Learning AWS IoT

Conventions used

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "To install the AWS IoT SDK for JavaScript, you can do so through the npm package."

A block of code is set as follows:

device   .on('connect', function() {     console.log('connected');     device.subscribe('topic_1');     device.publish('topic_1', JSON.stringify({ test_data: 1}));   });

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

device .on('message', function(topic, payload) { console.log('recv:', topic, payload.toString()); ...