Change MQTT example to connect to local network virtual machine.

Messaging/clientEx copy.py

@@ -22,7 +22,7 @@ def on_disconnect(client, userdata, rc):
     if rc != 0:
         print("Unexpected disconnection.")
 
-mqttc = mqtt.Client(transport="websockets")
+mqttc = mqtt.Client()
 
 # mqttc.tls_set_context(context = ssl.create_default_context())
 
@@ -30,7 +30,7 @@ mqttc.on_connect = on_connect
 mqttc.on_disconnect = on_disconnect
 mqttc.on_message = on_message
 
-mqttc.connect('iot.eclipse.org', 1883, 60)
+mqttc.connect('172.16.13.128', 1883, 60)
 
 mqttc.loop_start()