Changes for page Set up CoAP Server
Last modified by Xiaoling on 2022/07/27 18:05
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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 ))) ... ... @@ -11,6 +11,8 @@ 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 16 [[image:image-20220530084843-1.png]] ... ... @@ -18,8 +18,10 @@ 18 18 Network structure 19 19 20 20 21 -= 2. Install CoAP server = 22 22 26 += 2. Install CoAP server = 27 + 28 + 23 23 Set up example in Ubuntu 18.04 24 24 25 25 (% class="box" %) ... ... @@ -36,6 +36,7 @@ 36 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 38 45 + 39 39 40 40 ))) 41 41 ... ... @@ -43,6 +43,7 @@ 43 43 44 44 == 3.1 Install Copper in Chrome == 45 45 53 + 46 46 ((( 47 47 ~1. Download Copper4Cr from [[https:~~/~~/github.com/mkovatsc/Copper4Cr>>url:https://github.com/mkovatsc/Copper4Cr]] and unpack it. 48 48 ))) ... ... @@ -50,6 +50,7 @@ 50 50 ((( 51 51 2. Run install.bat in the directory. 52 52 61 + 53 53 [[image:image-20220530085327-2.png]] 54 54 ))) 55 55 ... ... @@ -56,18 +56,21 @@ 56 56 Run install.bat 57 57 58 58 68 + 59 59 3. Load the unpacked CoAP APP in Google Chrome: 60 60 61 -[[image:image-20220530085423-3.png]] 71 +[[image:image-20220530085423-3.png||height="241" width="1250"]] 62 62 63 63 Install Copper APP 64 64 65 65 76 + 66 66 [[image:image-20220530085531-4.png]] 67 67 68 68 Install APP Successful 69 69 70 70 82 + 71 71 4. Load the unpacked CoAP extension in Google Chrome: 72 72 73 73 [[image:image-20220530085638-5.png||height="338" width="1320"]] ... ... @@ -75,11 +75,12 @@ 75 75 Install Copper Extension 76 76 77 77 78 -[[image:image-20220530090104-7.png]] 90 +[[image:image-20220530090104-7.png||height="389" width="1282"]] 79 79 80 80 Install Extension Successful 81 81 82 82 95 + 83 83 5. Replace the appID in file extension\endpoint\ClientPortChrome.js to Copper (Cu4Cr) Application ID 84 84 85 85 [[image:image-20220530090444-10.png]] ... ... @@ -87,6 +87,7 @@ 87 87 Replace ID 88 88 89 89 103 + 90 90 6. Open the Copper extension. If you see below message, means install successfully. 91 91 92 92 [[image:image-20220530090404-9.png||height="658" width="1238"]] ... ... @@ -94,11 +94,14 @@ 94 94 Install Finished 95 95 96 96 97 -== 3.2 Test CoAP connection == 98 98 112 +== 3.2 Test CoAP connection == 113 + 114 + 99 99 ((( 100 100 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. 101 101 118 + 102 102 [[image:image-20220530090848-13.png||height="616" width="1154"]] 103 103 ))) 104 104 ... ... @@ -105,11 +105,14 @@ 105 105 Connect to CoAP server 106 106 107 107 108 -== 3.3 Test CoAP Uplink == 109 109 126 +== 3.3 Test CoAP Uplink == 127 + 128 + 110 110 ((( 111 111 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. 112 112 132 + 113 113 [[image:image-20220530090939-14.png]] 114 114 ))) 115 115 ... ... @@ -116,18 +116,22 @@ 116 116 Use MQTT.fx to subscribe the topic 117 117 118 118 139 + 119 119 [[image:image-20220530091358-18.png||height="549" width="1035"]] 120 120 121 121 Use CoAP Exension to send a update to CoAP server 122 122 123 123 145 + 124 124 [[image:image-20220530091237-17.png]] 125 125 126 126 MQTT.fx get the update of this topic on CoAP server 127 127 128 128 129 -== 3.4 Test CoAP Downlink == 130 130 152 +== 3.4 Test CoAP Downlink == 153 + 154 + 131 131 ((( 132 132 Try to use MQTT.fx to publish a message to the topic (topic0) in the server. CoAP extension will see this incomming message. 133 133 )))