test correction and Proxy func addition

router.go

@@ -141,6 +141,15 @@ func (r *Router) ServeHTTP(w http.ResponseWriter, req *http.Request) {
 		panic("mux: method ServeHTTP called on nil")
 	}
 
+	r.mux.ServeHTTP(w, req)
+}
+
+// Proxy are request and
+func (r *Router) Proxy(w http.ResponseWriter, req *http.Request) {
+	if r == nil {
+		panic("mux: method ServeHTTP called on nil")
+	}
+
 	h, pattern := r.mux.Handler(req)
 	if pattern == "" {
 		http.Error(w, "Not Found", http.StatusNotFound)