The Constrained Application Protocol (CoAP) is a specialized web transfer
protocol for use with constrained nodes and constrained networks in the Internet
of Things. The protocol is designed for machine-to-machine (M2M) applications
such as smart energy and building automation.
libcoap implements a lightweight application-protocol for devices with
constrained resources such as computing power, RF range, memory, bandwidth,
or network packet sizes. This protocol, CoAP, was standardized in the IETF
working group "CoRE" as RFC 7252.
