How to redirect URL in Go main method?

I have a GorrilaMux set up in Go that will make an API call if type in a specific URL in a browser. I want to make the same API call in my main method in go if the URL is given as a command line argument. However, the http.redirect() method which seems to be able to do this, requires a HTTP ResponseWriter and a *HTTPRequest variables as function parameters. I do not know how to produce these variables within a main method. How do I do this, OR, is there a better way to make the API call from the URL in Golang?

Code to set up Router

func main(){
   router := mux.NewRouter().StrictSlash(true)
   for _, route := range routes { //Sets up predefined routes
     router.
		Path(route.Path).
		Name(route.Name).
		Handler(route.HandlerFunc)
    }

  URL:="localhost:8080/whatever" //URL I want to redirect, route would be "/whatever"

 http.redirect(????)

 }

An HTTP redirect is a response to a client and should be called from an invocation of a handler. The http.redirect(w http.ResponseWriter, r *http.Request) function has no meaning in the context of the main function.

You can register a handler for the given route like so:

router.Path("/whatever").Handler(func(writer http.ResponseWriter, req *http.Request) {
    http.Redirect(writer, req, "localhost:8080/whatever", http.StatusMovedPermanently)
))

This adds a path to the router and invokes the simple http.Handlerfunc which contains a call to http.Redirect(...). Here this makes sense because we are handling a response to a client connection. It is logical to return a 301 status code and the URL for the target of the redirect.

We use a helper function to make the code cleaner.

// Redirect will peform an HTTP redirect to the given redirect Path.
func Redirect(redirectPath string) func(http.ResponseWriter, *http.Request) {
	return func(w http.ResponseWriter, r *http.Request) {
		http.Redirect(w, r, redirectPath, http.StatusFound)
	}
}


router.Path("/whatever").Handler(Redirect("/test_path"))
router.Path("/whatever2").Handler(Redirect("/test_path2"))