Registration via social networks via asp.net core web api and angular 2?

Question

Angular

Hello, I have a question that I haven’t been able to find an answer for a couple of days. I followed the example of logging in through social networks https://docs.microsoft.com/en-us/aspnet/core/secur... but all the examples found on the Internet they work if the client and server are on the same host. My client application is spa (angular 2) and it works on a different host than api, how can I implement this approach through social networks as in the article above.