Construct a basic_serial_port without opening it.

basic_serial_port(
    boost::asio::io_service & io_service);

Construct and open a basic_serial_port.

basic_serial_port(
    boost::asio::io_service & io_service,
    const char * device);

basic_serial_port(
    boost::asio::io_service & io_service,
    const std::string & device);

Construct a basic_serial_port on an existing native serial port.

basic_serial_port(
    boost::asio::io_service & io_service,
    const native_type & native_serial_port);