<ul><li>MQTT (Message Queue Telemetry Transport) is a lightweight publish-subscribe messaging protocol designed for IoT devices and networks.</li><li>Mosquitto is an open-source MQTT broker that acts as a central hub for message exchange.</li><li>MQTT allows devices to publish messages to a topic, and subscribed devices can receive those messages.</li><li>Troubleshooting self-signed certificate issues is important when working with MQTT and Mosquitto for secure communication.</li></ul>

MQTT Errors: Troubleshooting Self-Signed Certificate Issues with Mosquitto

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