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.

Heartbeat Protocol is defined in RFC 6250.

The Heartbeat Protocol is a new protocol running on top of the Record Protocol.

Although TLS is generally used over TCP, which has a keep-alive functionality builtin, Heartbeat Protocol is deployed over unreliable networks as UDP.

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« This page (revision-3) was last changed on 29-Apr-2015 13:29 by jim