Custom authentication for google and facebook
To use this project you must have created facebook app and google app. The following links are usefull for those who have no idea on how to create one for facebook and google.
https://developers.google.com/identity/sign-in/web/devconsole-project
https://developers.google.com/identity/protocols/OAuth2UserAgent
https://developers.facebook.com/docs/facebook-login/access-tokens
To run this code the redirect url in your facebook or google app should look like this "http://[email protected]/Home/CustomOauthCallback" which can also be https.