When i run a simple packet sniffer coded in C on my Mac OS X, i got no output at all, this is a strange thing! can someone help me to understand what going on.
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
int main(void) {
int i, recv_length, sockfd;
u_char buffer[9000];
if ((sockfd = socket(PF_INET, SOCK_RAW, IPPROTO_TCP)) == -1) {
printf("Socket failed!!
");
return -1;
}
for(i=0; i < 3; i++) {
recv_length = recv(sockfd, buffer, 8000, 0);
printf("Got some bytes : %d
", recv_length);
}
return 0;
}
I compile it and run it on my box and nothing is going:
MacOsxBox:Desktop evariste$sudo ./simpleSniffer
Thanks for your help.
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