MQTT: Difference between revisions
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=MQTT - A Protocol for Connecting IoT Devices= | =MQTT - A Protocol for Connecting IoT Devices= | ||
MQTT is a ''really'' simple protocol that connected devices can use to publish and receive messages. Messages have a topic and may contain an arbitrary payload. Devices never talk to each other directly. A MQTT | MQTT is a ''really'' simple protocol that connected devices can use to publish and receive messages. Messages have a topic and may contain an arbitrary payload. Devices never talk to each other directly. A server (MQTT broker) receives published messages and distributes them to subscribers by matching message topics with subscribed-to topics. | ||
* [[MQTT FSM|Handshaking]] - a FSM (Finite State Machine) of the protocol at QoS 0, 1, 2 | * [[MQTT FSM|Handshaking]] - a FSM (Finite State Machine) of the protocol at QoS 0, 1, 2 | ||
Revision as of 11:25, 12 June 2018
MQTT - A Protocol for Connecting IoT Devices
MQTT is a really simple protocol that connected devices can use to publish and receive messages. Messages have a topic and may contain an arbitrary payload. Devices never talk to each other directly. A server (MQTT broker) receives published messages and distributes them to subscribers by matching message topics with subscribed-to topics.
- Handshaking - a FSM (Finite State Machine) of the protocol at QoS 0, 1, 2
- MQTT Encoding and Decoding
- Limits of the Arduino environment (like, conversational state)