HTTPApp

The HTTP protocol specification defines a number of standard status codes that indicate the status of an HTTP request message. HTTP applications interpret these status codes, but for human beings, each of these codes has a corresponding string that provides a more understandable indication of the status of the HTTP request. 

Call StatusString to obtain the string that corresponds to a standard status code. If the StatusCode parameter is not one of the codes defined in the HTTP standard, StatusString returns an empty string. 

TWebResponse