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224	224
225	225	(% class="box" %)
226	226	(((
227		-# Call MQTT Publish command
	227	+//# Call MQTT Publish command
228	228	\\# 1. Case with User, Password and Client ID present  (e.g. Azure)
229	229	if [ ! -z "$pass" ] && [ ! -z "$user" ] && [ ! -z "$clientID" ]; then
230	230	case="1"
...	...	@@ -251,9 +251,9 @@
251	251	mosquitto_pub $D -h $server -p $port -q $pub_qos  -t $pub_topic -u $user -P "$pass" $PUB_FLAG "$mqtt_data"
252	252	\\# 0. Else - invalid parameters, just log
253	253	else
254		-case="Invalid parameters"
255		-logger "[IoT.MQTT]:Invalid Parameters - mosquitto_pub not called."
256		-fi
	254	+case="(% style="color:red" %)Invalid parameters" (%%)
	255	+logger (% style="color:red" %)"[IoT.MQTT]:Invalid Parameters - mosquitto_pub not called."(%%)
	256	+fi//
257	257	)))
258	258
259	259
...	...	@@ -263,6 +263,7 @@
263	263
264	264	This section is an example to show how to set up LG01-N to communicate with a MQTT server. The MQTT server is a simple utility set up in a local PC. Note: User can set up same server via [[this instruction>>url:http://www.steves-internet-guide.com/install-mosquitto-broker/]].
265	265
	266	+
266	266	== 4.2 Simulate via MQTT.fx utility ==
267	267
268	268	The [[MQTT.fx>>url:http://mqttfx.jensd.de/index.php/download]] is a MQTT client tool. We can use this to simulate a MQTT connection to our MQTT broker first to make sure the MQTT broker works. This will also help us understand how it works.
...	...	@@ -271,16 +271,18 @@
271	271	In this test, the MQTT broker and MQTT.fx are installed in the same PC, so the MQTT server address in MQTT.fx should be localhost. Below shows how to connect to the server.
272	272	)))
273	273
274		-[[image:https://wiki.dragino.com/images/thumb/0/06/MQTT_Forward_4.png/600px-MQTT_Forward_4.png||height="201" width="600"]]
	275	+[[image:image-20220527134929-6.png]]
275	275
276	276	Connect to MQTT Broker
277	277
	279	+
278	278	After connected, use publish to public some thing to MQTT server. This to simulate upsteam
279	279
280		-[[image:https://wiki.dragino.com/images/thumb/b/bd/MQTT_Forward_5.png/600px-MQTT_Forward_5.png||height="149" width="600"]]
	282	+[[image:image-20220527135037-7.png]]
281	281
282	282	Upstream: Publish message to MQTT Broker
283	283
	286	+
284	284	To simulate a downstream, use MQTT.fx to subscribe a topic, and publish something to this topic. as Below:
285	285
286	286	[[image:https://wiki.dragino.com/images/thumb/3/3d/MQTT_Forward_6.png/600px-MQTT_Forward_6.png||height="279" width="600"]]

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