Send(DataBuffer(data));
EXPECT_EQ_WAIT(data, callee()->data_observer()->last_message(),
kDefaultTimeout);
callee()->data_channel()->Send(DataBuffer(data));
EXPECT_EQ_WAIT(data, caller()->data_observer()->last_message(),
kDefaultTimeout);
// Media flow should not be impacted.
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
TEST_P(PeerConnectionIntegrationTest,
DatagramTransportMediaWithDataChannelOnCaller) {
// Configure the caller to attempt use of datagram transport for media and
// data channels.
PeerConnectionInterface::RTCConfiguration offerer_config;
offerer_config.rtcp_mux_policy =
PeerConnectionInterface::kRtcpMuxPolicyRequire;
offerer_config.bundle_policy =
PeerConnectionInterface::kBundlePolicyMaxBundle;
offerer_config.use_datagram_transport_for_data_channels = true;
offerer_config.use_datagram_transport = true;
// Configure the callee to only use datagram transport for media.
PeerConnectionInterface::RTCConfiguration answerer_config;
answerer_config.rtcp_mux_policy =
PeerConnectionInterface::kRtcpMuxPolicyRequire;
answerer_config.bundle_policy =
PeerConnectionInterface::kBundlePolicyMaxBundle;
answerer_config.use_datagram_transport = true;
ASSERT_TRUE(CreatePeerConnectionWrappersWithConfigAndMediaTransportFactory(
offerer_config, answerer_config,
loopback_media_transports()->first_factory(),
loopback_media_transports()->second_factory()));
ConnectFakeSignaling();
// Offer both media and data.
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateDataChannel();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Ensure that the data channel transport is ready.
loopback_media_transports()->SetState(webrtc::MediaTransportState::kWritable);
loopback_media_transports()->FlushAsyncInvokes();
ASSERT_NE(nullptr, caller()->data_channel());
ASSERT_TRUE_WAIT(callee()->data_channel() != nullptr, kDefaultTimeout);
EXPECT_TRUE_WAIT(caller()->data_observer()->IsOpen(), kDefaultTimeout);
EXPECT_TRUE_WAIT(callee()->data_observer()->IsOpen(), kDefaultTimeout);
// Both endpoints should agree to use SCTP for data channels.
EXPECT_NE(nullptr, caller()->pc()->GetSctpTransport());
EXPECT_NE(nullptr, callee()->pc()->GetSctpTransport());
// Ensure data can be sent in both directions.
std::string data = "hello world";
caller()->data_channel()->Send(DataBuffer(data));
EXPECT_EQ_WAIT(data, callee()->data_observer()->last_message(),
kDefaultTimeout);
callee()->data_channel()->Send(DataBuffer(data));
EXPECT_EQ_WAIT(data, caller()->data_observer()->last_message(),
kDefaultTimeout);
// Media flow should not be impacted.
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
TEST_P(PeerConnectionIntegrationTest,
DatagramTransportDataChannelWithMediaOnCallee) {
// Configure the caller to attempt use of datagram transport for data
// channels.
PeerConnectionInterface::RTCConfiguration offerer_config;
offerer_config.rtcp_mux_policy =
PeerConnectionInterface::kRtcpMuxPolicyRequire;
offerer_config.bundle_policy =
PeerConnectionInterface::kBundlePolicyMaxBundle;
offerer_config.use_datagram_transport_for_data_channels = true;
// Configure the callee to use datagram transport for data channels and media.
PeerConnectionInterface::RTCConfiguration answerer_config;
answerer_config.rtcp_mux_policy =
PeerConnectionInterface::kRtcpMuxPolicyRequire;
answerer_config.bundle_policy =
PeerConnectionInterface::kBundlePolicyMaxBundle;
answerer_config.use_datagram_transport_for_data_channels = true;
answerer_config.use_datagram_transport = true;
ASSERT_TRUE(CreatePeerConnectionWrappersWithConfigAndMediaTransportFactory(
offerer_config, answerer_config,
loopback_media_transports()->first_factory(),
loopback_media_transports()->second_factory()));
ConnectFakeSignaling();
// Offer both media and data.
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateDataChannel();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Ensure that the data channel transport is ready.
loopback_media_transports()->SetState(webrtc::MediaTransportState::kWritable);
loopback_media_transports()->FlushAsyncInvokes();
ASSERT_NE(nullptr, caller()->data_channel());
ASSERT_TRUE_WAIT(callee()->data_channel() != nullptr, kDefaultTimeout);
EXPECT_TRUE_WAIT(caller()->data_observer()->IsOpen(), kDefaultTimeout);
EXPECT_TRUE_WAIT(callee()->data_observer()->IsOpen(), kDefaultTimeout);
// Both endpoints should agree to use datagram transport for data channels.
EXPECT_EQ(nullptr, caller()->pc()->GetSctpTransport());
EXPECT_EQ(nullptr, callee()->pc()->GetSctpTransport());
// Ensure data can be sent in both directions.
std::string data = "hello world";
caller()->data_channel()->Send(DataBuffer(data));
EXPECT_EQ_WAIT(data, callee()->data_observer()->last_message(),
kDefaultTimeout);
callee()->data_channel()->Send(DataBuffer(data));
EXPECT_EQ_WAIT(data, caller()->data_observer()->last_message(),
kDefaultTimeout);
// Media flow should not be impacted.
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
TEST_P(PeerConnectionIntegrationTest,
DatagramTransportMediaWithDataChannelOnCallee) {
// Configure the caller to attempt use of datagram transport for media.
PeerConnectionInterface::RTCConfiguration offerer_config;
offerer_config.rtcp_mux_policy =
PeerConnectionInterface::kRtcpMuxPolicyRequire;
offerer_config.bundle_policy =
PeerConnectionInterface::kBundlePolicyMaxBundle;
offerer_config.use_datagram_transport = true;
// Configure the callee to only use datagram transport for media and data
// channels.
PeerConnectionInterface::RTCConfiguration answerer_config;
answerer_config.rtcp_mux_policy =
PeerConnectionInterface::kRtcpMuxPolicyRequire;
answerer_config.bundle_policy =
PeerConnectionInterface::kBundlePolicyMaxBundle;
answerer_config.use_datagram_transport = true;
answerer_config.use_datagram_transport_for_data_channels = true;
ASSERT_TRUE(CreatePeerConnectionWrappersWithConfigAndMediaTransportFactory(
offerer_config, answerer_config,
loopback_media_transports()->first_factory(),
loopback_media_transports()->second_factory()));
ConnectFakeSignaling();
// Offer both media and data.
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateDataChannel();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Ensure that the data channel transport is ready.
loopback_media_transports()->SetState(webrtc::MediaTransportState::kWritable);
loopback_media_transports()->FlushAsyncInvokes();
ASSERT_NE(nullptr, caller()->data_channel());
ASSERT_TRUE_WAIT(callee()->data_channel() != nullptr, kDefaultTimeout);
EXPECT_TRUE_WAIT(caller()->data_observer()->IsOpen(), kDefaultTimeout);
EXPECT_TRUE_WAIT(callee()->data_observer()->IsOpen(), kDefaultTimeout);
// Both endpoints should agree to use SCTP for data channels.
EXPECT_NE(nullptr, caller()->pc()->GetSctpTransport());
EXPECT_NE(nullptr, callee()->pc()->GetSctpTransport());
// Ensure data can be sent in both directions.
std::string data = "hello world";
caller()->data_channel()->Send(DataBuffer(data));
EXPECT_EQ_WAIT(data, callee()->data_observer()->last_message(),
kDefaultTimeout);
callee()->data_channel()->Send(DataBuffer(data));
EXPECT_EQ_WAIT(data, caller()->data_observer()->last_message(),
kDefaultTimeout);
// Media flow should not be impacted.
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
TEST_P(PeerConnectionIntegrationTest, DatagramTransportDataChannelAndMedia) {
// Configure the caller to use datagram transport for data channels and media.
PeerConnectionInterface::RTCConfiguration offerer_config;
offerer_config.rtcp_mux_policy =
PeerConnectionInterface::kRtcpMuxPolicyRequire;
offerer_config.bundle_policy =
PeerConnectionInterface::kBundlePolicyMaxBundle;
offerer_config.use_datagram_transport_for_data_channels = true;
offerer_config.use_datagram_transport = true;
// Configure the callee to use datagram transport for data channels and media.
PeerConnectionInterface::RTCConfiguration answerer_config;
answerer_config.rtcp_mux_policy =
PeerConnectionInterface::kRtcpMuxPolicyRequire;
answerer_config.bundle_policy =
PeerConnectionInterface::kBundlePolicyMaxBundle;
answerer_config.use_datagram_transport_for_data_channels = true;
answerer_config.use_datagram_transport = true;
ASSERT_TRUE(CreatePeerConnectionWrappersWithConfigAndMediaTransportFactory(
offerer_config, answerer_config,
loopback_media_transports()->first_factory(),
loopback_media_transports()->second_factory()));
ConnectFakeSignaling();
// Offer both media and data.
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateDataChannel();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Ensure that the data channel transport is ready.
loopback_media_transports()->SetState(webrtc::MediaTransportState::kWritable);
loopback_media_transports()->FlushAsyncInvokes();
ASSERT_NE(nullptr, caller()->data_channel());
ASSERT_TRUE_WAIT(callee()->data_channel() != nullptr, kDefaultTimeout);
EXPECT_TRUE_WAIT(caller()->data_observer()->IsOpen(), kDefaultTimeout);
EXPECT_TRUE_WAIT(callee()->data_observer()->IsOpen(), kDefaultTimeout);
// Both endpoints should agree to use datagram transport for data channels.
EXPECT_EQ(nullptr, caller()->pc()->GetSctpTransport());
EXPECT_EQ(nullptr, callee()->pc()->GetSctpTransport());
// Ensure data can be sent in both directions.
std::string data = "hello world";
caller()->data_channel()->Send(DataBuffer(data));
EXPECT_EQ_WAIT(data, callee()->data_observer()->last_message(),
kDefaultTimeout);
callee()->data_channel()->Send(DataBuffer(data));
EXPECT_EQ_WAIT(data, caller()->data_observer()->last_message(),
kDefaultTimeout);
// Media flow should not be impacted.
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
// Tests that data channels use SCTP instead of datagram transport if datagram
// transport is configured in receive-only mode on the caller.
TEST_P(PeerConnectionIntegrationTest,
DatagramTransportDataChannelReceiveOnlyOnCallerUsesSctp) {
PeerConnectionInterface::RTCConfiguration rtc_config;
rtc_config.rtcp_mux_policy = PeerConnectionInterface::kRtcpMuxPolicyRequire;
rtc_config.bundle_policy = PeerConnectionInterface::kBundlePolicyMaxBundle;
rtc_config.use_datagram_transport_for_data_channels = true;
rtc_config.use_datagram_transport_for_data_channels_receive_only = true;
ASSERT_TRUE(CreatePeerConnectionWrappersWithConfigAndMediaTransportFactory(
rtc_config, rtc_config, loopback_media_transports()->first_factory(),
loopback_media_transports()->second_factory()));
ConnectFakeSignaling();
// The caller should offer a data channel using SCTP.
caller()->CreateDataChannel();
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
ASSERT_NE(nullptr, caller()->data_channel());
ASSERT_TRUE_WAIT(callee()->data_channel() != nullptr, kDefaultTimeout);
EXPECT_TRUE_WAIT(caller()->data_observer()->IsOpen(), kDefaultTimeout);
EXPECT_TRUE_WAIT(callee()->data_observer()->IsOpen(), kDefaultTimeout);
// SCTP transports should be present, since they are in use.
EXPECT_NE(caller()->pc()->GetSctpTransport(), nullptr);
EXPECT_NE(callee()->pc()->GetSctpTransport(), nullptr);
// Ensure data can be sent in both directions.
std::string data = "hello world";
caller()->data_channel()->Send(DataBuffer(data));
EXPECT_EQ_WAIT(data, callee()->data_observer()->last_message(),
kDefaultTimeout);
callee()->data_channel()->Send(DataBuffer(data));
EXPECT_EQ_WAIT(data, caller()->data_observer()->last_message(),
kDefaultTimeout);
}
#endif // HAVE_SCTP
// Tests that a callee configured for receive-only use of datagram transport
// data channels accepts them on incoming calls.
TEST_P(PeerConnectionIntegrationTest,
DatagramTransportDataChannelReceiveOnlyOnCallee) {
PeerConnectionInterface::RTCConfiguration offerer_config;
offerer_config.rtcp_mux_policy =
PeerConnectionInterface::kRtcpMuxPolicyRequire;
offerer_config.bundle_policy =
PeerConnectionInterface::kBundlePolicyMaxBundle;
offerer_config.use_datagram_transport_for_data_channels = true;
PeerConnectionInterface::RTCConfiguration answerer_config;
answerer_config.rtcp_mux_policy =
PeerConnectionInterface::kRtcpMuxPolicyRequire;
answerer_config.bundle_policy =
PeerConnectionInterface::kBundlePolicyMaxBundle;
answerer_config.use_datagram_transport_for_data_channels = true;
answerer_config.use_datagram_transport_for_data_channels_receive_only = true;
ASSERT_TRUE(CreatePeerConnectionWrappersWithConfigAndMediaTransportFactory(
offerer_config, answerer_config,
loopback_media_transports()->first_factory(),
loopback_media_transports()->second_factory()));
ConnectFakeSignaling();
caller()->CreateDataChannel();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Ensure that the data channel transport is ready.
loopback_media_transports()->SetState(webrtc::MediaTransportState::kWritable);
loopback_media_transports()->FlushAsyncInvokes();
ASSERT_NE(nullptr, caller()->data_channel());
ASSERT_TRUE_WAIT(callee()->data_channel() != nullptr, kDefaultTimeout);
EXPECT_TRUE_WAIT(caller()->data_observer()->IsOpen(), kDefaultTimeout);
EXPECT_TRUE_WAIT(callee()->data_observer()->IsOpen(), kDefaultTimeout);
// SCTP transports should not be present, since datagram transport is used.
EXPECT_EQ(caller()->pc()->GetSctpTransport(), nullptr);
EXPECT_EQ(callee()->pc()->GetSctpTransport(), nullptr);
// Ensure data can be sent in both directions.
std::string data = "hello world";
caller()->data_channel()->Send(DataBuffer(data));
EXPECT_EQ_WAIT(data, callee()->data_observer()->last_message(),
kDefaultTimeout);
callee()->data_channel()->Send(DataBuffer(data));
EXPECT_EQ_WAIT(data, caller()->data_observer()->last_message(),
kDefaultTimeout);
}
// This test sets up a call between two parties with a datagram transport data
// channel.
TEST_P(PeerConnectionIntegrationTest, DatagramTransportDataChannelEndToEnd) {
PeerConnectionInterface::RTCConfiguration rtc_config;
rtc_config.rtcp_mux_policy = PeerConnectionInterface::kRtcpMuxPolicyRequire;
rtc_config.bundle_policy = PeerConnectionInterface::kBundlePolicyMaxBundle;
rtc_config.use_datagram_transport_for_data_channels = true;
rtc_config.enable_dtls_srtp = false;
ASSERT_TRUE(CreatePeerConnectionWrappersWithConfigAndMediaTransportFactory(
rtc_config, rtc_config, loopback_media_transports()->first_factory(),
loopback_media_transports()->second_factory()));
ConnectFakeSignaling();
// Expect that data channel created on caller side will show up for callee as
// well.
caller()->CreateDataChannel();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Ensure that the data channel transport is ready.
loopback_media_transports()->SetState(webrtc::MediaTransportState::kWritable);
loopback_media_transports()->FlushAsyncInvokes();
// Caller data channel should already exist (it created one). Callee data
// channel may not exist yet, since negotiation happens in-band, not in SDP.
ASSERT_NE(nullptr, caller()->data_channel());
ASSERT_TRUE_WAIT(callee()->data_channel() != nullptr, kDefaultTimeout);
EXPECT_TRUE_WAIT(caller()->data_observer()->IsOpen(), kDefaultTimeout);
EXPECT_TRUE_WAIT(callee()->data_observer()->IsOpen(), kDefaultTimeout);
// Ensure data can be sent in both directions.
std::string data = "hello world";
caller()->data_channel()->Send(DataBuffer(data));
EXPECT_EQ_WAIT(data, callee()->data_observer()->last_message(),
kDefaultTimeout);
callee()->data_channel()->Send(DataBuffer(data));
EXPECT_EQ_WAIT(data, caller()->data_observer()->last_message(),
kDefaultTimeout);
}
// Tests that 'zero-rtt' data channel transports (which are ready-to-send as
// soon as they're created) work correctly.
TEST_P(PeerConnectionIntegrationTest, DatagramTransportDataChannelZeroRtt) {
PeerConnectionInterface::RTCConfiguration rtc_config;
rtc_config.rtcp_mux_policy = PeerConnectionInterface::kRtcpMuxPolicyRequire;
rtc_config.bundle_policy = PeerConnectionInterface::kBundlePolicyMaxBundle;
rtc_config.use_datagram_transport_for_data_channels = true;
rtc_config.enable_dtls_srtp = false; // SDES is required for media transport.
ASSERT_TRUE(CreatePeerConnectionWrappersWithConfigAndMediaTransportFactory(
rtc_config, rtc_config, loopback_media_transports()->first_factory(),
loopback_media_transports()->second_factory()));
ConnectFakeSignaling();
// Ensure that the callee's media transport is ready-to-send immediately.
// Note that only the callee can become writable in zero RTTs. The caller
// must wait for the callee's answer.
loopback_media_transports()->SetSecondStateAfterConnect(
webrtc::MediaTransportState::kWritable);
loopback_media_transports()->FlushAsyncInvokes();
// Expect that data channel created on caller side will show up for callee as
// well.
caller()->CreateDataChannel();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
loopback_media_transports()->SetFirstState(
webrtc::MediaTransportState::kWritable);
loopback_media_transports()->FlushAsyncInvokes();
// Caller data channel should already exist (it created one). Callee data
// channel may not exist yet, since negotiation happens in-band, not in SDP.
ASSERT_NE(nullptr, caller()->data_channel());
ASSERT_TRUE_WAIT(callee()->data_channel() != nullptr, kDefaultTimeout);
EXPECT_TRUE_WAIT(caller()->data_observer()->IsOpen(), kDefaultTimeout);
EXPECT_TRUE_WAIT(callee()->data_observer()->IsOpen(), kDefaultTimeout);
// Ensure data can be sent in both directions.
std::string data = "hello world";
caller()->data_channel()->Send(DataBuffer(data));
EXPECT_EQ_WAIT(data, callee()->data_observer()->last_message(),
kDefaultTimeout);
callee()->data_channel()->Send(DataBuffer(data));
EXPECT_EQ_WAIT(data, caller()->data_observer()->last_message(),
kDefaultTimeout);
}
// Ensures that when the callee closes a datagram transport data channel, the
// closing procedure results in the data channel being closed for the caller
// as well.
TEST_P(PeerConnectionIntegrationTest,
DatagramTransportDataChannelCalleeCloses) {
PeerConnectionInterface::RTCConfiguration rtc_config;
rtc_config.use_datagram_transport_for_data_channels = true;
rtc_config.enable_dtls_srtp = false;
ASSERT_TRUE(CreatePeerConnectionWrappersWithConfigAndMediaTransportFactory(
rtc_config, rtc_config, loopback_media_transports()->first_factory(),
loopback_media_transports()->second_factory()));
ConnectFakeSignaling();
// Create a data channel on the caller and signal it to the callee.
caller()->CreateDataChannel();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Ensure that the data channel transport is ready.
loopback_media_transports()->SetState(webrtc::MediaTransportState::kWritable);
loopback_media_transports()->FlushAsyncInvokes();
// Data channels exist and open on both ends of the connection.
ASSERT_NE(nullptr, caller()->data_channel());
ASSERT_TRUE_WAIT(callee()->data_channel() != nullptr, kDefaultTimeout);
ASSERT_TRUE_WAIT(caller()->data_observer()->IsOpen(), kDefaultTimeout);
ASSERT_TRUE_WAIT(callee()->data_observer()->IsOpen(), kDefaultTimeout);
// Close the data channel on the callee side, and wait for it to reach the
// "closed" state on both sides.
callee()->data_channel()->Close();
EXPECT_TRUE_WAIT(!caller()->data_observer()->IsOpen(), kDefaultTimeout);
EXPECT_TRUE_WAIT(!callee()->data_observer()->IsOpen(), kDefaultTimeout);
}
// Tests that datagram transport data channels can do in-band negotiation.
TEST_P(PeerConnectionIntegrationTest,
DatagramTransportDataChannelConfigSentToOtherSide) {
PeerConnectionInterface::RTCConfiguration rtc_config;
rtc_config.use_datagram_transport_for_data_channels = true;
rtc_config.enable_dtls_srtp = false;
ASSERT_TRUE(CreatePeerConnectionWrappersWithConfigAndMediaTransportFactory(
rtc_config, rtc_config, loopback_media_transports()->first_factory(),
loopback_media_transports()->second_factory()));
ConnectFakeSignaling();
// Create a data channel with a non-default configuration and signal it to the
// callee.
webrtc::DataChannelInit init;
init.id = 53;
init.maxRetransmits = 52;
caller()->CreateDataChannel("data-channel", &init);
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Ensure that the data channel transport is ready.
loopback_media_transports()->SetState(webrtc::MediaTransportState::kWritable);
loopback_media_transports()->FlushAsyncInvokes();
// Ensure that the data channel exists on the callee with the correct
// configuration.
ASSERT_TRUE_WAIT(callee()->data_channel() != nullptr, kDefaultTimeout);
ASSERT_TRUE_WAIT(callee()->data_observer()->IsOpen(), kDefaultTimeout);
// Since "negotiate" is false, the "id" parameter is ignored.
EXPECT_NE(init.id, callee()->data_channel()->id());
EXPECT_EQ("data-channel", callee()->data_channel()->label());
EXPECT_EQ(init.maxRetransmits, callee()->data_channel()->maxRetransmits());
EXPECT_FALSE(callee()->data_channel()->negotiated());
}
TEST_P(PeerConnectionIntegrationTest,
DatagramTransportDataChannelRejectedWithNoFallback) {
PeerConnectionInterface::RTCConfiguration offerer_config;
offerer_config.rtcp_mux_policy =
PeerConnectionInterface::kRtcpMuxPolicyRequire;
offerer_config.bundle_policy =
PeerConnectionInterface::kBundlePolicyMaxBundle;
offerer_config.use_datagram_transport_for_data_channels = true;
// Disabling DTLS precludes a fallback to SCTP.
offerer_config.enable_dtls_srtp = false;
PeerConnectionInterface::RTCConfiguration answerer_config;
answerer_config.rtcp_mux_policy =
PeerConnectionInterface::kRtcpMuxPolicyRequire;
answerer_config.bundle_policy =
PeerConnectionInterface::kBundlePolicyMaxBundle;
// Both endpoints must disable DTLS or SetRemoteDescription will fail.
answerer_config.enable_dtls_srtp = false;
// Configure one endpoint to use datagram transport for data channels while
// the other does not.
ASSERT_TRUE(CreatePeerConnectionWrappersWithConfigAndMediaTransportFactory(
offerer_config, answerer_config,
loopback_media_transports()->first_factory(), nullptr));
ConnectFakeSignaling();
// The caller offers a data channel using either datagram transport or SCTP.
caller()->CreateDataChannel();
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Caller data channel should already exist (it created one). Callee data
// channel should not exist, since negotiation happens in-band, not in SDP.
EXPECT_NE(nullptr, caller()->data_channel());
EXPECT_EQ(nullptr, callee()->data_channel());
// The caller's data channel should close when the datagram transport is
// rejected.
EXPECT_FALSE(caller()->data_observer()->IsOpen());
// Media flow should not be impacted by the failed data channel.
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
// Test that the ICE connection and gathering states eventually reach
// "complete".
TEST_P(PeerConnectionIntegrationTest, IceStatesReachCompletion) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
// Do normal offer/answer.
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
EXPECT_EQ_WAIT(webrtc::PeerConnectionInterface::kIceGatheringComplete,
caller()->ice_gathering_state(), kMaxWaitForFramesMs);
EXPECT_EQ_WAIT(webrtc::PeerConnectionInterface::kIceGatheringComplete,
callee()->ice_gathering_state(), kMaxWaitForFramesMs);
// After the best candidate pair is selected and all candidates are signaled,
// the ICE connection state should reach "complete".
// TODO(deadbeef): Currently, the ICE "controlled" agent (the
// answerer/"callee" by default) only reaches "connected". When this is
// fixed, this test should be updated.
EXPECT_EQ_WAIT(webrtc::PeerConnectionInterface::kIceConnectionCompleted,
caller()->ice_connection_state(), kDefaultTimeout);
EXPECT_EQ_WAIT(webrtc::PeerConnectionInterface::kIceConnectionConnected,
callee()->ice_connection_state(), kDefaultTimeout);
}
constexpr int kOnlyLocalPorts = cricket::PORTALLOCATOR_DISABLE_STUN |
cricket::PORTALLOCATOR_DISABLE_RELAY |
cricket::PORTALLOCATOR_DISABLE_TCP;
// Use a mock resolver to resolve the hostname back to the original IP on both
// sides and check that the ICE connection connects.
TEST_P(PeerConnectionIntegrationTest,
IceStatesReachCompletionWithRemoteHostname) {
auto caller_resolver_factory =
std::make_unique<NiceMock<webrtc::MockAsyncResolverFactory>>();
auto callee_resolver_factory =
std::make_unique<NiceMock<webrtc::MockAsyncResolverFactory>>();
NiceMock<rtc::MockAsyncResolver> callee_async_resolver;
NiceMock<rtc::MockAsyncResolver> caller_async_resolver;
// This also verifies that the injected AsyncResolverFactory is used by
// P2PTransportChannel.
EXPECT_CALL(*caller_resolver_factory, Create())
.WillOnce(Return(&caller_async_resolver));
webrtc::PeerConnectionDependencies caller_deps(nullptr);
caller_deps.async_resolver_factory = std::move(caller_resolver_factory);
EXPECT_CALL(*callee_resolver_factory, Create())
.WillOnce(Return(&callee_async_resolver));
webrtc::PeerConnectionDependencies callee_deps(nullptr);
callee_deps.async_resolver_factory = std::move(callee_resolver_factory);
PeerConnectionInterface::RTCConfiguration config;
config.bundle_policy = PeerConnectionInterface::kBundlePolicyMaxBundle;
config.rtcp_mux_policy = PeerConnectionInterface::kRtcpMuxPolicyRequire;
ASSERT_TRUE(CreatePeerConnectionWrappersWithConfigAndDeps(
config, std::move(caller_deps), config, std::move(callee_deps)));
caller()->SetRemoteAsyncResolver(&callee_async_resolver);
callee()->SetRemoteAsyncResolver(&caller_async_resolver);
// Enable hostname candidates with mDNS names.
caller()->SetMdnsResponder(
std::make_unique<webrtc::FakeMdnsResponder>(network_thread()));
callee()->SetMdnsResponder(
std::make_unique<webrtc::FakeMdnsResponder>(network_thread()));
SetPortAllocatorFlags(kOnlyLocalPorts, kOnlyLocalPorts);
ConnectFakeSignaling();
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
EXPECT_EQ_WAIT(webrtc::PeerConnectionInterface::kIceConnectionCompleted,
caller()->ice_connection_state(), kDefaultTimeout);
EXPECT_EQ_WAIT(webrtc::PeerConnectionInterface::kIceConnectionConnected,
callee()->ice_connection_state(), kDefaultTimeout);
EXPECT_METRIC_EQ(1, webrtc::metrics::NumEvents(
"WebRTC.PeerConnection.CandidatePairType_UDP",
webrtc::kIceCandidatePairHostNameHostName));
}
// Test that firewalling the ICE connection causes the clients to identify the
// disconnected state and then removing the firewall causes them to reconnect.
class PeerConnectionIntegrationIceStatesTest
: public PeerConnectionIntegrationBaseTest,
public ::testing::WithParamInterface<
std::tuple<SdpSemantics, std::tuple<std::string, uint32_t>>> {
protected:
PeerConnectionIntegrationIceStatesTest()
: PeerConnectionIntegrationBaseTest(std::get<0>(GetParam())) {
port_allocator_flags_ = std::get<1>(std::get<1>(GetParam()));
}
void StartStunServer(const SocketAddress& server_address) {
stun_server_.reset(
cricket::TestStunServer::Create(network_thread(), server_address));
}
bool TestIPv6() {
return (port_allocator_flags_ & cricket::PORTALLOCATOR_ENABLE_IPV6);
}
void SetPortAllocatorFlags() {
PeerConnectionIntegrationBaseTest::SetPortAllocatorFlags(
port_allocator_flags_, port_allocator_flags_);
}
std::vector<SocketAddress> CallerAddresses() {
std::vector<SocketAddress> addresses;
addresses.push_back(SocketAddress("1.1.1.1", 0));
if (TestIPv6()) {
addresses.push_back(SocketAddress("1111:0:a:b:c:d:e:f", 0));
}
return addresses;
}
std::vector<SocketAddress> CalleeAddresses() {
std::vector<SocketAddress> addresses;
addresses.push_back(SocketAddress("2.2.2.2", 0));
if (TestIPv6()) {
addresses.push_back(SocketAddress("2222:0:a:b:c:d:e:f", 0));
}
return addresses;
}
void SetUpNetworkInterfaces() {
// Remove the default interfaces added by the test infrastructure.
caller()->network_manager()->RemoveInterface(kDefaultLocalAddress);
callee()->network_manager()->RemoveInterface(kDefaultLocalAddress);
// Add network addresses for test.
for (const auto& caller_address : CallerAddresses()) {
caller()->network_manager()->AddInterface(caller_address);
}
for (const auto& callee_address : CalleeAddresses()) {
callee()->network_manager()->AddInterface(callee_address);
}
}
private:
uint32_t port_allocator_flags_;
std::unique_ptr<cricket::TestStunServer> stun_server_;
};
// Tests that the PeerConnection goes through all the ICE gathering/connection
// states over the duration of the call. This includes Disconnected and Failed
// states, induced by putting a firewall between the peers and waiting for them
// to time out.
TEST_P(PeerConnectionIntegrationIceStatesTest, VerifyIceStates) {
rtc::ScopedFakeClock fake_clock;
// Some things use a time of "0" as a special value, so we need to start out
// the fake clock at a nonzero time.
fake_clock.AdvanceTime(TimeDelta::seconds(1));
const SocketAddress kStunServerAddress =
SocketAddress("99.99.99.1", cricket::STUN_SERVER_PORT);
StartStunServer(kStunServerAddress);
PeerConnectionInterface::RTCConfiguration config;
PeerConnectionInterface::IceServer ice_stun_server;
ice_stun_server.urls.push_back(
"stun:" + kStunServerAddress.HostAsURIString() + ":" +
kStunServerAddress.PortAsString());
config.servers.push_back(ice_stun_server);
ASSERT_TRUE(CreatePeerConnectionWrappersWithConfig(config, config));
ConnectFakeSignaling();
SetPortAllocatorFlags();
SetUpNetworkInterfaces();
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
// Initial state before anything happens.
ASSERT_EQ(PeerConnectionInterface::kIceGatheringNew,
caller()->ice_gathering_state());
ASSERT_EQ(PeerConnectionInterface::kIceConnectionNew,
caller()->ice_connection_state());
ASSERT_EQ(PeerConnectionInterface::kIceConnectionNew,
caller()->standardized_ice_connection_state());
// Start the call by creating the offer, setting it as the local description,
// then sending it to the peer who will respond with an answer. This happens
// asynchronously so that we can watch the states as it runs in the
// background.
caller()->CreateAndSetAndSignalOffer();
ASSERT_EQ(PeerConnectionInterface::kIceConnectionCompleted,
caller()->ice_connection_state());
ASSERT_EQ(PeerConnectionInterface::kIceConnectionCompleted,
caller()->standardized_ice_connection_state());
// Verify that the observer was notified of the intermediate transitions.
EXPECT_THAT(caller()->ice_connection_state_history(),
ElementsAre(PeerConnectionInterface::kIceConnectionChecking,
PeerConnectionInterface::kIceConnectionConnected,
PeerConnectionInterface::kIceConnectionCompleted));
EXPECT_THAT(caller()->standardized_ice_connection_state_history(),
ElementsAre(PeerConnectionInterface::kIceConnectionChecking,
PeerConnectionInterface::kIceConnectionConnected,
PeerConnectionInterface::kIceConnectionCompleted));
EXPECT_THAT(
caller()->peer_connection_state_history(),
ElementsAre(PeerConnectionInterface::PeerConnectionState::kConnecting,
PeerConnectionInterface::PeerConnectionState::kConnected));
EXPECT_THAT(caller()->ice_gathering_state_history(),
ElementsAre(PeerConnectionInterface::kIceGatheringGathering,
PeerConnectionInterface::kIceGatheringComplete));
// Block connections to/from the caller and wait for ICE to become
// disconnected.
for (const auto& caller_address : CallerAddresses()) {
firewall()->AddRule(false, rtc::FP_ANY, rtc::FD_ANY, caller_address);
}
RTC_LOG(LS_INFO) << "Firewall rules applied";
ASSERT_EQ_SIMULATED_WAIT(PeerConnectionInterface::kIceConnectionDisconnected,
caller()->ice_connection_state(), kDefaultTimeout,
fake_clock);
ASSERT_EQ_SIMULATED_WAIT(PeerConnectionInterface::kIceConnectionDisconnected,
caller()->standardized_ice_connection_state(),
kDefaultTimeout, fake_clock);
// Let ICE re-establish by removing the firewall rules.
firewall()->ClearRules();
RTC_LOG(LS_INFO) << "Firewall rules cleared";
ASSERT_EQ_SIMULATED_WAIT(PeerConnectionInterface::kIceConnectionCompleted,
caller()->ice_connection_state(), kDefaultTimeout,
fake_clock);
ASSERT_EQ_SIMULATED_WAIT(PeerConnectionInterface::kIceConnectionCompleted,
caller()->standardized_ice_connection_state(),
kDefaultTimeout, fake_clock);
// According to RFC7675, if there is no response within 30 seconds then the
// peer should consider the other side to have rejected the connection. This
// is signaled by the state transitioning to "failed".
constexpr int kConsentTimeout = 30000;
for (const auto& caller_address : CallerAddresses()) {
firewall()->AddRule(false, rtc::FP_ANY, rtc::FD_ANY, caller_address);
}
RTC_LOG(LS_INFO) << "Firewall rules applied again";
ASSERT_EQ_SIMULATED_WAIT(PeerConnectionInterface::kIceConnectionFailed,
caller()->ice_connection_state(), kConsentTimeout,
fake_clock);
ASSERT_EQ_SIMULATED_WAIT(PeerConnectionInterface::kIceConnectionFailed,
caller()->standardized_ice_connection_state(),
kConsentTimeout, fake_clock);
// We need to manually close the peerconnections before the fake clock goes
// out of scope, or we trigger a DCHECK in rtp_sender.cc when we briefly
// return to using non-faked time.
delete SetCallerPcWrapperAndReturnCurrent(nullptr);
delete SetCalleePcWrapperAndReturnCurrent(nullptr);
}
// Tests that if the connection doesn't get set up properly we eventually reach
// the "failed" iceConnectionState.
TEST_P(PeerConnectionIntegrationIceStatesTest, IceStateSetupFailure) {
rtc::ScopedFakeClock fake_clock;
// Some things use a time of "0" as a special value, so we need to start out
// the fake clock at a nonzero time.
fake_clock.AdvanceTime(TimeDelta::seconds(1));
// Block connections to/from the caller and wait for ICE to become
// disconnected.
for (const auto& caller_address : CallerAddresses()) {
firewall()->AddRule(false, rtc::FP_ANY, rtc::FD_ANY, caller_address);
}
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
SetPortAllocatorFlags();
SetUpNetworkInterfaces();
caller()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
// According to RFC7675, if there is no response within 30 seconds then the
// peer should consider the other side to have rejected the connection. This
// is signaled by the state transitioning to "failed".
constexpr int kConsentTimeout = 30000;
ASSERT_EQ_SIMULATED_WAIT(PeerConnectionInterface::kIceConnectionFailed,
caller()->standardized_ice_connection_state(),
kConsentTimeout, fake_clock);
// We need to manually close the peerconnections before the fake clock goes
// out of scope, or we trigger a DCHECK in rtp_sender.cc when we briefly
// return to using non-faked time.
delete SetCallerPcWrapperAndReturnCurrent(nullptr);
delete SetCalleePcWrapperAndReturnCurrent(nullptr);
}
// Tests that the best connection is set to the appropriate IPv4/IPv6 connection
// and that the statistics in the metric observers are updated correctly.
TEST_P(PeerConnectionIntegrationIceStatesTest, VerifyBestConnection) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
SetPortAllocatorFlags();
SetUpNetworkInterfaces();
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// TODO(bugs.webrtc.org/9456): Fix it.
const int num_best_ipv4 = webrtc::metrics::NumEvents(
"WebRTC.PeerConnection.IPMetrics", webrtc::kBestConnections_IPv4);
const int num_best_ipv6 = webrtc::metrics::NumEvents(
"WebRTC.PeerConnection.IPMetrics", webrtc::kBestConnections_IPv6);
if (TestIPv6()) {
// When IPv6 is enabled, we should prefer an IPv6 connection over an IPv4
// connection.
EXPECT_METRIC_EQ(0, num_best_ipv4);
EXPECT_METRIC_EQ(1, num_best_ipv6);
} else {
EXPECT_METRIC_EQ(1, num_best_ipv4);
EXPECT_METRIC_EQ(0, num_best_ipv6);
}
EXPECT_METRIC_EQ(0, webrtc::metrics::NumEvents(
"WebRTC.PeerConnection.CandidatePairType_UDP",
webrtc::kIceCandidatePairHostHost));
EXPECT_METRIC_EQ(1, webrtc::metrics::NumEvents(
"WebRTC.PeerConnection.CandidatePairType_UDP",
webrtc::kIceCandidatePairHostPublicHostPublic));
}
constexpr uint32_t kFlagsIPv4NoStun = cricket::PORTALLOCATOR_DISABLE_TCP |
cricket::PORTALLOCATOR_DISABLE_STUN |
cricket::PORTALLOCATOR_DISABLE_RELAY;
constexpr uint32_t kFlagsIPv6NoStun =
cricket::PORTALLOCATOR_DISABLE_TCP | cricket::PORTALLOCATOR_DISABLE_STUN |
cricket::PORTALLOCATOR_ENABLE_IPV6 | cricket::PORTALLOCATOR_DISABLE_RELAY;
constexpr uint32_t kFlagsIPv4Stun =
cricket::PORTALLOCATOR_DISABLE_TCP | cricket::PORTALLOCATOR_DISABLE_RELAY;
INSTANTIATE_TEST_SUITE_P(
PeerConnectionIntegrationTest,
PeerConnectionIntegrationIceStatesTest,
Combine(Values(SdpSemantics::kPlanB, SdpSemantics::kUnifiedPlan),
Values(std::make_pair("IPv4 no STUN", kFlagsIPv4NoStun),
std::make_pair("IPv6 no STUN", kFlagsIPv6NoStun),
std::make_pair("IPv4 with STUN", kFlagsIPv4Stun))));
// This test sets up a call between two parties with audio and video.
// During the call, the caller restarts ICE and the test verifies that
// new ICE candidates are generated and audio and video still can flow, and the
// ICE state reaches completed again.
TEST_P(PeerConnectionIntegrationTest, MediaContinuesFlowingAfterIceRestart) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
// Do normal offer/answer and wait for ICE to complete.
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
EXPECT_EQ_WAIT(webrtc::PeerConnectionInterface::kIceConnectionCompleted,
caller()->ice_connection_state(), kMaxWaitForFramesMs);
EXPECT_EQ_WAIT(webrtc::PeerConnectionInterface::kIceConnectionConnected,
callee()->ice_connection_state(), kMaxWaitForFramesMs);
// To verify that the ICE restart actually occurs, get
// ufrag/password/candidates before and after restart.
// Create an SDP string of the first audio candidate for both clients.
const webrtc::IceCandidateCollection* audio_candidates_caller =
caller()->pc()->local_description()->candidates(0);
const webrtc::IceCandidateCollection* audio_candidates_callee =
callee()->pc()->local_description()->candidates(0);
ASSERT_GT(audio_candidates_caller->count(), 0u);
ASSERT_GT(audio_candidates_callee->count(), 0u);
std::string caller_candidate_pre_restart;
ASSERT_TRUE(
audio_candidates_caller->at(0)->ToString(&caller_candidate_pre_restart));
std::string callee_candidate_pre_restart;
ASSERT_TRUE(
audio_candidates_callee->at(0)->ToString(&callee_candidate_pre_restart));
const cricket::SessionDescription* desc =
caller()->pc()->local_description()->description();
std::string caller_ufrag_pre_restart =
desc->transport_infos()[0].description.ice_ufrag;
desc = callee()->pc()->local_description()->description();
std::string callee_ufrag_pre_restart =
desc->transport_infos()[0].description.ice_ufrag;
EXPECT_EQ(caller()->ice_candidate_pair_change_history().size(), 1u);
// Have the caller initiate an ICE restart.
caller()->SetOfferAnswerOptions(IceRestartOfferAnswerOptions());
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
EXPECT_EQ_WAIT(webrtc::PeerConnectionInterface::kIceConnectionCompleted,
caller()->ice_connection_state(), kMaxWaitForFramesMs);
EXPECT_EQ_WAIT(webrtc::PeerConnectionInterface::kIceConnectionConnected,
callee()->ice_connection_state(), kMaxWaitForFramesMs);
// Grab the ufrags/candidates again.
audio_candidates_caller = caller()->pc()->local_description()->candidates(0);
audio_candidates_callee = callee()->pc()->local_description()->candidates(0);
ASSERT_GT(audio_candidates_caller->count(), 0u);
ASSERT_GT(audio_candidates_callee->count(), 0u);
std::string caller_candidate_post_restart;
ASSERT_TRUE(
audio_candidates_caller->at(0)->ToString(&caller_candidate_post_restart));
std::string callee_candidate_post_restart;
ASSERT_TRUE(
audio_candidates_callee->at(0)->ToString(&callee_candidate_post_restart));
desc = caller()->pc()->local_description()->description();
std::string caller_ufrag_post_restart =
desc->transport_infos()[0].description.ice_ufrag;
desc = callee()->pc()->local_description()->description();
std::string callee_ufrag_post_restart =
desc->transport_infos()[0].description.ice_ufrag;
// Sanity check that an ICE restart was actually negotiated in SDP.
ASSERT_NE(caller_candidate_pre_restart, caller_candidate_post_restart);
ASSERT_NE(callee_candidate_pre_restart, callee_candidate_post_restart);
ASSERT_NE(caller_ufrag_pre_restart, caller_ufrag_post_restart);
ASSERT_NE(callee_ufrag_pre_restart, callee_ufrag_post_restart);
EXPECT_GT(caller()->ice_candidate_pair_change_history().size(), 1u);
// Ensure that additional frames are received after the ICE restart.
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
// Verify that audio/video can be received end-to-end when ICE renomination is
// enabled.
TEST_P(PeerConnectionIntegrationTest, EndToEndCallWithIceRenomination) {
PeerConnectionInterface::RTCConfiguration config;
config.enable_ice_renomination = true;
ASSERT_TRUE(CreatePeerConnectionWrappersWithConfig(config, config));
ConnectFakeSignaling();
// Do normal offer/answer and wait for some frames to be received in each
// direction.
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Sanity check that ICE renomination was actually negotiated.
const cricket::SessionDescription* desc =
caller()->pc()->local_description()->description();
for (const cricket::TransportInfo& info : desc->transport_infos()) {
ASSERT_THAT(info.description.transport_options, Contains("renomination"));
}
desc = callee()->pc()->local_description()->description();
for (const cricket::TransportInfo& info : desc->transport_infos()) {
ASSERT_THAT(info.description.transport_options, Contains("renomination"));
}
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
// With a max bundle policy and RTCP muxing, adding a new media description to
// the connection should not affect ICE at all because the new media will use
// the existing connection.
TEST_P(PeerConnectionIntegrationTest,
AddMediaToConnectedBundleDoesNotRestartIce) {
PeerConnectionInterface::RTCConfiguration config;
config.bundle_policy = PeerConnectionInterface::kBundlePolicyMaxBundle;
config.rtcp_mux_policy = PeerConnectionInterface::kRtcpMuxPolicyRequire;
ASSERT_TRUE(CreatePeerConnectionWrappersWithConfig(
config, PeerConnectionInterface::RTCConfiguration()));
ConnectFakeSignaling();
caller()->AddAudioTrack();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
ASSERT_EQ_WAIT(PeerConnectionInterface::kIceConnectionCompleted,
caller()->ice_connection_state(), kDefaultTimeout);
caller()->clear_ice_connection_state_history();
caller()->AddVideoTrack();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
EXPECT_EQ(0u, caller()->ice_connection_state_history().size());
}
// This test sets up a call between two parties with audio and video. It then
// renegotiates setting the video m-line to "port 0", then later renegotiates
// again, enabling video.
TEST_P(PeerConnectionIntegrationTest,
VideoFlowsAfterMediaSectionIsRejectedAndRecycled) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
// Do initial negotiation, only sending media from the caller. Will result in
// video and audio recvonly "m=" sections.
caller()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Negotiate again, disabling the video "m=" section (the callee will set the
// port to 0 due to offer_to_receive_video = 0).
if (sdp_semantics_ == SdpSemantics::kPlanB) {
PeerConnectionInterface::RTCOfferAnswerOptions options;
options.offer_to_receive_video = 0;
callee()->SetOfferAnswerOptions(options);
} else {
callee()->SetRemoteOfferHandler([this] {
callee()->GetFirstTransceiverOfType(cricket::MEDIA_TYPE_VIDEO)->Stop();
});
}
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Sanity check that video "m=" section was actually rejected.
const ContentInfo* answer_video_content = cricket::GetFirstVideoContent(
callee()->pc()->local_description()->description());
ASSERT_NE(nullptr, answer_video_content);
ASSERT_TRUE(answer_video_content->rejected);
// Enable video and do negotiation again, making sure video is received
// end-to-end, also adding media stream to callee.
if (sdp_semantics_ == SdpSemantics::kPlanB) {
PeerConnectionInterface::RTCOfferAnswerOptions options;
options.offer_to_receive_video = 1;
callee()->SetOfferAnswerOptions(options);
} else {
// The caller's transceiver is stopped, so we need to add another track.
auto caller_transceiver =
caller()->GetFirstTransceiverOfType(cricket::MEDIA_TYPE_VIDEO);
EXPECT_TRUE(caller_transceiver->stopped());
caller()->AddVideoTrack();
}
callee()->AddVideoTrack();
callee()->SetRemoteOfferHandler(nullptr);
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Verify the caller receives frames from the newly added stream, and the
// callee receives additional frames from the re-enabled video m= section.
MediaExpectations media_expectations;
media_expectations.CalleeExpectsSomeAudio();
media_expectations.ExpectBidirectionalVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
// This tests that if we negotiate after calling CreateSender but before we
// have a track, then set a track later, frames from the newly-set track are
// received end-to-end.
TEST_F(PeerConnectionIntegrationTestPlanB,
MediaFlowsAfterEarlyWarmupWithCreateSender) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
auto caller_audio_sender =
caller()->pc()->CreateSender("audio", "caller_stream");
auto caller_video_sender =
caller()->pc()->CreateSender("video", "caller_stream");
auto callee_audio_sender =
callee()->pc()->CreateSender("audio", "callee_stream");
auto callee_video_sender =
callee()->pc()->CreateSender("video", "callee_stream");
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kMaxWaitForActivationMs);
// Wait for ICE to complete, without any tracks being set.
EXPECT_EQ_WAIT(webrtc::PeerConnectionInterface::kIceConnectionCompleted,
caller()->ice_connection_state(), kMaxWaitForFramesMs);
EXPECT_EQ_WAIT(webrtc::PeerConnectionInterface::kIceConnectionConnected,
callee()->ice_connection_state(), kMaxWaitForFramesMs);
// Now set the tracks, and expect frames to immediately start flowing.
EXPECT_TRUE(caller_audio_sender->SetTrack(caller()->CreateLocalAudioTrack()));
EXPECT_TRUE(caller_video_sender->SetTrack(caller()->CreateLocalVideoTrack()));
EXPECT_TRUE(callee_audio_sender->SetTrack(callee()->CreateLocalAudioTrack()));
EXPECT_TRUE(callee_video_sender->SetTrack(callee()->CreateLocalVideoTrack()));
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
// This tests that if we negotiate after calling AddTransceiver but before we
// have a track, then set a track later, frames from the newly-set tracks are
// received end-to-end.
TEST_F(PeerConnectionIntegrationTestUnifiedPlan,
MediaFlowsAfterEarlyWarmupWithAddTransceiver) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
auto audio_result = caller()->pc()->AddTransceiver(cricket::MEDIA_TYPE_AUDIO);
ASSERT_EQ(RTCErrorType::NONE, audio_result.error().type());
auto caller_audio_sender = audio_result.MoveValue()->sender();
auto video_result = caller()->pc()->AddTransceiver(cricket::MEDIA_TYPE_VIDEO);
ASSERT_EQ(RTCErrorType::NONE, video_result.error().type());
auto caller_video_sender = video_result.MoveValue()->sender();
callee()->SetRemoteOfferHandler([this] {
ASSERT_EQ(2u, callee()->pc()->GetTransceivers().size());
callee()->pc()->GetTransceivers()[0]->SetDirection(
RtpTransceiverDirection::kSendRecv);
callee()->pc()->GetTransceivers()[1]->SetDirection(
RtpTransceiverDirection::kSendRecv);
});
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kMaxWaitForActivationMs);
// Wait for ICE to complete, without any tracks being set.
EXPECT_EQ_WAIT(webrtc::PeerConnectionInterface::kIceConnectionCompleted,
caller()->ice_connection_state(), kMaxWaitForFramesMs);
EXPECT_EQ_WAIT(webrtc::PeerConnectionInterface::kIceConnectionConnected,
callee()->ice_connection_state(), kMaxWaitForFramesMs);
// Now set the tracks, and expect frames to immediately start flowing.
auto callee_audio_sender = callee()->pc()->GetSenders()[0];
auto callee_video_sender = callee()->pc()->GetSenders()[1];
ASSERT_TRUE(caller_audio_sender->SetTrack(caller()->CreateLocalAudioTrack()));
ASSERT_TRUE(caller_video_sender->SetTrack(caller()->CreateLocalVideoTrack()));
ASSERT_TRUE(callee_audio_sender->SetTrack(callee()->CreateLocalAudioTrack()));
ASSERT_TRUE(callee_video_sender->SetTrack(callee()->CreateLocalVideoTrack()));
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
// This test verifies that a remote video track can be added via AddStream,
// and sent end-to-end. For this particular test, it's simply echoed back
// from the caller to the callee, rather than being forwarded to a third
// PeerConnection.
TEST_F(PeerConnectionIntegrationTestPlanB, CanSendRemoteVideoTrack) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
// Just send a video track from the caller.
caller()->AddVideoTrack();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kMaxWaitForActivationMs);
ASSERT_EQ(1U, callee()->remote_streams()->count());
// Echo the stream back, and do a new offer/anwer (initiated by callee this
// time).
callee()->pc()->AddStream(callee()->remote_streams()->at(0));
callee()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kMaxWaitForActivationMs);
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
// Test that we achieve the expected end-to-end connection time, using a
// fake clock and simulated latency on the media and signaling paths.
// We use a TURN<->TURN connection because this is usually the quickest to
// set up initially, especially when we're confident the connection will work
// and can start sending media before we get a STUN response.
//
// With various optimizations enabled, here are the network delays we expect to
// be on the critical path:
// 1. 2 signaling trips: Signaling offer and offerer's TURN candidate, then
// signaling answer (with DTLS fingerprint).
// 2. 9 media hops: Rest of the DTLS handshake. 3 hops in each direction when
// using TURN<->TURN pair, and DTLS exchange is 4 packets,
// the first of which should have arrived before the answer.
TEST_P(PeerConnectionIntegrationTest, EndToEndConnectionTimeWithTurnTurnPair) {
rtc::ScopedFakeClock fake_clock;
// Some things use a time of "0" as a special value, so we need to start out
// the fake clock at a nonzero time.
// TODO(deadbeef): Fix this.
fake_clock.AdvanceTime(webrtc::TimeDelta::seconds(1));
static constexpr int media_hop_delay_ms = 50;
static constexpr int signaling_trip_delay_ms = 500;
// For explanation of these values, see comment above.
static constexpr int required_media_hops = 9;
static constexpr int required_signaling_trips = 2;
// For internal delays (such as posting an event asychronously).
static constexpr int allowed_internal_delay_ms = 20;
static constexpr int total_connection_time_ms =
media_hop_delay_ms * required_media_hops +
signaling_trip_delay_ms * required_signaling_trips +
allowed_internal_delay_ms;
static const rtc::SocketAddress turn_server_1_internal_address{"88.88.88.0",
3478};
static const rtc::SocketAddress turn_server_1_external_address{"88.88.88.1",
0};
static const rtc::SocketAddress turn_server_2_internal_address{"99.99.99.0",
3478};
static const rtc::SocketAddress turn_server_2_external_address{"99.99.99.1",
0};
cricket::TestTurnServer* turn_server_1 = CreateTurnServer(
turn_server_1_internal_address, turn_server_1_external_address);
cricket::TestTurnServer* turn_server_2 = CreateTurnServer(
turn_server_2_internal_address, turn_server_2_external_address);
// Bypass permission check on received packets so media can be sent before
// the candidate is signaled.
network_thread()->Invoke<void>(RTC_FROM_HERE, [turn_server_1] {
turn_server_1->set_enable_permission_checks(false);
});
network_thread()->Invoke<void>(RTC_FROM_HERE, [turn_server_2] {
turn_server_2->set_enable_permission_checks(false);
});
PeerConnectionInterface::RTCConfiguration client_1_config;
webrtc::PeerConnectionInterface::IceServer ice_server_1;
ice_server_1.urls.push_back("turn:88.88.88.0:3478");
ice_server_1.username = "test";
ice_server_1.password = "test";
client_1_config.servers.push_back(ice_server_1);
client_1_config.type = webrtc::PeerConnectionInterface::kRelay;
client_1_config.presume_writable_when_fully_relayed = true;
PeerConnectionInterface::RTCConfiguration client_2_config;
webrtc::PeerConnectionInterface::IceServer ice_server_2;
ice_server_2.urls.push_back("turn:99.99.99.0:3478");
ice_server_2.username = "test";
ice_server_2.password = "test";
client_2_config.servers.push_back(ice_server_2);
client_2_config.type = webrtc::PeerConnectionInterface::kRelay;
client_2_config.presume_writable_when_fully_relayed = true;
ASSERT_TRUE(
CreatePeerConnectionWrappersWithConfig(client_1_config, client_2_config));
// Set up the simulated delays.
SetSignalingDelayMs(signaling_trip_delay_ms);
ConnectFakeSignaling();
virtual_socket_server()->set_delay_mean(media_hop_delay_ms);
virtual_socket_server()->UpdateDelayDistribution();
// Set "offer to receive audio/video" without adding any tracks, so we just
// set up ICE/DTLS with no media.
PeerConnectionInterface::RTCOfferAnswerOptions options;
options.offer_to_receive_audio = 1;
options.offer_to_receive_video = 1;
caller()->SetOfferAnswerOptions(options);
caller()->CreateAndSetAndSignalOffer();
EXPECT_TRUE_SIMULATED_WAIT(DtlsConnected(), total_connection_time_ms,
fake_clock);
// Closing the PeerConnections destroys the ports before the ScopedFakeClock.
// If this is not done a DCHECK can be hit in ports.cc, because a large
// negative number is calculated for the rtt due to the global clock changing.
ClosePeerConnections();
}
// Verify that a TurnCustomizer passed in through RTCConfiguration
// is actually used by the underlying TURN candidate pair.
// Note that turnport_unittest.cc contains more detailed, lower-level tests.
TEST_P(PeerConnectionIntegrationTest, TurnCustomizerUsedForTurnConnections) {
static const rtc::SocketAddress turn_server_1_internal_address{"88.88.88.0",
3478};
static const rtc::SocketAddress turn_server_1_external_address{"88.88.88.1",
0};
static const rtc::SocketAddress turn_server_2_internal_address{"99.99.99.0",
3478};
static const rtc::SocketAddress turn_server_2_external_address{"99.99.99.1",
0};
CreateTurnServer(turn_server_1_internal_address,
turn_server_1_external_address);
CreateTurnServer(turn_server_2_internal_address,
turn_server_2_external_address);
PeerConnectionInterface::RTCConfiguration client_1_config;
webrtc::PeerConnectionInterface::IceServer ice_server_1;
ice_server_1.urls.push_back("turn:88.88.88.0:3478");
ice_server_1.username = "test";
ice_server_1.password = "test";
client_1_config.servers.push_back(ice_server_1);
client_1_config.type = webrtc::PeerConnectionInterface::kRelay;
auto* customizer1 = CreateTurnCustomizer();
client_1_config.turn_customizer = customizer1;
PeerConnectionInterface::RTCConfiguration client_2_config;
webrtc::PeerConnectionInterface::IceServer ice_server_2;
ice_server_2.urls.push_back("turn:99.99.99.0:3478");
ice_server_2.username = "test";
ice_server_2.password = "test";
client_2_config.servers.push_back(ice_server_2);
client_2_config.type = webrtc::PeerConnectionInterface::kRelay;
auto* customizer2 = CreateTurnCustomizer();
client_2_config.turn_customizer = customizer2;
ASSERT_TRUE(
CreatePeerConnectionWrappersWithConfig(client_1_config, client_2_config));
ConnectFakeSignaling();
// Set "offer to receive audio/video" without adding any tracks, so we just
// set up ICE/DTLS with no media.
PeerConnectionInterface::RTCOfferAnswerOptions options;
options.offer_to_receive_audio = 1;
options.offer_to_receive_video = 1;
caller()->SetOfferAnswerOptions(options);
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(DtlsConnected(), kDefaultTimeout);
ExpectTurnCustomizerCountersIncremented(customizer1);
ExpectTurnCustomizerCountersIncremented(customizer2);
}
// Verifies that you can use TCP instead of UDP to connect to a TURN server and
// send media between the caller and the callee.
TEST_P(PeerConnectionIntegrationTest, TCPUsedForTurnConnections) {
static const rtc::SocketAddress turn_server_internal_address{"88.88.88.0",
3478};
static const rtc::SocketAddress turn_server_external_address{"88.88.88.1", 0};
// Enable TCP for the fake turn server.
CreateTurnServer(turn_server_internal_address, turn_server_external_address,
cricket::PROTO_TCP);
webrtc::PeerConnectionInterface::IceServer ice_server;
ice_server.urls.push_back("turn:88.88.88.0:3478?transport=tcp");
ice_server.username = "test";
ice_server.password = "test";
PeerConnectionInterface::RTCConfiguration client_1_config;
client_1_config.servers.push_back(ice_server);
client_1_config.type = webrtc::PeerConnectionInterface::kRelay;
PeerConnectionInterface::RTCConfiguration client_2_config;
client_2_config.servers.push_back(ice_server);
client_2_config.type = webrtc::PeerConnectionInterface::kRelay;
ASSERT_TRUE(
CreatePeerConnectionWrappersWithConfig(client_1_config, client_2_config));
// Do normal offer/answer and wait for ICE to complete.
ConnectFakeSignaling();
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
EXPECT_EQ_WAIT(webrtc::PeerConnectionInterface::kIceConnectionConnected,
callee()->ice_connection_state(), kMaxWaitForFramesMs);
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
EXPECT_TRUE(ExpectNewFrames(media_expectations));
}
// Verify that a SSLCertificateVerifier passed in through
// PeerConnectionDependencies is actually used by the underlying SSL
// implementation to determine whether a certificate presented by the TURN
// server is accepted by the client. Note that openssladapter_unittest.cc
// contains more detailed, lower-level tests.
TEST_P(PeerConnectionIntegrationTest,
SSLCertificateVerifierUsedForTurnConnections) {
static const rtc::SocketAddress turn_server_internal_address{"88.88.88.0",
3478};
static const rtc::SocketAddress turn_server_external_address{"88.88.88.1", 0};
// Enable TCP-TLS for the fake turn server. We need to pass in 88.88.88.0 so
// that host name verification passes on the fake certificate.
CreateTurnServer(turn_server_internal_address, turn_server_external_address,
cricket::PROTO_TLS, "88.88.88.0");
webrtc::PeerConnectionInterface::IceServer ice_server;
ice_server.urls.push_back("turns:88.88.88.0:3478?transport=tcp");
ice_server.username = "test";
ice_server.password = "test";
PeerConnectionInterface::RTCConfiguration client_1_config;
client_1_config.servers.push_back(ice_server);
client_1_config.type = webrtc::PeerConnectionInterface::kRelay;
PeerConnectionInterface::RTCConfiguration client_2_config;
client_2_config.servers.push_back(ice_server);
// Setting the type to kRelay forces the connection to go through a TURN
// server.
client_2_config.type = webrtc::PeerConnectionInterface::kRelay;
// Get a copy to the pointer so we can verify calls later.
rtc::TestCertificateVerifier* client_1_cert_verifier =
new rtc::TestCertificateVerifier();
client_1_cert_verifier->verify_certificate_ = true;
rtc::TestCertificateVerifier* client_2_cert_verifier =
new rtc::TestCertificateVerifier();
client_2_cert_verifier->verify_certificate_ = true;
// Create the dependencies with the test certificate verifier.
webrtc::PeerConnectionDependencies client_1_deps(nullptr);
client_1_deps.tls_cert_verifier =
std::unique_ptr<rtc::TestCertificateVerifier>(client_1_cert_verifier);
webrtc::PeerConnectionDependencies client_2_deps(nullptr);
client_2_deps.tls_cert_verifier =
std::unique_ptr<rtc::TestCertificateVerifier>(client_2_cert_verifier);
ASSERT_TRUE(CreatePeerConnectionWrappersWithConfigAndDeps(
client_1_config, std::move(client_1_deps), client_2_config,
std::move(client_2_deps)));
ConnectFakeSignaling();
// Set "offer to receive audio/video" without adding any tracks, so we just
// set up ICE/DTLS with no media.
PeerConnectionInterface::RTCOfferAnswerOptions options;
options.offer_to_receive_audio = 1;
options.offer_to_receive_video = 1;
caller()->SetOfferAnswerOptions(options);
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(DtlsConnected(), kDefaultTimeout);
EXPECT_GT(client_1_cert_verifier->call_count_, 0u);
EXPECT_GT(client_2_cert_verifier->call_count_, 0u);
}
TEST_P(PeerConnectionIntegrationTest,
SSLCertificateVerifierFailureUsedForTurnConnectionsFailsConnection) {
static const rtc::SocketAddress turn_server_internal_address{"88.88.88.0",
3478};
static const rtc::SocketAddress turn_server_external_address{"88.88.88.1", 0};
// Enable TCP-TLS for the fake turn server. We need to pass in 88.88.88.0 so
// that host name verification passes on the fake certificate.
CreateTurnServer(turn_server_internal_address, turn_server_external_address,
cricket::PROTO_TLS, "88.88.88.0");
webrtc::PeerConnectionInterface::IceServer ice_server;
ice_server.urls.push_back("turns:88.88.88.0:3478?transport=tcp");
ice_server.username = "test";
ice_server.password = "test";
PeerConnectionInterface::RTCConfiguration client_1_config;
client_1_config.servers.push_back(ice_server);
client_1_config.type = webrtc::PeerConnectionInterface::kRelay;
PeerConnectionInterface::RTCConfiguration client_2_config;
client_2_config.servers.push_back(ice_server);
// Setting the type to kRelay forces the connection to go through a TURN
// server.
client_2_config.type = webrtc::PeerConnectionInterface::kRelay;
// Get a copy to the pointer so we can verify calls later.
rtc::TestCertificateVerifier* client_1_cert_verifier =
new rtc::TestCertificateVerifier();
client_1_cert_verifier->verify_certificate_ = false;
rtc::TestCertificateVerifier* client_2_cert_verifier =
new rtc::TestCertificateVerifier();
client_2_cert_verifier->verify_certificate_ = false;
// Create the dependencies with the test certificate verifier.
webrtc::PeerConnectionDependencies client_1_deps(nullptr);
client_1_deps.tls_cert_verifier =
std::unique_ptr<rtc::TestCertificateVerifier>(client_1_cert_verifier);
webrtc::PeerConnectionDependencies client_2_deps(nullptr);
client_2_deps.tls_cert_verifier =
std::unique_ptr<rtc::TestCertificateVerifier>(client_2_cert_verifier);
ASSERT_TRUE(CreatePeerConnectionWrappersWithConfigAndDeps(
client_1_config, std::move(client_1_deps), client_2_config,
std::move(client_2_deps)));
ConnectFakeSignaling();
// Set "offer to receive audio/video" without adding any tracks, so we just
// set up ICE/DTLS with no media.
PeerConnectionInterface::RTCOfferAnswerOptions options;
options.offer_to_receive_audio = 1;
options.offer_to_receive_video = 1;
caller()->SetOfferAnswerOptions(options);
caller()->CreateAndSetAndSignalOffer();
bool wait_res = true;
// TODO(bugs.webrtc.org/9219): When IceConnectionState is implemented
// properly, should be able to just wait for a state of "failed" instead of
// waiting a fixed 10 seconds.
WAIT_(DtlsConnected(), kDefaultTimeout, wait_res);
ASSERT_FALSE(wait_res);
EXPECT_GT(client_1_cert_verifier->call_count_, 0u);
EXPECT_GT(client_2_cert_verifier->call_count_, 0u);
}
// Test that the injected ICE transport factory is used to create ICE transports
// for WebRTC connections.
TEST_P(PeerConnectionIntegrationTest, IceTransportFactoryUsedForConnections) {
PeerConnectionInterface::RTCConfiguration default_config;
PeerConnectionDependencies dependencies(nullptr);
auto ice_transport_factory = std::make_unique<MockIceTransportFactory>();
EXPECT_CALL(*ice_transport_factory, RecordIceTransportCreated()).Times(1);
dependencies.ice_transport_factory = std::move(ice_transport_factory);
auto wrapper =
CreatePeerConnectionWrapper("Caller", nullptr, &default_config,
std::move(dependencies), nullptr, nullptr);
ASSERT_TRUE(wrapper);
wrapper->CreateDataChannel();
rtc::scoped_refptr<MockSetSessionDescriptionObserver> observer(
new rtc::RefCountedObject<MockSetSessionDescriptionObserver>());
wrapper->pc()->SetLocalDescription(observer,
wrapper->CreateOfferAndWait().release());
}
// Test that audio and video flow end-to-end when codec names don't use the
// expected casing, given that they're supposed to be case insensitive. To test
// this, all but one codec is removed from each media description, and its
// casing is changed.
//
// In the past, this has regressed and caused crashes/black video, due to the
// fact that code at some layers was doing case-insensitive comparisons and
// code at other layers was not.
TEST_P(PeerConnectionIntegrationTest, CodecNamesAreCaseInsensitive) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
// Remove all but one audio/video codec (opus and VP8), and change the
// casing of the caller's generated offer.
caller()->SetGeneratedSdpMunger([](cricket::SessionDescription* description) {
cricket::AudioContentDescription* audio =
GetFirstAudioContentDescription(description);
ASSERT_NE(nullptr, audio);
auto audio_codecs = audio->codecs();
audio_codecs.erase(std::remove_if(audio_codecs.begin(), audio_codecs.end(),
[](const cricket::AudioCodec& codec) {
return codec.name != "opus";
}),
audio_codecs.end());
ASSERT_EQ(1u, audio_codecs.size());
audio_codecs[0].name = "OpUs";
audio->set_codecs(audio_codecs);
cricket::VideoContentDescription* video =
GetFirstVideoContentDescription(description);
ASSERT_NE(nullptr, video);
auto video_codecs = video->codecs();
video_codecs.erase(std::remove_if(video_codecs.begin(), video_codecs.end(),
[](const cricket::VideoCodec& codec) {
return codec.name != "VP8";
}),
video_codecs.end());
ASSERT_EQ(1u, video_codecs.size());
video_codecs[0].name = "vP8";
video->set_codecs(video_codecs);
});
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Verify frames are still received end-to-end.
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
TEST_P(PeerConnectionIntegrationTest, GetSourcesAudio) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
caller()->AddAudioTrack();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Wait for one audio frame to be received by the callee.
MediaExpectations media_expectations;
media_expectations.CalleeExpectsSomeAudio(1);
ASSERT_TRUE(ExpectNewFrames(media_expectations));
ASSERT_EQ(callee()->pc()->GetReceivers().size(), 1u);
auto receiver = callee()->pc()->GetReceivers()[0];
ASSERT_EQ(receiver->media_type(), cricket::MEDIA_TYPE_AUDIO);
auto sources = receiver->GetSources();
ASSERT_GT(receiver->GetParameters().encodings.size(), 0u);
EXPECT_EQ(receiver->GetParameters().encodings[0].ssrc,
sources[0].source_id());
EXPECT_EQ(webrtc::RtpSourceType::SSRC, sources[0].source_type());
}
TEST_P(PeerConnectionIntegrationTest, GetSourcesVideo) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
caller()->AddVideoTrack();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Wait for one video frame to be received by the callee.
MediaExpectations media_expectations;
media_expectations.CalleeExpectsSomeVideo(1);
ASSERT_TRUE(ExpectNewFrames(media_expectations));
ASSERT_EQ(callee()->pc()->GetReceivers().size(), 1u);
auto receiver = callee()->pc()->GetReceivers()[0];
ASSERT_EQ(receiver->media_type(), cricket::MEDIA_TYPE_VIDEO);
auto sources = receiver->GetSources();
ASSERT_GT(receiver->GetParameters().encodings.size(), 0u);
ASSERT_GT(sources.size(), 0u);
EXPECT_EQ(receiver->GetParameters().encodings[0].ssrc,
sources[0].source_id());
EXPECT_EQ(webrtc::RtpSourceType::SSRC, sources[0].source_type());
}
// Test that if a track is removed and added again with a different stream ID,
// the new stream ID is successfully communicated in SDP and media continues to
// flow end-to-end.
// TODO(webrtc.bugs.org/8734): This test does not work for Unified Plan because
// it will not reuse a transceiver that has already been sending. After creating
// a new transceiver it tries to create an offer with two senders of the same
// track ids and it fails.
TEST_F(PeerConnectionIntegrationTestPlanB, RemoveAndAddTrackWithNewStreamId) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
// Add track using stream 1, do offer/answer.
rtc::scoped_refptr<webrtc::AudioTrackInterface> track =
caller()->CreateLocalAudioTrack();
rtc::scoped_refptr<webrtc::RtpSenderInterface> sender =
caller()->AddTrack(track, {"stream_1"});
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
{
MediaExpectations media_expectations;
media_expectations.CalleeExpectsSomeAudio(1);
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
// Remove the sender, and create a new one with the new stream.
caller()->pc()->RemoveTrack(sender);
sender = caller()->AddTrack(track, {"stream_2"});
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Wait for additional audio frames to be received by the callee.
{
MediaExpectations media_expectations;
media_expectations.CalleeExpectsSomeAudio();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
}
TEST_P(PeerConnectionIntegrationTest, RtcEventLogOutputWriteCalled) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
auto output = std::make_unique<testing::NiceMock<MockRtcEventLogOutput>>();
ON_CALL(*output, IsActive()).WillByDefault(::testing::Return(true));
ON_CALL(*output, Write(::testing::_)).WillByDefault(::testing::Return(true));
EXPECT_CALL(*output, Write(::testing::_)).Times(::testing::AtLeast(1));
EXPECT_TRUE(caller()->pc()->StartRtcEventLog(
std::move(output), webrtc::RtcEventLog::kImmediateOutput));
caller()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
}
// Test that if candidates are only signaled by applying full session
// descriptions (instead of using AddIceCandidate), the peers can connect to
// each other and exchange media.
TEST_P(PeerConnectionIntegrationTest, MediaFlowsWhenCandidatesSetOnlyInSdp) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
// Each side will signal the session descriptions but not candidates.
ConnectFakeSignalingForSdpOnly();
// Add audio video track and exchange the initial offer/answer with media
// information only. This will start ICE gathering on each side.
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
// Wait for all candidates to be gathered on both the caller and callee.
ASSERT_EQ_WAIT(PeerConnectionInterface::kIceGatheringComplete,
caller()->ice_gathering_state(), kDefaultTimeout);
ASSERT_EQ_WAIT(PeerConnectionInterface::kIceGatheringComplete,
callee()->ice_gathering_state(), kDefaultTimeout);
// The candidates will now be included in the session description, so
// signaling them will start the ICE connection.
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Ensure that media flows in both directions.
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
// Test that SetAudioPlayout can be used to disable audio playout from the
// start, then later enable it. This may be useful, for example, if the caller
// needs to play a local ringtone until some event occurs, after which it
// switches to playing the received audio.
TEST_P(PeerConnectionIntegrationTest, DisableAndEnableAudioPlayout) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
// Set up audio-only call where audio playout is disabled on caller's side.
caller()->pc()->SetAudioPlayout(false);
caller()->AddAudioTrack();
callee()->AddAudioTrack();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Pump messages for a second.
WAIT(false, 1000);
// Since audio playout is disabled, the caller shouldn't have received
// anything (at the playout level, at least).
EXPECT_EQ(0, caller()->audio_frames_received());
// As a sanity check, make sure the callee (for which playout isn't disabled)
// did still see frames on its audio level.
ASSERT_GT(callee()->audio_frames_received(), 0);
// Enable playout again, and ensure audio starts flowing.
caller()->pc()->SetAudioPlayout(true);
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudio();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
double GetAudioEnergyStat(PeerConnectionWrapper* pc) {
auto report = pc->NewGetStats();
auto track_stats_list =
report->GetStatsOfType<webrtc::RTCMediaStreamTrackStats>();
const webrtc::RTCMediaStreamTrackStats* remote_track_stats = nullptr;
for (const auto* track_stats : track_stats_list) {
if (track_stats->remote_source.is_defined() &&
*track_stats->remote_source) {
remote_track_stats = track_stats;
break;
}
}
if (!remote_track_stats->total_audio_energy.is_defined()) {
return 0.0;
}
return *remote_track_stats->total_audio_energy;
}
// Test that if audio playout is disabled via the SetAudioPlayout() method, then
// incoming audio is still processed and statistics are generated.
TEST_P(PeerConnectionIntegrationTest,
DisableAudioPlayoutStillGeneratesAudioStats) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
// Set up audio-only call where playout is disabled but audio-processing is
// still active.
caller()->AddAudioTrack();
callee()->AddAudioTrack();
caller()->pc()->SetAudioPlayout(false);
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Wait for the callee to receive audio stats.
EXPECT_TRUE_WAIT(GetAudioEnergyStat(caller()) > 0, kMaxWaitForFramesMs);
}
// Test that SetAudioRecording can be used to disable audio recording from the
// start, then later enable it. This may be useful, for example, if the caller
// wants to ensure that no audio resources are active before a certain state
// is reached.
TEST_P(PeerConnectionIntegrationTest, DisableAndEnableAudioRecording) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
// Set up audio-only call where audio recording is disabled on caller's side.
caller()->pc()->SetAudioRecording(false);
caller()->AddAudioTrack();
callee()->AddAudioTrack();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Pump messages for a second.
WAIT(false, 1000);
// Since caller has disabled audio recording, the callee shouldn't have
// received anything.
EXPECT_EQ(0, callee()->audio_frames_received());
// As a sanity check, make sure the caller did still see frames on its
// audio level since audio recording is enabled on the calle side.
ASSERT_GT(caller()->audio_frames_received(), 0);
// Enable audio recording again, and ensure audio starts flowing.
caller()->pc()->SetAudioRecording(true);
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudio();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
// Test that after closing PeerConnections, they stop sending any packets (ICE,
// DTLS, RTP...).
TEST_P(PeerConnectionIntegrationTest, ClosingConnectionStopsPacketFlow) {
// Set up audio/video/data, wait for some frames to be received.
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
caller()->AddAudioVideoTracks();
#ifdef HAVE_SCTP
caller()->CreateDataChannel();
#endif
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
MediaExpectations media_expectations;
media_expectations.CalleeExpectsSomeAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
// Close PeerConnections.
ClosePeerConnections();
// Pump messages for a second, and ensure no new packets end up sent.
uint32_t sent_packets_a = virtual_socket_server()->sent_packets();
WAIT(false, 1000);
uint32_t sent_packets_b = virtual_socket_server()->sent_packets();
EXPECT_EQ(sent_packets_a, sent_packets_b);
}
// Test that transport stats are generated by the RTCStatsCollector for a
// connection that only involves data channels. This is a regression test for
// crbug.com/826972.
#ifdef HAVE_SCTP
TEST_P(PeerConnectionIntegrationTest,
TransportStatsReportedForDataChannelOnlyConnection) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
caller()->CreateDataChannel();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
ASSERT_TRUE_WAIT(callee()->data_channel(), kDefaultTimeout);
auto caller_report = caller()->NewGetStats();
EXPECT_EQ(1u, caller_report->GetStatsOfType<RTCTransportStats>().size());
auto callee_report = callee()->NewGetStats();
EXPECT_EQ(1u, callee_report->GetStatsOfType<RTCTransportStats>().size());
}
#endif // HAVE_SCTP
TEST_P(PeerConnectionIntegrationTest,
IceEventsGeneratedAndLoggedInRtcEventLog) {
ASSERT_TRUE(CreatePeerConnectionWrappersWithFakeRtcEventLog());
ConnectFakeSignaling();
PeerConnectionInterface::RTCOfferAnswerOptions options;
options.offer_to_receive_audio = 1;
caller()->SetOfferAnswerOptions(options);
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(DtlsConnected(), kDefaultTimeout);
ASSERT_NE(nullptr, caller()->event_log_factory());
ASSERT_NE(nullptr, callee()->event_log_factory());
webrtc::FakeRtcEventLog* caller_event_log =
static_cast<webrtc::FakeRtcEventLog*>(
caller()->event_log_factory()->last_log_created());
webrtc::FakeRtcEventLog* callee_event_log =
static_cast<webrtc::FakeRtcEventLog*>(
callee()->event_log_factory()->last_log_created());
ASSERT_NE(nullptr, caller_event_log);
ASSERT_NE(nullptr, callee_event_log);
int caller_ice_config_count = caller_event_log->GetEventCount(
webrtc::RtcEvent::Type::IceCandidatePairConfig);
int caller_ice_event_count = caller_event_log->GetEventCount(
webrtc::RtcEvent::Type::IceCandidatePairEvent);
int callee_ice_config_count = callee_event_log->GetEventCount(
webrtc::RtcEvent::Type::IceCandidatePairConfig);
int callee_ice_event_count = callee_event_log->GetEventCount(
webrtc::RtcEvent::Type::IceCandidatePairEvent);
EXPECT_LT(0, caller_ice_config_count);
EXPECT_LT(0, caller_ice_event_count);
EXPECT_LT(0, callee_ice_config_count);
EXPECT_LT(0, callee_ice_event_count);
}
TEST_P(PeerConnectionIntegrationTest, RegatherAfterChangingIceTransportType) {
static const rtc::SocketAddress turn_server_internal_address{"88.88.88.0",
3478};
static const rtc::SocketAddress turn_server_external_address{"88.88.88.1", 0};
CreateTurnServer(turn_server_internal_address, turn_server_external_address);
webrtc::PeerConnectionInterface::IceServer ice_server;
ice_server.urls.push_back("turn:88.88.88.0:3478");
ice_server.username = "test";
ice_server.password = "test";
PeerConnectionInterface::RTCConfiguration caller_config;
caller_config.servers.push_back(ice_server);
caller_config.type = webrtc::PeerConnectionInterface::kRelay;
caller_config.continual_gathering_policy = PeerConnection::GATHER_CONTINUALLY;
caller_config.surface_ice_candidates_on_ice_transport_type_changed = true;
PeerConnectionInterface::RTCConfiguration callee_config;
callee_config.servers.push_back(ice_server);
callee_config.type = webrtc::PeerConnectionInterface::kRelay;
callee_config.continual_gathering_policy = PeerConnection::GATHER_CONTINUALLY;
callee_config.surface_ice_candidates_on_ice_transport_type_changed = true;
ASSERT_TRUE(
CreatePeerConnectionWrappersWithConfig(caller_config, callee_config));
// Do normal offer/answer and wait for ICE to complete.
ConnectFakeSignaling();
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Since we are doing continual gathering, the ICE transport does not reach
// kIceGatheringComplete (see
// P2PTransportChannel::OnCandidatesAllocationDone), and consequently not
// kIceConnectionComplete.
EXPECT_EQ_WAIT(webrtc::PeerConnectionInterface::kIceConnectionConnected,
caller()->ice_connection_state(), kDefaultTimeout);
EXPECT_EQ_WAIT(webrtc::PeerConnectionInterface::kIceConnectionConnected,
callee()->ice_connection_state(), kDefaultTimeout);
// Note that we cannot use the metric
// |WebRTC.PeerConnection.CandidatePairType_UDP| in this test since this
// metric is only populated when we reach kIceConnectionComplete in the
// current implementation.
EXPECT_EQ(cricket::RELAY_PORT_TYPE,
caller()->last_candidate_gathered().type());
EXPECT_EQ(cricket::RELAY_PORT_TYPE,
callee()->last_candidate_gathered().type());
// Loosen the caller's candidate filter.
caller_config = caller()->pc()->GetConfiguration();
caller_config.type = webrtc::PeerConnectionInterface::kAll;
caller()->pc()->SetConfiguration(caller_config);
// We should have gathered a new host candidate.
EXPECT_EQ_WAIT(cricket::LOCAL_PORT_TYPE,
caller()->last_candidate_gathered().type(), kDefaultTimeout);
// Loosen the callee's candidate filter.
callee_config = callee()->pc()->GetConfiguration();
callee_config.type = webrtc::PeerConnectionInterface::kAll;
callee()->pc()->SetConfiguration(callee_config);
EXPECT_EQ_WAIT(cricket::LOCAL_PORT_TYPE,
callee()->last_candidate_gathered().type(), kDefaultTimeout);
}
TEST_P(PeerConnectionIntegrationTest, OnIceCandidateError) {
static const rtc::SocketAddress turn_server_internal_address{"88.88.88.0",
3478};
static const rtc::SocketAddress turn_server_external_address{"88.88.88.1", 0};
CreateTurnServer(turn_server_internal_address, turn_server_external_address);
webrtc::PeerConnectionInterface::IceServer ice_server;
ice_server.urls.push_back("turn:88.88.88.0:3478");
ice_server.username = "test";
ice_server.password = "123";
PeerConnectionInterface::RTCConfiguration caller_config;
caller_config.servers.push_back(ice_server);
caller_config.type = webrtc::PeerConnectionInterface::kRelay;
caller_config.continual_gathering_policy = PeerConnection::GATHER_CONTINUALLY;
PeerConnectionInterface::RTCConfiguration callee_config;
callee_config.servers.push_back(ice_server);
callee_config.type = webrtc::PeerConnectionInterface::kRelay;
callee_config.continual_gathering_policy = PeerConnection::GATHER_CONTINUALLY;
ASSERT_TRUE(
CreatePeerConnectionWrappersWithConfig(caller_config, callee_config));
// Do normal offer/answer and wait for ICE to complete.
ConnectFakeSignaling();
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
EXPECT_EQ_WAIT(401, caller()->error_event().error_code, kDefaultTimeout);
EXPECT_EQ("Unauthorized", caller()->error_event().error_text);
EXPECT_EQ("turn:88.88.88.0:3478?transport=udp", caller()->error_event().url);
EXPECT_NE(caller()->error_event().address, "");
}
TEST_F(PeerConnectionIntegrationTestUnifiedPlan,
AudioKeepsFlowingAfterImplicitRollback) {
PeerConnectionInterface::RTCConfiguration config;
config.sdp_semantics = SdpSemantics::kUnifiedPlan;
config.enable_implicit_rollback = true;
ASSERT_TRUE(CreatePeerConnectionWrappersWithConfig(config, config));
ConnectFakeSignaling();
caller()->AddAudioTrack();
callee()->AddAudioTrack();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudio();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
SetSignalIceCandidates(false); // Workaround candidate outrace sdp.
caller()->AddVideoTrack();
callee()->AddVideoTrack();
rtc::scoped_refptr<MockSetSessionDescriptionObserver> observer(
new rtc::RefCountedObject<MockSetSessionDescriptionObserver>());
callee()->pc()->SetLocalDescription(observer,
callee()->CreateOfferAndWait().release());
EXPECT_TRUE_WAIT(observer->called(), kDefaultTimeout);
caller()->CreateAndSetAndSignalOffer(); // Implicit rollback.
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
TEST_F(PeerConnectionIntegrationTestUnifiedPlan,
ImplicitRollbackVisitsStableState) {
RTCConfiguration config;
config.sdp_semantics = SdpSemantics::kUnifiedPlan;
config.enable_implicit_rollback = true;
ASSERT_TRUE(CreatePeerConnectionWrappersWithConfig(config, config));
rtc::scoped_refptr<MockSetSessionDescriptionObserver> sld_observer(
new rtc::RefCountedObject<MockSetSessionDescriptionObserver>());
callee()->pc()->SetLocalDescription(sld_observer,
callee()->CreateOfferAndWait().release());
EXPECT_TRUE_WAIT(sld_observer->called(), kDefaultTimeout);
EXPECT_EQ(sld_observer->error(), "");
rtc::scoped_refptr<MockSetSessionDescriptionObserver> srd_observer(
new rtc::RefCountedObject<MockSetSessionDescriptionObserver>());
callee()->pc()->SetRemoteDescription(
srd_observer, caller()->CreateOfferAndWait().release());
EXPECT_TRUE_WAIT(srd_observer->called(), kDefaultTimeout);
EXPECT_EQ(srd_observer->error(), "");
EXPECT_THAT(callee()->peer_connection_signaling_state_history(),
ElementsAre(PeerConnectionInterface::kHaveLocalOffer,
PeerConnectionInterface::kStable,
PeerConnectionInterface::kHaveRemoteOffer));
}
INSTANTIATE_TEST_SUITE_P(PeerConnectionIntegrationTest,
PeerConnectionIntegrationTest,
Values(SdpSemantics::kPlanB,
SdpSemantics::kUnifiedPlan));
// Tests that verify interoperability between Plan B and Unified Plan
// PeerConnections.
class PeerConnectionIntegrationInteropTest
: public PeerConnectionIntegrationBaseTest,
public ::testing::WithParamInterface<
std::tuple<SdpSemantics, SdpSemantics>> {
protected:
// Setting the SdpSemantics for the base test to kDefault does not matter
// because we specify not to use the test semantics when creating
// PeerConnectionWrappers.
PeerConnectionIntegrationInteropTest()
: PeerConnectionIntegrationBaseTest(SdpSemantics::kPlanB),
caller_semantics_(std::get<0>(GetParam())),
callee_semantics_(std::get<1>(GetParam())) {}
bool CreatePeerConnectionWrappersWithSemantics() {
return CreatePeerConnectionWrappersWithSdpSemantics(caller_semantics_,
callee_semantics_);
}
const SdpSemantics caller_semantics_;
const SdpSemantics callee_semantics_;
};
TEST_P(PeerConnectionIntegrationInteropTest, NoMediaLocalToNoMediaRemote) {
ASSERT_TRUE(CreatePeerConnectionWrappersWithSemantics());
ConnectFakeSignaling();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
}
TEST_P(PeerConnectionIntegrationInteropTest, OneAudioLocalToNoMediaRemote) {
ASSERT_TRUE(CreatePeerConnectionWrappersWithSemantics());
ConnectFakeSignaling();
auto audio_sender = caller()->AddAudioTrack();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Verify that one audio receiver has been created on the remote and that it
// has the same track ID as the sending track.
auto receivers = callee()->pc()->GetReceivers();
ASSERT_EQ(1u, receivers.size());
EXPECT_EQ(cricket::MEDIA_TYPE_AUDIO, receivers[0]->media_type());
EXPECT_EQ(receivers[0]->track()->id(), audio_sender->track()->id());
MediaExpectations media_expectations;
media_expectations.CalleeExpectsSomeAudio();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
TEST_P(PeerConnectionIntegrationInteropTest, OneAudioOneVideoToNoMediaRemote) {
ASSERT_TRUE(CreatePeerConnectionWrappersWithSemantics());
ConnectFakeSignaling();
auto video_sender = caller()->AddVideoTrack();
auto audio_sender = caller()->AddAudioTrack();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Verify that one audio and one video receiver have been created on the
// remote and that they have the same track IDs as the sending tracks.
auto audio_receivers =
callee()->GetReceiversOfType(cricket::MEDIA_TYPE_AUDIO);
ASSERT_EQ(1u, audio_receivers.size());
EXPECT_EQ(audio_receivers[0]->track()->id(), audio_sender->track()->id());
auto video_receivers =
callee()->GetReceiversOfType(cricket::MEDIA_TYPE_VIDEO);
ASSERT_EQ(1u, video_receivers.size());
EXPECT_EQ(video_receivers[0]->track()->id(), video_sender->track()->id());
MediaExpectations media_expectations;
media_expectations.CalleeExpectsSomeAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
TEST_P(PeerConnectionIntegrationInteropTest,
OneAudioOneVideoLocalToOneAudioOneVideoRemote) {
ASSERT_TRUE(CreatePeerConnectionWrappersWithSemantics());
ConnectFakeSignaling();
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
MediaExpectations media_expectations;
media_expectations.ExpectBidirectionalAudioAndVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
TEST_P(PeerConnectionIntegrationInteropTest,
ReverseRolesOneAudioLocalToOneVideoRemote) {
ASSERT_TRUE(CreatePeerConnectionWrappersWithSemantics());
ConnectFakeSignaling();
caller()->AddAudioTrack();
callee()->AddVideoTrack();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Verify that only the audio track has been negotiated.
EXPECT_EQ(0u, caller()->GetReceiversOfType(cricket::MEDIA_TYPE_VIDEO).size());
// Might also check that the callee's NegotiationNeeded flag is set.
// Reverse roles.
callee()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
MediaExpectations media_expectations;
media_expectations.CallerExpectsSomeVideo();
media_expectations.CalleeExpectsSomeAudio();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
INSTANTIATE_TEST_SUITE_P(
PeerConnectionIntegrationTest,
PeerConnectionIntegrationInteropTest,
Values(std::make_tuple(SdpSemantics::kPlanB, SdpSemantics::kUnifiedPlan),
std::make_tuple(SdpSemantics::kUnifiedPlan, SdpSemantics::kPlanB)));
// Test that if the Unified Plan side offers two video tracks then the Plan B
// side will only see the first one and ignore the second.
TEST_F(PeerConnectionIntegrationTestPlanB, TwoVideoUnifiedPlanToNoMediaPlanB) {
ASSERT_TRUE(CreatePeerConnectionWrappersWithSdpSemantics(
SdpSemantics::kUnifiedPlan, SdpSemantics::kPlanB));
ConnectFakeSignaling();
auto first_sender = caller()->AddVideoTrack();
caller()->AddVideoTrack();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Verify that there is only one receiver and it corresponds to the first
// added track.
auto receivers = callee()->pc()->GetReceivers();
ASSERT_EQ(1u, receivers.size());
EXPECT_TRUE(receivers[0]->track()->enabled());
EXPECT_EQ(first_sender->track()->id(), receivers[0]->track()->id());
MediaExpectations media_expectations;
media_expectations.CalleeExpectsSomeVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
// Test that if the initial offer tagged BUNDLE section is rejected due to its
// associated RtpTransceiver being stopped and another transceiver is added,
// then renegotiation causes the callee to receive the new video track without
// error.
// This is a regression test for bugs.webrtc.org/9954
TEST_F(PeerConnectionIntegrationTestUnifiedPlan,
ReOfferWithStoppedBundleTaggedTransceiver) {
RTCConfiguration config;
config.bundle_policy = PeerConnectionInterface::kBundlePolicyMaxBundle;
ASSERT_TRUE(CreatePeerConnectionWrappersWithConfig(config, config));
ConnectFakeSignaling();
auto audio_transceiver_or_error =
caller()->pc()->AddTransceiver(caller()->CreateLocalAudioTrack());
ASSERT_TRUE(audio_transceiver_or_error.ok());
auto audio_transceiver = audio_transceiver_or_error.MoveValue();
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
{
MediaExpectations media_expectations;
media_expectations.CalleeExpectsSomeAudio();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
audio_transceiver->Stop();
caller()->pc()->AddTransceiver(caller()->CreateLocalVideoTrack());
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
{
MediaExpectations media_expectations;
media_expectations.CalleeExpectsSomeVideo();
ASSERT_TRUE(ExpectNewFrames(media_expectations));
}
}
#ifdef HAVE_SCTP
TEST_F(PeerConnectionIntegrationTestUnifiedPlan,
EndToEndCallWithBundledSctpDataChannel) {
ASSERT_TRUE(CreatePeerConnectionWrappers());
ConnectFakeSignaling();
caller()->CreateDataChannel();
caller()->AddAudioVideoTracks();
callee()->AddAudioVideoTracks();
caller()->SetGeneratedSdpMunger(MakeSpecCompliantSctpOffer);
caller()->CreateAndSetAndSignalOffer();
ASSERT_TRUE_WAIT(SignalingStateStable(), kDefaultTimeout);
// Ensure that media and data are multiplexed on the same DTLS transport.
// This only works on Unified Plan, because transports are not exposed in plan
// B.
auto sctp_info = caller()->pc()->GetSctpTransport()->Information();
EXPECT_EQ(sctp_info.dtls_transport(),
caller()->pc()->GetSenders()[0]->dtls_transport());
}
#endif // HAVE_SCTP
} // namespace
} // namespace webrtc
#endif // if !defined(THREAD_SANITIZER)