Changes for page Set up CoAP Server

Last modified by Xiaoling on 2024/08/19 16:01
From version 1.1 >
edited by Xiaoling
on 2022/05/17 14:32
To version < 4.1 >
edited by Xiaoling
on 2022/05/30 08:54
>
Change comment: Uploaded new attachment "image-20220530085423-3.png", version {1}

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1 -{{box cssClass="floatinginfobox" title="**Contents**"}}
1 +**~ Contents:**
2 +
2 2  {{toc/}}
3 -{{/box}}
4 4  
5 -= Paragraph 1 =
6 6  
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6 += 1. Introduction =
8 8  
9 -== Sub-paragraph ==
8 +(((
9 +In this chapter, we set up a CoAP/ MQTT server by using Open Source MQTT Broker : [[EMQX.IO>>url:https://www.emqx.io/]]. And show how to communicate it with CoAP and MQTT.
10 +)))
10 10  
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12 +(((
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 +)))
12 12  
13 -== Sub-paragraph ==
16 +[[image:image-20220530084843-1.png]]
14 14  
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18 +Network structure
16 16  
17 -=== Sub-sub paragraph ===
18 18  
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21 += 2. Install CoAP server =
20 20  
23 +Set up example in Ubuntu 18.04
21 21  
22 -= Paragraph 2 =
25 +(% class="box" %)
26 +(((
27 +sudo apt-get update
28 +sudo apt-get upgrade
29 +wget [[https:~~/~~/www.emqx.io/downloads/broker/v3.2.7/emqx-ubuntu18.04-v3.2.7_amd64.deb>>url:https://www.emqx.io/downloads/broker/v3.2.7/emqx-ubuntu18.04-v3.2.7_amd64.deb]]  #download the installation package.
30 +sudo dpkg –i emqx-ubuntu18.04-v3.2.4_amd64.deb  #install EMQX
31 +emqx start            # Start EMQX service
32 +emqx_ctl status   #check if EMQX is running
33 +./bin/emqx_ctl plugins load emqx_coap # Run COAP service
34 +)))
23 23  
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36 +(((
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 +)))
25 25  
26 -== Sub-paragraph ==
40 += 3. Test CoAP Server =
27 27  
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42 +== 3.1 Install Copper in Chrome ==
29 29  
30 -== Sub-paragraph ==
44 +(((
45 +~1. Download Copper4Cr from [[https:~~/~~/github.com/mkovatsc/Copper4Cr>>url:https://github.com/mkovatsc/Copper4Cr]] and unpack it.
46 +)))
31 31  
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48 +(((
49 +2. Run install.bat in the directory.
50 +)))
51 +
52 +[[image:https://wiki.dragino.com/images/thumb/4/47/CoAP_Test_1.png/600px-CoAP_Test_1.png||height="191" width="600"]]
53 +
54 +Run install.bat
55 +
56 +
57 +3. Load the unpacked CoAP APP in Google Chrome:
58 +
59 +[[image:https://wiki.dragino.com/images/thumb/8/8b/CoAP_Test_2.png/600px-CoAP_Test_2.png||height="114" width="600"]]
60 +
61 +Install Copper APP
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"]]
64 +
65 +Install APP Successful
66 +
67 +
68 +4. Load the unpacked CoAP extension in Google Chrome:
69 +
70 +[[image:https://wiki.dragino.com/images/thumb/6/65/CoAP_Test_4.png/600px-CoAP_Test_4.png||height="154" width="600"]]
71 +
72 +Install Copper Extension
73 +
74 +[[image:https://wiki.dragino.com/images/thumb/9/99/CoAP_Test_5.png/600px-CoAP_Test_5.png||height="183" width="600"]]
75 +
76 +Install Extension Successful
77 +
78 +
79 +5. Replace the appID in file extension\endpoint\ClientPortChrome.js to Copper (Cu4Cr) Application ID
80 +
81 +[[image:https://wiki.dragino.com/images/thumb/7/7e/CoAP_Test_6.png/600px-CoAP_Test_6.png||height="301" width="600"]]
82 +
83 +Replace ID
84 +
85 +
86 +6. Open the Copper extension. If you see below message, means install successfully.
87 +
88 +[[image:https://wiki.dragino.com/images/thumb/b/b1/CoAP_Test_7.png/600px-CoAP_Test_7.png||height="323" width="600"]]
89 +
90 +Install Finished
91 +
92 +
93 +== 3.2 Test CoAP connection ==
94 +
95 +(((
96 +Use Chrome Copper externsion to connect to the CoAP server. Input coap:~/~/COAP_SERVER_IP/mqtt/topic0?c=t1 to connect to the MQTT topic0 in CoAP server. Replace COAP_SERVER_IP with your COAP Server IP address, and refer [[here>>url:https://github.com/emqx/emqx-coap]] for the CoAP detail in EMQX. When connection ok, you can see below window.
97 +)))
98 +
99 +[[image:https://wiki.dragino.com/images/thumb/0/0c/CoAP_Test_8.png/600px-CoAP_Test_8.png||height="323" width="600"]]
100 +
101 +Connect to CoAP server
102 +
103 +== 3.3 Test CoAP Uplink ==
104 +
105 +(((
106 +Try to use MQTT.fx to subscribe a the topic (topic0) in the server. And use CoAP to send a message to this topic, we can see the message arrive the topic0 and shown in MQTT.fx.
107 +)))
108 +
109 +[[image:https://wiki.dragino.com/images/thumb/b/b0/CoAP_Test_9.png/600px-CoAP_Test_9.png||height="429" width="600"]]
110 +
111 +Use MQTT.fx to subscribe the topic
112 +
113 +
114 +[[image:https://wiki.dragino.com/images/thumb/3/39/CoAP_Test_10.png/600px-CoAP_Test_10.png||height="323" width="600"]]
115 +
116 +Use CoAP Exension to send a update to CoAP server
117 +
118 +
119 +[[image:https://wiki.dragino.com/images/thumb/f/fe/CoAP_Test_11.png/600px-CoAP_Test_11.png||height="386" width="600"]]
120 +
121 +MQTT.fx get the update of this topic on CoAP server
122 +
123 +== 3.4 Test CoAP Downlink ==
124 +
125 +(((
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 +)))
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