session服务修改

@@ -11,6 +11,7 @@ namespace Hood\Core\Session;
 use Hood\Core\Support\Str;
 use Hood\Core\Root;
 use Hood\Cache\Memcached as mcCache;
+use Hood\Utils\Rpc\Factory;
 
 class RpcSession extends Root implements SessionHandlerInterface
 {
@@ -119,7 +120,7 @@ class RpcSession extends Root implements SessionHandlerInterface
         }
         $this->setOption();
         if (empty($this->serviceClient)) {
-            $this->serviceClient = new \Yar_Client($this->serviceUrl);
+            $this->serviceClient = Factory::getInstance($this->serviceUrl);
         }
         return $this->serviceClient;
     }