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/*
* libjingle
* Copyright 2012, Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "talk/app/webrtc/peerconnection.h"
#include <vector>
#include "talk/app/webrtc/dtmfsender.h"
#include "talk/app/webrtc/jsepicecandidate.h"
#include "talk/app/webrtc/jsepsessiondescription.h"
#include "talk/app/webrtc/mediastreamhandler.h"
#include "talk/app/webrtc/streamcollection.h"
#include "talk/base/logging.h"
#include "talk/base/stringencode.h"
#include "talk/session/media/channelmanager.h"
namespace {
using webrtc::PeerConnectionInterface;
// The min number of tokens in the ice uri.
static const size_t kMinIceUriTokens = 2;
// The min number of tokens must present in Turn host uri.
// e.g. user@turn.example.org
static const size_t kTurnHostTokensNum = 2;
// Number of tokens must be preset when TURN uri has transport param.
static const size_t kTurnTransportTokensNum = 2;
// The default stun port.
static const int kDefaultStunPort = 3478;
static const int kDefaultStunTlsPort = 5349;
static const char kTransport[] = "transport";
static const char kUdpTransportType[] = "udp";
static const char kTcpTransportType[] = "tcp";
// NOTE: Must be in the same order as the ServiceType enum.
static const char* kValidIceServiceTypes[] = {
"stun", "stuns", "turn", "turns", "invalid" };
enum ServiceType {
STUN, // Indicates a STUN server.
STUNS, // Indicates a STUN server used with a TLS session.
TURN, // Indicates a TURN server
TURNS, // Indicates a TURN server used with a TLS session.
INVALID, // Unknown.
};
enum {
MSG_SET_SESSIONDESCRIPTION_SUCCESS = 0,
MSG_SET_SESSIONDESCRIPTION_FAILED,
MSG_GETSTATS,
MSG_ICECONNECTIONCHANGE,
MSG_ICEGATHERINGCHANGE,
MSG_ICECANDIDATE,
MSG_ICECOMPLETE,
};
struct CandidateMsg : public talk_base::MessageData {
explicit CandidateMsg(const webrtc::JsepIceCandidate* candidate)
: candidate(candidate) {
}
talk_base::scoped_ptr<const webrtc::JsepIceCandidate> candidate;
};
struct SetSessionDescriptionMsg : public talk_base::MessageData {
explicit SetSessionDescriptionMsg(
webrtc::SetSessionDescriptionObserver* observer)
: observer(observer) {
}
talk_base::scoped_refptr<webrtc::SetSessionDescriptionObserver> observer;
std::string error;
};
struct GetStatsMsg : public talk_base::MessageData {
explicit GetStatsMsg(webrtc::StatsObserver* observer)
: observer(observer) {
}
webrtc::StatsReports reports;
talk_base::scoped_refptr<webrtc::StatsObserver> observer;
};
typedef webrtc::PortAllocatorFactoryInterface::StunConfiguration
StunConfiguration;
typedef webrtc::PortAllocatorFactoryInterface::TurnConfiguration
TurnConfiguration;
bool ParseIceServers(const PeerConnectionInterface::IceServers& configuration,
std::vector<StunConfiguration>* stun_config,
std::vector<TurnConfiguration>* turn_config) {
// draft-nandakumar-rtcweb-stun-uri-01
// stunURI = scheme ":" stun-host [ ":" stun-port ]
// scheme = "stun" / "stuns"
// stun-host = IP-literal / IPv4address / reg-name
// stun-port = *DIGIT
// draft-petithuguenin-behave-turn-uris-01
// turnURI = scheme ":" turn-host [ ":" turn-port ]
// [ "?transport=" transport ]
// scheme = "turn" / "turns"
// transport = "udp" / "tcp" / transport-ext
// transport-ext = 1*unreserved
// turn-host = IP-literal / IPv4address / reg-name
// turn-port = *DIGIT
// TODO(ronghuawu): Handle IPV6 address
for (size_t i = 0; i < configuration.size(); ++i) {
webrtc::PeerConnectionInterface::IceServer server = configuration[i];
if (server.uri.empty()) {
LOG(WARNING) << "Empty uri.";
continue;
}
std::vector<std::string> tokens;
std::string turn_transport_type = kUdpTransportType;
talk_base::tokenize(server.uri, '?', &tokens);
std::string uri_without_transport = tokens[0];
// Let's look into transport= param, if it exists.
if (tokens.size() == kTurnTransportTokensNum) { // ?transport= is present.
std::string uri_transport_param = tokens[1];
talk_base::tokenize(uri_transport_param, '=', &tokens);
if (tokens[0] == kTransport) {
// As per above grammar transport param will be consist of lower case
// letters.
if (tokens[1] != kUdpTransportType && tokens[1] != kTcpTransportType) {
LOG(LS_WARNING) << "Transport param should always be udp or tcp.";
continue;
}
turn_transport_type = tokens[1];
}
}
tokens.clear();
talk_base::tokenize(uri_without_transport, ':', &tokens);
if (tokens.size() < kMinIceUriTokens) {
LOG(WARNING) << "Invalid uri: " << server.uri;
continue;
}
ServiceType service_type = INVALID;
const std::string& type = tokens[0];
for (size_t i = 0; i < ARRAY_SIZE(kValidIceServiceTypes); ++i) {
if (type.compare(kValidIceServiceTypes[i]) == 0) {
service_type = static_cast<ServiceType>(i);
break;
}
}
if (service_type == INVALID) {
LOG(WARNING) << "Invalid service type: " << type;
continue;
}
std::string address = tokens[1];
int port = kDefaultStunPort;
if (service_type == TURNS)
port = kDefaultStunTlsPort;
if (tokens.size() > kMinIceUriTokens) {
if (!talk_base::FromString(tokens[2], &port)) {
LOG(LS_WARNING) << "Failed to parse port string: " << tokens[2];
continue;
}
if (port <= 0 || port > 0xffff) {
LOG(WARNING) << "Invalid port: " << port;
continue;
}
}
switch (service_type) {
case STUN:
case STUNS:
stun_config->push_back(StunConfiguration(address, port));
break;
case TURN:
case TURNS: {
if (server.username.empty()) {
// Turn url example from the spec |url:"turn:user@turn.example.org"|.
std::vector<std::string> turn_tokens;
talk_base::tokenize(address, '@', &turn_tokens);
if (turn_tokens.size() == kTurnHostTokensNum) {
server.username = talk_base::s_url_decode(turn_tokens[0]);
address = turn_tokens[1];
}
}
bool secure = (service_type == TURNS);
turn_config->push_back(TurnConfiguration(address, port,
server.username,
server.password,
turn_transport_type,
secure));
// STUN functionality is part of TURN.
// Note: If there is only TURNS is supplied as part of configuration,
// we will have problem in fetching server reflexive candidate, as
// currently we don't have support of TCP/TLS in stunport.cc.
// In that case we should fetch server reflexive addess from
// TURN allocate response.
stun_config->push_back(StunConfiguration(address, port));
break;
}
case INVALID:
default:
LOG(WARNING) << "Configuration not supported: " << server.uri;
return false;
}
}
return true;
}
// Check if we can send |new_stream| on a PeerConnection.
// Currently only one audio but multiple video track is supported per
// PeerConnection.
bool CanAddLocalMediaStream(webrtc::StreamCollectionInterface* current_streams,
webrtc::MediaStreamInterface* new_stream) {
if (!new_stream || !current_streams)
return false;
if (current_streams->find(new_stream->label()) != NULL) {
LOG(LS_ERROR) << "MediaStream with label " << new_stream->label()
<< " is already added.";
return false;
}
return true;
}
} // namespace
namespace webrtc {
PeerConnection::PeerConnection(PeerConnectionFactory* factory)
: factory_(factory),
observer_(NULL),
signaling_state_(kStable),
ice_state_(kIceNew),
ice_connection_state_(kIceConnectionNew),
ice_gathering_state_(kIceGatheringNew) {
}
PeerConnection::~PeerConnection() {
if (mediastream_signaling_)
mediastream_signaling_->TearDown();
if (stream_handler_container_)
stream_handler_container_->TearDown();
}
bool PeerConnection::Initialize(
const PeerConnectionInterface::IceServers& configuration,
const MediaConstraintsInterface* constraints,
PortAllocatorFactoryInterface* allocator_factory,
DTLSIdentityServiceInterface* dtls_identity_service,
PeerConnectionObserver* observer) {
std::vector<PortAllocatorFactoryInterface::StunConfiguration> stun_config;
std::vector<PortAllocatorFactoryInterface::TurnConfiguration> turn_config;
if (!ParseIceServers(configuration, &stun_config, &turn_config)) {
return false;
}
return DoInitialize(stun_config, turn_config, constraints,
allocator_factory, dtls_identity_service, observer);
}
bool PeerConnection::DoInitialize(
const StunConfigurations& stun_config,
const TurnConfigurations& turn_config,
const MediaConstraintsInterface* constraints,
webrtc::PortAllocatorFactoryInterface* allocator_factory,
DTLSIdentityServiceInterface* dtls_identity_service,
PeerConnectionObserver* observer) {
ASSERT(observer != NULL);
if (!observer)
return false;
observer_ = observer;
port_allocator_.reset(
allocator_factory->CreatePortAllocator(stun_config, turn_config));
// To handle both internal and externally created port allocator, we will
// enable BUNDLE here. Also enabling TURN and disable legacy relay service.
port_allocator_->set_flags(cricket::PORTALLOCATOR_ENABLE_BUNDLE |
cricket::PORTALLOCATOR_ENABLE_SHARED_UFRAG |
cricket::PORTALLOCATOR_ENABLE_SHARED_SOCKET);
// No step delay is used while allocating ports.
port_allocator_->set_step_delay(cricket::kMinimumStepDelay);
mediastream_signaling_.reset(new MediaStreamSignaling(
factory_->signaling_thread(), this, factory_->channel_manager()));
session_.reset(new WebRtcSession(factory_->channel_manager(),
factory_->signaling_thread(),
factory_->worker_thread(),
port_allocator_.get(),
mediastream_signaling_.get()));
stream_handler_container_.reset(new MediaStreamHandlerContainer(
session_.get(), session_.get()));
stats_.set_session(session_.get());
// Initialize the WebRtcSession. It creates transport channels etc.
if (!session_->Initialize(constraints, dtls_identity_service))
return false;
// Register PeerConnection as receiver of local ice candidates.
// All the callbacks will be posted to the application from PeerConnection.
session_->RegisterIceObserver(this);
session_->SignalState.connect(this, &PeerConnection::OnSessionStateChange);
return true;
}
talk_base::scoped_refptr<StreamCollectionInterface>
PeerConnection::local_streams() {
return mediastream_signaling_->local_streams();
}
talk_base::scoped_refptr<StreamCollectionInterface>
PeerConnection::remote_streams() {
return mediastream_signaling_->remote_streams();
}
bool PeerConnection::AddStream(MediaStreamInterface* local_stream,
const MediaConstraintsInterface* constraints) {
if (IsClosed()) {
return false;
}
if (!CanAddLocalMediaStream(mediastream_signaling_->local_streams(),
local_stream))
return false;
// TODO(perkj): Implement support for MediaConstraints in AddStream.
if (!mediastream_signaling_->AddLocalStream(local_stream)) {
return false;
}
stats_.AddStream(local_stream);
observer_->OnRenegotiationNeeded();
return true;
}
void PeerConnection::RemoveStream(MediaStreamInterface* local_stream) {
mediastream_signaling_->RemoveLocalStream(local_stream);
if (IsClosed()) {
return;
}
observer_->OnRenegotiationNeeded();
}
talk_base::scoped_refptr<DtmfSenderInterface> PeerConnection::CreateDtmfSender(
AudioTrackInterface* track) {
if (!track) {
LOG(LS_ERROR) << "CreateDtmfSender - track is NULL.";
return NULL;
}
if (!mediastream_signaling_->local_streams()->FindAudioTrack(track->id())) {
LOG(LS_ERROR) << "CreateDtmfSender is called with a non local audio track.";
return NULL;
}
talk_base::scoped_refptr<DtmfSenderInterface> sender(
DtmfSender::Create(track, signaling_thread(), session_.get()));
if (!sender.get()) {
LOG(LS_ERROR) << "CreateDtmfSender failed on DtmfSender::Create.";
return NULL;
}
return DtmfSenderProxy::Create(signaling_thread(), sender.get());
}
bool PeerConnection::GetStats(StatsObserver* observer,
MediaStreamTrackInterface* track) {
if (!VERIFY(observer != NULL)) {
LOG(LS_ERROR) << "GetStats - observer is NULL.";
return false;
}
stats_.UpdateStats();
talk_base::scoped_ptr<GetStatsMsg> msg(new GetStatsMsg(observer));
if (!stats_.GetStats(track, &(msg->reports))) {
return false;
}
signaling_thread()->Post(this, MSG_GETSTATS, msg.release());
return true;
}
PeerConnectionInterface::SignalingState PeerConnection::signaling_state() {
return signaling_state_;
}
PeerConnectionInterface::IceState PeerConnection::ice_state() {
return ice_state_;
}
PeerConnectionInterface::IceConnectionState
PeerConnection::ice_connection_state() {
return ice_connection_state_;
}
PeerConnectionInterface::IceGatheringState
PeerConnection::ice_gathering_state() {
return ice_gathering_state_;
}
talk_base::scoped_refptr<DataChannelInterface>
PeerConnection::CreateDataChannel(
const std::string& label,
const DataChannelInit* config) {
talk_base::scoped_refptr<DataChannelInterface> channel(
session_->CreateDataChannel(label, config));
if (!channel.get())
return NULL;
// If we've already passed the underlying channel's setup phase, have the
// MediaStreamSignaling update data channels manually.
if (session_->data_channel() != NULL &&
session_->data_channel_type() == cricket::DCT_SCTP) {
mediastream_signaling_->UpdateLocalSctpDataChannels();
mediastream_signaling_->UpdateRemoteSctpDataChannels();
}
observer_->OnRenegotiationNeeded();
return DataChannelProxy::Create(signaling_thread(), channel.get());
}
void PeerConnection::CreateOffer(CreateSessionDescriptionObserver* observer,
const MediaConstraintsInterface* constraints) {
if (!VERIFY(observer != NULL)) {
LOG(LS_ERROR) << "CreateOffer - observer is NULL.";
return;
}
session_->CreateOffer(observer, constraints);
}
void PeerConnection::CreateAnswer(
CreateSessionDescriptionObserver* observer,
const MediaConstraintsInterface* constraints) {
if (!VERIFY(observer != NULL)) {
LOG(LS_ERROR) << "CreateAnswer - observer is NULL.";
return;
}
session_->CreateAnswer(observer, constraints);
}
void PeerConnection::SetLocalDescription(
SetSessionDescriptionObserver* observer,
SessionDescriptionInterface* desc) {
if (!VERIFY(observer != NULL)) {
LOG(LS_ERROR) << "SetLocalDescription - observer is NULL.";
return;
}
if (!desc) {
PostSetSessionDescriptionFailure(observer, "SessionDescription is NULL.");
return;
}
// Update stats here so that we have the most recent stats for tracks and
// streams that might be removed by updating the session description.
stats_.UpdateStats();
std::string error;
if (!session_->SetLocalDescription(desc, &error)) {
PostSetSessionDescriptionFailure(observer, error);
return;
}
SetSessionDescriptionMsg* msg = new SetSessionDescriptionMsg(observer);
signaling_thread()->Post(this, MSG_SET_SESSIONDESCRIPTION_SUCCESS, msg);
}
void PeerConnection::SetRemoteDescription(
SetSessionDescriptionObserver* observer,
SessionDescriptionInterface* desc) {
if (!VERIFY(observer != NULL)) {
LOG(LS_ERROR) << "SetRemoteDescription - observer is NULL.";
return;
}
if (!desc) {
PostSetSessionDescriptionFailure(observer, "SessionDescription is NULL.");
return;
}
// Update stats here so that we have the most recent stats for tracks and
// streams that might be removed by updating the session description.
stats_.UpdateStats();
std::string error;
if (!session_->SetRemoteDescription(desc, &error)) {
PostSetSessionDescriptionFailure(observer, error);
return;
}
SetSessionDescriptionMsg* msg = new SetSessionDescriptionMsg(observer);
signaling_thread()->Post(this, MSG_SET_SESSIONDESCRIPTION_SUCCESS, msg);
}
void PeerConnection::PostSetSessionDescriptionFailure(
SetSessionDescriptionObserver* observer,
const std::string& error) {
SetSessionDescriptionMsg* msg = new SetSessionDescriptionMsg(observer);
msg->error = error;
signaling_thread()->Post(this, MSG_SET_SESSIONDESCRIPTION_FAILED, msg);
}
bool PeerConnection::UpdateIce(const IceServers& configuration,
const MediaConstraintsInterface* constraints) {
// TODO(ronghuawu): Implement UpdateIce.
LOG(LS_ERROR) << "UpdateIce is not implemented.";
return false;
}
bool PeerConnection::AddIceCandidate(
const IceCandidateInterface* ice_candidate) {
return session_->ProcessIceMessage(ice_candidate);
}
const SessionDescriptionInterface* PeerConnection::local_description() const {
return session_->local_description();
}
const SessionDescriptionInterface* PeerConnection::remote_description() const {
return session_->remote_description();
}
void PeerConnection::Close() {
// Update stats here so that we have the most recent stats for tracks and
// streams before the channels are closed.
stats_.UpdateStats();
session_->Terminate();
}
void PeerConnection::OnSessionStateChange(cricket::BaseSession* /*session*/,
cricket::BaseSession::State state) {
switch (state) {
case cricket::BaseSession::STATE_INIT:
ChangeSignalingState(PeerConnectionInterface::kStable);
case cricket::BaseSession::STATE_SENTINITIATE:
ChangeSignalingState(PeerConnectionInterface::kHaveLocalOffer);
break;
case cricket::BaseSession::STATE_SENTPRACCEPT:
ChangeSignalingState(PeerConnectionInterface::kHaveLocalPrAnswer);
break;
case cricket::BaseSession::STATE_RECEIVEDINITIATE:
ChangeSignalingState(PeerConnectionInterface::kHaveRemoteOffer);
break;
case cricket::BaseSession::STATE_RECEIVEDPRACCEPT:
ChangeSignalingState(PeerConnectionInterface::kHaveRemotePrAnswer);
break;
case cricket::BaseSession::STATE_SENTACCEPT:
case cricket::BaseSession::STATE_RECEIVEDACCEPT:
ChangeSignalingState(PeerConnectionInterface::kStable);
break;
case cricket::BaseSession::STATE_RECEIVEDTERMINATE:
ChangeSignalingState(PeerConnectionInterface::kClosed);
break;
default:
break;
}
}
void PeerConnection::OnMessage(talk_base::Message* msg) {
switch (msg->message_id) {
case MSG_SET_SESSIONDESCRIPTION_SUCCESS: {
SetSessionDescriptionMsg* param =
static_cast<SetSessionDescriptionMsg*>(msg->pdata);
param->observer->OnSuccess();
delete param;
break;
}
case MSG_SET_SESSIONDESCRIPTION_FAILED: {
SetSessionDescriptionMsg* param =
static_cast<SetSessionDescriptionMsg*>(msg->pdata);
param->observer->OnFailure(param->error);
delete param;
break;
}
case MSG_GETSTATS: {
GetStatsMsg* param = static_cast<GetStatsMsg*>(msg->pdata);
param->observer->OnComplete(param->reports);
delete param;
break;
}
case MSG_ICECONNECTIONCHANGE: {
observer_->OnIceConnectionChange(ice_connection_state_);
break;
}
case MSG_ICEGATHERINGCHANGE: {
observer_->OnIceGatheringChange(ice_gathering_state_);
break;
}
case MSG_ICECANDIDATE: {
CandidateMsg* data = static_cast<CandidateMsg*>(msg->pdata);
observer_->OnIceCandidate(data->candidate.get());
delete data;
break;
}
case MSG_ICECOMPLETE: {
observer_->OnIceComplete();
break;
}
default:
ASSERT(false && "Not implemented");
break;
}
}
void PeerConnection::OnAddRemoteStream(MediaStreamInterface* stream) {
stats_.AddStream(stream);
observer_->OnAddStream(stream);
}
void PeerConnection::OnRemoveRemoteStream(MediaStreamInterface* stream) {
stream_handler_container_->RemoveRemoteStream(stream);
observer_->OnRemoveStream(stream);
}
void PeerConnection::OnAddDataChannel(DataChannelInterface* data_channel) {
observer_->OnDataChannel(DataChannelProxy::Create(signaling_thread(),
data_channel));
}
void PeerConnection::OnAddRemoteAudioTrack(MediaStreamInterface* stream,
AudioTrackInterface* audio_track,
uint32 ssrc) {
stream_handler_container_->AddRemoteAudioTrack(stream, audio_track, ssrc);
}
void PeerConnection::OnAddRemoteVideoTrack(MediaStreamInterface* stream,
VideoTrackInterface* video_track,
uint32 ssrc) {
stream_handler_container_->AddRemoteVideoTrack(stream, video_track, ssrc);
}
void PeerConnection::OnRemoveRemoteAudioTrack(
MediaStreamInterface* stream,
AudioTrackInterface* audio_track) {
stream_handler_container_->RemoveRemoteTrack(stream, audio_track);
}
void PeerConnection::OnRemoveRemoteVideoTrack(
MediaStreamInterface* stream,
VideoTrackInterface* video_track) {
stream_handler_container_->RemoveRemoteTrack(stream, video_track);
}
void PeerConnection::OnAddLocalAudioTrack(MediaStreamInterface* stream,
AudioTrackInterface* audio_track,
uint32 ssrc) {
stream_handler_container_->AddLocalAudioTrack(stream, audio_track, ssrc);
}
void PeerConnection::OnAddLocalVideoTrack(MediaStreamInterface* stream,
VideoTrackInterface* video_track,
uint32 ssrc) {
stream_handler_container_->AddLocalVideoTrack(stream, video_track, ssrc);
}
void PeerConnection::OnRemoveLocalAudioTrack(MediaStreamInterface* stream,
AudioTrackInterface* audio_track) {
stream_handler_container_->RemoveLocalTrack(stream, audio_track);
}
void PeerConnection::OnRemoveLocalVideoTrack(MediaStreamInterface* stream,
VideoTrackInterface* video_track) {
stream_handler_container_->RemoveLocalTrack(stream, video_track);
}
void PeerConnection::OnRemoveLocalStream(MediaStreamInterface* stream) {
stream_handler_container_->RemoveLocalStream(stream);
}
void PeerConnection::OnIceConnectionChange(
PeerConnectionInterface::IceConnectionState new_state) {
ice_connection_state_ = new_state;
signaling_thread()->Post(this, MSG_ICECONNECTIONCHANGE);
}
void PeerConnection::OnIceGatheringChange(
PeerConnectionInterface::IceGatheringState new_state) {
if (IsClosed()) {
return;
}
ice_gathering_state_ = new_state;
signaling_thread()->Post(this, MSG_ICEGATHERINGCHANGE);
}
void PeerConnection::OnIceCandidate(const IceCandidateInterface* candidate) {
JsepIceCandidate* candidate_copy = NULL;
if (candidate) {
// TODO(ronghuawu): Make IceCandidateInterface reference counted instead
// of making a copy.
candidate_copy = new JsepIceCandidate(candidate->sdp_mid(),
candidate->sdp_mline_index(),
candidate->candidate());
}
// The Post takes the ownership of the |candidate_copy|.
signaling_thread()->Post(this, MSG_ICECANDIDATE,
new CandidateMsg(candidate_copy));
}
void PeerConnection::OnIceComplete() {
signaling_thread()->Post(this, MSG_ICECOMPLETE);
}
void PeerConnection::ChangeSignalingState(
PeerConnectionInterface::SignalingState signaling_state) {
signaling_state_ = signaling_state;
if (signaling_state == kClosed) {
ice_connection_state_ = kIceConnectionClosed;
observer_->OnIceConnectionChange(ice_connection_state_);
if (ice_gathering_state_ != kIceGatheringComplete) {
ice_gathering_state_ = kIceGatheringComplete;
observer_->OnIceGatheringChange(ice_gathering_state_);
}
}
observer_->OnSignalingChange(signaling_state_);
observer_->OnStateChange(PeerConnectionObserver::kSignalingState);
}
} // namespace webrtc