153 lines
4.1 KiB
C++
153 lines
4.1 KiB
C++
//
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// ip/resolver_service.hpp
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// ~~~~~~~~~~~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2015 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_RESOLVER_SERVICE_HPP
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#define ASIO_IP_RESOLVER_SERVICE_HPP
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#include "asio/detail/config.hpp"
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#include "asio/async_result.hpp"
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#include "asio/error_code.hpp"
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#include "asio/io_service.hpp"
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#include "asio/ip/basic_resolver_iterator.hpp"
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#include "asio/ip/basic_resolver_query.hpp"
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# include "asio/detail/resolver_service.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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/// Default service implementation for a resolver.
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template <typename InternetProtocol>
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class resolver_service
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: public asio::detail::service_base<
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resolver_service<InternetProtocol> >
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{
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public:
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/// The protocol type.
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typedef InternetProtocol protocol_type;
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/// The endpoint type.
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typedef typename InternetProtocol::endpoint endpoint_type;
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/// The query type.
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typedef basic_resolver_query<InternetProtocol> query_type;
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/// The iterator type.
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typedef basic_resolver_iterator<InternetProtocol> iterator_type;
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private:
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// The type of the platform-specific implementation.
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typedef asio::detail::resolver_service<InternetProtocol>
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service_impl_type;
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public:
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/// The type of a resolver implementation.
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typedef typename service_impl_type::implementation_type implementation_type;
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/// Construct a new resolver service for the specified io_service.
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explicit resolver_service(asio::io_service& io_service)
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: asio::detail::service_base<
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resolver_service<InternetProtocol> >(io_service),
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service_impl_(io_service)
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{
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}
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/// Construct a new resolver implementation.
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void construct(implementation_type& impl)
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{
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service_impl_.construct(impl);
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}
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/// Destroy a resolver implementation.
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void destroy(implementation_type& impl)
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{
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service_impl_.destroy(impl);
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}
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/// Cancel pending asynchronous operations.
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void cancel(implementation_type& impl)
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{
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service_impl_.cancel(impl);
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}
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/// Resolve a query to a list of entries.
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iterator_type resolve(implementation_type& impl, const query_type& query,
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asio::error_code& ec)
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{
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return service_impl_.resolve(impl, query, ec);
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}
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/// Asynchronously resolve a query to a list of entries.
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template <typename ResolveHandler>
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ASIO_INITFN_RESULT_TYPE(ResolveHandler,
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void (asio::error_code, iterator_type))
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async_resolve(implementation_type& impl, const query_type& query,
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ASIO_MOVE_ARG(ResolveHandler) handler)
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{
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asio::detail::async_result_init<
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ResolveHandler, void (asio::error_code, iterator_type)> init(
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ASIO_MOVE_CAST(ResolveHandler)(handler));
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service_impl_.async_resolve(impl, query, init.handler);
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return init.result.get();
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}
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/// Resolve an endpoint to a list of entries.
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iterator_type resolve(implementation_type& impl,
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const endpoint_type& endpoint, asio::error_code& ec)
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{
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return service_impl_.resolve(impl, endpoint, ec);
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}
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/// Asynchronously resolve an endpoint to a list of entries.
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template <typename ResolveHandler>
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ASIO_INITFN_RESULT_TYPE(ResolveHandler,
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void (asio::error_code, iterator_type))
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async_resolve(implementation_type& impl, const endpoint_type& endpoint,
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ASIO_MOVE_ARG(ResolveHandler) handler)
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{
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asio::detail::async_result_init<
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ResolveHandler, void (asio::error_code, iterator_type)> init(
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ASIO_MOVE_CAST(ResolveHandler)(handler));
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service_impl_.async_resolve(impl, endpoint, init.handler);
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return init.result.get();
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}
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private:
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// Destroy all user-defined handler objects owned by the service.
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void shutdown_service()
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{
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service_impl_.shutdown_service();
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}
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// Perform any fork-related housekeeping.
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void fork_service(asio::io_service::fork_event event)
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{
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service_impl_.fork_service(event);
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}
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// The platform-specific implementation.
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service_impl_type service_impl_;
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};
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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_RESOLVER_SERVICE_HPP
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