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/* 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 _JSEPSESSIONIMPL_H_
#define _JSEPSESSIONIMPL_H_
#include <map>
#include <set>
#include <string>
#include <vector>
#include "jsep/JsepCodecDescription.h"
#include "jsep/JsepSession.h"
#include "jsep/JsepTrack.h"
#include "jsep/JsepTransceiver.h"
#include "jsep/SsrcGenerator.h"
#include "sdp/HybridSdpParser.h"
#include "sdp/SdpHelper.h"
namespace mozilla {
// JsepSessionImpl members that have default copy c'tors, to simplify the
// implementation of the copy c'tor for JsepSessionImpl
class JsepSessionCopyableStuff {
protected:
struct JsepDtlsFingerprint {
std::string mAlgorithm;
std::vector<uint8_t> mValue;
};
Maybe<bool> mIsPendingOfferer;
Maybe<bool> mIsCurrentOfferer;
bool mIceControlling = false;
std::string mIceUfrag;
std::string mIcePwd;
std::string mOldIceUfrag;
std::string mOldIcePwd;
bool mRemoteIsIceLite = false;
std::vector<std::string> mIceOptions;
JsepBundlePolicy mBundlePolicy = kBundleBalanced;
std::vector<JsepDtlsFingerprint> mDtlsFingerprints;
uint64_t mSessionId = 0;
uint64_t mSessionVersion = 0;
size_t mMidCounter = 0;
std::set<std::string> mUsedMids;
size_t mTransportIdCounter = 0;
std::vector<JsepExtmapMediaType> mRtpExtensions;
std::set<uint16_t> mExtmapEntriesEverUsed;
std::map<uint16_t, std::string> mExtmapEntriesEverNegotiated;
std::string mDefaultRemoteStreamId;
std::string mCNAME;
// Used to prevent duplicate local SSRCs. Not used to prevent local/remote or
// remote-only duplication, which will be important for EKT but not now.
std::set<uint32_t> mSsrcs;
std::string mLastError;
std::vector<std::pair<size_t, std::string>> mLastSdpParsingErrors;
bool mEncodeTrackId = true;
SsrcGenerator mSsrcGenerator;
// !!!NOT INDEXED BY LEVEL!!! The level mapping is done with
// JsepTransceiver::mLevel. The keys are UUIDs.
std::vector<JsepTransceiver> mTransceivers;
// So we can rollback. Not as simple as just going back to the old, though...
std::vector<JsepTransceiver> mOldTransceivers;
};
class JsepSessionImpl : public JsepSession, public JsepSessionCopyableStuff {
public:
JsepSessionImpl(const std::string& name, UniquePtr<JsepUuidGenerator> uuidgen)
: JsepSession(name),
mUuidGen(std::move(uuidgen)),
mSdpHelper(&mLastError),
mParser(new HybridSdpParser()) {}
JsepSessionImpl(const JsepSessionImpl& aOrig);
JsepSession* Clone() const override { return new JsepSessionImpl(*this); }
// Implement JsepSession methods.
virtual nsresult Init() override;
nsresult SetBundlePolicy(JsepBundlePolicy policy) override;
virtual bool RemoteIsIceLite() const override { return mRemoteIsIceLite; }
virtual std::vector<std::string> GetIceOptions() const override {
return mIceOptions;
}
virtual nsresult AddDtlsFingerprint(
const std::string& algorithm, const std::vector<uint8_t>& value) override;
virtual nsresult AddRtpExtension(
JsepMediaType mediaType, const std::string& extensionName,
SdpDirectionAttribute::Direction direction) override;
virtual nsresult AddAudioRtpExtension(
const std::string& extensionName,
SdpDirectionAttribute::Direction direction =
SdpDirectionAttribute::Direction::kSendrecv) override;
virtual nsresult AddVideoRtpExtension(
const std::string& extensionName,
SdpDirectionAttribute::Direction direction =
SdpDirectionAttribute::Direction::kSendrecv) override;
virtual nsresult AddAudioVideoRtpExtension(
const std::string& extensionName,
SdpDirectionAttribute::Direction direction =
SdpDirectionAttribute::Direction::kSendrecv) override;
virtual std::vector<UniquePtr<JsepCodecDescription>>& Codecs() override {
return mSupportedCodecs;
}
virtual Result CreateOffer(const JsepOfferOptions& options,
std::string* offer) override;
virtual Result CreateAnswer(const JsepAnswerOptions& options,
std::string* answer) override;
virtual std::string GetLocalDescription(
JsepDescriptionPendingOrCurrent type) const override;
virtual std::string GetRemoteDescription(
JsepDescriptionPendingOrCurrent type) const override;
virtual Result SetLocalDescription(JsepSdpType type,
const std::string& sdp) override;
virtual Result SetRemoteDescription(JsepSdpType type,
const std::string& sdp) override;
virtual Result AddRemoteIceCandidate(const std::string& candidate,
const std::string& mid,
const Maybe<uint16_t>& level,
const std::string& ufrag,
std::string* transportId) override;
virtual nsresult AddLocalIceCandidate(const std::string& candidate,
const std::string& transportId,
const std::string& ufrag,
uint16_t* level, std::string* mid,
bool* skipped) override;
virtual nsresult UpdateDefaultCandidate(
const std::string& defaultCandidateAddr, uint16_t defaultCandidatePort,
const std::string& defaultRtcpCandidateAddr,
uint16_t defaultRtcpCandidatePort,
const std::string& transportId) override;
virtual nsresult Close() override;
virtual const std::string GetLastError() const override;
virtual const std::vector<std::pair<size_t, std::string>>&
GetLastSdpParsingErrors() const override;
virtual bool IsIceControlling() const override { return mIceControlling; }
virtual Maybe<bool> IsPendingOfferer() const override {
return mIsPendingOfferer;
}
virtual Maybe<bool> IsCurrentOfferer() const override {
return mIsCurrentOfferer;
}
virtual bool IsIceRestarting() const override {
return !mOldIceUfrag.empty();
}
virtual std::set<std::pair<std::string, std::string>> GetLocalIceCredentials()
const override;
virtual void AddTransceiver(const JsepTransceiver& transceiver) override;
virtual bool CheckNegotiationNeeded() const override;
virtual void SetDefaultCodecs(
const std::vector<UniquePtr<JsepCodecDescription>>& aPreferredCodecs)
override;
private:
friend class JsepSessionTest;
virtual const std::vector<JsepTransceiver>& GetTransceivers() const override {
return mTransceivers;
}
virtual std::vector<JsepTransceiver>& GetTransceivers() override {
return mTransceivers;
}
// Non-const so it can set mLastError
nsresult CreateGenericSDP(UniquePtr<Sdp>* sdp);
void AddExtmap(SdpMediaSection* msection);
std::vector<SdpExtmapAttributeList::Extmap> GetRtpExtensions(
const SdpMediaSection& msection);
std::string GetNewMid();
void AddCommonExtmaps(const SdpMediaSection& remoteMsection,
SdpMediaSection* msection);
uint16_t GetNeverUsedExtmapEntry();
nsresult SetupIds();
void SetState(JsepSignalingState state);
// Non-const so it can set mLastError
nsresult ParseSdp(const std::string& sdp, UniquePtr<Sdp>* parsedp);
nsresult SetLocalDescriptionOffer(UniquePtr<Sdp> offer);
nsresult SetLocalDescriptionAnswer(JsepSdpType type, UniquePtr<Sdp> answer);
nsresult SetRemoteDescriptionOffer(UniquePtr<Sdp> offer);
nsresult SetRemoteDescriptionAnswer(JsepSdpType type, UniquePtr<Sdp> answer);
nsresult ValidateLocalDescription(const Sdp& description, JsepSdpType type);
nsresult ValidateRemoteDescription(const Sdp& description);
nsresult ValidateOffer(const Sdp& offer);
nsresult ValidateAnswer(const Sdp& offer, const Sdp& answer);
nsresult UpdateTransceiversFromRemoteDescription(const Sdp& remote);
Maybe<JsepTransceiver> GetTransceiverForLevel(size_t level) const;
Maybe<JsepTransceiver> GetTransceiverForMid(const std::string& mid) const;
Maybe<JsepTransceiver> GetTransceiverForLocal(size_t level);
Maybe<JsepTransceiver> GetTransceiverForRemote(
const SdpMediaSection& msection);
Maybe<JsepTransceiver> GetTransceiverWithTransport(
const std::string& transportId) const;
// The w3c and IETF specs have a lot of "magical" behavior that happens when
// addTrack is used. This was a deliberate design choice. Sadface.
Maybe<JsepTransceiver> FindUnassociatedTransceiver(
SdpMediaSection::MediaType type, bool magic);
// Called for rollback of local description
void RollbackLocalOffer();
// Called for rollback of remote description
void RollbackRemoteOffer();
nsresult HandleNegotiatedSession(const UniquePtr<Sdp>& local,
const UniquePtr<Sdp>& remote);
nsresult AddTransportAttributes(SdpMediaSection* msection,
SdpSetupAttribute::Role dtlsRole);
nsresult CopyPreviousTransportParams(const Sdp& oldAnswer,
const Sdp& offerersPreviousSdp,
const Sdp& newOffer, Sdp* newLocal);
void EnsureMsid(Sdp* remote);
void SetupBundle(Sdp* sdp) const;
nsresult CreateOfferMsection(const JsepOfferOptions& options,
JsepTransceiver& transceiver, Sdp* local);
nsresult CreateAnswerMsection(const JsepAnswerOptions& options,
JsepTransceiver& transceiver,
const SdpMediaSection& remoteMsection,
Sdp* sdp);
nsresult DetermineAnswererSetupRole(const SdpMediaSection& remoteMsection,
SdpSetupAttribute::Role* rolep);
nsresult MakeNegotiatedTransceiver(const SdpMediaSection& remote,
const SdpMediaSection& local,
JsepTransceiver& transceiverOut);
void EnsureHasOwnTransport(const SdpMediaSection& msection,
JsepTransceiver& transceiver);
void CopyBundleTransports();
nsresult FinalizeTransport(const SdpAttributeList& remote,
const SdpAttributeList& answer,
JsepTransport* transport) const;
nsresult GetNegotiatedBundledMids(SdpHelper::BundledMids* bundledMids);
nsresult EnableOfferMsection(SdpMediaSection* msection);
mozilla::Sdp* GetParsedLocalDescription(
JsepDescriptionPendingOrCurrent type) const;
mozilla::Sdp* GetParsedRemoteDescription(
JsepDescriptionPendingOrCurrent type) const;
const Sdp* GetAnswer() const;
void SetIceRestarting(bool restarting);
void InitTransceiver(JsepTransceiver& aTransceiver);
UniquePtr<JsepUuidGenerator> mUuidGen;
UniquePtr<Sdp> mGeneratedOffer; // Created but not set.
UniquePtr<Sdp> mGeneratedAnswer; // Created but not set.
UniquePtr<Sdp> mCurrentLocalDescription;
UniquePtr<Sdp> mCurrentRemoteDescription;
UniquePtr<Sdp> mPendingLocalDescription;
UniquePtr<Sdp> mPendingRemoteDescription;
std::vector<UniquePtr<JsepCodecDescription>> mSupportedCodecs;
SdpHelper mSdpHelper;
UniquePtr<SdpParser> mParser;
};
} // namespace mozilla
#endif
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