How to use the code returned from Cognito to get AWS credentials?

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Right now, I’m struggling to understand AWS Cognito so maybe someone could help me out. I set a domain to serve Cognito’s hosted UI for my User Pool like what’s described here. So when I go to https://<my-domain>.auth.us-east-1.amazoncognito.com/login?response_type=code&client_id=<MY_POOL_CLIENT_ID>&redirect_uri=https://localhost:8080 I get a login page where my users can login to my app with Google. That part is working great.

I confused about what to do with the code that is returned from that page once my user logs in. So once I get redirected to Google and authorize the application to view my information, I get redirected back to one of my URLs with a code in the query params. Right now I’m redirecting to localhost, so the redirect URL look like this:

https://localhost:8080/?code=XXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXX

What exactly is this code? Also, how do I use it to get access to AWS resources for my user?

Answer

you can find the “Authorization code grant” in the doc :http://docs.aws.amazon.com/cognito/latest/developerguide/cognito-user-pools-app-idp-settings.html



Source: stackoverflow