April 2017
Intermediate to advanced
280 pages
6h 18m
English
Content preview from MQTT Essentials - A Lightweight IoT ProtocolBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Publishing messages with commands to target sensors
Make sure the Mosquitto server or any other MQTT server you might want to use for this example is running. Use your favorite Java IDE to run the example in any computer or build a .jar file with all the dependencies included and launch it in any computer or device that you want to use as the MQTT client with a command similar to the following line. In case you don't run the example in the same computer in which you are running the MQTT server, remember to change the value for the mqttServerHost string in the main method of the Main class. You must also copy the certificate files and the .jar file to the device. The next line uses Sensors02-0.0.1-SNAPSHOT.jar as the JAR file for the previous example: ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.