通过Twitter或LinkedIn OAuth登录用户，而无需打开弹出窗口

Question

I've implemented login with Twitter via their OAuth API. I've decided to use a popup for Authorization/Authentication, which closes itself when the process ends.

However, it really bugs me that once a user has already Authorized my app, and he is also Authenticated with Twitter, the popup will simply open and close itself. I'd like to avoid creating the popup completely, but the other option is to redirect the main page for Authentication, which again I'd like to avoid since it has a flicker effect going to Twitter and back to my site.

What I'm asking, is it possible to Authenticate the user with Twitter via AJAX or any another option which doesn't require a pointless open-close popup, or flickering the screen back-and-forth with Twitter?

Facebook does this via their JS API with Ajax, but I'm asking for a server-to-server solution (I think Twitter forbids OAuth from the client anyway).

Thanks!

Answer 1

For LinkedIn, if you are using the REST API, you can send users to the authenticate endpoint :

https://www.linkedin.com/uas/oauth/authenticate

If they are still logged in and their OAuth token is still valid, they will not see anything.