[riot-users] gcoap and DTLS

Ken Bannister kb2ma at runbox.com
Tue Jan 30 16:18:41 CET 2018

Thanks, Joakim. I have created a similar example, although it's not in 
the repository examples collection. For anyone interested, check out 
the, "gcoap presentation" thread on the ML from last October [1]. It 
references the data collection application as well as a presentation and 
video I created about it.


[1] https://lists.riot-os.org/pipermail/users/2017-October/thread.html

On 01/30/2018 02:52 PM, Joakim NohlgÄrd wrote:
> I think an example with an observable, periodic resource would be a 
> useful addition to the example collection. The periodic resource could 
> be simply sending the xtimer_now value or adc_read or similar 
> periodically every 5 seconds or something to show how to set up 
> periodic notifications in gcoap.
> Without looking at the code I guess it would be driven by xtimer to 
> provide events to the gcoap observable resource event loop.
> Best regards, Joakim
> On Jan 30, 2018 3:21 PM, "Ken Bannister" <kb2ma at runbox.com 
> <mailto:kb2ma at runbox.com>> wrote:
>     Hi all,
>     Recently I received private mail with some specific questions
>     about gcoap and DTLS. Responses below.
>     There is a work-in-progress pull request for integration of DTLS
>     and gcoap, #7177. There is good discussion in there about the best
>     way to integrate DTLS generically with RIOT's sock networking.
>     RIOT's master branch includes support for the Observe extension
>     for non-confirmable messaging. There is an open PR for integration
>     with confirmable messaging, #7548.
>     There also was a question about "periodic resources", but that's
>     not part of the CoAP spec AFAIK. Certainly one could integrate a
>     timer to periodically send Observe notifications.
>     Ken
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