How to get read headers in node.js using body-parser?

I am tring to create a demo API server using node.js, express4 and body-parser. I am trying to secure it using some Api-Key which will have to be passed in the request header. However, I am not able to do it.

I tried

console.log(bodyParser.getheader("Api-Key"))

and

console.log(app.getheader("Api-Key"))

but in both cases I get the error

getheader is not a function

So now can I read headers using body parser?

via Ayush Gupta