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Diffstat (limited to 'dom/media/webrtc/jsapi/PeerConnectionImpl.h')
| -rw-r--r-- | dom/media/webrtc/jsapi/PeerConnectionImpl.h | 911 |
1 files changed, 911 insertions, 0 deletions
diff --git a/dom/media/webrtc/jsapi/PeerConnectionImpl.h b/dom/media/webrtc/jsapi/PeerConnectionImpl.h new file mode 100644 index 0000000000..7f2d0ca511 --- /dev/null +++ b/dom/media/webrtc/jsapi/PeerConnectionImpl.h @@ -0,0 +1,911 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this file, + * You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifndef _PEER_CONNECTION_IMPL_H_ +#define _PEER_CONNECTION_IMPL_H_ + +#include <string> +#include <vector> +#include <map> +#include <cmath> + +#include "prlock.h" +#include "mozilla/RefPtr.h" +#include "nsComponentManagerUtils.h" +#include "nsPIDOMWindow.h" +#include "nsIUUIDGenerator.h" +#include "nsIThread.h" +#include "mozilla/Mutex.h" +#include "mozilla/Attributes.h" + +// Work around nasty macro in webrtc/voice_engine/voice_engine_defines.h +#ifdef GetLastError +# undef GetLastError +#endif + +#include "jsep/JsepSession.h" +#include "jsep/JsepSessionImpl.h" +#include "sdp/SdpMediaSection.h" + +#include "mozilla/ErrorResult.h" +#include "jsapi/PacketDumper.h" +#include "mozilla/dom/RTCPeerConnectionBinding.h" // mozPacketDumpType, maybe move? +#include "mozilla/dom/PeerConnectionImplBinding.h" // ChainedOperation +#include "mozilla/dom/RTCRtpTransceiverBinding.h" +#include "mozilla/dom/RTCConfigurationBinding.h" +#include "PrincipalChangeObserver.h" +#include "mozilla/dom/PromiseNativeHandler.h" + +#include "mozilla/TimeStamp.h" +#include "mozilla/net/DataChannel.h" +#include "mozilla/TupleCycleCollection.h" +#include "VideoUtils.h" +#include "VideoSegment.h" +#include "mozilla/dom/RTCStatsReportBinding.h" +#include "mozilla/PeerIdentity.h" +#include "RTCStatsIdGenerator.h" +#include "RTCStatsReport.h" + +#include "mozilla/net/StunAddrsRequestChild.h" +#include "MediaTransportHandler.h" +#include "nsIHttpChannelInternal.h" +#include "RTCDtlsTransport.h" +#include "RTCRtpTransceiver.h" + +namespace test { +#ifdef USE_FAKE_PCOBSERVER +class AFakePCObserver; +#endif +} // namespace test + +class nsDOMDataChannel; +class nsIPrincipal; + +namespace mozilla { +struct CandidateInfo; +class DataChannel; +class DtlsIdentity; +class MediaPipeline; +class MediaPipelineReceive; +class MediaPipelineTransmit; +class SharedWebrtcState; + +namespace dom { +class RTCCertificate; +struct RTCConfiguration; +struct RTCRtpSourceEntry; +struct RTCIceServer; +struct RTCOfferOptions; +struct RTCRtpParameters; +class RTCRtpSender; +class MediaStreamTrack; + +#ifdef USE_FAKE_PCOBSERVER +typedef test::AFakePCObserver PeerConnectionObserver; +typedef const char* PCObserverString; +#else +class PeerConnectionObserver; +typedef NS_ConvertUTF8toUTF16 PCObserverString; +#endif +} // namespace dom +} // namespace mozilla + +#if defined(__cplusplus) && __cplusplus >= 201103L +typedef struct Timecard Timecard; +#else +# include "common/time_profiling/timecard.h" +#endif + +// To preserve blame, convert nsresult to ErrorResult with wrappers. These +// macros help declare wrappers w/function being wrapped when there are no +// differences. + +#define NS_IMETHODIMP_TO_ERRORRESULT(func, rv, ...) \ + NS_IMETHODIMP func(__VA_ARGS__); \ + void func(__VA_ARGS__, rv) + +#define NS_IMETHODIMP_TO_ERRORRESULT_RETREF(resulttype, func, rv, ...) \ + NS_IMETHODIMP func(__VA_ARGS__, resulttype** result); \ + already_AddRefed<resulttype> func(__VA_ARGS__, rv) + +namespace mozilla { + +using mozilla::DtlsIdentity; +using mozilla::ErrorResult; +using mozilla::PeerIdentity; +using mozilla::dom::PeerConnectionObserver; +using mozilla::dom::RTCConfiguration; +using mozilla::dom::RTCIceServer; +using mozilla::dom::RTCOfferOptions; + +class PeerConnectionWrapper; +class RemoteSourceStreamInfo; + +// Uuid Generator +class PCUuidGenerator : public mozilla::JsepUuidGenerator { + public: + virtual bool Generate(std::string* idp) override; + virtual mozilla::JsepUuidGenerator* Clone() const override { + return new PCUuidGenerator(*this); + } + + private: + nsCOMPtr<nsIUUIDGenerator> mGenerator; +}; + +// This is a variation of Telemetry::AutoTimer that keeps a reference +// count and records the elapsed time when the count falls to zero. The +// elapsed time is recorded in seconds. +struct PeerConnectionAutoTimer { + PeerConnectionAutoTimer() + : mRefCnt(0), mStart(TimeStamp::Now()), mUsedAV(false){}; + void RegisterConnection(); + void UnregisterConnection(bool aContainedAV); + bool IsStopped(); + + private: + int64_t mRefCnt; + TimeStamp mStart; + bool mUsedAV; +}; + +// Enter an API call and check that the state is OK, +// the PC isn't closed, etc. +#define PC_AUTO_ENTER_API_CALL(assert_ice_ready) \ + do { \ + /* do/while prevents res from conflicting with locals */ \ + nsresult res = CheckApiState(assert_ice_ready); \ + if (NS_FAILED(res)) return res; \ + } while (0) +#define PC_AUTO_ENTER_API_CALL_VOID_RETURN(assert_ice_ready) \ + do { \ + /* do/while prevents res from conflicting with locals */ \ + nsresult res = CheckApiState(assert_ice_ready); \ + if (NS_FAILED(res)) return; \ + } while (0) +#define PC_AUTO_ENTER_API_CALL_NO_CHECK() CheckThread() + +class PeerConnectionImpl final + : public nsISupports, + public nsWrapperCache, + public mozilla::DataChannelConnection::DataConnectionListener { + struct Internal; // Avoid exposing c includes to bindings + + public: + explicit PeerConnectionImpl( + const mozilla::dom::GlobalObject* aGlobal = nullptr); + + NS_DECL_CYCLE_COLLECTING_ISUPPORTS + NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(PeerConnectionImpl) + + JSObject* WrapObject(JSContext* aCx, + JS::Handle<JSObject*> aGivenProto) override; + nsPIDOMWindowInner* GetParentObject() const; + + static already_AddRefed<PeerConnectionImpl> Constructor( + const mozilla::dom::GlobalObject& aGlobal); + + // DataConnection observers + void NotifyDataChannel(already_AddRefed<mozilla::DataChannel> aChannel) + // PeerConnectionImpl only inherits from mozilla::DataChannelConnection + // inside libxul. + override; + + const RefPtr<MediaTransportHandler> GetTransportHandler() const; + + // Handle system to allow weak references to be passed through C code + virtual const std::string& GetHandle(); + + // Name suitable for exposing to content + virtual const std::string& GetName(); + + // ICE events + void IceConnectionStateChange(dom::RTCIceConnectionState state); + void IceGatheringStateChange(dom::RTCIceGatheringState state); + void OnCandidateFound(const std::string& aTransportId, + const CandidateInfo& aCandidateInfo); + void UpdateDefaultCandidate(const std::string& defaultAddr, + uint16_t defaultPort, + const std::string& defaultRtcpAddr, + uint16_t defaultRtcpPort, + const std::string& transportId); + + static void ListenThread(void* aData); + static void ConnectThread(void* aData); + + // Get the STS thread + nsISerialEventTarget* GetSTSThread() { + PC_AUTO_ENTER_API_CALL_NO_CHECK(); + return mSTSThread; + } + + nsresult Initialize(PeerConnectionObserver& aObserver, + nsGlobalWindowInner* aWindow); + + // Initialize PeerConnection from an RTCConfiguration object (JS entrypoint) + void Initialize(PeerConnectionObserver& aObserver, + nsGlobalWindowInner& aWindow, ErrorResult& rv); + + void SetCertificate(mozilla::dom::RTCCertificate& aCertificate); + const RefPtr<mozilla::dom::RTCCertificate>& Certificate() const; + // This is a hack to support external linkage. + RefPtr<DtlsIdentity> Identity() const; + + NS_IMETHODIMP_TO_ERRORRESULT(CreateOffer, ErrorResult& rv, + const RTCOfferOptions& aOptions) { + rv = CreateOffer(aOptions); + } + + NS_IMETHODIMP CreateAnswer(); + void CreateAnswer(ErrorResult& rv) { rv = CreateAnswer(); } + + NS_IMETHODIMP CreateOffer(const mozilla::JsepOfferOptions& aConstraints); + + NS_IMETHODIMP SetLocalDescription(int32_t aAction, const char* aSDP); + + void SetLocalDescription(int32_t aAction, const nsAString& aSDP, + ErrorResult& rv) { + rv = SetLocalDescription(aAction, NS_ConvertUTF16toUTF8(aSDP).get()); + } + + NS_IMETHODIMP SetRemoteDescription(int32_t aAction, const char* aSDP); + + void SetRemoteDescription(int32_t aAction, const nsAString& aSDP, + ErrorResult& rv) { + rv = SetRemoteDescription(aAction, NS_ConvertUTF16toUTF8(aSDP).get()); + } + + already_AddRefed<dom::Promise> GetStats(dom::MediaStreamTrack* aSelector); + + void GetRemoteStreams(nsTArray<RefPtr<DOMMediaStream>>& aStreamsOut) const; + + NS_IMETHODIMP AddIceCandidate(const char* aCandidate, const char* aMid, + const char* aUfrag, + const dom::Nullable<unsigned short>& aLevel); + + void AddIceCandidate(const nsAString& aCandidate, const nsAString& aMid, + const nsAString& aUfrag, + const dom::Nullable<unsigned short>& aLevel, + ErrorResult& rv) { + rv = AddIceCandidate(NS_ConvertUTF16toUTF8(aCandidate).get(), + NS_ConvertUTF16toUTF8(aMid).get(), + NS_ConvertUTF16toUTF8(aUfrag).get(), aLevel); + } + + void UpdateNetworkState(bool online); + + NS_IMETHODIMP CloseStreams(); + + void CloseStreams(ErrorResult& rv) { rv = CloseStreams(); } + + already_AddRefed<dom::RTCRtpTransceiver> AddTransceiver( + const dom::RTCRtpTransceiverInit& aInit, const nsAString& aKind, + dom::MediaStreamTrack* aSendTrack, ErrorResult& aRv); + + bool CheckNegotiationNeeded(); + bool CreatedSender(const dom::RTCRtpSender& aSender) const; + + // test-only + NS_IMETHODIMP_TO_ERRORRESULT(EnablePacketDump, ErrorResult& rv, + unsigned long level, dom::mozPacketDumpType type, + bool sending) { + rv = EnablePacketDump(level, type, sending); + } + + // test-only + NS_IMETHODIMP_TO_ERRORRESULT(DisablePacketDump, ErrorResult& rv, + unsigned long level, dom::mozPacketDumpType type, + bool sending) { + rv = DisablePacketDump(level, type, sending); + } + + void GetPeerIdentity(nsAString& peerIdentity) { + if (mPeerIdentity) { + peerIdentity = mPeerIdentity->ToString(); + return; + } + + peerIdentity.SetIsVoid(true); + } + + const PeerIdentity* GetPeerIdentity() const { return mPeerIdentity; } + NS_IMETHODIMP_TO_ERRORRESULT(SetPeerIdentity, ErrorResult& rv, + const nsAString& peerIdentity) { + rv = SetPeerIdentity(peerIdentity); + } + + const std::string& GetIdAsAscii() const { return mName; } + + void GetId(nsAString& id) { id = NS_ConvertASCIItoUTF16(mName.c_str()); } + + void SetId(const nsAString& id) { mName = NS_ConvertUTF16toUTF8(id).get(); } + + // this method checks to see if we've made a promise to protect media. + bool PrivacyRequested() const { + return mPrivacyRequested.isSome() && *mPrivacyRequested; + } + + bool PrivacyNeeded() const { + return mPrivacyRequested.isSome() && *mPrivacyRequested; + } + + NS_IMETHODIMP GetFingerprint(char** fingerprint); + void GetFingerprint(nsAString& fingerprint) { + char* tmp; + nsresult rv = GetFingerprint(&tmp); + NS_ENSURE_SUCCESS_VOID(rv); + fingerprint.AssignASCII(tmp); + delete[] tmp; + } + + void GetCurrentLocalDescription(nsAString& aSDP) const; + void GetPendingLocalDescription(nsAString& aSDP) const; + + void GetCurrentRemoteDescription(nsAString& aSDP) const; + void GetPendingRemoteDescription(nsAString& aSDP) const; + + dom::Nullable<bool> GetCurrentOfferer() const; + dom::Nullable<bool> GetPendingOfferer() const; + + NS_IMETHODIMP SignalingState(mozilla::dom::RTCSignalingState* aState); + + mozilla::dom::RTCSignalingState SignalingState() { + mozilla::dom::RTCSignalingState state; + SignalingState(&state); + return state; + } + + NS_IMETHODIMP IceConnectionState(mozilla::dom::RTCIceConnectionState* aState); + + mozilla::dom::RTCIceConnectionState IceConnectionState() { + mozilla::dom::RTCIceConnectionState state; + IceConnectionState(&state); + return state; + } + + NS_IMETHODIMP IceGatheringState(mozilla::dom::RTCIceGatheringState* aState); + + mozilla::dom::RTCIceGatheringState IceGatheringState() { + return mIceGatheringState; + } + + NS_IMETHODIMP Close(); + + void Close(ErrorResult& rv) { rv = Close(); } + + // TODO: Convert this to MOZ_CAN_RUN_SCRIPT (bug 1415230) + MOZ_CAN_RUN_SCRIPT_BOUNDARY bool PluginCrash(uint32_t aPluginID, + const nsAString& aPluginName); + + NS_IMETHODIMP_TO_ERRORRESULT(SetConfiguration, ErrorResult& rv, + const RTCConfiguration& aConfiguration) { + rv = SetConfiguration(aConfiguration); + } + + void RestartIce(); + void RestartIceNoRenegotiationNeeded(); + + void RecordEndOfCallTelemetry(); + + nsresult InitializeDataChannel(); + + NS_IMETHODIMP_TO_ERRORRESULT_RETREF(nsDOMDataChannel, CreateDataChannel, + ErrorResult& rv, const nsAString& aLabel, + const nsAString& aProtocol, + uint16_t aType, bool outOfOrderAllowed, + uint16_t aMaxTime, uint16_t aMaxNum, + bool aExternalNegotiated, + uint16_t aStream); + + // Base class for chained operations. Necessary right now because some + // operations come from JS (in the form of dom::ChainedOperation), and others + // come from c++ (dom::ChainedOperation is very unwieldy and arcane to build + // in c++). Once we stop using JSImpl, we should be able to simplify this. + class Operation : public dom::PromiseNativeHandler { + public: + NS_DECL_CYCLE_COLLECTING_ISUPPORTS + NS_DECL_CYCLE_COLLECTION_CLASS(Operation) + Operation(PeerConnectionImpl* aPc, ErrorResult& aError); + MOZ_CAN_RUN_SCRIPT + void Call(ErrorResult& aError); + dom::Promise* GetPromise() { return mPromise; } + MOZ_CAN_RUN_SCRIPT + void ResolvedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue, + ErrorResult& aRv) override; + + MOZ_CAN_RUN_SCRIPT + void RejectedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue, + ErrorResult& aRv) override; + + protected: + MOZ_CAN_RUN_SCRIPT + virtual RefPtr<dom::Promise> CallImpl(ErrorResult& aError) = 0; + virtual ~Operation(); + // This is the promise p from https://w3c.github.io/webrtc-pc/#dfn-chain + // This will be a content promise, since we return this to the caller of + // Chain. + RefPtr<dom::Promise> mPromise; + RefPtr<PeerConnectionImpl> mPc; + }; + + class JSOperation final : public Operation { + public: + JSOperation(PeerConnectionImpl* aPc, dom::ChainedOperation& aOp, + ErrorResult& aError); + NS_DECL_ISUPPORTS_INHERITED + NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(JSOperation, Operation) + + private: + MOZ_CAN_RUN_SCRIPT + RefPtr<dom::Promise> CallImpl(ErrorResult& aError) override; + ~JSOperation() = default; + RefPtr<dom::ChainedOperation> mOperation; + }; + + MOZ_CAN_RUN_SCRIPT + already_AddRefed<dom::Promise> Chain(dom::ChainedOperation& aOperation, + ErrorResult& aError); + MOZ_CAN_RUN_SCRIPT + already_AddRefed<dom::Promise> Chain(const RefPtr<Operation>& aOperation, + ErrorResult& aError); + already_AddRefed<dom::Promise> MakePromise(ErrorResult& aError) const; + + void UpdateNegotiationNeeded(); + + void GetTransceivers( + nsTArray<RefPtr<dom::RTCRtpTransceiver>>& aTransceiversOut) { + aTransceiversOut = mTransceivers.Clone(); + } + + // Gets the RTC Signaling State of the JSEP session + dom::RTCSignalingState GetSignalingState() const; + + already_AddRefed<dom::Promise> OnSetDescriptionSuccess( + dom::RTCSdpType aSdpType, bool aRemote, ErrorResult& aError); + + void OnSetDescriptionError(); + + bool IsClosed() const; + + // called when DTLS connects; we only need this once + nsresult OnAlpnNegotiated(bool aPrivacyRequested); + + // initialize telemetry for when calls start + void StartCallTelem(); + + // Gets all codec stats for all transports, coalesced to transport level. + nsTArray<dom::RTCCodecStats> GetCodecStats(DOMHighResTimeStamp aNow); + + RefPtr<dom::RTCStatsReportPromise> GetStats(dom::MediaStreamTrack* aSelector, + bool aInternalStats); + + void CollectConduitTelemetryData(); + + void OnMediaError(const std::string& aError); + + void DumpPacket_m(size_t level, dom::mozPacketDumpType type, bool sending, + UniquePtr<uint8_t[]>& packet, size_t size); + + const dom::RTCStatsTimestampMaker& GetTimestampMaker() const { + return mTimestampMaker; + } + + // Utility function, given a string pref and an URI, returns whether or not + // the URI occurs in the pref. Wildcards are supported (e.g. *.example.com) + // and multiple hostnames can be present, separated by commas. + static bool HostnameInPref(const char* aPrefList, nsIURI* aDocURI); + + void StampTimecard(const char* aEvent); + + bool RelayOnly() const { + return mJsConfiguration.mIceTransportPolicy.WasPassed() && + mJsConfiguration.mIceTransportPolicy.Value() == + dom::RTCIceTransportPolicy::Relay; + } + + RefPtr<PacketDumper> GetPacketDumper() { + if (!mPacketDumper) { + mPacketDumper = new PacketDumper(mHandle); + } + + return mPacketDumper; + } + + nsString GenerateUUID() const { + std::string result; + if (!mUuidGen->Generate(&result)) { + MOZ_CRASH(); + } + return NS_ConvertUTF8toUTF16(result.c_str()); + } + + bool ShouldAllowOldSetParameters() const { return mAllowOldSetParameters; } + + void SendWarningToConsole(const nsCString& aWarning); + + const UniquePtr<dom::RTCStatsReportInternal>& GetFinalStats() const { + return mFinalStats; + } + + void DisableLongTermStats() { mDisableLongTermStats = true; } + + bool LongTermStatsIsDisabled() const { return mDisableLongTermStats; } + + private: + virtual ~PeerConnectionImpl(); + PeerConnectionImpl(const PeerConnectionImpl& rhs); + PeerConnectionImpl& operator=(PeerConnectionImpl); + + RefPtr<dom::RTCStatsPromise> GetDataChannelStats( + const RefPtr<DataChannelConnection>& aDataChannelConnection, + const DOMHighResTimeStamp aTimestamp); + nsresult CalculateFingerprint(const std::string& algorithm, + std::vector<uint8_t>* fingerprint) const; + nsresult ConfigureJsepSessionCodecs(); + + NS_IMETHODIMP EnsureDataConnection(uint16_t aLocalPort, uint16_t aNumstreams, + uint32_t aMaxMessageSize, bool aMMSSet); + + nsresult CheckApiState(bool assert_ice_ready) const; + void StoreFinalStats(UniquePtr<dom::RTCStatsReportInternal>&& report); + void CheckThread() const { MOZ_ASSERT(NS_IsMainThread(), "Wrong thread"); } + + // test-only: called from AddRIDExtension and AddRIDFilter + // for simulcast mochitests. + RefPtr<MediaPipeline> GetMediaPipelineForTrack( + dom::MediaStreamTrack& aRecvTrack); + + void CandidateReady(const std::string& candidate, + const std::string& transportId, const std::string& ufrag); + void SendLocalIceCandidateToContent(uint16_t level, const std::string& mid, + const std::string& candidate, + const std::string& ufrag); + + nsresult GetDatachannelParameters(uint32_t* channels, uint16_t* localport, + uint16_t* remoteport, + uint32_t* maxmessagesize, bool* mmsset, + std::string* transportId, + bool* client) const; + + nsresult AddRtpTransceiverToJsepSession(RefPtr<JsepTransceiver>& transceiver); + + void RecordIceRestartStatistics(JsepSdpType type); + + void StoreConfigurationForAboutWebrtc(const RTCConfiguration& aConfig); + + dom::Sequence<dom::RTCSdpParsingErrorInternal> GetLastSdpParsingErrors() + const; + + MOZ_CAN_RUN_SCRIPT + void RunNextOperation(ErrorResult& aError); + + void SyncToJsep(); + void SyncFromJsep(); + + void DoSetDescriptionSuccessPostProcessing(dom::RTCSdpType aSdpType, + bool aRemote, + const RefPtr<dom::Promise>& aP); + + // Timecard used to measure processing time. This should be the first class + // attribute so that we accurately measure the time required to instantiate + // any other attributes of this class. + Timecard* mTimeCard; + + // Configuration used to initialize the PeerConnection + dom::RTCConfigurationInternal mJsConfiguration; + + mozilla::dom::RTCSignalingState mSignalingState; + + // ICE State + mozilla::dom::RTCIceConnectionState mIceConnectionState; + mozilla::dom::RTCIceGatheringState mIceGatheringState; + + RefPtr<PeerConnectionObserver> mPCObserver; + + nsCOMPtr<nsPIDOMWindowInner> mWindow; + + // The SDP sent in from JS + std::string mLocalRequestedSDP; + std::string mRemoteRequestedSDP; + // Only accessed from main + mozilla::dom::Sequence<mozilla::dom::RTCSdpHistoryEntryInternal> mSdpHistory; + std::string mPendingLocalDescription; + std::string mPendingRemoteDescription; + std::string mCurrentLocalDescription; + std::string mCurrentRemoteDescription; + Maybe<bool> mPendingOfferer; + Maybe<bool> mCurrentOfferer; + + // DTLS fingerprint + std::string mFingerprint; + std::string mRemoteFingerprint; + + // identity-related fields + // The entity on the other end of the peer-to-peer connection; + // void if they are not yet identified, and no identity setting has been set + RefPtr<PeerIdentity> mPeerIdentity; + // The certificate we are using. + RefPtr<mozilla::dom::RTCCertificate> mCertificate; + // Whether an app should be prevented from accessing media produced by the PC + // If this is true, then media will not be sent until mPeerIdentity matches + // local streams PeerIdentity; and remote streams are protected from content + // + // This can be false if mPeerIdentity is set, in the case where identity is + // provided, but the media is not protected from the app on either side + Maybe<bool> mPrivacyRequested; + + // A handle to refer to this PC with + std::string mHandle; + + // A name for this PC that we are willing to expose to content. + std::string mName; + + // The target to run stuff on + nsCOMPtr<nsISerialEventTarget> mSTSThread; + + // DataConnection that's used to get all the DataChannels + RefPtr<mozilla::DataChannelConnection> mDataConnection; + + bool mForceIceTcp; + RefPtr<MediaTransportHandler> mTransportHandler; + + // The JSEP negotiation session. + mozilla::UniquePtr<PCUuidGenerator> mUuidGen; + mozilla::UniquePtr<mozilla::JsepSession> mJsepSession; + // There are lots of error cases where we want to abandon an sRD/sLD _after_ + // it has already been applied to the JSEP engine, and revert back to the + // previous state. We also want to ensure that the various modifications + // to the JSEP engine are not exposed to JS until the sRD/sLD completes, + // which is why we have a new "uncommitted" JSEP engine. + mozilla::UniquePtr<mozilla::JsepSession> mUncommittedJsepSession; + unsigned long mIceRestartCount; + unsigned long mIceRollbackCount; + + // The following are used for Telemetry: + bool mCallTelemStarted = false; + bool mCallTelemEnded = false; + + // We _could_ make mFinalStatsQuery be an RTCStatsReportPromise, but that + // would require RTCStatsReportPromise to no longer be exclusive, which is + // a bit of a hassle, and not very performant. + RefPtr<GenericNonExclusivePromise> mFinalStatsQuery; + UniquePtr<dom::RTCStatsReportInternal> mFinalStats; + bool mDisableLongTermStats = false; + + // Start time of ICE. + mozilla::TimeStamp mIceStartTime; + // Hold PeerConnectionAutoTimer instances for each window. + static std::map<uint64_t, PeerConnectionAutoTimer> sCallDurationTimers; + + bool mHaveConfiguredCodecs; + + bool mTrickle; + + bool mPrivateWindow; + + // Whether this PeerConnection is being counted as active by mWindow + bool mActiveOnWindow; + + // storage for Telemetry data + uint16_t mMaxReceiving[SdpMediaSection::kMediaTypes]; + uint16_t mMaxSending[SdpMediaSection::kMediaTypes]; + + // used to store the raw trickle candidate string for display + // on the about:webrtc raw candidates table. + std::vector<std::string> mRawTrickledCandidates; + + dom::RTCStatsTimestampMaker mTimestampMaker; + + RefPtr<RTCStatsIdGenerator> mIdGenerator; + // Ordinarily, I would use a std::map here, but this used to be a JS Map + // which iterates in insertion order, and I want to avoid changing this. + nsTArray<RefPtr<DOMMediaStream>> mReceiveStreams; + + DOMMediaStream* GetReceiveStream(const std::string& aId) const; + DOMMediaStream* CreateReceiveStream(const std::string& aId); + + void InitLocalAddrs(); // for stun local address IPC request + bool ShouldForceProxy() const; + std::unique_ptr<NrSocketProxyConfig> GetProxyConfig() const; + + class StunAddrsHandler : public net::StunAddrsListener { + public: + explicit StunAddrsHandler(PeerConnectionImpl* aPc) + : mPcHandle(aPc->GetHandle()) {} + + void OnMDNSQueryComplete(const nsCString& hostname, + const Maybe<nsCString>& address) override; + + void OnStunAddrsAvailable( + const mozilla::net::NrIceStunAddrArray& addrs) override; + + private: + // This class is not cycle-collected, so we must avoid grabbing a strong + // reference. + const std::string mPcHandle; + virtual ~StunAddrsHandler() {} + }; + + // Manage ICE transports. + void UpdateTransport(const JsepTransceiver& aTransceiver, bool aForceIceTcp); + + void GatherIfReady(); + void FlushIceCtxOperationQueueIfReady(); + void PerformOrEnqueueIceCtxOperation(nsIRunnable* runnable); + nsresult SetTargetForDefaultLocalAddressLookup(); + void EnsureIceGathering(bool aDefaultRouteOnly, bool aObfuscateHostAddresses); + + bool GetPrefDefaultAddressOnly() const; + bool GetPrefObfuscateHostAddresses() const; + + bool IsIceCtxReady() const { + return mLocalAddrsRequestState == STUN_ADDR_REQUEST_COMPLETE; + } + + // Ensure ICE transports exist that we might need when offer/answer concludes + void EnsureTransports(const JsepSession& aSession); + + void UpdateRTCDtlsTransports(bool aMarkAsStable); + void RollbackRTCDtlsTransports(); + void RemoveRTCDtlsTransportsExcept( + const std::set<std::string>& aTransportIds); + + // Activate ICE transports at the conclusion of offer/answer, + // or when rollback occurs. + nsresult UpdateTransports(const JsepSession& aSession, + const bool forceIceTcp); + + void ResetStunAddrsForIceRestart() { mStunAddrs.Clear(); } + + // Start ICE checks. + void StartIceChecks(const JsepSession& session); + + // Process a trickle ICE candidate. + void AddIceCandidate(const std::string& candidate, + const std::string& aTransportId, + const std::string& aUFrag); + + // Handle complete media pipelines. + // This updates codec parameters, starts/stops send/receive, and other + // stuff that doesn't necessarily require negotiation. This can be called at + // any time, not just when an offer/answer exchange completes. + nsresult UpdateMediaPipelines(); + + already_AddRefed<dom::RTCRtpTransceiver> CreateTransceiver( + const std::string& aId, bool aIsVideo, + const dom::RTCRtpTransceiverInit& aInit, + dom::MediaStreamTrack* aSendTrack, ErrorResult& aRv); + + std::string GetTransportIdMatchingSendTrack( + const dom::MediaStreamTrack& aTrack) const; + + // this determines if any track is peerIdentity constrained + bool AnyLocalTrackHasPeerIdentity() const; + + bool AnyCodecHasPluginID(uint64_t aPluginID); + + already_AddRefed<nsIHttpChannelInternal> GetChannel() const; + + void BreakCycles(); + + bool HasPendingSetParameters() const; + void InvalidateLastReturnedParameters(); + + RefPtr<WebrtcCallWrapper> mCall; + + // See Bug 1642419, this can be removed when all sites are working with RTX. + bool mRtxIsAllowed = true; + + nsTArray<RefPtr<Operation>> mOperations; + bool mChainingOperation = false; + bool mUpdateNegotiationNeededFlagOnEmptyChain = false; + bool mNegotiationNeeded = false; + std::set<std::pair<std::string, std::string>> mLocalIceCredentialsToReplace; + + nsTArray<RefPtr<dom::RTCRtpTransceiver>> mTransceivers; + std::map<std::string, RefPtr<dom::RTCDtlsTransport>> + mTransportIdToRTCDtlsTransport; + + // Used whenever we need to dispatch a runnable to STS to tweak something + // on our ICE ctx, but are not ready to do so at the moment (eg; we are + // waiting to get a callback with our http proxy config before we start + // gathering or start checking) + std::vector<nsCOMPtr<nsIRunnable>> mQueuedIceCtxOperations; + + // Set if prefs dictate that we should force the use of a web proxy. + bool mForceProxy = false; + + // Used to cancel incoming stun addrs response + RefPtr<net::StunAddrsRequestChild> mStunAddrsRequest; + + enum StunAddrRequestState { + STUN_ADDR_REQUEST_NONE, + STUN_ADDR_REQUEST_PENDING, + STUN_ADDR_REQUEST_COMPLETE + }; + // Used to track the state of the stun addr IPC request + StunAddrRequestState mLocalAddrsRequestState = STUN_ADDR_REQUEST_NONE; + + // Used to store the result of the stun addr IPC request + nsTArray<NrIceStunAddr> mStunAddrs; + + // Used to ensure the target for default local address lookup is only set + // once. + bool mTargetForDefaultLocalAddressLookupIsSet = false; + + // Keep track of local hostnames to register. Registration is deferred + // until StartIceChecks has run. Accessed on main thread only. + std::map<std::string, std::string> mMDNSHostnamesToRegister; + bool mCanRegisterMDNSHostnamesDirectly = false; + + // Used to store the mDNS hostnames that we have registered + std::set<std::string> mRegisteredMDNSHostnames; + + // web-compat stopgap + bool mAllowOldSetParameters = false; + + // Used to store the mDNS hostnames that we have queried + struct PendingIceCandidate { + std::vector<std::string> mTokenizedCandidate; + std::string mTransportId; + std::string mUfrag; + }; + std::map<std::string, std::list<PendingIceCandidate>> mQueriedMDNSHostnames; + + // Connecting PCImpl to sigslot is not safe, because sigslot takes strong + // references without any reference counting, and JS holds refcounted strong + // references to PCImpl (meaning JS can cause PCImpl to be destroyed). This + // is not ref-counted (since sigslot holds onto non-refcounted strong refs) + // Must be destroyed on STS. Holds a weak reference to PCImpl. + class SignalHandler : public sigslot::has_slots<> { + public: + SignalHandler(PeerConnectionImpl* aPc, MediaTransportHandler* aSource); + virtual ~SignalHandler(); + + void ConnectSignals(); + + // ICE events + void IceGatheringStateChange_s(dom::RTCIceGatheringState aState); + void IceConnectionStateChange_s(dom::RTCIceConnectionState aState); + void OnCandidateFound_s(const std::string& aTransportId, + const CandidateInfo& aCandidateInfo); + void AlpnNegotiated_s(const std::string& aAlpn, bool aPrivacyRequested); + + private: + const std::string mHandle; + RefPtr<MediaTransportHandler> mSource; + RefPtr<nsISerialEventTarget> mSTSThread; + }; + + mozilla::UniquePtr<SignalHandler> mSignalHandler; + + // Make absolutely sure our refcount does not go to 0 before Close() is called + // This is because Close does a stats query, which needs the + // PeerConnectionImpl to stick around until the query is done. + RefPtr<PeerConnectionImpl> mKungFuDeathGrip; + RefPtr<PacketDumper> mPacketDumper; + + public: + // these are temporary until the DataChannel Listen/Connect API is removed + unsigned short listenPort; + unsigned short connectPort; + char* connectStr; // XXX ownership/free +}; + +// This is what is returned when you acquire on a handle +class PeerConnectionWrapper { + public: + explicit PeerConnectionWrapper(const std::string& handle); + + PeerConnectionImpl* impl() { return impl_; } + + private: + RefPtr<PeerConnectionImpl> impl_; +}; + +} // namespace mozilla + +#undef NS_IMETHODIMP_TO_ERRORRESULT +#undef NS_IMETHODIMP_TO_ERRORRESULT_RETREF +#endif // _PEER_CONNECTION_IMPL_H_ |