RFC 9177

Constrained Application Protocol (CoAP) Block-Wise Transfer Options Supporting Robust Transmission, March 2022

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Status:
PROPOSED STANDARD
Authors:
M. Boucadair
J. Shallow
Stream:
IETF
Source:
core (art)

Cite this RFC: TXT  |  XML

DOI:  10.17487/RFC9177

Discuss this RFC: Send questions or comments to core@ietf.org

Other actions: Submit Errata  |  Find IPR Disclosures from the IETF  |  View History of RFC 9177


Abstract

This document specifies alternative Constrained Application Protocol (CoAP) block-wise transfer options: Q-Block1 and Q-Block2.

These options are similar to, but distinct from, the CoAP Block1 and Block2 options defined in RFC 7959. The Q-Block1 and Q-Block2 options are not intended to replace the Block1 and Block2 options but rather have the goal of supporting Non-confirmable (NON) messages for large amounts of data with fewer packet interchanges. Also, the Q-Block1 and Q-Block2 options support faster recovery should any of the blocks get lost in transmission.


For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 8729.




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