// CPing.h: interface for the CPing class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_CPING_H__1B8CDD4B_095E_4770_A516_FB3855FFA4BF__INCLUDED_)
#define AFX_CPING_H__1B8CDD4B_095E_4770_A516_FB3855FFA4BF__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

//#ifndef CPING_H
//#define CPING_H



typedef struct tagIPINFO
{
	u_char Ttl;				// Time To Live
	u_char Tos;				// Type Of Service
	u_char IPFlags;			// IP flags
	u_char OptSize;			// Size of options data
	u_char FAR *Options;	// Options data buffer
}IPINFO;

typedef IPINFO* PIPINFO;

typedef struct tagICMPECHO
{
	u_long Address;			// Source address
	u_long Status;			// IP status
	u_long RTTime;			// Round trip time in milliseconds
	u_short DataSize;		// Reply data size
	u_short Reserved;		// Unknown
	void FAR *pData;		// Reply data buffer
	IPINFO	ipInfo;			// Reply options
}ICMPECHO;

typedef ICMPECHO* PICMPECHO;


class CPing : public CObject  
{
public:
	CPing();
	virtual ~CPing();
	BOOL Ping(char* strHost);
	BOOL bValid;
public:
	// ICMP.DLL Export Function Pointers
	HANDLE (WINAPI *pIcmpCreateFile)(VOID);
	BOOL (WINAPI *pIcmpCloseHandle)(HANDLE);
	DWORD (WINAPI *pIcmpSendEcho)(HANDLE,DWORD,LPVOID,WORD,LPVOID,LPVOID,DWORD,DWORD);
	HANDLE hndlIcmp;			// LoadLibrary() handle to ICMP.DLL
 // if it doesn't construct properly, it won't be valid

};

#endif // !defined(AFX_CPING_H__1B8CDD4B_095E_4770_A516_FB3855FFA4BF__INCLUDED_)