Use continual gathering to restore backup connections

webrtc/p2p/base/portinterface.h

 /*
  *  Copyright 2012 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 105 matching lines @@
   // through this port.
   virtual void EnablePortPackets() = 0;
   sigslot::signal4<PortInterface*, const char*, size_t,
                    const rtc::SocketAddress&> SignalReadPacket;
 
   // Emitted each time a packet is sent on this port.
   sigslot::signal1<const rtc::SentPacket&> SignalSentPacket;
 
   virtual std::string ToString() const = 0;
 
+  virtual void FailAndDestroyConnections() = 0;

[pthatcher1, 2016/06/07 18:54:34]

***

+
  protected:
   PortInterface() {}
 };
 
 }  // namespace cricket
 
 #endif  // WEBRTC_P2P_BASE_PORTINTERFACE_H_