Browse Definitions :
Definition

Constrained Application Protocol (CoAP)

Contributor(s): Matthew Haughn

Constrained Application Protocol (CoAP) is a protocol that specifies how low-power compute-constrained devices can operate in the internet of things (IoT). Designed by the Internet Engineering Task Force (ITEF), CoAP is specified in IETF RFC 7252.

CoAP is designed to enable simple, constrained devices to join the IoT even through constrained networks with low bandwidth and low availability. The protocol is generally used for machine-to-machine (M2M) communication.

CoAP functions as a sort of HTTP for constrained devices, enabling such component level equipment as sensors or actuators to communicate on the IoT, being controlled and passing along their data as part of a system. The protocol is designed for reliability in low bandwidth and high congestion through its low power draw and low network overhead. According to Jullian Vermillard, Sierra Wireless principle engineer of software, in a network with limited connectivity or a lot of congestion CoAP can continue to work where TCP-based protocols such as MQTT fail to complete a handshake.

The efficient and conservative traits of CoAP can enable devices operating in poor signal quality to send their data reliably or enable a satellite in orbit maintain to its distant communication successfully. Despite CoAp’s ability to run on small devices, it supports networks with billions of nodes. For security, the DTLS parameters chosen for default are an equivalent to 3072 bit RSA keys.

This was last updated in January 2018

Continue Reading About Constrained Application Protocol (CoAP)

Start the conversation

Send me notifications when other members comment.

Please create a username to comment.

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchCompliance

SearchSecurity

  • GPS jamming

    GPS jamming is the process of using a frequency transmitting device to block or interfere with radio communications.

  • time-based one-time password (TOTP)

    A time-based one-time password (TOTP) is a temporary code, generated by an algorithm, for use in authenticating access to ...

  • Security Operations Center (SOC)

    A security operations center (SOC) is a command center facility for a team of IT professionals with expertise in information ...

SearchHealthIT

SearchDisasterRecovery

  • disaster recovery team

    A disaster recovery team is a group of individuals focused on planning, implementing, maintaining, auditing and testing an ...

  • cloud insurance

    Cloud insurance is any type of financial or data protection obtained by a cloud service provider. 

  • business continuity software

    Business continuity software is an application or suite designed to make business continuity planning/business continuity ...

SearchStorage

  • SSD (solid-state drive)

    An SSD (solid-state drive) is a type of nonvolatile storage media that stores persistent data on solid-state flash memory.

  • NAND flash memory

    NAND flash memory is a type of nonvolatile storage technology that does not require power to retain data.

  • storage class memory (SCM)

    Storage class memory (SCM) is a type of NAND flash that includes a power source to ensure that data won't be lost due to a system...

Close