Use continual gathering to restore backup connections

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.
  */
 
@@ skipping 124 matching lines @@
        const rtc::IPAddress& ip,
        uint16_t min_port,
        uint16_t max_port,
        const std::string& username_fragment,
        const std::string& password);
   virtual ~Port();
 
   virtual const std::string& Type() const { return type_; }
   virtual rtc::Network* Network() const { return network_; }
 
+  virtual void FailAndDestroyConnections();
+
   // Methods to set/get ICE role and tiebreaker values.
   IceRole GetIceRole() const { return ice_role_; }
   void SetIceRole(IceRole role) { ice_role_ = role; }
 
   void SetIceTiebreaker(uint64_t tiebreaker) { tiebreaker_ = tiebreaker; }
   uint64_t IceTiebreaker() const { return tiebreaker_; }
 
   virtual bool SharedSocket() const { return shared_socket_; }
   void ResetSharedSocket() { shared_socket_ = false; }
 
   // The thread on which this port performs its I/O.
   rtc::Thread* thread() { return thread_; }
 
   // The factory used to create the sockets of this port.
   rtc::PacketSocketFactory* socket_factory() const { return factory_; }
   void set_socket_factory(rtc::PacketSocketFactory* factory) {
     factory_ = factory;
   }
 
+  void CloseAndSignalCandidateRemovals();
+
   // For debugging purposes.
   const std::string& content_name() const { return content_name_; }
   void set_content_name(const std::string& content_name) {
     content_name_ = content_name;
   }
 
   int component() const { return component_; }
   void set_component(int component) { component_ = component; }
 
   bool send_retransmit_count_attribute() const {
@@ skipping 14 matching lines @@
   // PortAllocatorSession, and is now being assigned to an ICE transport.
   // Updates the information for candidates as well.
   void SetIceParameters(int component,
                         const std::string& username_fragment,
                         const std::string& password);
 
   // Fired when candidates are discovered by the port. When all candidates
   // are discovered that belong to port SignalAddressReady is fired.
   sigslot::signal2<Port*, const Candidate&> SignalCandidateReady;
 
+  // Fired when candidates need to be signaled for removing on the remote side.
+  sigslot::signal2<Port*, const std::vector<Candidate>&>
+      SignalCandidatesRemoved;
+
   // Provides all of the above information in one handy object.
   virtual const std::vector<Candidate>& Candidates() const {
     return candidates_;
   }
 
   // SignalPortComplete is sent when port completes the task of candidates
   // allocation.
   sigslot::signal1<Port*> SignalPortComplete;
   // This signal sent when port fails to allocate candidates and this port
   // can't be used in establishing the connections. When port is in shared mode
@@ skipping 182 matching lines @@
   std::vector<Candidate> candidates_;
   AddressMap connections_;
   int timeout_delay_;
   bool enable_port_packets_;
   IceRole ice_role_;
   uint64_t tiebreaker_;
   bool shared_socket_;
   // Information to use when going through a proxy.
   std::string user_agent_;
   rtc::ProxyInfo proxy_;
+  bool closed_ = false;
 
   // 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
@@ skipping 255 matching lines @@
            const rtc::PacketOptions& options) override;
   int GetError() override { return error_; }
 
  private:
   int error_ = 0;
 };
 
 }  // namespace cricket
 
 #endif  // WEBRTC_P2P_BASE_PORT_H_