微信小程序使用Socket的实例

const io = require('../utils/io.js')
let url = 'wss://......'
let wsStatus = false
let onSocket = null
export const connect = function(cb){
  if(!onSocket){
    onSocket = io(url)
    onSocket.on('connect', function (res) {
      cb(true,onSocket)
      wsStatus = true
    })
    setTimeout(function(){
      if(!wsStatus){
        cb(false,onSocket)
      }
    },10000)
  }else{
    cb(true,onSocket)
  }
}

let openSocket = require('../../config/socket')
let app = getApp()
let socket = null
Page({
data: {
  zl: [[422, 400, 468, 834, 785, 446, 845, 517, 630, 797, 890, 529, 553, 425, 469, 470, 837, 841, 521, 525], [422, 400, 468, 834, 785, 446, 845, 517, 630, 797, 890, 529, 553, 425, 469, 470, 837, 841, 521, 525]]
},
onLoad: function () {
  let that = this;
  //socket调用
  openSocket.connect(function (status, ws) {
    if (status) {
      socket = ws
      this.subscribe('zl')//对封装好对订阅方法进行调用
      socket.on('broadcast', function (msg) {//广播
        console.log("broadcast");
        console.log(msg);
      })
    } else {
      alert("socket 连接失败")
    }
  });
},
subscribe: function (type) {
  if (socket) {
    let eis = this.data[type]
    if (eis && eis.length > 0) {
      let param = {//仅供参考，根据接口自行更改
        eis: eis.join(',')
      }
      socket.emit('subscribe', JSON.stringify(param));
    }
  }
}
});