Add manual router function

main.go

@@ -14,9 +14,22 @@ func contactHandler(w http.ResponseWriter, r *http.Request) {
 	fmt.Fprint(w, "<h1>Contact Page</h1><p>To get in touch, email me at <a href=\"mailto:example@example.com\">example@example.com</a></p>")
 }
 
+func pathHandler(w http.ResponseWriter, r *http.Request) {
+	switch r.URL.Path {
+	case "/":
+		homeHandler(w, r)
+	case "/contact":
+		contactHandler(w, r)
+	default:
+		w.Header().Set("Content-Type", "text/html; charset=utf8")
+		w.WriteHeader(http.StatusNotFound)
+		fmt.Fprint(w, "404 page not found")
+	}
+	fmt.Fprintf(w, "<hr><p>%s</p>", r.URL.Path)
+}
+
 func main() {
-	http.HandleFunc("/", homeHandler)
-	http.HandleFunc("/contact", contactHandler)
+	http.HandleFunc("/", pathHandler)
 	fmt.Println("Starting the server on :3000...")
 	http.ListenAndServe(":3000", nil)
 }