发件代理新增服务器

@@ -85,7 +85,9 @@ class ProxyService
 
         //监听连接关闭事件。
         $server->on('Close', function ($server, $fd) {
-            echo '连接关闭了 => '.$fd."\n";
+            if(!empty($this->clients[$fd])) {
+                echo '关闭连接 => ' . $fd . " 剩余 ".count($this->clients)." 个链接\n";
+            }
             $this->clients[$fd] = null;
             unset($this->clients[$fd]);
         });