I have an access token by a Facebook user, and I'd like to verify whether this access token is valid, ie whether it is known to Facebook, currently valid, and so on…
So far, I have taken a look at the various APIs of Facebook , and basically, what I need is a combination of the User functionality to get the user's details, but for a user identified by an access token (not his / her ID).
I suppose that somehow I need to deal with the access token API , but as I am completely new to developing Facebook applications, I'm not sure where to start.
Basically, I can not imagine that this should be a quite hard task. Intuitively I'd expect something such as:
GET http://graph.facebook.com/me?accessToken=$INSERT_TOKEN_HERE
Does anything like this exist? If so, can you please point me in the right direction? Even a few hints on what to search for (terms, eg) might be helpful.
By the way, this request shell be sent from a server, not from the browser.
I don't know whether it is important, but I am using Node.js for this. Additionally, if there's a ready-made module which can abstract the REST calls away, this might also be helpful and interesting.
Any ideas?
You can retrieve the information related to a particular Access Token by issuing a GET request to the debug_token
connection. Something like:
GET /debug_token?
input_token={input-token}&
access_token={access-token}
You can get more information about it in the Getting Info about Tokens and Debugging reference.
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