CoAP Implementation Guidance

Document Type Replaced Internet-Draft (individual)
Authors Matthias Kovatsch  , Olaf Bergmann  , Esko Dijk  , Xuan He  , Carsten Bormann 
Last updated 2014-07-03 (latest revision 2014-03-03)
Replaced by draft-ietf-lwig-coap
Stream (None)
Expired & archived
plain text xml pdf htmlized bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Replaced by draft-ietf-lwig-coap
Telechat date
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


The Constrained Application Protocol (CoAP) is designed for resource- constrained nodes and networks, e.g., sensor nodes in a low-power lossy network (LLN). Yet to implement this Internet protocol on Class 1 devices (i.e., ~ 10 KiB of RAM and ~ 100 KiB of ROM) also lightweight implementation techniques are necessary. This document provides lessons learned from implementing CoAP for tiny, battery- operated networked embedded systems. In particular, it provides guidance on correct implementation of the CoAP specification [I-D.ietf-core-coap], memory optimizations, and customized protocol parameters.


Matthias Kovatsch (
Olaf Bergmann (
Esko Dijk (
Xuan He (
Carsten Bormann (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)