Accept-Any option for CoAP

Document Type Expired Internet-Draft (individual)
Author Christian Amsüss 
Last updated 2019-09-26 (latest revision 2019-03-25)
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This memoy defines the Accept-Any option, which provides a more flexible content negotiation than the one originally specified for the Constrained Application Protocol (CoAP) in [RFC7252]. As this is particularly useful with but ruled out in CoAP observation ([RFC7641]), that is updated to allow it.


Christian Amsüss (

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