https://developers.weixin.qq.com/miniprogram/dev/framework/ability/mDNS.htmlhttps://developers.weixin.qq.com/miniprogram/dev/framework/ability/mDNS.html

手机连接设备WiFi后组成一个局域网，已经关闭数据流量，无法访问外网。

wx.connectSocket({
        url: `ws://192.168.5.1:58098`
      })
      wx.onSocketOpen(function (res) {
        console.log('WebSocket连接已打开！', res);
        
        const int8Array = new Int8Array([0x86, 0x06, 0x01])
        wx.sendSocketMessage({
          data: int8Array
        });
      });
      wx.onSocketMessage(function (res) {
        console.log(res);
        console.log(res.data);
      });
      wx.onSocketError(function (res) {
        console.log('onSocketError', res);
      });