So siehts ganz gut aus !

node_modules/mqtt/examples/client/simple-both.js

@@ -0,0 +1,13 @@
+'use strict'
+
+var mqtt = require('../..')
+var client = mqtt.connect()
+
+// or var client = mqtt.connect({ port: 1883, host: '192.168.1.100', keepalive: 10000});
+
+client.subscribe('presence')
+client.publish('presence', 'bin hier')
+client.on('message', function (topic, message) {
+  console.log(message)
+})
+client.end()