| // |
| // detail/winrt_ssocket_service_base.hpp |
| // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| // |
| // Copyright (c) 2003-2016 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 ASIO_DETAIL_WINRT_SSOCKET_SERVICE_BASE_HPP |
| #define ASIO_DETAIL_WINRT_SSOCKET_SERVICE_BASE_HPP |
| |
| #if defined(_MSC_VER) && (_MSC_VER >= 1200) |
| # pragma once |
| #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) |
| |
| #include "asio/detail/config.hpp" |
| |
| #if defined(ASIO_WINDOWS_RUNTIME) |
| |
| #include "asio/buffer.hpp" |
| #include "asio/error.hpp" |
| #include "asio/io_context.hpp" |
| #include "asio/socket_base.hpp" |
| #include "asio/detail/buffer_sequence_adapter.hpp" |
| #include "asio/detail/memory.hpp" |
| #include "asio/detail/socket_types.hpp" |
| #include "asio/detail/winrt_async_manager.hpp" |
| #include "asio/detail/winrt_socket_recv_op.hpp" |
| #include "asio/detail/winrt_socket_send_op.hpp" |
| |
| #include "asio/detail/push_options.hpp" |
| |
| namespace asio { |
| namespace detail { |
| |
| class winrt_ssocket_service_base |
| { |
| public: |
| // The native type of a socket. |
| typedef Windows::Networking::Sockets::StreamSocket^ native_handle_type; |
| |
| // The implementation type of the socket. |
| struct base_implementation_type |
| { |
| // Default constructor. |
| base_implementation_type() |
| : socket_(nullptr), |
| next_(0), |
| prev_(0) |
| { |
| } |
| |
| // The underlying native socket. |
| native_handle_type socket_; |
| |
| // Pointers to adjacent socket implementations in linked list. |
| base_implementation_type* next_; |
| base_implementation_type* prev_; |
| }; |
| |
| // Constructor. |
| ASIO_DECL winrt_ssocket_service_base( |
| asio::io_context& io_context); |
| |
| // Destroy all user-defined handler objects owned by the service. |
| ASIO_DECL void base_shutdown(); |
| |
| // Construct a new socket implementation. |
| ASIO_DECL void construct(base_implementation_type&); |
| |
| // Move-construct a new socket implementation. |
| ASIO_DECL void base_move_construct(base_implementation_type& impl, |
| base_implementation_type& other_impl); |
| |
| // Move-assign from another socket implementation. |
| ASIO_DECL void base_move_assign(base_implementation_type& impl, |
| winrt_ssocket_service_base& other_service, |
| base_implementation_type& other_impl); |
| |
| // Destroy a socket implementation. |
| ASIO_DECL void destroy(base_implementation_type& impl); |
| |
| // Determine whether the socket is open. |
| bool is_open(const base_implementation_type& impl) const |
| { |
| return impl.socket_ != nullptr; |
| } |
| |
| // Destroy a socket implementation. |
| ASIO_DECL asio::error_code close( |
| base_implementation_type& impl, asio::error_code& ec); |
| |
| // Get the native socket representation. |
| native_handle_type native_handle(base_implementation_type& impl) |
| { |
| return impl.socket_; |
| } |
| |
| // Cancel all operations associated with the socket. |
| asio::error_code cancel(base_implementation_type&, |
| asio::error_code& ec) |
| { |
| ec = asio::error::operation_not_supported; |
| return ec; |
| } |
| |
| // Determine whether the socket is at the out-of-band data mark. |
| bool at_mark(const base_implementation_type&, |
| asio::error_code& ec) const |
| { |
| ec = asio::error::operation_not_supported; |
| return false; |
| } |
| |
| // Determine the number of bytes available for reading. |
| std::size_t available(const base_implementation_type&, |
| asio::error_code& ec) const |
| { |
| ec = asio::error::operation_not_supported; |
| return 0; |
| } |
| |
| // Perform an IO control command on the socket. |
| template <typename IO_Control_Command> |
| asio::error_code io_control(base_implementation_type&, |
| IO_Control_Command&, asio::error_code& ec) |
| { |
| ec = asio::error::operation_not_supported; |
| return ec; |
| } |
| |
| // Gets the non-blocking mode of the socket. |
| bool non_blocking(const base_implementation_type&) const |
| { |
| return false; |
| } |
| |
| // Sets the non-blocking mode of the socket. |
| asio::error_code non_blocking(base_implementation_type&, |
| bool, asio::error_code& ec) |
| { |
| ec = asio::error::operation_not_supported; |
| return ec; |
| } |
| |
| // Gets the non-blocking mode of the native socket implementation. |
| bool native_non_blocking(const base_implementation_type&) const |
| { |
| return false; |
| } |
| |
| // Sets the non-blocking mode of the native socket implementation. |
| asio::error_code native_non_blocking(base_implementation_type&, |
| bool, asio::error_code& ec) |
| { |
| ec = asio::error::operation_not_supported; |
| return ec; |
| } |
| |
| // Disable sends or receives on the socket. |
| asio::error_code shutdown(base_implementation_type&, |
| socket_base::shutdown_type, asio::error_code& ec) |
| { |
| ec = asio::error::operation_not_supported; |
| return ec; |
| } |
| |
| // Send the given data to the peer. |
| template <typename ConstBufferSequence> |
| std::size_t send(base_implementation_type& impl, |
| const ConstBufferSequence& buffers, |
| socket_base::message_flags flags, asio::error_code& ec) |
| { |
| return do_send(impl, |
| buffer_sequence_adapter<asio::const_buffer, |
| ConstBufferSequence>::first(buffers), flags, ec); |
| } |
| |
| // Wait until data can be sent without blocking. |
| std::size_t send(base_implementation_type&, const null_buffers&, |
| socket_base::message_flags, asio::error_code& ec) |
| { |
| ec = asio::error::operation_not_supported; |
| return 0; |
| } |
| |
| // Start an asynchronous send. The data being sent must be valid for the |
| // lifetime of the asynchronous operation. |
| template <typename ConstBufferSequence, typename Handler> |
| void async_send(base_implementation_type& impl, |
| const ConstBufferSequence& buffers, |
| socket_base::message_flags flags, Handler& handler) |
| { |
| bool is_continuation = |
| asio_handler_cont_helpers::is_continuation(handler); |
| |
| // Allocate and construct an operation to wrap the handler. |
| typedef winrt_socket_send_op<ConstBufferSequence, Handler> op; |
| typename op::ptr p = { asio::detail::addressof(handler), |
| op::ptr::allocate(handler), 0 }; |
| p.p = new (p.v) op(buffers, handler); |
| |
| ASIO_HANDLER_CREATION((io_context_.context(), |
| *p.p, "socket", &impl, 0, "async_send")); |
| |
| start_send_op(impl, |
| buffer_sequence_adapter<asio::const_buffer, |
| ConstBufferSequence>::first(buffers), |
| flags, p.p, is_continuation); |
| p.v = p.p = 0; |
| } |
| |
| // Start an asynchronous wait until data can be sent without blocking. |
| template <typename Handler> |
| void async_send(base_implementation_type&, const null_buffers&, |
| socket_base::message_flags, Handler& handler) |
| { |
| asio::error_code ec = asio::error::operation_not_supported; |
| const std::size_t bytes_transferred = 0; |
| io_context_.get_io_context().post( |
| detail::bind_handler(handler, ec, bytes_transferred)); |
| } |
| |
| // Receive some data from the peer. Returns the number of bytes received. |
| template <typename MutableBufferSequence> |
| std::size_t receive(base_implementation_type& impl, |
| const MutableBufferSequence& buffers, |
| socket_base::message_flags flags, asio::error_code& ec) |
| { |
| return do_receive(impl, |
| buffer_sequence_adapter<asio::mutable_buffer, |
| MutableBufferSequence>::first(buffers), flags, ec); |
| } |
| |
| // Wait until data can be received without blocking. |
| std::size_t receive(base_implementation_type&, const null_buffers&, |
| socket_base::message_flags, asio::error_code& ec) |
| { |
| ec = asio::error::operation_not_supported; |
| return 0; |
| } |
| |
| // Start an asynchronous receive. The buffer for the data being received |
| // must be valid for the lifetime of the asynchronous operation. |
| template <typename MutableBufferSequence, typename Handler> |
| void async_receive(base_implementation_type& impl, |
| const MutableBufferSequence& buffers, |
| socket_base::message_flags flags, Handler& handler) |
| { |
| bool is_continuation = |
| asio_handler_cont_helpers::is_continuation(handler); |
| |
| // Allocate and construct an operation to wrap the handler. |
| typedef winrt_socket_recv_op<MutableBufferSequence, Handler> op; |
| typename op::ptr p = { asio::detail::addressof(handler), |
| op::ptr::allocate(handler), 0 }; |
| p.p = new (p.v) op(buffers, handler); |
| |
| ASIO_HANDLER_CREATION((io_context_.context(), |
| *p.p, "socket", &impl, 0, "async_receive")); |
| |
| start_receive_op(impl, |
| buffer_sequence_adapter<asio::mutable_buffer, |
| MutableBufferSequence>::first(buffers), |
| flags, p.p, is_continuation); |
| p.v = p.p = 0; |
| } |
| |
| // Wait until data can be received without blocking. |
| template <typename Handler> |
| void async_receive(base_implementation_type&, const null_buffers&, |
| socket_base::message_flags, Handler& handler) |
| { |
| asio::error_code ec = asio::error::operation_not_supported; |
| const std::size_t bytes_transferred = 0; |
| io_context_.get_io_context().post( |
| detail::bind_handler(handler, ec, bytes_transferred)); |
| } |
| |
| protected: |
| // Helper function to obtain endpoints associated with the connection. |
| ASIO_DECL std::size_t do_get_endpoint( |
| const base_implementation_type& impl, bool local, |
| void* addr, std::size_t addr_len, asio::error_code& ec) const; |
| |
| // Helper function to set a socket option. |
| ASIO_DECL asio::error_code do_set_option( |
| base_implementation_type& impl, |
| int level, int optname, const void* optval, |
| std::size_t optlen, asio::error_code& ec); |
| |
| // Helper function to get a socket option. |
| ASIO_DECL void do_get_option( |
| const base_implementation_type& impl, |
| int level, int optname, void* optval, |
| std::size_t* optlen, asio::error_code& ec) const; |
| |
| // Helper function to perform a synchronous connect. |
| ASIO_DECL asio::error_code do_connect( |
| base_implementation_type& impl, |
| const void* addr, asio::error_code& ec); |
| |
| // Helper function to start an asynchronous connect. |
| ASIO_DECL void start_connect_op( |
| base_implementation_type& impl, const void* addr, |
| winrt_async_op<void>* op, bool is_continuation); |
| |
| // Helper function to perform a synchronous send. |
| ASIO_DECL std::size_t do_send( |
| base_implementation_type& impl, const asio::const_buffer& data, |
| socket_base::message_flags flags, asio::error_code& ec); |
| |
| // Helper function to start an asynchronous send. |
| ASIO_DECL void start_send_op(base_implementation_type& impl, |
| const asio::const_buffer& data, socket_base::message_flags flags, |
| winrt_async_op<unsigned int>* op, bool is_continuation); |
| |
| // Helper function to perform a synchronous receive. |
| ASIO_DECL std::size_t do_receive( |
| base_implementation_type& impl, const asio::mutable_buffer& data, |
| socket_base::message_flags flags, asio::error_code& ec); |
| |
| // Helper function to start an asynchronous receive. |
| ASIO_DECL void start_receive_op(base_implementation_type& impl, |
| const asio::mutable_buffer& data, socket_base::message_flags flags, |
| winrt_async_op<Windows::Storage::Streams::IBuffer^>* op, |
| bool is_continuation); |
| |
| // The io_context implementation used for delivering completions. |
| io_context_impl& io_context_; |
| |
| // The manager that keeps track of outstanding operations. |
| winrt_async_manager& async_manager_; |
| |
| // Mutex to protect access to the linked list of implementations. |
| asio::detail::mutex mutex_; |
| |
| // The head of a linked list of all implementations. |
| base_implementation_type* impl_list_; |
| }; |
| |
| } // namespace detail |
| } // namespace asio |
| |
| #include "asio/detail/pop_options.hpp" |
| |
| #if defined(ASIO_HEADER_ONLY) |
| # include "asio/detail/impl/winrt_ssocket_service_base.ipp" |
| #endif // defined(ASIO_HEADER_ONLY) |
| |
| #endif // defined(ASIO_WINDOWS_RUNTIME) |
| |
| #endif // ASIO_DETAIL_WINRT_SSOCKET_SERVICE_BASE_HPP |