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| 1 /* | |
| 2 * Copyright 2012 The WebRTC project authors. All Rights Reserved. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license | |
| 5 * that can be found in the LICENSE file in the root of the source | |
| 6 * tree. An additional intellectual property rights grant can be found | |
| 7 * in the file PATENTS. All contributing project authors may | |
| 8 * be found in the AUTHORS file in the root of the source tree. | |
| 9 */ | |
| 10 | |
| 11 #include "webrtc/api/webrtcsession.h" | |
| 12 | |
| 13 #include <limits.h> | |
| 14 | |
| 15 #include <algorithm> | |
| 16 #include <set> | |
| 17 #include <utility> | |
| 18 #include <vector> | |
| 19 | |
| 20 #include "webrtc/api/call/audio_sink.h" | |
| 21 #include "webrtc/api/jsepicecandidate.h" | |
| 22 #include "webrtc/api/jsepsessiondescription.h" | |
| 23 #include "webrtc/api/peerconnectioninterface.h" | |
| 24 #include "webrtc/api/sctputils.h" | |
| 25 #include "webrtc/api/webrtcsessiondescriptionfactory.h" | |
| 26 #include "webrtc/base/basictypes.h" | |
| 27 #include "webrtc/base/bind.h" | |
| 28 #include "webrtc/base/checks.h" | |
| 29 #include "webrtc/base/helpers.h" | |
| 30 #include "webrtc/base/logging.h" | |
| 31 #include "webrtc/base/stringencode.h" | |
| 32 #include "webrtc/base/stringutils.h" | |
| 33 #include "webrtc/call/call.h" | |
| 34 #include "webrtc/media/base/mediaconstants.h" | |
| 35 #include "webrtc/media/base/videocapturer.h" | |
| 36 #include "webrtc/p2p/base/portallocator.h" | |
| 37 #include "webrtc/p2p/base/transportchannel.h" | |
| 38 #include "webrtc/pc/channel.h" | |
| 39 #include "webrtc/pc/channelmanager.h" | |
| 40 #include "webrtc/pc/mediasession.h" | |
| 41 | |
| 42 #ifdef HAVE_QUIC | |
| 43 #include "webrtc/p2p/quic/quictransportchannel.h" | |
| 44 #endif // HAVE_QUIC | |
| 45 | |
| 46 using cricket::ContentInfo; | |
| 47 using cricket::ContentInfos; | |
| 48 using cricket::MediaContentDescription; | |
| 49 using cricket::SessionDescription; | |
| 50 using cricket::TransportInfo; | |
| 51 | |
| 52 using cricket::LOCAL_PORT_TYPE; | |
| 53 using cricket::STUN_PORT_TYPE; | |
| 54 using cricket::RELAY_PORT_TYPE; | |
| 55 using cricket::PRFLX_PORT_TYPE; | |
| 56 | |
| 57 namespace webrtc { | |
| 58 | |
| 59 // Error messages | |
| 60 const char kBundleWithoutRtcpMux[] = "RTCP-MUX must be enabled when BUNDLE " | |
| 61 "is enabled."; | |
| 62 const char kCreateChannelFailed[] = "Failed to create channels."; | |
| 63 const char kInvalidCandidates[] = "Description contains invalid candidates."; | |
| 64 const char kInvalidSdp[] = "Invalid session description."; | |
| 65 const char kMlineMismatch[] = | |
| 66 "Offer and answer descriptions m-lines are not matching. Rejecting answer."; | |
| 67 const char kPushDownTDFailed[] = | |
| 68 "Failed to push down transport description:"; | |
| 69 const char kSdpWithoutDtlsFingerprint[] = | |
| 70 "Called with SDP without DTLS fingerprint."; | |
| 71 const char kSdpWithoutSdesCrypto[] = | |
| 72 "Called with SDP without SDES crypto."; | |
| 73 const char kSdpWithoutIceUfragPwd[] = | |
| 74 "Called with SDP without ice-ufrag and ice-pwd."; | |
| 75 const char kSessionError[] = "Session error code: "; | |
| 76 const char kSessionErrorDesc[] = "Session error description: "; | |
| 77 const char kDtlsSetupFailureRtp[] = | |
| 78 "Couldn't set up DTLS-SRTP on RTP channel."; | |
| 79 const char kDtlsSetupFailureRtcp[] = | |
| 80 "Couldn't set up DTLS-SRTP on RTCP channel."; | |
| 81 const char kEnableBundleFailed[] = "Failed to enable BUNDLE."; | |
| 82 | |
| 83 IceCandidatePairType GetIceCandidatePairCounter( | |
| 84 const cricket::Candidate& local, | |
| 85 const cricket::Candidate& remote) { | |
| 86 const auto& l = local.type(); | |
| 87 const auto& r = remote.type(); | |
| 88 const auto& host = LOCAL_PORT_TYPE; | |
| 89 const auto& srflx = STUN_PORT_TYPE; | |
| 90 const auto& relay = RELAY_PORT_TYPE; | |
| 91 const auto& prflx = PRFLX_PORT_TYPE; | |
| 92 if (l == host && r == host) { | |
| 93 bool local_private = IPIsPrivate(local.address().ipaddr()); | |
| 94 bool remote_private = IPIsPrivate(remote.address().ipaddr()); | |
| 95 if (local_private) { | |
| 96 if (remote_private) { | |
| 97 return kIceCandidatePairHostPrivateHostPrivate; | |
| 98 } else { | |
| 99 return kIceCandidatePairHostPrivateHostPublic; | |
| 100 } | |
| 101 } else { | |
| 102 if (remote_private) { | |
| 103 return kIceCandidatePairHostPublicHostPrivate; | |
| 104 } else { | |
| 105 return kIceCandidatePairHostPublicHostPublic; | |
| 106 } | |
| 107 } | |
| 108 } | |
| 109 if (l == host && r == srflx) | |
| 110 return kIceCandidatePairHostSrflx; | |
| 111 if (l == host && r == relay) | |
| 112 return kIceCandidatePairHostRelay; | |
| 113 if (l == host && r == prflx) | |
| 114 return kIceCandidatePairHostPrflx; | |
| 115 if (l == srflx && r == host) | |
| 116 return kIceCandidatePairSrflxHost; | |
| 117 if (l == srflx && r == srflx) | |
| 118 return kIceCandidatePairSrflxSrflx; | |
| 119 if (l == srflx && r == relay) | |
| 120 return kIceCandidatePairSrflxRelay; | |
| 121 if (l == srflx && r == prflx) | |
| 122 return kIceCandidatePairSrflxPrflx; | |
| 123 if (l == relay && r == host) | |
| 124 return kIceCandidatePairRelayHost; | |
| 125 if (l == relay && r == srflx) | |
| 126 return kIceCandidatePairRelaySrflx; | |
| 127 if (l == relay && r == relay) | |
| 128 return kIceCandidatePairRelayRelay; | |
| 129 if (l == relay && r == prflx) | |
| 130 return kIceCandidatePairRelayPrflx; | |
| 131 if (l == prflx && r == host) | |
| 132 return kIceCandidatePairPrflxHost; | |
| 133 if (l == prflx && r == srflx) | |
| 134 return kIceCandidatePairPrflxSrflx; | |
| 135 if (l == prflx && r == relay) | |
| 136 return kIceCandidatePairPrflxRelay; | |
| 137 return kIceCandidatePairMax; | |
| 138 } | |
| 139 | |
| 140 // Compares |answer| against |offer|. Comparision is done | |
| 141 // for number of m-lines in answer against offer. If matches true will be | |
| 142 // returned otherwise false. | |
| 143 static bool VerifyMediaDescriptions( | |
| 144 const SessionDescription* answer, const SessionDescription* offer) { | |
| 145 if (offer->contents().size() != answer->contents().size()) | |
| 146 return false; | |
| 147 | |
| 148 for (size_t i = 0; i < offer->contents().size(); ++i) { | |
| 149 if ((offer->contents()[i].name) != answer->contents()[i].name) { | |
| 150 return false; | |
| 151 } | |
| 152 const MediaContentDescription* offer_mdesc = | |
| 153 static_cast<const MediaContentDescription*>( | |
| 154 offer->contents()[i].description); | |
| 155 const MediaContentDescription* answer_mdesc = | |
| 156 static_cast<const MediaContentDescription*>( | |
| 157 answer->contents()[i].description); | |
| 158 if (offer_mdesc->type() != answer_mdesc->type()) { | |
| 159 return false; | |
| 160 } | |
| 161 } | |
| 162 return true; | |
| 163 } | |
| 164 | |
| 165 // Checks that each non-rejected content has SDES crypto keys or a DTLS | |
| 166 // fingerprint. Mismatches, such as replying with a DTLS fingerprint to SDES | |
| 167 // keys, will be caught in Transport negotiation, and backstopped by Channel's | |
| 168 // |secure_required| check. | |
| 169 static bool VerifyCrypto(const SessionDescription* desc, | |
| 170 bool dtls_enabled, | |
| 171 std::string* error) { | |
| 172 const ContentInfos& contents = desc->contents(); | |
| 173 for (size_t index = 0; index < contents.size(); ++index) { | |
| 174 const ContentInfo* cinfo = &contents[index]; | |
| 175 if (cinfo->rejected) { | |
| 176 continue; | |
| 177 } | |
| 178 | |
| 179 // If the content isn't rejected, crypto must be present. | |
| 180 const MediaContentDescription* media = | |
| 181 static_cast<const MediaContentDescription*>(cinfo->description); | |
| 182 const TransportInfo* tinfo = desc->GetTransportInfoByName(cinfo->name); | |
| 183 if (!media || !tinfo) { | |
| 184 // Something is not right. | |
| 185 LOG(LS_ERROR) << kInvalidSdp; | |
| 186 *error = kInvalidSdp; | |
| 187 return false; | |
| 188 } | |
| 189 if (dtls_enabled) { | |
| 190 if (!tinfo->description.identity_fingerprint) { | |
| 191 LOG(LS_WARNING) << | |
| 192 "Session description must have DTLS fingerprint if DTLS enabled."; | |
| 193 *error = kSdpWithoutDtlsFingerprint; | |
| 194 return false; | |
| 195 } | |
| 196 } else { | |
| 197 if (media->cryptos().empty()) { | |
| 198 LOG(LS_WARNING) << | |
| 199 "Session description must have SDES when DTLS disabled."; | |
| 200 *error = kSdpWithoutSdesCrypto; | |
| 201 return false; | |
| 202 } | |
| 203 } | |
| 204 } | |
| 205 | |
| 206 return true; | |
| 207 } | |
| 208 | |
| 209 // Checks that each non-rejected content has ice-ufrag and ice-pwd set. | |
| 210 static bool VerifyIceUfragPwdPresent(const SessionDescription* desc) { | |
| 211 const ContentInfos& contents = desc->contents(); | |
| 212 for (size_t index = 0; index < contents.size(); ++index) { | |
| 213 const ContentInfo* cinfo = &contents[index]; | |
| 214 if (cinfo->rejected) { | |
| 215 continue; | |
| 216 } | |
| 217 | |
| 218 // If the content isn't rejected, ice-ufrag and ice-pwd must be present. | |
| 219 const TransportInfo* tinfo = desc->GetTransportInfoByName(cinfo->name); | |
| 220 if (!tinfo) { | |
| 221 // Something is not right. | |
| 222 LOG(LS_ERROR) << kInvalidSdp; | |
| 223 return false; | |
| 224 } | |
| 225 if (tinfo->description.ice_ufrag.empty() || | |
| 226 tinfo->description.ice_pwd.empty()) { | |
| 227 LOG(LS_ERROR) << "Session description must have ice ufrag and pwd."; | |
| 228 return false; | |
| 229 } | |
| 230 } | |
| 231 return true; | |
| 232 } | |
| 233 | |
| 234 // Forces |sdesc->crypto_required| to the appropriate state based on the | |
| 235 // current security policy, to ensure a failure occurs if there is an error | |
| 236 // in crypto negotiation. | |
| 237 // Called when processing the local session description. | |
| 238 static void UpdateSessionDescriptionSecurePolicy(cricket::CryptoType type, | |
| 239 SessionDescription* sdesc) { | |
| 240 if (!sdesc) { | |
| 241 return; | |
| 242 } | |
| 243 | |
| 244 // Updating the |crypto_required_| in MediaContentDescription to the | |
| 245 // appropriate state based on the current security policy. | |
| 246 for (cricket::ContentInfos::iterator iter = sdesc->contents().begin(); | |
| 247 iter != sdesc->contents().end(); ++iter) { | |
| 248 if (cricket::IsMediaContent(&*iter)) { | |
| 249 MediaContentDescription* mdesc = | |
| 250 static_cast<MediaContentDescription*> (iter->description); | |
| 251 if (mdesc) { | |
| 252 mdesc->set_crypto_required(type); | |
| 253 } | |
| 254 } | |
| 255 } | |
| 256 } | |
| 257 | |
| 258 static bool GetAudioSsrcByTrackId(const SessionDescription* session_description, | |
| 259 const std::string& track_id, | |
| 260 uint32_t* ssrc) { | |
| 261 const cricket::ContentInfo* audio_info = | |
| 262 cricket::GetFirstAudioContent(session_description); | |
| 263 if (!audio_info) { | |
| 264 LOG(LS_ERROR) << "Audio not used in this call"; | |
| 265 return false; | |
| 266 } | |
| 267 | |
| 268 const cricket::MediaContentDescription* audio_content = | |
| 269 static_cast<const cricket::MediaContentDescription*>( | |
| 270 audio_info->description); | |
| 271 const cricket::StreamParams* stream = | |
| 272 cricket::GetStreamByIds(audio_content->streams(), "", track_id); | |
| 273 if (!stream) { | |
| 274 return false; | |
| 275 } | |
| 276 | |
| 277 *ssrc = stream->first_ssrc(); | |
| 278 return true; | |
| 279 } | |
| 280 | |
| 281 static bool GetTrackIdBySsrc(const SessionDescription* session_description, | |
| 282 uint32_t ssrc, | |
| 283 std::string* track_id) { | |
| 284 ASSERT(track_id != NULL); | |
| 285 | |
| 286 const cricket::ContentInfo* audio_info = | |
| 287 cricket::GetFirstAudioContent(session_description); | |
| 288 if (audio_info) { | |
| 289 const cricket::MediaContentDescription* audio_content = | |
| 290 static_cast<const cricket::MediaContentDescription*>( | |
| 291 audio_info->description); | |
| 292 | |
| 293 const auto* found = | |
| 294 cricket::GetStreamBySsrc(audio_content->streams(), ssrc); | |
| 295 if (found) { | |
| 296 *track_id = found->id; | |
| 297 return true; | |
| 298 } | |
| 299 } | |
| 300 | |
| 301 const cricket::ContentInfo* video_info = | |
| 302 cricket::GetFirstVideoContent(session_description); | |
| 303 if (video_info) { | |
| 304 const cricket::MediaContentDescription* video_content = | |
| 305 static_cast<const cricket::MediaContentDescription*>( | |
| 306 video_info->description); | |
| 307 | |
| 308 const auto* found = | |
| 309 cricket::GetStreamBySsrc(video_content->streams(), ssrc); | |
| 310 if (found) { | |
| 311 *track_id = found->id; | |
| 312 return true; | |
| 313 } | |
| 314 } | |
| 315 return false; | |
| 316 } | |
| 317 | |
| 318 static bool BadSdp(const std::string& source, | |
| 319 const std::string& type, | |
| 320 const std::string& reason, | |
| 321 std::string* err_desc) { | |
| 322 std::ostringstream desc; | |
| 323 desc << "Failed to set " << source; | |
| 324 if (!type.empty()) { | |
| 325 desc << " " << type; | |
| 326 } | |
| 327 desc << " sdp: " << reason; | |
| 328 | |
| 329 if (err_desc) { | |
| 330 *err_desc = desc.str(); | |
| 331 } | |
| 332 LOG(LS_ERROR) << desc.str(); | |
| 333 return false; | |
| 334 } | |
| 335 | |
| 336 static bool BadSdp(cricket::ContentSource source, | |
| 337 const std::string& type, | |
| 338 const std::string& reason, | |
| 339 std::string* err_desc) { | |
| 340 if (source == cricket::CS_LOCAL) { | |
| 341 return BadSdp("local", type, reason, err_desc); | |
| 342 } else { | |
| 343 return BadSdp("remote", type, reason, err_desc); | |
| 344 } | |
| 345 } | |
| 346 | |
| 347 static bool BadLocalSdp(const std::string& type, | |
| 348 const std::string& reason, | |
| 349 std::string* err_desc) { | |
| 350 return BadSdp(cricket::CS_LOCAL, type, reason, err_desc); | |
| 351 } | |
| 352 | |
| 353 static bool BadRemoteSdp(const std::string& type, | |
| 354 const std::string& reason, | |
| 355 std::string* err_desc) { | |
| 356 return BadSdp(cricket::CS_REMOTE, type, reason, err_desc); | |
| 357 } | |
| 358 | |
| 359 static bool BadOfferSdp(cricket::ContentSource source, | |
| 360 const std::string& reason, | |
| 361 std::string* err_desc) { | |
| 362 return BadSdp(source, SessionDescriptionInterface::kOffer, reason, err_desc); | |
| 363 } | |
| 364 | |
| 365 static bool BadPranswerSdp(cricket::ContentSource source, | |
| 366 const std::string& reason, | |
| 367 std::string* err_desc) { | |
| 368 return BadSdp(source, SessionDescriptionInterface::kPrAnswer, | |
| 369 reason, err_desc); | |
| 370 } | |
| 371 | |
| 372 static bool BadAnswerSdp(cricket::ContentSource source, | |
| 373 const std::string& reason, | |
| 374 std::string* err_desc) { | |
| 375 return BadSdp(source, SessionDescriptionInterface::kAnswer, reason, err_desc); | |
| 376 } | |
| 377 | |
| 378 #define GET_STRING_OF_STATE(state) \ | |
| 379 case webrtc::WebRtcSession::state: \ | |
| 380 result = #state; \ | |
| 381 break; | |
| 382 | |
| 383 static std::string GetStateString(webrtc::WebRtcSession::State state) { | |
| 384 std::string result; | |
| 385 switch (state) { | |
| 386 GET_STRING_OF_STATE(STATE_INIT) | |
| 387 GET_STRING_OF_STATE(STATE_SENTOFFER) | |
| 388 GET_STRING_OF_STATE(STATE_RECEIVEDOFFER) | |
| 389 GET_STRING_OF_STATE(STATE_SENTPRANSWER) | |
| 390 GET_STRING_OF_STATE(STATE_RECEIVEDPRANSWER) | |
| 391 GET_STRING_OF_STATE(STATE_INPROGRESS) | |
| 392 GET_STRING_OF_STATE(STATE_CLOSED) | |
| 393 default: | |
| 394 ASSERT(false); | |
| 395 break; | |
| 396 } | |
| 397 return result; | |
| 398 } | |
| 399 | |
| 400 #define GET_STRING_OF_ERROR_CODE(err) \ | |
| 401 case webrtc::WebRtcSession::err: \ | |
| 402 result = #err; \ | |
| 403 break; | |
| 404 | |
| 405 static std::string GetErrorCodeString(webrtc::WebRtcSession::Error err) { | |
| 406 std::string result; | |
| 407 switch (err) { | |
| 408 GET_STRING_OF_ERROR_CODE(ERROR_NONE) | |
| 409 GET_STRING_OF_ERROR_CODE(ERROR_CONTENT) | |
| 410 GET_STRING_OF_ERROR_CODE(ERROR_TRANSPORT) | |
| 411 default: | |
| 412 RTC_DCHECK(false); | |
| 413 break; | |
| 414 } | |
| 415 return result; | |
| 416 } | |
| 417 | |
| 418 static std::string MakeErrorString(const std::string& error, | |
| 419 const std::string& desc) { | |
| 420 std::ostringstream ret; | |
| 421 ret << error << " " << desc; | |
| 422 return ret.str(); | |
| 423 } | |
| 424 | |
| 425 static std::string MakeTdErrorString(const std::string& desc) { | |
| 426 return MakeErrorString(kPushDownTDFailed, desc); | |
| 427 } | |
| 428 | |
| 429 // Returns true if |new_desc| requests an ICE restart (i.e., new ufrag/pwd). | |
| 430 bool CheckForRemoteIceRestart(const SessionDescriptionInterface* old_desc, | |
| 431 const SessionDescriptionInterface* new_desc, | |
| 432 const std::string& content_name) { | |
| 433 if (!old_desc) { | |
| 434 return false; | |
| 435 } | |
| 436 const SessionDescription* new_sd = new_desc->description(); | |
| 437 const SessionDescription* old_sd = old_desc->description(); | |
| 438 const ContentInfo* cinfo = new_sd->GetContentByName(content_name); | |
| 439 if (!cinfo || cinfo->rejected) { | |
| 440 return false; | |
| 441 } | |
| 442 // If the content isn't rejected, check if ufrag and password has changed. | |
| 443 const cricket::TransportDescription* new_transport_desc = | |
| 444 new_sd->GetTransportDescriptionByName(content_name); | |
| 445 const cricket::TransportDescription* old_transport_desc = | |
| 446 old_sd->GetTransportDescriptionByName(content_name); | |
| 447 if (!new_transport_desc || !old_transport_desc) { | |
| 448 // No transport description exists. This is not an ICE restart. | |
| 449 return false; | |
| 450 } | |
| 451 if (cricket::IceCredentialsChanged( | |
| 452 old_transport_desc->ice_ufrag, old_transport_desc->ice_pwd, | |
| 453 new_transport_desc->ice_ufrag, new_transport_desc->ice_pwd)) { | |
| 454 LOG(LS_INFO) << "Remote peer requests ICE restart for " << content_name | |
| 455 << "."; | |
| 456 return true; | |
| 457 } | |
| 458 return false; | |
| 459 } | |
| 460 | |
| 461 WebRtcSession::WebRtcSession( | |
| 462 webrtc::MediaControllerInterface* media_controller, | |
| 463 rtc::Thread* network_thread, | |
| 464 rtc::Thread* worker_thread, | |
| 465 rtc::Thread* signaling_thread, | |
| 466 cricket::PortAllocator* port_allocator, | |
| 467 std::unique_ptr<cricket::TransportController> transport_controller) | |
| 468 : network_thread_(network_thread), | |
| 469 worker_thread_(worker_thread), | |
| 470 signaling_thread_(signaling_thread), | |
| 471 // RFC 3264: The numeric value of the session id and version in the | |
| 472 // o line MUST be representable with a "64 bit signed integer". | |
| 473 // Due to this constraint session id |sid_| is max limited to LLONG_MAX. | |
| 474 sid_(rtc::ToString(rtc::CreateRandomId64() & LLONG_MAX)), | |
| 475 transport_controller_(std::move(transport_controller)), | |
| 476 media_controller_(media_controller), | |
| 477 channel_manager_(media_controller_->channel_manager()), | |
| 478 ice_observer_(NULL), | |
| 479 ice_connection_state_(PeerConnectionInterface::kIceConnectionNew), | |
| 480 ice_connection_receiving_(true), | |
| 481 older_version_remote_peer_(false), | |
| 482 dtls_enabled_(false), | |
| 483 data_channel_type_(cricket::DCT_NONE), | |
| 484 metrics_observer_(NULL) { | |
| 485 transport_controller_->SetIceRole(cricket::ICEROLE_CONTROLLED); | |
| 486 transport_controller_->SignalConnectionState.connect( | |
| 487 this, &WebRtcSession::OnTransportControllerConnectionState); | |
| 488 transport_controller_->SignalReceiving.connect( | |
| 489 this, &WebRtcSession::OnTransportControllerReceiving); | |
| 490 transport_controller_->SignalGatheringState.connect( | |
| 491 this, &WebRtcSession::OnTransportControllerGatheringState); | |
| 492 transport_controller_->SignalCandidatesGathered.connect( | |
| 493 this, &WebRtcSession::OnTransportControllerCandidatesGathered); | |
| 494 transport_controller_->SignalCandidatesRemoved.connect( | |
| 495 this, &WebRtcSession::OnTransportControllerCandidatesRemoved); | |
| 496 transport_controller_->SignalDtlsHandshakeError.connect( | |
| 497 this, &WebRtcSession::OnDtlsHandshakeError); | |
| 498 } | |
| 499 | |
| 500 WebRtcSession::~WebRtcSession() { | |
| 501 ASSERT(signaling_thread()->IsCurrent()); | |
| 502 // Destroy video_channel_ first since it may have a pointer to the | |
| 503 // voice_channel_. | |
| 504 if (video_channel_) { | |
| 505 SignalVideoChannelDestroyed(); | |
| 506 channel_manager_->DestroyVideoChannel(video_channel_.release()); | |
| 507 } | |
| 508 if (voice_channel_) { | |
| 509 SignalVoiceChannelDestroyed(); | |
| 510 channel_manager_->DestroyVoiceChannel(voice_channel_.release()); | |
| 511 } | |
| 512 if (data_channel_) { | |
| 513 SignalDataChannelDestroyed(); | |
| 514 channel_manager_->DestroyDataChannel(data_channel_.release()); | |
| 515 } | |
| 516 #ifdef HAVE_QUIC | |
| 517 if (quic_data_transport_) { | |
| 518 quic_data_transport_.reset(); | |
| 519 } | |
| 520 #endif | |
| 521 SignalDestroyed(); | |
| 522 | |
| 523 LOG(LS_INFO) << "Session: " << id() << " is destroyed."; | |
| 524 } | |
| 525 | |
| 526 bool WebRtcSession::Initialize( | |
| 527 const PeerConnectionFactoryInterface::Options& options, | |
| 528 std::unique_ptr<rtc::RTCCertificateGeneratorInterface> cert_generator, | |
| 529 const PeerConnectionInterface::RTCConfiguration& rtc_configuration) { | |
| 530 bundle_policy_ = rtc_configuration.bundle_policy; | |
| 531 rtcp_mux_policy_ = rtc_configuration.rtcp_mux_policy; | |
| 532 transport_controller_->SetSslMaxProtocolVersion(options.ssl_max_version); | |
| 533 | |
| 534 // Obtain a certificate from RTCConfiguration if any were provided (optional). | |
| 535 rtc::scoped_refptr<rtc::RTCCertificate> certificate; | |
| 536 if (!rtc_configuration.certificates.empty()) { | |
| 537 // TODO(hbos,torbjorng): Decide on certificate-selection strategy instead of | |
| 538 // just picking the first one. The decision should be made based on the DTLS | |
| 539 // handshake. The DTLS negotiations need to know about all certificates. | |
| 540 certificate = rtc_configuration.certificates[0]; | |
| 541 } | |
| 542 | |
| 543 SetIceConfig(ParseIceConfig(rtc_configuration)); | |
| 544 | |
| 545 if (options.disable_encryption) { | |
| 546 dtls_enabled_ = false; | |
| 547 } else { | |
| 548 // Enable DTLS by default if we have an identity store or a certificate. | |
| 549 dtls_enabled_ = (cert_generator || certificate); | |
| 550 // |rtc_configuration| can override the default |dtls_enabled_| value. | |
| 551 if (rtc_configuration.enable_dtls_srtp) { | |
| 552 dtls_enabled_ = *(rtc_configuration.enable_dtls_srtp); | |
| 553 } | |
| 554 } | |
| 555 | |
| 556 // Enable creation of RTP data channels if the kEnableRtpDataChannels is set. | |
| 557 // It takes precendence over the disable_sctp_data_channels | |
| 558 // PeerConnectionFactoryInterface::Options. | |
| 559 if (rtc_configuration.enable_rtp_data_channel) { | |
| 560 data_channel_type_ = cricket::DCT_RTP; | |
| 561 } | |
| 562 #ifdef HAVE_QUIC | |
| 563 else if (rtc_configuration.enable_quic) { | |
| 564 // Use QUIC instead of DTLS when |enable_quic| is true. | |
| 565 data_channel_type_ = cricket::DCT_QUIC; | |
| 566 transport_controller_->use_quic(); | |
| 567 if (dtls_enabled_) { | |
| 568 LOG(LS_INFO) << "Using QUIC instead of DTLS"; | |
| 569 } | |
| 570 quic_data_transport_.reset( | |
| 571 new QuicDataTransport(signaling_thread(), worker_thread(), | |
| 572 network_thread(), transport_controller_.get())); | |
| 573 } | |
| 574 #endif // HAVE_QUIC | |
| 575 else { | |
| 576 // DTLS has to be enabled to use SCTP. | |
| 577 if (!options.disable_sctp_data_channels && dtls_enabled_) { | |
| 578 data_channel_type_ = cricket::DCT_SCTP; | |
| 579 } | |
| 580 } | |
| 581 | |
| 582 video_options_.screencast_min_bitrate_kbps = | |
| 583 rtc_configuration.screencast_min_bitrate; | |
| 584 audio_options_.combined_audio_video_bwe = | |
| 585 rtc_configuration.combined_audio_video_bwe; | |
| 586 | |
| 587 audio_options_.audio_jitter_buffer_max_packets = | |
| 588 rtc::Optional<int>(rtc_configuration.audio_jitter_buffer_max_packets); | |
| 589 | |
| 590 audio_options_.audio_jitter_buffer_fast_accelerate = rtc::Optional<bool>( | |
| 591 rtc_configuration.audio_jitter_buffer_fast_accelerate); | |
| 592 | |
| 593 if (!dtls_enabled_) { | |
| 594 // Construct with DTLS disabled. | |
| 595 webrtc_session_desc_factory_.reset(new WebRtcSessionDescriptionFactory( | |
| 596 signaling_thread(), channel_manager_, this, id(), | |
| 597 std::unique_ptr<rtc::RTCCertificateGeneratorInterface>())); | |
| 598 } else { | |
| 599 // Construct with DTLS enabled. | |
| 600 if (!certificate) { | |
| 601 webrtc_session_desc_factory_.reset(new WebRtcSessionDescriptionFactory( | |
| 602 signaling_thread(), channel_manager_, this, id(), | |
| 603 std::move(cert_generator))); | |
| 604 } else { | |
| 605 // Use the already generated certificate. | |
| 606 webrtc_session_desc_factory_.reset(new WebRtcSessionDescriptionFactory( | |
| 607 signaling_thread(), channel_manager_, this, id(), certificate)); | |
| 608 } | |
| 609 } | |
| 610 | |
| 611 webrtc_session_desc_factory_->SignalCertificateReady.connect( | |
| 612 this, &WebRtcSession::OnCertificateReady); | |
| 613 | |
| 614 if (options.disable_encryption) { | |
| 615 webrtc_session_desc_factory_->SetSdesPolicy(cricket::SEC_DISABLED); | |
| 616 } | |
| 617 | |
| 618 return true; | |
| 619 } | |
| 620 | |
| 621 void WebRtcSession::Close() { | |
| 622 SetState(STATE_CLOSED); | |
| 623 RemoveUnusedChannels(nullptr); | |
| 624 ASSERT(!voice_channel_); | |
| 625 ASSERT(!video_channel_); | |
| 626 ASSERT(!data_channel_); | |
| 627 media_controller_->Close(); | |
| 628 } | |
| 629 | |
| 630 cricket::BaseChannel* WebRtcSession::GetChannel( | |
| 631 const std::string& content_name) { | |
| 632 if (voice_channel() && voice_channel()->content_name() == content_name) { | |
| 633 return voice_channel(); | |
| 634 } | |
| 635 if (video_channel() && video_channel()->content_name() == content_name) { | |
| 636 return video_channel(); | |
| 637 } | |
| 638 if (data_channel() && data_channel()->content_name() == content_name) { | |
| 639 return data_channel(); | |
| 640 } | |
| 641 return nullptr; | |
| 642 } | |
| 643 | |
| 644 void WebRtcSession::SetSdesPolicy(cricket::SecurePolicy secure_policy) { | |
| 645 webrtc_session_desc_factory_->SetSdesPolicy(secure_policy); | |
| 646 } | |
| 647 | |
| 648 cricket::SecurePolicy WebRtcSession::SdesPolicy() const { | |
| 649 return webrtc_session_desc_factory_->SdesPolicy(); | |
| 650 } | |
| 651 | |
| 652 bool WebRtcSession::GetSslRole(const std::string& transport_name, | |
| 653 rtc::SSLRole* role) { | |
| 654 if (!local_desc_ || !remote_desc_) { | |
| 655 LOG(LS_INFO) << "Local and Remote descriptions must be applied to get " | |
| 656 << "SSL Role of the session."; | |
| 657 return false; | |
| 658 } | |
| 659 | |
| 660 return transport_controller_->GetSslRole(transport_name, role); | |
| 661 } | |
| 662 | |
| 663 bool WebRtcSession::GetSslRole(const cricket::BaseChannel* channel, | |
| 664 rtc::SSLRole* role) { | |
| 665 return channel && GetSslRole(channel->transport_name(), role); | |
| 666 } | |
| 667 | |
| 668 void WebRtcSession::CreateOffer( | |
| 669 CreateSessionDescriptionObserver* observer, | |
| 670 const PeerConnectionInterface::RTCOfferAnswerOptions& options, | |
| 671 const cricket::MediaSessionOptions& session_options) { | |
| 672 webrtc_session_desc_factory_->CreateOffer(observer, options, session_options); | |
| 673 } | |
| 674 | |
| 675 void WebRtcSession::CreateAnswer( | |
| 676 CreateSessionDescriptionObserver* observer, | |
| 677 const cricket::MediaSessionOptions& session_options) { | |
| 678 webrtc_session_desc_factory_->CreateAnswer(observer, session_options); | |
| 679 } | |
| 680 | |
| 681 bool WebRtcSession::SetLocalDescription(SessionDescriptionInterface* desc, | |
| 682 std::string* err_desc) { | |
| 683 ASSERT(signaling_thread()->IsCurrent()); | |
| 684 | |
| 685 // Takes the ownership of |desc| regardless of the result. | |
| 686 std::unique_ptr<SessionDescriptionInterface> desc_temp(desc); | |
| 687 | |
| 688 // Validate SDP. | |
| 689 if (!ValidateSessionDescription(desc, cricket::CS_LOCAL, err_desc)) { | |
| 690 return false; | |
| 691 } | |
| 692 | |
| 693 // Update the initial_offerer flag if this session is the initial_offerer. | |
| 694 Action action = GetAction(desc->type()); | |
| 695 if (state() == STATE_INIT && action == kOffer) { | |
| 696 initial_offerer_ = true; | |
| 697 transport_controller_->SetIceRole(cricket::ICEROLE_CONTROLLING); | |
| 698 } | |
| 699 | |
| 700 cricket::SecurePolicy sdes_policy = | |
| 701 webrtc_session_desc_factory_->SdesPolicy(); | |
| 702 cricket::CryptoType crypto_required = dtls_enabled_ ? | |
| 703 cricket::CT_DTLS : (sdes_policy == cricket::SEC_REQUIRED ? | |
| 704 cricket::CT_SDES : cricket::CT_NONE); | |
| 705 // Update the MediaContentDescription crypto settings as per the policy set. | |
| 706 UpdateSessionDescriptionSecurePolicy(crypto_required, desc->description()); | |
| 707 | |
| 708 local_desc_.reset(desc_temp.release()); | |
| 709 | |
| 710 // Transport and Media channels will be created only when offer is set. | |
| 711 if (action == kOffer && !CreateChannels(local_desc_->description())) { | |
| 712 // TODO(mallinath) - Handle CreateChannel failure, as new local description | |
| 713 // is applied. Restore back to old description. | |
| 714 return BadLocalSdp(desc->type(), kCreateChannelFailed, err_desc); | |
| 715 } | |
| 716 | |
| 717 // Remove unused channels if MediaContentDescription is rejected. | |
| 718 RemoveUnusedChannels(local_desc_->description()); | |
| 719 | |
| 720 if (!UpdateSessionState(action, cricket::CS_LOCAL, err_desc)) { | |
| 721 return false; | |
| 722 } | |
| 723 | |
| 724 if (remote_desc_) { | |
| 725 // Now that we have a local description, we can push down remote candidates. | |
| 726 UseCandidatesInSessionDescription(remote_desc_.get()); | |
| 727 } | |
| 728 | |
| 729 pending_ice_restarts_.clear(); | |
| 730 | |
| 731 if (error() != ERROR_NONE) { | |
| 732 return BadLocalSdp(desc->type(), GetSessionErrorMsg(), err_desc); | |
| 733 } | |
| 734 return true; | |
| 735 } | |
| 736 | |
| 737 bool WebRtcSession::SetRemoteDescription(SessionDescriptionInterface* desc, | |
| 738 std::string* err_desc) { | |
| 739 ASSERT(signaling_thread()->IsCurrent()); | |
| 740 | |
| 741 // Takes the ownership of |desc| regardless of the result. | |
| 742 std::unique_ptr<SessionDescriptionInterface> desc_temp(desc); | |
| 743 | |
| 744 // Validate SDP. | |
| 745 if (!ValidateSessionDescription(desc, cricket::CS_REMOTE, err_desc)) { | |
| 746 return false; | |
| 747 } | |
| 748 | |
| 749 std::unique_ptr<SessionDescriptionInterface> old_remote_desc( | |
| 750 remote_desc_.release()); | |
| 751 remote_desc_.reset(desc_temp.release()); | |
| 752 | |
| 753 // Transport and Media channels will be created only when offer is set. | |
| 754 Action action = GetAction(desc->type()); | |
| 755 if (action == kOffer && !CreateChannels(desc->description())) { | |
| 756 // TODO(mallinath) - Handle CreateChannel failure, as new local description | |
| 757 // is applied. Restore back to old description. | |
| 758 return BadRemoteSdp(desc->type(), kCreateChannelFailed, err_desc); | |
| 759 } | |
| 760 | |
| 761 // Remove unused channels if MediaContentDescription is rejected. | |
| 762 RemoveUnusedChannels(desc->description()); | |
| 763 | |
| 764 // NOTE: Candidates allocation will be initiated only when SetLocalDescription | |
| 765 // is called. | |
| 766 if (!UpdateSessionState(action, cricket::CS_REMOTE, err_desc)) { | |
| 767 return false; | |
| 768 } | |
| 769 | |
| 770 if (local_desc_ && !UseCandidatesInSessionDescription(desc)) { | |
| 771 return BadRemoteSdp(desc->type(), kInvalidCandidates, err_desc); | |
| 772 } | |
| 773 | |
| 774 if (old_remote_desc) { | |
| 775 for (const cricket::ContentInfo& content : | |
| 776 old_remote_desc->description()->contents()) { | |
| 777 // Check if this new SessionDescription contains new ICE ufrag and | |
| 778 // password that indicates the remote peer requests an ICE restart. | |
| 779 // TODO(deadbeef): When we start storing both the current and pending | |
| 780 // remote description, this should reset pending_ice_restarts and compare | |
| 781 // against the current description. | |
| 782 if (CheckForRemoteIceRestart(old_remote_desc.get(), desc, content.name)) { | |
| 783 if (action == kOffer) { | |
| 784 pending_ice_restarts_.insert(content.name); | |
| 785 } | |
| 786 } else { | |
| 787 // We retain all received candidates only if ICE is not restarted. | |
| 788 // When ICE is restarted, all previous candidates belong to an old | |
| 789 // generation and should not be kept. | |
| 790 // TODO(deadbeef): This goes against the W3C spec which says the remote | |
| 791 // description should only contain candidates from the last set remote | |
| 792 // description plus any candidates added since then. We should remove | |
| 793 // this once we're sure it won't break anything. | |
| 794 WebRtcSessionDescriptionFactory::CopyCandidatesFromSessionDescription( | |
| 795 old_remote_desc.get(), content.name, desc); | |
| 796 } | |
| 797 } | |
| 798 } | |
| 799 | |
| 800 if (error() != ERROR_NONE) { | |
| 801 return BadRemoteSdp(desc->type(), GetSessionErrorMsg(), err_desc); | |
| 802 } | |
| 803 | |
| 804 // Set the the ICE connection state to connecting since the connection may | |
| 805 // become writable with peer reflexive candidates before any remote candidate | |
| 806 // is signaled. | |
| 807 // TODO(pthatcher): This is a short-term solution for crbug/446908. A real fix | |
| 808 // is to have a new signal the indicates a change in checking state from the | |
| 809 // transport and expose a new checking() member from transport that can be | |
| 810 // read to determine the current checking state. The existing SignalConnecting | |
| 811 // actually means "gathering candidates", so cannot be be used here. | |
| 812 if (desc->type() != SessionDescriptionInterface::kOffer && | |
| 813 ice_connection_state_ == PeerConnectionInterface::kIceConnectionNew) { | |
| 814 SetIceConnectionState(PeerConnectionInterface::kIceConnectionChecking); | |
| 815 } | |
| 816 return true; | |
| 817 } | |
| 818 | |
| 819 void WebRtcSession::LogState(State old_state, State new_state) { | |
| 820 LOG(LS_INFO) << "Session:" << id() | |
| 821 << " Old state:" << GetStateString(old_state) | |
| 822 << " New state:" << GetStateString(new_state); | |
| 823 } | |
| 824 | |
| 825 void WebRtcSession::SetState(State state) { | |
| 826 ASSERT(signaling_thread_->IsCurrent()); | |
| 827 if (state != state_) { | |
| 828 LogState(state_, state); | |
| 829 state_ = state; | |
| 830 SignalState(this, state_); | |
| 831 } | |
| 832 } | |
| 833 | |
| 834 void WebRtcSession::SetError(Error error, const std::string& error_desc) { | |
| 835 ASSERT(signaling_thread_->IsCurrent()); | |
| 836 if (error != error_) { | |
| 837 error_ = error; | |
| 838 error_desc_ = error_desc; | |
| 839 } | |
| 840 } | |
| 841 | |
| 842 bool WebRtcSession::UpdateSessionState( | |
| 843 Action action, cricket::ContentSource source, | |
| 844 std::string* err_desc) { | |
| 845 ASSERT(signaling_thread()->IsCurrent()); | |
| 846 | |
| 847 // If there's already a pending error then no state transition should happen. | |
| 848 // But all call-sites should be verifying this before calling us! | |
| 849 ASSERT(error() == ERROR_NONE); | |
| 850 std::string td_err; | |
| 851 if (action == kOffer) { | |
| 852 if (!PushdownTransportDescription(source, cricket::CA_OFFER, &td_err)) { | |
| 853 return BadOfferSdp(source, MakeTdErrorString(td_err), err_desc); | |
| 854 } | |
| 855 SetState(source == cricket::CS_LOCAL ? STATE_SENTOFFER | |
| 856 : STATE_RECEIVEDOFFER); | |
| 857 if (!PushdownMediaDescription(cricket::CA_OFFER, source, err_desc)) { | |
| 858 SetError(ERROR_CONTENT, *err_desc); | |
| 859 } | |
| 860 if (error() != ERROR_NONE) { | |
| 861 return BadOfferSdp(source, GetSessionErrorMsg(), err_desc); | |
| 862 } | |
| 863 } else if (action == kPrAnswer) { | |
| 864 if (!PushdownTransportDescription(source, cricket::CA_PRANSWER, &td_err)) { | |
| 865 return BadPranswerSdp(source, MakeTdErrorString(td_err), err_desc); | |
| 866 } | |
| 867 EnableChannels(); | |
| 868 SetState(source == cricket::CS_LOCAL ? STATE_SENTPRANSWER | |
| 869 : STATE_RECEIVEDPRANSWER); | |
| 870 if (!PushdownMediaDescription(cricket::CA_PRANSWER, source, err_desc)) { | |
| 871 SetError(ERROR_CONTENT, *err_desc); | |
| 872 } | |
| 873 if (error() != ERROR_NONE) { | |
| 874 return BadPranswerSdp(source, GetSessionErrorMsg(), err_desc); | |
| 875 } | |
| 876 } else if (action == kAnswer) { | |
| 877 const cricket::ContentGroup* local_bundle = | |
| 878 local_desc_->description()->GetGroupByName(cricket::GROUP_TYPE_BUNDLE); | |
| 879 const cricket::ContentGroup* remote_bundle = | |
| 880 remote_desc_->description()->GetGroupByName(cricket::GROUP_TYPE_BUNDLE); | |
| 881 if (local_bundle && remote_bundle) { | |
| 882 // The answerer decides the transport to bundle on. | |
| 883 const cricket::ContentGroup* answer_bundle = | |
| 884 (source == cricket::CS_LOCAL ? local_bundle : remote_bundle); | |
| 885 if (!EnableBundle(*answer_bundle)) { | |
| 886 LOG(LS_WARNING) << "Failed to enable BUNDLE."; | |
| 887 return BadAnswerSdp(source, kEnableBundleFailed, err_desc); | |
| 888 } | |
| 889 } | |
| 890 // Only push down the transport description after enabling BUNDLE; we don't | |
| 891 // want to push down a description on a transport about to be destroyed. | |
| 892 if (!PushdownTransportDescription(source, cricket::CA_ANSWER, &td_err)) { | |
| 893 return BadAnswerSdp(source, MakeTdErrorString(td_err), err_desc); | |
| 894 } | |
| 895 EnableChannels(); | |
| 896 SetState(STATE_INPROGRESS); | |
| 897 if (!PushdownMediaDescription(cricket::CA_ANSWER, source, err_desc)) { | |
| 898 SetError(ERROR_CONTENT, *err_desc); | |
| 899 } | |
| 900 if (error() != ERROR_NONE) { | |
| 901 return BadAnswerSdp(source, GetSessionErrorMsg(), err_desc); | |
| 902 } | |
| 903 } | |
| 904 return true; | |
| 905 } | |
| 906 | |
| 907 WebRtcSession::Action WebRtcSession::GetAction(const std::string& type) { | |
| 908 if (type == SessionDescriptionInterface::kOffer) { | |
| 909 return WebRtcSession::kOffer; | |
| 910 } else if (type == SessionDescriptionInterface::kPrAnswer) { | |
| 911 return WebRtcSession::kPrAnswer; | |
| 912 } else if (type == SessionDescriptionInterface::kAnswer) { | |
| 913 return WebRtcSession::kAnswer; | |
| 914 } | |
| 915 ASSERT(false && "unknown action type"); | |
| 916 return WebRtcSession::kOffer; | |
| 917 } | |
| 918 | |
| 919 bool WebRtcSession::PushdownMediaDescription( | |
| 920 cricket::ContentAction action, | |
| 921 cricket::ContentSource source, | |
| 922 std::string* err) { | |
| 923 auto set_content = [this, action, source, err](cricket::BaseChannel* ch) { | |
| 924 if (!ch) { | |
| 925 return true; | |
| 926 } else if (source == cricket::CS_LOCAL) { | |
| 927 return ch->PushdownLocalDescription(local_desc_->description(), action, | |
| 928 err); | |
| 929 } else { | |
| 930 return ch->PushdownRemoteDescription(remote_desc_->description(), action, | |
| 931 err); | |
| 932 } | |
| 933 }; | |
| 934 | |
| 935 return (set_content(voice_channel()) && | |
| 936 set_content(video_channel()) && | |
| 937 set_content(data_channel())); | |
| 938 } | |
| 939 | |
| 940 bool WebRtcSession::PushdownTransportDescription(cricket::ContentSource source, | |
| 941 cricket::ContentAction action, | |
| 942 std::string* error_desc) { | |
| 943 RTC_DCHECK(signaling_thread()->IsCurrent()); | |
| 944 | |
| 945 if (source == cricket::CS_LOCAL) { | |
| 946 return PushdownLocalTransportDescription(local_desc_->description(), action, | |
| 947 error_desc); | |
| 948 } | |
| 949 return PushdownRemoteTransportDescription(remote_desc_->description(), action, | |
| 950 error_desc); | |
| 951 } | |
| 952 | |
| 953 bool WebRtcSession::PushdownLocalTransportDescription( | |
| 954 const SessionDescription* sdesc, | |
| 955 cricket::ContentAction action, | |
| 956 std::string* err) { | |
| 957 RTC_DCHECK(signaling_thread()->IsCurrent()); | |
| 958 | |
| 959 if (!sdesc) { | |
| 960 return false; | |
| 961 } | |
| 962 | |
| 963 for (const TransportInfo& tinfo : sdesc->transport_infos()) { | |
| 964 if (!transport_controller_->SetLocalTransportDescription( | |
| 965 tinfo.content_name, tinfo.description, action, err)) { | |
| 966 return false; | |
| 967 } | |
| 968 } | |
| 969 | |
| 970 return true; | |
| 971 } | |
| 972 | |
| 973 bool WebRtcSession::PushdownRemoteTransportDescription( | |
| 974 const SessionDescription* sdesc, | |
| 975 cricket::ContentAction action, | |
| 976 std::string* err) { | |
| 977 RTC_DCHECK(signaling_thread()->IsCurrent()); | |
| 978 | |
| 979 if (!sdesc) { | |
| 980 return false; | |
| 981 } | |
| 982 | |
| 983 for (const TransportInfo& tinfo : sdesc->transport_infos()) { | |
| 984 if (!transport_controller_->SetRemoteTransportDescription( | |
| 985 tinfo.content_name, tinfo.description, action, err)) { | |
| 986 return false; | |
| 987 } | |
| 988 } | |
| 989 | |
| 990 return true; | |
| 991 } | |
| 992 | |
| 993 bool WebRtcSession::GetTransportDescription( | |
| 994 const SessionDescription* description, | |
| 995 const std::string& content_name, | |
| 996 cricket::TransportDescription* tdesc) { | |
| 997 if (!description || !tdesc) { | |
| 998 return false; | |
| 999 } | |
| 1000 const TransportInfo* transport_info = | |
| 1001 description->GetTransportInfoByName(content_name); | |
| 1002 if (!transport_info) { | |
| 1003 return false; | |
| 1004 } | |
| 1005 *tdesc = transport_info->description; | |
| 1006 return true; | |
| 1007 } | |
| 1008 | |
| 1009 bool WebRtcSession::GetTransportStats(SessionStats* stats) { | |
| 1010 ASSERT(signaling_thread()->IsCurrent()); | |
| 1011 return (GetChannelTransportStats(voice_channel(), stats) && | |
| 1012 GetChannelTransportStats(video_channel(), stats) && | |
| 1013 GetChannelTransportStats(data_channel(), stats)); | |
| 1014 } | |
| 1015 | |
| 1016 bool WebRtcSession::GetChannelTransportStats(cricket::BaseChannel* ch, | |
| 1017 SessionStats* stats) { | |
| 1018 ASSERT(signaling_thread()->IsCurrent()); | |
| 1019 if (!ch) { | |
| 1020 // Not using this channel. | |
| 1021 return true; | |
| 1022 } | |
| 1023 | |
| 1024 const std::string& content_name = ch->content_name(); | |
| 1025 const std::string& transport_name = ch->transport_name(); | |
| 1026 stats->proxy_to_transport[content_name] = transport_name; | |
| 1027 if (stats->transport_stats.find(transport_name) != | |
| 1028 stats->transport_stats.end()) { | |
| 1029 // Transport stats already done for this transport. | |
| 1030 return true; | |
| 1031 } | |
| 1032 | |
| 1033 cricket::TransportStats tstats; | |
| 1034 if (!transport_controller_->GetStats(transport_name, &tstats)) { | |
| 1035 return false; | |
| 1036 } | |
| 1037 | |
| 1038 stats->transport_stats[transport_name] = tstats; | |
| 1039 return true; | |
| 1040 } | |
| 1041 | |
| 1042 bool WebRtcSession::GetLocalCertificate( | |
| 1043 const std::string& transport_name, | |
| 1044 rtc::scoped_refptr<rtc::RTCCertificate>* certificate) { | |
| 1045 ASSERT(signaling_thread()->IsCurrent()); | |
| 1046 return transport_controller_->GetLocalCertificate(transport_name, | |
| 1047 certificate); | |
| 1048 } | |
| 1049 | |
| 1050 std::unique_ptr<rtc::SSLCertificate> WebRtcSession::GetRemoteSSLCertificate( | |
| 1051 const std::string& transport_name) { | |
| 1052 ASSERT(signaling_thread()->IsCurrent()); | |
| 1053 return transport_controller_->GetRemoteSSLCertificate(transport_name); | |
| 1054 } | |
| 1055 | |
| 1056 bool WebRtcSession::EnableBundle(const cricket::ContentGroup& bundle) { | |
| 1057 const std::string* first_content_name = bundle.FirstContentName(); | |
| 1058 if (!first_content_name) { | |
| 1059 LOG(LS_WARNING) << "Tried to BUNDLE with no contents."; | |
| 1060 return false; | |
| 1061 } | |
| 1062 const std::string& transport_name = *first_content_name; | |
| 1063 cricket::BaseChannel* first_channel = GetChannel(transport_name); | |
| 1064 | |
| 1065 #ifdef HAVE_QUIC | |
| 1066 if (quic_data_transport_ && | |
| 1067 bundle.HasContentName(quic_data_transport_->content_name()) && | |
| 1068 quic_data_transport_->transport_name() != transport_name) { | |
| 1069 LOG(LS_ERROR) << "Unable to BUNDLE " << quic_data_transport_->content_name() | |
| 1070 << " on " << transport_name << "with QUIC."; | |
| 1071 } | |
| 1072 #endif | |
| 1073 | |
| 1074 auto maybe_set_transport = [this, bundle, transport_name, | |
| 1075 first_channel](cricket::BaseChannel* ch) { | |
| 1076 if (!ch || !bundle.HasContentName(ch->content_name())) { | |
| 1077 return true; | |
| 1078 } | |
| 1079 | |
| 1080 if (ch->transport_name() == transport_name) { | |
| 1081 LOG(LS_INFO) << "BUNDLE already enabled for " << ch->content_name() | |
| 1082 << " on " << transport_name << "."; | |
| 1083 return true; | |
| 1084 } | |
| 1085 | |
| 1086 if (!ch->SetTransport(transport_name)) { | |
| 1087 LOG(LS_WARNING) << "Failed to enable BUNDLE for " << ch->content_name(); | |
| 1088 return false; | |
| 1089 } | |
| 1090 LOG(LS_INFO) << "Enabled BUNDLE for " << ch->content_name() << " on " | |
| 1091 << transport_name << "."; | |
| 1092 return true; | |
| 1093 }; | |
| 1094 | |
| 1095 if (!maybe_set_transport(voice_channel()) || | |
| 1096 !maybe_set_transport(video_channel()) || | |
| 1097 !maybe_set_transport(data_channel())) { | |
| 1098 return false; | |
| 1099 } | |
| 1100 | |
| 1101 return true; | |
| 1102 } | |
| 1103 | |
| 1104 bool WebRtcSession::ProcessIceMessage(const IceCandidateInterface* candidate) { | |
| 1105 if (!remote_desc_) { | |
| 1106 LOG(LS_ERROR) << "ProcessIceMessage: ICE candidates can't be added " | |
| 1107 << "without any remote session description."; | |
| 1108 return false; | |
| 1109 } | |
| 1110 | |
| 1111 if (!candidate) { | |
| 1112 LOG(LS_ERROR) << "ProcessIceMessage: Candidate is NULL."; | |
| 1113 return false; | |
| 1114 } | |
| 1115 | |
| 1116 bool valid = false; | |
| 1117 bool ready = ReadyToUseRemoteCandidate(candidate, NULL, &valid); | |
| 1118 if (!valid) { | |
| 1119 return false; | |
| 1120 } | |
| 1121 | |
| 1122 // Add this candidate to the remote session description. | |
| 1123 if (!remote_desc_->AddCandidate(candidate)) { | |
| 1124 LOG(LS_ERROR) << "ProcessIceMessage: Candidate cannot be used."; | |
| 1125 return false; | |
| 1126 } | |
| 1127 | |
| 1128 if (ready) { | |
| 1129 return UseCandidate(candidate); | |
| 1130 } else { | |
| 1131 LOG(LS_INFO) << "ProcessIceMessage: Not ready to use candidate."; | |
| 1132 return true; | |
| 1133 } | |
| 1134 } | |
| 1135 | |
| 1136 bool WebRtcSession::RemoveRemoteIceCandidates( | |
| 1137 const std::vector<cricket::Candidate>& candidates) { | |
| 1138 if (!remote_desc_) { | |
| 1139 LOG(LS_ERROR) << "RemoveRemoteIceCandidates: ICE candidates can't be " | |
| 1140 << "removed without any remote session description."; | |
| 1141 return false; | |
| 1142 } | |
| 1143 | |
| 1144 if (candidates.empty()) { | |
| 1145 LOG(LS_ERROR) << "RemoveRemoteIceCandidates: candidates are empty."; | |
| 1146 return false; | |
| 1147 } | |
| 1148 | |
| 1149 size_t number_removed = remote_desc_->RemoveCandidates(candidates); | |
| 1150 if (number_removed != candidates.size()) { | |
| 1151 LOG(LS_ERROR) << "RemoveRemoteIceCandidates: Failed to remove candidates. " | |
| 1152 << "Requested " << candidates.size() << " but only " | |
| 1153 << number_removed << " are removed."; | |
| 1154 } | |
| 1155 | |
| 1156 // Remove the candidates from the transport controller. | |
| 1157 std::string error; | |
| 1158 bool res = transport_controller_->RemoveRemoteCandidates(candidates, &error); | |
| 1159 if (!res && !error.empty()) { | |
| 1160 LOG(LS_ERROR) << "Error when removing remote candidates: " << error; | |
| 1161 } | |
| 1162 return true; | |
| 1163 } | |
| 1164 | |
| 1165 cricket::IceConfig WebRtcSession::ParseIceConfig( | |
| 1166 const PeerConnectionInterface::RTCConfiguration& config) const { | |
| 1167 cricket::ContinualGatheringPolicy gathering_policy; | |
| 1168 // TODO(honghaiz): Add the third continual gathering policy in | |
| 1169 // PeerConnectionInterface and map it to GATHER_CONTINUALLY_AND_RECOVER. | |
| 1170 switch (config.continual_gathering_policy) { | |
| 1171 case PeerConnectionInterface::GATHER_ONCE: | |
| 1172 gathering_policy = cricket::GATHER_ONCE; | |
| 1173 break; | |
| 1174 case PeerConnectionInterface::GATHER_CONTINUALLY: | |
| 1175 gathering_policy = cricket::GATHER_CONTINUALLY; | |
| 1176 break; | |
| 1177 default: | |
| 1178 RTC_DCHECK(false); | |
| 1179 gathering_policy = cricket::GATHER_ONCE; | |
| 1180 } | |
| 1181 cricket::IceConfig ice_config; | |
| 1182 ice_config.receiving_timeout = config.ice_connection_receiving_timeout; | |
| 1183 ice_config.prioritize_most_likely_candidate_pairs = | |
| 1184 config.prioritize_most_likely_ice_candidate_pairs; | |
| 1185 ice_config.backup_connection_ping_interval = | |
| 1186 config.ice_backup_candidate_pair_ping_interval; | |
| 1187 ice_config.continual_gathering_policy = gathering_policy; | |
| 1188 ice_config.presume_writable_when_fully_relayed = | |
| 1189 config.presume_writable_when_fully_relayed; | |
| 1190 return ice_config; | |
| 1191 } | |
| 1192 | |
| 1193 void WebRtcSession::SetIceConfig(const cricket::IceConfig& config) { | |
| 1194 transport_controller_->SetIceConfig(config); | |
| 1195 } | |
| 1196 | |
| 1197 void WebRtcSession::MaybeStartGathering() { | |
| 1198 transport_controller_->MaybeStartGathering(); | |
| 1199 } | |
| 1200 | |
| 1201 bool WebRtcSession::GetLocalTrackIdBySsrc(uint32_t ssrc, | |
| 1202 std::string* track_id) { | |
| 1203 if (!local_desc_) { | |
| 1204 return false; | |
| 1205 } | |
| 1206 return webrtc::GetTrackIdBySsrc(local_desc_->description(), ssrc, track_id); | |
| 1207 } | |
| 1208 | |
| 1209 bool WebRtcSession::GetRemoteTrackIdBySsrc(uint32_t ssrc, | |
| 1210 std::string* track_id) { | |
| 1211 if (!remote_desc_) { | |
| 1212 return false; | |
| 1213 } | |
| 1214 return webrtc::GetTrackIdBySsrc(remote_desc_->description(), ssrc, track_id); | |
| 1215 } | |
| 1216 | |
| 1217 std::string WebRtcSession::BadStateErrMsg(State state) { | |
| 1218 std::ostringstream desc; | |
| 1219 desc << "Called in wrong state: " << GetStateString(state); | |
| 1220 return desc.str(); | |
| 1221 } | |
| 1222 | |
| 1223 bool WebRtcSession::CanInsertDtmf(const std::string& track_id) { | |
| 1224 ASSERT(signaling_thread()->IsCurrent()); | |
| 1225 if (!voice_channel_) { | |
| 1226 LOG(LS_ERROR) << "CanInsertDtmf: No audio channel exists."; | |
| 1227 return false; | |
| 1228 } | |
| 1229 uint32_t send_ssrc = 0; | |
| 1230 // The Dtmf is negotiated per channel not ssrc, so we only check if the ssrc | |
| 1231 // exists. | |
| 1232 if (!local_desc_ || | |
| 1233 !GetAudioSsrcByTrackId(local_desc_->description(), track_id, | |
| 1234 &send_ssrc)) { | |
| 1235 LOG(LS_ERROR) << "CanInsertDtmf: Track does not exist: " << track_id; | |
| 1236 return false; | |
| 1237 } | |
| 1238 return voice_channel_->CanInsertDtmf(); | |
| 1239 } | |
| 1240 | |
| 1241 bool WebRtcSession::InsertDtmf(const std::string& track_id, | |
| 1242 int code, int duration) { | |
| 1243 ASSERT(signaling_thread()->IsCurrent()); | |
| 1244 if (!voice_channel_) { | |
| 1245 LOG(LS_ERROR) << "InsertDtmf: No audio channel exists."; | |
| 1246 return false; | |
| 1247 } | |
| 1248 uint32_t send_ssrc = 0; | |
| 1249 if (!VERIFY(local_desc_ && GetAudioSsrcByTrackId(local_desc_->description(), | |
| 1250 track_id, &send_ssrc))) { | |
| 1251 LOG(LS_ERROR) << "InsertDtmf: Track does not exist: " << track_id; | |
| 1252 return false; | |
| 1253 } | |
| 1254 if (!voice_channel_->InsertDtmf(send_ssrc, code, duration)) { | |
| 1255 LOG(LS_ERROR) << "Failed to insert DTMF to channel."; | |
| 1256 return false; | |
| 1257 } | |
| 1258 return true; | |
| 1259 } | |
| 1260 | |
| 1261 sigslot::signal0<>* WebRtcSession::GetOnDestroyedSignal() { | |
| 1262 return &SignalDestroyed; | |
| 1263 } | |
| 1264 | |
| 1265 bool WebRtcSession::SendData(const cricket::SendDataParams& params, | |
| 1266 const rtc::CopyOnWriteBuffer& payload, | |
| 1267 cricket::SendDataResult* result) { | |
| 1268 if (!data_channel_) { | |
| 1269 LOG(LS_ERROR) << "SendData called when data_channel_ is NULL."; | |
| 1270 return false; | |
| 1271 } | |
| 1272 return data_channel_->SendData(params, payload, result); | |
| 1273 } | |
| 1274 | |
| 1275 bool WebRtcSession::ConnectDataChannel(DataChannel* webrtc_data_channel) { | |
| 1276 if (!data_channel_) { | |
| 1277 // Don't log an error here, because DataChannels are expected to call | |
| 1278 // ConnectDataChannel in this state. It's the only way to initially tell | |
| 1279 // whether or not the underlying transport is ready. | |
| 1280 return false; | |
| 1281 } | |
| 1282 data_channel_->SignalReadyToSendData.connect(webrtc_data_channel, | |
| 1283 &DataChannel::OnChannelReady); | |
| 1284 data_channel_->SignalDataReceived.connect(webrtc_data_channel, | |
| 1285 &DataChannel::OnDataReceived); | |
| 1286 data_channel_->SignalStreamClosedRemotely.connect( | |
| 1287 webrtc_data_channel, &DataChannel::OnStreamClosedRemotely); | |
| 1288 return true; | |
| 1289 } | |
| 1290 | |
| 1291 void WebRtcSession::DisconnectDataChannel(DataChannel* webrtc_data_channel) { | |
| 1292 if (!data_channel_) { | |
| 1293 LOG(LS_ERROR) << "DisconnectDataChannel called when data_channel_ is NULL."; | |
| 1294 return; | |
| 1295 } | |
| 1296 data_channel_->SignalReadyToSendData.disconnect(webrtc_data_channel); | |
| 1297 data_channel_->SignalDataReceived.disconnect(webrtc_data_channel); | |
| 1298 data_channel_->SignalStreamClosedRemotely.disconnect(webrtc_data_channel); | |
| 1299 } | |
| 1300 | |
| 1301 void WebRtcSession::AddSctpDataStream(int sid) { | |
| 1302 if (!data_channel_) { | |
| 1303 LOG(LS_ERROR) << "AddDataChannelStreams called when data_channel_ is NULL."; | |
| 1304 return; | |
| 1305 } | |
| 1306 data_channel_->AddRecvStream(cricket::StreamParams::CreateLegacy(sid)); | |
| 1307 data_channel_->AddSendStream(cricket::StreamParams::CreateLegacy(sid)); | |
| 1308 } | |
| 1309 | |
| 1310 void WebRtcSession::RemoveSctpDataStream(int sid) { | |
| 1311 if (!data_channel_) { | |
| 1312 LOG(LS_ERROR) << "RemoveDataChannelStreams called when data_channel_ is " | |
| 1313 << "NULL."; | |
| 1314 return; | |
| 1315 } | |
| 1316 data_channel_->RemoveRecvStream(sid); | |
| 1317 data_channel_->RemoveSendStream(sid); | |
| 1318 } | |
| 1319 | |
| 1320 bool WebRtcSession::ReadyToSendData() const { | |
| 1321 return data_channel_ && data_channel_->ready_to_send_data(); | |
| 1322 } | |
| 1323 | |
| 1324 cricket::DataChannelType WebRtcSession::data_channel_type() const { | |
| 1325 return data_channel_type_; | |
| 1326 } | |
| 1327 | |
| 1328 bool WebRtcSession::IceRestartPending(const std::string& content_name) const { | |
| 1329 return pending_ice_restarts_.find(content_name) != | |
| 1330 pending_ice_restarts_.end(); | |
| 1331 } | |
| 1332 | |
| 1333 void WebRtcSession::OnCertificateReady( | |
| 1334 const rtc::scoped_refptr<rtc::RTCCertificate>& certificate) { | |
| 1335 transport_controller_->SetLocalCertificate(certificate); | |
| 1336 } | |
| 1337 | |
| 1338 bool WebRtcSession::waiting_for_certificate_for_testing() const { | |
| 1339 return webrtc_session_desc_factory_->waiting_for_certificate_for_testing(); | |
| 1340 } | |
| 1341 | |
| 1342 const rtc::scoped_refptr<rtc::RTCCertificate>& | |
| 1343 WebRtcSession::certificate_for_testing() { | |
| 1344 return transport_controller_->certificate_for_testing(); | |
| 1345 } | |
| 1346 | |
| 1347 void WebRtcSession::SetIceConnectionState( | |
| 1348 PeerConnectionInterface::IceConnectionState state) { | |
| 1349 if (ice_connection_state_ == state) { | |
| 1350 return; | |
| 1351 } | |
| 1352 | |
| 1353 LOG(LS_INFO) << "Changing IceConnectionState " << ice_connection_state_ | |
| 1354 << " => " << state; | |
| 1355 RTC_DCHECK(ice_connection_state_ != | |
| 1356 PeerConnectionInterface::kIceConnectionClosed); | |
| 1357 ice_connection_state_ = state; | |
| 1358 if (ice_observer_) { | |
| 1359 ice_observer_->OnIceConnectionChange(ice_connection_state_); | |
| 1360 } | |
| 1361 } | |
| 1362 | |
| 1363 void WebRtcSession::OnTransportControllerConnectionState( | |
| 1364 cricket::IceConnectionState state) { | |
| 1365 switch (state) { | |
| 1366 case cricket::kIceConnectionConnecting: | |
| 1367 // If the current state is Connected or Completed, then there were | |
| 1368 // writable channels but now there are not, so the next state must | |
| 1369 // be Disconnected. | |
| 1370 // kIceConnectionConnecting is currently used as the default, | |
| 1371 // un-connected state by the TransportController, so its only use is | |
| 1372 // detecting disconnections. | |
| 1373 if (ice_connection_state_ == | |
| 1374 PeerConnectionInterface::kIceConnectionConnected || | |
| 1375 ice_connection_state_ == | |
| 1376 PeerConnectionInterface::kIceConnectionCompleted) { | |
| 1377 SetIceConnectionState( | |
| 1378 PeerConnectionInterface::kIceConnectionDisconnected); | |
| 1379 } | |
| 1380 break; | |
| 1381 case cricket::kIceConnectionFailed: | |
| 1382 SetIceConnectionState(PeerConnectionInterface::kIceConnectionFailed); | |
| 1383 break; | |
| 1384 case cricket::kIceConnectionConnected: | |
| 1385 LOG(LS_INFO) << "Changing to ICE connected state because " | |
| 1386 << "all transports are writable."; | |
| 1387 SetIceConnectionState(PeerConnectionInterface::kIceConnectionConnected); | |
| 1388 break; | |
| 1389 case cricket::kIceConnectionCompleted: | |
| 1390 LOG(LS_INFO) << "Changing to ICE completed state because " | |
| 1391 << "all transports are complete."; | |
| 1392 if (ice_connection_state_ != | |
| 1393 PeerConnectionInterface::kIceConnectionConnected) { | |
| 1394 // If jumping directly from "checking" to "connected", | |
| 1395 // signal "connected" first. | |
| 1396 SetIceConnectionState(PeerConnectionInterface::kIceConnectionConnected); | |
| 1397 } | |
| 1398 SetIceConnectionState(PeerConnectionInterface::kIceConnectionCompleted); | |
| 1399 if (metrics_observer_) { | |
| 1400 ReportTransportStats(); | |
| 1401 } | |
| 1402 break; | |
| 1403 default: | |
| 1404 ASSERT(false); | |
| 1405 } | |
| 1406 } | |
| 1407 | |
| 1408 void WebRtcSession::OnTransportControllerReceiving(bool receiving) { | |
| 1409 SetIceConnectionReceiving(receiving); | |
| 1410 } | |
| 1411 | |
| 1412 void WebRtcSession::SetIceConnectionReceiving(bool receiving) { | |
| 1413 if (ice_connection_receiving_ == receiving) { | |
| 1414 return; | |
| 1415 } | |
| 1416 ice_connection_receiving_ = receiving; | |
| 1417 if (ice_observer_) { | |
| 1418 ice_observer_->OnIceConnectionReceivingChange(receiving); | |
| 1419 } | |
| 1420 } | |
| 1421 | |
| 1422 void WebRtcSession::OnTransportControllerCandidatesGathered( | |
| 1423 const std::string& transport_name, | |
| 1424 const cricket::Candidates& candidates) { | |
| 1425 ASSERT(signaling_thread()->IsCurrent()); | |
| 1426 int sdp_mline_index; | |
| 1427 if (!GetLocalCandidateMediaIndex(transport_name, &sdp_mline_index)) { | |
| 1428 LOG(LS_ERROR) << "OnTransportControllerCandidatesGathered: content name " | |
| 1429 << transport_name << " not found"; | |
| 1430 return; | |
| 1431 } | |
| 1432 | |
| 1433 for (cricket::Candidates::const_iterator citer = candidates.begin(); | |
| 1434 citer != candidates.end(); ++citer) { | |
| 1435 // Use transport_name as the candidate media id. | |
| 1436 JsepIceCandidate candidate(transport_name, sdp_mline_index, *citer); | |
| 1437 if (ice_observer_) { | |
| 1438 ice_observer_->OnIceCandidate(&candidate); | |
| 1439 } | |
| 1440 if (local_desc_) { | |
| 1441 local_desc_->AddCandidate(&candidate); | |
| 1442 } | |
| 1443 } | |
| 1444 } | |
| 1445 | |
| 1446 void WebRtcSession::OnTransportControllerCandidatesRemoved( | |
| 1447 const std::vector<cricket::Candidate>& candidates) { | |
| 1448 ASSERT(signaling_thread()->IsCurrent()); | |
| 1449 // Sanity check. | |
| 1450 for (const cricket::Candidate& candidate : candidates) { | |
| 1451 if (candidate.transport_name().empty()) { | |
| 1452 LOG(LS_ERROR) << "OnTransportControllerCandidatesRemoved: " | |
| 1453 << "empty content name in candidate " | |
| 1454 << candidate.ToString(); | |
| 1455 return; | |
| 1456 } | |
| 1457 } | |
| 1458 | |
| 1459 if (local_desc_) { | |
| 1460 local_desc_->RemoveCandidates(candidates); | |
| 1461 } | |
| 1462 if (ice_observer_) { | |
| 1463 ice_observer_->OnIceCandidatesRemoved(candidates); | |
| 1464 } | |
| 1465 } | |
| 1466 | |
| 1467 // Enabling voice and video channel. | |
| 1468 void WebRtcSession::EnableChannels() { | |
| 1469 if (voice_channel_ && !voice_channel_->enabled()) | |
| 1470 voice_channel_->Enable(true); | |
| 1471 | |
| 1472 if (video_channel_ && !video_channel_->enabled()) | |
| 1473 video_channel_->Enable(true); | |
| 1474 | |
| 1475 if (data_channel_ && !data_channel_->enabled()) | |
| 1476 data_channel_->Enable(true); | |
| 1477 } | |
| 1478 | |
| 1479 // Returns the media index for a local ice candidate given the content name. | |
| 1480 bool WebRtcSession::GetLocalCandidateMediaIndex(const std::string& content_name, | |
| 1481 int* sdp_mline_index) { | |
| 1482 if (!local_desc_ || !sdp_mline_index) { | |
| 1483 return false; | |
| 1484 } | |
| 1485 | |
| 1486 bool content_found = false; | |
| 1487 const ContentInfos& contents = local_desc_->description()->contents(); | |
| 1488 for (size_t index = 0; index < contents.size(); ++index) { | |
| 1489 if (contents[index].name == content_name) { | |
| 1490 *sdp_mline_index = static_cast<int>(index); | |
| 1491 content_found = true; | |
| 1492 break; | |
| 1493 } | |
| 1494 } | |
| 1495 return content_found; | |
| 1496 } | |
| 1497 | |
| 1498 bool WebRtcSession::UseCandidatesInSessionDescription( | |
| 1499 const SessionDescriptionInterface* remote_desc) { | |
| 1500 if (!remote_desc) { | |
| 1501 return true; | |
| 1502 } | |
| 1503 bool ret = true; | |
| 1504 | |
| 1505 for (size_t m = 0; m < remote_desc->number_of_mediasections(); ++m) { | |
| 1506 const IceCandidateCollection* candidates = remote_desc->candidates(m); | |
| 1507 for (size_t n = 0; n < candidates->count(); ++n) { | |
| 1508 const IceCandidateInterface* candidate = candidates->at(n); | |
| 1509 bool valid = false; | |
| 1510 if (!ReadyToUseRemoteCandidate(candidate, remote_desc, &valid)) { | |
| 1511 if (valid) { | |
| 1512 LOG(LS_INFO) << "UseCandidatesInSessionDescription: Not ready to use " | |
| 1513 << "candidate."; | |
| 1514 } | |
| 1515 continue; | |
| 1516 } | |
| 1517 ret = UseCandidate(candidate); | |
| 1518 if (!ret) { | |
| 1519 break; | |
| 1520 } | |
| 1521 } | |
| 1522 } | |
| 1523 return ret; | |
| 1524 } | |
| 1525 | |
| 1526 bool WebRtcSession::UseCandidate(const IceCandidateInterface* candidate) { | |
| 1527 size_t mediacontent_index = static_cast<size_t>(candidate->sdp_mline_index()); | |
| 1528 size_t remote_content_size = remote_desc_->description()->contents().size(); | |
| 1529 if (mediacontent_index >= remote_content_size) { | |
| 1530 LOG(LS_ERROR) << "UseCandidate: Invalid candidate media index."; | |
| 1531 return false; | |
| 1532 } | |
| 1533 | |
| 1534 cricket::ContentInfo content = | |
| 1535 remote_desc_->description()->contents()[mediacontent_index]; | |
| 1536 std::vector<cricket::Candidate> candidates; | |
| 1537 candidates.push_back(candidate->candidate()); | |
| 1538 // Invoking BaseSession method to handle remote candidates. | |
| 1539 std::string error; | |
| 1540 if (transport_controller_->AddRemoteCandidates(content.name, candidates, | |
| 1541 &error)) { | |
| 1542 // Candidates successfully submitted for checking. | |
| 1543 if (ice_connection_state_ == PeerConnectionInterface::kIceConnectionNew || | |
| 1544 ice_connection_state_ == | |
| 1545 PeerConnectionInterface::kIceConnectionDisconnected) { | |
| 1546 // If state is New, then the session has just gotten its first remote ICE | |
| 1547 // candidates, so go to Checking. | |
| 1548 // If state is Disconnected, the session is re-using old candidates or | |
| 1549 // receiving additional ones, so go to Checking. | |
| 1550 // If state is Connected, stay Connected. | |
| 1551 // TODO(bemasc): If state is Connected, and the new candidates are for a | |
| 1552 // newly added transport, then the state actually _should_ move to | |
| 1553 // checking. Add a way to distinguish that case. | |
| 1554 SetIceConnectionState(PeerConnectionInterface::kIceConnectionChecking); | |
| 1555 } | |
| 1556 // TODO(bemasc): If state is Completed, go back to Connected. | |
| 1557 } else { | |
| 1558 if (!error.empty()) { | |
| 1559 LOG(LS_WARNING) << error; | |
| 1560 } | |
| 1561 } | |
| 1562 return true; | |
| 1563 } | |
| 1564 | |
| 1565 void WebRtcSession::RemoveUnusedChannels(const SessionDescription* desc) { | |
| 1566 // Destroy video_channel_ first since it may have a pointer to the | |
| 1567 // voice_channel_. | |
| 1568 const cricket::ContentInfo* video_info = | |
| 1569 cricket::GetFirstVideoContent(desc); | |
| 1570 if ((!video_info || video_info->rejected) && video_channel_) { | |
| 1571 SignalVideoChannelDestroyed(); | |
| 1572 channel_manager_->DestroyVideoChannel(video_channel_.release()); | |
| 1573 } | |
| 1574 | |
| 1575 const cricket::ContentInfo* voice_info = | |
| 1576 cricket::GetFirstAudioContent(desc); | |
| 1577 if ((!voice_info || voice_info->rejected) && voice_channel_) { | |
| 1578 SignalVoiceChannelDestroyed(); | |
| 1579 channel_manager_->DestroyVoiceChannel(voice_channel_.release()); | |
| 1580 } | |
| 1581 | |
| 1582 const cricket::ContentInfo* data_info = | |
| 1583 cricket::GetFirstDataContent(desc); | |
| 1584 if (!data_info || data_info->rejected) { | |
| 1585 if (data_channel_) { | |
| 1586 SignalDataChannelDestroyed(); | |
| 1587 channel_manager_->DestroyDataChannel(data_channel_.release()); | |
| 1588 } | |
| 1589 #ifdef HAVE_QUIC | |
| 1590 // Clean up the existing QuicDataTransport and its QuicTransportChannels. | |
| 1591 if (quic_data_transport_) { | |
| 1592 quic_data_transport_.reset(); | |
| 1593 } | |
| 1594 #endif | |
| 1595 } | |
| 1596 } | |
| 1597 | |
| 1598 // Returns the name of the transport channel when BUNDLE is enabled, or nullptr | |
| 1599 // if the channel is not part of any bundle. | |
| 1600 const std::string* WebRtcSession::GetBundleTransportName( | |
| 1601 const cricket::ContentInfo* content, | |
| 1602 const cricket::ContentGroup* bundle) { | |
| 1603 if (!bundle) { | |
| 1604 return nullptr; | |
| 1605 } | |
| 1606 const std::string* first_content_name = bundle->FirstContentName(); | |
| 1607 if (!first_content_name) { | |
| 1608 LOG(LS_WARNING) << "Tried to BUNDLE with no contents."; | |
| 1609 return nullptr; | |
| 1610 } | |
| 1611 if (!bundle->HasContentName(content->name)) { | |
| 1612 LOG(LS_WARNING) << content->name << " is not part of any bundle group"; | |
| 1613 return nullptr; | |
| 1614 } | |
| 1615 LOG(LS_INFO) << "Bundling " << content->name << " on " << *first_content_name; | |
| 1616 return first_content_name; | |
| 1617 } | |
| 1618 | |
| 1619 bool WebRtcSession::CreateChannels(const SessionDescription* desc) { | |
| 1620 const cricket::ContentGroup* bundle_group = nullptr; | |
| 1621 if (bundle_policy_ == PeerConnectionInterface::kBundlePolicyMaxBundle) { | |
| 1622 bundle_group = desc->GetGroupByName(cricket::GROUP_TYPE_BUNDLE); | |
| 1623 if (!bundle_group) { | |
| 1624 LOG(LS_WARNING) << "max-bundle specified without BUNDLE specified"; | |
| 1625 return false; | |
| 1626 } | |
| 1627 } | |
| 1628 // Creating the media channels and transport proxies. | |
| 1629 const cricket::ContentInfo* voice = cricket::GetFirstAudioContent(desc); | |
| 1630 if (voice && !voice->rejected && !voice_channel_) { | |
| 1631 if (!CreateVoiceChannel(voice, | |
| 1632 GetBundleTransportName(voice, bundle_group))) { | |
| 1633 LOG(LS_ERROR) << "Failed to create voice channel."; | |
| 1634 return false; | |
| 1635 } | |
| 1636 } | |
| 1637 | |
| 1638 const cricket::ContentInfo* video = cricket::GetFirstVideoContent(desc); | |
| 1639 if (video && !video->rejected && !video_channel_) { | |
| 1640 if (!CreateVideoChannel(video, | |
| 1641 GetBundleTransportName(video, bundle_group))) { | |
| 1642 LOG(LS_ERROR) << "Failed to create video channel."; | |
| 1643 return false; | |
| 1644 } | |
| 1645 } | |
| 1646 | |
| 1647 const cricket::ContentInfo* data = cricket::GetFirstDataContent(desc); | |
| 1648 if (data_channel_type_ != cricket::DCT_NONE && | |
| 1649 data && !data->rejected && !data_channel_) { | |
| 1650 if (!CreateDataChannel(data, GetBundleTransportName(data, bundle_group))) { | |
| 1651 LOG(LS_ERROR) << "Failed to create data channel."; | |
| 1652 return false; | |
| 1653 } | |
| 1654 } | |
| 1655 | |
| 1656 return true; | |
| 1657 } | |
| 1658 | |
| 1659 bool WebRtcSession::CreateVoiceChannel(const cricket::ContentInfo* content, | |
| 1660 const std::string* bundle_transport) { | |
| 1661 bool require_rtcp_mux = | |
| 1662 rtcp_mux_policy_ == PeerConnectionInterface::kRtcpMuxPolicyRequire; | |
| 1663 bool create_rtcp_transport_channel = !require_rtcp_mux; | |
| 1664 voice_channel_.reset(channel_manager_->CreateVoiceChannel( | |
| 1665 media_controller_, transport_controller_.get(), content->name, | |
| 1666 bundle_transport, create_rtcp_transport_channel, audio_options_)); | |
| 1667 if (!voice_channel_) { | |
| 1668 return false; | |
| 1669 } | |
| 1670 if (require_rtcp_mux) { | |
| 1671 voice_channel_->ActivateRtcpMux(); | |
| 1672 } | |
| 1673 | |
| 1674 voice_channel_->SignalDtlsSetupFailure.connect( | |
| 1675 this, &WebRtcSession::OnDtlsSetupFailure); | |
| 1676 | |
| 1677 SignalVoiceChannelCreated(); | |
| 1678 voice_channel_->SignalSentPacket.connect(this, | |
| 1679 &WebRtcSession::OnSentPacket_w); | |
| 1680 return true; | |
| 1681 } | |
| 1682 | |
| 1683 bool WebRtcSession::CreateVideoChannel(const cricket::ContentInfo* content, | |
| 1684 const std::string* bundle_transport) { | |
| 1685 bool require_rtcp_mux = | |
| 1686 rtcp_mux_policy_ == PeerConnectionInterface::kRtcpMuxPolicyRequire; | |
| 1687 bool create_rtcp_transport_channel = !require_rtcp_mux; | |
| 1688 video_channel_.reset(channel_manager_->CreateVideoChannel( | |
| 1689 media_controller_, transport_controller_.get(), content->name, | |
| 1690 bundle_transport, create_rtcp_transport_channel, video_options_)); | |
| 1691 if (!video_channel_) { | |
| 1692 return false; | |
| 1693 } | |
| 1694 if (require_rtcp_mux) { | |
| 1695 video_channel_->ActivateRtcpMux(); | |
| 1696 } | |
| 1697 video_channel_->SignalDtlsSetupFailure.connect( | |
| 1698 this, &WebRtcSession::OnDtlsSetupFailure); | |
| 1699 | |
| 1700 SignalVideoChannelCreated(); | |
| 1701 video_channel_->SignalSentPacket.connect(this, | |
| 1702 &WebRtcSession::OnSentPacket_w); | |
| 1703 return true; | |
| 1704 } | |
| 1705 | |
| 1706 bool WebRtcSession::CreateDataChannel(const cricket::ContentInfo* content, | |
| 1707 const std::string* bundle_transport) { | |
| 1708 #ifdef HAVE_QUIC | |
| 1709 if (data_channel_type_ == cricket::DCT_QUIC) { | |
| 1710 RTC_DCHECK(transport_controller_->quic()); | |
| 1711 const std::string transport_name = | |
| 1712 bundle_transport ? *bundle_transport : content->name; | |
| 1713 quic_data_transport_->SetTransport(transport_name); | |
| 1714 return true; | |
| 1715 } | |
| 1716 #endif // HAVE_QUIC | |
| 1717 bool sctp = (data_channel_type_ == cricket::DCT_SCTP); | |
| 1718 bool require_rtcp_mux = | |
| 1719 rtcp_mux_policy_ == PeerConnectionInterface::kRtcpMuxPolicyRequire; | |
| 1720 bool create_rtcp_transport_channel = !sctp && !require_rtcp_mux; | |
| 1721 data_channel_.reset(channel_manager_->CreateDataChannel( | |
| 1722 transport_controller_.get(), media_controller_, content->name, | |
| 1723 bundle_transport, create_rtcp_transport_channel, data_channel_type_)); | |
| 1724 if (!data_channel_) { | |
| 1725 return false; | |
| 1726 } | |
| 1727 if (require_rtcp_mux) { | |
| 1728 data_channel_->ActivateRtcpMux(); | |
| 1729 } | |
| 1730 | |
| 1731 if (sctp) { | |
| 1732 data_channel_->SignalDataReceived.connect( | |
| 1733 this, &WebRtcSession::OnDataChannelMessageReceived); | |
| 1734 } | |
| 1735 | |
| 1736 data_channel_->SignalDtlsSetupFailure.connect( | |
| 1737 this, &WebRtcSession::OnDtlsSetupFailure); | |
| 1738 | |
| 1739 SignalDataChannelCreated(); | |
| 1740 data_channel_->SignalSentPacket.connect(this, &WebRtcSession::OnSentPacket_w); | |
| 1741 return true; | |
| 1742 } | |
| 1743 | |
| 1744 void WebRtcSession::OnDtlsSetupFailure(cricket::BaseChannel*, bool rtcp) { | |
| 1745 SetError(ERROR_TRANSPORT, | |
| 1746 rtcp ? kDtlsSetupFailureRtcp : kDtlsSetupFailureRtp); | |
| 1747 } | |
| 1748 | |
| 1749 void WebRtcSession::OnDataChannelMessageReceived( | |
| 1750 cricket::DataChannel* channel, | |
| 1751 const cricket::ReceiveDataParams& params, | |
| 1752 const rtc::CopyOnWriteBuffer& payload) { | |
| 1753 RTC_DCHECK(data_channel_type_ == cricket::DCT_SCTP); | |
| 1754 if (params.type == cricket::DMT_CONTROL && IsOpenMessage(payload)) { | |
| 1755 // Received OPEN message; parse and signal that a new data channel should | |
| 1756 // be created. | |
| 1757 std::string label; | |
| 1758 InternalDataChannelInit config; | |
| 1759 config.id = params.ssrc; | |
| 1760 if (!ParseDataChannelOpenMessage(payload, &label, &config)) { | |
| 1761 LOG(LS_WARNING) << "Failed to parse the OPEN message for sid " | |
| 1762 << params.ssrc; | |
| 1763 return; | |
| 1764 } | |
| 1765 config.open_handshake_role = InternalDataChannelInit::kAcker; | |
| 1766 SignalDataChannelOpenMessage(label, config); | |
| 1767 } | |
| 1768 // Otherwise ignore the message. | |
| 1769 } | |
| 1770 | |
| 1771 // Returns false if bundle is enabled and rtcp_mux is disabled. | |
| 1772 bool WebRtcSession::ValidateBundleSettings(const SessionDescription* desc) { | |
| 1773 bool bundle_enabled = desc->HasGroup(cricket::GROUP_TYPE_BUNDLE); | |
| 1774 if (!bundle_enabled) | |
| 1775 return true; | |
| 1776 | |
| 1777 const cricket::ContentGroup* bundle_group = | |
| 1778 desc->GetGroupByName(cricket::GROUP_TYPE_BUNDLE); | |
| 1779 ASSERT(bundle_group != NULL); | |
| 1780 | |
| 1781 const cricket::ContentInfos& contents = desc->contents(); | |
| 1782 for (cricket::ContentInfos::const_iterator citer = contents.begin(); | |
| 1783 citer != contents.end(); ++citer) { | |
| 1784 const cricket::ContentInfo* content = (&*citer); | |
| 1785 ASSERT(content != NULL); | |
| 1786 if (bundle_group->HasContentName(content->name) && | |
| 1787 !content->rejected && content->type == cricket::NS_JINGLE_RTP) { | |
| 1788 if (!HasRtcpMuxEnabled(content)) | |
| 1789 return false; | |
| 1790 } | |
| 1791 } | |
| 1792 // RTCP-MUX is enabled in all the contents. | |
| 1793 return true; | |
| 1794 } | |
| 1795 | |
| 1796 bool WebRtcSession::HasRtcpMuxEnabled( | |
| 1797 const cricket::ContentInfo* content) { | |
| 1798 const cricket::MediaContentDescription* description = | |
| 1799 static_cast<cricket::MediaContentDescription*>(content->description); | |
| 1800 return description->rtcp_mux(); | |
| 1801 } | |
| 1802 | |
| 1803 bool WebRtcSession::ValidateSessionDescription( | |
| 1804 const SessionDescriptionInterface* sdesc, | |
| 1805 cricket::ContentSource source, std::string* err_desc) { | |
| 1806 std::string type; | |
| 1807 if (error() != ERROR_NONE) { | |
| 1808 return BadSdp(source, type, GetSessionErrorMsg(), err_desc); | |
| 1809 } | |
| 1810 | |
| 1811 if (!sdesc || !sdesc->description()) { | |
| 1812 return BadSdp(source, type, kInvalidSdp, err_desc); | |
| 1813 } | |
| 1814 | |
| 1815 type = sdesc->type(); | |
| 1816 Action action = GetAction(sdesc->type()); | |
| 1817 if (source == cricket::CS_LOCAL) { | |
| 1818 if (!ExpectSetLocalDescription(action)) | |
| 1819 return BadLocalSdp(type, BadStateErrMsg(state()), err_desc); | |
| 1820 } else { | |
| 1821 if (!ExpectSetRemoteDescription(action)) | |
| 1822 return BadRemoteSdp(type, BadStateErrMsg(state()), err_desc); | |
| 1823 } | |
| 1824 | |
| 1825 // Verify crypto settings. | |
| 1826 std::string crypto_error; | |
| 1827 if ((webrtc_session_desc_factory_->SdesPolicy() == cricket::SEC_REQUIRED || | |
| 1828 dtls_enabled_) && | |
| 1829 !VerifyCrypto(sdesc->description(), dtls_enabled_, &crypto_error)) { | |
| 1830 return BadSdp(source, type, crypto_error, err_desc); | |
| 1831 } | |
| 1832 | |
| 1833 // Verify ice-ufrag and ice-pwd. | |
| 1834 if (!VerifyIceUfragPwdPresent(sdesc->description())) { | |
| 1835 return BadSdp(source, type, kSdpWithoutIceUfragPwd, err_desc); | |
| 1836 } | |
| 1837 | |
| 1838 if (!ValidateBundleSettings(sdesc->description())) { | |
| 1839 return BadSdp(source, type, kBundleWithoutRtcpMux, err_desc); | |
| 1840 } | |
| 1841 | |
| 1842 // TODO(skvlad): When the local rtcp-mux policy is Require, reject any | |
| 1843 // m-lines that do not rtcp-mux enabled. | |
| 1844 | |
| 1845 // Verify m-lines in Answer when compared against Offer. | |
| 1846 if (action == kAnswer) { | |
| 1847 const cricket::SessionDescription* offer_desc = | |
| 1848 (source == cricket::CS_LOCAL) ? remote_desc_->description() | |
| 1849 : local_desc_->description(); | |
| 1850 if (!VerifyMediaDescriptions(sdesc->description(), offer_desc)) { | |
| 1851 return BadAnswerSdp(source, kMlineMismatch, err_desc); | |
| 1852 } | |
| 1853 } | |
| 1854 | |
| 1855 return true; | |
| 1856 } | |
| 1857 | |
| 1858 bool WebRtcSession::ExpectSetLocalDescription(Action action) { | |
| 1859 return ((action == kOffer && state() == STATE_INIT) || | |
| 1860 // update local offer | |
| 1861 (action == kOffer && state() == STATE_SENTOFFER) || | |
| 1862 // update the current ongoing session. | |
| 1863 (action == kOffer && state() == STATE_INPROGRESS) || | |
| 1864 // accept remote offer | |
| 1865 (action == kAnswer && state() == STATE_RECEIVEDOFFER) || | |
| 1866 (action == kAnswer && state() == STATE_SENTPRANSWER) || | |
| 1867 (action == kPrAnswer && state() == STATE_RECEIVEDOFFER) || | |
| 1868 (action == kPrAnswer && state() == STATE_SENTPRANSWER)); | |
| 1869 } | |
| 1870 | |
| 1871 bool WebRtcSession::ExpectSetRemoteDescription(Action action) { | |
| 1872 return ((action == kOffer && state() == STATE_INIT) || | |
| 1873 // update remote offer | |
| 1874 (action == kOffer && state() == STATE_RECEIVEDOFFER) || | |
| 1875 // update the current ongoing session | |
| 1876 (action == kOffer && state() == STATE_INPROGRESS) || | |
| 1877 // accept local offer | |
| 1878 (action == kAnswer && state() == STATE_SENTOFFER) || | |
| 1879 (action == kAnswer && state() == STATE_RECEIVEDPRANSWER) || | |
| 1880 (action == kPrAnswer && state() == STATE_SENTOFFER) || | |
| 1881 (action == kPrAnswer && state() == STATE_RECEIVEDPRANSWER)); | |
| 1882 } | |
| 1883 | |
| 1884 std::string WebRtcSession::GetSessionErrorMsg() { | |
| 1885 std::ostringstream desc; | |
| 1886 desc << kSessionError << GetErrorCodeString(error()) << ". "; | |
| 1887 desc << kSessionErrorDesc << error_desc() << "."; | |
| 1888 return desc.str(); | |
| 1889 } | |
| 1890 | |
| 1891 // We need to check the local/remote description for the Transport instead of | |
| 1892 // the session, because a new Transport added during renegotiation may have | |
| 1893 // them unset while the session has them set from the previous negotiation. | |
| 1894 // Not doing so may trigger the auto generation of transport description and | |
| 1895 // mess up DTLS identity information, ICE credential, etc. | |
| 1896 bool WebRtcSession::ReadyToUseRemoteCandidate( | |
| 1897 const IceCandidateInterface* candidate, | |
| 1898 const SessionDescriptionInterface* remote_desc, | |
| 1899 bool* valid) { | |
| 1900 *valid = true; | |
| 1901 | |
| 1902 const SessionDescriptionInterface* current_remote_desc = | |
| 1903 remote_desc ? remote_desc : remote_desc_.get(); | |
| 1904 | |
| 1905 if (!current_remote_desc) { | |
| 1906 return false; | |
| 1907 } | |
| 1908 | |
| 1909 size_t mediacontent_index = | |
| 1910 static_cast<size_t>(candidate->sdp_mline_index()); | |
| 1911 size_t remote_content_size = | |
| 1912 current_remote_desc->description()->contents().size(); | |
| 1913 if (mediacontent_index >= remote_content_size) { | |
| 1914 LOG(LS_ERROR) << "ReadyToUseRemoteCandidate: Invalid candidate media index " | |
| 1915 << mediacontent_index; | |
| 1916 | |
| 1917 *valid = false; | |
| 1918 return false; | |
| 1919 } | |
| 1920 | |
| 1921 cricket::ContentInfo content = | |
| 1922 current_remote_desc->description()->contents()[mediacontent_index]; | |
| 1923 | |
| 1924 const std::string transport_name = GetTransportName(content.name); | |
| 1925 if (transport_name.empty()) { | |
| 1926 return false; | |
| 1927 } | |
| 1928 return transport_controller_->ReadyForRemoteCandidates(transport_name); | |
| 1929 } | |
| 1930 | |
| 1931 void WebRtcSession::OnTransportControllerGatheringState( | |
| 1932 cricket::IceGatheringState state) { | |
| 1933 ASSERT(signaling_thread()->IsCurrent()); | |
| 1934 if (state == cricket::kIceGatheringGathering) { | |
| 1935 if (ice_observer_) { | |
| 1936 ice_observer_->OnIceGatheringChange( | |
| 1937 PeerConnectionInterface::kIceGatheringGathering); | |
| 1938 } | |
| 1939 } else if (state == cricket::kIceGatheringComplete) { | |
| 1940 if (ice_observer_) { | |
| 1941 ice_observer_->OnIceGatheringChange( | |
| 1942 PeerConnectionInterface::kIceGatheringComplete); | |
| 1943 } | |
| 1944 } | |
| 1945 } | |
| 1946 | |
| 1947 void WebRtcSession::ReportTransportStats() { | |
| 1948 // Use a set so we don't report the same stats twice if two channels share | |
| 1949 // a transport. | |
| 1950 std::set<std::string> transport_names; | |
| 1951 if (voice_channel()) { | |
| 1952 transport_names.insert(voice_channel()->transport_name()); | |
| 1953 } | |
| 1954 if (video_channel()) { | |
| 1955 transport_names.insert(video_channel()->transport_name()); | |
| 1956 } | |
| 1957 if (data_channel()) { | |
| 1958 transport_names.insert(data_channel()->transport_name()); | |
| 1959 } | |
| 1960 for (const auto& name : transport_names) { | |
| 1961 cricket::TransportStats stats; | |
| 1962 if (transport_controller_->GetStats(name, &stats)) { | |
| 1963 ReportBestConnectionState(stats); | |
| 1964 ReportNegotiatedCiphers(stats); | |
| 1965 } | |
| 1966 } | |
| 1967 } | |
| 1968 // Walk through the ConnectionInfos to gather best connection usage | |
| 1969 // for IPv4 and IPv6. | |
| 1970 void WebRtcSession::ReportBestConnectionState( | |
| 1971 const cricket::TransportStats& stats) { | |
| 1972 RTC_DCHECK(metrics_observer_ != NULL); | |
| 1973 for (cricket::TransportChannelStatsList::const_iterator it = | |
| 1974 stats.channel_stats.begin(); | |
| 1975 it != stats.channel_stats.end(); ++it) { | |
| 1976 for (cricket::ConnectionInfos::const_iterator it_info = | |
| 1977 it->connection_infos.begin(); | |
| 1978 it_info != it->connection_infos.end(); ++it_info) { | |
| 1979 if (!it_info->best_connection) { | |
| 1980 continue; | |
| 1981 } | |
| 1982 | |
| 1983 PeerConnectionEnumCounterType type = kPeerConnectionEnumCounterMax; | |
| 1984 const cricket::Candidate& local = it_info->local_candidate; | |
| 1985 const cricket::Candidate& remote = it_info->remote_candidate; | |
| 1986 | |
| 1987 // Increment the counter for IceCandidatePairType. | |
| 1988 if (local.protocol() == cricket::TCP_PROTOCOL_NAME || | |
| 1989 (local.type() == RELAY_PORT_TYPE && | |
| 1990 local.relay_protocol() == cricket::TCP_PROTOCOL_NAME)) { | |
| 1991 type = kEnumCounterIceCandidatePairTypeTcp; | |
| 1992 } else if (local.protocol() == cricket::UDP_PROTOCOL_NAME) { | |
| 1993 type = kEnumCounterIceCandidatePairTypeUdp; | |
| 1994 } else { | |
| 1995 RTC_CHECK(0); | |
| 1996 } | |
| 1997 metrics_observer_->IncrementEnumCounter( | |
| 1998 type, GetIceCandidatePairCounter(local, remote), | |
| 1999 kIceCandidatePairMax); | |
| 2000 | |
| 2001 // Increment the counter for IP type. | |
| 2002 if (local.address().family() == AF_INET) { | |
| 2003 metrics_observer_->IncrementEnumCounter( | |
| 2004 kEnumCounterAddressFamily, kBestConnections_IPv4, | |
| 2005 kPeerConnectionAddressFamilyCounter_Max); | |
| 2006 | |
| 2007 } else if (local.address().family() == AF_INET6) { | |
| 2008 metrics_observer_->IncrementEnumCounter( | |
| 2009 kEnumCounterAddressFamily, kBestConnections_IPv6, | |
| 2010 kPeerConnectionAddressFamilyCounter_Max); | |
| 2011 } else { | |
| 2012 RTC_CHECK(0); | |
| 2013 } | |
| 2014 | |
| 2015 return; | |
| 2016 } | |
| 2017 } | |
| 2018 } | |
| 2019 | |
| 2020 void WebRtcSession::ReportNegotiatedCiphers( | |
| 2021 const cricket::TransportStats& stats) { | |
| 2022 RTC_DCHECK(metrics_observer_ != NULL); | |
| 2023 if (!dtls_enabled_ || stats.channel_stats.empty()) { | |
| 2024 return; | |
| 2025 } | |
| 2026 | |
| 2027 int srtp_crypto_suite = stats.channel_stats[0].srtp_crypto_suite; | |
| 2028 int ssl_cipher_suite = stats.channel_stats[0].ssl_cipher_suite; | |
| 2029 if (srtp_crypto_suite == rtc::SRTP_INVALID_CRYPTO_SUITE && | |
| 2030 ssl_cipher_suite == rtc::TLS_NULL_WITH_NULL_NULL) { | |
| 2031 return; | |
| 2032 } | |
| 2033 | |
| 2034 PeerConnectionEnumCounterType srtp_counter_type; | |
| 2035 PeerConnectionEnumCounterType ssl_counter_type; | |
| 2036 if (stats.transport_name == cricket::CN_AUDIO) { | |
| 2037 srtp_counter_type = kEnumCounterAudioSrtpCipher; | |
| 2038 ssl_counter_type = kEnumCounterAudioSslCipher; | |
| 2039 } else if (stats.transport_name == cricket::CN_VIDEO) { | |
| 2040 srtp_counter_type = kEnumCounterVideoSrtpCipher; | |
| 2041 ssl_counter_type = kEnumCounterVideoSslCipher; | |
| 2042 } else if (stats.transport_name == cricket::CN_DATA) { | |
| 2043 srtp_counter_type = kEnumCounterDataSrtpCipher; | |
| 2044 ssl_counter_type = kEnumCounterDataSslCipher; | |
| 2045 } else { | |
| 2046 RTC_NOTREACHED(); | |
| 2047 return; | |
| 2048 } | |
| 2049 | |
| 2050 if (srtp_crypto_suite != rtc::SRTP_INVALID_CRYPTO_SUITE) { | |
| 2051 metrics_observer_->IncrementSparseEnumCounter(srtp_counter_type, | |
| 2052 srtp_crypto_suite); | |
| 2053 } | |
| 2054 if (ssl_cipher_suite != rtc::TLS_NULL_WITH_NULL_NULL) { | |
| 2055 metrics_observer_->IncrementSparseEnumCounter(ssl_counter_type, | |
| 2056 ssl_cipher_suite); | |
| 2057 } | |
| 2058 } | |
| 2059 | |
| 2060 void WebRtcSession::OnSentPacket_w(const rtc::SentPacket& sent_packet) { | |
| 2061 RTC_DCHECK(worker_thread()->IsCurrent()); | |
| 2062 media_controller_->call_w()->OnSentPacket(sent_packet); | |
| 2063 } | |
| 2064 | |
| 2065 const std::string WebRtcSession::GetTransportName( | |
| 2066 const std::string& content_name) { | |
| 2067 cricket::BaseChannel* channel = GetChannel(content_name); | |
| 2068 if (!channel) { | |
| 2069 #ifdef HAVE_QUIC | |
| 2070 if (data_channel_type_ == cricket::DCT_QUIC && quic_data_transport_ && | |
| 2071 content_name == quic_data_transport_->transport_name()) { | |
| 2072 return quic_data_transport_->transport_name(); | |
| 2073 } | |
| 2074 #endif | |
| 2075 // Return an empty string if failed to retrieve the transport name. | |
| 2076 return ""; | |
| 2077 } | |
| 2078 return channel->transport_name(); | |
| 2079 } | |
| 2080 | |
| 2081 void WebRtcSession::OnDtlsHandshakeError(rtc::SSLHandshakeError error) { | |
| 2082 if (metrics_observer_) { | |
| 2083 metrics_observer_->IncrementEnumCounter( | |
| 2084 webrtc::kEnumCounterDtlsHandshakeError, static_cast<int>(error), | |
| 2085 static_cast<int>(rtc::SSLHandshakeError::MAX_VALUE)); | |
| 2086 } | |
| 2087 } | |
| 2088 } // namespace webrtc | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2514883002:
Create //webrtc/api:libjingle_peerconnection_api + refactorings. (Closed)
