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Everything about Constrained Application Protocol

Specialized Internet application protocol

Constrained Application Protocol (CoAP) is a specialized UDP-based Internet application protocol for constrained devices, as defined in RFC 7252. It enables those constrained devices called "nodes" to communicate with the wider Internet using similar protocols. CoAP is designed for use between devices on the same constrained network, between devices and general nodes on the Internet, and between devices on different constrained networks both joined by an internet. CoAP is also being used via other mechanisms, such as SMS on mobile communication networks. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: Constrained Application ProtocolA 5-minute orientation
  2. Skim a recent paper: Congestion Control in Constrained Application Protocol for the Internet of Things: State-of-the-Art, Challenges, and Future DirectionsInfluential work since 2022
  3. Pick up a classic book: Metabolic flux analysisThe most-reprinted book on the subject
  4. Read the landmark paper: A personal connected health system for the Internet of Things based on the Constrained Application ProtocolCited 48 times
  5. Go sideways: User Datagram ProtocolA closely related topic
  6. Go sideways: DHCPv6A closely related topic

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🏆 Landmark papers (most cited)

🆕 Influential since 2022

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