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71 lines
1.6 KiB
C++
71 lines
1.6 KiB
C++
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//
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// ip/unicast.hpp
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// ~~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2022 Christopher M. Kohlhoff (chris at kohlhoff dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifndef ASIO_IP_UNICAST_HPP
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#define ASIO_IP_UNICAST_HPP
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#if defined(_MSC_VER) && (_MSC_VER >= 1200)
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# pragma once
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#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
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#include "asio/detail/config.hpp"
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#include <cstddef>
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#include "asio/ip/detail/socket_option.hpp"
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#include "asio/detail/push_options.hpp"
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namespace asio {
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namespace ip {
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namespace unicast {
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/// Socket option for time-to-live associated with outgoing unicast packets.
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/**
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* Implements the IPPROTO_IP/IP_UNICAST_TTL socket option.
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*
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* @par Examples
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* Setting the option:
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* @code
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* asio::ip::udp::socket socket(my_context);
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* ...
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* asio::ip::unicast::hops option(4);
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* socket.set_option(option);
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* @endcode
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*
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* @par
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* Getting the current option value:
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* @code
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* asio::ip::udp::socket socket(my_context);
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* ...
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* asio::ip::unicast::hops option;
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* socket.get_option(option);
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* int ttl = option.value();
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* @endcode
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*
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* @par Concepts:
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* GettableSocketOption, SettableSocketOption.
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*/
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#if defined(GENERATING_DOCUMENTATION)
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typedef implementation_defined hops;
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#else
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typedef asio::ip::detail::socket_option::unicast_hops<
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ASIO_OS_DEF(IPPROTO_IP),
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ASIO_OS_DEF(IP_TTL),
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ASIO_OS_DEF(IPPROTO_IPV6),
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ASIO_OS_DEF(IPV6_UNICAST_HOPS)> hops;
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#endif
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} // namespace unicast
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} // namespace ip
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} // namespace asio
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#include "asio/detail/pop_options.hpp"
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#endif // ASIO_IP_UNICAST_HPP
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