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- //
- // ip/unicast.hpp
- // ~~~~~~~~~~~~~~
- //
- // Copyright (c) 2003-2019 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_IP_UNICAST_HPP
- #define ASIO_IP_UNICAST_HPP
-
- #if defined(_MSC_VER) && (_MSC_VER >= 1200)
- # pragma once
- #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
- #include "asio/detail/config.hpp"
- #include <cstddef>
- #include "asio/ip/detail/socket_option.hpp"
-
- #include "asio/detail/push_options.hpp"
-
- namespace asio {
- namespace ip {
- namespace unicast {
-
- /// Socket option for time-to-live associated with outgoing unicast packets.
- /**
- * Implements the IPPROTO_IP/IP_UNICAST_TTL socket option.
- *
- * @par Examples
- * Setting the option:
- * @code
- * asio::ip::udp::socket socket(my_context);
- * ...
- * asio::ip::unicast::hops option(4);
- * socket.set_option(option);
- * @endcode
- *
- * @par
- * Getting the current option value:
- * @code
- * asio::ip::udp::socket socket(my_context);
- * ...
- * asio::ip::unicast::hops option;
- * socket.get_option(option);
- * int ttl = option.value();
- * @endcode
- *
- * @par Concepts:
- * GettableSocketOption, SettableSocketOption.
- */
- #if defined(GENERATING_DOCUMENTATION)
- typedef implementation_defined hops;
- #else
- typedef asio::ip::detail::socket_option::unicast_hops<
- ASIO_OS_DEF(IPPROTO_IP),
- ASIO_OS_DEF(IP_TTL),
- ASIO_OS_DEF(IPPROTO_IPV6),
- ASIO_OS_DEF(IPV6_UNICAST_HOPS)> hops;
- #endif
-
- } // namespace unicast
- } // namespace ip
- } // namespace asio
-
- #include "asio/detail/pop_options.hpp"
-
- #endif // ASIO_IP_UNICAST_HPP
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