basic_datagram_socket.hpp

LINUX下

   *
   * @param handler The handler to be called when the send operation completes.
   * Copies will be made of the handler as required. The function signature of
   * the handler must be:
   * @code void handler(
   *   const asio::error_code& error, // Result of operation.
   *   std::size_t bytes_transferred           // Number of bytes sent.
   * ); @endcode
   * Regardless of whether the asynchronous operation completes immediately or
   * not, the handler will not be invoked from within this function. Invocation
   * of the handler will be performed in a manner equivalent to using
   * asio::io_service::post().
   *
   * @note The async_send operation can only be used with a connected socket.
   * Use the async_send_to function to send data on an unconnected datagram
   * socket.
   */
  template <typename ConstBufferSequence, typename WriteHandler>
  void async_send(const ConstBufferSequence& buffers,
      socket_base::message_flags flags, WriteHandler handler)
  {
    this->service.async_send(this->implementation, buffers, flags, handler);
  }

  /// Send a datagram to the specified endpoint.
  /**
   * This function is used to send a datagram to the specified remote endpoint.
   * The function call will block until the data has been sent successfully or
   * an error occurs.
   *
   * @param buffers One or more data buffers to be sent to the remote endpoint.
   *
   * @param destination The remote endpoint to which the data will be sent.
   *
   * @returns The number of bytes sent.
   *
   * @throws asio::system_error Thrown on failure.
   *
   * @par Example
   * To send a single data buffer use the @ref buffer function as follows:
   * @code
   * asio::ip::udp::endpoint destination(
   *     asio::ip::address::from_string("1.2.3.4"), 12345);
   * socket.send_to(asio::buffer(data, size), destination);
   * @endcode
   * See the @ref buffer documentation for information on sending multiple
   * buffers in one go, and how to use it with arrays, boost::array or
   * std::vector.
   */
  template <typename ConstBufferSequence>
  std::size_t send_to(const ConstBufferSequence& buffers,
      const endpoint_type& destination)
  {
    asio::error_code ec;
    std::size_t s = this->service.send_to(
        this->implementation, buffers, destination, 0, ec);
    asio::detail::throw_error(ec);
    return s;
  }

  /// Send a datagram to the specified endpoint.
  /**
   * This function is used to send a datagram to the specified remote endpoint.
   * The function call will block until the data has been sent successfully or
   * an error occurs.
   *
   * @param buffers One or more data buffers to be sent to the remote endpoint.
   *
   * @param destination The remote endpoint to which the data will be sent.
   *
   * @param flags Flags specifying how the send call is to be made.
   *
   * @returns The number of bytes sent.
   *
   * @throws asio::system_error Thrown on failure.
   */
  template <typename ConstBufferSequence>
  std::size_t send_to(const ConstBufferSequence& buffers,
      const endpoint_type& destination, socket_base::message_flags flags)
  {
    asio::error_code ec;
    std::size_t s = this->service.send_to(
        this->implementation, buffers, destination, flags, ec);
    asio::detail::throw_error(ec);
    return s;
  }

  /// Send a datagram to the specified endpoint.
  /**
   * This function is used to send a datagram to the specified remote endpoint.
   * The function call will block until the data has been sent successfully or
   * an error occurs.
   *
   * @param buffers One or more data buffers to be sent to the remote endpoint.
   *
   * @param destination The remote endpoint to which the data will be sent.
   *
   * @param flags Flags specifying how the send call is to be made.
   *
   * @param ec Set to indicate what error occurred, if any.
   *
   * @returns The number of bytes sent.
   */
  template <typename ConstBufferSequence>
  std::size_t send_to(const ConstBufferSequence& buffers,
      const endpoint_type& destination, socket_base::message_flags flags,
      asio::error_code& ec)
  {
    return this->service.send_to(this->implementation,
        buffers, destination, flags, ec);
  }

  /// Start an asynchronous send.
  /**
   * This function is used to asynchronously send a datagram to the specified
   * remote endpoint. The function call always returns immediately.
   *
   * @param buffers One or more data buffers to be sent to the remote endpoint.
   * Although the buffers object may be copied as necessary, ownership of the
   * underlying memory blocks is retained by the caller, which must guarantee
   * that they remain valid until the handler is called.
   *
   * @param destination The remote endpoint to which the data will be sent.
   * Copies will be made of the endpoint as required.
   *
   * @param handler The handler to be called when the send operation completes.
   * Copies will be made of the handler as required. The function signature of
   * the handler must be:
   * @code void handler(
   *   const asio::error_code& error, // Result of operation.
   *   std::size_t bytes_transferred           // Number of bytes sent.
   * ); @endcode
   * Regardless of whether the asynchronous operation completes immediately or
   * not, the handler will not be invoked from within this function. Invocation
   * of the handler will be performed in a manner equivalent to using
   * asio::io_service::post().
   *
   * @par Example
   * To send a single data buffer use the @ref buffer function as follows:
   * @code
   * asio::ip::udp::endpoint destination(
   *     asio::ip::address::from_string("1.2.3.4"), 12345);
   * socket.async_send_to(
   *     asio::buffer(data, size), destination, handler);
   * @endcode
   * See the @ref buffer documentation for information on sending multiple
   * buffers in one go, and how to use it with arrays, boost::array or
   * std::vector.
   */
  template <typename ConstBufferSequence, typename WriteHandler>
  void async_send_to(const ConstBufferSequence& buffers,
      const endpoint_type& destination, WriteHandler handler)
  {
    this->service.async_send_to(this->implementation, buffers, destination, 0,
        handler);
  }

  /// Start an asynchronous send.
  /**
   * This function is used to asynchronously send a datagram to the specified
   * remote endpoint. The function call always returns immediately.
   *
   * @param buffers One or more data buffers to be sent to the remote endpoint.
   * Although the buffers object may be copied as necessary, ownership of the
   * underlying memory blocks is retained by the caller, which must guarantee
   * that they remain valid until the handler is called.
   *
   * @param flags Flags specifying how the send call is to be made.
   *
   * @param destination The remote endpoint to which the data will be sent.
   * Copies will be made of the endpoint as required.
   *
   * @param handler The handler to be called when the send operation completes.
   * Copies will be made of the handler as required. The function signature of
   * the handler must be:
   * @code void handler(
   *   const asio::error_code& error, // Result of operation.
   *   std::size_t bytes_transferred           // Number of bytes sent.
   * ); @endcode
   * Regardless of whether the asynchronous operation completes immediately or
   * not, the handler will not be invoked from within this function. Invocation
   * of the handler will be performed in a manner equivalent to using
   * asio::io_service::post().
   */
  template <typename ConstBufferSequence, typename WriteHandler>
  void async_send_to(const ConstBufferSequence& buffers,
      const endpoint_type& destination, socket_base::message_flags flags,
      WriteHandler handler)
  {
    this->service.async_send_to(this->implementation, buffers, destination,
        flags, handler);
  }

  /// Receive some data on a connected socket.
  /**
   * This function is used to receive data on the datagram socket. The function
   * call will block until data has been received successfully or an error
   * occurs.
   *
   * @param buffers One or more buffers into which the data will be received.
   *
   * @returns The number of bytes received.
   *
   * @throws asio::system_error Thrown on failure.
   *
   * @note The receive operation can only be used with a connected socket. Use
   * the receive_from function to receive data on an unconnected datagram
   * socket.
   *
   * @par Example
   * To receive into a single data buffer use the @ref buffer function as
   * follows:
   * @code socket.receive(asio::buffer(data, size)); @endcode
   * See the @ref buffer documentation for information on receiving into
   * multiple buffers in one go, and how to use it with arrays, boost::array or
   * std::vector.
   */
  template <typename MutableBufferSequence>
  std::size_t receive(const MutableBufferSequence& buffers)
  {
    asio::error_code ec;
    std::size_t s = this->service.receive(
        this->implementation, buffers, 0, ec);
    asio::detail::throw_error(ec);
    return s;
  }

  /// Receive some data on a connected socket.
  /**
   * This function is used to receive data on the datagram socket. The function
   * call will block until data has been received successfully or an error
   * occurs.
   *
   * @param buffers One or more buffers into which the data will be received.
   *
   * @param flags Flags specifying how the receive call is to be made.
   *
   * @returns The number of bytes received.
   *
   * @throws asio::system_error Thrown on failure.
   *
   * @note The receive operation can only be used with a connected socket. Use
   * the receive_from function to receive data on an unconnected datagram
   * socket.
   */
  template <typename MutableBufferSequence>
  std::size_t receive(const MutableBufferSequence& buffers,
      socket_base::message_flags flags)
  {
    asio::error_code ec;
    std::size_t s = this->service.receive(
        this->implementation, buffers, flags, ec);
    asio::detail::throw_error(ec);
    return s;
  }

  /// Receive some data on a connected socket.
  /**
   * This function is used to receive data on the datagram socket. The function
   * call will block until data has been received successfully or an error
   * occurs.
   *
   * @param buffers One or more buffers into which the data will be received.
   *
   * @param flags Flags specifying how the receive call is to be made.
   *
   * @param ec Set to indicate what error occurred, if any.
   *