Example connect-auth using scopes to allow con-current strategy authentications.

gistfile1.js

var  express= require('express')
   , auth= require('./.node_modules/connect-auth')
   , url= require('url');

var app = express.createServer()
  , yourTwitterConsumerKey= "xxx"
  , yourTwitterConsumerSecret= "yyyy"
  , fbId= "asdsd"
  , fbSecret= "asdsdsds"
  , fbCallbackAddress= "http://somehost.com/auth/facebook_callback";

function auth_middleware(){
  return function(req, res, next) {
    var urlp= url.parse(req.url, true)
    if( urlp.query.login_with ) {
      req.authenticate([urlp.query.login_with], {scope: urlp.query.login_with}, function(error, authenticated) {
        if( error ) {
          // Something has gone awry, behave as you wish.
          console.log( error );
          res.end();
        } else {
          if( authenticated === undefined ) {
            // The authentication strategy requires some more browser interaction, suggest you do nothing here!
          }
          else {
            // We've either failed to authenticate, or succeeded (req.isAuthenticated() will confirm, as will the value of the received argument)
            next();
          }
      }});
    } else {
      next();
    }
  }
};
function firstLoginHandler(authContext, executionResult, callback ){
  console.log( 'First Login' );  
  console.log( executionResult );
  callback();
}

app.configure(function(){
  app.use(express.cookieParser());
  app.use(express.session({ secret: 'foobar' }));
  app.use(auth({strategies:[ auth.Twitter({consumerKey: yourTwitterConsumerKey, consumerSecret: yourTwitterConsumerSecret}),
      auth.Facebook({appId : fbId, appSecret: fbSecret, scope: "email", callback: fbCallbackAddress})],
      trace: true,
      logoutHandler: require('connect-auth/lib/events').redirectOnLogout("/"),
      firstLoginHandler: firstLoginHandler
  }));
  app.use( auth_middleware() );
});

app.get('/', function(req, res){
    res.send('Hello World <a href="/secrets">Secrets!</a>');
});

app.listen(80);