protocol.h

一、实现 Sniffer 的基本功能。 Sniffer 是一种用于监测网络性能、使用情况的工具。 &#61548 能够指定需要侦听的网卡（考虑一台机器上多张网卡的情况） &#61548 能

// IP Packet Structure
//

/*
typedef IP * LPIP;
typedef IP UNALIGNED * ULPIP;
*/

//
// TCP Packet Structure
//
typedef struct _TCP
    {
    WORD SrcPort;
    WORD DstPort;
    DWORD SeqNum;
    DWORD AckNum;
    BYTE DataOff;
    BYTE Flags;
    WORD Window;
    WORD Chksum;
    WORD UrgPtr;
    } 	TCP;

typedef TCP *LPTCP;
typedef TCP UNALIGNED * ULPTCP;

// upper protocols
#define PROTOCOL_STRING_ICMP_TXT       "ICMP"
#define PROTOCOL_STRING_TCP_TXT        "TCP"
#define PROTOCOL_STRING_UDP_TXT        "UDP"
#define PROTOCOL_STRING_SPX_TXT        "SPX"
#define PROTOCOL_STRING_NCP_TXT        "NCP"

#define PROTOCOL_STRING_UNKNOW_TXT     "UNKNOW"


    
//*************************************************************************//
//* Header File: mstcpip.h
//*************************************************************************//
//  Copyright (c) Microsoft Corporation. All rights reserved.
#if _MSC_VER > 1000
#pragma once
#endif

/* Argument structure for SIO_KEEPALIVE_VALS */

struct tcp_keepalive {
    u_long  onoff;
    u_long  keepalivetime;
    u_long  keepaliveinterval;
};

// New WSAIoctl Options

#define SIO_RCVALL            _WSAIOW(IOC_VENDOR,1)
#define SIO_RCVALL_MCAST      _WSAIOW(IOC_VENDOR,2)
#define SIO_RCVALL_IGMPMCAST  _WSAIOW(IOC_VENDOR,3)
#define SIO_KEEPALIVE_VALS    _WSAIOW(IOC_VENDOR,4)
#define SIO_ABSORB_RTRALERT   _WSAIOW(IOC_VENDOR,5)
#define SIO_UCAST_IF          _WSAIOW(IOC_VENDOR,6)
#define SIO_LIMIT_BROADCASTS  _WSAIOW(IOC_VENDOR,7)
#define SIO_INDEX_BIND        _WSAIOW(IOC_VENDOR,8)
#define SIO_INDEX_MCASTIF     _WSAIOW(IOC_VENDOR,9)
#define SIO_INDEX_ADD_MCAST   _WSAIOW(IOC_VENDOR,10)
#define SIO_INDEX_DEL_MCAST   _WSAIOW(IOC_VENDOR,11)

// Values for use with SIO_RCVALL* options
#define RCVALL_OFF             0
#define RCVALL_ON              1
#define RCVALL_SOCKETLEVELONLY 2