363 lines
12 KiB
C++
363 lines
12 KiB
C++
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//
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// detail/winrt_ssocket_service_base.hpp
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// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2023 Christopher M. Kohlhoff (chris at kohlhoff dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifndef ASIO_DETAIL_WINRT_SSOCKET_SERVICE_BASE_HPP
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#define ASIO_DETAIL_WINRT_SSOCKET_SERVICE_BASE_HPP
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#if defined(_MSC_VER) && (_MSC_VER >= 1200)
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# pragma once
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#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
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#include "asio/detail/config.hpp"
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#if defined(ASIO_WINDOWS_RUNTIME)
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#include "asio/buffer.hpp"
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#include "asio/error.hpp"
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#include "asio/execution_context.hpp"
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#include "asio/socket_base.hpp"
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#include "asio/detail/buffer_sequence_adapter.hpp"
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#include "asio/detail/memory.hpp"
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#include "asio/detail/socket_types.hpp"
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#include "asio/detail/winrt_async_manager.hpp"
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#include "asio/detail/winrt_socket_recv_op.hpp"
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#include "asio/detail/winrt_socket_send_op.hpp"
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#if defined(ASIO_HAS_IOCP)
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# include "asio/detail/win_iocp_io_context.hpp"
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#else // defined(ASIO_HAS_IOCP)
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# include "asio/detail/scheduler.hpp"
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#endif // defined(ASIO_HAS_IOCP)
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#include "asio/detail/push_options.hpp"
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namespace asio {
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namespace detail {
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class winrt_ssocket_service_base
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{
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public:
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// The native type of a socket.
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typedef Windows::Networking::Sockets::StreamSocket^ native_handle_type;
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// The implementation type of the socket.
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struct base_implementation_type
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{
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// Default constructor.
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base_implementation_type()
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: socket_(nullptr),
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next_(0),
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prev_(0)
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{
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}
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// The underlying native socket.
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native_handle_type socket_;
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// Pointers to adjacent socket implementations in linked list.
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base_implementation_type* next_;
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base_implementation_type* prev_;
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};
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// Constructor.
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ASIO_DECL winrt_ssocket_service_base(execution_context& context);
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// Destroy all user-defined handler objects owned by the service.
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ASIO_DECL void base_shutdown();
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// Construct a new socket implementation.
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ASIO_DECL void construct(base_implementation_type&);
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// Move-construct a new socket implementation.
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ASIO_DECL void base_move_construct(base_implementation_type& impl,
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base_implementation_type& other_impl) ASIO_NOEXCEPT;
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// Move-assign from another socket implementation.
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ASIO_DECL void base_move_assign(base_implementation_type& impl,
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winrt_ssocket_service_base& other_service,
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base_implementation_type& other_impl);
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// Destroy a socket implementation.
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ASIO_DECL void destroy(base_implementation_type& impl);
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// Determine whether the socket is open.
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bool is_open(const base_implementation_type& impl) const
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{
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return impl.socket_ != nullptr;
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}
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// Destroy a socket implementation.
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ASIO_DECL asio::error_code close(
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base_implementation_type& impl, asio::error_code& ec);
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// Release ownership of the socket.
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ASIO_DECL native_handle_type release(
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base_implementation_type& impl, asio::error_code& ec);
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// Get the native socket representation.
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native_handle_type native_handle(base_implementation_type& impl)
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{
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return impl.socket_;
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}
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// Cancel all operations associated with the socket.
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asio::error_code cancel(base_implementation_type&,
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asio::error_code& ec)
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{
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ec = asio::error::operation_not_supported;
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return ec;
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}
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// Determine whether the socket is at the out-of-band data mark.
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bool at_mark(const base_implementation_type&,
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asio::error_code& ec) const
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{
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ec = asio::error::operation_not_supported;
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return false;
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}
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// Determine the number of bytes available for reading.
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std::size_t available(const base_implementation_type&,
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asio::error_code& ec) const
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{
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ec = asio::error::operation_not_supported;
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return 0;
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}
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// Perform an IO control command on the socket.
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template <typename IO_Control_Command>
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asio::error_code io_control(base_implementation_type&,
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IO_Control_Command&, asio::error_code& ec)
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{
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ec = asio::error::operation_not_supported;
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return ec;
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}
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// Gets the non-blocking mode of the socket.
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bool non_blocking(const base_implementation_type&) const
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{
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return false;
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}
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// Sets the non-blocking mode of the socket.
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asio::error_code non_blocking(base_implementation_type&,
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bool, asio::error_code& ec)
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{
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ec = asio::error::operation_not_supported;
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return ec;
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}
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// Gets the non-blocking mode of the native socket implementation.
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bool native_non_blocking(const base_implementation_type&) const
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{
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return false;
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}
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// Sets the non-blocking mode of the native socket implementation.
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asio::error_code native_non_blocking(base_implementation_type&,
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bool, asio::error_code& ec)
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{
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ec = asio::error::operation_not_supported;
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return ec;
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}
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// Send the given data to the peer.
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template <typename ConstBufferSequence>
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std::size_t send(base_implementation_type& impl,
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const ConstBufferSequence& buffers,
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socket_base::message_flags flags, asio::error_code& ec)
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{
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return do_send(impl,
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buffer_sequence_adapter<asio::const_buffer,
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ConstBufferSequence>::first(buffers), flags, ec);
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}
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// Wait until data can be sent without blocking.
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std::size_t send(base_implementation_type&, const null_buffers&,
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socket_base::message_flags, asio::error_code& ec)
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{
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ec = asio::error::operation_not_supported;
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return 0;
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}
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// Start an asynchronous send. The data being sent must be valid for the
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// lifetime of the asynchronous operation.
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template <typename ConstBufferSequence, typename Handler, typename IoExecutor>
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void async_send(base_implementation_type& impl,
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const ConstBufferSequence& buffers, socket_base::message_flags flags,
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Handler& handler, const IoExecutor& io_ex)
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{
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bool is_continuation =
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asio_handler_cont_helpers::is_continuation(handler);
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// Allocate and construct an operation to wrap the handler.
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typedef winrt_socket_send_op<ConstBufferSequence, Handler, IoExecutor> op;
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typename op::ptr p = { asio::detail::addressof(handler),
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op::ptr::allocate(handler), 0 };
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p.p = new (p.v) op(buffers, handler, io_ex);
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ASIO_HANDLER_CREATION((scheduler_.context(),
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*p.p, "socket", &impl, 0, "async_send"));
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start_send_op(impl,
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buffer_sequence_adapter<asio::const_buffer,
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ConstBufferSequence>::first(buffers),
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flags, p.p, is_continuation);
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p.v = p.p = 0;
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}
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// Start an asynchronous wait until data can be sent without blocking.
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template <typename Handler, typename IoExecutor>
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void async_send(base_implementation_type&, const null_buffers&,
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socket_base::message_flags, Handler& handler, const IoExecutor& io_ex)
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{
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asio::error_code ec = asio::error::operation_not_supported;
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const std::size_t bytes_transferred = 0;
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asio::post(io_ex,
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detail::bind_handler(handler, ec, bytes_transferred));
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}
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// Receive some data from the peer. Returns the number of bytes received.
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template <typename MutableBufferSequence>
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std::size_t receive(base_implementation_type& impl,
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const MutableBufferSequence& buffers,
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socket_base::message_flags flags, asio::error_code& ec)
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{
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return do_receive(impl,
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buffer_sequence_adapter<asio::mutable_buffer,
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MutableBufferSequence>::first(buffers), flags, ec);
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}
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// Wait until data can be received without blocking.
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std::size_t receive(base_implementation_type&, const null_buffers&,
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socket_base::message_flags, asio::error_code& ec)
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{
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ec = asio::error::operation_not_supported;
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return 0;
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}
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// Start an asynchronous receive. The buffer for the data being received
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// must be valid for the lifetime of the asynchronous operation.
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template <typename MutableBufferSequence,
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typename Handler, typename IoExecutor>
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void async_receive(base_implementation_type& impl,
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const MutableBufferSequence& buffers, socket_base::message_flags flags,
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Handler& handler, const IoExecutor& io_ex)
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{
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bool is_continuation =
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asio_handler_cont_helpers::is_continuation(handler);
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// Allocate and construct an operation to wrap the handler.
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typedef winrt_socket_recv_op<MutableBufferSequence, Handler, IoExecutor> op;
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typename op::ptr p = { asio::detail::addressof(handler),
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op::ptr::allocate(handler), 0 };
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p.p = new (p.v) op(buffers, handler, io_ex);
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ASIO_HANDLER_CREATION((scheduler_.context(),
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*p.p, "socket", &impl, 0, "async_receive"));
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start_receive_op(impl,
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buffer_sequence_adapter<asio::mutable_buffer,
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MutableBufferSequence>::first(buffers),
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flags, p.p, is_continuation);
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p.v = p.p = 0;
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}
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// Wait until data can be received without blocking.
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template <typename Handler, typename IoExecutor>
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void async_receive(base_implementation_type&, const null_buffers&,
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socket_base::message_flags, Handler& handler, const IoExecutor& io_ex)
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{
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asio::error_code ec = asio::error::operation_not_supported;
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const std::size_t bytes_transferred = 0;
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asio::post(io_ex,
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detail::bind_handler(handler, ec, bytes_transferred));
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}
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protected:
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// Helper function to obtain endpoints associated with the connection.
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ASIO_DECL std::size_t do_get_endpoint(
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const base_implementation_type& impl, bool local,
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void* addr, std::size_t addr_len, asio::error_code& ec) const;
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// Helper function to set a socket option.
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ASIO_DECL asio::error_code do_set_option(
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base_implementation_type& impl,
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int level, int optname, const void* optval,
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std::size_t optlen, asio::error_code& ec);
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// Helper function to get a socket option.
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ASIO_DECL void do_get_option(
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const base_implementation_type& impl,
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int level, int optname, void* optval,
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std::size_t* optlen, asio::error_code& ec) const;
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// Helper function to perform a synchronous connect.
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ASIO_DECL asio::error_code do_connect(
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base_implementation_type& impl,
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const void* addr, asio::error_code& ec);
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// Helper function to start an asynchronous connect.
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ASIO_DECL void start_connect_op(
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base_implementation_type& impl, const void* addr,
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winrt_async_op<void>* op, bool is_continuation);
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// Helper function to perform a synchronous send.
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ASIO_DECL std::size_t do_send(
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base_implementation_type& impl, const asio::const_buffer& data,
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socket_base::message_flags flags, asio::error_code& ec);
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// Helper function to start an asynchronous send.
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ASIO_DECL void start_send_op(base_implementation_type& impl,
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const asio::const_buffer& data, socket_base::message_flags flags,
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winrt_async_op<unsigned int>* op, bool is_continuation);
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// Helper function to perform a synchronous receive.
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ASIO_DECL std::size_t do_receive(
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base_implementation_type& impl, const asio::mutable_buffer& data,
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socket_base::message_flags flags, asio::error_code& ec);
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// Helper function to start an asynchronous receive.
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ASIO_DECL void start_receive_op(base_implementation_type& impl,
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const asio::mutable_buffer& data, socket_base::message_flags flags,
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winrt_async_op<Windows::Storage::Streams::IBuffer^>* op,
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bool is_continuation);
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// The scheduler implementation used for delivering completions.
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#if defined(ASIO_HAS_IOCP)
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typedef class win_iocp_io_context scheduler_impl;
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#else
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typedef class scheduler scheduler_impl;
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#endif
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scheduler_impl& scheduler_;
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// The manager that keeps track of outstanding operations.
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winrt_async_manager& async_manager_;
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// Mutex to protect access to the linked list of implementations.
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asio::detail::mutex mutex_;
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// The head of a linked list of all implementations.
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base_implementation_type* impl_list_;
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};
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} // namespace detail
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} // namespace asio
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#include "asio/detail/pop_options.hpp"
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#if defined(ASIO_HEADER_ONLY)
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# include "asio/detail/impl/winrt_ssocket_service_base.ipp"
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#endif // defined(ASIO_HEADER_ONLY)
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#endif // defined(ASIO_WINDOWS_RUNTIME)
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#endif // ASIO_DETAIL_WINRT_SSOCKET_SERVICE_BASE_HPP
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