%% You should probably cite draft-ietf-tls-applayerprotoneg instead of this I-D.
@techreport{friedl-tls-applayerprotoneg-02,
    number =    {draft-friedl-tls-applayerprotoneg-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-friedl-tls-applayerprotoneg/02/},
    author =    {Stephan Friedl and Andrei Popov},
    title =     {{Transport Layer Security (TLS) Application Layer Protocol Negotiation Extension}},
    pagetotal = 6,
    year =      2013,
    month =     feb,
    day =       21,
    abstract =  {This document describes a Transport Layer Security (TLS) extension for application layer protocol negotiation within the TLS handshake. For instances in which the TLS connection is established over a well known TCP/IP port not associated with the desired application layer protocol, this extension allows the application layer to negotiate which protocol will be used within the TLS session.},
}