diff --git a/kiri-engine/Pool/Pool.php b/kiri-engine/Pool/Pool.php
index 10d597ab..2d43d4ea 100644
--- a/kiri-engine/Pool/Pool.php
+++ b/kiri-engine/Pool/Pool.php
@@ -218,6 +218,9 @@ class Pool extends Component
 		if (!isset(static::$_connections[$name])) {
 			return;
 		}
+
+		var_dump(static::$_connections[$name]);
+
 		/** @var Channel|SplQueue $connection */
 		foreach (static::$_connections[$name] as $connection) {
 			$client = $connection->pop();