How can I implement authentication in React Native using refresh tokens?

How can I implement authentication in React Native using refresh tokens?

To implement authentication using refresh tokens in React Native, you can follow these steps: 1. Set up your backend to issue access and refresh tokens. 2. Store the tokens securely on the device using libraries like AsyncStorage or SecureStore. 3. Use the access token for API requests and handle token expiration by using the refresh token to obtain a new access token.

What libraries should I use for storing tokens?

You can use libraries like AsyncStorage for simple storage or SecureStore for more secure storage of tokens. SecureStore encrypts the data, making it safer.

How do I handle token expiration?

You can check the expiration time of the access token before making an API call. If it's expired, use the refresh token to request a new access token from your backend.

Can you provide a code example?

Sure! Here's a simple example:

const refreshAccessToken = async () => {
  const refreshToken = await AsyncStorage.getItem('refreshToken');
  const response = await fetch('https://yourapi.com/refresh', {
    method: 'POST',
    body: JSON.stringify({ refreshToken }),
    headers: { 'Content-Type': 'application/json' }
  });
  const data = await response.json();
  await AsyncStorage.setItem('accessToken', data.accessToken);
};

This function retrieves the refresh token and requests a new access token.