RFC 8824 on Static Context Header Compression (SCHC) for the Constrained Application Protocol (CoAP)
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Subject: RFC 8824 on Static Context Header Compression (SCHC) for the Constrained Application Protocol (CoAP)
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A new Request for Comments is now available in online RFC libraries. RFC 8824 Title: Static Context Header Compression (SCHC) for the Constrained Application Protocol (CoAP) Author: A. Minaburo, L. Toutain, R. Andreasen Status: Standards Track Stream: IETF Date: June 2021 Mailbox: ana@ackl.io, laurent.toutain@imt-atlantique.fr, randreasen@fi.uba.ar Pages: 30 Updates/Obsoletes/SeeAlso: None I-D Tag: draft-ietf-lpwan-coap-static-context-hc-19.txt URL: https://www.rfc-editor.org/info/rfc8824 DOI: 10.17487/RFC8824 This document defines how to compress Constrained Application Protocol (CoAP) headers using the Static Context Header Compression and fragmentation (SCHC) framework. SCHC defines a header compression mechanism adapted for Constrained Devices. SCHC uses a static description of the header to reduce the header's redundancy and size. While RFC 8724 describes the SCHC compression and fragmentation framework, and its application for IPv6/UDP headers, this document applies SCHC to CoAP headers. The CoAP header structure differs from IPv6 and UDP, since CoAP uses a flexible header with a variable number of options, themselves of variable length. The CoAP message format is asymmetric: the request messages have a header format different from the format in the response messages. This specification gives guidance on applying SCHC to flexible headers and how to leverage the asymmetry for more efficient compression Rules. This document is a product of the IPv6 over Low Power Wide-Area Networks Working Group of the IETF. This is now a Proposed Standard. STANDARDS TRACK: This document specifies an Internet Standards Track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the Official Internet Protocol Standards (https://www.rfc-editor.org/standards) for the standardization state and status of this protocol. Distribution of this memo is unlimited. This announcement is sent to the IETF-Announce and rfc-dist lists. To subscribe or unsubscribe, see https://www.ietf.org/mailman/listinfo/ietf-announce https://mailman.rfc-editor.org/mailman/listinfo/rfc-dist For searching the RFC series, see https://www.rfc-editor.org/search For downloading RFCs, see https://www.rfc-editor.org/retrieve/bulk Requests for special distribution should be addressed to either the author of the RFC in question, or to rfc-editor@rfc-editor.org. Unless specifically noted otherwise on the RFC itself, all RFCs are for unlimited distribution. The RFC Editor Team Association Management Solutions, LLC