Mqtt protocol in IoT
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MQTT is a messaging protocol that allows devices to publish and subscribe to messages or "topics" through a broker. Publishers connect to the broker to publish content to topics, subscribers connect to the same broker to subscribe to topics they are interested in. The broker ensures published content is distributed to subscribers. Topics use a tree structure separated by forward slashes, and wildcards like # can subscribe to entire branches. An example shows sensors publishing temperature data to topics and a subscriber using wildcards to subscribe to multiple sensor topics.
Mqtt protocol in IoT
- 1. MQTT protocol in IoT Pravesh Kumar pkverma462@gmail.com
- 2. Introduction of MQTT MQTT terms Working of MQTT MQTT architecture
- 3. introduction Message Queue Telemetry Transport (MQTT) protocol Publisher 1 Subscriber n Subscriber 1 publisher Broker
- 4. MQTT terms Publisher:- It connect to server and publish the content Subscriber:- It connect to same message broker and subscribe to content that they are interested in Message Broker:- It assured that the published content to its subscriber Topic:- Content is identify by topic
- 5. Topic in mqtt Topics are ordered into a tree structure The forward slash ( / )is describe as topic path Hash wildcard(#) is used to subscribe entire branch example The publisher send the measured data to “Pravesh/firstIoT/sensors/temperature” topic Subscribing to Pravesh/+/sensors/# will subscribe to all subbranches of the sensors class
- 6. Architecture of MQTT Local Area Network Internet Protocol TCP MQTT over SSL/TLS TCP MQTT Physica l
- 7. Example ROOM 1 ROOM 2 ROOM 3 HOUSE TOPIC HOUSE/ROOM1/temp1 HOUSE/ROOM2/temp2 HOUSE/ROOM3/temp3 HOUSE/+/#
- 8. Thank you