MQTT Essentials - A Lightweight IoT Protocol (ebook)(audiobook)(audiobook)

Spis treści

• MQTT Essentials - A Lightweight IoT Protocol
  • MQTT Essentials - A Lightweight IoT Protocol
  • Credits
  • About the Author
  • Acknowledgment
  • About the Reviewer
  • www.PacktPub.com
    • Why subscribe?
  • Customer Feedback
  • Dedication
  • Preface
    • What this book covers
    • What you need for this book
    • Who this book is for
    • Conventions
    • Reader feedback
    • Customer support
      • Downloading the example code
      • Downloading the color images of this book
      • Errata
      • Piracy
      • Questions
  • 1. Lightweight Messaging with MQTT 3.1.1 and Mosquitto
    • Understanding convenient scenarios for the MQTT protocol
    • Working with the publish-subscribe pattern
    • Working with message filtering
    • Understanding the MQTT puzzle -- clients, servers, and connections
    • Installing a Mosquitto broker on Ubuntu Linux
    • Installing a Mosquitto broker on macOS
    • Installing a Mosquitto broker on Windows
    • Subscribing to topics
    • Publishing messages
    • Unsubscribing from topics
    • Working with best practices when creating topics
    • Understanding wildcards
    • Learning about the different Quality of Service levels
    • Working with at least once delivery
    • Working with exactly once delivery
    • Test your knowledge
    • Summary
  • 2. Securing an MQTT Mosquitto Server
    • Securing a Mosquitto server
    • Generating a private certificate authority to use TLS with Mosquitto
    • Creating a certificate for the Mosquitto server
    • Configuring TLS transport security in Mosquitto
    • Testing the MQTT TLS configuration with MQTT.fx
    • Testing the MQTT TLS configuration with MQTT-spy
    • Creating a certificate for each MQTT client
    • Configuring TLS client certificate authentication in Mosquitto
    • Testing the MQTT TLS client authentication with MQTT.fx
    • Testing the MQTT TLS configuration with MQTT-spy
    • Forcing the TLS protocol version
    • Test your knowledge
    • Summary
  • 3. Controlling a Drone with Python
    • Understanding the requirements to control a drone with MQTT
    • Defining the topics and commands
    • Installing paho-mqtt for Python
    • Connecting the client to the MQTT server with Python
    • Understanding callbacks
    • Subscribing to topics with Python
    • Creating a class to represent a drone
    • Receiving messages with Python
    • Processing commands with Python
    • Sending messages with Python
    • Working with the network loop with Python
    • Test your knowledge
    • Summary
  • 4. Interacting with Sensors in Java
    • Understanding the requirements
    • Defining the topics and commands
    • Installing the Eclipse Paho Java Client
    • Creating a security helper class to establish a TLS secured connection
    • Configuring a TLS secured connection in Java
    • Working with asynchronous notifications and callbacks in Java
    • Subscribing to topics and understanding notification events in Java
    • Processing commands that interact with sensors in Java
    • Working with last will and testament in Java
    • Publishing messages with commands to target sensors
    • Test your knowledge
    • Summary
  • 5. Controlling Home Automation in JavaScript
    • Understanding the requirements
    • Defining the topics and commands to control home automation
    • Enabling WebSockets for a Mosquitto server
    • Testing WebSockets with the Eclipse Paho client JavaScript utility
    • Understanding the Eclipse Paho JavaScript asynchronous client
    • Creating an HTML 5 web page to control LEDs
    • Publishing messages to target remote devices in JavaScript
    • Processing the received messages in JavaScript
    • Working with WebSockets to connect to the MQTT server
    • Subscribing to topics in JavaScript
    • Processing commands that interact with LEDs in Node.js
    • Running the home automation web application
    • Debugging asynchronous code with Chrome Developer Tools (CDT) in JavaScript
    • Securing MQTT over WebSockets with TLS
    • Test your knowledge
    • Summary
  • 6. Interacting with Actuators in Swift
    • Understanding the requirements
    • Defining topics and commands
    • Enabling connections without TLS for a Mosquitto server
    • Installing the CocoaMQTT client library to create a new iOS app
    • Building the UI for the iOS app that will control an actuator
    • Understanding the CocoaMQTT client in Swift 3
    • Connecting to the MQTT server and subscribing to topics in Swift
    • Publishing messages to target actuators in Swift
    • Processing commands that interact with actuators in Node.js
    • Running the iOS app that controls an actuator with MQTT
    • Debugging events in Swift
    • Test your knowledge
    • Summary
  • A. Exersise Answers
    • Chapter 1, Lightweight Messaging with MQTT 3.1.1 and Mosquitto
    • Chapter 2, Securing an MQTT Mosquitto Server
    • Chapter 3, Controlling a Drone with Python
    • Chapter 4, Interacting with Sensors in Java
    • Chapter 5, Controlling Home Automation in JavaScript
    • Chapter 6, Interacting with Actuators in Swift

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