function afterResponse(Swoole\Request $request, Swoole\Response $response)
{
if (!$this->keepalive or $response->head['Connection'] == 'close') {
$this->server->close($request->fd);
}
$request->unsetGlobal();
//清空request缓存区
unset($this->requests[$request->fd]);
unset($request);
unset($response);
}