Add json config file implementation

Messaging/clientEx copy.py

@@ -2,6 +2,11 @@ import umsgpack
 import paho.mqtt.client as mqtt
 import time
 import ssl
+import json
+
+cfg = None
+with open('../config.json') as json_config:
+    cfg = json.load(json_config)
 
 connected = False
 
@@ -30,7 +35,7 @@ mqttc.on_connect = on_connect
 mqttc.on_disconnect = on_disconnect
 mqttc.on_message = on_message
 
-mqttc.connect('172.16.13.128', 1883, 60)
+mqttc.connect(cfg.mqtt.host, cfg.mqtt.port, cfg.mqtt.timeout)
 
 mqttc.loop_start()