better handlign of something.

src/main.rs

@@ -51,6 +51,8 @@ fn handle_connection(mut stream: TcpStream) {
         keyfile[0].pop().expect("Not a string").to_string();
         if api_key == keyfile[0] {
             response = return_response("200");
+        } else {
+            response = return_response("404");
         }
     }
     stream.write_all(response.as_bytes()).unwrap();