RE: [lwip-users] ping out?

[Robert Brown]

I have been monitoring this mailing list for some time and have found the
exchanges to be most interesting and helpful.  It seems to be a good time to
speak up.

I am using the raw API for an embedded system based on an ARM7 with a
RealTek 8019AS network interface.  We have a very light kernel to support an
event driven application architecture.  The raw API is a very nice fit for
our system.

Our application uses a number of TCP and UDP based protocols with lwIP
including SIP, RTP/RTCP, DHCP and a DNS client.  We are planning to add
support for SNMP, HTTP and TFTP.  I would welcome an implementation of
ICMP_ECHO to allow my system to ping out.  I am also interested in knowing
if anyone has done an SNMP agent for lwIP.  If there is interest, I may be
able to share some of our code with the lwIP community.

Regards,
Robert Brown


-----Original Message-----
From: address@hidden
[mailto:address@hidden Behalf
Of Zschocke, Florian
Sent: Friday, June 20, 2003 4:02 AM
To: 'Mailing list for lwIP users'
Subject: Re: [lwip-users] ping out?


Kieran Mansley wrote on Donnerstag, 19. Juni 2003 16:37:

> So, what do other people think?
>
> On one side we have SOCK_RAW:
> [...]
> On the other side we have the callback method done by Larry:
> [...]

This raises another question I was wondering about: who of the lwIP users is
using the raw API, who is using the lwIP API and who is using the BSD socket
API? Given the current state of the BSD API I would think that not many
people use lwIP with the BSD API. In our system we interface lwIP with the
BSD API.

We have a SOCK_RAW implementation, more or less modelled after the UDP
system in lwIP. It has been tested with a Ping application and will be used
to run OSPF over it. As always I am willing to try and make a patch for it.
This might take a bit time since we have also modified our lwIP for other
things (like IP_RECVIF support, but without recvmsg()) and it contains extra
code special to our system.

Florian.


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