boost::asio::io_service _io_service;
boost::asio::deadline_timer _deadline;
boost::asio::ip::tcp::socket _socket;
int _timeout;
boost::scoped_ptr<Digester> _read_digester;
boost::scoped_ptr<Digester> _write_digester;
boost::asio::io_service _io_service;
boost::asio::deadline_timer _deadline;
boost::asio::ip::tcp::socket _socket;
int _timeout;
boost::scoped_ptr<Digester> _read_digester;
boost::scoped_ptr<Digester> _write_digester;