@misc{rfc8974,
    series =    {Request for Comments},
    number =    8974,
    howpublished =  {RFC 8974},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC8974},
    url =       {https://www.rfc-editor.org/info/rfc8974},
    author =    {Klaus Hartke and Michael Richardson},
    title =     {{Extended Tokens and Stateless Clients in the Constrained Application Protocol (CoAP)}},
    pagetotal = 20,
    year =      2021,
    month =     jan,
    abstract =  {This document provides considerations for alleviating Constrained Application Protocol (CoAP) clients and intermediaries of keeping per-request state. To facilitate this, this document additionally introduces a new, optional CoAP protocol extension for extended token lengths. This document updates RFCs 7252 and 8323 with an extended definition of the "TKL" field in the CoAP message header.},
}