Re: [Caml-list] RAW-sockets

[Oliver Bandel <oliver@first.in-berlin.de>]

On Thu, May 18, 2006 at 10:36:25AM -0600, William D. Neumann wrote:
> On Thu, 18 May 2006, Oliver Bandel wrote:
> 
> >>how to use Eaw sockets from OCaml?
> >>
> >>As in raw sockets I have to create the IP-header by myself
> >>I'm wondering how.
> >>
> >>IP normally uses 32Bit words, and the parts of it are not
> >>necessarily byte or nibble oriented.
> >>So I have to be able to set some bits directly.
> >>But the OCaml int's is not complete 32 Bits.
> >[...]
> >
> >I have not found in the Unix-module an option for the sockets,
> >that is eaquivalent to the IP_HDRINCL option, as described
> >by Stevens in the Networking Programming Vol. I.
> >
> >Isn't it possible in OCaml to create own IP-headers?
> >So, do I have to go back to C to e.g. write ICMP packets?
> 
> No.  Just create a string in OCaml and use that.  Here's a (possibly 
> awful) hunk of code I wrote for creating ICMP packets.  Take a look at it 
> and see how I did things.
[...]

OK, thanks for that impression...
...but soooo much code for this?

Seems that it's easier to do it in C. :(


I will look at your code in more detail later,
but at first look, it was a little shock. :(

Maybe you have implemented more functionality than I need
and so what I was looking for is some lines of code only.
But nevertheless it's god to have his, so I can reason
about how to do some ICMP-based stuff.


Best Regards,
       Oliver