Service discovery in resource constrained networks using multicast DNS

The Internet of Things is expected to network a large number of constrained devices. The variety of services these devices would deliver and the access they may need to preexisting services introduces a need for an efficient and simple device and service discovery solution. Using standardized and widely adopted solutions would allow for faster integration into the Internet because tools and systems that could utilize such systems already exist. Multicast DNS (mDNS) combined with DNS Service Discovery (DNS-SD) provides a solution that meets these criteria. In this paper we present the implementation of mDNS and DNS-SD for resource constrained devices. An evaluation on the suitability of using these in resource constrained networks is also presented.