如何在React Native中保持套接字连接在后台处于活动状态？

import { AppState } from 'react-native';
import SocketIOClient from 'socket.io-client';

class App extends Component {
  constructor(props) {
    super(props);
    this.socket = null;
    this.state = {
      appState: AppState.currentState,
    };
  }

  componentDidMount() {
    AppState.addEventListener('change', this.handleAppStateChange);
    this.connectSocket();
  }

  componentWillUnmount() {
    AppState.removeEventListener('change', this.handleAppStateChange);
    this.disconnectSocket();
  }

  handleAppStateChange = (nextAppState) => {
    if (
      this.state.appState.match(/inactive|background/) &&
      nextAppState === 'active'
    ) {
      this.connectSocket();
    } else if (
      this.state.appState === 'active' &&
      nextAppState.match(/inactive|background/)
    ) {
      this.disconnectSocket();
    }
    this.setState({ appState: nextAppState });
  };

  connectSocket = () => {
    this.socket = SocketIOClient('your_socket_server_url');
    // 发送心跳包或保持连接的消息
    this.socket.on('connect', () => {
      this.socket.emit('keepAlive');
    });
  };

  disconnectSocket = () => {
    if (this.socket) {
      this.socket.disconnect();
    }
  };

  render() {
    // 渲染应用程序界面
  }
}

export default App;