@misc{rfc6520,
    series =    {Request for Comments},
    number =    6520,
    howpublished =  {RFC 6520},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC6520},
    url =       {https://www.rfc-editor.org/info/rfc6520},
    author =    {Michael Williams and Michael Tüxen and Robin Seggelmann},
    title =     {{Transport Layer Security (TLS) and Datagram Transport Layer Security (DTLS) Heartbeat Extension}},
    pagetotal = 9,
    year =      2012,
    month =     feb,
    abstract =  {This document describes the Heartbeat Extension for the Transport Layer Security (TLS) and Datagram Transport Layer Security (DTLS) protocols. The Heartbeat Extension provides a new protocol for TLS/DTLS allowing the usage of keep-alive functionality without performing a renegotiation and a basis for path MTU (PMTU) discovery for DTLS. {[}STANDARDS-TRACK{]}},
}