Transport Layer Security and Datagram Transport Layer Security Heartbeat Extension
RFC 6520, “Transport Layer Security and Datagram Transport Layer Security Heartbeat Extension”, is a Proposed Standard document published in February 2012 by R. Seggelmann, M. Tuexen, M. Williams. It has since been updated by RFC 8447. The canonical text is published by the RFC Editor.
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]
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 6520 is hosted at rfc-editor.org. Available in TXT,HTML.
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