On 12/18/06, Kieran Mansley <[EMAIL PROTECTED]> wrote:
On Mon, 2006-12-18 at 10:54 +0100, [EMAIL PROTECTED] wrote:
> Hi,
>
> I have set up an UDP-server using the raw API
>
> upcb= udp_new();
> udp_recv( upcb, callback_recv, get_nic_netif() );
> udp_bind( upcb, IP_ADDR_ANY, 1234 );
>
> In my callback_recv function I can see the IP address of the UDP-client
> so I can reply to it.
>
> But........ I would like to detect if the client sent the incoming UDP
> packet using unicast or broadcast (so I can respond with a
> corresponding unicats/broacast packet).
>
> Is this possible?
Someone may correct me, as I'm not sure about this, but
unicast/broadcast is a rather Ethernet specific concept, and so I'd be
surprised if it was visible at the higher layers as these have to
interoperate on many different physical networks.
Kieran
Maybe I was a bit careless with my vocabulary if unicast/broadcast is
only related to the ethernet layer.
It's the destination adress at the IP-layer (not ethernet layer) I'm
interested in.
/Beach/
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