Reimplements net::AddressList without struct addrinfo.

net/socket/tcp_client_socket_win.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_SOCKET_TCP_CLIENT_SOCKET_WIN_H_
 #define NET_SOCKET_TCP_CLIENT_SOCKET_WIN_H_
 #pragma once
 
 #include <winsock2.h>
 
@@ skipping 66 matching lines @@
   };
 
   class Core;
 
   // State machine used by Connect().
   int DoConnectLoop(int result);
   int DoConnect();
   int DoConnectComplete(int result);
 
   // Helper used by Disconnect(), which disconnects minus the logging and
-  // resetting of current_ai_.
+  // resetting of current_address_index_.
   void DoDisconnect();
 
   // Returns true if a Connect() is in progress.
   bool waiting_connect() const {
     return next_connect_state_ != CONNECT_STATE_NONE;
   }
 
   // Called after Connect() has completed with |net_error|.
   void LogConnectCompletion(int net_error);
 
   void DoReadCallback(int rv);
   void DoWriteCallback(int rv);
   void DidCompleteConnect();
   void DidCompleteRead();
   void DidCompleteWrite();
 
   SOCKET socket_;
 
   // Local IP address and port we are bound to. Set to NULL if Bind()
   // was't called (in that cases OS chooses address/port).
   scoped_ptr<IPEndPoint> bind_address_;
 
   // Stores bound socket between Bind() and Connect() calls.
   SOCKET bound_socket_;
 
   // The list of addresses we should try in order to establish a connection.
   AddressList addresses_;
 
-  // Where we are in above list, or NULL if all addrinfos have been tried.
-  const struct addrinfo* current_ai_;
+  // Where we are in above list. Set to -1 if uninitialized.
+  int current_address_index_;
 
   // The various states that the socket could be in.
   bool waiting_read_;
   bool waiting_write_;
 
   // The core of the socket that can live longer than the socket itself. We pass
   // resources to the Windows async IO functions and we have to make sure that
   // they are not destroyed while the OS still references them.
   scoped_refptr<Core> core_;
 
@@ skipping 21 matching lines @@
   base::TimeTicks connect_start_time_;
   base::TimeDelta connect_time_micros_;
   int64 num_bytes_read_;
 
   DISALLOW_COPY_AND_ASSIGN(TCPClientSocketWin);
 };
 
 }  // namespace net
 
 #endif  // NET_SOCKET_TCP_CLIENT_SOCKET_WIN_H_