小程序webSocket

首先，微信小程序如果要使用WebSokect需要调用官方的API函数

SocketTask | 微信开放文档

demo：    

    var app = getApp();
    const that = this;
    wx.connectSocket({
      url: 'wss://地址',
      header: { 'content-type': 'application/json' },
      success(res) {
        app.connecting = true;
      },
    })
    wx.onSocketOpen(function (res) {
      wx.sendSocketMessage({
        data: 入参
      })
      console.log('webSocket已链接')
    })
    wx.onSocketMessage(function (res) {
      console.log(res.data, '收到服务器内容')
      that.setData({ matchDesc: that.data.matchDesc + res.data })
    })
    console.log(this.data.matchDesc, 'matchDesc')