Question: I've been looking for a while, and can't see to find a definitive documentation source. When I search for these, the first Google results are to StackOverflow.

Are there any more middleware functions similar to this?

Answer: 
While not explicitly documented anywhere easily found, you can see where the the `isAuthenticated` and `isUnauthenticated` flags are set in the Passport code at <https://github.com/jaredhanson/passport/blob/a892b9dc54dce34b7170ad5d73d8ccfba87f4fcf/lib/passport/http/request.js#L74>. 

`ensureAuthenticated` is not official, but can be implemented via the following:

```js
function ensureAuthenticated(req, res, next) {
  if (req.isAuthenticated())
    return next();
  else
    // Return error content: res.jsonp(...) or redirect: res.redirect('/login')
}

app.get('/account', ensureAuthenticated, function(req, res) {
  // Do something with user via req.user
});

```
the reason it return false is mostly because its declared below the route definition.
i am doing it in other file so i use it like this 

```
//auth check
function auth(req,res,next){
    if(req.isAuthenticated()){
        next();
    } 
    else{
        res.redirect("/fail");}
}

//routes
require("./routes/myroute")(app,auth);

```