Chris@16: //
Chris@16: // detail/reactive_socket_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_REACTIVE_SOCKET_SERVICE_HPP
Chris@16: #define BOOST_ASIO_DETAIL_REACTIVE_SOCKET_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_HAS_IOCP)
Chris@16: 
Chris@16: #include <boost/asio/buffer.hpp>
Chris@16: #include <boost/asio/error.hpp>
Chris@16: #include <boost/asio/io_service.hpp>
Chris@16: #include <boost/asio/socket_base.hpp>
Chris@16: #include <boost/asio/detail/addressof.hpp>
Chris@16: #include <boost/asio/detail/buffer_sequence_adapter.hpp>
Chris@16: #include <boost/asio/detail/noncopyable.hpp>
Chris@16: #include <boost/asio/detail/reactive_null_buffers_op.hpp>
Chris@16: #include <boost/asio/detail/reactive_socket_accept_op.hpp>
Chris@16: #include <boost/asio/detail/reactive_socket_connect_op.hpp>
Chris@16: #include <boost/asio/detail/reactive_socket_recvfrom_op.hpp>
Chris@16: #include <boost/asio/detail/reactive_socket_sendto_op.hpp>
Chris@16: #include <boost/asio/detail/reactive_socket_service_base.hpp>
Chris@16: #include <boost/asio/detail/reactor.hpp>
Chris@16: #include <boost/asio/detail/reactor_op.hpp>
Chris@16: #include <boost/asio/detail/socket_holder.hpp>
Chris@16: #include <boost/asio/detail/socket_ops.hpp>
Chris@16: #include <boost/asio/detail/socket_types.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 reactive_socket_service :
Chris@16:   public reactive_socket_service_base
Chris@16: {
Chris@16: public:
Chris@16:   // The protocol type.
Chris@16:   typedef Protocol protocol_type;
Chris@16: 
Chris@16:   // The endpoint type.
Chris@16:   typedef typename Protocol::endpoint endpoint_type;
Chris@16: 
Chris@16:   // The native type of a socket.
Chris@16:   typedef socket_type native_handle_type;
Chris@16: 
Chris@16:   // The implementation type of the socket.
Chris@16:   struct implementation_type :
Chris@16:     reactive_socket_service_base::base_implementation_type
Chris@16:   {
Chris@16:     // Default constructor.
Chris@16:     implementation_type()
Chris@16:       : protocol_(endpoint_type().protocol())
Chris@16:     {
Chris@16:     }
Chris@16: 
Chris@16:     // The protocol associated with the socket.
Chris@16:     protocol_type protocol_;
Chris@16:   };
Chris@16: 
Chris@16:   // Constructor.
Chris@16:   reactive_socket_service(boost::asio::io_service& io_service)
Chris@16:     : reactive_socket_service_base(io_service)
Chris@16:   {
Chris@16:   }
Chris@16: 
Chris@16:   // Move-construct a new socket implementation.
Chris@16:   void move_construct(implementation_type& impl,
Chris@16:       implementation_type& other_impl)
Chris@16:   {
Chris@16:     this->base_move_construct(impl, other_impl);
Chris@16: 
Chris@16:     impl.protocol_ = other_impl.protocol_;
Chris@16:     other_impl.protocol_ = endpoint_type().protocol();
Chris@16:   }
Chris@16: 
Chris@16:   // Move-assign from another socket implementation.
Chris@16:   void move_assign(implementation_type& impl,
Chris@16:       reactive_socket_service_base& other_service,
Chris@16:       implementation_type& other_impl)
Chris@16:   {
Chris@16:     this->base_move_assign(impl, other_service, other_impl);
Chris@16: 
Chris@16:     impl.protocol_ = other_impl.protocol_;
Chris@16:     other_impl.protocol_ = endpoint_type().protocol();
Chris@16:   }
Chris@16: 
Chris@16:   // Move-construct a new socket implementation from another protocol type.
Chris@16:   template <typename Protocol1>
Chris@16:   void converting_move_construct(implementation_type& impl,
Chris@16:       typename reactive_socket_service<
Chris@16:         Protocol1>::implementation_type& other_impl)
Chris@16:   {
Chris@16:     this->base_move_construct(impl, other_impl);
Chris@16: 
Chris@16:     impl.protocol_ = protocol_type(other_impl.protocol_);
Chris@16:     other_impl.protocol_ = typename Protocol1::endpoint().protocol();
Chris@16:   }
Chris@16: 
Chris@16:   // Open a new socket implementation.
Chris@16:   boost::system::error_code open(implementation_type& impl,
Chris@16:       const protocol_type& protocol, boost::system::error_code& ec)
Chris@16:   {
Chris@16:     if (!do_open(impl, protocol.family(),
Chris@16:           protocol.type(), protocol.protocol(), ec))
Chris@16:       impl.protocol_ = protocol;
Chris@16:     return ec;
Chris@16:   }
Chris@16: 
Chris@16:   // Assign a native socket to a socket implementation.
Chris@16:   boost::system::error_code assign(implementation_type& impl,
Chris@16:       const protocol_type& protocol, const native_handle_type& native_socket,
Chris@16:       boost::system::error_code& ec)
Chris@16:   {
Chris@16:     if (!do_assign(impl, protocol.type(), native_socket, ec))
Chris@16:       impl.protocol_ = protocol;
Chris@16:     return ec;
Chris@16:   }
Chris@16: 
Chris@16:   // Get the native socket representation.
Chris@16:   native_handle_type native_handle(implementation_type& impl)
Chris@16:   {
Chris@16:     return impl.socket_;
Chris@16:   }
Chris@16: 
Chris@16:   // Bind the socket to the specified local endpoint.
Chris@16:   boost::system::error_code bind(implementation_type& impl,
Chris@16:       const endpoint_type& endpoint, boost::system::error_code& ec)
Chris@16:   {
Chris@16:     socket_ops::bind(impl.socket_, endpoint.data(), endpoint.size(), ec);
Chris@16:     return ec;
Chris@16:   }
Chris@16: 
Chris@16:   // Set a socket option.
Chris@16:   template <typename Option>
Chris@16:   boost::system::error_code set_option(implementation_type& impl,
Chris@16:       const Option& option, boost::system::error_code& ec)
Chris@16:   {
Chris@16:     socket_ops::setsockopt(impl.socket_, impl.state_,
Chris@16:         option.level(impl.protocol_), option.name(impl.protocol_),
Chris@16:         option.data(impl.protocol_), option.size(impl.protocol_), ec);
Chris@16:     return ec;
Chris@16:   }
Chris@16: 
Chris@16:   // Set a socket option.
Chris@16:   template <typename Option>
Chris@16:   boost::system::error_code get_option(const implementation_type& impl,
Chris@16:       Option& option, boost::system::error_code& ec) const
Chris@16:   {
Chris@16:     std::size_t size = option.size(impl.protocol_);
Chris@16:     socket_ops::getsockopt(impl.socket_, impl.state_,
Chris@16:         option.level(impl.protocol_), option.name(impl.protocol_),
Chris@16:         option.data(impl.protocol_), &size, ec);
Chris@16:     if (!ec)
Chris@16:       option.resize(impl.protocol_, size);
Chris@16:     return ec;
Chris@16:   }
Chris@16: 
Chris@16:   // Get the local endpoint.
Chris@16:   endpoint_type local_endpoint(const implementation_type& impl,
Chris@16:       boost::system::error_code& ec) const
Chris@16:   {
Chris@16:     endpoint_type endpoint;
Chris@16:     std::size_t addr_len = endpoint.capacity();
Chris@16:     if (socket_ops::getsockname(impl.socket_, endpoint.data(), &addr_len, ec))
Chris@16:       return endpoint_type();
Chris@16:     endpoint.resize(addr_len);
Chris@16:     return endpoint;
Chris@16:   }
Chris@16: 
Chris@16:   // Get the remote endpoint.
Chris@16:   endpoint_type remote_endpoint(const implementation_type& impl,
Chris@16:       boost::system::error_code& ec) const
Chris@16:   {
Chris@16:     endpoint_type endpoint;
Chris@16:     std::size_t addr_len = endpoint.capacity();
Chris@16:     if (socket_ops::getpeername(impl.socket_,
Chris@16:           endpoint.data(), &addr_len, false, ec))
Chris@16:       return endpoint_type();
Chris@16:     endpoint.resize(addr_len);
Chris@16:     return endpoint;
Chris@16:   }
Chris@16: 
Chris@16:   // Send a datagram to the specified endpoint. Returns the number of bytes
Chris@16:   // sent.
Chris@16:   template <typename ConstBufferSequence>
Chris@16:   size_t send_to(implementation_type& impl, const ConstBufferSequence& buffers,
Chris@16:       const endpoint_type& destination, socket_base::message_flags flags,
Chris@16:       boost::system::error_code& ec)
Chris@16:   {
Chris@16:     buffer_sequence_adapter<boost::asio::const_buffer,
Chris@16:         ConstBufferSequence> bufs(buffers);
Chris@16: 
Chris@16:     return socket_ops::sync_sendto(impl.socket_, impl.state_,
Chris@16:         bufs.buffers(), bufs.count(), flags,
Chris@16:         destination.data(), destination.size(), ec);
Chris@16:   }
Chris@16: 
Chris@16:   // Wait until data can be sent without blocking.
Chris@16:   size_t send_to(implementation_type& impl, const null_buffers&,
Chris@16:       const endpoint_type&, socket_base::message_flags,
Chris@16:       boost::system::error_code& ec)
Chris@16:   {
Chris@16:     // Wait for socket to become ready.
Chris@16:     socket_ops::poll_write(impl.socket_, impl.state_, ec);
Chris@16: 
Chris@16:     return 0;
Chris@16:   }
Chris@16: 
Chris@16:   // Start an asynchronous send. The data being sent must be valid for the
Chris@16:   // lifetime of the asynchronous operation.
Chris@16:   template <typename ConstBufferSequence, typename Handler>
Chris@16:   void async_send_to(implementation_type& impl,
Chris@16:       const ConstBufferSequence& buffers,
Chris@16:       const endpoint_type& destination, socket_base::message_flags flags,
Chris@16:       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 reactive_socket_sendto_op<ConstBufferSequence,
Chris@16:         endpoint_type, 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.socket_, buffers, destination, flags, handler);
Chris@16: 
Chris@16:     BOOST_ASIO_HANDLER_CREATION((p.p, "socket", &impl, "async_send_to"));
Chris@16: 
Chris@16:     start_op(impl, reactor::write_op, p.p, is_continuation, true, false);
Chris@16:     p.v = p.p = 0;
Chris@16:   }
Chris@16: 
Chris@16:   // Start an asynchronous wait until data can be sent without blocking.
Chris@16:   template <typename Handler>
Chris@16:   void async_send_to(implementation_type& impl, const null_buffers&,
Chris@16:       const endpoint_type&, socket_base::message_flags, 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 reactive_null_buffers_op<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(handler);
Chris@16: 
Chris@16:     BOOST_ASIO_HANDLER_CREATION((p.p, "socket",
Chris@16:           &impl, "async_send_to(null_buffers)"));
Chris@16: 
Chris@16:     start_op(impl, reactor::write_op, p.p, is_continuation, false, false);
Chris@16:     p.v = p.p = 0;
Chris@16:   }
Chris@16: 
Chris@16:   // Receive a datagram with the endpoint of the sender. Returns the number of
Chris@16:   // bytes received.
Chris@16:   template <typename MutableBufferSequence>
Chris@16:   size_t receive_from(implementation_type& impl,
Chris@16:       const MutableBufferSequence& buffers,
Chris@16:       endpoint_type& sender_endpoint, socket_base::message_flags flags,
Chris@16:       boost::system::error_code& ec)
Chris@16:   {
Chris@16:     buffer_sequence_adapter<boost::asio::mutable_buffer,
Chris@16:         MutableBufferSequence> bufs(buffers);
Chris@16: 
Chris@16:     std::size_t addr_len = sender_endpoint.capacity();
Chris@16:     std::size_t bytes_recvd = socket_ops::sync_recvfrom(
Chris@16:         impl.socket_, impl.state_, bufs.buffers(), bufs.count(),
Chris@16:         flags, sender_endpoint.data(), &addr_len, ec);
Chris@16: 
Chris@16:     if (!ec)
Chris@16:       sender_endpoint.resize(addr_len);
Chris@16: 
Chris@16:     return bytes_recvd;
Chris@16:   }
Chris@16: 
Chris@16:   // Wait until data can be received without blocking.
Chris@16:   size_t receive_from(implementation_type& impl, const null_buffers&,
Chris@16:       endpoint_type& sender_endpoint, socket_base::message_flags,
Chris@16:       boost::system::error_code& ec)
Chris@16:   {
Chris@16:     // Wait for socket to become ready.
Chris@16:     socket_ops::poll_read(impl.socket_, impl.state_, ec);
Chris@16: 
Chris@16:     // Reset endpoint since it can be given no sensible value at this time.
Chris@16:     sender_endpoint = endpoint_type();
Chris@16: 
Chris@16:     return 0;
Chris@16:   }
Chris@16: 
Chris@16:   // Start an asynchronous receive. The buffer for the data being received and
Chris@16:   // the sender_endpoint object must both be valid for the lifetime of the
Chris@16:   // asynchronous operation.
Chris@16:   template <typename MutableBufferSequence, typename Handler>
Chris@16:   void async_receive_from(implementation_type& impl,
Chris@16:       const MutableBufferSequence& buffers, endpoint_type& sender_endpoint,
Chris@16:       socket_base::message_flags flags, 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 reactive_socket_recvfrom_op<MutableBufferSequence,
Chris@16:         endpoint_type, 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:     int protocol = impl.protocol_.type();
Chris@16:     p.p = new (p.v) op(impl.socket_, protocol,
Chris@16:         buffers, sender_endpoint, flags, handler);
Chris@16: 
Chris@16:     BOOST_ASIO_HANDLER_CREATION((p.p, "socket",
Chris@16:           &impl, "async_receive_from"));
Chris@16: 
Chris@16:     start_op(impl,
Chris@16:         (flags & socket_base::message_out_of_band)
Chris@16:           ? reactor::except_op : reactor::read_op,
Chris@16:         p.p, is_continuation, true, false);
Chris@16:     p.v = p.p = 0;
Chris@16:   }
Chris@16: 
Chris@16:   // Wait until data can be received without blocking.
Chris@16:   template <typename Handler>
Chris@16:   void async_receive_from(implementation_type& impl,
Chris@16:       const null_buffers&, endpoint_type& sender_endpoint,
Chris@16:       socket_base::message_flags flags, 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 reactive_null_buffers_op<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(handler);
Chris@16: 
Chris@16:     BOOST_ASIO_HANDLER_CREATION((p.p, "socket",
Chris@16:           &impl, "async_receive_from(null_buffers)"));
Chris@16: 
Chris@16:     // Reset endpoint since it can be given no sensible value at this time.
Chris@16:     sender_endpoint = endpoint_type();
Chris@16: 
Chris@16:     start_op(impl,
Chris@16:         (flags & socket_base::message_out_of_band)
Chris@16:           ? reactor::except_op : reactor::read_op,
Chris@16:         p.p, is_continuation, false, false);
Chris@16:     p.v = p.p = 0;
Chris@16:   }
Chris@16: 
Chris@16:   // Accept a new connection.
Chris@16:   template <typename Socket>
Chris@16:   boost::system::error_code accept(implementation_type& impl,
Chris@16:       Socket& peer, endpoint_type* peer_endpoint, boost::system::error_code& ec)
Chris@16:   {
Chris@16:     // We cannot accept a socket that is already open.
Chris@16:     if (peer.is_open())
Chris@16:     {
Chris@16:       ec = boost::asio::error::already_open;
Chris@16:       return ec;
Chris@16:     }
Chris@16: 
Chris@16:     std::size_t addr_len = peer_endpoint ? peer_endpoint->capacity() : 0;
Chris@16:     socket_holder new_socket(socket_ops::sync_accept(impl.socket_,
Chris@16:           impl.state_, peer_endpoint ? peer_endpoint->data() : 0,
Chris@16:           peer_endpoint ? &addr_len : 0, ec));
Chris@16: 
Chris@16:     // On success, assign new connection to peer socket object.
Chris@16:     if (new_socket.get() != invalid_socket)
Chris@16:     {
Chris@16:       if (peer_endpoint)
Chris@16:         peer_endpoint->resize(addr_len);
Chris@16:       if (!peer.assign(impl.protocol_, new_socket.get(), ec))
Chris@16:         new_socket.release();
Chris@16:     }
Chris@16: 
Chris@16:     return ec;
Chris@16:   }
Chris@16: 
Chris@16:   // Start an asynchronous accept. The peer and peer_endpoint objects
Chris@16:   // must be valid until the accept's handler is invoked.
Chris@16:   template <typename Socket, typename Handler>
Chris@16:   void async_accept(implementation_type& impl, Socket& peer,
Chris@16:       endpoint_type* peer_endpoint, 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 reactive_socket_accept_op<Socket, 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.socket_, impl.state_, peer,
Chris@16:         impl.protocol_, peer_endpoint, handler);
Chris@16: 
Chris@16:     BOOST_ASIO_HANDLER_CREATION((p.p, "socket", &impl, "async_accept"));
Chris@16: 
Chris@16:     start_accept_op(impl, p.p, is_continuation, peer.is_open());
Chris@16:     p.v = p.p = 0;
Chris@16:   }
Chris@16: 
Chris@16:   // Connect the socket to the specified endpoint.
Chris@16:   boost::system::error_code connect(implementation_type& impl,
Chris@16:       const endpoint_type& peer_endpoint, boost::system::error_code& ec)
Chris@16:   {
Chris@16:     socket_ops::sync_connect(impl.socket_,
Chris@16:         peer_endpoint.data(), peer_endpoint.size(), ec);
Chris@16:     return ec;
Chris@16:   }
Chris@16: 
Chris@16:   // Start an asynchronous connect.
Chris@16:   template <typename Handler>
Chris@16:   void async_connect(implementation_type& impl,
Chris@16:       const endpoint_type& peer_endpoint, 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 reactive_socket_connect_op<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.socket_, handler);
Chris@16: 
Chris@16:     BOOST_ASIO_HANDLER_CREATION((p.p, "socket", &impl, "async_connect"));
Chris@16: 
Chris@16:     start_connect_op(impl, p.p, is_continuation,
Chris@16:         peer_endpoint.data(), peer_endpoint.size());
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_HAS_IOCP)
Chris@16: 
Chris@16: #endif // BOOST_ASIO_DETAIL_REACTIVE_SOCKET_SERVICE_HPP