Improvement in the route and disable caching

check-connection.php

@@ -0,0 +1,12 @@
+<?php
+global $wpdb;
+$result = $wpdb->check_connection();
+
+
+if ($result) {
+    header('Content-Type: text/plain; charset=utf-8');
+    header('Cache-Control: no-cache, no-store, must-revalidate');
+    header('Pragma: no-cache');
+    header('Expires: 0');
+    echo get_option_or_value("wp_uptime_response_value", 'OK');
+}

readme.md

@@ -11,7 +11,7 @@ Just install the plugin and activate it.
 By default, the API is at this address and if mysql is running it will return OK.
 
 ```
-https://your-site.com/wp-json/wp-uptime/ok
+https://your-site.com/ok/
 ```
 
 ## Edition panel

wp-uptime.php

@@ -28,38 +28,30 @@ function get_option_or_value($key, $default_value)
     return $response;
 }
 
-add_action('rest_api_init', function () {
-    register_rest_route(
-        'wp-uptime',
-        '/' . get_option_or_value("wp_uptime_endpoint_path", 'ok') . '/',
-        array(
-            'methods' => 'GET',
-            'callback' => 'wp_uptime_route_handler',
-        )
-    );
-});
 
 
-function wp_uptime_route_handler($request)
+add_action('init', 'wpUptimeFeed');
+function wpUptimeFeed()
 {
-    global $wpdb;
-    $result = $wpdb->check_connection();
-
+    add_feed(get_option_or_value("wp_uptime_endpoint_path", 'ok'), 'wpUptimeResponse');
+    global $wp_rewrite;
+    $wp_rewrite->flush_rules();
+}
 
-    if ($result) {
-        echo get_option_or_value("wp_uptime_response_value", 'OK');
-    }
+function wpUptimeResponse()
+{
+    include('check-connection.php');
 }
 
 add_action('admin_menu', 'wp_uptime_menu');
 function wp_uptime_menu()
 {
-    add_menu_page('WP Uptime Settings', 'WP Uptime', 'manage_options', 'wp-uptime-settings', 'wp_uptime_settings_page');
+    add_options_page('WP Uptime Settings', 'WP Uptime', 'manage_options', 'wp-uptime-settings', 'wp_uptime_settings_page');
 }
 
 function wp_uptime_settings_page()
 {
-    $url = get_rest_url(null, 'wp-uptime/' . get_option_or_value("wp_uptime_endpoint_path", 'ok') . '/');
+    $url = get_site_url(null, get_option_or_value("wp_uptime_endpoint_path", 'ok') . '/');
 
 
     ?>