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

req.cookies When using cookie-parser middleware,

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

req.subdomains An array of subdomains in the domain name of the request. //

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

req.is(type) Returns true if the incoming request’s “Content-Type” HTTP header field matches the MIME type specified by the type