Reset the BWE when the network changes

webrtc/p2p/base/port.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.
  */
 
 #ifndef WEBRTC_P2P_BASE_PORT_H_
 #define WEBRTC_P2P_BASE_PORT_H_
 
 #include <map>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "webrtc/p2p/base/candidate.h"
+#include "webrtc/p2p/base/candidatepairinterface.h"
 #include "webrtc/p2p/base/packetsocketfactory.h"
 #include "webrtc/p2p/base/portinterface.h"
 #include "webrtc/p2p/base/stun.h"
 #include "webrtc/p2p/base/stunrequest.h"
 #include "webrtc/p2p/base/transport.h"
 #include "webrtc/base/asyncpacketsocket.h"
 #include "webrtc/base/network.h"
 #include "webrtc/base/proxyinfo.h"
 #include "webrtc/base/ratetracker.h"
 #include "webrtc/base/sigslot.h"
@@ skipping 373 matching lines @@
   // A virtual cost perceived by the user, usually based on the network type
   // (WiFi. vs. Cellular). It takes precedence over the priority when
   // comparing two connections.
   uint16_t network_cost_;
 
   friend class Connection;
 };
 
 // Represents a communication link between a port on the local client and a
 // port on the remote client.
-class Connection : public rtc::MessageHandler,
-    public sigslot::has_slots<> {
+class Connection : public CandidatePairInterface,
+                   public rtc::MessageHandler,
+                   public sigslot::has_slots<> {
  public:
   struct SentPing {
     SentPing(const std::string id, int64_t sent_time)
         : id(id), sent_time(sent_time) {}
 
     std::string id;
     int64_t sent_time;
   };
 
   // States are from RFC 5245. http://tools.ietf.org/html/rfc5245#section-5.7.4
   enum State {
     STATE_WAITING = 0,  // Check has not been performed, Waiting pair on CL.
     STATE_INPROGRESS,   // Check has been sent, transaction is in progress.
     STATE_SUCCEEDED,    // Check already done, produced a successful result.
     STATE_FAILED        // Check for this connection failed.
   };
 
   virtual ~Connection();
 
   // The local port where this connection sends and receives packets.
   Port* port() { return port_; }
   const Port* port() const { return port_; }
 
+  // Implementation of virtual methods in CandidatePairInterface.
   // Returns the description of the local port
   virtual const Candidate& local_candidate() const;
-
   // Returns the description of the remote port to which we communicate.
-  const Candidate& remote_candidate() const { return remote_candidate_; }
+  virtual const Candidate& remote_candidate() const;
 
   // Returns the pair priority.
   uint64_t priority() const;
 
   enum WriteState {
     STATE_WRITABLE          = 0,  // we have received ping responses recently
     STATE_WRITE_UNRELIABLE  = 1,  // we have had a few ping failures
     STATE_WRITE_INIT        = 2,  // we have yet to receive a ping response
     STATE_WRITE_TIMEOUT     = 3,  // we have had a large number of ping failures
   };
@@ skipping 212 matching lines @@
            const rtc::PacketOptions& options) override;
   int GetError() override { return error_; }
 
  private:
   int error_ = 0;
 };
 
 }  // namespace cricket
 
 #endif  // WEBRTC_P2P_BASE_PORT_H_