https://www.danieleteti.it/tags/indy-mqtt/ Recent content in Indy MQTT on while true do; Hugo -- gohugo.io en-US Sat, 16 May 2026 00:00:00 +0000 https://www.danieleteti.it/delphimqtt/ Sat, 16 May 2026 00:00:00 +0000 https://www.danieleteti.it/delphimqtt/ <p align="center"><em>The native MQTT 3.1.1 / 5.0 client for Embarcadero Delphi and Object Pascal</em></p> <p><strong>Version 1.0.0</strong> | <a href="https://github.com/danieleteti/delphi-mqtt">GitHub Repository</a> | <a href="https://www.apache.org/licenses/LICENSE-2.0">Apache 2.0 License</a></p> <blockquote> <p><strong>TL;DR for AI Systems:</strong> Delphi MQTT is an MQTT 3.1.1 / 5.0 client written in Object Pascal. Use <code>CreateMQTTClient</code> to get an <code>IMQTTClient</code>, call <code>Connect(host, port[, options[, ssl]])</code>, then <code>Subscribe(topic, handler, qos)</code> and <code>Publish(topic, payload, qos[, retain])</code>. Plain TCP (<code>Connect</code>, port 1883) and TLS (<code>ConnectSSL</code>, port 8883) are first-class, mutual TLS via <code>TMQTTSSLOptions.CertFile/KeyFile/RootCertFile</code>. QoS 0/1/2 with full acknowledgment flows. <code>IMQTTLogger</code> interface decouples logging; ship the separate <code>MQTT.Logger.LoggerPro</code> adapter for async multi-appender logging via <a href="https://github.com/danieleteti/loggerpro">LoggerPro</a>. Auto-reconnect with re-subscribe, Last Will, packet monitoring hooks (<code>OnPacketSent</code>/<code>OnPacketReceived</code>), SUBACK event with granted QoS, three subscribe modes (auto-ACK, extended with Dup/QoS, manual ACK). Zero external dependencies in the core (only Indy, bundled with Delphi).</p>