I am already using dhcpd and it successfully allocates an IP address to
the Host PC connected over CDC/NCM - I can ping in both directions
successfully. I should therefore be able to use (something like) the
webserver example and server pages by using a URL such as
http://10.0.0.2 - I am trying this out now.
Being able to browse to "http://gadget"; or "http://gadget.local"; would
be nicer so I am looking an mDNS etc.
On 09/10/2024 12:58, spudaneco wrote:
There is this that I wrotw many years
ago:https://github.com/apache/nuttx-apps/tree/master/netutils/dhcpd
Sent 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.--
.-----------------.-------------------.----------------------.-----------------.| Michal Lyszczek | Embedded C, Linux | Company
Address | .-. opensource || +48 727 564 419 | Software Engineer | Akacjowa 10a; 55-330 | oo| supporter ||https://bofc.pl
`----.--------------: Brzezinka Sredzka PL | /`'\ & || GPG FF1EBFE7E3A974B1 | Bits of Code | NIP: 813 349 58 78 |(\_;/)
programer |`----------------------^--------------^----------------------^-----------------'
