req.protocol Contains the request protocol string: either http or (for TLS requests) https. When

res.sendStatus(statusCode) Sets the response HTTP status code to statusCode and send its string representation as the response

How should I structure my application? There is no definitive answer to this question. The answer

router.all(path, [callback, ...] callback) This method is just like the router.METHOD() methods, except that it matches all HTTP

res.locals An object that contains response local variables scoped to the request, and therefore available only to the view(s) rendered during

express.Router([options]) Creates a new router object. var router

res.vary(field) Adds the field to the Vary response header, if it is not there already.

req.accepts(types) Checks if the specified content types are acceptable, based on the request’s Accept HTTP header field. The method

router.param(name, callback) Adds callback triggers to route parameters, where name is the name of the parameter and callback

router.METHOD(path, [callback, ...] callback) The router.METHOD() methods provide the routing functionality in Express, where METHOD