[PATCH V2 uhttpd] ubus: add new RESTful API

Andre Valentin avalentin at marcant.net
Wed Aug 5 03:11:55 EDT 2020


Am 04.08.20 um 18:40 schrieb Rafał Miłecki:
> On 04.08.2020 09:43, Andre Valentin wrote:
>> Am 03.08.20 um 07:49 schrieb Rafał Miłecki:
>>> On 31.07.2020 13:02, Andre Valentin wrote:
>>>> this is really great stuff. It would help me to get forward with my wifi controller.
>>>> Could it be possible to subsribe to multiple sources to limit the connections to ubus?
>>>> 2 SSIDs with 2.4 ad 5GHz would me 4 concurrent channels if I understand right.
>>> I'm happy someone finds it useful!
>>> If you mean hostapd.* objects, that's right. That would require you to
>>> use:
>>> /ubus/subscribe/hostapd.wlan0
>>> /ubus/subscribe/hostapd.wlan0-1
>>> /ubus/subscribe/hostapd.wlan1
>>> /ubus/subscribe/hostapd.wlan1-1
>>> For subscribing to multiple objects we would need to:
>>> 1. Stick to GET due to the way EventSource works
>>> 2. Pick some more generic URL
>>> 3. Adjust output format ("event" and "data" fields)
>>> So my guess would be something like:
>>> $ curl
>> Good idea!
>>> event: hostapd.wlan1 status
>>> data: {"count":5}
>>> event: hostapd.wlan0-1 status
>>> data: {"count":5}
>>> event: hostapd.wlan1 status
>>> data: {"count":7}
>>> Regarding parsing events stream, event names with spaces seem to be OK:
>>> https://html.spec.whatwg.org/multipage/server-sent-events.html#parsing-an-event-stream
>>> field value can use any scalar value other than line break char.
>> Why do you need the status there, is it part of the standard?
> That was meant to separate object name from notification name.
OK, I understand.
>>> We should use some special character as separator of object name and
>>> notification name. It must be something that ubus doesn't use in any of
>>> them. Should space be OK? Or should we use some more fancy char? I
>>> quickly tested space and it seems to work well in Firefox and Chromium.
>> Oh, I'm nut sure. But I think space is fine.
>> Did you use a special uhttpd version. I couldn't apply your patch to the uhttpd in openwrt master.
> There are few more uhttpd pending patches that I sent, see:
> https://patchwork.ozlabs.org/project/openwrt/list/?series=&submitter=5824&state=*&q=uhttpd&archive=&delegate=

Okay, will give it a try again at the weekend.

Kind regards,


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