ping.h

RouteTrace_ICMP

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

#if !defined(AFX_PING_H__A5CB9C43_D885_4814_A414_322BD2D6C5A8__INCLUDED_)
#define AFX_PING_H__A5CB9C43_D885_4814_A414_322BD2D6C5A8__INCLUDED_

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

#include "StdAfx.h"

#define  REPLY_ARRIVE			0
#define	 REPLY_ROUTESTATE		11013
#define	 REPLY_TIMEOUT			11010


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 Source;			// 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:
	CPing();
	virtual ~CPing();
	int Ping(CString strHost, int iSendDataTTL,CString *strRouterIP,int *iRTT);

private:
	// ICMP.DLL Export Function Pointers
	HANDLE (WINAPI *pIcmpCreateFile)(VOID);
	BOOL (WINAPI *pIcmpCloseHandle)(HANDLE);
	DWORD (WINAPI *pIcmpSendEcho)
		(HANDLE,DWORD,LPVOID,WORD,PIPINFO,LPVOID,DWORD,DWORD);
	HANDLE hndlIcmp;			// LoadLibrary() handle to ICMP.DLL
	BOOL bValid; // if it doesn't construct properly, it won't be valid


};

#endif // !defined(AFX_PING_H__A5CB9C43_D885_4814_A414_322BD2D6C5A8__INCLUDED_)