%% You should probably cite draft-ietf-httpbis-origin-frame instead of this I-D.
@techreport{nottingham-httpbis-origin-frame-00,
    number =    {draft-nottingham-httpbis-origin-frame-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-nottingham-httpbis-origin-frame/00/},
    author =    {Mark Nottingham and Erik Nygren},
    title =     {{The ORIGIN HTTP/2 Frame}},
    pagetotal = 4,
    year =      2015,
    month =     jul,
    day =       20,
    abstract =  {This document specifies the ORIGIN frame for HTTP/2, to indicate what origins are available on a given connection.},
}