windows下的MQTT+Mosquitto+JavaScript

Question

我是新的在MQTT所以可以有人帮助我连接MQTT与蚊子使用javascript我正在使用这段代码，但它给错误······

<script type='text/javascript' src='jquery-1.10.1.js'></script>

<script type='text/javascript' src="mqttws31.js"></script>

    var client = new Messaging.Client("ns.testingindia.tld", 1883, "myclientid_" + parseInt(Math.random() * 100, 10));

     //Gets  called if the websocket/mqtt connection gets disconnected for any reason
     client.onConnectionLost = function (responseObject) {
         //Depending on your scenario you could implement a reconnect logic here
         alert("connection lost: " + responseObject.errorMessage);
     };

     //Gets called whenever you receive a message for your subscriptions
     client.onMessageArrived = function (message) {
         //Do something with the push message you received
         $('#messages').append('Topic: ' + message.destinationName + '  | ' + message.payloadString + '
');
     };

     //Connect Options
     var options = {
         timeout: 3,
         //Gets Called if the connection has sucessfully been established
         onSuccess: function () {
             alert("Connected");
         },
         //Gets Called if the connection could not be established
         onFailure: function (message) {

            document.write("Connection failed: " + message.errorMessage);
             alert("Connection failed: " + message.errorMessage);
         }
     };

     //Creates a new Messaging.Message Object and sends it to the HiveMQ MQTT Broker
     var publish = function (payload, topic, qos) {
         //Send your message (also possible to serialize it as JSON or protobuf or just use a string, no limitations)
         var message = new Messaging.Message(payload);
         message.destinationName = topic;
         message.qos = qos;
         client.send(message);
     }
    //]]>  

Answer 1

您正在连接到端口1883，这是默认的MQTT端口。我假设您的意思是使用Websockets，这通常是在不同的端口号上配置的。如果您使用的代理支持Websocket，请确保使用messaging.client()连接到正确的端口。

如果您使用的是Mosquitto代理，那么您需要bitbucket存储库中的1.4版本来支持Websocket，但是请注意，Mosquitto1.4还没有发布。