Two Way communication Using MQTT and Python

MQTT is a publish and subscribe protocol with no direct connection between clients. However many applications require a client to client type connection. Examples are: Chat Sensor or device control This can be achieved in all versions of MQTT but it has been made easier in MQTTv5 with the introduction of request response in the publish payload. In this tutorial we look at achieving the same in MQTTv3.1.1.

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Examining MQTTv5 User Properties

Properties (MQTTv5) are probably one of the most important additions to the MQTT protocol, and are available in most MQTT message types. The property fields are dependent upon message type, so a CONNECT message will have different property fields than a PUBLISH message.

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Understanding And Using MQTT v5 Request Response

Web Applications have a direct connection between the sender and receiver. The sender is the client (web browser) and the receiver is the server. They implement a command response message flow were the client(browser) makes a request and the server responds and there is a direct connection between client and server.

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MQTT v 5.0 New Features Overview

MQTT v5 introduced many new features and changed how some existing features work. In this tutorial I will be covering all of these features with brief examples, and also in many case, links to detailed examples and videos.

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How MQTT Works -Beginners Guide

MQTT is a messaging protocol i.e it was designed for transferring messages, and uses a publish and subscribe model. This model makes it possible to send messages to 0,1 or multiple clients.

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Public MQTT Brokers and Reserved Topics – Discussion Post

Preface This is a discussion post and these are currently my thoughts on this topic. I would be grateful for comments and feedback. Introduction MQTT is still in the early stages of deployment and currently is used only on private networks. However with the growth in the adoption of the MQTT protocol for information distribution the number of public brokers and topics will probably increase substantially just as happened with websites in the early days of the internet.

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