ip数据包的捕获与解析代码

#define IPV4_WERSION 4

#define IPV6_WERSION 6

#define ICMP_PACKET 1

#define IGMP_PACKET 2

#define TCP_PACKET 6

#define EGP_PACKET 8

#define UDP_packet 17

#define OSPF_PACKET 

class CPackCaptureDlg:public CDialog

{

public:

protected:

    typedef struct IP_HEAD                                                                //IP头部结构

            unsigned char Version;                                                        //版本（字节前四位）

            unsigned char HeadLen;                                                        //头度（字节后四位）

        unsigned char ServiceType;                                                        //服务类型

        unsigned short TotalLen;                                                          //总长度

        unsigned short Identifier;                                                        //标识符

            unsigned short Flags;                                                         //标志位（字前三位）

            unsigned short FragOffset;                                                    //片偏移（字后13位）

        unsigned char TimeToLive;                                                         //生存周期

        unsigned char Protocol;                                                           //协议

        unsigned short HeadChecksum;                                                      //头部校验和

        unsigned int SourceAddr;                                                          //源IP地址

        unsigned int DestinAddr;                                                          //目的IP地址

    typedef struct ICMP_HEAD                                                              //ICMP头部结构

        unsigned char Type;                                                               // 类型

        unsigned char Code;                                                               //代码

        unsigned short HeadChecksum;                                                      // 头部校验和

        unsigned short Identifior;                                                        //标识符

        unsigned short Sequence;                                                          //序号

};

//PackCaptureDlg.cpp :implementation file

#include "stdafx.h"

#include "PackCaptureDlg.h"

#include "PackCapture.h"

#include "winsock2.h"

#include "ws2tcpip.h"

#pragma comment(lib,"ws2_32")

#define IO_RCVALL _WSAIOW(IOC_VENDOR,1)

void CPackCaptureDlg::OnCapture()

{

  建立与Socket库绑定

  初始化失败!");

 创建原始Socket

  创建Socket失败!");

 设置Socket操作选项

  设置Socket选项失败！");

 获得本地主机名称

  获得主机名失败！");

 获得本地主机IP地址

  获得主机地址失败！");

 定义Socket地址结构

 绑定Socket与网卡

  绑定Socket失败！");

 设置Socket接受模式

  设置Socket接收器失败！");

 版本  总长度  标志位  片偏移  协议  源地址  目的地址\\r\\n";

  依次接受IP数据包

   接受IP数据包失败！");

  解除与Socket库绑定

}