// ICMP.h: interface for the CICMP class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_ICMP_H_INCLUDED_)
#define AFX_ICMP_H_INCLUDED_

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

#define DEF_PACKET 32
#define MAX_PACKET 1024
#define MIN_PACKET	8
//----------ICMP消息定義-------------
#define ICMP_ECHO		8		//回應(yīng)請求
#define ICMP_ECHOREPLY	0		//回應(yīng)應(yīng)答
#define ICMP_DESUNREACH 3		//目的不可達
#define ICMP_TTLOUT		11		//TTL超時

//IP及ICMP包頭部結(jié)構(gòu)
typedef struct ip_head{
	unsigned int	HeadLen:4;	//用32位字表示的報頭長度
	unsigned int	version:4;	//協(xié)議版本
	unsigned char	level;		//優(yōu)先級
	unsigned short	len;		//包長度
	unsigned short	ID;			//標(biāo)識
	unsigned short	mflag;		//其它標(biāo)記
	unsigned char	ttl;		//生命期
	unsigned char	prot;		//協(xié)議
	unsigned short	cksum;		//檢查和
	unsigned int	sourIP;	    //源IP地址
	unsigned int	destIP;		//目的IP地址
}IP_HEAD;

typedef struct icmp_head{
	unsigned char	type;		//類型
	unsigned char	code;		//編碼
	unsigned short	cksum;		//檢查和
	unsigned short	ID;			//標(biāo)識
	unsigned short	number;		//計數(shù)值
	unsigned int	time;		//時間
}ICMP_HEAD;

class CICMP  
{
public:	
	IP_HEAD *		m_pIp;
	ICMP_HEAD * 	m_pIcmp;
	SOCKET			winsock;
	CString         m_strInfo;
	CString         RouteState;

	sockaddr_in m_sockAddr;
	int routestate;
	char * routeaddr;

public:
	BOOL Initialize(void);					    	//初始化
	void Uninitialize(void);					    //反初始化
	USHORT CheckSum(USHORT *buffer, int size);	    //檢查和
	BOOL SendICMPPack(char * pAddr);				//發(fā)送報文
	BOOL SendICMPPack(sockaddr_in * pAddr);			//發(fā)送報文
	BOOL RecvICMPPack(void);						//接收報文
	int  SetTTL(int TTL);							//設(shè)置TTL

	CICMP();
	virtual ~CICMP();

};

#endif // !defined(AFX_ICMP_H_INCLUDED_)