Constrained Application Protocol: Difference between revisions

Revision as of 12:55, 30 December 2011

Revision as of 12:08, 13 January 2012

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{{context|date=August 2011}}

'''Constrained Application Protocol''' (CoAP), is an [[Application layer]] protocol that is intended for use in resource-constrained internet devices, such as [[WSN]] nodes. CoAP is designed to easily translate to [[HTTP]] for simplified integration with the web, while also meeting specialized requirements such as [[multicast]] support, very low overhead, and simplicity <ref>Constrained Application Protocol (CoAP) draft-shelby-core-coap-07 [https://datatracker.ietf.org/doc/draft-ietf-core-coap/ https://datatracker.ietf.org/doc/draft-ietf-core-coap/]</ref><ref>"[http://hinrg.cs.jhu.edu/joomla/images/stories/IPSN_2011_koliti.pdf Integrating Wireless Sensor Networks with the Web]" , Walter, Colitti 2011</ref>. Multicast, low overhead, and simplicity are extremely important for [[Internet of Things]] (IoT) and {{disambiguation needed[[Machine-to-Machine|M2M|date=December 2011}}]] devices, which tend to be deeply [[Embedded system|embedded]] and have much less memory and power supply than traditional internet devices have. Therefore, efficiency is very important. CoAP can run on most devices that support [[User Datagram Protocol|UDP]] or a UDP analogue.

The Internet Engineering Task Force ([[IETF]]) Constrained [[RESTful]] environments ([[CoRE]]) Working Group has done the major standardization work for this protocol. In order to make the protocol suitable to IoT and M2M applications, various new functionalities have been added. This protocol is still under development.