Start ICE connectivity checks as soon as the first pair is pingable.

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 28 matching lines @@
 
   // For ICE channels.
   virtual IceRole GetIceRole() const = 0;
   virtual void SetIceRole(IceRole role) = 0;
   virtual void SetIceTiebreaker(uint64_t 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.
+  // The ufrag and pwd must be set before candidate gathering can start.
   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 SetIceConfig(const IceConfig& config) = 0;
 
-  // Begins the process of attempting to make a connection to the other client.
-  virtual void Connect() = 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.
   //
@@ skipping 28 matching lines @@
   // Emitted whenever the transport channel state changed.
   sigslot::signal1<TransportChannelImpl*> SignalStateChanged;
 
  private:
   RTC_DISALLOW_COPY_AND_ASSIGN(TransportChannelImpl);
 };
 
 }  // namespace cricket
 
 #endif  // WEBRTC_P2P_BASE_TRANSPORTCHANNELIMPL_H_