How do I set up CoAP Server in SED.

[Yogeshwar]

I want to set up CoAP server in SED so that I can send a command to SED and get a response from it

[ketiljo]

What is SED in this context? 

[Yogeshwar]

SED - Sleepy End Devices.

Basically the end nodes in a thread network that are normally disabled, wakes on occasion to poll for messages from its parent