CoAP: An Application Protocol for Billions of Tiny Internet Nodes
Carsten Bormann, Angelo Paolo Castellani, Zach Shelby · IEEE Internet Computing · 2012
The Constrained Application Protocol (CoAP) is a transfer protocol for constrained nodes and networks, such as those that will form the Internet of Things. Much like its older and heavier cousin HTTP, CoAP uses the REST architectural style. Based on UDP and unencumbered by historical baggage, however, CoAP aims to achieve its modest goals with considerably less complexity.