Remove the dependency of TransportChannel and TransportChannelImpl.

webrtc/p2p/base/transportchannel.h

Index: webrtc/p2p/base/transportchannel.h
diff --git a/webrtc/p2p/base/transportchannel.h b/webrtc/p2p/base/transportchannel.h
deleted file mode 100644
index 7c13f92ee703ecbbf54dae94c676670453ae7ae0..0000000000000000000000000000000000000000
--- a/webrtc/p2p/base/transportchannel.h
+++ /dev/null
@@ -1,163 +0,0 @@
-/*
- *  Copyright 2004 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 WEBRTC_P2P_BASE_TRANSPORTCHANNEL_H_
-#define WEBRTC_P2P_BASE_TRANSPORTCHANNEL_H_
-
-#include <memory>
-#include <string>
-#include <vector>
-
-#include "webrtc/base/asyncpacketsocket.h"
-#include "webrtc/base/basictypes.h"
-#include "webrtc/base/constructormagic.h"
-#include "webrtc/base/dscp.h"
-#include "webrtc/base/sigslot.h"
-#include "webrtc/base/socket.h"
-#include "webrtc/base/sslidentity.h"
-#include "webrtc/base/sslstreamadapter.h"
-#include "webrtc/p2p/base/candidate.h"
-#include "webrtc/p2p/base/candidatepairinterface.h"
-#include "webrtc/p2p/base/icetransportinternal.h"
-#include "webrtc/p2p/base/jseptransport.h"
-#include "webrtc/p2p/base/packettransportinterface.h"
-#include "webrtc/p2p/base/transportdescription.h"
-
-namespace cricket {
-
-class Candidate;
-
-// Flags for SendPacket/SignalReadPacket.
-enum PacketFlags {
-  PF_NORMAL       = 0x00,  // A normal packet.
-  PF_SRTP_BYPASS  = 0x01,  // An encrypted SRTP packet; bypass any additional
-                           // crypto provided by the transport (e.g. DTLS)
-};
-
-// A TransportChannel represents one logical stream of packets that are sent
-// between the two sides of a session.
-// TODO(deadbeef): This interface currently represents the unity of an ICE
-// transport and a DTLS transport. They need to be separated apart.
-class TransportChannel : public rtc::PacketTransportInterface {
- public:
-  TransportChannel(const std::string& transport_name, int component)
-      : transport_name_(transport_name),
-        component_(component),
-        writable_(false),
-        receiving_(false) {}
-  virtual ~TransportChannel() {}
-
-  // TODO(guoweis) - Make this pure virtual once all subclasses of
-  // TransportChannel have this defined.
-  virtual IceTransportState GetState() const {
-    return IceTransportState::STATE_CONNECTING;
-  }
-
-  const std::string& transport_name() const { return transport_name_; }
-  int component() const { return component_; }
-  const std::string debug_name() const override {
-    return transport_name() + " " + std::to_string(component());
-  }
-
-  // Returns the states of this channel.  Each time one of these states changes,
-  // a signal is raised.  These states are aggregated by the TransportManager.
-  bool writable() const override { return writable_; }
-  bool receiving() const override { return receiving_; }
-  DtlsTransportState dtls_state() const { return dtls_state_; }
-  // Emitted whenever DTLS-SRTP is setup which will require setting up a new
-  // SRTP context.
-  sigslot::signal2<TransportChannel*, DtlsTransportState> SignalDtlsState;
-
-  // Returns the current stats for this connection.
-  virtual bool GetStats(ConnectionInfos* infos) = 0;
-
-  // Is DTLS active?
-  virtual bool IsDtlsActive() const = 0;
-
-  // Default implementation.
-  virtual bool GetSslRole(rtc::SSLRole* role) const = 0;
-
-  // Sets up the ciphers to use for DTLS-SRTP. TODO(guoweis): Make this pure
-  // virtual once all dependencies have implementation.
-  virtual bool SetSrtpCryptoSuites(const std::vector<int>& ciphers);
-
-  // Keep the original one for backward compatibility until all dependencies
-  // move away. TODO(guoweis): Remove this function.
-  virtual bool SetSrtpCiphers(const std::vector<std::string>& ciphers);
-
-  // Finds out which DTLS-SRTP cipher was negotiated.
-  // TODO(guoweis): Remove this once all dependencies implement this.
-  virtual bool GetSrtpCryptoSuite(int* cipher) { return false; }
-
-  // Finds out which DTLS cipher was negotiated.
-  // TODO(guoweis): Remove this once all dependencies implement this.
-  virtual bool GetSslCipherSuite(int* cipher) { return false; }
-
-  // Gets the local RTCCertificate used for DTLS.
-  virtual rtc::scoped_refptr<rtc::RTCCertificate>
-  GetLocalCertificate() const = 0;
-
-  // Gets a copy of the remote side's SSL certificate.
-  virtual std::unique_ptr<rtc::SSLCertificate> GetRemoteSSLCertificate()
-      const = 0;
-
-  // Allows key material to be extracted for external encryption.
-  virtual bool ExportKeyingMaterial(const std::string& label,
-                                    const uint8_t* context,
-                                    size_t context_len,
-                                    bool use_context,
-                                    uint8_t* result,
-                                    size_t result_len) = 0;
-
-  // Deprecated by SignalSelectedCandidatePairChanged
-  // This signal occurs when there is a change in the way that packets are
-  // being routed, i.e. to a different remote location. The candidate
-  // indicates where and how we are currently sending media.
-  sigslot::signal2<TransportChannel*, const Candidate&> SignalRouteChange;
-
-  // Signalled when the current selected candidate pair has changed.
-  // The first parameter is the transport channel that signals the event.
-  // The second parameter is the new selected candidate pair. The third
-  // parameter is the last packet id sent on the previous candidate pair.
-  // The fourth parameter is a boolean which is true if the TransportChannel
-  // is ready to send with this candidate pair.
-  sigslot::signal4<TransportChannel*, CandidatePairInterface*, int, bool>
-      SignalSelectedCandidatePairChanged;
-
-  // Invoked when the channel is being destroyed.
-  sigslot::signal1<TransportChannel*> SignalDestroyed;
-
-  // Debugging description of this transport channel.
-  std::string ToString() const;
-
- protected:
-  // Sets the writable state, signaling if necessary.
-  void set_writable(bool writable);
-
-  // Sets the receiving state, signaling if necessary.
-  void set_receiving(bool receiving);
-
-  // Sets the DTLS state, signaling if necessary.
-  void set_dtls_state(DtlsTransportState state);
-
- private:
-  // Used mostly for debugging.
-  std::string transport_name_;
-  int component_;
-  bool writable_;
-  bool receiving_;
-  DtlsTransportState dtls_state_ = DTLS_TRANSPORT_NEW;
-
-  RTC_DISALLOW_COPY_AND_ASSIGN(TransportChannel);
-};
-
-}  // namespace cricket
-
-#endif  // WEBRTC_P2P_BASE_TRANSPORTCHANNEL_H_