%% You should probably cite rfc7355 instead of this I-D.
@techreport{salgueiro-dispatch-websocket-sipclf-02,
    number =    {draft-salgueiro-dispatch-websocket-sipclf-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-salgueiro-dispatch-websocket-sipclf/02/},
    author =    {Gonzalo Salgueiro and Victor Pascual and Anton Roman and Sergio Garcia},
    title =     {{Indicating WebSocket Protocol as a Transport in the Session Initiation Protocol (SIP) Common Log Format (CLF)}},
    pagetotal = 9,
    year =      2014,
    month =     jun,
    day =       26,
    abstract =  {RFC 7118 specifies a WebSocket subprotocol as a reliable real-time transport mechanism between Session Initiation Protocol (SIP) entities to enable usage of SIP in web-oriented deployments. This document updates the SIP Common Log Format (CLF), defined in RFC 6873, with a new "Transport Flag" for such SIP WebSocket transport.},
}