Re: [lwip-users] Callback when get any IP or ICMP packet?

[narke]

On 8 October 2011 16:51, Simon Goldschmidt <address@hidden> wrote:
>  narke <address@hidden> wrote:
>
>> Could you please shortly hint me how to do it using raw pcb?  Many thanks!
>
> RAW pcbs are used to send/receive IP packets and implement other transport 
> protocols on it. For example, the ping example app in contrib uses a raw pcb 
> or socket to send ICMP requests and receive responses. You can find out more 
> about that by examining the ping source code.
>>
>>>
>
> On RX, when using a raw pcb, you can tell lwIP wether you handled the packet 
> (called "eat" it) or pass it on to the rest of the stack. When using a raw 
> socket, you always receive a copy of the packet.
>
> Simon


Simon,

For the technical you mentioned, would you please show me a code
illustration?  I just need to 'listen' on any IP packet coming to my
interface but without changing it.  Hacking ip_input() might be a
solution (as Kieran probably pointed out), but I am looking for a
better way.

Thanks in advance.


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narke
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