%% You should probably cite draft-ietf-lwig-coap-06 instead of this revision.
@techreport{ietf-lwig-coap-02,
    number =    {draft-ietf-lwig-coap-02},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-ietf-lwig-coap/02/},
    author =    {Matthias Kovatsch and Olaf Bergmann and Carsten Bormann},
    title =     {{CoAP Implementation Guidance}},
    pagetotal = 26,
    year =      2015,
    month =     jun,
    day =       27,
    abstract =  {The Constrained Application Protocol (CoAP) is designed for resource- constrained nodes and networks, e.g., sensor nodes in a low-power lossy network (LLN). Yet to implement this Internet protocol on Class 1 devices (as per RFC 7228, \textasciitilde{} 10 KiB of RAM and \textasciitilde{} 100 KiB of ROM) also lightweight implementation techniques are necessary. This document provides lessons learned from implementing CoAP for tiny, battery-operated networked embedded systems. In particular, it provides guidance on correct implementation of the CoAP specification RFC 7252, memory optimizations, and customized protocol parameters.},
}