protected function executePipeline(ConnectionInterface $connection, \SplQueue $commands)
    {
        foreach ($commands as $command) {
            $connection->writeRequest($command);
        }

        $responses = array();
        $exceptions = $this->throwServerExceptions();

        while (!$commands->isEmpty()) {
            $command = $commands->dequeue();
            $response = $connection->readResponse($command);

            if (!$response instanceof ResponseInterface) {
                $responses[] = $command->parseResponse($response);
            } elseif ($response instanceof ErrorResponseInterface && $exceptions) {
                $this->exception($connection, $response);
            } else {
                $responses[] = $response;
            }
        }

        return $responses;
    }