An Implementation of CoAP-Based Resource Directory in Californium
Yao Wang, Gengyu Wei · 2018
Although Resource Directory (RD) is proposed and still under standardization by IETF CoRE WG for resource discovery in constrained networks, Californium as an open-source platform of CoAP is short of the RD functions and could not well support CoAP-based applications to do data analysis related to discoveries and allocations. This paper demonstrates an implementation of RD entity with basic mechanisms including URI discovery, resource registration and resource lookup in Californium. The experimental results show that the implementation works are feasible and consistent with CoRE WG's RD specification. Also its performance is given and achieves satisfactory results. By realizing the RD functions in Californium, this paper could promote CoAP based on IoT researches on the Californium framework in the future.