增加 SSE 兼容性

app/Http/Middleware/AddHeaders.php

@@ -18,7 +18,11 @@ class AddHeaders
     public function handle(Request $request, Closure $next): mixed
     {
         $response = $next($request);
+
+        // SSE, 检测有没有 header() 方法。
+        if (method_exists($response, 'header')) {
             $response->header('Node-Id', ClusterSupport::currentNode()['id']);
+        }
 
         return $response;
     }

app/Http/Middleware/ReportRequestToCluster.php

@@ -43,10 +43,16 @@ public function handle(Request $request, Closure $next): mixed
 
         $end = microtime(true);
 
+        $status = 0;
+        // 检测有没有 status() 方法。
+        if (method_exists($response, 'status')) {
+            $status = $response->status();
+        }
+
         ClusterSupport::publish('http.outgoing', [
             'id' => $random_id,
             'method' => $method,
-            'status' => $response->status(),
+            'status' => $status,
             'path' => $path,
             // 'headers' => $response->headers->all(),
             // 'content' => $response->getContent(),