tw.get_access_token not working

[gorodscy]

Calling this method gives me back an error:

OAuth2::Error - unauthorized: Full authentication is required to access this resource
{"error":"unauthorized","error_description":"Full authentication is required to access this resource"}

I'm using it like described in the README:

tw = TransferWise::OAuth.new(transferwise_client_id, transferwise_client_secret)

...
# got the code PS: I made sure I'm using the same redirect_url
...

token = tw.get_access_token(code, transferwise_redirect_url)

Please let me know if there's any other information you need.

[gorodscy]

for reference, using Net::HTTP it worked:

uri = URI.parse("https://test-api.transferwise.com/oauth/token")
      request = Net::HTTP::Post.new(uri)
      request.basic_auth(transferwise_client_id, transferwise_client_secret)
      request.body = "grant_type=authorization_code&client_id=#{transferwise_client_id}&code=#{code}&redirect_uri=#{redirect_url}"

      req_options = {
        use_ssl: uri.scheme == "https",
      }

      response = Net::HTTP.start(uri.hostname, uri.port, req_options) do |http|
        http.request(request)
      end
      token = JSON.parse(response.body)

[gorodscy]

I solved the issue. My oauth2 gem was on version 0.6.1
upgraded to version 1.4.0 fixed this issue.
However, the gemspec still allows it:

spec.add_runtime_dependency("oauth2".freeze, ["< 2.0", ">= 0.5.0"])