%% You should probably cite draft-silverajan-core-coap-protocol-negotiation-09 instead of this revision.
@techreport{silverajan-core-coap-protocol-negotiation-04,
    number =    {draft-silverajan-core-coap-protocol-negotiation-04},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-silverajan-core-coap-protocol-negotiation/04/},
    author =    {Bill Silverajan and Mert Ocak},
    title =     {{CoAP Protocol Negotiation}},
    pagetotal = 11,
    year =      2016,
    month =     oct,
    day =       31,
    abstract =  {CoAP has been standardised as an application-level REST-based protocol. When multiple transport protocols exist for exchanging CoAP resource representations, this document introduces a way forward for CoAP endpoints as well as intermediaries to agree upon alternate transport and protocol configurations as well as URIs for CoAP messaging, using the CoRE Resource Directory.},
}