#define?HAVE_REMOTE
#include?
#include?
#include?
#include?
#pragma?comment（lib?“Packet“）
#pragma?comment（lib?“wpcap“）
#pragma?comment（lib?“WS2_32“）
typedef?struct?ip_header?{
	u_char?ver_ihl;?//?Version?（4?bits）?+?Internet?header?length（4?bits）?
		u_char?tos;?//?Type?of?service
		u_short?tlen;?//?Total?length
		u_short?identification;?//?Identification
		u_short?flags_fo;?//?Flags?（3?bits）?+?Fragment?offset（13?bits）?
		u_char?ttl;?//?Time?to?live
		u_char?proto;?//?Protocol
		u_short?crc;?//?Header?checksum
		u_char?saddr[4];?//?Source?address
		u_char?daddr[4];?//?Destination?address
		u_int?op_pad;?//?Option?+?Padding
}?ip_header;
typedef?struct?mac_header?{
	u_char?dest_addr[6];
	u_char?src_addr[6];
	u_char?type[2];
}?mac_header;
void?packet_handler（u_char?*param?const?struct?pcap_pkthdr
	*header?const?u_char?*pkt_data）;
int?main（）
{
	pcap_if_t?*alldevs;
	pcap_if_t?*d;
	int?inum;
	int?i?=?0;
	pcap_t?*adhandle;
	u_int?netmask;
	struct?bpf_program?fcode;
	char?errbuf[PCAP_ERRBUF_SIZE];
	/*?Retrieve?the?device?list?*/
	if?（pcap_findalldevs_ex（PCAP_SRC_IF_STRING?NULL?&alldevs
		errbuf）?==?-1）?{
		fprintf（stderr?“Error?in?pcap_findalldevs:?%s\n“
			errbuf）;
		exit（1）;
	}
	/*?Print?the?list?*/
	for?（d?=?alldevs;?d;?d?=?d->next）?{
		printf（“%d.?%s“?++i?d->name）;
		if?（d->description）
			printf（“?（%s）\n“?d->description）;
		else
			printf（“?（No?description?available）\n“）;
	}
	if?（i?==?0）?{
		printf（“\nNo?interfaces?found!?Make?sure?WinPcap?is?installed.\n“）;
			return?-1;
	}
	printf（“Enter?the?interface?number?（1-%d）:“?i）;
	scanf_s（“%d“?&inum）;
	if?（inum??i）?{
		printf（“\nInterface?number?out?of?range.\n“）;
		/*?Free?the?device?list?*/
		pcap_freealldevs（alldevs）;
		return?-1;
	}
	/*?Jump?to?the?selected?adapter?*/
	for?（d?=?alldevs?i?=?0;?inext?i++）;
	/*?Open?the?adapter?*/

	if?（（adhandle?=?pcap_open（d->name?65536?PCAP_OPENFLAG_PROMISCUOUS?1000?NULL?errbuf））?==?NULL）?{
		fprintf（stderr?“\nU