I want to write a program in c++ to read a pcap file and get the information of packets , like len,sourc ip, flags and etc. now I found the code like below and I think it will help me to get the information, but I have some questions: at the first I want to know which library should I add to my program and after that what is pcap_next,and how can I get the handle from a pcap file?
/* Grab a packet */
packet = pcap_next(handle, &header);
if (packet == NULL) { /* End of file */
break;
}
printf ("Got a packet with length of [%d] \n",
header.len);
You'll need to link your application with libpcap . To get a handle, you should use pcap_open_offline
. pcap_next
reads the next packet from the handle.
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.