Log how often DTLS negotiation failed because of incompatible ciphersuites.

webrtc/p2p/base/transportcontroller.h

 /*
  *  Copyright 2015 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 101 matching lines @@
 
   // (transport_name, candidates)
   sigslot::signal2<const std::string&, const Candidates&>
       SignalCandidatesGathered;
 
   sigslot::signal1<const Candidates&> SignalCandidatesRemoved;
 
   // for unit test
   const rtc::scoped_refptr<rtc::RTCCertificate>& certificate_for_testing();
 
+  sigslot::signal1<rtc::SSLHandshakeError> SignalDtlsHandshakeError;
+
  protected:
   // Protected and virtual so we can override it in unit tests.
   virtual Transport* CreateTransport_n(const std::string& transport_name);
 
   // For unit tests
   const std::map<std::string, Transport*>& transports() { return transports_; }
   Transport* GetTransport_n(const std::string& transport_name);
 
  private:
   void OnMessage(rtc::Message* pmsg) override;
@@ skipping 63 matching lines @@
   void OnChannelCandidateGathered_n(TransportChannelImpl* channel,
                                     const Candidate& candidate);
   void OnChannelCandidatesRemoved(const Candidates& candidates);
   void OnChannelCandidatesRemoved_n(TransportChannelImpl* channel,
                                     const Candidates& candidates);
   void OnChannelRoleConflict_n(TransportChannelImpl* channel);
   void OnChannelStateChanged_n(TransportChannelImpl* channel);
 
   void UpdateAggregateStates_n();
 
+  void OnDtlsHandshakeError(rtc::SSLHandshakeError error);
+
   rtc::Thread* const signaling_thread_ = nullptr;
   rtc::Thread* const network_thread_ = nullptr;
   typedef std::map<std::string, Transport*> TransportMap;
   TransportMap transports_;
 
   std::vector<RefCountedChannel> channels_;
 
   PortAllocator* const port_allocator_ = nullptr;
   rtc::SSLProtocolVersion ssl_max_version_ = rtc::SSL_PROTOCOL_DTLS_12;
 
   // Aggregate state for TransportChannelImpls.
   IceConnectionState connection_state_ = kIceConnectionConnecting;
   bool receiving_ = false;
   IceGatheringState gathering_state_ = kIceGatheringNew;
 
   // TODO(deadbeef): Move the fields below down to the transports themselves
   IceConfig ice_config_;
   IceRole ice_role_ = ICEROLE_CONTROLLING;
   uint64_t ice_tiebreaker_ = rtc::CreateRandomId64();
   rtc::scoped_refptr<rtc::RTCCertificate> certificate_;
   rtc::AsyncInvoker invoker_;
   // True if QUIC is used instead of DTLS.
   bool quic_ = false;
 };
 
 }  // namespace cricket
 
 #endif  // WEBRTC_P2P_BASE_TRANSPORTCONTROLLER_H_