//?ping命令代碼實現.cpp?:?Defines?the?entry?point?for?the?console?application.
//

#include?“stdafx.h“
#include?
#include?
#include?
#include?
#include?“winsock.h“?
#pragma?comment（lib“Ws2_32.lib“）
#pragma?comment（lib?“wsock32.lib“）
#define?SEND_SIZE?32??//字節數
#define?PACKET_SIZE?4096?//包的長度
#define?ICMP_ECHO?8???????????
#define?ICMP_ECHOREPLY?0?
#define?SERVER_DLL_REEOR?1//DLL錯誤
#define?SERVER_EXIT_OK???1//客戶端退出
#define?SERVER_API_ERROR??2
//定義ICMP報文首部格式
typedef?struct?ICMP_Header
{
	u_char?Type??;//類型
	u_char?Code?;?//代碼
	u_short?Checksum;//首部校驗和
	u_short?ID???;?//標識
	u_short?Seq;???//序列號
	unsigned?long?Data;???//?時間戳
}ICMPHDR?*PICMPHDR;
//定義ip報文頭
typedef?struct?IP_Header
{
	u_char?ip_hlen:4;??//首部長度
	u_char?ip_versio