//?ping.cpp?:?Defines?the?entry?point?for?the?console?application.
//

#include?“stdafx.h“
#include
#include
#include
#include
#include
#pragma?comment（lib“WS2_32“）

typedef?struct?IPHeader?{
??UCHAR??iph_verlen;??//?Version?and?length?
??UCHAR??iph_tos;??//?Type?of?service?
??USHORT??iph_length;??//?Total?datagram?length?
??USHORT??iph_id;??//?Identification?
??USHORT??iph_offset;??//?Flags?fragment?offset?
??UCHAR??iph_ttl;??//?Time?to?live?
??UCHAR??iph_protocol;??//?Protocol?
??USHORT??iph_xsum;??//?Header?checksum?
??ULONG??iph_src;??//?Source?address?
??ULONG??iph_dest;??//?Destination?address?
}?IPHeader;?

USHORT?checksum（USHORT?*buffint?size）
{
	unsigned?long?cksum?=?0;
	//將數據以字單位累加到cksum?中
	while（size?>?1）
	{
		cksum?+=?*buff++;
		size?-=?sizeof（USHORT）;
	}
	//如果為奇數，將最后一個字節擴展為雙字，再累加到cksum中
	if（size）
	{
		cksum?+=?*（UCHAR*）?buff;
	}
	//將cksum的高16位和低16位相加，去反后得到校驗和
????cksum?=?（cksum?>>?16）+（cksum?&?0xffff）;
	cksum?+=?（cksum?>>?16）;
	return?（USHORT）（~cksum）;
}

//定義ICMP頭的數據結構
typedef?struct?icmp_hdr
{
	unsigned?char?icmp_type;??//消息類型
	unsigned?char?inmp_code;??//代碼
	unsigned?short?icmp_checksum;?//校驗和
	
	//回顯頭
	unsigned?short?icmp_id;??//標志請求的ID號
	unsigned?short?icmp_sequence;?//序列號
	unsigned?long?icmp_timestamp;?//時間戳
}?ICMP_HDR*PICMP_HDR;



int?main（）
{
	printf（“please?input?IP?address:\n“）;
	char?szDestIp[20];
????scanf（“%s“szDestIp）;
	
//	SOCKET?sRaw?=?::socket（PF_INETSOCK_RAWIPPROTO_IP）;
???
	WSADATA?wsaData;
	if（WSAStartup（MAKEWORD（22）&wsaData）!=0）
	{
		printf（“啟動失敗!\n“）;
		return?0;
	}
//創建原始套接字
	SOCKET?sRaw?=?WSASocket（AF_INET?SOCK_RAW?IPPROTO_ICMP?NULL?0WSA_FLAG_OVERLAPPED）;
//設置接收超時
	int?timeout=2000;	?
????if（setsockopt（sRaw?SOL_SOCKET?SO_RCVTIMEO?（char*）&timeout?sizeof（timeout））==?SOCKET_ERROR）?
????{
????????printf（“Setting?Socket?Wrong“）;
????????return?0;
????}
	//設置目的地址
	SOCKADDR_IN?dest;
	dest.sin_family?=?AF_INET;
	dest.sin_port?=?htons（0）;
	if（INADDR_NONE==（dest.sin_addr.S_un.S_addr?=?inet_addr（szDestIp）））
	{
		printf（“ip?address?wrong“）;
	}

	//創建一個?ICMP?封包
	char?buff[sizeof（ICMP_HDR）+32];
	ICMP_HDR*pIcmp?=?（ICMP_HDR*）buff;
	pIcmp->icmp_type?=?8;
	pIcmp->inmp_code?=?0;
	pIcmp->icmp_id?=?（USHORT）::GetCurrentProcessId（）;
	pIcmp->icmp_checksum?=?0;
	pIcmp->icmp_sequence?=?0;

	memset（&buff[sizeof（ICMP_HDR）]‘E‘32）;?//填充數據部分，可以任意??void?*memset（?void?*dest?int?c?size_t?count?）;Sets?buffers?to?a?specified?character.

	//開始發送和接收ICMP封包
????USHORT?nSeq?=?0;
	char?recvBuf[1024];
	SOCKADDR_IN?from;?//一個結構體
????int?nLen?=?sizeof（from）;
	
	while?（TRUE）
	{
		static?int?nCount?=?0;
		int?nRet;
		nCount++;
		if（nCount?==?4）?break;
		pIcmp->icmp_checksum?=?0;
		pIcmp->icmp_timestamp?=?::GetTickCount（）;
		pIcmp->icmp_sequence??=?nSeq++;
		pIcmp->icmp_checksum?=?checksum（（USHORT*）buffsizeof（ICMP_HDR）+32）;
		nRet?=?::sendto?（sRawbuffsizeof（ICMP_HD

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????731??2008-12-08?16:43??ping\ping.h

?????文件????????667??2008-12-26?18:24??ping\StdAfx.h

?????文件???????1196??2008-12-26?18:24??ping\ReadMe.txt

?????文件???????4512??2008-12-26?18:24??ping\ping.dsp

?????文件????????533??2008-12-26?18:24??ping\ping.dsw

?????文件??????58368??2009-01-02?17:20??ping\ping.ncb

?????文件???????1308??2008-12-29?13:32??ping\ping.plg

?????文件????????311??2008-12-26?18:40??ping\StdAfx.cpp

?????文件???????3676??2008-12-29?13:32??ping\ping.cpp

?????文件??????53760??2009-01-02?17:20??ping\ping.opt

?????文件?????164864??2009-01-02?16:38??ping\Debug\vc60.idb

?????文件?????187100??2008-12-26?18:40??ping\Debug\ping.pch

?????文件?????258048??2008-12-29?13:32??ping\Debug\vc60.pdb

?????文件?????167984??2008-12-29?13:32??ping\Debug\ping.exe

?????文件?????443392??2008-12-29?13:32??ping\Debug\ping.pdb

?????文件??????11439??2008-12-26?18:40??ping\Debug\StdAfx.obj

?????文件?????198044??2008-12-29?13:32??ping\Debug\ping.ilk

?????文件??????50290??2008-12-29?13:32??ping\Debug\ping.obj

?????目錄??????????0??2009-01-03?15:37??ping\Debug

?????目錄??????????0??2009-01-03?15:37??ping

-----------?---------??----------?-----??----

??????????????1606223????????????????????20