www.pudn.com > PortScan_sjtu.rar > ICMP_ECHO.h

#ifndef ICMP_ECHO_H 
#define ICMP_ECHO_H 
 
class ICMP_ECHO 
{ 
	typedef struct icmp_hdr 
	{ 
		unsigned char icmp_type; 
		unsigned char icmp_code; 
		unsigned short icmp_checksum; 
		unsigned short icmp_id; 
		unsigned short icmp_sequence; 
		unsigned long icmp_timestamp; 
	} ICMP_HDR, *PICMP_HDR, FAR *LPICMP_HDR; 
 
	typedef struct ip_hdr 
	{ 
		unsigned char  ip_verlen;        // 4-bit IPv4 version 
		// 4-bit header length (in 32-bit words) 
		unsigned char  ip_tos;           // IP type of service 
		unsigned short ip_totallength;   // Total length 
		unsigned short ip_id;            // Unique identifier  
		unsigned short ip_offset;        // Fragment offset field 
		unsigned char  ip_ttl;           // Time to live 
		unsigned char  ip_protocol;      // Protocol(TCP,UDP etc) 
		unsigned short ip_checksum;      // IP checksum 
		unsigned long   ip_srcaddr;       // Source address 
		unsigned long   ip_destaddr;      // Source address 
	} IPV4_HDR, *PIPV4_HDR, FAR * LPIPV4_HDR; 
 
public: 
	int Ping(char*,unsigned int,char*); 
 
private: 
	ICMP_HDR *icmp; 
	USHORT checksum(USHORT *buffer, int size);  
 
	void Init_Header(char*); 
     
}; 
 
#endif