vergissberlin /
mqtt-resource
| Total Complexity | 5 |
| Complexity/F | 1.67 |
| Lines of Code | 45 |
| Function Count | 3 |
| Duplicated Lines | 0 |
| Ratio | 0 % |
| Changes | 0 | ||
| 1 | // https://github.com/mqttjs/MQTT.js/issues/647 |
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| 3 | let mqtt = require('mqtt') |
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| 4 | |||
| 5 | let username = 'test', |
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| 6 | password = 'test', |
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| 7 | url = 'mqtt://0.0.0.0', |
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| 8 | port = 1883, |
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| 9 | topic = 'test' |
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| 10 | |||
| 11 | |||
| 12 | let options = { |
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| 13 | username: username, |
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| 14 | password: password, |
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| 15 | port: port, |
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| 16 | clientId: 'mqtt-listen', |
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| 17 | clean: true, |
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| 18 | will: { |
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| 19 | topic: 'device', |
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| 20 | payload: 'pipeline' |
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| 21 | } |
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| 22 | } |
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| 23 | |||
| 24 | let client = mqtt.connect(url, options) |
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| 25 | |||
| 26 | client.on('connect', function (connection) { |
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| 27 | console.log('connection.sessionPresent:', connection.sessionPresent) |
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Debugging Code
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| 28 | client.subscribe(topic, {}, function (error, granted) { |
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| 29 | if (error) { |
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| 30 | return console.error |
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| 31 | } |
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| 32 | console.log(`Subscribed "${ topic }"`, granted) |
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| 33 | }) |
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| 34 | |||
| 35 | }) |
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| 36 | |||
| 37 | client.on('message', function (topic, message) { |
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| 38 | console.log('Last id: ' + client.getLastMessageId()) |
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| 39 | if (message.toString() !== 'none') { |
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| 40 | console.log(message.toString()) |
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| 41 | // Delete the retained message |
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| 42 | client.publish(topic, 'none', {retain: true}) |
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| 43 | } else { |
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| 44 | console.log('No message available') |
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| 45 | } |
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| 46 | client.end() |
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| 47 | }) |
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| 48 | |||
| 50 |
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