Changes for page Set up CoAP Server
Last modified by Xiaoling on 2024/08/19 16:01
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... ... @@ -1,10 +1,12 @@ 1 -**~ Contents:** 1 +**~ Table of Contents:** 2 2 3 3 {{toc/}} 4 4 5 5 6 -= 1. Introduction = 7 7 7 += 1. Introduction = 8 + 9 + 8 8 ((( 9 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 ))) ... ... @@ -11,14 +11,19 @@ 11 11 12 12 ((( 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. 16 + 17 + 14 14 ))) 15 15 16 -[[image: https://wiki.dragino.com/images/thumb/2/25/CoAP_1.png/600px-CoAP_1.png||height="219" width="600"]]20 +[[image:image-20220530084843-1.png]] 17 17 18 18 Network structure 19 19 20 -= 2. Install CoAP server = 21 21 25 + 26 += 2. Install CoAP server = 27 + 28 + 22 22 Set up example in Ubuntu 18.04 23 23 24 24 (% class="box" %) ... ... @@ -32,12 +32,18 @@ 32 32 ./bin/emqx_ctl plugins load emqx_coap # Run COAP service 33 33 ))) 34 34 42 +((( 35 35 (% 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.** 36 36 45 + 46 + 47 +))) 48 + 37 37 = 3. Test CoAP Server = 38 38 39 39 == 3.1 Install Copper in Chrome == 40 40 53 + 41 41 ((( 42 42 ~1. Download Copper4Cr from [[https:~~/~~/github.com/mkovatsc/Copper4Cr>>url:https://github.com/mkovatsc/Copper4Cr]] and unpack it. 43 43 ))) ... ... @@ -44,89 +44,101 @@ 44 44 45 45 ((( 46 46 2. Run install.bat in the directory. 47 -))) 48 48 49 -[[image:https://wiki.dragino.com/images/thumb/4/47/CoAP_Test_1.png/600px-CoAP_Test_1.png||height="191" width="600"]] 50 50 62 +[[image:image-20220530085327-2.png]] 63 +))) 64 + 51 51 Run install.bat 52 52 53 53 68 + 54 54 3. Load the unpacked CoAP APP in Google Chrome: 55 55 56 -[[image: https://wiki.dragino.com/images/thumb/8/8b/CoAP_Test_2.png/600px-CoAP_Test_2.png||height="114" width="600"]]71 +[[image:image-20220530085423-3.png||height="241" width="1250"]] 57 57 58 58 Install Copper APP 59 59 60 -[[image:https://wiki.dragino.com/images/thumb/7/70/CoAP_Test_3.png/600px-CoAP_Test_3.png||height="523" width="600"]] 61 61 76 + 77 +[[image:image-20220530085531-4.png]] 78 + 62 62 Install APP Successful 63 63 64 64 82 + 65 65 4. Load the unpacked CoAP extension in Google Chrome: 66 66 67 -[[image: https://wiki.dragino.com/images/thumb/6/65/CoAP_Test_4.png/600px-CoAP_Test_4.png||height="154" width="600"]]85 +[[image:image-20220530085638-5.png||height="338" width="1320"]] 68 68 69 69 Install Copper Extension 70 70 71 -[[image:https://wiki.dragino.com/images/thumb/9/99/CoAP_Test_5.png/600px-CoAP_Test_5.png||height="183" width="600"]] 72 72 90 +[[image:image-20220530090104-7.png||height="389" width="1282"]] 91 + 73 73 Install Extension Successful 74 74 75 75 95 + 76 76 5. Replace the appID in file extension\endpoint\ClientPortChrome.js to Copper (Cu4Cr) Application ID 77 77 78 -[[image: https://wiki.dragino.com/images/thumb/7/7e/CoAP_Test_6.png/600px-CoAP_Test_6.png||height="301" width="600"]]98 +[[image:image-20220530090444-10.png]] 79 79 80 80 Replace ID 81 81 82 82 103 + 83 83 6. Open the Copper extension. If you see below message, means install successfully. 84 84 85 -[[image: https://wiki.dragino.com/images/thumb/b/b1/CoAP_Test_7.png/600px-CoAP_Test_7.png||height="323" width="600"]]106 +[[image:image-20220530090404-9.png||height="658" width="1238"]] 86 86 87 87 Install Finished 88 88 89 89 90 -== 3.2 Test CoAP connection == 91 91 112 +== 3.2 Test CoAP connection == 113 + 114 + 92 92 ((( 93 93 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. 94 -))) 95 95 96 -[[image:https://wiki.dragino.com/images/thumb/0/0c/CoAP_Test_8.png/600px-CoAP_Test_8.png||height="323" width="600"]] 97 97 119 +[[image:image-20220530090848-13.png||height="616" width="1154"]] 120 +))) 121 + 98 98 Connect to CoAP server 99 99 100 100 101 -== 3.3 Test CoAP Uplink == 102 102 126 +== 3.3 Test CoAP Uplink == 127 + 128 + 103 103 ((( 104 104 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. 105 -))) 106 106 107 -[[image:https://wiki.dragino.com/images/thumb/b/b0/CoAP_Test_9.png/600px-CoAP_Test_9.png||height="429" width="600"]] 108 108 133 +[[image:image-20220530090939-14.png]] 134 +))) 135 + 109 109 Use MQTT.fx to subscribe the topic 110 110 111 111 112 -[[image:https://wiki.dragino.com/images/thumb/3/39/CoAP_Test_10.png/600px-CoAP_Test_10.png||height="323" width="600"]] 113 113 140 +[[image:image-20220530091358-18.png||height="549" width="1035"]] 141 + 114 114 Use CoAP Exension to send a update to CoAP server 115 115 116 116 117 -[[image:https://wiki.dragino.com/images/thumb/f/fe/CoAP_Test_11.png/600px-CoAP_Test_11.png||height="386" width="600"]] 118 118 146 +[[image:image-20220530091237-17.png]] 147 + 119 119 MQTT.fx get the update of this topic on CoAP server 120 120 121 121 122 -== 3.4 Test CoAP Downlink == 123 123 152 +== 3.4 Test CoAP Downlink == 153 + 154 + 124 124 ((( 125 125 Try to use MQTT.fx to publish a message to the topic (topic0) in the server. CoAP extension will see this incomming message. 126 126 ))) 127 - 128 - 129 -Use MQTT.fx to publish the topic 130 - 131 - 132 -CoAP extension see the incoming message
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