Is it possible to get accessToken through refreshToken?

[bytrix]

Is it possible to get accessToken through refreshToken?

[bytrix]

I have a problem, if someone already login at his client, and then he send me a refreshToken, how can I get accessToken with this refreshToken?

[bytrix]

As Amazon docs mentions, to retrieve a new access token, just pass the refresh token:
https://advertising.amazon.com/API/docs/en-us/get-started/generate-api-tokens

curl \
    -X POST \
    -H "Content-Type:application/x-www-form-urlencoded;charset=UTF-8" \
    --data "grant_type=refresh_token&client_id=YOUR_CLIENT_ID&refresh_token=YOUR_REFRESH_TOKEN&client_secret=YOUR_CLIENT_SECRET" \
    https://api.amazon.com/auth/o2/token

[moltar]

HttpClientAuth only provides accessToken but there is no refreshToken

That's correct. Because HttpClientAuth is only concerned with making authorized calls to the API. And to make an authorised call to the API it does not need a refresh token, and only an access token.

how can I get accessToken with refreshToken?

As Amazon docs mentions, to retrieve a new access token, just pass the refresh token:

Yeah, you can just do that with any HTTP client library.