MQTT Essentials - A Lightweight IoT Protocol

Table of contents

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