Bind a socket to a network if the network handle is set.

webrtc/base/network.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 337 matching lines @@
 
   // When we enumerate networks and find a previously-seen network is missing,
   // we do not remove it (because it may be used elsewhere). Instead, we mark
   // it inactive, so that we can detect network changes properly.
   bool active() const { return active_; }
   void set_active(bool active) { active_ = active; }
 
   // Debugging description of this network
   std::string ToString() const;
 
+  NetworkHandle handle() const { return 0; }
+  bool IsHandleValid() const { return false; }

[pthatcher1, 2016/01/06 21:58:46]

Can you leave a comment about what these are how they should be used?

Also, would it make sense to return an Optional<NetworkHandle>?  It seems weird
to have two methods for basically the same thing.


Actually, the more I think about it, the more I think we can avoid even having
this.  See more comments later.

[honghaiz3, 2016/01/12 20:36:42]

Acknowledged.

+
  private:
   const DefaultLocalAddressProvider* default_local_address_provider_ = nullptr;
   std::string name_;
   std::string description_;
   IPAddress prefix_;
   int prefix_length_;
   std::string key_;
   std::vector<InterfaceAddress> ips_;
   int scope_id_;
   bool ignored_;
   AdapterType type_;
   int preference_;
   bool active_ = true;
 
   friend class NetworkManager;
 };
 
 }  // namespace rtc
 
 #endif  // WEBRTC_BASE_NETWORK_H_