From owner-freebsd-hackers  Mon Mar  8  8:57:36 1999
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Date: Mon, 8 Mar 1999 11:59:24 -0500 (EST)
From: Alfred Perlstein <bright@cygnus.rush.net>
To: CyberPsychotic <fygrave@tigerteam.net>
Cc: freebsd-hackers@FreeBSD.ORG
Subject: Re: SOCK_RAW on BSD
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On Mon, 8 Mar 1999, CyberPsychotic wrote:

> Hello people,
>  here I've been playing with RAW sockets on FreeBSD and got stumbled abit.
> Any ideas why code bellow does't seem to get anything passed by kernel.
> (I read manual pages and /sys/netinet/raw_ip.c but neither place mention any
> incompatibilies with other systems. This piece would work fine on Linux
> platforms).

If you are trying to capture packets you should look at 'bpf', if you
are trying to capture packets in a portable fashion, look at the library
'pcap'

-Alfred

man bpf
man pcap

> 
> 
> #include <stdio.h>
> #include <netdb.h>
> #include <sys/socket.h>
> #include <sys/types.h>
> #include <sys/socket.h>
> #include <netinet/in.h>
> 
> 
> 
> 
> void main(void) {
> 
> char buf[10000];
> int s,rdln;
>    s=socket(AF_INET, SOCK_RAW, IPPROTO_RAW);
>    while(1)
>    {
>       rdln=read(s, buf, 9999);
>         printf("got pack len: %i\n",rdln);
>    }
> }
> 
> 
> 
> 
> 
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