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//
// resolver_service.hpp
// ~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2010 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_SERVICE_HPP
#define BOOST_ASIO_IP_RESOLVER_SERVICE_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/error.hpp>
#include <boost/asio/io_service.hpp>
#include <boost/asio/ip/basic_resolver_iterator.hpp>
#include <boost/asio/ip/basic_resolver_query.hpp>
#include <boost/asio/detail/resolver_service.hpp>
#include <boost/asio/detail/service_base.hpp>
namespace boost {
namespace asio {
namespace ip {
/// Default service implementation for a resolver.
template <typename InternetProtocol>
class resolver_service
#if defined(GENERATING_DOCUMENTATION)
: public boost::asio::io_service::service
#else
: public boost::asio::detail::service_base<
resolver_service<InternetProtocol> >
#endif
{
public:
#if defined(GENERATING_DOCUMENTATION)
/// The unique service identifier.
static boost::asio::io_service::id id;
#endif
/// The protocol type.
typedef InternetProtocol protocol_type;
/// The endpoint type.
typedef typename InternetProtocol::endpoint endpoint_type;
/// The query type.
typedef basic_resolver_query<InternetProtocol> query_type;
/// The iterator type.
typedef basic_resolver_iterator<InternetProtocol> iterator_type;
private:
// The type of the platform-specific implementation.
typedef boost::asio::detail::resolver_service<InternetProtocol>
service_impl_type;
public:
/// The type of a resolver implementation.
#if defined(GENERATING_DOCUMENTATION)
typedef implementation_defined implementation_type;
#else
typedef typename service_impl_type::implementation_type implementation_type;
#endif
/// Construct a new resolver service for the specified io_service.
explicit resolver_service(boost::asio::io_service& io_service)
: boost::asio::detail::service_base<
resolver_service<InternetProtocol> >(io_service),
service_impl_(boost::asio::use_service<service_impl_type>(io_service))
{
}
/// Destroy all user-defined handler objects owned by the service.
void shutdown_service()
{
}
/// Construct a new resolver implementation.
void construct(implementation_type& impl)
{
service_impl_.construct(impl);
}
/// Destroy a resolver implementation.
void destroy(implementation_type& impl)
{
service_impl_.destroy(impl);
}
/// Cancel pending asynchronous operations.
void cancel(implementation_type& impl)
{
service_impl_.cancel(impl);
}
/// Resolve a query to a list of entries.
iterator_type resolve(implementation_type& impl, const query_type& query,
boost::system::error_code& ec)
{
return service_impl_.resolve(impl, query, ec);
}
/// Asynchronously resolve a query to a list of entries.
template <typename Handler>
void async_resolve(implementation_type& impl, const query_type& query,
Handler handler)
{
service_impl_.async_resolve(impl, query, handler);
}
/// Resolve an endpoint to a list of entries.
iterator_type resolve(implementation_type& impl,
const endpoint_type& endpoint, boost::system::error_code& ec)
{
return service_impl_.resolve(impl, endpoint, ec);
}
/// Asynchronously resolve an endpoint to a list of entries.
template <typename ResolveHandler>
void async_resolve(implementation_type& impl, const endpoint_type& endpoint,
ResolveHandler handler)
{
return service_impl_.async_resolve(impl, endpoint, handler);
}
private:
// The service that provides the platform-specific implementation.
service_impl_type& service_impl_;
};
} // namespace ip
} // namespace asio
} // namespace boost
#include <boost/asio/detail/pop_options.hpp>
#endif // BOOST_ASIO_IP_RESOLVER_SERVICE_HPP
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