Step 1
The user selects the provider with whom they wish to sign in to the client app.
Step 2
The user is redirected to the provider’s website (with a URL that includes the client app id, where they are asked to give permission to the client app.
Step 3
The user signs in from the OAuth service provider and accepts the permissions requested by the third-party application.
Step 4
The user is redirected to the client app with the request code
Step 5
The the background, the client sends the grant code to the provider, who sends back an authentication token
Step 6
The client app uses the access token to make authorized request to the provider, such as to get user information or wall posts.