oauth - How does one get the app access token for debug_token inspection on Facebook? -


it suggested whether app uses code or token response_type should perform automated check on access_token confirm token belongs person app expects belong , app generated token.

you supposed on 

get graph.facebook.com/debug_token?  input_token={token-to-inspect}  &access_token={app-token-or-admin-token}

where app-token app_id|app_secret , token-to-inspect user's access_token. also, think reading documentation can retrieve app-token doing client-credentials call app_id , app_secret.

this fine authorization flow implemented server-side, if you're using implicit method , chose response_type token (and whatever reason aren't using fb's javascript sdk)? how safely app-token without leaking app_secret? how fb's sdk it?

you can generate app_token in facebook developer panel here , save config file server side. developer's page:

app tokens not expire , should kept secret related app secret.

on page, use following flow:

  1. the user authenticates facebook js sdk, , sends token + uid server.
  2. the server validates given token related given person via call "debug_token" method, spoke of.
  3. if token + uid combination valid, authenticates user server side.

i hope helps.


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