編程實現arp協議c語言,ARP協議c語言實現源代碼

2023年12月11日發(作者：成立公司的流程和要求)

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編程實現arp協議c語言,ARP協議c語言實現源代碼.doc

ARP協議的c語言實現源代碼【轉載】 收藏

什么是ARP協議

英文原義：Address Resolution Protocol

中文釋義：(RFC-826)地址解析協議

#include

#include

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#include

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#include

#include

#include

#include

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#include

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#include

#include

#include

#include

#include

#include

#include

#include

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#include

#include

#define src_addr "192.168.0.239"

#define device "eth0"

#define fill_buf "aaaaaaaaaaaa"

int socket_id;

char *target = src_addr;

int nd_count = 0;int recv_count = 0;struct in_addr src, dst;struct sockaddr_ll me, he;struct timeval nd_time, recv_time;struct in_addr get_src_ip(char * devices){struct sockaddr_in saddr;int sock_id = socket(AF_INET, SOCK_DGRAM, 0);if (sock_id < 0) {perror("socket");exit(2);}if (devices) {if (tsockopt(sock_id, SOL_SOCKET, SO_BINDTODEVICE, device, strlen(device)+1) == -1)perror("WARNING: interface is ignored");}int alen = sizeof(saddr);memt(&saddr, 0, sizeof(saddr));_port = htons(0x1000);_family = AF_INET;if (connect(sock_id, (struct sockaddr*)&saddr, sizeof(saddr)) == -1) {perror("connect");exit(2);}if (getsockname(sock_id, (struct sockaddr*)&saddr, &alen) == -1) {perror("getsockname");exit(2);}clo(sock_id);return _addr;}int check_device(char* if_dev, int ss){int ifindex;struct ifreq ifr;memt(&ifr, 0, sizeof(ifr));strncpy(_name, if_dev, IFNAMSIZ-1);if (ioctl(ss, SIOCGIFINDEX, &ifr) < 0) {fprintf(stderr, "arping: unknown iface %sn", if_dev);exit(2);}ifindex = _ifindex;if (ioctl(ss, SIOCGIFFLAGS, (char*)&ifr)) {perror("ioctl(SIOCGIFFLAGS)");exit(2);}if (!(_flags&IFF_UP)) {printf("Interfac

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