浏览器使用 MQTT.js 的方法
MQTT.js 仓库地址
也可以使用 cdn 引入浏览器https://unpkg.com/mqtt/dist/mqtt.min.js
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>MQTT</title>
<script src="./js/mqtt.js"></script>
</head>
<body>
</body>
<script>
const clientId = 'mqttjs_' + Math.random().toString(16).substr(2, 8)
const host = 'ws://test.mosquitto.org:8080'
const options = {
keepalive: 30,
clientId: clientId,
protocolId: 'MQTT',
protocolVersion: 4,
clean: true,
reconnectPeriod: 1000,
connectTimeout: 30 * 1000,
will: {
topic: 'WillMsg',
payload: 'Connection Closed abnormally..!',
qos: 0,
retain: false
},
rejectUnauthorized: false
}
console.log('connecting mqtt client')
const client = mqtt.connect(host, options)
client.on('error', function (err) {
console.log(err)
client.end()
})
client.on('connect', function () {
console.log('client connected:' + clientId)
client.subscribe('topic', { qos: 0 })
client.publish('topic', 'wss secure connection demo...!', { qos: 0, retain: false })
})
client.on('message', function (topic, message, packet) {
console.log('Received Message:= ' + message.toString() + '\nOn topic:= ' + topic)
})
client.on('close', function () {
console.log(clientId + ' disconnected')
})
</script>
</html>
本文作者：博麗靈夢
本文链接：https://www.cnblogs.com/Hakurei-Reimu-Zh/p/16322834.html
版权声明：本作品采用知识共享署名-非商业性使用-禁止演绎 2.5 中国大陆许可协议进行许可。
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