| // |
| // resolver_query_base.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_RESOLVER_QUERY_BASE_HPP |
| #define BOOST_ASIO_IP_RESOLVER_QUERY_BASE_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/push_options.hpp> |
| #include <boost/config.hpp> |
| #include <boost/detail/workaround.hpp> |
| #include <boost/asio/detail/pop_options.hpp> |
| |
| #include <boost/asio/detail/socket_types.hpp> |
| |
| namespace boost { |
| namespace asio { |
| namespace ip { |
| |
| /// The resolver_query_base class is used as a base for the |
| /// basic_resolver_query class templates to provide a common place to define |
| /// the flag constants. |
| class resolver_query_base |
| { |
| public: |
| #if defined(GENERATING_DOCUMENTATION) |
| /// Determine the canonical name of the host specified in the query. |
| static const int canonical_name = implementation_defined; |
| |
| /// Indicate that returned endpoint is intended for use as a locally bound |
| /// socket endpoint. |
| static const int passive = implementation_defined; |
| |
| /// Host name should be treated as a numeric string defining an IPv4 or IPv6 |
| /// address and no name resolution should be attempted. |
| static const int numeric_host = implementation_defined; |
| |
| /// Service name should be treated as a numeric string defining a port number |
| /// and no name resolution should be attempted. |
| static const int numeric_service = implementation_defined; |
| |
| /// If the query protocol family is specified as IPv6, return IPv4-mapped |
| /// IPv6 addresses on finding no IPv6 addresses. |
| static const int v4_mapped = implementation_defined; |
| |
| /// If used with v4_mapped, return all matching IPv6 and IPv4 addresses. |
| static const int all_matching = implementation_defined; |
| |
| /// Only return IPv4 addresses if a non-loopback IPv4 address is configured |
| /// for the system. Only return IPv6 addresses if a non-loopback IPv6 address |
| /// is configured for the system. |
| static const int address_configured = implementation_defined; |
| #else |
| BOOST_STATIC_CONSTANT(int, canonical_name = AI_CANONNAME); |
| BOOST_STATIC_CONSTANT(int, passive = AI_PASSIVE); |
| BOOST_STATIC_CONSTANT(int, numeric_host = AI_NUMERICHOST); |
| # if defined(AI_NUMERICSERV) |
| BOOST_STATIC_CONSTANT(int, numeric_service = AI_NUMERICSERV); |
| # else |
| BOOST_STATIC_CONSTANT(int, numeric_service = 0); |
| # endif |
| // Note: QNX Neutrino 6.3 defines AI_V4MAPPED, AI_ALL and AI_ADDRCONFIG but |
| // does not implement them. Therefore they are specifically excluded here. |
| # if defined(AI_V4MAPPED) && !defined(__QNXNTO__) |
| BOOST_STATIC_CONSTANT(int, v4_mapped = AI_V4MAPPED); |
| # else |
| BOOST_STATIC_CONSTANT(int, v4_mapped = 0); |
| # endif |
| # if defined(AI_ALL) && !defined(__QNXNTO__) |
| BOOST_STATIC_CONSTANT(int, all_matching = AI_ALL); |
| # else |
| BOOST_STATIC_CONSTANT(int, all_matching = 0); |
| # endif |
| # if defined(AI_ADDRCONFIG) && !defined(__QNXNTO__) |
| BOOST_STATIC_CONSTANT(int, address_configured = AI_ADDRCONFIG); |
| # else |
| BOOST_STATIC_CONSTANT(int, address_configured = 0); |
| # endif |
| #endif |
| |
| protected: |
| /// Protected destructor to prevent deletion through this type. |
| ~resolver_query_base() |
| { |
| } |
| |
| #if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564)) |
| private: |
| // Workaround to enable the empty base optimisation with Borland C++. |
| char dummy_; |
| #endif |
| }; |
| |
| } // namespace ip |
| } // namespace asio |
| } // namespace boost |
| |
| #include <boost/asio/detail/pop_options.hpp> |
| |
| #endif // BOOST_ASIO_IP_RESOLVER_QUERY_BASE_HPP |