app.put(path, callback [, callback ...]) Routes HTTP PUT requests to the specified path with the specified callback functions. For more information

Routing refers to the definition of application end points (URIs) and how they respond to client requests. For an introduction to routing, see

app.disable(name) Sets the Boolean setting name to false, where name is one of the properties from the

app.render(view, [locals], callback) Returns the rendered HTML of a view via the callback function. It accepts an optional parameter

req.ips When the trust proxy setting does not evaluate to false, this property contains an array of IP addresses specified

req.query This property is an object containing a property for each query string parameter in the route. If there is no query string, it is

req.route Contains the currently-matched route, a string. For example: app

req.path Contains the path part of the request URL. // example.com/users

res.set(field [, value]) Sets the response’s HTTP header field to value. To set multiple fields at once, pass an object

req.stale Indicates whether the request is “stale,” and is the opposite of req.fresh. For more information, see