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1		-**~ Contents:**
	1	+Contents:
2	2
3		-{{toc/}}
4	4
5		-
6	6	= 1. Introduction =
7	7
8	8	(((
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13	13	Below is the network structure. The end device use CoAP to connect our Emqx server via NB-IoT network. EMQ X broker will further process the data for the actually application.
14	14	)))
15	15
16		-[[image:image-20220530084843-1.png]]
	14	+[[image:https://wiki.dragino.com/images/thumb/2/25/CoAP_1.png/600px-CoAP_1.png||height="219" width="600"]]
17	17
18	18	Network structure
19	19
20		-
21	21	= 2. Install CoAP server =
22	22
23	23	Set up example in Ubuntu 18.04
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33	33	./bin/emqx_ctl plugins load emqx_coap # Run COAP service
34	34	)))
35	35
36		-(((
37	37	(% style="color:red" %)**Notice: CoAP default port use 5683, if you install EMQX in a cloud server, make sure you open the UDP port 5683. So can receive the packets from NB-IoT.**
38		-)))
39	39
40	40	= 3. Test CoAP Server =
41	41
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60	60
61	61	Install Copper APP
62	62
63		-[[image:https://wiki.dragino.com/images/thumb/7/70/CoAP_Test_3.png/687px-CoAP_Test_3.png||alt="File:CoAP Test 3.png"]]
	58	+[[image:https://wiki.dragino.com/images/thumb/7/70/CoAP_Test_3.png/600px-CoAP_Test_3.png||height="523" width="600"]]
64	64
65	65	Install APP Successful
66	66
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100	100
101	101	Connect to CoAP server
102	102
	98	+
103	103	== 3.3 Test CoAP Uplink ==
104	104
105	105	(((
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120	120
121	121	MQTT.fx get the update of this topic on CoAP server
122	122
	119	+
123	123	== 3.4 Test CoAP Downlink ==
124	124
125		-(((
126	126	Try to use MQTT.fx to publish a message to the topic (topic0) in the server. CoAP extension will see this incomming message.
127		-)))
	123	+
	124	+
	125	+Use MQTT.fx to publish the topic
	126	+
	127	+
	128	+CoAP extension see the incoming message

image-20220530084843-1.png

Author

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1		-XWiki.Xiaoling

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1		-57.1 KB

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