This document defines a Constrained Application Protocol (CoAP) Usage
for REsource LOcation And Discovery (RELOAD). The CoAP Usage
provides the functionality to federate Wireless Sensor Networks (WSN)
in a peer-to-peer fashion. The CoAP Usage also provides a rendezvous
service for CoAP Nodes and caching of sensor information. The RELOAD
AppAttach method is used to establish a direct connection between
nodes through which CoAP messages are exchanged.