%% You should probably cite rfc7231 instead of this I-D.
@techreport{ietf-httpbis-p2-semantics-20,
    number =    {draft-ietf-httpbis-p2-semantics-20},
    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-httpbis-p2-semantics/20/},
    author =    {Roy T. Fielding and Yves Lafon and Julian Reschke},
    title =     {{HTTP/1.1, part 2: Semantics and Payloads}},
    pagetotal = 108,
    year =      2012,
    month =     jul,
    day =       16,
    abstract =  {The Hypertext Transfer Protocol (HTTP) is an application-level protocol for distributed, collaborative, hypertext information systems. This document defines the semantics of HTTP/1.1 messages, as expressed by request methods, request header fields, response status codes, and response header fields, along with the payload of messages (metadata and body content) and mechanisms for content negotiation.},
}