javascript - 无法使用 Google Web-blutetooth API 连接到设备的 GATT 服务器

Question

我正在尝试使用 Google 的网络蓝牙 API 打印我的 RealME-1 手机的所有特征。代码如下：

 navigator.bluetooth.requestDevice(options)
  .then(device => {
    log('> Name:             ' + device.name);
    log('> Id:               ' + device.id);
    log('> Connected:        ' + device.gatt.connected);
    log('>device '+device);

   return device.gatt.connect();
  })
  .then(server => {
    log('Getting Service...');
    return server.getPrimaryService(serviceUuid);
  })
  .then(service => {
    log('Getting Characteristic...');
    return service.getCharacteristic(characteristicUuid);
  })
  .then(characteristic => {
    log('> Characteristic UUID:  ' + characteristic.uuid);
    log('> Broadcast:            ' + characteristic.properties.broadcast);
    log('> Read:                 ' + characteristic.properties.read);
    log('> Write w/o response:   ' +
      characteristic.properties.writeWithoutResponse);
    log('> Write:                ' + characteristic.properties.write);
    log('> Notify:               ' + characteristic.properties.notify);
    log('> Indicate:             ' + characteristic.properties.indicate);
    log('> Signed Write:         ' +
      characteristic.properties.authenticatedSignedWrites);
    log('> Queued Write:         ' + characteristic.properties.reliableWrite);
    log('> Writable Auxiliaries: ' +
      characteristic.properties.writableAuxiliaries);
  })
  .catch(error => {
    log('Argh! ' + error);
  });

但是，在测试时，它会卡在 device.gatt.connect() 上。有什么我想念的地方吗？

谢谢