Linkedin - Authentication
https://www.linkedin.com/uas/oauth2/authorization? response_type=code &client_id=APIKey &scope=r_fullprofile+r_emailaddress+r_network+r_contactinfo+rw_nus &state=DCEEFWF45453sdffef424 &redirect_uri=http://gerardnico.com/linkedin.php
- response type must be always code. The code will permit to get the Access Token
- client_id is the Api Key
- scope determines the user information that the application can read. See scope. Which information the application would like to access ?
- state is a long generated character to avoid an attack (Called also a verifier)
- redirect_uri is an URI where the respone (ie the code) will be returned.
The scope gives the permissions level. In order to retrieve the connections, you'll need to have the r_network scope granted to the application.