0
我正在使用socket.io,node.js和node.js MQTT客戶端連接到從HTMLS頁面在A-MQ上運行的代理。我可以成功連接到代理並訂閱我需要的主題,但我從來沒有從主題中收到任何消息,即使有幾個消息被排隊。未使用node.js MQTT客戶端收到的消息使用socket.io
這裏是我的代碼:
subscribe.js
var sys = require('sys');
var net = require('net');
var mqtt = require('mqtt');
var io = require('socket.io').listen(5000);
io.set('origins', '*:*');
var client = mqtt.connect("mqtt:admin:[email protected]//localhost:1883");
io.sockets.on('connection', function (socket) {
socket.on('subscribe', function (data) {
console.log('Subscribing to '+data.topic);
socket.join(data.topic);
client.subscribe(data.topic);
});
});
client.addListener('mqttData', function(topic, payload){
sys.puts(topic+'='+payload);
io.sockets.emit('mqtt',{'topic':String(topic),
'payload':String(payload)});
});
的index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8"/>
<title>IoT Demo</title>
<script type="text/javascript" src="js/jquery-1.8.3.js"></script>
<script type="text/javascript" src="js/socket.io.js"></script>
<script type="text/javascript">
var socket = io.connect('http://localhost:5000');
socket.on('connect', function() {
socket.on('mqtt', function (msg) {
var elmarr=msg.topic.split("/");
var elm=elmarr[3];
console.log(msg.topic+' '+msg.payload);
$('#'.concat(elm)).html(msg.payload);
});
socket.emit('subscribe',{topic:'customerenter'});
socket.emit('subscribe',{topic:'customermove'});
socket.emit('subscribe',{topic:'customerexit'});
});
</script>
</head>
<body>
<div style="position: absolute; top: 5px; left: 5px;">
</div>
</body>
</html>
當我在Chrome調試,
socket.on('mqtt', function (msg)
從不執行。
有什麼想法?
感謝, 特德
謝謝hardillb。我在另一篇文章中同時看到了你的答案。這是問題。 :) –