Constrained Application Protocol
Formal
Constrained Application Protocol (CoAP) is a specialized Internet Application Protocol for constrained devices, as defined in RFC 7252. It enables those constrained devices called "nodes" to communicate with the wider Internet using similar protocols.
Practical
Based on the popular REST model, CoAP is a specialized web transfer protocol for use with constrained nodes and constrained networks (e.g., low-power, lossy) in the IoT. A specialized web transfer protocol for use with constrained nodes and constrained networks in the Internet of Things.
