Method what

3rd/asio-1.24.0/include/asio/system_error.hpp:84–106

Get a string representation of the exception.

  /// Get a string representation of the exception.
  virtual const char* what() const throw ()
  {
#if !defined(ASIO_NO_EXCEPTIONS)
    try
#endif // !defined(ASIO_NO_EXCEPTIONS)
    {
      if (!what_.get())
      {
        std::string tmp(context_);
        if (tmp.length())
          tmp += ": ";
        tmp += code_.message();
        what_.reset(new std::string(tmp));
      }
      return what_->c_str();
    }
#if !defined(ASIO_NO_EXCEPTIONS)
    catch (std::exception&)
    {
      return "system_error";
    }
#endif // !defined(ASIO_NO_EXCEPTIONS)
  }

  /// Get the error code associated with the exception.
  error_code code() const