title: Get request object in Passport strategy callback
body: <p>So here is my configuration for passport-facebook strategy:</p>
  
  <pre><code>    passport.use(new FacebookStrategy({
          clientID: ".....",
          clientSecret: ".....",
          callbackURL: "http://localhost:1337/register/facebook/callback",
      },
      facebookVerificationHandler
      ));
  </code></pre>
  
  <p>And here is facebookVerificationHandler:</p>
  
  <pre><code>var facebookVerificationHandler = function (accessToken, refreshToken, profile, done) { 
      process.nextTick(function () {    
          .......
      });    
  };
  </code></pre>
  
  <p>Is there a way to access to the request object in facebookVerificationHandler?</p>
  
  <p>Users are registered to my site with a LocalStrategy but then they will be able to add their social accounts and associate those account with their local accounts. When the callback above is called, the user who is currently logged in is already available in req.user so I need to access req to associate the user with the facebook account.</p>
  
  <p>Is this the correct way to implement it or should I consider another way of doing it?</p>
  
  <p>Thanks.</p>