Publish-Subscribe Broker for the Constrained Application Protocol (CoAP)

Document Type Replaced Internet-Draft (individual)
Authors Michael Koster  , Ari Keränen  , Jaime Jimenez 
Last updated 2017-01-09 (latest revision 2016-07-08)
Replaces draft-koster-core-coapmq
Replaced by draft-ietf-core-coap-pubsub
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Intended RFC status (None)
Expired & archived
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Stream Stream state (No stream defined)
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IESG IESG state Replaced by draft-ietf-core-coap-pubsub
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


The Constrained Application Protocol (CoAP), and related extensions are intended to support machine-to-machine communication in systems where one or more nodes are resource constrained, in particular for low power wireless sensor networks. This document defines a publish- subscribe broker for CoAP that extends the capabilities of CoAP for supporting nodes with long breaks in connectivity and/or up-time.


Michael Koster (
Ari Keränen (
Jaime Jimenez (

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