%% You should probably cite rfc7118 instead of this I-D.
@techreport{ietf-sipcore-sip-websocket-10,
    number =    {draft-ietf-sipcore-sip-websocket-10},
    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-sipcore-sip-websocket/10/},
    author =    {Inaki Baz Castillo and Jose Luis Millan and Victor Pascual},
    title =     {{The WebSocket Protocol as a Transport for the Session Initiation Protocol (SIP)}},
    pagetotal = 25,
    year =      2013,
    month =     nov,
    day =       28,
    abstract =  {The WebSocket protocol enables two-way real-time communication between clients and servers in web-based applications. This document specifies a WebSocket subprotocol as a reliable transport mechanism between Session Initiation Protocol (SIP) entities to enable use of SIP in web-oriented deployments.},
}