text: //
  // io_service.hpp
  // ~~~~~~~~~~~~~~
  //
  // Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
  //
  // Distributed under the Boost Software License, Version 1.0. (See accompanying
  // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  //
  
  #ifndef ASIO_IO_SERVICE_HPP
  #define ASIO_IO_SERVICE_HPP
  
  #if defined(_MSC_VER) && (_MSC_VER >= 1200)
  # pragma once
  #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
  
  #include "asio/io_context.hpp"
  
  #include "asio/detail/push_options.hpp"
  
  namespace asio {
  
  #if !defined(ASIO_NO_DEPRECATED)
  /// Typedef for backwards compatibility.
  typedef io_context io_service;
  #endif // !defined(ASIO_NO_DEPRECATED)
  
  } // namespace asio
  
  #include "asio/detail/pop_options.hpp"
  
  #endif // ASIO_IO_SERVICE_HPP
  