Get 301 status code when sending GET request with parameter

Question

I have a very simple Go server code setup with mux and when I use curl with GET request params (localhost:8080/suggestions/?locale=en), I get 301 status code (Move permanently). But when there's no get parameters, it's working just fine.

func main() {
router := mux.NewRouter().StrictSlash(true)
router.HandleFunc("/suggestions", handleSuggestions).Methods("GET")
log.Fatal(http.ListenAndServe("localhost:8080", router))
}

Can somebody shed me a light on this.Thanks

Answer 1

go doc mux.StrictSlash states:

func (r *Router) StrictSlash(value bool) *Router
    StrictSlash defines the trailing slash behavior for new routes. The initial
    value is false.

    When true, if the route path is "/path/", accessing "/path" will redirect to
    the former and vice versa. In other words, your application will always see
    the path as specified in the route.

    When false, if the route path is "/path", accessing "/path/" will not match
    this route and vice versa.

    Special case: when a route sets a path prefix using the PathPrefix() method,
    strict slash is ignored for that route because the redirect behavior can't
    be determined from a prefix alone. However, any subrouters created from that
    route inherit the original StrictSlash setting.

So to avoid the redirects you can either mux.NewRouter().StrictSlash(false) which is equivalent to mux.NewRouter() or use a URL with a trailing slash i.e. router.HandleFunc("/suggestions/", handleSuggestions).Methods("GET")