c++ - 如何使用 Boost.Asio C++？

Question

我会尝试使用该库在多个平台上使用 socket Boost.Asio c++。我在这里下载了最新版本:

http://sourceforge.net/projects/boost/files/boost/1.46.1/

但现在我在我的代码中使用什么？我有编译吗？包括就够了吗？能告诉我步骤吗？

Answer 1

如何使用它取决于你想做什么，;-)。

文档位于此处:

http://www.boost.org/doc/libs/1_46_1/doc/html/boost_asio.html

您会发现许多适合您需要的示例。

对于构建，您应该注意库依赖性取决于您是在 Windows 上还是在 Linux 上运行。看这里

http://www.boost.org/doc/libs/1_46_1/doc/html/boost_asio/using.html

特别是:

With MSVC or Borland C++ you may want to add -DBOOST_DATE_TIME_NO_LIB and -DBOOST_REGEX_NO_LIB to your project settings to disable autolinking of the Boost.Date_Time and Boost.Regex libraries respectively. Alternatively, you may choose to build these libraries and link to them

如果您不想依赖于其他 boost 库，那么您可以使用此处的非 boost(我认为其他方面相同的 asio)库:http://think-async.com/

有关其他文档的来源，请参阅关于 SO 的这个问题:Best documentation for Boost:asio?

例如，要打开串行端口，您可以这样写:

/** Manage serial connections.*/
class serial_manager
{

  boost::asio::io_service m_io_service;
  std::string m_name;
  const unsigned int m_baud_rate;
  const enum flow_control::type m_flow_control;
  const enum parity::type m_parity;
  const enum stop_bits::type m_stop_bits;
  const unsigned int m_char_size;
  boost::asio::serial_port  m_SerialPort;
  boost::system::error_code m_error;
public:

  /** A constructor.
   *  @param name The dvice name, for example "COM1" (windows, or "/dev/ttyS0" (linux).
   *  @param baud_rate The baud rate. 
   *  @param flow_control The flow control. Acceptable values are flow_control::none, flow_control::software, flow_control::hardware.
   *  @param parity The parity of the connection. Acceptable values are parity::none, parity::even, parity::odd.
   *  @param stop_bits The number of stop bits. Acceptable values are stop_bits::one, stop_bits::one_point_five, stop::bits::two
   *  @param char_size The number of characters in connection.
   */
  serial_manager(const std::string& name, 
         const unsigned int& baud_rate  = 19200,
         const enum flow_control::type&   flow_control  = flow_control::none,
         const enum parity::type&         parity        = parity::none,
         const enum stop_bits::type&      stop_bits     = stop_bits::one,
         const unsigned int& char_size  = 8
         ) 
;
  void open();
};

void
serial_manager::open() {
  if (!m_SerialPort.is_open()) 
    {
      m_SerialPort.open(m_name, m_error);

     if (m_error == boost::system::errc::no_such_file_or_directory ) 
     {  //for example you tried to open "COM1" on a linux machine.
        //... handle the error somehow
     }

      m_SerialPort.set_option(boost::asio::serial_port::baud_rate(m_baud_rate));
      m_SerialPort.set_option(boost::asio::serial_port::flow_control(m_flow_control));
      m_SerialPort.set_option(boost::asio::serial_port::parity(m_parity));
      m_SerialPort.set_option(boost::asio::serial_port::stop_bits(m_stop_bits));
      m_SerialPort.set_option(boost::asio::serial_port::character_size(m_char_size));


    }
 }