ceph/src/boost/boost/asio/ip/v6_only.hpp

   1 //
   2 // ip/v6_only.hpp
   3 // ~~~~~~~~~~~~~~
   4 //
   5 // Copyright (c) 2003-2019 Christopher M. Kohlhoff (chris at kohlhoff dot com)
   6 //
   7 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   8 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   9 //
  10
  11 #ifndef BOOST_ASIO_IP_V6_ONLY_HPP
  12 #define BOOST_ASIO_IP_V6_ONLY_HPP
  13
  14 #if defined(_MSC_VER) && (_MSC_VER >= 1200)
  15 # pragma once
  16 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
  17
  18 #include <boost/asio/detail/config.hpp>
  19 #include <boost/asio/detail/socket_option.hpp>
  20
  21 #include <boost/asio/detail/push_options.hpp>
  22
  23 namespace boost {
  24 namespace asio {
  25 namespace ip {
  26
  27 /// Socket option for determining whether an IPv6 socket supports IPv6
  28 /// communication only.
  29 /**
  30  * Implements the IPPROTO_IPV6/IP_V6ONLY socket option.
  31  *
  32  * @par Examples
  33  * Setting the option:
  34  * @code
  35  * boost::asio::ip::tcp::socket socket(my_context);
  36  * ...
  37  * boost::asio::ip::v6_only option(true);
  38  * socket.set_option(option);
  39  * @endcode
  40  *
  41  * @par
  42  * Getting the current option value:
  43  * @code
  44  * boost::asio::ip::tcp::socket socket(my_context);
  45  * ...
  46  * boost::asio::ip::v6_only option;
  47  * socket.get_option(option);
  48  * bool v6_only = option.value();
  49  * @endcode
  50  *
  51  * @par Concepts:
  52  * GettableSocketOption, SettableSocketOption.
  53  */
  54 #if defined(GENERATING_DOCUMENTATION)
  55 typedef implementation_defined v6_only;
  56 #elif defined(IPV6_V6ONLY)
  57 typedef boost::asio::detail::socket_option::boolean<
  58     IPPROTO_IPV6, IPV6_V6ONLY> v6_only;
  59 #else
  60 typedef boost::asio::detail::socket_option::boolean<
  61     boost::asio::detail::custom_socket_option_level,
  62     boost::asio::detail::always_fail_option> v6_only;
  63 #endif
  64
  65 } // namespace ip
  66 } // namespace asio
  67 } // namespace boost
  68
  69 #include <boost/asio/detail/pop_options.hpp>
  70
  71 #endif // BOOST_ASIO_IP_V6_ONLY_HPP