Key FeaturesMake your connected devices less prone to attackers by understanding practical security mechanismsDive deep into one of IoTs extremely lightweight machines to enable connectivity protocol with some real-world examplesLearn to take advantage of the features included in MQTT for IoT and Machine-to-Machine communications with complete real-life examplesBook DescriptionThis step-by-step guide will help you gain a deep understanding of the lightweight MQTT protocol. Well begin with the specific vocabulary of MQTT and its working modes, followed by installing a Mosquitto MQTT broker. Then, you will use best practices to secure the MQTT Mosquitto broker to ensure that only authorized clients are able to publish and receive messages. Once you have secured the broker with the appropriate configuration, you will develop a solution that controls a drone with Python.Further on, you will use Python on a Raspberry Pi 3 board to process commands and Python on Intel Boards (Joule, Edison and Galileo). You will then connect to the MQTT broker, subscribe to topics, send messages, and receive messages in Python. You will also develop a solution that interacts with sensors in Java by working with MQTT messages.Moving forward, you will work with an asynchronous API with callbacks to make the sensors interact with MQTT messages. Following the same process, you will develop an iOS app with Swift 3, build a website that uses WebSockets to connect to the MQTT broker, and control home automation devices with HTML5, JavaScript code, Node.js and MQTT messagesWhat you will learnUnderstand how MQTTv3.1 and v3.1.1 works in detailInstall and secure a Mosquitto MQTT broker by following best practicesDesign and develop IoT solutions combined with mobile and web apps that use MQTT messages to communicateExplore the features included in MQTT for IoT and Machine-to-Machine communicationsPublish and receive MQTT messages with Python, Java, Swift, JavaScript, and Node.jsImplement the security best practices while setting up the MQTT Mosquitto brokerAbout the AuthorGaston C. Hillar is Italian and has been working with computers since he was eight. He began programming with the legendary Texas TI-99/4A and Commodore 64 home computers in the early 80s. He has a bachelors degree in computer science (graduated with honors), and an MBA (graduated with an outstanding thesis). At present, Gaston is an independent IT consultant and freelance author who is always looking for new adventures around the world.He has been a senior contributing editor at Dr. Dobbs and has written more than a hundred articles on software development topics. Gaston was also a former Microsoft MVP in technical computing. He has received the prestigious Intel® Black Belt Software Developer award eight times.He is a guest blogger at Intel® Software Network (http://software.intel.com). You can reach him at gastonhillar@hotmail.com and follow him on Twitter at http://twitter.com/gastonhillar. Gastons blog is http://csharpmulticore.blogspot.com.He lives with his wife, Vanesa, and his two sons, Kevin and Brandon.Table of ContentsLightweight Messaging with MQTT 3.1.1 and MosquittoSecuring an MQTT Mosquitto ServerControlling a Drone with PythonInteracting with Sensors in JavaControlling Home Automation in JavaScriptInteracting with Actuators in SwiftExersise Answers