Do not delete a connection in the turn port with permission error or refresh error.

webrtc/p2p/base/turnport.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 227 matching lines @@
   TurnEntry* FindEntry(int channel_id) const;
   bool EntryExists(TurnEntry* e);
   void CreateOrRefreshEntry(const rtc::SocketAddress& address);
   void DestroyEntry(TurnEntry* entry);
   // Destroys the entry only if |timestamp| matches the destruction timestamp
   // in |entry|.
   void DestroyEntryIfNotCancelled(TurnEntry* entry, int64_t timestamp);
   void ScheduleEntryDestruction(TurnEntry* entry);
   void CancelEntryDestruction(TurnEntry* entry);
 
-  // Destroys the connection with remote address |address|. Returns true if
-  // a connection is found and destroyed.
-  bool DestroyConnection(const rtc::SocketAddress& address);
+  // Marks the connection with remote address |address| failed and
+  // pruned (a.k.a. write-timed-out). Returns true if a connection is found.
+  bool FailAndPruneConnection(const rtc::SocketAddress& address);
 
   ProtocolAddress server_address_;
   RelayCredentials credentials_;
   AttemptedServerSet attempted_server_addresses_;
 
   rtc::AsyncPacketSocket* socket_;
   SocketOptionsMap socket_options_;
   rtc::AsyncResolverInterface* resolver_;
   int error_;
 
@@ skipping 18 matching lines @@
   friend class TurnEntry;
   friend class TurnAllocateRequest;
   friend class TurnRefreshRequest;
   friend class TurnCreatePermissionRequest;
   friend class TurnChannelBindRequest;
 };
 
 }  // namespace cricket
 
 #endif  // WEBRTC_P2P_BASE_TURNPORT_H_