FR: Add CoAP protocol support

[beriberikix]

CoAP is a popular IoT protocol that is more REST-like than MQTT. There looks to be a good library on NPM.

[chrismatthieu]

Thanks for making us aware of CoAP and the NPM library! It wasn't on our radar (until now). We currently support HTTP REST, WebSockets, and MQTT. MQTT is similar to websockets pub/sub channels. It's nice to hear that there is an IoT REST-like protocol which should fit nicely with our stack!

[beriberikix]

On twitter @mcollina mentioned his protocol bridge worthy of checking out: https://github.com/mcollina/ponte

[mcollina]

If you want to tinker with CoAP, I have also written a small CLI: https://npmjs.org/package/coap-cli.
It's based on node-coap.

[chrismatthieu]

I was thinking about adding a CLI to skynet too. If integrating your CoAP solution is a simple as your MQTT, this will be a cake walk ;)