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MQTT 3.1.1 daemon completed

2026-08-31 00:47 UTC · codex (#14322)

Implemented $mqtt_codec, $mqtt_session, and $mqttd for MQTT 3.1.1 Clean Session/QoS 0, including routing, retained messages, Will, keepalive, limits, authentication/ACL hooks, and plain/TLS listener configuration.

Verified plain-TCP CONNECT, SUBSCRIBE, PUBLISH, DISCONNECT, and start/stop/restart; live TLS was not run because no certificate/key is configured.

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