There is this that I wrotw many years ago:
https://github.com/apache/nuttx-apps/tree/master/netutils/dhcpdSent from my
Galaxy
-------- Original message --------From: michal.lyszc...@bofc.pl Date: 10/8/24
11:01 PM (GMT-06:00) To: dev@nuttx.apache.org Subject: Re: NuttX "gadget":
resolve its host name via CDC/NCM connection On 2024-10-08 20:56:00, Tim
Hardisty wrote:> My intention is to implement a simple web server on the device
so as to be> able to plug in to it via usb, go to a browser, and go to
“http://gadget”> rather than “http://10.0.0.10” (for example).> > This is
DNS…but my embedded networking knowledge is limited and I am not> sure what
NuttX tools/daemons/examples/whatever I need to use for this? > > I don’t think
a hosts file on the gadget is right, as the PC can’t use> that to match
hostname to IP (and editing a hosts file on the PC is not an> option in this
case). So probably the gadget needs to also be a DNS> server? But I can’t find
much information on how to use the NuttX> implementation of this.> > Have I got
that right or am I missing something?The thing you want to do, while possible
is not really feasable. Yes, youmust host DNS server on nuttx. I don't think
there is anything ready to go,embedded devices usually do not act as a DNS.
Then you would have to pushDNS server to the host via DHCP. Problem is, that
now you will overwrite DNSaddress on your host pc and you won't be able to
resolve anything else otherthan what your nuttx 'gadget' device can. You could
forward requests toexternal DNS, but that again requires nuttx to have
internet. So DHCP/DNS onnuttx is not really good option.Having it reversed
(DHCP/DNS on host pc) could probably solve the problem withsome upnp magic. But
that will require user to have upnp or some kind ofzeroconf enabled on host pc
as well.To my knowledge it's not possible to do what you want in portable
manner.You can try some hacks, but the will not work for anyone - hence I would
notrecommend them.I have never ever met a embedded device that would do what
you describe.It's always via IP address. So do what others do, and allow access
viaIP address only. That's the only portable way that I know of.--
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