Stop a session when a new connection becomes writable.

webrtc/p2p/base/p2ptransportchannel.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 138 matching lines @@
 
   int receiving_timeout() const { return receiving_timeout_; }
   int check_receiving_delay() const { return check_receiving_delay_; }
 
   // Helper method used only in unittest.
   rtc::DiffServCodePoint DefaultDscpValue() const;
 
   // Public for unit tests.
   Connection* FindNextPingableConnection();
 
- private:
-  rtc::Thread* thread() { return worker_thread_; }
+  // Helper method used only in unit tests.
   PortAllocatorSession* allocator_session() {
     return allocator_sessions_.back();
   }
 
+ private:
+  rtc::Thread* thread() { return worker_thread_; }
+
+
   // A transport channel is weak if the current best connection is either
   // not receiving or not writable, or if there is no best connection at all.
   bool weak() const;
   void UpdateConnectionStates();
   void RequestSort();
   void SortConnections();
   void SwitchBestConnectionTo(Connection* conn);
   void UpdateChannelState();
   void HandleWritable();
   void HandleNotWritable();
   void HandleAllTimedOut();
+  void MaybeStopSessions();
 
   Connection* GetBestConnectionOnNetwork(rtc::Network* network) const;
   bool CreateConnections(const Candidate& remote_candidate,
                          PortInterface* origin_port);
   bool CreateConnection(PortInterface* port,
                         const Candidate& remote_candidate,
                         PortInterface* origin_port);
   bool FindConnection(cricket::Connection* connection) const;
 
   uint32_t GetRemoteCandidateGeneration(const Candidate& candidate);
@@ skipping 41 matching lines @@
   int error_;
   std::vector<PortAllocatorSession*> allocator_sessions_;
   std::vector<PortInterface *> ports_;
   std::vector<Connection *> connections_;
   Connection* best_connection_;
   // Connection selected by the controlling agent. This should be used only
   // at controlled side when protocol type is RFC5245.
   Connection* pending_best_connection_;
   std::vector<RemoteCandidate> remote_candidates_;
   bool sort_dirty_;  // indicates whether another sort is needed right now
-  bool was_writable_;
   bool had_connection_ = false;  // if connections_ has ever been nonempty
   typedef std::map<rtc::Socket::Option, int> OptionMap;
   OptionMap options_;
   std::string ice_ufrag_;
   std::string ice_pwd_;
   std::string remote_ice_ufrag_;
   std::string remote_ice_pwd_;
   IceMode remote_ice_mode_;
   IceRole ice_role_;
   uint64_t tiebreaker_;
   uint32_t remote_candidate_generation_;
   IceGatheringState gathering_state_;
 
   int check_receiving_delay_;
   int receiving_timeout_;
   uint32_t last_ping_sent_ms_ = 0;
   bool gather_continually_ = false;
+  // Whether a new session has been started to get ports and it is not
+  // stopped yet.
+  bool is_getting_ports_  = false;
 
   RTC_DISALLOW_COPY_AND_ASSIGN(P2PTransportChannel);
 };
 
 }  // namespace cricket
 
 #endif  // WEBRTC_P2P_BASE_P2PTRANSPORTCHANNEL_H_