[Ovmsdev] 3.0.991

Mark Webb-Johnson mark at webb-johnson.net
Wed Mar 7 09:04:52 HKT 2018

From my understanding, Zeroconf / mDNS rely on a pre-existing IP network. They don’t address the wifi side of things at all.

There are some approaches to dealing with simplifying wifi configuration (involving flashing lights, bluetooth adverts, etc), but they are all proprietary. Espressif has one called ESP-TOUCH (aka Smart Config):

https://www.espressif.com/en/products/software/esp-touch/overview <https://www.espressif.com/en/products/software/esp-touch/overview>

Regards, Mark.

> On 7 Mar 2018, at 7:24 AM, Greg D. <gregd2350 at gmail.com> wrote:
> Hi Michael,
> I trying to figure out how Zeroconf is supposed to work, given the
> networking services that the module currently supports.  Perhaps I don't
> understand mDNS well enough, but don't we need some means to broadcast
> our presence, separate from the network?
> I was able to run the ZeroConf Browser on my Android phone (Google
> Pixel2, latest code), and it did discover the module.  But that was only
> when the module and phone were both connected by wifi to the home
> network.  When it was running in AP mode, with the phone connected to
> the home network, there is no way for the phone to see the mDNS service
> announcement packets. 
> I did a wireless trace of the wifi beacons, thinking it might be
> broadcast in there, but didn't find anything service-oriented other than
> the usual stuff.  The only wifi adapter that I could get to cooperate
> with me today was a really old one (11b-only), so perhaps there's
> something at an 11g/n level that I can't see? 
> I'm thinking we need some out-of-band channel for the broadcasts, for
> example, Bluetooth.  Isn't there a service there for this purpose?  How
> is this supposed to work? 
> Greg
> Michael Balzer wrote:
>> Zeroconf / mDNS allows to address the module using the name "<moduleid>.local", but is not supported on all systems. It should work on iOS, but I can't test
>> that. It doesn't work on Android 7, so is not usable as a general solution.
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