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62 lines
1.2 KiB
62 lines
1.2 KiB
#pragma once
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#include "winsock2.h"
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#include <stllock.h>
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class CIpAddressMonitor
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/*
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This is a class to monitor the number of active networks on the local machine.
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It does so by using the Winsock 2.0 SIO_ADDRESS_LIST_CHANGE ioctl. Currently it
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only monitors IP addresses, but it could monitor other networks that conform to
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the Winsock model.
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*/
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{
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public:
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CIpAddressMonitor();
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~CIpAddressMonitor();
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typedef void (CALLBACK * LISTEN_CALLBACK_FN)( PVOID arg );
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HRESULT
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Listen(
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LISTEN_CALLBACK_FN fn,
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PVOID arg
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);
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void CancelListen();
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bool IsListening();
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long GetAddressCount();
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protected:
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CCritSec m_Mutex;
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long m_AddressCount;
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SOCKET m_ListenSocket;
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OVERLAPPED m_Overlapped;
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LISTEN_CALLBACK_FN m_CallbackFn;
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PVOID m_CallbackArg;
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//--------------------------------------------------------------------
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HRESULT CreateListenSocket();
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HRESULT UpdateAddressCount();
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static void CALLBACK
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ListenCompletionRoutine(
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IN DWORD dwError,
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IN DWORD cbTransferred,
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IN LPWSAOVERLAPPED lpOverlapped,
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IN DWORD dwFlags
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);
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};
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