summaryrefslogtreecommitdiffstats
path: root/media/webrtc/signaling/src/peerconnection/PeerConnectionImpl.h
blob: 1dcc70519aa970d0a6d93c69ad9f3ebb4ec8e48b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
/* 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 <deque>
#include <string>
#include <vector>
#include <map>
#include <cmath>

#include "prlock.h"
#include "mozilla/RefPtr.h"
#include "nsWeakPtr.h"
#include "nsAutoPtr.h"
#include "nsIWeakReferenceUtils.h" // for the definition of nsWeakPtr
#include "IPeerConnection.h"
#include "sigslot.h"
#include "nricectx.h"
#include "nricemediastream.h"
#include "nsComponentManagerUtils.h"
#include "nsPIDOMWindow.h"
#include "nsIUUIDGenerator.h"
#include "nsIThread.h"

#include "signaling/src/jsep/JsepSession.h"
#include "signaling/src/jsep/JsepSessionImpl.h"
#include "signaling/src/sdp/SdpMediaSection.h"

#include "mozilla/ErrorResult.h"
#include "mozilla/dom/PeerConnectionImplEnumsBinding.h"
#include "PrincipalChangeObserver.h"
#include "StreamTracks.h"

#if !defined(MOZILLA_EXTERNAL_LINKAGE)
#include "mozilla/TimeStamp.h"
#include "mozilla/net/DataChannel.h"
#include "VideoUtils.h"
#include "VideoSegment.h"
#include "mozilla/dom/RTCStatsReportBinding.h"
#include "nsIPrincipal.h"
#include "mozilla/PeerIdentity.h"
#endif

namespace test {
#ifdef USE_FAKE_PCOBSERVER
class AFakePCObserver;
#endif
}

#ifdef USE_FAKE_MEDIA_STREAMS
class Fake_DOMMediaStream;
class Fake_MediaStreamTrack;
#endif

class nsGlobalWindow;
class nsDOMDataChannel;

namespace mozilla {
class DataChannel;
class DtlsIdentity;
class NrIceCtx;
class NrIceMediaStream;
class NrIceStunServer;
class NrIceTurnServer;
class MediaPipeline;

#ifdef USE_FAKE_MEDIA_STREAMS
typedef Fake_DOMMediaStream DOMMediaStream;
#else
class DOMMediaStream;
#endif

namespace dom {
class RTCCertificate;
struct RTCConfiguration;
class RTCDTMFSender;
struct RTCIceServer;
struct RTCOfferOptions;
struct RTCRtpParameters;
class RTCRtpSender;
#ifdef USE_FAKE_MEDIA_STREAMS
typedef Fake_MediaStreamTrack MediaStreamTrack;
#else
class MediaStreamTrack;
#endif

#ifdef USE_FAKE_PCOBSERVER
typedef test::AFakePCObserver PeerConnectionObserver;
typedef const char *PCObserverString;
#else
class PeerConnectionObserver;
typedef NS_ConvertUTF8toUTF16 PCObserverString;
#endif
}
}

#if defined(__cplusplus) && __cplusplus >= 201103L
typedef struct Timecard Timecard;
#else
#include "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)

struct MediaStreamTable;

namespace mozilla {

using mozilla::dom::PeerConnectionObserver;
using mozilla::dom::RTCConfiguration;
using mozilla::dom::RTCIceServer;
using mozilla::dom::RTCOfferOptions;
using mozilla::DOMMediaStream;
using mozilla::NrIceCtx;
using mozilla::NrIceMediaStream;
using mozilla::DtlsIdentity;
using mozilla::ErrorResult;
using mozilla::NrIceStunServer;
using mozilla::NrIceTurnServer;
#if !defined(MOZILLA_EXTERNAL_LINKAGE)
using mozilla::PeerIdentity;
#endif

class PeerConnectionWrapper;
class PeerConnectionMedia;
class RemoteSourceStreamInfo;

// Uuid Generator
class PCUuidGenerator : public mozilla::JsepUuidGenerator {
 public:
  virtual bool Generate(std::string* idp) override;

 private:
  nsCOMPtr<nsIUUIDGenerator> mGenerator;
};

class PeerConnectionConfiguration
{
public:
  PeerConnectionConfiguration()
  : mBundlePolicy(kBundleBalanced),
    mIceTransportPolicy(NrIceCtx::ICE_POLICY_ALL) {}

  bool addStunServer(const std::string& addr, uint16_t port,
                     const char* transport)
  {
    UniquePtr<NrIceStunServer> server(NrIceStunServer::Create(addr, port, transport));
    if (!server) {
      return false;
    }
    addStunServer(*server);
    return true;
  }
  bool addTurnServer(const std::string& addr, uint16_t port,
                     const std::string& username,
                     const std::string& pwd,
                     const char* transport)
  {
    // TODO(ekr@rtfm.com): Need support for SASLprep for
    // username and password. Bug # ???
    std::vector<unsigned char> password(pwd.begin(), pwd.end());

    UniquePtr<NrIceTurnServer> server(NrIceTurnServer::Create(addr, port, username, password,
							      transport));
    if (!server) {
      return false;
    }
    addTurnServer(*server);
    return true;
  }
  void addStunServer(const NrIceStunServer& server) { mStunServers.push_back (server); }
  void addTurnServer(const NrIceTurnServer& server) { mTurnServers.push_back (server); }
  const std::vector<NrIceStunServer>& getStunServers() const { return mStunServers; }
  const std::vector<NrIceTurnServer>& getTurnServers() const { return mTurnServers; }
  void setBundlePolicy(JsepBundlePolicy policy) { mBundlePolicy = policy;}
  JsepBundlePolicy getBundlePolicy() const { return mBundlePolicy; }
  void setIceTransportPolicy(NrIceCtx::Policy policy) { mIceTransportPolicy = policy;}
  NrIceCtx::Policy getIceTransportPolicy() const { return mIceTransportPolicy; }

#ifndef MOZILLA_EXTERNAL_LINKAGE
  nsresult Init(const RTCConfiguration& aSrc);
  nsresult AddIceServer(const RTCIceServer& aServer);
#endif

private:
  std::vector<NrIceStunServer> mStunServers;
  std::vector<NrIceTurnServer> mTurnServers;
  JsepBundlePolicy mBundlePolicy;
  NrIceCtx::Policy mIceTransportPolicy;
};

#if !defined(MOZILLA_EXTERNAL_LINKAGE)
// Not an inner class so we can forward declare.
class RTCStatsQuery {
  public:
    explicit RTCStatsQuery(bool internalStats);
    ~RTCStatsQuery();

    nsAutoPtr<mozilla::dom::RTCStatsReportInternal> report;
    std::string error;
    // A timestamp to help with telemetry.
    mozilla::TimeStamp iceStartTime;
    // Just for convenience, maybe integrate into the report later
    bool failed;

  private:
    friend class PeerConnectionImpl;
    std::string pcName;
    bool internalStats;
    nsTArray<RefPtr<mozilla::MediaPipeline>> pipelines;
    RefPtr<NrIceCtx> iceCtx;
    bool grabAllLevels;
    DOMHighResTimeStamp now;
};
#endif // MOZILLA_INTERNAL_API

// 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,
#if !defined(MOZILLA_EXTERNAL_LINKAGE)
                                 public mozilla::DataChannelConnection::DataConnectionListener,
                                 public dom::PrincipalChangeObserver<dom::MediaStreamTrack>,
#endif
                                 public sigslot::has_slots<>
{
  struct Internal; // Avoid exposing c includes to bindings

public:
  explicit PeerConnectionImpl(const mozilla::dom::GlobalObject* aGlobal = nullptr);

  enum Error {
    kNoError                          = 0,
    kInvalidCandidate                 = 2,
    kInvalidMediastreamTrack          = 3,
    kInvalidState                     = 4,
    kInvalidSessionDescription        = 5,
    kIncompatibleSessionDescription   = 6,
    kIncompatibleMediaStreamTrack     = 8,
    kInternalError                    = 9
  };

  NS_DECL_THREADSAFE_ISUPPORTS

#if !defined(MOZILLA_EXTERNAL_LINKAGE)
  bool WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto, JS::MutableHandle<JSObject*> aReflector);
#endif

  static already_AddRefed<PeerConnectionImpl>
      Constructor(const mozilla::dom::GlobalObject& aGlobal, ErrorResult& rv);
  static PeerConnectionImpl* CreatePeerConnection();
  already_AddRefed<DOMMediaStream> MakeMediaStream();

  nsresult CreateRemoteSourceStreamInfo(RefPtr<RemoteSourceStreamInfo>* aInfo,
                                        const std::string& aId);

  // DataConnection observers
  void NotifyDataChannel(already_AddRefed<mozilla::DataChannel> aChannel)
#if !defined(MOZILLA_EXTERNAL_LINKAGE)
    // PeerConnectionImpl only inherits from mozilla::DataChannelConnection
    // inside libxul.
    override
#endif
    ;

  // Get the media object
  const RefPtr<PeerConnectionMedia>& media() const {
    PC_AUTO_ENTER_API_CALL_NO_CHECK();
    return mMedia;
  }

  // Configure the ability to use localhost.
  void SetAllowIceLoopback(bool val) { mAllowIceLoopback = val; }
  bool GetAllowIceLoopback() const { return mAllowIceLoopback; }

  // Configure the ability to use IPV6 link-local addresses.
  void SetAllowIceLinkLocal(bool val) { mAllowIceLinkLocal = val; }
  bool GetAllowIceLinkLocal() const { return mAllowIceLinkLocal; }

  // 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(NrIceCtx* ctx,
                                NrIceCtx::ConnectionState state);
  void IceGatheringStateChange(NrIceCtx* ctx,
                               NrIceCtx::GatheringState state);
  void UpdateDefaultCandidate(const std::string& defaultAddr,
                              uint16_t defaultPort,
                              const std::string& defaultRtcpAddr,
                              uint16_t defaultRtcpPort,
                              uint16_t level);
  void EndOfLocalCandidates(uint16_t level);
  void IceStreamReady(NrIceMediaStream *aStream);

  static void ListenThread(void *aData);
  static void ConnectThread(void *aData);

  // Get the main thread
  nsCOMPtr<nsIThread> GetMainThread() {
    PC_AUTO_ENTER_API_CALL_NO_CHECK();
    return mThread;
  }

  // Get the STS thread
  nsIEventTarget* GetSTSThread() {
    PC_AUTO_ENTER_API_CALL_NO_CHECK();
    return mSTSThread;
  }

  nsPIDOMWindowInner* GetWindow() const {
    PC_AUTO_ENTER_API_CALL_NO_CHECK();
    return mWindow;
  }

  // Initialize PeerConnection from a PeerConnectionConfiguration object
  // (used directly by unit-tests, and indirectly by the JS entry point)
  // This is necessary because RTCConfiguration can't be used by unit-tests
  nsresult Initialize(PeerConnectionObserver& aObserver,
                      nsGlobalWindow* aWindow,
                      const PeerConnectionConfiguration& aConfiguration,
                      nsISupports* aThread);

#ifndef MOZILLA_EXTERNAL_LINKAGE
  // Initialize PeerConnection from an RTCConfiguration object (JS entrypoint)
  void Initialize(PeerConnectionObserver& aObserver,
                  nsGlobalWindow& aWindow,
                  const RTCConfiguration& aConfiguration,
                  nsISupports* aThread,
                  ErrorResult &rv);
#endif

#if !defined(MOZILLA_EXTERNAL_LINKAGE)
  void SetCertificate(mozilla::dom::RTCCertificate& aCertificate);
  const RefPtr<mozilla::dom::RTCCertificate>& Certificate() const;
#endif
  // 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());
  }

  nsresult CreateNewRemoteTracks(RefPtr<PeerConnectionObserver>& aPco);

  void RemoveOldRemoteTracks(RefPtr<PeerConnectionObserver>& aPco);

  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());
  }

  NS_IMETHODIMP_TO_ERRORRESULT(GetStats, ErrorResult &rv,
                               mozilla::dom::MediaStreamTrack *aSelector)
  {
    rv = GetStats(aSelector);
  }

  NS_IMETHODIMP AddIceCandidate(const char* aCandidate, const char* aMid,
                                unsigned short aLevel);

  void AddIceCandidate(const nsAString& aCandidate, const nsAString& aMid,
                       unsigned short aLevel, ErrorResult &rv)
  {
    rv = AddIceCandidate(NS_ConvertUTF16toUTF8(aCandidate).get(),
                         NS_ConvertUTF16toUTF8(aMid).get(), aLevel);
  }

  NS_IMETHODIMP CloseStreams();

  void CloseStreams(ErrorResult &rv)
  {
    rv = CloseStreams();
  }

  NS_IMETHODIMP_TO_ERRORRESULT(AddTrack, ErrorResult &rv,
      mozilla::dom::MediaStreamTrack& aTrack,
      const mozilla::dom::Sequence<mozilla::OwningNonNull<DOMMediaStream>>& aStreams)
  {
    rv = AddTrack(aTrack, aStreams);
  }

  NS_IMETHODIMP_TO_ERRORRESULT(RemoveTrack, ErrorResult &rv,
                               mozilla::dom::MediaStreamTrack& aTrack)
  {
    rv = RemoveTrack(aTrack);
  }

  nsresult
  AddTrack(mozilla::dom::MediaStreamTrack& aTrack, DOMMediaStream& aStream);

  NS_IMETHODIMP_TO_ERRORRESULT(InsertDTMF, ErrorResult &rv,
                               dom::RTCRtpSender& sender,
                               const nsAString& tones,
                               uint32_t duration, uint32_t interToneGap) {
    rv = InsertDTMF(sender, tones, duration, interToneGap);
  }

  NS_IMETHODIMP_TO_ERRORRESULT(GetDTMFToneBuffer, ErrorResult &rv,
                               dom::RTCRtpSender& sender,
                               nsAString& outToneBuffer) {
    rv = GetDTMFToneBuffer(sender, outToneBuffer);
  }

  NS_IMETHODIMP_TO_ERRORRESULT(ReplaceTrack, ErrorResult &rv,
                               mozilla::dom::MediaStreamTrack& aThisTrack,
                               mozilla::dom::MediaStreamTrack& aWithTrack)
  {
    rv = ReplaceTrack(aThisTrack, aWithTrack);
  }

#if !defined(MOZILLA_EXTERNAL_LINKAGE)
  NS_IMETHODIMP_TO_ERRORRESULT(SetParameters, ErrorResult &rv,
                               dom::MediaStreamTrack& aTrack,
                               const dom::RTCRtpParameters& aParameters)
  {
    rv = SetParameters(aTrack, aParameters);
  }

  NS_IMETHODIMP_TO_ERRORRESULT(GetParameters, ErrorResult &rv,
                               dom::MediaStreamTrack& aTrack,
                               dom::RTCRtpParameters& aOutParameters)
  {
    rv = GetParameters(aTrack, aOutParameters);
  }
#endif

  nsresult
  SetParameters(dom::MediaStreamTrack& aTrack,
                const std::vector<JsepTrack::JsConstraints>& aConstraints);

  nsresult
  GetParameters(dom::MediaStreamTrack& aTrack,
                std::vector<JsepTrack::JsConstraints>* aOutConstraints);

  NS_IMETHODIMP_TO_ERRORRESULT(SelectSsrc, ErrorResult &rv,
                               dom::MediaStreamTrack& aRecvTrack,
                               unsigned short aSsrcIndex)
  {
    rv = SelectSsrc(aRecvTrack, aSsrcIndex);
  }

  nsresult GetPeerIdentity(nsAString& peerIdentity)
  {
#if !defined(MOZILLA_EXTERNAL_LINKAGE)
    if (mPeerIdentity) {
      peerIdentity = mPeerIdentity->ToString();
      return NS_OK;
    }
#endif

    peerIdentity.SetIsVoid(true);
    return NS_OK;
  }

#if !defined(MOZILLA_EXTERNAL_LINKAGE)
  const PeerIdentity* GetPeerIdentity() const { return mPeerIdentity; }
  nsresult SetPeerIdentity(const nsAString& peerIdentity);

  const std::string& GetIdAsAscii() const
  {
    return mName;
  }

  nsresult GetId(nsAString& id)
  {
    id = NS_ConvertASCIItoUTF16(mName.c_str());
    return NS_OK;
  }

  nsresult SetId(const nsAString& id)
  {
    mName = NS_ConvertUTF16toUTF8(id).get();
    return NS_OK;
  }
#endif

  // this method checks to see if we've made a promise to protect media.
  bool PrivacyRequested() const { return mPrivacyRequested; }

  NS_IMETHODIMP GetFingerprint(char** fingerprint);
  void GetFingerprint(nsAString& fingerprint)
  {
    char *tmp;
    GetFingerprint(&tmp);
    fingerprint.AssignASCII(tmp);
    delete[] tmp;
  }

  NS_IMETHODIMP GetLocalDescription(char** aSDP);

  void GetLocalDescription(nsAString& aSDP)
  {
    char *tmp;
    GetLocalDescription(&tmp);
    aSDP.AssignASCII(tmp);
    delete[] tmp;
  }

  NS_IMETHODIMP GetRemoteDescription(char** aSDP);

  void GetRemoteDescription(nsAString& aSDP)
  {
    char *tmp;
    GetRemoteDescription(&tmp);
    aSDP.AssignASCII(tmp);
    delete[] tmp;
  }

  NS_IMETHODIMP SignalingState(mozilla::dom::PCImplSignalingState* aState);

  mozilla::dom::PCImplSignalingState SignalingState()
  {
    mozilla::dom::PCImplSignalingState state;
    SignalingState(&state);
    return state;
  }

  NS_IMETHODIMP IceConnectionState(
      mozilla::dom::PCImplIceConnectionState* aState);

  mozilla::dom::PCImplIceConnectionState IceConnectionState()
  {
    mozilla::dom::PCImplIceConnectionState state;
    IceConnectionState(&state);
    return state;
  }

  NS_IMETHODIMP IceGatheringState(
      mozilla::dom::PCImplIceGatheringState* aState);

  mozilla::dom::PCImplIceGatheringState IceGatheringState()
  {
    mozilla::dom::PCImplIceGatheringState state;
    IceGatheringState(&state);
    return state;
  }

  NS_IMETHODIMP Close();

  void Close(ErrorResult &rv)
  {
    rv = Close();
  }

  bool PluginCrash(uint32_t aPluginID,
                   const nsAString& aPluginName);

  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);

  NS_IMETHODIMP_TO_ERRORRESULT(GetLocalStreams, ErrorResult &rv,
                               nsTArray<RefPtr<DOMMediaStream > >& result)
  {
    rv = GetLocalStreams(result);
  }

  NS_IMETHODIMP_TO_ERRORRESULT(GetRemoteStreams, ErrorResult &rv,
                               nsTArray<RefPtr<DOMMediaStream > >& result)
  {
    rv = GetRemoteStreams(result);
  }

  // Called whenever something is unrecognized by the parser
  // May be called more than once and does not necessarily mean
  // that parsing was stopped, only that something was unrecognized.
  void OnSdpParseError(const char* errorMessage);

  // Called when OnLocal/RemoteDescriptionSuccess/Error
  // is called to start the list over.
  void ClearSdpParseErrorMessages();

  // Called to retreive the list of parsing errors.
  const std::vector<std::string> &GetSdpParseErrors();

  // Sets the RTC Signaling State
  void SetSignalingState_m(mozilla::dom::PCImplSignalingState aSignalingState,
                           bool rollback = false);

  // Updates the RTC signaling state based on the JsepSession state
  void UpdateSignalingState(bool rollback = false);

  bool IsClosed() const;
  // called when DTLS connects; we only need this once
  nsresult SetDtlsConnected(bool aPrivacyRequested);

  bool HasMedia() const;

#if !defined(MOZILLA_EXTERNAL_LINKAGE)
  nsresult BuildStatsQuery_m(
      mozilla::dom::MediaStreamTrack *aSelector,
      RTCStatsQuery *query);

  static nsresult ExecuteStatsQuery_s(RTCStatsQuery *query);

  // for monitoring changes in track ownership
  // PeerConnectionMedia can't do it because it doesn't know about principals
  virtual void PrincipalChanged(dom::MediaStreamTrack* aTrack) override;

#endif

  static std::string GetStreamId(const DOMMediaStream& aStream);
  static std::string GetTrackId(const dom::MediaStreamTrack& track);

  void OnMediaError(const std::string& aError);

private:
  virtual ~PeerConnectionImpl();
  PeerConnectionImpl(const PeerConnectionImpl&rhs);
  PeerConnectionImpl& operator=(PeerConnectionImpl);
  nsresult CalculateFingerprint(const std::string& algorithm,
                                std::vector<uint8_t>* fingerprint) const;
  nsresult ConfigureJsepSessionCodecs();

  NS_IMETHODIMP EnsureDataConnection(uint16_t aNumstreams);

  nsresult CloseInt();
  nsresult CheckApiState(bool assert_ice_ready) const;
  void CheckThread() const {
    MOZ_ASSERT(CheckThreadInt(), "Wrong thread");
  }
  bool CheckThreadInt() const {
#if !defined(MOZILLA_EXTERNAL_LINKAGE)
    // Thread assertions are disabled in the C++ unit tests because those
    // make API calls off the main thread.
    // This affects the standalone version of WebRTC since it is also used
    // for an alternate build of the unit tests.
    // TODO(ekr@rtfm.com): Fix the unit tests so they don't do that.
    bool on;
    NS_ENSURE_SUCCESS(mThread->IsOnCurrentThread(&on), false);
    NS_ENSURE_TRUE(on, false);
#endif
    return true;
  }

#if !defined(MOZILLA_EXTERNAL_LINKAGE)
  nsresult GetTimeSinceEpoch(DOMHighResTimeStamp *result);
#endif

  // Shut down media - called on main thread only
  void ShutdownMedia();

  void CandidateReady(const std::string& candidate, uint16_t level);
  void SendLocalIceCandidateToContent(uint16_t level,
                                      const std::string& mid,
                                      const std::string& candidate);

  nsresult GetDatachannelParameters(
      const mozilla::JsepApplicationCodecDescription** codec,
      uint16_t* level) const;

  static void DeferredAddTrackToJsepSession(const std::string& pcHandle,
                                            SdpMediaSection::MediaType type,
                                            const std::string& streamId,
                                            const std::string& trackId);

  nsresult AddTrackToJsepSession(SdpMediaSection::MediaType type,
                                 const std::string& streamId,
                                 const std::string& trackId);

  nsresult SetupIceRestart();
  nsresult RollbackIceRestart();
  void FinalizeIceRestart();

#if !defined(MOZILLA_EXTERNAL_LINKAGE)
  static void GetStatsForPCObserver_s(
      const std::string& pcHandle,
      nsAutoPtr<RTCStatsQuery> query);

  // Sends an RTCStatsReport to JS. Must run on main thread.
  static void DeliverStatsReportToPCObserver_m(
      const std::string& pcHandle,
      nsresult result,
      nsAutoPtr<RTCStatsQuery> query);
#endif

  // When ICE completes, we record a bunch of statistics that outlive the
  // PeerConnection. This is just telemetry right now, but this can also
  // include things like dumping the RLogConnector somewhere, saving away
  // an RTCStatsReport somewhere so it can be inspected after the call is over,
  // or other things.
  void RecordLongtermICEStatistics();

  void OnNegotiationNeeded();
  static void MaybeFireNegotiationNeeded_static(const std::string& pcHandle);
  void MaybeFireNegotiationNeeded();

  // 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;

  mozilla::dom::PCImplSignalingState mSignalingState;

  // ICE State
  mozilla::dom::PCImplIceConnectionState mIceConnectionState;
  mozilla::dom::PCImplIceGatheringState mIceGatheringState;

  // DTLS
  // this is true if we have been connected ever, see SetDtlsConnected
  bool mDtlsConnected;

  nsCOMPtr<nsIThread> mThread;
  // TODO: Remove if we ever properly wire PeerConnection for cycle-collection.
  nsWeakPtr mPCObserver;

  nsCOMPtr<nsPIDOMWindowInner> mWindow;

  // The SDP sent in from JS - here for debugging.
  std::string mLocalRequestedSDP;
  std::string mRemoteRequestedSDP;

  // DTLS fingerprint
  std::string mFingerprint;
  std::string mRemoteFingerprint;

  // identity-related fields
#if !defined(MOZILLA_EXTERNAL_LINKAGE)
  // 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;
#else
  RefPtr<DtlsIdentity> mIdentity;
#endif
  // 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
  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<nsIEventTarget> mSTSThread;

#if !defined(MOZILLA_EXTERNAL_LINKAGE)
  // DataConnection that's used to get all the DataChannels
  RefPtr<mozilla::DataChannelConnection> mDataConnection;
#endif

  bool mAllowIceLoopback;
  bool mAllowIceLinkLocal;
  RefPtr<PeerConnectionMedia> mMedia;

  // The JSEP negotiation session.
  mozilla::UniquePtr<PCUuidGenerator> mUuidGen;
  mozilla::UniquePtr<mozilla::JsepSession> mJsepSession;
  std::string mPreviousIceUfrag; // used during rollback of ice restart
  std::string mPreviousIcePwd; // used during rollback of ice restart

#if !defined(MOZILLA_EXTERNAL_LINKAGE)
  // Start time of ICE, used for telemetry
  mozilla::TimeStamp mIceStartTime;
  // Start time of call used for Telemetry
  mozilla::TimeStamp mStartTime;
#endif

  // Temporary: used to prevent multiple audio streams or multiple video streams
  // in a single PC. This is tied up in the IETF discussion around proper
  // representation of multiple streams in SDP, and strongly related to
  // Bug 840728.
  int mNumAudioStreams;
  int mNumVideoStreams;
  bool mHaveConfiguredCodecs;

  bool mHaveDataStream;

  unsigned int mAddCandidateErrorCount;

  bool mTrickle;

  bool mNegotiationNeeded;

  bool mPrivateWindow;

  // storage for Telemetry data
  uint16_t mMaxReceiving[SdpMediaSection::kMediaTypes];
  uint16_t mMaxSending[SdpMediaSection::kMediaTypes];

  // DTMF
  class DTMFState : public nsITimerCallback {
      virtual ~DTMFState();
    public:
      DTMFState();

      NS_DECL_NSITIMERCALLBACK
      NS_DECL_THREADSAFE_ISUPPORTS

      PeerConnectionImpl* mPeerConnectionImpl;
      nsCOMPtr<nsITimer> mSendTimer;
      nsString mTrackId;
      nsString mTones;
      size_t mLevel;
      uint32_t mDuration;
      uint32_t mInterToneGap;
  };

  nsTArray<RefPtr<DTMFState>> mDTMFStates;

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_;
};

}  // end mozilla namespace

#undef NS_IMETHODIMP_TO_ERRORRESULT
#undef NS_IMETHODIMP_TO_ERRORRESULT_RETREF
#endif  // _PEER_CONNECTION_IMPL_H_