Steve Anton | 8d3444d | 2017-10-20 15:30:51 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2017 The WebRTC project authors. All Rights Reserved. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license |
| 5 | * that can be found in the LICENSE file in the root of the source |
| 6 | * tree. An additional intellectual property rights grant can be found |
| 7 | * in the file PATENTS. All contributing project authors may |
| 8 | * be found in the AUTHORS file in the root of the source tree. |
| 9 | */ |
| 10 | |
| 11 | // This file contains tests that check the interaction between the |
| 12 | // PeerConnection and the underlying media engine, as well as tests that check |
| 13 | // the media-related aspects of SDP. |
| 14 | |
| 15 | #include <tuple> |
| 16 | |
| 17 | #include "call/callfactoryinterface.h" |
| 18 | #include "logging/rtc_event_log/rtc_event_log_factory.h" |
| 19 | #include "media/base/fakemediaengine.h" |
| 20 | #include "p2p/base/fakeportallocator.h" |
| 21 | #include "pc/mediasession.h" |
| 22 | #include "pc/peerconnectionwrapper.h" |
Steve Anton | 1d03a75 | 2017-11-27 14:30:09 -0800 | [diff] [blame] | 23 | #include "pc/rtpmediautils.h" |
Steve Anton | 8d3444d | 2017-10-20 15:30:51 -0700 | [diff] [blame] | 24 | #include "pc/sdputils.h" |
| 25 | #ifdef WEBRTC_ANDROID |
| 26 | #include "pc/test/androidtestinitializer.h" |
| 27 | #endif |
| 28 | #include "pc/test/fakertccertificategenerator.h" |
| 29 | #include "rtc_base/gunit.h" |
| 30 | #include "rtc_base/ptr_util.h" |
| 31 | #include "rtc_base/virtualsocketserver.h" |
| 32 | #include "test/gmock.h" |
| 33 | |
| 34 | namespace webrtc { |
| 35 | |
| 36 | using cricket::FakeMediaEngine; |
| 37 | using RTCConfiguration = PeerConnectionInterface::RTCConfiguration; |
| 38 | using RTCOfferAnswerOptions = PeerConnectionInterface::RTCOfferAnswerOptions; |
| 39 | using ::testing::Bool; |
| 40 | using ::testing::Combine; |
| 41 | using ::testing::Values; |
| 42 | using ::testing::ElementsAre; |
| 43 | |
| 44 | class PeerConnectionWrapperForMediaTest : public PeerConnectionWrapper { |
| 45 | public: |
| 46 | using PeerConnectionWrapper::PeerConnectionWrapper; |
| 47 | |
| 48 | FakeMediaEngine* media_engine() { return media_engine_; } |
| 49 | void set_media_engine(FakeMediaEngine* media_engine) { |
| 50 | media_engine_ = media_engine; |
| 51 | } |
| 52 | |
| 53 | private: |
| 54 | FakeMediaEngine* media_engine_; |
| 55 | }; |
| 56 | |
| 57 | class PeerConnectionMediaTest : public ::testing::Test { |
| 58 | protected: |
| 59 | typedef std::unique_ptr<PeerConnectionWrapperForMediaTest> WrapperPtr; |
| 60 | |
| 61 | PeerConnectionMediaTest() |
| 62 | : vss_(new rtc::VirtualSocketServer()), main_(vss_.get()) { |
| 63 | #ifdef WEBRTC_ANDROID |
| 64 | InitializeAndroidObjects(); |
| 65 | #endif |
| 66 | } |
| 67 | |
| 68 | WrapperPtr CreatePeerConnection() { |
| 69 | return CreatePeerConnection(RTCConfiguration()); |
| 70 | } |
| 71 | |
| 72 | WrapperPtr CreatePeerConnection(const RTCConfiguration& config) { |
| 73 | auto media_engine = rtc::MakeUnique<FakeMediaEngine>(); |
| 74 | auto* media_engine_ptr = media_engine.get(); |
| 75 | auto pc_factory = CreateModularPeerConnectionFactory( |
| 76 | rtc::Thread::Current(), rtc::Thread::Current(), rtc::Thread::Current(), |
| 77 | std::move(media_engine), CreateCallFactory(), |
| 78 | CreateRtcEventLogFactory()); |
| 79 | |
| 80 | auto fake_port_allocator = rtc::MakeUnique<cricket::FakePortAllocator>( |
| 81 | rtc::Thread::Current(), nullptr); |
| 82 | auto observer = rtc::MakeUnique<MockPeerConnectionObserver>(); |
| 83 | auto pc = pc_factory->CreatePeerConnection( |
| 84 | config, std::move(fake_port_allocator), nullptr, observer.get()); |
| 85 | if (!pc) { |
| 86 | return nullptr; |
| 87 | } |
| 88 | |
| 89 | auto wrapper = rtc::MakeUnique<PeerConnectionWrapperForMediaTest>( |
| 90 | pc_factory, pc, std::move(observer)); |
| 91 | wrapper->set_media_engine(media_engine_ptr); |
| 92 | return wrapper; |
| 93 | } |
| 94 | |
| 95 | // Accepts the same arguments as CreatePeerConnection and adds default audio |
| 96 | // and video tracks. |
| 97 | template <typename... Args> |
| 98 | WrapperPtr CreatePeerConnectionWithAudioVideo(Args&&... args) { |
| 99 | auto wrapper = CreatePeerConnection(std::forward<Args>(args)...); |
| 100 | if (!wrapper) { |
| 101 | return nullptr; |
| 102 | } |
| 103 | wrapper->AddAudioTrack("a"); |
| 104 | wrapper->AddVideoTrack("v"); |
| 105 | return wrapper; |
| 106 | } |
| 107 | |
| 108 | const cricket::MediaContentDescription* GetMediaContent( |
| 109 | const SessionDescriptionInterface* sdesc, |
| 110 | const std::string& mid) { |
| 111 | const auto* content_desc = |
| 112 | sdesc->description()->GetContentDescriptionByName(mid); |
| 113 | return static_cast<const cricket::MediaContentDescription*>(content_desc); |
| 114 | } |
| 115 | |
Steve Anton | 4e70a72 | 2017-11-28 14:57:10 -0800 | [diff] [blame] | 116 | RtpTransceiverDirection GetMediaContentDirection( |
Steve Anton | 8d3444d | 2017-10-20 15:30:51 -0700 | [diff] [blame] | 117 | const SessionDescriptionInterface* sdesc, |
| 118 | const std::string& mid) { |
| 119 | auto* media_content = GetMediaContent(sdesc, mid); |
| 120 | RTC_DCHECK(media_content); |
| 121 | return media_content->direction(); |
| 122 | } |
| 123 | |
| 124 | std::unique_ptr<rtc::VirtualSocketServer> vss_; |
| 125 | rtc::AutoSocketServerThread main_; |
| 126 | }; |
| 127 | |
| 128 | TEST_F(PeerConnectionMediaTest, |
| 129 | FailToSetRemoteDescriptionIfCreateMediaChannelFails) { |
| 130 | auto caller = CreatePeerConnectionWithAudioVideo(); |
| 131 | auto callee = CreatePeerConnectionWithAudioVideo(); |
| 132 | callee->media_engine()->set_fail_create_channel(true); |
| 133 | |
| 134 | std::string error; |
| 135 | ASSERT_FALSE(callee->SetRemoteDescription(caller->CreateOffer(), &error)); |
| 136 | EXPECT_EQ("Failed to set remote offer sdp: Failed to create channels.", |
| 137 | error); |
| 138 | } |
| 139 | |
| 140 | TEST_F(PeerConnectionMediaTest, |
| 141 | FailToSetLocalDescriptionIfCreateMediaChannelFails) { |
| 142 | auto caller = CreatePeerConnectionWithAudioVideo(); |
| 143 | caller->media_engine()->set_fail_create_channel(true); |
| 144 | |
| 145 | std::string error; |
| 146 | ASSERT_FALSE(caller->SetLocalDescription(caller->CreateOffer(), &error)); |
| 147 | EXPECT_EQ("Failed to set local offer sdp: Failed to create channels.", error); |
| 148 | } |
| 149 | |
| 150 | std::vector<std::string> GetIds( |
| 151 | const std::vector<cricket::StreamParams>& streams) { |
| 152 | std::vector<std::string> ids; |
| 153 | for (const auto& stream : streams) { |
| 154 | ids.push_back(stream.id); |
| 155 | } |
| 156 | return ids; |
| 157 | } |
| 158 | |
| 159 | // Test that exchanging an offer and answer with each side having an audio and |
| 160 | // video stream creates the appropriate send/recv streams in the underlying |
| 161 | // media engine on both sides. |
| 162 | TEST_F(PeerConnectionMediaTest, AudioVideoOfferAnswerCreateSendRecvStreams) { |
| 163 | const std::string kCallerAudioId = "caller_a"; |
| 164 | const std::string kCallerVideoId = "caller_v"; |
| 165 | const std::string kCalleeAudioId = "callee_a"; |
| 166 | const std::string kCalleeVideoId = "callee_v"; |
| 167 | |
| 168 | auto caller = CreatePeerConnection(); |
| 169 | caller->AddAudioTrack(kCallerAudioId); |
| 170 | caller->AddVideoTrack(kCallerVideoId); |
| 171 | |
| 172 | auto callee = CreatePeerConnection(); |
| 173 | callee->AddAudioTrack(kCalleeAudioId); |
| 174 | callee->AddVideoTrack(kCalleeVideoId); |
| 175 | |
| 176 | ASSERT_TRUE(callee->SetRemoteDescription(caller->CreateOfferAndSetAsLocal())); |
| 177 | ASSERT_TRUE( |
| 178 | caller->SetRemoteDescription(callee->CreateAnswerAndSetAsLocal())); |
| 179 | |
| 180 | auto* caller_voice = caller->media_engine()->GetVoiceChannel(0); |
| 181 | EXPECT_THAT(GetIds(caller_voice->recv_streams()), |
| 182 | ElementsAre(kCalleeAudioId)); |
| 183 | EXPECT_THAT(GetIds(caller_voice->send_streams()), |
| 184 | ElementsAre(kCallerAudioId)); |
| 185 | |
| 186 | auto* caller_video = caller->media_engine()->GetVideoChannel(0); |
| 187 | EXPECT_THAT(GetIds(caller_video->recv_streams()), |
| 188 | ElementsAre(kCalleeVideoId)); |
| 189 | EXPECT_THAT(GetIds(caller_video->send_streams()), |
| 190 | ElementsAre(kCallerVideoId)); |
| 191 | |
| 192 | auto* callee_voice = callee->media_engine()->GetVoiceChannel(0); |
| 193 | EXPECT_THAT(GetIds(callee_voice->recv_streams()), |
| 194 | ElementsAre(kCallerAudioId)); |
| 195 | EXPECT_THAT(GetIds(callee_voice->send_streams()), |
| 196 | ElementsAre(kCalleeAudioId)); |
| 197 | |
| 198 | auto* callee_video = callee->media_engine()->GetVideoChannel(0); |
| 199 | EXPECT_THAT(GetIds(callee_video->recv_streams()), |
| 200 | ElementsAre(kCallerVideoId)); |
| 201 | EXPECT_THAT(GetIds(callee_video->send_streams()), |
| 202 | ElementsAre(kCalleeVideoId)); |
| 203 | } |
| 204 | |
| 205 | // Test that removing streams from a subsequent offer causes the receive streams |
| 206 | // on the callee to be removed. |
| 207 | TEST_F(PeerConnectionMediaTest, EmptyRemoteOfferRemovesRecvStreams) { |
| 208 | auto caller = CreatePeerConnection(); |
| 209 | auto caller_audio_track = caller->AddAudioTrack("a"); |
| 210 | auto caller_video_track = caller->AddVideoTrack("v"); |
| 211 | auto callee = CreatePeerConnectionWithAudioVideo(); |
| 212 | |
| 213 | ASSERT_TRUE(callee->SetRemoteDescription(caller->CreateOfferAndSetAsLocal())); |
| 214 | ASSERT_TRUE( |
| 215 | caller->SetRemoteDescription(callee->CreateAnswerAndSetAsLocal())); |
| 216 | |
| 217 | // Remove both tracks from caller. |
| 218 | caller->pc()->RemoveTrack(caller_audio_track); |
| 219 | caller->pc()->RemoveTrack(caller_video_track); |
| 220 | |
| 221 | ASSERT_TRUE(callee->SetRemoteDescription(caller->CreateOfferAndSetAsLocal())); |
| 222 | ASSERT_TRUE( |
| 223 | caller->SetRemoteDescription(callee->CreateAnswerAndSetAsLocal())); |
| 224 | |
| 225 | auto callee_voice = callee->media_engine()->GetVoiceChannel(0); |
| 226 | EXPECT_EQ(1u, callee_voice->send_streams().size()); |
| 227 | EXPECT_EQ(0u, callee_voice->recv_streams().size()); |
| 228 | |
| 229 | auto callee_video = callee->media_engine()->GetVideoChannel(0); |
| 230 | EXPECT_EQ(1u, callee_video->send_streams().size()); |
| 231 | EXPECT_EQ(0u, callee_video->recv_streams().size()); |
| 232 | } |
| 233 | |
| 234 | // Test that removing streams from a subsequent answer causes the send streams |
| 235 | // on the callee to be removed when applied locally. |
| 236 | TEST_F(PeerConnectionMediaTest, EmptyLocalAnswerRemovesSendStreams) { |
| 237 | auto caller = CreatePeerConnectionWithAudioVideo(); |
| 238 | auto callee = CreatePeerConnection(); |
| 239 | auto callee_audio_track = callee->AddAudioTrack("a"); |
| 240 | auto callee_video_track = callee->AddVideoTrack("v"); |
| 241 | |
| 242 | ASSERT_TRUE(callee->SetRemoteDescription(caller->CreateOfferAndSetAsLocal())); |
| 243 | ASSERT_TRUE( |
| 244 | caller->SetRemoteDescription(callee->CreateAnswerAndSetAsLocal())); |
| 245 | |
| 246 | // Remove both tracks from callee. |
| 247 | callee->pc()->RemoveTrack(callee_audio_track); |
| 248 | callee->pc()->RemoveTrack(callee_video_track); |
| 249 | |
| 250 | ASSERT_TRUE(callee->SetRemoteDescription(caller->CreateOfferAndSetAsLocal())); |
| 251 | ASSERT_TRUE( |
| 252 | caller->SetRemoteDescription(callee->CreateAnswerAndSetAsLocal())); |
| 253 | |
| 254 | auto callee_voice = callee->media_engine()->GetVoiceChannel(0); |
| 255 | EXPECT_EQ(0u, callee_voice->send_streams().size()); |
| 256 | EXPECT_EQ(1u, callee_voice->recv_streams().size()); |
| 257 | |
| 258 | auto callee_video = callee->media_engine()->GetVideoChannel(0); |
| 259 | EXPECT_EQ(0u, callee_video->send_streams().size()); |
| 260 | EXPECT_EQ(1u, callee_video->recv_streams().size()); |
| 261 | } |
| 262 | |
| 263 | // Test that a new stream in a subsequent offer causes a new receive stream to |
| 264 | // be created on the callee. |
| 265 | TEST_F(PeerConnectionMediaTest, NewStreamInRemoteOfferAddsRecvStreams) { |
| 266 | auto caller = CreatePeerConnectionWithAudioVideo(); |
| 267 | auto callee = CreatePeerConnection(); |
| 268 | |
| 269 | ASSERT_TRUE(callee->SetRemoteDescription(caller->CreateOfferAndSetAsLocal())); |
| 270 | ASSERT_TRUE( |
| 271 | caller->SetRemoteDescription(callee->CreateAnswerAndSetAsLocal())); |
| 272 | |
| 273 | // Add second set of tracks to the caller. |
| 274 | caller->AddAudioTrack("a2"); |
| 275 | caller->AddVideoTrack("v2"); |
| 276 | |
| 277 | ASSERT_TRUE(callee->SetRemoteDescription(caller->CreateOfferAndSetAsLocal())); |
| 278 | ASSERT_TRUE( |
| 279 | caller->SetRemoteDescription(callee->CreateAnswerAndSetAsLocal())); |
| 280 | |
| 281 | auto callee_voice = callee->media_engine()->GetVoiceChannel(0); |
| 282 | EXPECT_EQ(2u, callee_voice->recv_streams().size()); |
| 283 | auto callee_video = callee->media_engine()->GetVideoChannel(0); |
| 284 | EXPECT_EQ(2u, callee_video->recv_streams().size()); |
| 285 | } |
| 286 | |
| 287 | // Test that a new stream in a subsequent answer causes a new send stream to be |
| 288 | // created on the callee when added locally. |
| 289 | TEST_F(PeerConnectionMediaTest, NewStreamInLocalAnswerAddsSendStreams) { |
| 290 | auto caller = CreatePeerConnection(); |
| 291 | auto callee = CreatePeerConnectionWithAudioVideo(); |
| 292 | |
| 293 | RTCOfferAnswerOptions options; |
| 294 | options.offer_to_receive_audio = |
| 295 | RTCOfferAnswerOptions::kOfferToReceiveMediaTrue; |
| 296 | options.offer_to_receive_video = |
| 297 | RTCOfferAnswerOptions::kOfferToReceiveMediaTrue; |
| 298 | |
| 299 | ASSERT_TRUE( |
| 300 | callee->SetRemoteDescription(caller->CreateOfferAndSetAsLocal(options))); |
| 301 | ASSERT_TRUE( |
| 302 | caller->SetRemoteDescription(callee->CreateAnswerAndSetAsLocal())); |
| 303 | |
| 304 | // Add second set of tracks to the callee. |
| 305 | callee->AddAudioTrack("a2"); |
| 306 | callee->AddVideoTrack("v2"); |
| 307 | |
| 308 | ASSERT_TRUE( |
| 309 | callee->SetRemoteDescription(caller->CreateOfferAndSetAsLocal(options))); |
| 310 | ASSERT_TRUE( |
| 311 | caller->SetRemoteDescription(callee->CreateAnswerAndSetAsLocal())); |
| 312 | |
| 313 | auto callee_voice = callee->media_engine()->GetVoiceChannel(0); |
| 314 | EXPECT_EQ(2u, callee_voice->send_streams().size()); |
| 315 | auto callee_video = callee->media_engine()->GetVideoChannel(0); |
| 316 | EXPECT_EQ(2u, callee_video->send_streams().size()); |
| 317 | } |
| 318 | |
| 319 | // A PeerConnection with no local streams and no explicit answer constraints |
| 320 | // should not reject any offered media sections. |
| 321 | TEST_F(PeerConnectionMediaTest, |
| 322 | CreateAnswerWithNoStreamsAndDefaultOptionsDoesNotReject) { |
| 323 | auto caller = CreatePeerConnectionWithAudioVideo(); |
| 324 | auto callee = CreatePeerConnection(); |
| 325 | ASSERT_TRUE(callee->SetRemoteDescription(caller->CreateOfferAndSetAsLocal())); |
| 326 | auto answer = callee->CreateAnswer(); |
| 327 | |
| 328 | const auto* audio_content = |
| 329 | cricket::GetFirstAudioContent(answer->description()); |
| 330 | ASSERT_TRUE(audio_content); |
| 331 | EXPECT_FALSE(audio_content->rejected); |
| 332 | |
| 333 | const auto* video_content = |
| 334 | cricket::GetFirstVideoContent(answer->description()); |
| 335 | ASSERT_TRUE(video_content); |
| 336 | EXPECT_FALSE(video_content->rejected); |
| 337 | } |
| 338 | |
| 339 | class PeerConnectionMediaOfferDirectionTest |
| 340 | : public PeerConnectionMediaTest, |
| 341 | public ::testing::WithParamInterface< |
Steve Anton | 4e70a72 | 2017-11-28 14:57:10 -0800 | [diff] [blame] | 342 | std::tuple<bool, int, RtpTransceiverDirection>> { |
Steve Anton | 8d3444d | 2017-10-20 15:30:51 -0700 | [diff] [blame] | 343 | protected: |
| 344 | PeerConnectionMediaOfferDirectionTest() { |
| 345 | send_media_ = std::get<0>(GetParam()); |
| 346 | offer_to_receive_ = std::get<1>(GetParam()); |
| 347 | expected_direction_ = std::get<2>(GetParam()); |
| 348 | } |
| 349 | |
| 350 | bool send_media_; |
| 351 | int offer_to_receive_; |
Steve Anton | 4e70a72 | 2017-11-28 14:57:10 -0800 | [diff] [blame] | 352 | RtpTransceiverDirection expected_direction_; |
Steve Anton | 8d3444d | 2017-10-20 15:30:51 -0700 | [diff] [blame] | 353 | }; |
| 354 | |
| 355 | // Tests that the correct direction is set on the media description according |
| 356 | // to the presence of a local media track and the offer_to_receive setting. |
| 357 | TEST_P(PeerConnectionMediaOfferDirectionTest, VerifyDirection) { |
| 358 | auto caller = CreatePeerConnection(); |
| 359 | if (send_media_) { |
| 360 | caller->AddAudioTrack("a"); |
| 361 | } |
| 362 | |
| 363 | RTCOfferAnswerOptions options; |
| 364 | options.offer_to_receive_audio = offer_to_receive_; |
| 365 | auto offer = caller->CreateOffer(options); |
| 366 | |
| 367 | auto* media_content = GetMediaContent(offer.get(), cricket::CN_AUDIO); |
Steve Anton | 4e70a72 | 2017-11-28 14:57:10 -0800 | [diff] [blame] | 368 | if (expected_direction_ == RtpTransceiverDirection::kInactive) { |
Steve Anton | 8d3444d | 2017-10-20 15:30:51 -0700 | [diff] [blame] | 369 | EXPECT_FALSE(media_content); |
| 370 | } else { |
| 371 | EXPECT_EQ(expected_direction_, media_content->direction()); |
| 372 | } |
| 373 | } |
| 374 | |
| 375 | // Note that in these tests, MD_INACTIVE indicates that no media section is |
| 376 | // included in the offer, not that the media direction is inactive. |
Steve Anton | 4e70a72 | 2017-11-28 14:57:10 -0800 | [diff] [blame] | 377 | INSTANTIATE_TEST_CASE_P( |
| 378 | PeerConnectionMediaTest, |
| 379 | PeerConnectionMediaOfferDirectionTest, |
| 380 | Values(std::make_tuple(false, -1, RtpTransceiverDirection::kInactive), |
| 381 | std::make_tuple(false, 0, RtpTransceiverDirection::kInactive), |
| 382 | std::make_tuple(false, 1, RtpTransceiverDirection::kRecvOnly), |
| 383 | std::make_tuple(true, -1, RtpTransceiverDirection::kSendRecv), |
| 384 | std::make_tuple(true, 0, RtpTransceiverDirection::kSendOnly), |
| 385 | std::make_tuple(true, 1, RtpTransceiverDirection::kSendRecv))); |
Steve Anton | 8d3444d | 2017-10-20 15:30:51 -0700 | [diff] [blame] | 386 | |
| 387 | class PeerConnectionMediaAnswerDirectionTest |
| 388 | : public PeerConnectionMediaTest, |
| 389 | public ::testing::WithParamInterface< |
Steve Anton | 4e70a72 | 2017-11-28 14:57:10 -0800 | [diff] [blame] | 390 | std::tuple<RtpTransceiverDirection, bool, int>> { |
Steve Anton | 8d3444d | 2017-10-20 15:30:51 -0700 | [diff] [blame] | 391 | protected: |
| 392 | PeerConnectionMediaAnswerDirectionTest() { |
| 393 | offer_direction_ = std::get<0>(GetParam()); |
| 394 | send_media_ = std::get<1>(GetParam()); |
| 395 | offer_to_receive_ = std::get<2>(GetParam()); |
| 396 | } |
| 397 | |
Steve Anton | 4e70a72 | 2017-11-28 14:57:10 -0800 | [diff] [blame] | 398 | RtpTransceiverDirection offer_direction_; |
Steve Anton | 8d3444d | 2017-10-20 15:30:51 -0700 | [diff] [blame] | 399 | bool send_media_; |
| 400 | int offer_to_receive_; |
| 401 | }; |
| 402 | |
| 403 | // Tests that the direction in an answer is correct according to direction sent |
| 404 | // in the offer, the presence of a local media track on the receive side and the |
| 405 | // offer_to_receive setting. |
| 406 | TEST_P(PeerConnectionMediaAnswerDirectionTest, VerifyDirection) { |
| 407 | auto caller = CreatePeerConnection(); |
| 408 | caller->AddAudioTrack("a"); |
| 409 | |
| 410 | // Create the offer with an audio section and set its direction. |
| 411 | auto offer = caller->CreateOffer(); |
| 412 | cricket::GetFirstAudioContentDescription(offer->description()) |
| 413 | ->set_direction(offer_direction_); |
| 414 | |
| 415 | auto callee = CreatePeerConnection(); |
| 416 | if (send_media_) { |
| 417 | callee->AddAudioTrack("a"); |
| 418 | } |
| 419 | ASSERT_TRUE(callee->SetRemoteDescription(std::move(offer))); |
| 420 | |
| 421 | // Create the answer according to the test parameters. |
| 422 | RTCOfferAnswerOptions options; |
| 423 | options.offer_to_receive_audio = offer_to_receive_; |
| 424 | auto answer = callee->CreateAnswer(options); |
| 425 | |
| 426 | // The expected direction in the answer is the intersection of each side's |
| 427 | // capability to send/recv media. |
| 428 | // For the offerer, the direction is given in the offer (offer_direction_). |
| 429 | // For the answerer, the direction has two components: |
| 430 | // 1. Send if the answerer has a local track to send. |
| 431 | // 2. Receive if the answerer has explicitly set the offer_to_receive to 1 or |
| 432 | // if it has been left as default. |
Steve Anton | 4e70a72 | 2017-11-28 14:57:10 -0800 | [diff] [blame] | 433 | bool offer_send = RtpTransceiverDirectionHasSend(offer_direction_); |
| 434 | bool offer_recv = RtpTransceiverDirectionHasRecv(offer_direction_); |
Steve Anton | 8d3444d | 2017-10-20 15:30:51 -0700 | [diff] [blame] | 435 | |
| 436 | // The negotiated components determine the direction set in the answer. |
Steve Anton | 1d03a75 | 2017-11-27 14:30:09 -0800 | [diff] [blame] | 437 | bool negotiate_send = (send_media_ && offer_recv); |
| 438 | bool negotiate_recv = ((offer_to_receive_ != 0) && offer_send); |
Steve Anton | 8d3444d | 2017-10-20 15:30:51 -0700 | [diff] [blame] | 439 | |
| 440 | auto expected_direction = |
Steve Anton | 4e70a72 | 2017-11-28 14:57:10 -0800 | [diff] [blame] | 441 | RtpTransceiverDirectionFromSendRecv(negotiate_send, negotiate_recv); |
Steve Anton | 8d3444d | 2017-10-20 15:30:51 -0700 | [diff] [blame] | 442 | EXPECT_EQ(expected_direction, |
| 443 | GetMediaContentDirection(answer.get(), cricket::CN_AUDIO)); |
| 444 | } |
| 445 | |
| 446 | // Tests that the media section is rejected if and only if the callee has no |
| 447 | // local media track and has set offer_to_receive to 0, no matter which |
| 448 | // direction the caller indicated in the offer. |
| 449 | TEST_P(PeerConnectionMediaAnswerDirectionTest, VerifyRejected) { |
| 450 | auto caller = CreatePeerConnection(); |
| 451 | caller->AddAudioTrack("a"); |
| 452 | |
| 453 | // Create the offer with an audio section and set its direction. |
| 454 | auto offer = caller->CreateOffer(); |
| 455 | cricket::GetFirstAudioContentDescription(offer->description()) |
| 456 | ->set_direction(offer_direction_); |
| 457 | |
| 458 | auto callee = CreatePeerConnection(); |
| 459 | if (send_media_) { |
| 460 | callee->AddAudioTrack("a"); |
| 461 | } |
| 462 | ASSERT_TRUE(callee->SetRemoteDescription(std::move(offer))); |
| 463 | |
| 464 | // Create the answer according to the test parameters. |
| 465 | RTCOfferAnswerOptions options; |
| 466 | options.offer_to_receive_audio = offer_to_receive_; |
| 467 | auto answer = callee->CreateAnswer(options); |
| 468 | |
| 469 | // The media section is rejected if and only if offer_to_receive is explicitly |
| 470 | // set to 0 and there is no media to send. |
| 471 | auto* audio_content = cricket::GetFirstAudioContent(answer->description()); |
| 472 | ASSERT_TRUE(audio_content); |
| 473 | EXPECT_EQ((offer_to_receive_ == 0 && !send_media_), audio_content->rejected); |
| 474 | } |
| 475 | |
| 476 | INSTANTIATE_TEST_CASE_P(PeerConnectionMediaTest, |
| 477 | PeerConnectionMediaAnswerDirectionTest, |
Steve Anton | 4e70a72 | 2017-11-28 14:57:10 -0800 | [diff] [blame] | 478 | Combine(Values(RtpTransceiverDirection::kInactive, |
| 479 | RtpTransceiverDirection::kSendOnly, |
| 480 | RtpTransceiverDirection::kRecvOnly, |
| 481 | RtpTransceiverDirection::kSendRecv), |
Steve Anton | 8d3444d | 2017-10-20 15:30:51 -0700 | [diff] [blame] | 482 | Bool(), |
| 483 | Values(-1, 0, 1))); |
| 484 | |
| 485 | TEST_F(PeerConnectionMediaTest, OfferHasDifferentDirectionForAudioVideo) { |
| 486 | auto caller = CreatePeerConnection(); |
| 487 | caller->AddVideoTrack("v"); |
| 488 | |
| 489 | RTCOfferAnswerOptions options; |
| 490 | options.offer_to_receive_audio = 1; |
| 491 | options.offer_to_receive_video = 0; |
| 492 | auto offer = caller->CreateOffer(options); |
| 493 | |
Steve Anton | 4e70a72 | 2017-11-28 14:57:10 -0800 | [diff] [blame] | 494 | EXPECT_EQ(RtpTransceiverDirection::kRecvOnly, |
Steve Anton | 8d3444d | 2017-10-20 15:30:51 -0700 | [diff] [blame] | 495 | GetMediaContentDirection(offer.get(), cricket::CN_AUDIO)); |
Steve Anton | 4e70a72 | 2017-11-28 14:57:10 -0800 | [diff] [blame] | 496 | EXPECT_EQ(RtpTransceiverDirection::kSendOnly, |
Steve Anton | 8d3444d | 2017-10-20 15:30:51 -0700 | [diff] [blame] | 497 | GetMediaContentDirection(offer.get(), cricket::CN_VIDEO)); |
| 498 | } |
| 499 | |
| 500 | TEST_F(PeerConnectionMediaTest, AnswerHasDifferentDirectionsForAudioVideo) { |
| 501 | auto caller = CreatePeerConnectionWithAudioVideo(); |
| 502 | auto callee = CreatePeerConnection(); |
| 503 | callee->AddVideoTrack("v"); |
| 504 | |
| 505 | ASSERT_TRUE(callee->SetRemoteDescription(caller->CreateOfferAndSetAsLocal())); |
| 506 | |
| 507 | RTCOfferAnswerOptions options; |
| 508 | options.offer_to_receive_audio = 1; |
| 509 | options.offer_to_receive_video = 0; |
| 510 | auto answer = callee->CreateAnswer(options); |
| 511 | |
Steve Anton | 4e70a72 | 2017-11-28 14:57:10 -0800 | [diff] [blame] | 512 | EXPECT_EQ(RtpTransceiverDirection::kRecvOnly, |
Steve Anton | 8d3444d | 2017-10-20 15:30:51 -0700 | [diff] [blame] | 513 | GetMediaContentDirection(answer.get(), cricket::CN_AUDIO)); |
Steve Anton | 4e70a72 | 2017-11-28 14:57:10 -0800 | [diff] [blame] | 514 | EXPECT_EQ(RtpTransceiverDirection::kSendOnly, |
Steve Anton | 8d3444d | 2017-10-20 15:30:51 -0700 | [diff] [blame] | 515 | GetMediaContentDirection(answer.get(), cricket::CN_VIDEO)); |
| 516 | } |
| 517 | |
| 518 | void AddComfortNoiseCodecsToSend(cricket::FakeMediaEngine* media_engine) { |
| 519 | const cricket::AudioCodec kComfortNoiseCodec8k(102, "CN", 8000, 0, 1); |
| 520 | const cricket::AudioCodec kComfortNoiseCodec16k(103, "CN", 16000, 0, 1); |
| 521 | |
| 522 | auto codecs = media_engine->audio_send_codecs(); |
| 523 | codecs.push_back(kComfortNoiseCodec8k); |
| 524 | codecs.push_back(kComfortNoiseCodec16k); |
| 525 | media_engine->SetAudioCodecs(codecs); |
| 526 | } |
| 527 | |
| 528 | bool HasAnyComfortNoiseCodecs(const cricket::SessionDescription* desc) { |
| 529 | const auto* audio_desc = cricket::GetFirstAudioContentDescription(desc); |
| 530 | for (const auto& codec : audio_desc->codecs()) { |
| 531 | if (codec.name == "CN") { |
| 532 | return true; |
| 533 | } |
| 534 | } |
| 535 | return false; |
| 536 | } |
| 537 | |
| 538 | TEST_F(PeerConnectionMediaTest, |
| 539 | CreateOfferWithNoVoiceActivityDetectionIncludesNoComfortNoiseCodecs) { |
| 540 | auto caller = CreatePeerConnectionWithAudioVideo(); |
| 541 | AddComfortNoiseCodecsToSend(caller->media_engine()); |
| 542 | |
| 543 | RTCOfferAnswerOptions options; |
| 544 | options.voice_activity_detection = false; |
| 545 | auto offer = caller->CreateOffer(options); |
| 546 | |
| 547 | EXPECT_FALSE(HasAnyComfortNoiseCodecs(offer->description())); |
| 548 | } |
| 549 | |
| 550 | TEST_F(PeerConnectionMediaTest, |
| 551 | CreateAnswerWithNoVoiceActivityDetectionIncludesNoComfortNoiseCodecs) { |
| 552 | auto caller = CreatePeerConnectionWithAudioVideo(); |
| 553 | AddComfortNoiseCodecsToSend(caller->media_engine()); |
| 554 | auto callee = CreatePeerConnectionWithAudioVideo(); |
| 555 | AddComfortNoiseCodecsToSend(callee->media_engine()); |
| 556 | |
| 557 | ASSERT_TRUE(callee->SetRemoteDescription(caller->CreateOfferAndSetAsLocal())); |
| 558 | |
| 559 | RTCOfferAnswerOptions options; |
| 560 | options.voice_activity_detection = false; |
| 561 | auto answer = callee->CreateAnswer(options); |
| 562 | |
| 563 | EXPECT_FALSE(HasAnyComfortNoiseCodecs(answer->description())); |
| 564 | } |
| 565 | |
| 566 | // The following test group verifies that we reject answers with invalid media |
| 567 | // sections as per RFC 3264. |
| 568 | |
| 569 | class PeerConnectionMediaInvalidMediaTest |
| 570 | : public PeerConnectionMediaTest, |
| 571 | public ::testing::WithParamInterface< |
| 572 | std::tuple<std::string, |
| 573 | std::function<void(cricket::SessionDescription*)>, |
| 574 | std::string>> { |
| 575 | protected: |
| 576 | PeerConnectionMediaInvalidMediaTest() { |
| 577 | mutator_ = std::get<1>(GetParam()); |
| 578 | expected_error_ = std::get<2>(GetParam()); |
| 579 | } |
| 580 | |
| 581 | std::function<void(cricket::SessionDescription*)> mutator_; |
| 582 | std::string expected_error_; |
| 583 | }; |
| 584 | |
| 585 | TEST_P(PeerConnectionMediaInvalidMediaTest, FailToSetRemoteAnswer) { |
| 586 | auto caller = CreatePeerConnectionWithAudioVideo(); |
| 587 | auto callee = CreatePeerConnectionWithAudioVideo(); |
| 588 | |
| 589 | ASSERT_TRUE(callee->SetRemoteDescription(caller->CreateOfferAndSetAsLocal())); |
| 590 | |
| 591 | auto answer = callee->CreateAnswer(); |
| 592 | mutator_(answer->description()); |
| 593 | |
| 594 | std::string error; |
| 595 | ASSERT_FALSE(caller->SetRemoteDescription(std::move(answer), &error)); |
| 596 | EXPECT_EQ("Failed to set remote answer sdp: " + expected_error_, error); |
| 597 | } |
| 598 | |
| 599 | TEST_P(PeerConnectionMediaInvalidMediaTest, FailToSetLocalAnswer) { |
| 600 | auto caller = CreatePeerConnectionWithAudioVideo(); |
| 601 | auto callee = CreatePeerConnectionWithAudioVideo(); |
| 602 | |
| 603 | ASSERT_TRUE(callee->SetRemoteDescription(caller->CreateOfferAndSetAsLocal())); |
| 604 | |
| 605 | auto answer = callee->CreateAnswer(); |
| 606 | mutator_(answer->description()); |
| 607 | |
| 608 | std::string error; |
| 609 | ASSERT_FALSE(callee->SetLocalDescription(std::move(answer), &error)); |
| 610 | EXPECT_EQ("Failed to set local answer sdp: " + expected_error_, error); |
| 611 | } |
| 612 | |
| 613 | void RemoveVideoContent(cricket::SessionDescription* desc) { |
| 614 | auto content_name = cricket::GetFirstVideoContent(desc)->name; |
| 615 | desc->RemoveContentByName(content_name); |
| 616 | desc->RemoveTransportInfoByName(content_name); |
| 617 | } |
| 618 | |
| 619 | void RenameVideoContent(cricket::SessionDescription* desc) { |
| 620 | auto* video_content = cricket::GetFirstVideoContent(desc); |
| 621 | auto* transport_info = desc->GetTransportInfoByName(video_content->name); |
| 622 | video_content->name = "video_renamed"; |
| 623 | transport_info->content_name = video_content->name; |
| 624 | } |
| 625 | |
| 626 | void ReverseMediaContent(cricket::SessionDescription* desc) { |
| 627 | std::reverse(desc->contents().begin(), desc->contents().end()); |
| 628 | std::reverse(desc->transport_infos().begin(), desc->transport_infos().end()); |
| 629 | } |
| 630 | |
| 631 | void ChangeMediaTypeAudioToVideo(cricket::SessionDescription* desc) { |
| 632 | desc->RemoveContentByName(cricket::CN_AUDIO); |
| 633 | auto* video_content = desc->GetContentByName(cricket::CN_VIDEO); |
| 634 | desc->AddContent(cricket::CN_AUDIO, cricket::NS_JINGLE_RTP, |
| 635 | video_content->description->Copy()); |
| 636 | } |
| 637 | |
| 638 | constexpr char kMLinesOutOfOrder[] = |
| 639 | "The order of m-lines in answer doesn't match order in offer. Rejecting " |
| 640 | "answer."; |
| 641 | |
| 642 | INSTANTIATE_TEST_CASE_P( |
| 643 | PeerConnectionMediaTest, |
| 644 | PeerConnectionMediaInvalidMediaTest, |
| 645 | Values( |
| 646 | std::make_tuple("remove video", RemoveVideoContent, kMLinesOutOfOrder), |
| 647 | std::make_tuple("rename video", RenameVideoContent, kMLinesOutOfOrder), |
| 648 | std::make_tuple("reverse media sections", |
| 649 | ReverseMediaContent, |
| 650 | kMLinesOutOfOrder), |
| 651 | std::make_tuple("change audio type to video type", |
| 652 | ChangeMediaTypeAudioToVideo, |
| 653 | kMLinesOutOfOrder))); |
| 654 | |
| 655 | // Test that the correct media engine send/recv streams are created when doing |
| 656 | // a series of offer/answers where audio/video are both sent, then audio is |
| 657 | // rejected, then both audio/video sent again. |
| 658 | TEST_F(PeerConnectionMediaTest, TestAVOfferWithAudioOnlyAnswer) { |
| 659 | RTCOfferAnswerOptions options_reject_video; |
| 660 | options_reject_video.offer_to_receive_audio = |
| 661 | RTCOfferAnswerOptions::kOfferToReceiveMediaTrue; |
| 662 | options_reject_video.offer_to_receive_video = 0; |
| 663 | |
| 664 | auto caller = CreatePeerConnection(); |
| 665 | caller->AddAudioTrack("a"); |
| 666 | caller->AddVideoTrack("v"); |
| 667 | auto callee = CreatePeerConnection(); |
| 668 | |
| 669 | // Caller initially offers to send/recv audio and video. |
| 670 | ASSERT_TRUE(callee->SetRemoteDescription(caller->CreateOfferAndSetAsLocal())); |
| 671 | // Callee accepts the audio as recv only but rejects the video. |
| 672 | ASSERT_TRUE(caller->SetRemoteDescription( |
| 673 | callee->CreateAnswerAndSetAsLocal(options_reject_video))); |
| 674 | |
| 675 | auto caller_voice = caller->media_engine()->GetVoiceChannel(0); |
| 676 | ASSERT_TRUE(caller_voice); |
| 677 | EXPECT_EQ(0u, caller_voice->recv_streams().size()); |
| 678 | EXPECT_EQ(1u, caller_voice->send_streams().size()); |
| 679 | auto caller_video = caller->media_engine()->GetVideoChannel(0); |
| 680 | EXPECT_FALSE(caller_video); |
| 681 | |
| 682 | // Callee adds its own audio/video stream and offers to receive audio/video |
| 683 | // too. |
| 684 | callee->AddAudioTrack("a"); |
| 685 | auto callee_video_track = callee->AddVideoTrack("v"); |
| 686 | ASSERT_TRUE(callee->SetRemoteDescription(caller->CreateOfferAndSetAsLocal())); |
| 687 | ASSERT_TRUE( |
| 688 | caller->SetRemoteDescription(callee->CreateAnswerAndSetAsLocal())); |
| 689 | |
| 690 | auto callee_voice = callee->media_engine()->GetVoiceChannel(0); |
| 691 | ASSERT_TRUE(callee_voice); |
| 692 | EXPECT_EQ(1u, callee_voice->recv_streams().size()); |
| 693 | EXPECT_EQ(1u, callee_voice->send_streams().size()); |
| 694 | auto callee_video = callee->media_engine()->GetVideoChannel(0); |
| 695 | ASSERT_TRUE(callee_video); |
| 696 | EXPECT_EQ(1u, callee_video->recv_streams().size()); |
| 697 | EXPECT_EQ(1u, callee_video->send_streams().size()); |
| 698 | |
| 699 | // Callee removes video but keeps audio and rejects the video once again. |
| 700 | callee->pc()->RemoveTrack(callee_video_track); |
| 701 | ASSERT_TRUE(callee->SetRemoteDescription(caller->CreateOfferAndSetAsLocal())); |
| 702 | ASSERT_TRUE( |
| 703 | callee->SetLocalDescription(callee->CreateAnswer(options_reject_video))); |
| 704 | |
| 705 | callee_voice = callee->media_engine()->GetVoiceChannel(0); |
| 706 | ASSERT_TRUE(callee_voice); |
| 707 | EXPECT_EQ(1u, callee_voice->recv_streams().size()); |
| 708 | EXPECT_EQ(1u, callee_voice->send_streams().size()); |
| 709 | callee_video = callee->media_engine()->GetVideoChannel(0); |
| 710 | EXPECT_FALSE(callee_video); |
| 711 | } |
| 712 | |
| 713 | // Test that the correct media engine send/recv streams are created when doing |
| 714 | // a series of offer/answers where audio/video are both sent, then video is |
| 715 | // rejected, then both audio/video sent again. |
| 716 | TEST_F(PeerConnectionMediaTest, TestAVOfferWithVideoOnlyAnswer) { |
| 717 | // Disable the bundling here. If the media is bundled on audio |
| 718 | // transport, then we can't reject the audio because switching the bundled |
| 719 | // transport is not currently supported. |
| 720 | // (https://bugs.chromium.org/p/webrtc/issues/detail?id=6704) |
| 721 | RTCOfferAnswerOptions options_no_bundle; |
| 722 | options_no_bundle.use_rtp_mux = false; |
| 723 | RTCOfferAnswerOptions options_reject_audio = options_no_bundle; |
| 724 | options_reject_audio.offer_to_receive_audio = 0; |
| 725 | options_reject_audio.offer_to_receive_video = |
| 726 | RTCOfferAnswerOptions::kMaxOfferToReceiveMedia; |
| 727 | |
| 728 | auto caller = CreatePeerConnection(); |
| 729 | caller->AddAudioTrack("a"); |
| 730 | caller->AddVideoTrack("v"); |
| 731 | auto callee = CreatePeerConnection(); |
| 732 | |
| 733 | // Caller initially offers to send/recv audio and video. |
| 734 | ASSERT_TRUE(callee->SetRemoteDescription(caller->CreateOfferAndSetAsLocal())); |
| 735 | // Callee accepts the video as recv only but rejects the audio. |
| 736 | ASSERT_TRUE(caller->SetRemoteDescription( |
| 737 | callee->CreateAnswerAndSetAsLocal(options_reject_audio))); |
| 738 | |
| 739 | auto caller_voice = caller->media_engine()->GetVoiceChannel(0); |
| 740 | EXPECT_FALSE(caller_voice); |
| 741 | auto caller_video = caller->media_engine()->GetVideoChannel(0); |
| 742 | ASSERT_TRUE(caller_video); |
| 743 | EXPECT_EQ(0u, caller_video->recv_streams().size()); |
| 744 | EXPECT_EQ(1u, caller_video->send_streams().size()); |
| 745 | |
| 746 | // Callee adds its own audio/video stream and offers to receive audio/video |
| 747 | // too. |
| 748 | auto callee_audio_track = callee->AddAudioTrack("a"); |
| 749 | callee->AddVideoTrack("v"); |
| 750 | ASSERT_TRUE(callee->SetRemoteDescription(caller->CreateOfferAndSetAsLocal())); |
| 751 | ASSERT_TRUE(caller->SetRemoteDescription( |
| 752 | callee->CreateAnswerAndSetAsLocal(options_no_bundle))); |
| 753 | |
| 754 | auto callee_voice = callee->media_engine()->GetVoiceChannel(0); |
| 755 | ASSERT_TRUE(callee_voice); |
| 756 | EXPECT_EQ(1u, callee_voice->recv_streams().size()); |
| 757 | EXPECT_EQ(1u, callee_voice->send_streams().size()); |
| 758 | auto callee_video = callee->media_engine()->GetVideoChannel(0); |
| 759 | ASSERT_TRUE(callee_video); |
| 760 | EXPECT_EQ(1u, callee_video->recv_streams().size()); |
| 761 | EXPECT_EQ(1u, callee_video->send_streams().size()); |
| 762 | |
| 763 | // Callee removes audio but keeps video and rejects the audio once again. |
| 764 | callee->pc()->RemoveTrack(callee_audio_track); |
| 765 | ASSERT_TRUE(callee->SetRemoteDescription(caller->CreateOfferAndSetAsLocal())); |
| 766 | ASSERT_TRUE( |
| 767 | callee->SetLocalDescription(callee->CreateAnswer(options_reject_audio))); |
| 768 | |
| 769 | callee_voice = callee->media_engine()->GetVoiceChannel(0); |
| 770 | EXPECT_FALSE(callee_voice); |
| 771 | callee_video = callee->media_engine()->GetVideoChannel(0); |
| 772 | ASSERT_TRUE(callee_video); |
| 773 | EXPECT_EQ(1u, callee_video->recv_streams().size()); |
| 774 | EXPECT_EQ(1u, callee_video->send_streams().size()); |
| 775 | } |
| 776 | |
| 777 | // Tests that if the underlying video encoder fails to be initialized (signaled |
| 778 | // by failing to set send codecs), the PeerConnection signals the error to the |
| 779 | // client. |
| 780 | TEST_F(PeerConnectionMediaTest, MediaEngineErrorPropagatedToClients) { |
| 781 | auto caller = CreatePeerConnectionWithAudioVideo(); |
| 782 | auto callee = CreatePeerConnectionWithAudioVideo(); |
| 783 | |
| 784 | ASSERT_TRUE(callee->SetRemoteDescription(caller->CreateOfferAndSetAsLocal())); |
| 785 | |
| 786 | auto video_channel = caller->media_engine()->GetVideoChannel(0); |
| 787 | video_channel->set_fail_set_send_codecs(true); |
| 788 | |
| 789 | std::string error; |
| 790 | ASSERT_FALSE(caller->SetRemoteDescription(callee->CreateAnswerAndSetAsLocal(), |
| 791 | &error)); |
| 792 | EXPECT_EQ( |
| 793 | "Failed to set remote answer sdp: Session error code: ERROR_CONTENT. " |
| 794 | "Session error description: Failed to set remote video description send " |
| 795 | "parameters..", |
| 796 | error); |
| 797 | } |
| 798 | |
| 799 | // Tests that if the underlying video encoder fails once then subsequent |
| 800 | // attempts at setting the local/remote description will also fail, even if |
| 801 | // SetSendCodecs no longer fails. |
| 802 | TEST_F(PeerConnectionMediaTest, |
| 803 | FailToApplyDescriptionIfVideoEncoderHasEverFailed) { |
| 804 | auto caller = CreatePeerConnectionWithAudioVideo(); |
| 805 | auto callee = CreatePeerConnectionWithAudioVideo(); |
| 806 | |
| 807 | ASSERT_TRUE(callee->SetRemoteDescription(caller->CreateOfferAndSetAsLocal())); |
| 808 | |
| 809 | auto video_channel = caller->media_engine()->GetVideoChannel(0); |
| 810 | video_channel->set_fail_set_send_codecs(true); |
| 811 | |
| 812 | EXPECT_FALSE( |
| 813 | caller->SetRemoteDescription(callee->CreateAnswerAndSetAsLocal())); |
| 814 | |
| 815 | video_channel->set_fail_set_send_codecs(false); |
| 816 | |
| 817 | EXPECT_FALSE(caller->SetRemoteDescription(callee->CreateAnswer())); |
| 818 | EXPECT_FALSE(caller->SetLocalDescription(caller->CreateOffer())); |
| 819 | } |
| 820 | |
| 821 | void RenameContent(cricket::SessionDescription* desc, |
| 822 | const std::string& old_name, |
| 823 | const std::string& new_name) { |
| 824 | auto* content = desc->GetContentByName(old_name); |
| 825 | RTC_DCHECK(content); |
| 826 | content->name = new_name; |
| 827 | auto* transport = desc->GetTransportInfoByName(old_name); |
| 828 | RTC_DCHECK(transport); |
| 829 | transport->content_name = new_name; |
| 830 | } |
| 831 | |
| 832 | // Tests that an answer responds with the same MIDs as the offer. |
| 833 | TEST_F(PeerConnectionMediaTest, AnswerHasSameMidsAsOffer) { |
| 834 | const std::string kAudioMid = "not default1"; |
| 835 | const std::string kVideoMid = "not default2"; |
| 836 | |
| 837 | auto caller = CreatePeerConnectionWithAudioVideo(); |
| 838 | auto callee = CreatePeerConnectionWithAudioVideo(); |
| 839 | |
| 840 | auto offer = caller->CreateOffer(); |
| 841 | RenameContent(offer->description(), cricket::CN_AUDIO, kAudioMid); |
| 842 | RenameContent(offer->description(), cricket::CN_VIDEO, kVideoMid); |
| 843 | ASSERT_TRUE(callee->SetRemoteDescription(std::move(offer))); |
| 844 | |
| 845 | auto answer = callee->CreateAnswer(); |
| 846 | EXPECT_EQ(kAudioMid, |
| 847 | cricket::GetFirstAudioContent(answer->description())->name); |
| 848 | EXPECT_EQ(kVideoMid, |
| 849 | cricket::GetFirstVideoContent(answer->description())->name); |
| 850 | } |
| 851 | |
| 852 | // Test that if the callee creates a re-offer, the MIDs are the same as the |
| 853 | // original offer. |
| 854 | TEST_F(PeerConnectionMediaTest, ReOfferHasSameMidsAsFirstOffer) { |
| 855 | const std::string kAudioMid = "not default1"; |
| 856 | const std::string kVideoMid = "not default2"; |
| 857 | |
| 858 | auto caller = CreatePeerConnectionWithAudioVideo(); |
| 859 | auto callee = CreatePeerConnectionWithAudioVideo(); |
| 860 | |
| 861 | auto offer = caller->CreateOffer(); |
| 862 | RenameContent(offer->description(), cricket::CN_AUDIO, kAudioMid); |
| 863 | RenameContent(offer->description(), cricket::CN_VIDEO, kVideoMid); |
| 864 | ASSERT_TRUE(callee->SetRemoteDescription(std::move(offer))); |
| 865 | ASSERT_TRUE(callee->SetLocalDescription(callee->CreateAnswer())); |
| 866 | |
| 867 | auto reoffer = callee->CreateOffer(); |
| 868 | EXPECT_EQ(kAudioMid, |
| 869 | cricket::GetFirstAudioContent(reoffer->description())->name); |
| 870 | EXPECT_EQ(kVideoMid, |
| 871 | cricket::GetFirstVideoContent(reoffer->description())->name); |
| 872 | } |
| 873 | |
| 874 | TEST_F(PeerConnectionMediaTest, |
| 875 | CombinedAudioVideoBweConfigPropagatedToMediaEngine) { |
| 876 | RTCConfiguration config; |
| 877 | config.combined_audio_video_bwe.emplace(true); |
| 878 | auto caller = CreatePeerConnectionWithAudioVideo(config); |
| 879 | |
| 880 | ASSERT_TRUE(caller->SetLocalDescription(caller->CreateOffer())); |
| 881 | |
| 882 | auto caller_voice = caller->media_engine()->GetVoiceChannel(0); |
| 883 | ASSERT_TRUE(caller_voice); |
| 884 | const cricket::AudioOptions& audio_options = caller_voice->options(); |
| 885 | EXPECT_EQ(config.combined_audio_video_bwe, |
| 886 | audio_options.combined_audio_video_bwe); |
| 887 | } |
| 888 | |
| 889 | } // namespace webrtc |