| // |
| // detail/win_iocp_socket_accept_op.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_DETAIL_WIN_IOCP_SOCKET_ACCEPT_OP_HPP |
| #define BOOST_ASIO_DETAIL_WIN_IOCP_SOCKET_ACCEPT_OP_HPP |
| |
| #if defined(_MSC_VER) && (_MSC_VER >= 1200) |
| # pragma once |
| #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) |
| |
| #include <boost/asio/detail/config.hpp> |
| |
| #if defined(BOOST_ASIO_HAS_IOCP) |
| |
| #include <boost/utility/addressof.hpp> |
| #include <boost/asio/detail/bind_handler.hpp> |
| #include <boost/asio/detail/buffer_sequence_adapter.hpp> |
| #include <boost/asio/detail/fenced_block.hpp> |
| #include <boost/asio/detail/handler_alloc_helpers.hpp> |
| #include <boost/asio/detail/handler_invoke_helpers.hpp> |
| #include <boost/asio/detail/operation.hpp> |
| #include <boost/asio/detail/socket_ops.hpp> |
| #include <boost/asio/detail/win_iocp_socket_service_base.hpp> |
| #include <boost/asio/error.hpp> |
| |
| #include <boost/asio/detail/push_options.hpp> |
| |
| namespace boost { |
| namespace asio { |
| namespace detail { |
| |
| template <typename Socket, typename Protocol, typename Handler> |
| class win_iocp_socket_accept_op : public operation |
| { |
| public: |
| BOOST_ASIO_DEFINE_HANDLER_PTR(win_iocp_socket_accept_op); |
| |
| win_iocp_socket_accept_op(win_iocp_socket_service_base& socket_service, |
| socket_type socket, Socket& peer, const Protocol& protocol, |
| typename Protocol::endpoint* peer_endpoint, |
| bool enable_connection_aborted, Handler handler) |
| : operation(&win_iocp_socket_accept_op::do_complete), |
| socket_service_(socket_service), |
| socket_(socket), |
| peer_(peer), |
| protocol_(protocol), |
| peer_endpoint_(peer_endpoint), |
| enable_connection_aborted_(enable_connection_aborted), |
| handler_(handler) |
| { |
| } |
| |
| socket_holder& new_socket() |
| { |
| return new_socket_; |
| } |
| |
| void* output_buffer() |
| { |
| return output_buffer_; |
| } |
| |
| DWORD address_length() |
| { |
| return sizeof(sockaddr_storage_type) + 16; |
| } |
| |
| static void do_complete(io_service_impl* owner, operation* base, |
| boost::system::error_code ec, std::size_t /*bytes_transferred*/) |
| { |
| // Take ownership of the operation object. |
| win_iocp_socket_accept_op* o(static_cast<win_iocp_socket_accept_op*>(base)); |
| ptr p = { boost::addressof(o->handler_), o, o }; |
| |
| if (owner) |
| { |
| typename Protocol::endpoint peer_endpoint; |
| std::size_t addr_len = peer_endpoint.capacity(); |
| socket_ops::complete_iocp_accept(o->socket_, |
| o->output_buffer(), o->address_length(), |
| peer_endpoint.data(), &addr_len, |
| o->new_socket_.get(), ec); |
| |
| // Restart the accept operation if we got the connection_aborted error |
| // and the enable_connection_aborted socket option is not set. |
| if (ec == boost::asio::error::connection_aborted |
| && !o->enable_connection_aborted_) |
| { |
| o->reset(); |
| o->socket_service_.restart_accept_op(o->socket_, |
| o->new_socket_, o->protocol_.family(), |
| o->protocol_.type(), o->protocol_.protocol(), |
| o->output_buffer(), o->address_length(), o); |
| p.v = p.p = 0; |
| return; |
| } |
| |
| // If the socket was successfully accepted, transfer ownership of the |
| // socket to the peer object. |
| if (!ec) |
| { |
| o->peer_.assign(o->protocol_, |
| typename Socket::native_type( |
| o->new_socket_.get(), peer_endpoint), ec); |
| if (!ec) |
| o->new_socket_.release(); |
| } |
| |
| // Pass endpoint back to caller. |
| if (o->peer_endpoint_) |
| *o->peer_endpoint_ = peer_endpoint; |
| } |
| |
| // Make a copy of the handler so that the memory can be deallocated before |
| // the upcall is made. Even if we're not about to make an upcall, a |
| // sub-object of the handler may be the true owner of the memory associated |
| // with the handler. Consequently, a local copy of the handler is required |
| // to ensure that any owning sub-object remains valid until after we have |
| // deallocated the memory here. |
| detail::binder1<Handler, boost::system::error_code> |
| handler(o->handler_, ec); |
| p.h = boost::addressof(handler.handler_); |
| p.reset(); |
| |
| // Make the upcall if required. |
| if (owner) |
| { |
| boost::asio::detail::fenced_block b; |
| boost_asio_handler_invoke_helpers::invoke(handler, handler.handler_); |
| } |
| } |
| |
| private: |
| win_iocp_socket_service_base& socket_service_; |
| socket_type socket_; |
| socket_holder new_socket_; |
| Socket& peer_; |
| Protocol protocol_; |
| typename Protocol::endpoint* peer_endpoint_; |
| unsigned char output_buffer_[(sizeof(sockaddr_storage_type) + 16) * 2]; |
| bool enable_connection_aborted_; |
| Handler handler_; |
| }; |
| |
| } // namespace detail |
| } // namespace asio |
| } // namespace boost |
| |
| #include <boost/asio/detail/pop_options.hpp> |
| |
| #endif // defined(BOOST_ASIO_HAS_IOCP) |
| |
| #endif // BOOST_ASIO_DETAIL_WIN_IOCP_SOCKET_ACCEPT_OP_HPP |