TcpClientSocketWin may detect EOF before the last asynchronous I/O

net/socket/tcp_client_socket_win.cc

 // Copyright (c) 2011 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.
 
 #include "net/socket/tcp_client_socket_win.h"
 
 #include <mstcpip.h>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
@@ skipping 571 matching lines @@
 
   previously_disconnected_ = true;
 }
 
 bool TCPClientSocketWin::IsConnected() const {
   DCHECK(CalledOnValidThread());
 
   if (socket_ == INVALID_SOCKET || waiting_connect())
     return false;
 
+  if (waiting_read_)
+    return true;
+
   // Check if connection is alive.
   char c;
   int rv = recv(socket_, &c, 1, MSG_PEEK);
   if (rv == 0)
     return false;
   if (rv == SOCKET_ERROR && WSAGetLastError() != WSAEWOULDBLOCK)
     return false;
 
   return true;
 }
 
 bool TCPClientSocketWin::IsConnectedAndIdle() const {
   DCHECK(CalledOnValidThread());
 
   if (socket_ == INVALID_SOCKET || waiting_connect())
     return false;
 
+  if (waiting_read_)
+    return true;
+
   // Check if connection is alive and we haven't received any data
   // unexpectedly.
   char c;
   int rv = recv(socket_, &c, 1, MSG_PEEK);
   if (rv >= 0)
     return false;
   if (WSAGetLastError() != WSAEWOULDBLOCK)
     return false;
 
   return true;
@@ skipping 279 matching lines @@
         use_history_.set_was_used_to_convey_data();
       net_log_.AddByteTransferEvent(NetLog::TYPE_SOCKET_BYTES_SENT, num_bytes,
                                     core_->write_buffer_.buf);
     }
   }
   core_->write_iobuffer_ = NULL;
   DoWriteCallback(rv);
 }
 
 }  // namespace net