package handlers import ( "fmt" "net/http" ) type errorHandler struct { } func (e *errorHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) { w.Header().Set("Content-Type", "text/plain; charset=utf-8") _, _ = fmt.Fprintf(w, ` didumm %#v `, r.URL.Query()) } func NewErrorHandler() *errorHandler { return &errorHandler{} }