Working with web handlers, requests, and ResponseWriters

Go defines HandlerFuncs and a Handler interface with the following signatures:

// HandlerFunc implements the Handler interface
type HandlerFunc func(http.ResponseWriter, *http.Request)

type Handler interface {
    ServeHTTP(http.ResponseWriter, *http.Request)
}

By default, the net/http package makes extensive use of these types. For example, a route can be attached to a Handler or HandlerFunc interface. This recipe will explore creating a Handler interface, listening on a local port, and performing some operations on an http.ResponseWriter interface after processing http.Request. This should be considered the basis for Go web applications and RESTFul APIs.

Getting ready

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