Mqtt.js 的WSS链接

<script>
        var mid="866714041240721";
        $(document).ready(function(){
             $("#mid").val(mid);
        });
        var hostname = 'appylgv.iot.gz.baidubce.com',
            port = '443',
            clientId = 'MQ_WEB'+Math.floor(Math.random() * 5 + 1),
            timeout = 5,
            keepAlive = 100,
            cleanSession = false,
            ssl = true,
            userName = '用户名',  
            password = '密码',  
            topic = '订阅的topic';
        client = new Paho.MQTT.Client(hostname, Number(port), clientId);
        //建立客户端实例  
        var options = {
            invocationContext: {
                host: hostname,
                port: port,
                path: client.path,
                clientId: clientId
            },
            timeout: timeout,
            keepAliveInterval: keepAlive,
            cleanSession: cleanSession,
            useSSL: ssl,//wss传输
            userName: userName,  
            password: password,  
            onSuccess: onConnect,
            mqttVersion: 4,
            onFailure: function (e) {
                console.log(e);
                s = "{time:" + new Date().Format("yyyy-MM-dd hh:mm:ss") + ", onFailure()}";
                console.log(s);
            }
        };
        client.connect(options);
        //连接服务器并注册连接成功处理事件  
        function onConnect() {
            console.log("onConnected");
            s = "{time:" + new Date().Format("yyyy-MM-dd hh:mm:ss") + ", onConnected()}";
            console.log(s);         
            client.subscribe(topic);
        }

        client.onConnectionLost = onConnectionLost;

        //注册连接断开处理事件  
        client.onMessageArrived = onMessageArrived;

        //注册消息接收处理事件  
        function onConnectionLost(responseObject) {
            console.log(responseObject);
            s = "{time:" + new Date().Format("yyyy-MM-dd hh:mm:ss") + ", onConnectionLost()}";
            console.log(s);
            if (responseObject.errorCode !== 0) {
                alert(userName + "连接已断开"+s);
                console.log("onConnectionLost:" + responseObject.errorMessage);
                console.log("连接已断开");
            }
        }

        function onMessageArrived(message) {
            s = "{time:" + new Date().Format("yyyy-MM-dd hh:mm:ss") + ", onMessageArrived()}";
          
            $("#txt_log").val($("#txt_log").val()+"收到消息:" + message.payloadString+"\n");       
            console.log(s);
            console.log("收到消息:" + message.payloadString);
            var scrollTop = $("#txt_log")[0].scrollHeight;
            $("#txt_log").scrollTop(scrollTop);
        }

     function send() {//发送信息
            var s = document.getElementById("msg").value;
            if (s) {
                s = "{\"Spare\":\"0\",\"IMEI\":\""+ clientId +"\",\"Timestamp\":\"" + new Date().Format("yyyy-MM-dd hh:mm:ss") + "\",\"DATA\":\"" + (s) + "\",\"API\":\"1111\"}";
                message = new Paho.MQTT.Message(s);
                message.destinationName =topic;
                client.send(message);
              
                document.getElementById("msg").value = "";
            }
        }

        var count = 0;

        function start() {
            window.tester = window.setInterval(function () {
                if (client.isConnected) {
                    var s = "{time:" + new Date().Format("yyyy-MM-dd hh:mm:ss") + ", content:" + (count++) +", from: web console}";
                    message = new Paho.MQTT.Message(s);
                    message.destinationName = topic;
                    client.send(message);
                }
            }, 1000);
        }

        function stop() {
            
            window.clearInterval(window.tester);
        }

        Date.prototype.Format = function (fmt) { //author: meizz 
            var o = {
                "M+": this.getMonth() + 1, //月份 
                "d+": this.getDate(), //日 
                "h+": this.getHours(), //小时 
                "m+": this.getMinutes(), //分 
                "s+": this.getSeconds(), //秒 
                "q+": Math.floor((this.getMonth() + 3) / 3), //季度 
                "S": this.getMilliseconds() //毫秒 
            };
            if (/(y+)/.test(fmt)) fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
            for (var k in o)
                if (new RegExp("(" + k + ")").test(fmt)) fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[
                    k]) : (("00" + o[k]).substr(("" + o[k]).length)));
            return fmt;
        }
    </script>