AWSUserPoolsSignIn refresh token iOS

Question

I am using the swift package AWSiOSSDKV2 from https://github.com/aws-amplify/aws-sdk-ios-spm

I can log in using the SDK but how can I use refresh Token to generate new accessToken using their SDK?

func login() {

        let pool = AWSCognitoIdentityUserPool(forKey: PortalUserConfig.POOL_NAME)

        if let user = pool?.getUser() {
            
            user.getSession(username, password: password, validationData: nil).continueWith(block: { task -> Any? in
                if let error = task.error {
                    let errorMessage = (error as NSError).userInfo["message"] as? String
                } else {
                    
                    guard let accessToken = task.result?.accessToken else {
                        return nil
                    }
                    print(accessToken)
                    let refreshToken = task.result?.refreshToken
                    print(refreshToken)
  
                }
                return nil
            })
        }
    }

Answer 1

The Amplify library will automatically fetch new id and access tokens if they have expired and the refresh token is still valid. You can adjust the lifetime of your refresh tokens in the settings for your User Pool client. To learn more about OAuth token lifetime strategies, you can read up on the options over at OAuth.com.