Re: [lwip-users] Is there and 'ping' function?

[Steven Woody]

On 19 April 2011 16:23, Kieran Mansley <address@hidden> wrote:
> On Tue, 2011-04-19 at 13:47 +0800, Steven Woody wrote:
>> But I still can see, by check out the
>> web links, in simhost.c, the usage of 'ping' is implemented as an
>> application layer sample.  So, the high level 'ping' service is anyhow
>> not in the lwIP.   Am I right in this?
>
> lwIP is the network protocol stack, ping is an application that uses the
> stack.  lwIP supports ICMP (which the ping application uses) but it
> doesn't include the ping application internally, in the same way that it
> doesn't include a web server.
>
> There are some example applications in the contrib module, in particular
> for you: contrib/apps/ping/  This is likely to be a lot more useful than
> the unix-specific demonstration app simhost
>
> For the ICMP implementation see lwip/src/core/ipv4/icmp.c  This is
> mostly geared towards sending replies to received ICMP frames.
>
> Kieran
>

Thanks, that's a way clear.

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