How to make pass-through authorization from vk, google, twitter, etc. on node.js?

Question

JavaScript

Hello! There is such a task: a certain functionality should be connected on a third-party service, but be inaccessible without authorization. How to make authorization on a third-party resource, but so that it takes place for the server? This is implemented in hypercomments. The service will use Socket.io
Thank you!

Answer 1

see loginza.ru or similar