appservice?t=1533630357896:1032 WebSocket connection to 'wss://36.41.188.53/mqtt' failed: Error in connection establishment: net::ERR_CONNECTION_TIMED_OUT 我在微信小程序中是用mqtt协议，通过nginx代理监听443端口，在本地测试通过，但是在连接服务器是报上述异常，可以ping通ip,telnet也可以连接服务器也正常，MQ使用的是emqttd,恳请各位大佬指点。 // pages/connect/connect.js var app = getApp(); var MQTT = require("../../utils/paho-mqtt.js"); Page({ /**     * 页面的初始数据     */ data: { server_addr: '36.41.188.53', user_name: "test", user_psw: ['1','2','3','4','5','6','7','8','9'], error_message: '', switch_checked: false, btn_loading: false }, server_addr_input: function(e) { //console.log(e); this.setData({ server_addr: e.detail.value }); }, user_name_input: function(e) { //console.log(e); this.setData({ user_name: e.detail.value }); }, user_psw_input: function(e) { //console.log(e); this.setData({ user_psw: e.detail.value }); }, switch_change: function(e) { //console.log(e); this.setData({ switch_checked: e.detail.value }); }, btn_connect: function() { //查看输入是否为空，设置错误信息 if (this.data.server_addr == '' || this.data.server_addr == null) { this.setData({ error_message: "server address can not be empty!" }); return; } if (this.data.switch_checked) { if (this.data.user_name == null || this.data.user_name == '') { this.setData({ error_message: "user name can not be empty!" }); return; } if (this.data.user_psw == null || this.data.user_psw == '') { this.setData({ error_message: "user password can not be empty!" }); return; } } //reset error message if (this.data.error_message) { this.setData({ error_message: '' }); } //在按钮上显示加载标志 this.setData({ btn_loading: true }); var client = new MQTT.Client("ws://" + this.data.server_addr + "/mqtt", "mqttjs" + Math.random().toString(36).substr(2)); var that = this; //connect to  MQTT broker var connectOptions = { timeout: 10, useSSL: true, cleanSession: true, keepAliveInterval: 30, reconnect: true, userName: "test", password: "123456789", onSuccess: function() { console.log('connected'); app.globalData.mqtt_client = client; client.onMessageArrived = function(msg) { if (app.globalData.messages != null) { app.globalData.messages = [{ topic: msg.topic, humidity: msg.payloadString.toString().substr(6, 2), temperature: msg.payloadString.toString().substr(15, 2), doorLock: msg.payloadString.toString().substr(24, 1), socket: msg.payloadString.toString().substr(32, 1), }].concat(app.globalData.messages); } } client.onConnectionLost = function(responseObject) { if (typeof app.globalData.onConnectionLost === 'function') { return app.globalData.onConnectionLost(responseObject); } if (responseObject.errorCode !== 0) { console.log("onConnectionLost:" + responseObject.errorMessage); } } //去除按钮上的加载标志 that.setData({ btn_loading: false }); wx.switchTab({ url: '../subscribe/subscribe', }); }, onFailure: function(option) { console.log(option); //去除按钮上的加载标志 that.setData({ btn_loading: false }); wx.showModal({ //title: msg.destinationName, content: option.errorMessage }); } }; if (this.data.switch_checked) { connectOptions.userName = this.data.user_name; connectOptions.password = this.data.user_psw; } client.connect( ); }, /**     * 生命周期函数--监听页面加载     */ onLoad: function(options) { }, /**     * 生命周期函数--监听页面初次渲染完成     */ onReady: function() { }, /**     * 生命周期函数--监听页面显示     */ onShow: function() { if (app.globalData.mqtt_client != null) { wx.reLaunch({ url: '../subscribe/subscribe', }); return; } } })