Login to external API using oauth1

I am trying to use the shapeways API.

The main problem I have is the Oauth1 authentication. Any information on the steps that are required will be very helpful.

I have been trying to use OAuth1Binding from the oauth1 package. I am able to get the requestTokenSecret but the requestToken appears as undefined.

For the request token I think that the API needs a GET call, see picture below:

but OAuthBinding, has a POST method to request the Token,
see here
.

The same happens for the with the method to get the accessToken.

I’ll try to fork the oauth package and change the methods.