第一个基于winpcap编程的程序

#include<pcap.h>int main(){pcap_if_t *alldevs;pcap_if_t *d;int i=0;char errbuf[PCAP_ERRBUF_SIZE];if(pcap_findalldevs(&alldevs,errbuf)==-1){fprintf(stderr,"Error in pcap_findalldevs: %s",errbuf);exit(1);}for(d=alldevs;d!=NULL;d=d->next){printf("%d (%s)",++i,d->name);if(d->description)printf(" (%s)\n",d->description);elseprintf(" (no description available)\n");}if(0!=i){printf("no interface found!Make sure winpcap is installed.\n");}pcap_freealldevs(alldevs);return 0;}