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// Copyright (c) 2010 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/base/network_change_notifier_win.h"
#include <iphlpapi.h>
#include <winsock2.h>
#pragma comment(lib, "iphlpapi.lib")
namespace net {
NetworkChangeNotifierWin::NetworkChangeNotifierWin() {
memset(&addr_overlapped_, 0, sizeof addr_overlapped_);
addr_overlapped_.hEvent = WSACreateEvent();
WatchForAddressChange();
}
NetworkChangeNotifierWin::~NetworkChangeNotifierWin() {
CancelIPChangeNotify(&addr_overlapped_);
addr_watcher_.StopWatching();
WSACloseEvent(addr_overlapped_.hEvent);
}
void NetworkChangeNotifierWin::OnObjectSignaled(HANDLE object) {
NotifyObserversOfIPAddressChange();
// Start watching for the next address change.
WatchForAddressChange();
}
void NetworkChangeNotifierWin::WatchForAddressChange() {
HANDLE handle = NULL;
DWORD ret = NotifyAddrChange(&handle, &addr_overlapped_);
CHECK(ret == ERROR_IO_PENDING);
addr_watcher_.StartWatching(addr_overlapped_.hEvent, this);
}
} // namespace net
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