text: /*
   *  Copyright 2018 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.
   */
  
  #ifndef PC_PEER_CONNECTION_INTERNAL_H_
  #define PC_PEER_CONNECTION_INTERNAL_H_
  
  #include <map>
  #include <memory>
  #include <set>
  #include <string>
  #include <vector>
  
  #include "api/peer_connection_interface.h"
  #include "call/call.h"
  #include "pc/data_channel.h"
  #include "pc/rtp_transceiver.h"
  
  namespace webrtc {
  
  // Internal interface for extra PeerConnection methods.
  class PeerConnectionInternal : public PeerConnectionInterface {
   public:
    virtual rtc::Thread* network_thread() const = 0;
    virtual rtc::Thread* worker_thread() const = 0;
    virtual rtc::Thread* signaling_thread() const = 0;
  
    // The SDP session ID as defined by RFC 3264.
    virtual std::string session_id() const = 0;
  
    // Returns true if we were the initial offerer.
    virtual bool initial_offerer() const = 0;
  
    virtual std::vector<
        rtc::scoped_refptr<RtpTransceiverProxyWithInternal<RtpTransceiver>>>
    GetTransceiversInternal() const = 0;
  
    virtual sigslot::signal1<DataChannel*>& SignalDataChannelCreated() = 0;
  
    // Only valid when using deprecated RTP data channels.
    virtual cricket::RtpDataChannel* rtp_data_channel() const = 0;
  
    // Call on the network thread to fetch stats for all the data channels.
    // TODO(tommi): Make pure virtual after downstream updates.
    virtual std::vector<DataChannel::Stats> GetDataChannelStats() const {
      return {};
    }
  
    virtual absl::optional<std::string> sctp_transport_name() const = 0;
  
    virtual cricket::CandidateStatsList GetPooledCandidateStats() const = 0;
  
    // Returns a map from MID to transport name for all active media sections.
    virtual std::map<std::string, std::string> GetTransportNamesByMid() const = 0;
  
    // Returns a map from transport name to transport stats for all given
    // transport names.
    virtual std::map<std::string, cricket::TransportStats>
    GetTransportStatsByNames(const std::set<std::string>& transport_names) = 0;
  
    virtual Call::Stats GetCallStats() = 0;
  
    virtual bool GetLocalCertificate(
        const std::string& transport_name,
        rtc::scoped_refptr<rtc::RTCCertificate>* certificate) = 0;
    virtual std::unique_ptr<rtc::SSLCertChain> GetRemoteSSLCertChain(
        const std::string& transport_name) = 0;
  
    // Returns true if there was an ICE restart initiated by the remote offer.
    virtual bool IceRestartPending(const std::string& content_name) const = 0;
  
    // Returns true if the ICE restart flag above was set, and no ICE restart has
    // occurred yet for this transport (by applying a local description with
    // changed ufrag/password). If the transport has been deleted as a result of
    // bundling, returns false.
    virtual bool NeedsIceRestart(const std::string& content_name) const = 0;
  
    // Get SSL role for an arbitrary m= section (handles bundling correctly).
    virtual bool GetSslRole(const std::string& content_name,
                            rtc::SSLRole* role) = 0;
  };
  
  }  // namespace webrtc
  
  #endif  // PC_PEER_CONNECTION_INTERNAL_H_
  