So siehts ganz gut aus !

node_modules/mqtt/examples/client/secure-client.js

@@ -0,0 +1,24 @@
+'use strict'
+
+var mqtt = require('../..')
+var path = require('path')
+var fs = require('fs')
+var KEY = fs.readFileSync(path.join(__dirname, '..', '..', 'test', 'helpers', 'tls-key.pem'))
+var CERT = fs.readFileSync(path.join(__dirname, '..', '..', 'test', 'helpers', 'tls-cert.pem'))
+
+var PORT = 8443
+
+var options = {
+  port: PORT,
+  key: KEY,
+  cert: CERT,
+  rejectUnauthorized: false
+}
+
+var client = mqtt.connect(options)
+
+client.subscribe('messages')
+client.publish('messages', 'Current time is: ' + new Date())
+client.on('message', function (topic, message) {
+  console.log(message)
+})