Chris@16: //
Chris@16: // detail/winrt_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_WINRT_RESOLVER_SERVICE_HPP
Chris@16: #define BOOST_ASIO_DETAIL_WINRT_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/bind_handler.hpp>
Chris@16: #include <boost/asio/detail/socket_ops.hpp>
Chris@16: #include <boost/asio/detail/winrt_async_manager.hpp>
Chris@16: #include <boost/asio/detail/winrt_resolve_op.hpp>
Chris@16: #include <boost/asio/detail/winrt_utils.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 winrt_resolver_service
Chris@16: {
Chris@16: public:
Chris@16:   // The implementation type of the resolver. A cancellation token is used to
Chris@16:   // indicate to the asynchronous operation that the operation has been
Chris@16:   // 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:   winrt_resolver_service(boost::asio::io_service& io_service)
Chris@16:     : io_service_(use_service<io_service_impl>(io_service)),
Chris@16:       async_manager_(use_service<winrt_async_manager>(io_service))
Chris@16:   {
Chris@16:   }
Chris@16: 
Chris@16:   // Destructor.
Chris@16:   ~winrt_resolver_service()
Chris@16:   {
Chris@16:   }
Chris@16: 
Chris@16:   // Destroy all user-defined handler objects owned by the service.
Chris@16:   void shutdown_service()
Chris@16:   {
Chris@16:   }
Chris@16: 
Chris@16:   // Perform any fork-related housekeeping.
Chris@16:   void fork_service(boost::asio::io_service::fork_event)
Chris@16:   {
Chris@16:   }
Chris@16: 
Chris@16:   // Construct a new resolver implementation.
Chris@16:   void construct(implementation_type&)
Chris@16:   {
Chris@16:   }
Chris@16: 
Chris@16:   // Destroy a resolver implementation.
Chris@16:   void destroy(implementation_type&)
Chris@16:   {
Chris@16:   }
Chris@16: 
Chris@16:   // Cancel pending asynchronous operations.
Chris@16:   void cancel(implementation_type&)
Chris@16:   {
Chris@16:   }
Chris@16: 
Chris@16:   // Resolve a query to a list of entries.
Chris@16:   iterator_type resolve(implementation_type&,
Chris@16:       const query_type& query, boost::system::error_code& ec)
Chris@16:   {
Chris@16:     try
Chris@16:     {
Chris@16:       using namespace Windows::Networking::Sockets;
Chris@16:       auto endpoint_pairs = async_manager_.sync(
Chris@16:           DatagramSocket::GetEndpointPairsAsync(
Chris@16:             winrt_utils::host_name(query.host_name()),
Chris@16:             winrt_utils::string(query.service_name())), ec);
Chris@16: 
Chris@16:       if (ec)
Chris@16:         return iterator_type();
Chris@16: 
Chris@16:       return iterator_type::create(
Chris@16:           endpoint_pairs, query.hints(),
Chris@16:           query.host_name(), query.service_name());
Chris@16:     }
Chris@16:     catch (Platform::Exception^ e)
Chris@16:     {
Chris@16:       ec = boost::system::error_code(e->HResult,
Chris@16:           boost::system::system_category());
Chris@16:       return iterator_type();
Chris@16:     }
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&,
Chris@16:       const query_type& query, Handler& handler)
Chris@16:   {
Chris@16:     bool is_continuation =
Chris@16:       boost_asio_handler_cont_helpers::is_continuation(handler);
Chris@16: 
Chris@16:     // Allocate and construct an operation to wrap the handler.
Chris@16:     typedef winrt_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(query, handler);
Chris@16: 
Chris@16:     BOOST_ASIO_HANDLER_CREATION((p.p, "resolver", &impl, "async_resolve"));
Chris@16: 
Chris@16:     try
Chris@16:     {
Chris@16:       using namespace Windows::Networking::Sockets;
Chris@16:       async_manager_.async(DatagramSocket::GetEndpointPairsAsync(
Chris@16:             winrt_utils::host_name(query.host_name()),
Chris@16:             winrt_utils::string(query.service_name())), p.p);
Chris@16:       p.v = p.p = 0;
Chris@16:     }
Chris@16:     catch (Platform::Exception^ e)
Chris@16:     {
Chris@16:       p.p->ec_ = boost::system::error_code(
Chris@16:           e->HResult, boost::system::system_category());
Chris@16:       io_service_.post_immediate_completion(p.p, is_continuation);
Chris@16:       p.v = p.p = 0;
Chris@16:     }
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&, boost::system::error_code& ec)
Chris@16:   {
Chris@16:     ec = boost::asio::error::operation_not_supported;
Chris@16:     return iterator_type();
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&,
Chris@16:       const endpoint_type&, Handler& handler)
Chris@16:   {
Chris@16:     boost::system::error_code ec = boost::asio::error::operation_not_supported;
Chris@16:     const iterator_type iterator;
Chris@16:     io_service_.get_io_service().post(
Chris@16:         detail::bind_handler(handler, ec, iterator));
Chris@16:   }
Chris@16: 
Chris@16: private:
Chris@16:   io_service_impl& io_service_;
Chris@16:   winrt_async_manager& async_manager_;
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_WINRT_RESOLVER_SERVICE_HPP