I'm trying to follow this tutorial to authenticate with Google using their OAuth 2.0 API. However, I would like to make straight curl
calls rather than use their libraries.
I have obtained my Client ID and Client Secret Key.
Now I'm trying to get the access token like this:
curl \
--request POST \
--header "Content-Type: application/json" \
--data '{
"client_id":"MY_CLIENT_ID",
"client_secret":"MY_SECRET_KEY",
"redirect_uri": "http://localhost/etc",
"grant_type":"authorization_code"
}' \
"https://accounts.google.com/o/oauth2/token"
However, it is not working. It gives me the following error:
{
"error" : "invalid_request",
"error_description" : "Required parameter is missing: grant_type"
}
Can someone please provide me sample curl call to obtain the access token (and refresh token)?
Best Answer
a) the data you provide should be form-encoded instead of presented as a JSON object and b) you should also provide an authorization code value in the "code" parameter. E.g.: