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peer-connection-wrapper.cpp
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#include "peer-connection-wrapper.h"
#include "data-channel-wrapper.h"
#include "media-track-wrapper.h"
#include "media-video-wrapper.h"
#include "media-audio-wrapper.h"
#include "plog/Log.h"
#include <cctype>
#include <sstream>
Napi::FunctionReference PeerConnectionWrapper::constructor;
std::unordered_set<PeerConnectionWrapper *> PeerConnectionWrapper::instances;
void PeerConnectionWrapper::CloseAll()
{
PLOG_DEBUG << "CloseAll() called";
auto copy(instances);
for (auto inst : copy)
inst->doClose();
}
void PeerConnectionWrapper::ResetCallbacksAll()
{
PLOG_DEBUG << "ResetCallbacksAll() called";
auto copy(instances);
for (auto inst : copy)
inst->doResetCallbacks();
}
Napi::Object PeerConnectionWrapper::Init(Napi::Env env, Napi::Object exports)
{
Napi::HandleScope scope(env);
Napi::Function func = DefineClass(
env,
"PeerConnection",
{
InstanceMethod("close", &PeerConnectionWrapper::close),
InstanceMethod("destroy", &PeerConnectionWrapper::destroy),
InstanceMethod("setLocalDescription", &PeerConnectionWrapper::setLocalDescription),
InstanceMethod("setRemoteDescription", &PeerConnectionWrapper::setRemoteDescription),
InstanceMethod("localDescription", &PeerConnectionWrapper::localDescription),
InstanceMethod("remoteDescription", &PeerConnectionWrapper::remoteDescription),
InstanceMethod("addRemoteCandidate", &PeerConnectionWrapper::addRemoteCandidate),
InstanceMethod("createDataChannel", &PeerConnectionWrapper::createDataChannel),
InstanceMethod("addTrack", &PeerConnectionWrapper::addTrack),
InstanceMethod("hasMedia", &PeerConnectionWrapper::hasMedia),
InstanceMethod("state", &PeerConnectionWrapper::state),
InstanceMethod("iceState", &PeerConnectionWrapper::iceState),
InstanceMethod("signalingState", &PeerConnectionWrapper::signalingState),
InstanceMethod("gatheringState", &PeerConnectionWrapper::gatheringState),
InstanceMethod("onLocalDescription", &PeerConnectionWrapper::onLocalDescription),
InstanceMethod("onLocalCandidate", &PeerConnectionWrapper::onLocalCandidate),
InstanceMethod("onStateChange", &PeerConnectionWrapper::onStateChange),
InstanceMethod("onIceStateChange", &PeerConnectionWrapper::onIceStateChange),
InstanceMethod("onSignalingStateChange", &PeerConnectionWrapper::onSignalingStateChange),
InstanceMethod("onGatheringStateChange", &PeerConnectionWrapper::onGatheringStateChange),
InstanceMethod("onDataChannel", &PeerConnectionWrapper::onDataChannel),
InstanceMethod("onTrack", &PeerConnectionWrapper::onTrack),
InstanceMethod("bytesSent", &PeerConnectionWrapper::bytesSent),
InstanceMethod("bytesReceived", &PeerConnectionWrapper::bytesReceived),
InstanceMethod("rtt", &PeerConnectionWrapper::rtt),
InstanceMethod("getSelectedCandidatePair", &PeerConnectionWrapper::getSelectedCandidatePair),
InstanceMethod("maxDataChannelId", &PeerConnectionWrapper::maxDataChannelId),
InstanceMethod("maxMessageSize", &PeerConnectionWrapper::maxMessageSize),
});
constructor = Napi::Persistent(func);
constructor.SuppressDestruct();
exports.Set("PeerConnection", func);
return exports;
}
PeerConnectionWrapper::PeerConnectionWrapper(const Napi::CallbackInfo &info) : Napi::ObjectWrap<PeerConnectionWrapper>(info)
{
PLOG_DEBUG << "Constructor called";
Napi::Env env = info.Env();
int length = info.Length();
// We expect (String, Object, Function) as param
if (length < 2 || !info[0].IsString() || !info[1].IsObject())
{
Napi::TypeError::New(env, "Peer Name (String) and Configuration (Object) expected").ThrowAsJavaScriptException();
return;
}
// Peer Name
mPeerName = info[0].As<Napi::String>().ToString();
// Peer Config
rtc::Configuration rtcConfig;
Napi::Object config = info[1].As<Napi::Object>();
if (!config.Get("iceServers").IsArray())
{
Napi::TypeError::New(env, "iceServers(Array) expected").ThrowAsJavaScriptException();
return;
}
Napi::Array iceServers = config.Get("iceServers").As<Napi::Array>();
for (uint32_t i = 0; i < iceServers.Length(); i++)
{
if (iceServers.Get(i).IsString())
rtcConfig.iceServers.emplace_back(iceServers.Get(i).As<Napi::String>().ToString());
else
{
if (!iceServers.Get(i).IsObject())
{
Napi::TypeError::New(env, "IceServer config should be a string Or an object").ThrowAsJavaScriptException();
return;
}
Napi::Object iceServer = iceServers.Get(i).As<Napi::Object>();
if (!iceServer.Get("hostname").IsString() || !iceServer.Get("port").IsNumber())
{
Napi::TypeError::New(env, "IceServer config error (hostname OR/AND port is not suitable)").ThrowAsJavaScriptException();
return;
}
if (iceServer.Get("relayType").IsString() &&
(!iceServer.Get("username").IsString() || !iceServer.Get("password").IsString()))
{
Napi::TypeError::New(env, "IceServer config error (username AND password is needed)").ThrowAsJavaScriptException();
return;
}
if (iceServer.Get("relayType").IsString())
{
std::string relayTypeStr = iceServer.Get("relayType").As<Napi::String>();
rtc::IceServer::RelayType relayType = rtc::IceServer::RelayType::TurnUdp;
if (relayTypeStr.compare("TurnTcp") == 0)
relayType = rtc::IceServer::RelayType::TurnTcp;
if (relayTypeStr.compare("TurnTls") == 0)
relayType = rtc::IceServer::RelayType::TurnTls;
rtcConfig.iceServers.emplace_back(
rtc::IceServer(iceServer.Get("hostname").As<Napi::String>(),
uint16_t(iceServer.Get("port").As<Napi::Number>().Uint32Value()),
iceServer.Get("username").As<Napi::String>(),
iceServer.Get("password").As<Napi::String>(),
relayType));
}
else
{
rtcConfig.iceServers.emplace_back(
rtc::IceServer(
iceServer.Get("hostname").As<Napi::String>(),
uint16_t(iceServer.Get("port").As<Napi::Number>().Uint32Value())));
}
}
}
// Proxy Server
if (config.Get("proxyServer").IsObject())
{
Napi::Object proxyServer = config.Get("proxyServer").As<Napi::Object>();
// IP
std::string ip = proxyServer.Get("ip").As<Napi::String>();
// Port
uint16_t port = proxyServer.Get("port").As<Napi::Number>().Uint32Value();
// Type
std::string strType = proxyServer.Get("type").As<Napi::String>().ToString();
rtc::ProxyServer::Type type = rtc::ProxyServer::Type::Http;
if (strType == "Socks5")
type = rtc::ProxyServer::Type::Socks5;
// Username & Password
std::string username = "";
std::string password = "";
if (proxyServer.Get("username").IsString())
username = proxyServer.Get("username").As<Napi::String>().ToString();
if (proxyServer.Get("password").IsString())
username = proxyServer.Get("password").As<Napi::String>().ToString();
rtcConfig.proxyServer = rtc::ProxyServer(type, ip, port, username, password);
}
// bind address, libjuice only
if (config.Get("bindAddress").IsString())
rtcConfig.bindAddress = config.Get("bindAddress").As<Napi::String>().ToString();
// Port Ranges
if (config.Get("portRangeBegin").IsNumber())
rtcConfig.portRangeBegin = config.Get("portRangeBegin").As<Napi::Number>().Uint32Value();
if (config.Get("portRangeEnd").IsNumber())
rtcConfig.portRangeEnd = config.Get("portRangeEnd").As<Napi::Number>().Uint32Value();
// enableIceTcp option
if (config.Get("enableIceTcp").IsBoolean())
rtcConfig.enableIceTcp = config.Get("enableIceTcp").As<Napi::Boolean>();
// enableIceUdpMux option
if (config.Get("enableIceUdpMux").IsBoolean())
rtcConfig.enableIceUdpMux = config.Get("enableIceUdpMux").As<Napi::Boolean>();
// disableAutoNegotiation option
if (config.Get("disableAutoNegotiation").IsBoolean())
rtcConfig.disableAutoNegotiation = config.Get("disableAutoNegotiation").As<Napi::Boolean>();
// forceMediaTransport option
if (config.Get("forceMediaTransport").IsBoolean())
rtcConfig.forceMediaTransport = config.Get("forceMediaTransport").As<Napi::Boolean>();
// Max Message Size
if (config.Get("maxMessageSize").IsNumber())
rtcConfig.maxMessageSize = config.Get("maxMessageSize").As<Napi::Number>().Int32Value();
// MTU
if (config.Get("mtu").IsNumber())
rtcConfig.mtu = config.Get("mtu").As<Napi::Number>().Int32Value();
// ICE transport policy
if (!config.Get("iceTransportPolicy").IsUndefined())
{
if (!config.Get("iceTransportPolicy").IsString())
{
Napi::TypeError::New(env, "Invalid ICE transport policy, expected string").ThrowAsJavaScriptException();
return;
}
std::string strPolicy = config.Get("iceTransportPolicy").As<Napi::String>().ToString();
if (strPolicy == "all")
rtcConfig.iceTransportPolicy = rtc::TransportPolicy::All;
else if (strPolicy == "relay")
rtcConfig.iceTransportPolicy = rtc::TransportPolicy::Relay;
else
{
Napi::TypeError::New(env, "Unknown ICE transport policy").ThrowAsJavaScriptException();
return;
}
}
// Create peer-connection
try
{
PLOG_DEBUG << "Creating a new peer";
mRtcPeerConnPtr = std::make_unique<rtc::PeerConnection>(rtcConfig);
}
catch (std::exception &ex)
{
Napi::Error::New(env, std::string("libdatachannel error while creating peer connection: ") + ex.what()).ThrowAsJavaScriptException();
return;
}
instances.insert(this);
}
PeerConnectionWrapper::~PeerConnectionWrapper()
{
PLOG_DEBUG << "Destructor called";
doDestroy();
}
void PeerConnectionWrapper::doClose()
{
PLOG_DEBUG << "doClose() called";
if (mRtcPeerConnPtr)
{
PLOG_DEBUG << "Closing...";
try
{
mRtcPeerConnPtr->close();
mRtcPeerConnPtr.reset();
}
catch (std::exception &ex)
{
std::cerr << std::string("libdatachannel error while closing peer connection: ") + ex.what() << std::endl;
return;
}
}
}
void PeerConnectionWrapper::close(const Napi::CallbackInfo &info)
{
PLOG_DEBUG << "close() called";
doClose();
}
void PeerConnectionWrapper::doDestroy()
{
PLOG_DEBUG << "doDestroy() called";
doClose();
doResetCallbacks();
}
void PeerConnectionWrapper::doResetCallbacks()
{
PLOG_DEBUG << "doResetCallbacks() called";
mOnLocalDescriptionCallback.reset();
mOnLocalCandidateCallback.reset();
mOnStateChangeCallback.reset();
mOnSignalingStateChangeCallback.reset();
mOnGatheringStateChangeCallback.reset();
mOnDataChannelCallback.reset();
mOnTrackCallback.reset();
instances.erase(this);
}
void PeerConnectionWrapper::destroy(const Napi::CallbackInfo &info)
{
PLOG_DEBUG << "destroy() called";
doDestroy();
}
void PeerConnectionWrapper::setLocalDescription(const Napi::CallbackInfo &info)
{
PLOG_DEBUG << "setLocalDescription() called";
Napi::Env env = info.Env();
int length = info.Length();
if (!mRtcPeerConnPtr)
{
Napi::Error::New(env, "setLocalDescription() called on destroyed peer connection").ThrowAsJavaScriptException();
return;
}
rtc::Description::Type type = rtc::Description::Type::Unspec;
// optional
if (length > 0)
{
if (!info[0].IsString())
{
Napi::TypeError::New(env, "type (String) expected").ThrowAsJavaScriptException();
return;
}
std::string typeStr = info[0].As<Napi::String>().ToString();
// Accept uppercase first letter for backward compatibility
if (typeStr.size() > 0)
typeStr[0] = std::tolower(typeStr[0]);
if (typeStr == "answer")
type = rtc::Description::Type::Answer;
else if (typeStr == "offer")
type = rtc::Description::Type::Offer;
else if (typeStr == "pranswer")
type = rtc::Description::Type::Pranswer;
else if (typeStr == "rollback")
type = rtc::Description::Type::Rollback;
}
mRtcPeerConnPtr->setLocalDescription(type);
}
void PeerConnectionWrapper::setRemoteDescription(const Napi::CallbackInfo &info)
{
PLOG_DEBUG << "setRemoteDescription() called";
Napi::Env env = info.Env();
int length = info.Length();
if (!mRtcPeerConnPtr)
{
Napi::Error::New(env, "setRemoteDescription() called on destroyed peer connection").ThrowAsJavaScriptException();
return;
}
if (length < 2 || !info[0].IsString() || !info[1].IsString())
{
Napi::TypeError::New(info.Env(), "String,String expected").ThrowAsJavaScriptException();
return;
}
std::string sdp = info[0].As<Napi::String>().ToString();
std::string type = info[1].As<Napi::String>().ToString();
try
{
rtc::Description desc(sdp, type);
mRtcPeerConnPtr->setRemoteDescription(desc);
}
catch (std::exception &ex)
{
Napi::Error::New(env, std::string("libdatachannel error while adding remote description: ") + ex.what()).ThrowAsJavaScriptException();
return;
}
}
Napi::Value PeerConnectionWrapper::localDescription(const Napi::CallbackInfo &info)
{
PLOG_DEBUG << "localDescription() called";
Napi::Env env = info.Env();
std::optional<rtc::Description> desc = mRtcPeerConnPtr ? mRtcPeerConnPtr->localDescription() : std::nullopt;
// Return JS null if no description
if (!desc.has_value())
{
return env.Null();
}
Napi::Object obj = Napi::Object::New(env);
obj.Set("type", desc->typeString());
obj.Set("sdp", desc.value());
return obj;
}
Napi::Value PeerConnectionWrapper::remoteDescription(const Napi::CallbackInfo &info)
{
Napi::Env env = info.Env();
std::optional<rtc::Description> desc = mRtcPeerConnPtr ? mRtcPeerConnPtr->remoteDescription() : std::nullopt;
// Return JS null if no description
if (!desc.has_value())
{
return env.Null();
}
Napi::Object obj = Napi::Object::New(env);
obj.Set("type", desc->typeString());
obj.Set("sdp", desc.value());
return obj;
}
void PeerConnectionWrapper::addRemoteCandidate(const Napi::CallbackInfo &info)
{
PLOG_DEBUG << "addRemoteCandidate() called";
Napi::Env env = info.Env();
int length = info.Length();
if (!mRtcPeerConnPtr)
{
Napi::Error::New(env, "addRemoteCandidate() called on destroyed peer connection").ThrowAsJavaScriptException();
return;
}
if (length < 2 || !info[0].IsString() || !info[1].IsString())
{
Napi::TypeError::New(info.Env(), "String, String expected").ThrowAsJavaScriptException();
return;
}
try
{
std::string candidate = info[0].As<Napi::String>().ToString();
std::string mid = info[0].As<Napi::String>().ToString();
mRtcPeerConnPtr->addRemoteCandidate(rtc::Candidate(candidate, mid));
}
catch (std::exception &ex)
{
Napi::Error::New(env, std::string("libdatachannel error while adding remote candidate: ") + ex.what()).ThrowAsJavaScriptException();
return;
}
}
Napi::Value PeerConnectionWrapper::createDataChannel(const Napi::CallbackInfo &info)
{
PLOG_DEBUG << "createDataChannel() called";
Napi::Env env = info.Env();
int length = info.Length();
if (!mRtcPeerConnPtr)
{
Napi::Error::New(env, "createDataChannel() called on destroyed peer connection").ThrowAsJavaScriptException();
return info.Env().Null();
}
if (length < 1 || !info[0].IsString())
{
Napi::TypeError::New(env, "Data Channel Label expected").ThrowAsJavaScriptException();
return info.Env().Null();
}
// Optional Params
rtc::DataChannelInit init;
if (length > 1)
{
if (!info[1].IsObject())
{
Napi::TypeError::New(env, "Data Channel Init Config expected(As Object)").ThrowAsJavaScriptException();
return info.Env().Null();
}
Napi::Object initConfig = info[1].As<Napi::Object>();
if (!initConfig.Get("protocol").IsUndefined())
{
if (!initConfig.Get("protocol").IsString())
{
Napi::TypeError::New(env, "Wrong DataChannel Init Config (protocol)").ThrowAsJavaScriptException();
return info.Env().Null();
}
init.protocol = initConfig.Get("protocol").As<Napi::String>();
}
if (!initConfig.Get("negotiated").IsUndefined())
{
if (!initConfig.Get("negotiated").IsBoolean())
{
Napi::TypeError::New(env, "Wrong DataChannel Init Config (negotiated)").ThrowAsJavaScriptException();
return info.Env().Null();
}
init.negotiated = initConfig.Get("negotiated").As<Napi::Boolean>();
}
if (!initConfig.Get("id").IsUndefined())
{
if (!initConfig.Get("id").IsNumber())
{
Napi::TypeError::New(env, "Wrong DataChannel Init Config (id)").ThrowAsJavaScriptException();
return info.Env().Null();
}
init.id = uint16_t(initConfig.Get("id").As<Napi::Number>().Uint32Value());
}
// Deprecated reliability object, kept for retro-compatibility
if (!initConfig.Get("reliability").IsUndefined())
{
if (!initConfig.Get("reliability").IsObject())
{
Napi::TypeError::New(env, "Wrong DataChannel Init Config (reliability)").ThrowAsJavaScriptException();
return info.Env().Null();
}
Napi::Object reliability = initConfig.Get("reliability").As<Napi::Object>();
if (!reliability.Get("type").IsUndefined())
{
if (!reliability.Get("type").IsNumber())
{
Napi::TypeError::New(env, "Wrong Reliability Config (type)").ThrowAsJavaScriptException();
return info.Env().Null();
}
switch (reliability.Get("type").As<Napi::Number>().Uint32Value())
{
case 0:
init.reliability.type = rtc::Reliability::Type::Reliable;
break;
case 1:
init.reliability.type = rtc::Reliability::Type::Rexmit;
break;
case 2:
init.reliability.type = rtc::Reliability::Type::Timed;
break;
default:
Napi::TypeError::New(env, "Unknown DataChannel Reliability Type").ThrowAsJavaScriptException();
return info.Env().Null();
}
}
if (!reliability.Get("unordered").IsUndefined())
{
if (!reliability.Get("unordered").IsBoolean())
{
Napi::TypeError::New(env, "Wrong reliability Config (unordered)").ThrowAsJavaScriptException();
return info.Env().Null();
}
init.reliability.unordered = reliability.Get("unordered").As<Napi::Boolean>();
}
if (!reliability.Get("rexmit").IsUndefined())
{
if (!reliability.Get("rexmit").IsNumber())
{
Napi::TypeError::New(env, "Wrong Reliability Config (rexmit)").ThrowAsJavaScriptException();
return info.Env().Null();
}
switch (reliability.Get("type").As<Napi::Number>().Uint32Value())
{
case 1:
init.reliability.rexmit = static_cast<int>(reliability.Get("rexmit").As<Napi::Number>().ToNumber());
break;
case 2:
init.reliability.rexmit = std::chrono::milliseconds(reliability.Get("rexmit").As<Napi::Number>().Uint32Value());
break;
}
}
}
// Reliability parameters
if (!initConfig.Get("ordered").IsUndefined())
{
if (!initConfig.Get("ordered").IsBoolean())
{
Napi::TypeError::New(env, "Wrong DataChannel Init Config (ordered)").ThrowAsJavaScriptException();
return info.Env().Null();
}
init.reliability.unordered = !initConfig.Get("ordered").As<Napi::Boolean>();
}
if (initConfig.Get("maxPacketLifeTime").IsNumber() && initConfig.Get("maxRetransmits").IsNumber())
{
Napi::TypeError::New(env, "Wrong DataChannel Init Config, maxPacketLifeTime and maxRetransmits are exclusive").ThrowAsJavaScriptException();
return info.Env().Null();
}
if (initConfig.Get("maxPacketLifeTime").IsNumber())
{
init.reliability.type = rtc::Reliability::Type::Timed;
init.reliability.rexmit = std::chrono::milliseconds(initConfig.Get("maxPacketLifeTime").As<Napi::Number>().Uint32Value());
}
else if (initConfig.Get("maxRetransmits").IsNumber())
{
init.reliability.type = rtc::Reliability::Type::Rexmit;
init.reliability.rexmit = int(initConfig.Get("maxRetransmits").As<Napi::Number>().Uint32Value());
}
else
{
init.reliability.type = rtc::Reliability::Type::Reliable;
}
}
try
{
std::string label = info[0].As<Napi::String>().ToString();
std::shared_ptr<rtc::DataChannel> dataChannel = mRtcPeerConnPtr->createDataChannel(label, std::move(init));
auto instance = DataChannelWrapper::constructor.New({Napi::External<std::shared_ptr<rtc::DataChannel>>::New(info.Env(), &dataChannel)});
PLOG_DEBUG << "Data Channel created. Label: " << label;
return instance;
}
catch (std::exception &ex)
{
Napi::Error::New(env, std::string("libdatachannel error while creating datachannel: ") + ex.what()).ThrowAsJavaScriptException();
return info.Env().Null();
}
}
void PeerConnectionWrapper::onLocalDescription(const Napi::CallbackInfo &info)
{
PLOG_DEBUG << "onLocalDescription() called";
Napi::Env env = info.Env();
int length = info.Length();
if (!mRtcPeerConnPtr)
{
Napi::Error::New(env, "onLocalDescription() called on destroyed peer connection").ThrowAsJavaScriptException();
return;
}
if (length < 1 || !info[0].IsFunction())
{
Napi::TypeError::New(env, "Function expected").ThrowAsJavaScriptException();
return;
}
// Callback
mOnLocalDescriptionCallback = std::make_unique<ThreadSafeCallback>(info[0].As<Napi::Function>());
mRtcPeerConnPtr->onLocalDescription([&](rtc::Description sdp)
{
PLOG_DEBUG << "onLocalDescription cb received from rtc";
if (mOnLocalDescriptionCallback)
mOnLocalDescriptionCallback->call([this, sdp = std::move(sdp)](Napi::Env env, std::vector<napi_value> &args) {
PLOG_DEBUG << "mOnLocalDescriptionCallback call(1)";
// Check the peer connection is not closed
if(instances.find(this) == instances.end())
throw ThreadSafeCallback::CancelException();
// This will run in main thread and needs to construct the
// arguments for the call
args = {
Napi::String::New(env, std::string(sdp)),
Napi::String::New(env, sdp.typeString())};
PLOG_DEBUG << "mOnLocalDescriptionCallback call(2)";
}); });
}
void PeerConnectionWrapper::onLocalCandidate(const Napi::CallbackInfo &info)
{
PLOG_DEBUG << "onLocalCandidate() called";
Napi::Env env = info.Env();
int length = info.Length();
if (!mRtcPeerConnPtr)
{
Napi::Error::New(env, "onLocalCandidate() called on destroyed peer connection").ThrowAsJavaScriptException();
return;
}
if (length < 1 || !info[0].IsFunction())
{
Napi::TypeError::New(env, "Function expected").ThrowAsJavaScriptException();
return;
}
// Callback
mOnLocalCandidateCallback = std::make_unique<ThreadSafeCallback>(info[0].As<Napi::Function>());
mRtcPeerConnPtr->onLocalCandidate([&](rtc::Candidate cand)
{
PLOG_DEBUG << "onLocalCandidate cb received from rtc";
if (mOnLocalCandidateCallback)
mOnLocalCandidateCallback->call([this, cand = std::move(cand)](Napi::Env env, std::vector<napi_value> &args) {
PLOG_DEBUG << "mOnLocalCandidateCallback call(1)";
// Check the peer connection is not closed
if(instances.find(this) == instances.end())
throw ThreadSafeCallback::CancelException();
// This will run in main thread and needs to construct the
// arguments for the call
args = {
Napi::String::New(env, std::string(cand)),
Napi::String::New(env, cand.mid())};
PLOG_DEBUG << "mOnLocalCandidateCallback call(2)";
}); });
}
void PeerConnectionWrapper::onStateChange(const Napi::CallbackInfo &info)
{
PLOG_DEBUG << "onStateChange() called";
Napi::Env env = info.Env();
int length = info.Length();
if (!mRtcPeerConnPtr)
{
Napi::Error::New(env, "onStateChange() called on destroyed peer connection").ThrowAsJavaScriptException();
return;
}
if (length < 1 || !info[0].IsFunction())
{
Napi::TypeError::New(env, "Function expected").ThrowAsJavaScriptException();
return;
}
// Callback
mOnStateChangeCallback = std::make_unique<ThreadSafeCallback>(info[0].As<Napi::Function>());
mRtcPeerConnPtr->onStateChange([&](rtc::PeerConnection::State state)
{
PLOG_DEBUG << "onStateChange cb received from rtc";
if (mOnStateChangeCallback)
mOnStateChangeCallback->call([this, state](Napi::Env env, std::vector<napi_value> &args) {
PLOG_DEBUG << "mOnStateChangeCallback call(1)";
if(instances.find(this) == instances.end())
throw ThreadSafeCallback::CancelException();
// This will run in main thread and needs to construct the
// arguments for the call
std::ostringstream stream;
stream << state;
args = {Napi::String::New(env, stream.str())};
PLOG_DEBUG << "mOnStateChangeCallback call(2)";
}); });
}
void PeerConnectionWrapper::onIceStateChange(const Napi::CallbackInfo &info)
{
PLOG_DEBUG << "onIceStateChange() called";
Napi::Env env = info.Env();
int length = info.Length();
if (!mRtcPeerConnPtr)
{
Napi::Error::New(env, "onIceStateChange() called on destroyed peer connection").ThrowAsJavaScriptException();
return;
}
if (length < 1 || !info[0].IsFunction())
{
Napi::TypeError::New(env, "Function expected").ThrowAsJavaScriptException();
return;
}
// Callback
mOnIceStateChangeCallback = std::make_unique<ThreadSafeCallback>(info[0].As<Napi::Function>());
mRtcPeerConnPtr->onIceStateChange([&](rtc::PeerConnection::IceState state)
{
PLOG_DEBUG << "onIceStateChange cb received from rtc";
if (mOnIceStateChangeCallback)
mOnIceStateChangeCallback->call([this, state](Napi::Env env, std::vector<napi_value> &args) {
PLOG_DEBUG << "mOnIceStateChangeCallback call(1)";
if(instances.find(this) == instances.end())
throw ThreadSafeCallback::CancelException();
// This will run in main thread and needs to construct the
// arguments for the call
std::ostringstream stream;
stream << state;
args = {Napi::String::New(env, stream.str())};
PLOG_DEBUG << "mOnIceStateChangeCallback call(2)";
}); });
}
void PeerConnectionWrapper::onSignalingStateChange(const Napi::CallbackInfo &info)
{
PLOG_DEBUG << "onSignalingStateChange() called";
Napi::Env env = info.Env();
int length = info.Length();
if (!mRtcPeerConnPtr)
{
Napi::Error::New(env, "onSignalingStateChange() called on destroyed peer connection").ThrowAsJavaScriptException();
return;
}
if (length < 1 || !info[0].IsFunction())
{
Napi::TypeError::New(env, "Function expected").ThrowAsJavaScriptException();
return;
}
// Callback
mOnSignalingStateChangeCallback = std::make_unique<ThreadSafeCallback>(info[0].As<Napi::Function>());
mRtcPeerConnPtr->onSignalingStateChange([&](rtc::PeerConnection::SignalingState state)
{
PLOG_DEBUG << "onSignalingStateChange cb received from rtc";
if (mOnSignalingStateChangeCallback)
mOnSignalingStateChangeCallback->call([this, state](Napi::Env env, std::vector<napi_value> &args) {
PLOG_DEBUG << "mOnSignalingStateChangeCallback call(1)";
// Check the peer connection is not closed
if(instances.find(this) == instances.end())
throw ThreadSafeCallback::CancelException();
// This will run in main thread and needs to construct the
// arguments for the call
std::ostringstream stream;
stream << state;
args = {Napi::String::New(env, stream.str())};
PLOG_DEBUG << "mOnSignalingStateChangeCallback call(2)";
}); });
}
void PeerConnectionWrapper::onGatheringStateChange(const Napi::CallbackInfo &info)
{
PLOG_DEBUG << "onGatheringStateChange() called";
Napi::Env env = info.Env();
int length = info.Length();
if (!mRtcPeerConnPtr)
{
Napi::Error::New(env, "onGatheringStateChange() called on destroyed peer connection").ThrowAsJavaScriptException();
return;
}
if (length < 1 || !info[0].IsFunction())
{
Napi::TypeError::New(env, "Function expected").ThrowAsJavaScriptException();
return;
}
// Callback
mOnGatheringStateChangeCallback = std::make_unique<ThreadSafeCallback>(info[0].As<Napi::Function>());
mRtcPeerConnPtr->onGatheringStateChange([&](rtc::PeerConnection::GatheringState state)
{
PLOG_DEBUG << "onGatheringStateChange cb received from rtc";
if (mOnGatheringStateChangeCallback)
mOnGatheringStateChangeCallback->call([this, state](Napi::Env env, std::vector<napi_value> &args) {
PLOG_DEBUG << "mOnGatheringStateChangeCallback call(1)";
// Check the peer connection is not closed
if(instances.find(this) == instances.end())
throw ThreadSafeCallback::CancelException();
// This will run in main thread and needs to construct the
// arguments for the call
std::ostringstream stream;
stream << state;
args = {Napi::String::New(env, stream.str())};
PLOG_DEBUG << "mOnGatheringStateChangeCallback call(2)";
}); });
}
void PeerConnectionWrapper::onDataChannel(const Napi::CallbackInfo &info)
{
PLOG_DEBUG << "onDataChannel() called";
Napi::Env env = info.Env();
int length = info.Length();
if (!mRtcPeerConnPtr)
{
Napi::Error::New(env, "onDataChannel() called on destroyed peer connection").ThrowAsJavaScriptException();
return;
}
if (length < 1 || !info[0].IsFunction())
{
Napi::TypeError::New(env, "Function expected").ThrowAsJavaScriptException();
return;
}
// Callback
mOnDataChannelCallback = std::make_unique<ThreadSafeCallback>(info[0].As<Napi::Function>());
mRtcPeerConnPtr->onDataChannel([&](std::shared_ptr<rtc::DataChannel> dc)
{
PLOG_DEBUG << "onDataChannel cb received from rtc";
if (mOnDataChannelCallback)
mOnDataChannelCallback->call([this, dc](Napi::Env env, std::vector<napi_value> &args) {
PLOG_DEBUG << "mOnDataChannelCallback call(1)";
// Check the peer connection is not closed
if(instances.find(this) == instances.end())
throw ThreadSafeCallback::CancelException();
// This will run in main thread and needs to construct the
// arguments for the call
std::shared_ptr<rtc::DataChannel> dataChannel = dc;
auto instance = DataChannelWrapper::constructor.New({Napi::External<std::shared_ptr<rtc::DataChannel>>::New(env, &dataChannel)});
args = {instance};
PLOG_DEBUG << "mOnDataChannelCallback call(2)";
}); });
}
Napi::Value PeerConnectionWrapper::bytesSent(const Napi::CallbackInfo &info)
{
PLOG_DEBUG << "bytesSent() called";
Napi::Env env = info.Env();
if (!mRtcPeerConnPtr)
{
return Napi::Number::New(info.Env(), 0);
}
try
{
return Napi::Number::New(env, mRtcPeerConnPtr->bytesSent());
}
catch (std::exception &ex)
{
Napi::Error::New(env, std::string("libdatachannel error: ") + ex.what()).ThrowAsJavaScriptException();
return Napi::Number::New(info.Env(), 0);
}
}
Napi::Value PeerConnectionWrapper::bytesReceived(const Napi::CallbackInfo &info)
{
PLOG_DEBUG << "bytesReceived() called";
Napi::Env env = info.Env();
if (!mRtcPeerConnPtr)
{
return Napi::Number::New(info.Env(), 0);
}
try
{
return Napi::Number::New(env, mRtcPeerConnPtr->bytesReceived());
}
catch (std::exception &ex)
{
Napi::Error::New(env, std::string("libdatachannel error: ") + ex.what()).ThrowAsJavaScriptException();
return Napi::Number::New(info.Env(), 0);
}
}
Napi::Value PeerConnectionWrapper::rtt(const Napi::CallbackInfo &info)
{
PLOG_DEBUG << "rtt() called";
Napi::Env env = info.Env();
if (!mRtcPeerConnPtr)
{
return Napi::Number::New(info.Env(), 0);
}
try
{
return Napi::Number::New(env, mRtcPeerConnPtr->rtt().value_or(std::chrono::milliseconds(-1)).count());
}
catch (std::exception &ex)
{
Napi::Error::New(env, std::string("libdatachannel error: ") + ex.what()).ThrowAsJavaScriptException();
return Napi::Number::New(info.Env(), -1);
}
}
Napi::Value PeerConnectionWrapper::getSelectedCandidatePair(const Napi::CallbackInfo &info)
{
PLOG_DEBUG << "getSelectedCandidatePair() called";
Napi::Env env = info.Env();
if (!mRtcPeerConnPtr)
{
return env.Null();
}
try
{
rtc::Candidate local, remote;
if (!mRtcPeerConnPtr->getSelectedCandidatePair(&local, &remote))
return env.Null();
Napi::Object retvalue = Napi::Object::New(env);
Napi::Object localObj = Napi::Object::New(env);
Napi::Object remoteObj = Napi::Object::New(env);
localObj.Set("address", local.address().value_or("?"));
localObj.Set("port", local.port().value_or(0));
localObj.Set("type", candidateTypeToString(local.type()));
localObj.Set("transportType", candidateTransportTypeToString(local.transportType()));
localObj.Set("candidate", local.candidate());
localObj.Set("mid", local.mid());
localObj.Set("priority", local.priority());
remoteObj.Set("address", remote.address().value_or("?"));
remoteObj.Set("port", remote.port().value_or(0));
remoteObj.Set("type", candidateTypeToString(remote.type()));
remoteObj.Set("transportType", candidateTransportTypeToString(remote.transportType()));
remoteObj.Set("candidate", remote.candidate());
remoteObj.Set("mid", remote.mid());
remoteObj.Set("priority", remote.priority());