Chris@16: //
Chris@16: // detail/resolver_service.hpp
Chris@16: // ~~~~~~~~~~~~~~~~~~~~~~~~~~~
Chris@16: //
Chris@101: // Copyright (c) 2003-2015 Christopher M. Kohlhoff (chris at kohlhoff dot com)
Chris@16: //
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@16: // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: 
Chris@16: #ifndef BOOST_ASIO_DETAIL_RESOLVER_SERVICE_HPP
Chris@16: #define BOOST_ASIO_DETAIL_RESOLVER_SERVICE_HPP
Chris@16: 
Chris@16: #if defined(_MSC_VER) && (_MSC_VER >= 1200)
Chris@16: # pragma once
Chris@16: #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
Chris@16: 
Chris@16: #include <boost/asio/detail/config.hpp>
Chris@16: 
Chris@16: #if !defined(BOOST_ASIO_WINDOWS_RUNTIME)
Chris@16: 
Chris@16: #include <boost/asio/ip/basic_resolver_iterator.hpp>
Chris@16: #include <boost/asio/ip/basic_resolver_query.hpp>
Chris@16: #include <boost/asio/detail/addressof.hpp>
Chris@16: #include <boost/asio/detail/resolve_endpoint_op.hpp>
Chris@16: #include <boost/asio/detail/resolve_op.hpp>
Chris@16: #include <boost/asio/detail/resolver_service_base.hpp>
Chris@16: 
Chris@16: #include <boost/asio/detail/push_options.hpp>
Chris@16: 
Chris@16: namespace boost {
Chris@16: namespace asio {
Chris@16: namespace detail {
Chris@16: 
Chris@16: template <typename Protocol>
Chris@16: class resolver_service : public resolver_service_base
Chris@16: {
Chris@16: public:
Chris@16:   // The implementation type of the resolver. A cancellation token is used to
Chris@16:   // indicate to the background thread that the operation has been cancelled.
Chris@16:   typedef socket_ops::shared_cancel_token_type implementation_type;
Chris@16: 
Chris@16:   // The endpoint type.
Chris@16:   typedef typename Protocol::endpoint endpoint_type;
Chris@16: 
Chris@16:   // The query type.
Chris@16:   typedef boost::asio::ip::basic_resolver_query<Protocol> query_type;
Chris@16: 
Chris@16:   // The iterator type.
Chris@16:   typedef boost::asio::ip::basic_resolver_iterator<Protocol> iterator_type;
Chris@16: 
Chris@16:   // Constructor.
Chris@16:   resolver_service(boost::asio::io_service& io_service)
Chris@16:     : resolver_service_base(io_service)
Chris@16:   {
Chris@16:   }
Chris@16: 
Chris@16:   // Resolve a query to a list of entries.
Chris@16:   iterator_type resolve(implementation_type&, const query_type& query,
Chris@16:       boost::system::error_code& ec)
Chris@16:   {
Chris@16:     boost::asio::detail::addrinfo_type* address_info = 0;
Chris@16: 
Chris@16:     socket_ops::getaddrinfo(query.host_name().c_str(),
Chris@16:         query.service_name().c_str(), query.hints(), &address_info, ec);
Chris@16:     auto_addrinfo auto_address_info(address_info);
Chris@16: 
Chris@16:     return ec ? iterator_type() : iterator_type::create(
Chris@16:         address_info, query.host_name(), query.service_name());
Chris@16:   }
Chris@16: 
Chris@16:   // Asynchronously resolve a query to a list of entries.
Chris@16:   template <typename Handler>
Chris@16:   void async_resolve(implementation_type& impl,
Chris@16:       const query_type& query, Handler& handler)
Chris@16:   {
Chris@16:     // Allocate and construct an operation to wrap the handler.
Chris@16:     typedef resolve_op<Protocol, Handler> op;
Chris@16:     typename op::ptr p = { boost::asio::detail::addressof(handler),
Chris@16:       boost_asio_handler_alloc_helpers::allocate(
Chris@16:         sizeof(op), handler), 0 };
Chris@16:     p.p = new (p.v) op(impl, query, io_service_impl_, handler);
Chris@16: 
Chris@16:     BOOST_ASIO_HANDLER_CREATION((p.p, "resolver", &impl, "async_resolve"));
Chris@16: 
Chris@16:     start_resolve_op(p.p);
Chris@16:     p.v = p.p = 0;
Chris@16:   }
Chris@16: 
Chris@16:   // Resolve an endpoint to a list of entries.
Chris@16:   iterator_type resolve(implementation_type&,
Chris@16:       const endpoint_type& endpoint, boost::system::error_code& ec)
Chris@16:   {
Chris@16:     char host_name[NI_MAXHOST];
Chris@16:     char service_name[NI_MAXSERV];
Chris@16:     socket_ops::sync_getnameinfo(endpoint.data(), endpoint.size(),
Chris@16:         host_name, NI_MAXHOST, service_name, NI_MAXSERV,
Chris@16:         endpoint.protocol().type(), ec);
Chris@16: 
Chris@16:     return ec ? iterator_type() : iterator_type::create(
Chris@16:         endpoint, host_name, service_name);
Chris@16:   }
Chris@16: 
Chris@16:   // Asynchronously resolve an endpoint to a list of entries.
Chris@16:   template <typename Handler>
Chris@16:   void async_resolve(implementation_type& impl,
Chris@16:       const endpoint_type& endpoint, Handler& handler)
Chris@16:   {
Chris@16:     // Allocate and construct an operation to wrap the handler.
Chris@16:     typedef resolve_endpoint_op<Protocol, Handler> op;
Chris@16:     typename op::ptr p = { boost::asio::detail::addressof(handler),
Chris@16:       boost_asio_handler_alloc_helpers::allocate(
Chris@16:         sizeof(op), handler), 0 };
Chris@16:     p.p = new (p.v) op(impl, endpoint, io_service_impl_, handler);
Chris@16: 
Chris@16:     BOOST_ASIO_HANDLER_CREATION((p.p, "resolver", &impl, "async_resolve"));
Chris@16: 
Chris@16:     start_resolve_op(p.p);
Chris@16:     p.v = p.p = 0;
Chris@16:   }
Chris@16: };
Chris@16: 
Chris@16: } // namespace detail
Chris@16: } // namespace asio
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #include <boost/asio/detail/pop_options.hpp>
Chris@16: 
Chris@16: #endif // !defined(BOOST_ASIO_WINDOWS_RUNTIME)
Chris@16: 
Chris@16: #endif // BOOST_ASIO_DETAIL_RESOLVER_SERVICE_HPP