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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Working with WebSockets to connect to the MQTT server
The following lines declare the onConnectSuccess and connect functions within the APP.HomeAutomation.Manager object. The code file for the sample is included in the mqtt_essentials_gaston_hillar_05 folder, in the home_automation.js file:
onConnectSuccess: function(invocationContext) { onConnectSuccess: function(invocationContext) { // Update the status text document.getElementById("status").textContent = "Connected with the MQTT Server"; // Now, subscribe to home/results/leds/1, home/results/leds/2 and // home/results/leds/3 var client = invocationContext.invocationContext.client; for (var i = 1; i < 4; i++) { client.subscribe("home/results/leds/" + i); } }, connect: function() { this.client ...Become 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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