[ILUG] simple socket programming

[Sean Coughlan]

hey there,

i'm doing some simpe socket programming,
in one of my programs i've a struct defined as below

        struct HEADER {
                struct ip ip;
                struct tcphdr tcp;
                char payload[1024];
        };

i open a raw socket and i perform 'process_packet' on all connections to
it

        int raw;
        struct HEADER packet;
        raw=socket(AF_INET, SOCK_RAW, 6);
        while (0==0) {
            size=recv(raw, &packet, sizeof(packet), 0);
            process_packet(packet, size);        // do stuff on received
packet
        }

the only packets it seems to be collecting are ones that are being sent
to the local host

i'm just wondering could i modify this code to pick up all
packets being sent from the machine, sent to the machine
and all packets that the interface might pick up in promisc
mode?

thanks alot,
Sean Coughlan
sean at excentric.com