// // v6_only.hpp // ~~~~~~~~~~~ // // Copyright (c) 2003-2008 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 BOOST_ASIO_IP_V6_ONLY_HPP #define BOOST_ASIO_IP_V6_ONLY_HPP #if defined(_MSC_VER) && (_MSC_VER >= 1200) # pragma once #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) #include <boost/asio/detail/push_options.hpp> #include <boost/asio/detail/socket_option.hpp> namespace boost { namespace asio { namespace ip { /// Socket option for determining whether an IPv6 socket supports IPv6 /// communication only. /** * Implements the IPPROTO_IPV6/IP_V6ONLY socket option. * * @par Examples * Setting the option: * @code * boost::asio::ip::tcp::socket socket(io_service); * ... * boost::asio::ip::v6_only option(true); * socket.set_option(option); * @endcode * * @par * Getting the current option value: * @code * boost::asio::ip::tcp::socket socket(io_service); * ... * boost::asio::ip::v6_only option; * socket.get_option(option); * bool v6_only = option.value(); * @endcode * * @par Concepts: * GettableSocketOption, SettableSocketOption. */ #if defined(GENERATING_DOCUMENTATION) typedef implementation_defined v6_only; #elif defined(IPV6_V6ONLY) typedef boost::asio::detail::socket_option::boolean< IPPROTO_IPV6, IPV6_V6ONLY> v6_only; #else typedef boost::asio::detail::socket_option::boolean< boost::asio::detail::custom_socket_option_level, boost::asio::detail::always_fail_option> v6_only; #endif } // namespace ip } // namespace asio } // namespace boost #include <boost/asio/detail/pop_options.hpp> #endif // BOOST_ASIO_IP_V6_ONLY_HPP