[WebProfilerBundle ] Fixed an edge case on WDT loading

src/Symfony/Bundle/WebProfilerBundle/Controller/ProfilerController.php

@@ -239,7 +239,7 @@ class ProfilerController
         $this->profiler->disable();
 
         if (!$profile = $this->profiler->loadProfile($token)) {
-            return new Response('', 200, array('Content-Type' => 'text/html'));
+            return new Response('', 404, array('Content-Type' => 'text/html'));
         }
 
         // the toolbar position (top, bottom, normal, or null -- use the configuration)

src/Symfony/Bundle/WebProfilerBundle/Resources/views/Profiler/base_js.html.twig

@@ -9,12 +9,26 @@
             request = function(url, onSuccess, onError, payload, options) {
                 var xhr = window.XMLHttpRequest ? new XMLHttpRequest() : new ActiveXObject('Microsoft.XMLHTTP');
                 options = options || {};
+                options.maxTries = options.maxTries || 0;
                 xhr.open(options.method || 'GET', url, true);
                 xhr.setRequestHeader('X-Requested-With', 'XMLHttpRequest');
                 xhr.onreadystatechange = function(state) {
-                    if (4 === xhr.readyState && 200 === xhr.status) {
+                    if (4 !== xhr.readyState) {
+                        return null;
+                    }
+
+                    if (xhr.status == 404 && options.maxTries > 1) {
+                        setTimeout(function(){
+                            options.maxTries--;
+                            request(url, onSuccess, onError, payload, options);
+                        }, 500);
+
+                        return null;
+                    }
+
+                    if (200 === xhr.status) {
                         (onSuccess || noop)(xhr);
-                    } else if (4 === xhr.readyState && xhr.status != 200) {
+                    } else {
                         (onError || noop)(xhr);
                     }
                 };
@@ -75,6 +89,7 @@
                             (onSuccess || noop)(xhr, el);
                         },
                         function(xhr) { (onError || noop)(xhr, el); },
+                        '',
                         options
                     );
                 }

src/Symfony/Bundle/WebProfilerBundle/Resources/views/Profiler/toolbar_js.html.twig

@@ -34,7 +34,8 @@
                 if (xhr.status !== 0) {
                     confirm('An error occurred while loading the web debug toolbar (' + xhr.status + ': ' + xhr.statusText + ').\n\nDo you want to open the profiler?') && (window.location = '{{ path("_profiler", { "token": token }) }}');
                 }
-            }
+            },
+            {'maxTries': 5}
         );
     })();
 /*]]>*/</script>