Scratch that last question. I've read a lot since yesterday on ICMP
and that question really didn't make any sense, now that I understand
a little more about it.
But, this little code snippet I found in an online tutorial isn't
catching any ICMP packets:
int main() {
char buffer[8192];
int fd = socket (PF_INET, SOCK_RAW, IPPROTO_ICMP);
printf("\nHere we go...\n");
while (read (fd, buffer, 8192) > 0) {
printf("Caught ICMP Packet\n");
}
return 0;
}
It compiles and runs fine, but never catches anything. It just sits
on the read() line, waiting indefinitely.
I tried unplugging/replugging routers to force them to send ICMP
router advertisements, but still nothing shows up.
Any ideas?
Thanks.
- Chase
PS: Anyone know of a higher volume list where I could ask these
questions? I'm practically the only poster for almost two straight
days.
