TransportController refactoring.

webrtc/p2p/base/transportchannelimpl.h

 /*
  *  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.
  */
 
@@ skipping 14 matching lines @@
 // remoting/protocol/libjingle_transport_factory.cc
 enum IceProtocolType {
   ICEPROTO_RFC5245  // Standard RFC 5245 version of ICE.
 };
 
 // Base class for real implementations of TransportChannel.  This includes some
 // methods called only by Transport, which do not need to be exposed to the
 // client.
 class TransportChannelImpl : public TransportChannel {
  public:
-  explicit TransportChannelImpl(const std::string& content_name, int component)
-      : TransportChannel(content_name, component) {}
+  explicit TransportChannelImpl(const std::string& transport_name,
+                                int component)
+      : TransportChannel(transport_name, component) {}
 
   // Returns the transport that created this channel.
   virtual Transport* GetTransport() = 0;
 
   // For ICE channels.
   virtual IceRole GetIceRole() const = 0;
   virtual void SetIceRole(IceRole role) = 0;
   virtual void SetIceTiebreaker(uint64 tiebreaker) = 0;
   // TODO(pthatcher): Remove this once it's no longer called in
   // remoting/protocol/libjingle_transport_factory.cc
   virtual void SetIceProtocolType(IceProtocolType type) {}
   // SetIceCredentials only need to be implemented by the ICE
   // transport channels. Non-ICE transport channels can just ignore.
   // The ufrag and pwd should be set before the Connect() is called.
   virtual void SetIceCredentials(const std::string& ice_ufrag,
                                  const std::string& ice_pwd)  = 0;
   // SetRemoteIceCredentials only need to be implemented by the ICE
   // transport channels. Non-ICE transport channels can just ignore.
   virtual void SetRemoteIceCredentials(const std::string& ice_ufrag,
                                        const std::string& ice_pwd) = 0;
 
   // SetRemoteIceMode must be implemented only by the ICE transport channels.
   virtual void SetRemoteIceMode(IceMode mode) = 0;
 
   virtual void SetReceivingTimeout(int timeout_ms) = 0;
 
   // Begins the process of attempting to make a connection to the other client.
   virtual void Connect() = 0;
 
-  // Allows an individual channel to request signaling and be notified when it
-  // is ready.  This is useful if the individual named channels have need to
-  // send their own transport-info stanzas.
-  sigslot::signal1<TransportChannelImpl*> SignalRequestSignaling;
-  virtual void OnSignalingReady() = 0;
+  // Start gathering candidates if not already started, or if an ICE restart
+  // occurred.
+  virtual void MaybeStartGathering() = 0;
+
+  sigslot::signal1<TransportChannelImpl*> SignalGatheringState;
 
   // Handles sending and receiving of candidates.  The Transport
   // receives the candidates and may forward them to the relevant
   // channel.
   //
   // Note: Since candidates are delivered asynchronously to the
   // channel, they cannot return an error if the message is invalid.
   // It is assumed that the Transport will have checked validity
   // before forwarding.
-  sigslot::signal2<TransportChannelImpl*,
-                   const Candidate&> SignalCandidateReady;
-  virtual void OnCandidate(const Candidate& candidate) = 0;
+  sigslot::signal2<TransportChannelImpl*, const Candidate&>
+      SignalCandidateGathered;
+  virtual void AddRemoteCandidate(const Candidate& candidate) = 0;
+
+  virtual IceGatheringState gathering_state() const = 0;
 
   // DTLS methods
   virtual bool SetLocalCertificate(
       const rtc::scoped_refptr<rtc::RTCCertificate>& certificate) = 0;
 
   // Set DTLS Remote fingerprint. Must be after local identity set.
   virtual bool SetRemoteFingerprint(const std::string& digest_alg,
     const uint8* digest,
     size_t digest_len) = 0;
 
   virtual bool SetSslRole(rtc::SSLRole role) = 0;
 
-  // TransportChannel is forwarding this signal from PortAllocatorSession.
-  sigslot::signal1<TransportChannelImpl*> SignalCandidatesAllocationDone;
-
   // Invoked when there is conflict in the ICE role between local and remote
   // agents.
   sigslot::signal1<TransportChannelImpl*> SignalRoleConflict;
 
   // Emitted whenever the number of connections available to the transport
   // channel decreases.
   sigslot::signal1<TransportChannelImpl*> SignalConnectionRemoved;
 
  private:
   RTC_DISALLOW_COPY_AND_ASSIGN(TransportChannelImpl);
 };
 
 }  // namespace cricket
 
 #endif  // WEBRTC_P2P_BASE_TRANSPORTCHANNELIMPL_H_