ip.h

使用VC++开发的很棒的上网拨号工具的程序的源码,可以选择PING,UDP,TCP/IP等等方式,功能比较全面.Using Visual C + + development of the great

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

#if !defined(AFX_ICMP_HEADER_H__D2802035_E3DD_4B94_899D_4F5EE61A8F40__INCLUDED_)
#define AFX_ICMP_HEADER_H__D2802035_E3DD_4B94_899D_4F5EE61A8F40__INCLUDED_

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

class ICMP_HEADER  
{
public:
		BYTE type;
		BYTE code;
		unsigned short sum;

		unsigned short identifier;
		unsigned short sequence;

public:
		ICMP_HEADER();
		virtual ~ICMP_HEADER();

};


class PPP_OPTION  
{
public:
		BYTE bType;
		BYTE bLength;
		BYTE bData[64];
		BOOL reject;

public:
		PPP_OPTION();
		virtual ~PPP_OPTION();

};


class IP_HEADER  
{
public:
		BYTE Version;	//be 4bits
		BYTE IHL;		//be 4bits
		BYTE Service;
		unsigned short TotalLength;

		unsigned short Identification;
		BYTE FLAG;
		unsigned short FlagFrag;
		
		BYTE TTL;
		BYTE protocol;
		BYTE HeaderSum;
		
		BYTE SrcIP[4];
		
		BYTE DesIP[4];
public:		
		IP_HEADER();
		virtual ~IP_HEADER();

};


class PPP_UDP  
{
public:
	unsigned short sourcePort, destinationPort;
	unsigned short UDPlength, UDPchecksum;
	BYTE *UDPdata;

public:
	PPP_UDP();
	virtual ~PPP_UDP();

};

#endif // !defined(AFX_ICMP_HEADER_H__D2802035_E3DD_4B94_899D_4F5EE61A8F40__INCLUDED_)