summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat (limited to '3rdParty/Boost/boost/asio/detail/win_iocp_socket_service.hpp')
m---------3rdParty/Boost0
-rw-r--r--3rdParty/Boost/boost/asio/detail/win_iocp_socket_service.hpp2417
2 files changed, 0 insertions, 2417 deletions
diff --git a/3rdParty/Boost b/3rdParty/Boost
new file mode 160000
+Subproject 3bbdbc8cf1996f23d9a366da8bac0f97be6ad79
diff --git a/3rdParty/Boost/boost/asio/detail/win_iocp_socket_service.hpp b/3rdParty/Boost/boost/asio/detail/win_iocp_socket_service.hpp
deleted file mode 100644
index 5192612..0000000
--- a/3rdParty/Boost/boost/asio/detail/win_iocp_socket_service.hpp
+++ /dev/null
@@ -1,2417 +0,0 @@
-//
-// win_iocp_socket_service.hpp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2008 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_SERVICE_HPP
-#define BOOST_ASIO_DETAIL_WIN_IOCP_SOCKET_SERVICE_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include <boost/asio/detail/push_options.hpp>
-
-#include <boost/asio/detail/win_iocp_io_service_fwd.hpp>
-
-#if defined(BOOST_ASIO_HAS_IOCP)
-
-#include <boost/asio/detail/push_options.hpp>
-#include <cstring>
-#include <boost/shared_ptr.hpp>
-#include <boost/type_traits/is_same.hpp>
-#include <boost/weak_ptr.hpp>
-#include <boost/asio/detail/pop_options.hpp>
-
-#include <boost/asio/buffer.hpp>
-#include <boost/asio/error.hpp>
-#include <boost/asio/io_service.hpp>
-#include <boost/asio/socket_base.hpp>
-#include <boost/asio/detail/bind_handler.hpp>
-#include <boost/asio/detail/handler_alloc_helpers.hpp>
-#include <boost/asio/detail/handler_invoke_helpers.hpp>
-#include <boost/asio/detail/mutex.hpp>
-#include <boost/asio/detail/select_reactor.hpp>
-#include <boost/asio/detail/socket_holder.hpp>
-#include <boost/asio/detail/socket_ops.hpp>
-#include <boost/asio/detail/socket_types.hpp>
-#include <boost/asio/detail/win_iocp_io_service.hpp>
-
-namespace boost {
-namespace asio {
-namespace detail {
-
-template <typename Protocol>
-class win_iocp_socket_service
- : public boost::asio::detail::service_base<win_iocp_socket_service<Protocol> >
-{
-public:
- // The protocol type.
- typedef Protocol protocol_type;
-
- // The endpoint type.
- typedef typename Protocol::endpoint endpoint_type;
-
- // Base class for all operations.
- typedef win_iocp_io_service::operation operation;
-
- struct noop_deleter { void operator()(void*) {} };
- typedef boost::shared_ptr<void> shared_cancel_token_type;
- typedef boost::weak_ptr<void> weak_cancel_token_type;
-
- // The native type of a socket.
- class native_type
- {
- public:
- native_type(socket_type s)
- : socket_(s),
- have_remote_endpoint_(false)
- {
- }
-
- native_type(socket_type s, const endpoint_type& ep)
- : socket_(s),
- have_remote_endpoint_(true),
- remote_endpoint_(ep)
- {
- }
-
- void operator=(socket_type s)
- {
- socket_ = s;
- have_remote_endpoint_ = false;
- remote_endpoint_ = endpoint_type();
- }
-
- operator socket_type() const
- {
- return socket_;
- }
-
- HANDLE as_handle() const
- {
- return reinterpret_cast<HANDLE>(socket_);
- }
-
- bool have_remote_endpoint() const
- {
- return have_remote_endpoint_;
- }
-
- endpoint_type remote_endpoint() const
- {
- return remote_endpoint_;
- }
-
- private:
- socket_type socket_;
- bool have_remote_endpoint_;
- endpoint_type remote_endpoint_;
- };
-
- // The type of the reactor used for connect operations.
- typedef detail::select_reactor<true> reactor_type;
-
- // The implementation type of the socket.
- class implementation_type
- {
- public:
- // Default constructor.
- implementation_type()
- : socket_(invalid_socket),
- flags_(0),
- cancel_token_(),
- protocol_(endpoint_type().protocol()),
- next_(0),
- prev_(0)
- {
- }
-
- private:
- // Only this service will have access to the internal values.
- friend class win_iocp_socket_service;
-
- // The native socket representation.
- native_type socket_;
-
- enum
- {
- enable_connection_aborted = 1, // User wants connection_aborted errors.
- close_might_block = 2, // User set linger option for blocking close.
- user_set_non_blocking = 4 // The user wants a non-blocking socket.
- };
-
- // Flags indicating the current state of the socket.
- unsigned char flags_;
-
- // We use a shared pointer as a cancellation token here to work around the
- // broken Windows support for cancellation. MSDN says that when you call
- // closesocket any outstanding WSARecv or WSASend operations will complete
- // with the error ERROR_OPERATION_ABORTED. In practice they complete with
- // ERROR_NETNAME_DELETED, which means you can't tell the difference between
- // a local cancellation and the socket being hard-closed by the peer.
- shared_cancel_token_type cancel_token_;
-
- // The protocol associated with the socket.
- protocol_type protocol_;
-
- // Per-descriptor data used by the reactor.
- reactor_type::per_descriptor_data reactor_data_;
-
-#if defined(BOOST_ASIO_ENABLE_CANCELIO)
- // The ID of the thread from which it is safe to cancel asynchronous
- // operations. 0 means no asynchronous operations have been started yet.
- // ~0 means asynchronous operations have been started from more than one
- // thread, and cancellation is not supported for the socket.
- DWORD safe_cancellation_thread_id_;
-#endif // defined(BOOST_ASIO_ENABLE_CANCELIO)
-
- // Pointers to adjacent socket implementations in linked list.
- implementation_type* next_;
- implementation_type* prev_;
- };
-
- // The maximum number of buffers to support in a single operation.
- enum { max_buffers = 64 < max_iov_len ? 64 : max_iov_len };
-
- // Constructor.
- win_iocp_socket_service(boost::asio::io_service& io_service)
- : boost::asio::detail::service_base<
- win_iocp_socket_service<Protocol> >(io_service),
- iocp_service_(boost::asio::use_service<win_iocp_io_service>(io_service)),
- reactor_(0),
- mutex_(),
- impl_list_(0)
- {
- }
-
- // Destroy all user-defined handler objects owned by the service.
- void shutdown_service()
- {
- // Close all implementations, causing all operations to complete.
- boost::asio::detail::mutex::scoped_lock lock(mutex_);
- implementation_type* impl = impl_list_;
- while (impl)
- {
- boost::system::error_code ignored_ec;
- close_for_destruction(*impl);
- impl = impl->next_;
- }
- }
-
- // Construct a new socket implementation.
- void construct(implementation_type& impl)
- {
- impl.socket_ = invalid_socket;
- impl.flags_ = 0;
- impl.cancel_token_.reset();
-#if defined(BOOST_ASIO_ENABLE_CANCELIO)
- impl.safe_cancellation_thread_id_ = 0;
-#endif // defined(BOOST_ASIO_ENABLE_CANCELIO)
-
- // Insert implementation into linked list of all implementations.
- boost::asio::detail::mutex::scoped_lock lock(mutex_);
- impl.next_ = impl_list_;
- impl.prev_ = 0;
- if (impl_list_)
- impl_list_->prev_ = &impl;
- impl_list_ = &impl;
- }
-
- // Destroy a socket implementation.
- void destroy(implementation_type& impl)
- {
- close_for_destruction(impl);
-
- // Remove implementation from linked list of all implementations.
- boost::asio::detail::mutex::scoped_lock lock(mutex_);
- if (impl_list_ == &impl)
- impl_list_ = impl.next_;
- if (impl.prev_)
- impl.prev_->next_ = impl.next_;
- if (impl.next_)
- impl.next_->prev_= impl.prev_;
- impl.next_ = 0;
- impl.prev_ = 0;
- }
-
- // Open a new socket implementation.
- boost::system::error_code open(implementation_type& impl,
- const protocol_type& protocol, boost::system::error_code& ec)
- {
- if (is_open(impl))
- {
- ec = boost::asio::error::already_open;
- return ec;
- }
-
- socket_holder sock(socket_ops::socket(protocol.family(), protocol.type(),
- protocol.protocol(), ec));
- if (sock.get() == invalid_socket)
- return ec;
-
- HANDLE sock_as_handle = reinterpret_cast<HANDLE>(sock.get());
- if (iocp_service_.register_handle(sock_as_handle, ec))
- return ec;
-
- impl.socket_ = sock.release();
- impl.flags_ = 0;
- impl.cancel_token_.reset(static_cast<void*>(0), noop_deleter());
- impl.protocol_ = protocol;
- ec = boost::system::error_code();
- return ec;
- }
-
- // Assign a native socket to a socket implementation.
- boost::system::error_code assign(implementation_type& impl,
- const protocol_type& protocol, const native_type& native_socket,
- boost::system::error_code& ec)
- {
- if (is_open(impl))
- {
- ec = boost::asio::error::already_open;
- return ec;
- }
-
- if (iocp_service_.register_handle(native_socket.as_handle(), ec))
- return ec;
-
- impl.socket_ = native_socket;
- impl.flags_ = 0;
- impl.cancel_token_.reset(static_cast<void*>(0), noop_deleter());
- impl.protocol_ = protocol;
- ec = boost::system::error_code();
- return ec;
- }
-
- // Determine whether the socket is open.
- bool is_open(const implementation_type& impl) const
- {
- return impl.socket_ != invalid_socket;
- }
-
- // Destroy a socket implementation.
- boost::system::error_code close(implementation_type& impl,
- boost::system::error_code& ec)
- {
- if (is_open(impl))
- {
- // Check if the reactor was created, in which case we need to close the
- // socket on the reactor as well to cancel any operations that might be
- // running there.
- reactor_type* reactor = static_cast<reactor_type*>(
- interlocked_compare_exchange_pointer(
- reinterpret_cast<void**>(&reactor_), 0, 0));
- if (reactor)
- reactor->close_descriptor(impl.socket_, impl.reactor_data_);
-
- if (socket_ops::close(impl.socket_, ec) == socket_error_retval)
- return ec;
-
- impl.socket_ = invalid_socket;
- impl.flags_ = 0;
- impl.cancel_token_.reset();
-#if defined(BOOST_ASIO_ENABLE_CANCELIO)
- impl.safe_cancellation_thread_id_ = 0;
-#endif // defined(BOOST_ASIO_ENABLE_CANCELIO)
- }
-
- ec = boost::system::error_code();
- return ec;
- }
-
- // Get the native socket representation.
- native_type native(implementation_type& impl)
- {
- return impl.socket_;
- }
-
- // Cancel all operations associated with the socket.
- boost::system::error_code cancel(implementation_type& impl,
- boost::system::error_code& ec)
- {
- if (!is_open(impl))
- {
- ec = boost::asio::error::bad_descriptor;
- return ec;
- }
- else if (FARPROC cancel_io_ex_ptr = ::GetProcAddress(
- ::GetModuleHandleA("KERNEL32"), "CancelIoEx"))
- {
- // The version of Windows supports cancellation from any thread.
- typedef BOOL (WINAPI* cancel_io_ex_t)(HANDLE, LPOVERLAPPED);
- cancel_io_ex_t cancel_io_ex = (cancel_io_ex_t)cancel_io_ex_ptr;
- socket_type sock = impl.socket_;
- HANDLE sock_as_handle = reinterpret_cast<HANDLE>(sock);
- if (!cancel_io_ex(sock_as_handle, 0))
- {
- DWORD last_error = ::GetLastError();
- if (last_error == ERROR_NOT_FOUND)
- {
- // ERROR_NOT_FOUND means that there were no operations to be
- // cancelled. We swallow this error to match the behaviour on other
- // platforms.
- ec = boost::system::error_code();
- }
- else
- {
- ec = boost::system::error_code(last_error,
- boost::asio::error::get_system_category());
- }
- }
- else
- {
- ec = boost::system::error_code();
- }
- }
-#if defined(BOOST_ASIO_ENABLE_CANCELIO)
- else if (impl.safe_cancellation_thread_id_ == 0)
- {
- // No operations have been started, so there's nothing to cancel.
- ec = boost::system::error_code();
- }
- else if (impl.safe_cancellation_thread_id_ == ::GetCurrentThreadId())
- {
- // Asynchronous operations have been started from the current thread only,
- // so it is safe to try to cancel them using CancelIo.
- socket_type sock = impl.socket_;
- HANDLE sock_as_handle = reinterpret_cast<HANDLE>(sock);
- if (!::CancelIo(sock_as_handle))
- {
- DWORD last_error = ::GetLastError();
- ec = boost::system::error_code(last_error,
- boost::asio::error::get_system_category());
- }
- else
- {
- ec = boost::system::error_code();
- }
- }
- else
- {
- // Asynchronous operations have been started from more than one thread,
- // so cancellation is not safe.
- ec = boost::asio::error::operation_not_supported;
- }
-#else // defined(BOOST_ASIO_ENABLE_CANCELIO)
- else
- {
- // Cancellation is not supported as CancelIo may not be used.
- ec = boost::asio::error::operation_not_supported;
- }
-#endif // defined(BOOST_ASIO_ENABLE_CANCELIO)
-
- return ec;
- }
-
- // Determine whether the socket is at the out-of-band data mark.
- bool at_mark(const implementation_type& impl,
- boost::system::error_code& ec) const
- {
- if (!is_open(impl))
- {
- ec = boost::asio::error::bad_descriptor;
- return false;
- }
-
- boost::asio::detail::ioctl_arg_type value = 0;
- socket_ops::ioctl(impl.socket_, SIOCATMARK, &value, ec);
- return ec ? false : value != 0;
- }
-
- // Determine the number of bytes available for reading.
- std::size_t available(const implementation_type& impl,
- boost::system::error_code& ec) const
- {
- if (!is_open(impl))
- {
- ec = boost::asio::error::bad_descriptor;
- return 0;
- }
-
- boost::asio::detail::ioctl_arg_type value = 0;
- socket_ops::ioctl(impl.socket_, FIONREAD, &value, ec);
- return ec ? static_cast<std::size_t>(0) : static_cast<std::size_t>(value);
- }
-
- // Bind the socket to the specified local endpoint.
- boost::system::error_code bind(implementation_type& impl,
- const endpoint_type& endpoint, boost::system::error_code& ec)
- {
- if (!is_open(impl))
- {
- ec = boost::asio::error::bad_descriptor;
- return ec;
- }
-
- socket_ops::bind(impl.socket_, endpoint.data(), endpoint.size(), ec);
- return ec;
- }
-
- // Place the socket into the state where it will listen for new connections.
- boost::system::error_code listen(implementation_type& impl, int backlog,
- boost::system::error_code& ec)
- {
- if (!is_open(impl))
- {
- ec = boost::asio::error::bad_descriptor;
- return ec;
- }
-
- socket_ops::listen(impl.socket_, backlog, ec);
- return ec;
- }
-
- // Set a socket option.
- template <typename Option>
- boost::system::error_code set_option(implementation_type& impl,
- const Option& option, boost::system::error_code& ec)
- {
- if (!is_open(impl))
- {
- ec = boost::asio::error::bad_descriptor;
- return ec;
- }
-
- if (option.level(impl.protocol_) == custom_socket_option_level
- && option.name(impl.protocol_) == enable_connection_aborted_option)
- {
- if (option.size(impl.protocol_) != sizeof(int))
- {
- ec = boost::asio::error::invalid_argument;
- }
- else
- {
- if (*reinterpret_cast<const int*>(option.data(impl.protocol_)))
- impl.flags_ |= implementation_type::enable_connection_aborted;
- else
- impl.flags_ &= ~implementation_type::enable_connection_aborted;
- ec = boost::system::error_code();
- }
- return ec;
- }
- else
- {
- if (option.level(impl.protocol_) == SOL_SOCKET
- && option.name(impl.protocol_) == SO_LINGER)
- {
- const ::linger* linger_option =
- reinterpret_cast<const ::linger*>(option.data(impl.protocol_));
- if (linger_option->l_onoff != 0 && linger_option->l_linger != 0)
- impl.flags_ |= implementation_type::close_might_block;
- else
- impl.flags_ &= ~implementation_type::close_might_block;
- }
-
- socket_ops::setsockopt(impl.socket_,
- option.level(impl.protocol_), option.name(impl.protocol_),
- option.data(impl.protocol_), option.size(impl.protocol_), ec);
- return ec;
- }
- }
-
- // Set a socket option.
- template <typename Option>
- boost::system::error_code get_option(const implementation_type& impl,
- Option& option, boost::system::error_code& ec) const
- {
- if (!is_open(impl))
- {
- ec = boost::asio::error::bad_descriptor;
- return ec;
- }
-
- if (option.level(impl.protocol_) == custom_socket_option_level
- && option.name(impl.protocol_) == enable_connection_aborted_option)
- {
- if (option.size(impl.protocol_) != sizeof(int))
- {
- ec = boost::asio::error::invalid_argument;
- }
- else
- {
- int* target = reinterpret_cast<int*>(option.data(impl.protocol_));
- if (impl.flags_ & implementation_type::enable_connection_aborted)
- *target = 1;
- else
- *target = 0;
- option.resize(impl.protocol_, sizeof(int));
- ec = boost::system::error_code();
- }
- return ec;
- }
- else
- {
- size_t size = option.size(impl.protocol_);
- socket_ops::getsockopt(impl.socket_,
- option.level(impl.protocol_), option.name(impl.protocol_),
- option.data(impl.protocol_), &size, ec);
- if (!ec)
- option.resize(impl.protocol_, size);
- return ec;
- }
- }
-
- // Perform an IO control command on the socket.
- template <typename IO_Control_Command>
- boost::system::error_code io_control(implementation_type& impl,
- IO_Control_Command& command, boost::system::error_code& ec)
- {
- if (!is_open(impl))
- {
- ec = boost::asio::error::bad_descriptor;
- return ec;
- }
-
- socket_ops::ioctl(impl.socket_, command.name(),
- static_cast<ioctl_arg_type*>(command.data()), ec);
-
- if (!ec && command.name() == static_cast<int>(FIONBIO))
- {
- if (*static_cast<ioctl_arg_type*>(command.data()))
- impl.flags_ |= implementation_type::user_set_non_blocking;
- else
- impl.flags_ &= ~implementation_type::user_set_non_blocking;
- }
-
- return ec;
- }
-
- // Get the local endpoint.
- endpoint_type local_endpoint(const implementation_type& impl,
- boost::system::error_code& ec) const
- {
- if (!is_open(impl))
- {
- ec = boost::asio::error::bad_descriptor;
- return endpoint_type();
- }
-
- endpoint_type endpoint;
- std::size_t addr_len = endpoint.capacity();
- if (socket_ops::getsockname(impl.socket_, endpoint.data(), &addr_len, ec))
- return endpoint_type();
- endpoint.resize(addr_len);
- return endpoint;
- }
-
- // Get the remote endpoint.
- endpoint_type remote_endpoint(const implementation_type& impl,
- boost::system::error_code& ec) const
- {
- if (!is_open(impl))
- {
- ec = boost::asio::error::bad_descriptor;
- return endpoint_type();
- }
-
- if (impl.socket_.have_remote_endpoint())
- {
- // Check if socket is still connected.
- DWORD connect_time = 0;
- size_t connect_time_len = sizeof(connect_time);
- if (socket_ops::getsockopt(impl.socket_, SOL_SOCKET, SO_CONNECT_TIME,
- &connect_time, &connect_time_len, ec) == socket_error_retval)
- {
- return endpoint_type();
- }
- if (connect_time == 0xFFFFFFFF)
- {
- ec = boost::asio::error::not_connected;
- return endpoint_type();
- }
-
- ec = boost::system::error_code();
- return impl.socket_.remote_endpoint();
- }
- else
- {
- endpoint_type endpoint;
- std::size_t addr_len = endpoint.capacity();
- if (socket_ops::getpeername(impl.socket_, endpoint.data(), &addr_len, ec))
- return endpoint_type();
- endpoint.resize(addr_len);
- return endpoint;
- }
- }
-
- /// Disable sends or receives on the socket.
- boost::system::error_code shutdown(implementation_type& impl,
- socket_base::shutdown_type what, boost::system::error_code& ec)
- {
- if (!is_open(impl))
- {
- ec = boost::asio::error::bad_descriptor;
- return ec;
- }
-
- socket_ops::shutdown(impl.socket_, what, ec);
- return ec;
- }
-
- // Send the given data to the peer. Returns the number of bytes sent.
- template <typename ConstBufferSequence>
- size_t send(implementation_type& impl, const ConstBufferSequence& buffers,
- socket_base::message_flags flags, boost::system::error_code& ec)
- {
- if (!is_open(impl))
- {
- ec = boost::asio::error::bad_descriptor;
- return 0;
- }
-
- // Copy buffers into WSABUF array.
- ::WSABUF bufs[max_buffers];
- typename ConstBufferSequence::const_iterator iter = buffers.begin();
- typename ConstBufferSequence::const_iterator end = buffers.end();
- DWORD i = 0;
- size_t total_buffer_size = 0;
- for (; iter != end && i < max_buffers; ++iter, ++i)
- {
- boost::asio::const_buffer buffer(*iter);
- bufs[i].len = static_cast<u_long>(boost::asio::buffer_size(buffer));
- bufs[i].buf = const_cast<char*>(
- boost::asio::buffer_cast<const char*>(buffer));
- total_buffer_size += boost::asio::buffer_size(buffer);
- }
-
- // A request to receive 0 bytes on a stream socket is a no-op.
- if (impl.protocol_.type() == SOCK_STREAM && total_buffer_size == 0)
- {
- ec = boost::system::error_code();
- return 0;
- }
-
- // Send the data.
- DWORD bytes_transferred = 0;
- int result = ::WSASend(impl.socket_, bufs,
- i, &bytes_transferred, flags, 0, 0);
- if (result != 0)
- {
- DWORD last_error = ::WSAGetLastError();
- if (last_error == ERROR_NETNAME_DELETED)
- last_error = WSAECONNRESET;
- else if (last_error == ERROR_PORT_UNREACHABLE)
- last_error = WSAECONNREFUSED;
- ec = boost::system::error_code(last_error,
- boost::asio::error::get_system_category());
- return 0;
- }
-
- ec = boost::system::error_code();
- return bytes_transferred;
- }
-
- // Wait until data can be sent without blocking.
- size_t send(implementation_type& impl, const null_buffers&,
- socket_base::message_flags, boost::system::error_code& ec)
- {
- if (!is_open(impl))
- {
- ec = boost::asio::error::bad_descriptor;
- return 0;
- }
-
- // Wait for socket to become ready.
- socket_ops::poll_write(impl.socket_, ec);
-
- return 0;
- }
-
- template <typename ConstBufferSequence, typename Handler>
- class send_operation
- : public operation
- {
- public:
- send_operation(win_iocp_io_service& io_service,
- weak_cancel_token_type cancel_token,
- const ConstBufferSequence& buffers, Handler handler)
- : operation(io_service,
- &send_operation<ConstBufferSequence, Handler>::do_completion_impl,
- &send_operation<ConstBufferSequence, Handler>::destroy_impl),
- work_(io_service.get_io_service()),
- cancel_token_(cancel_token),
- buffers_(buffers),
- handler_(handler)
- {
- }
-
- private:
- static void do_completion_impl(operation* op,
- DWORD last_error, size_t bytes_transferred)
- {
- // Take ownership of the operation object.
- typedef send_operation<ConstBufferSequence, Handler> op_type;
- op_type* handler_op(static_cast<op_type*>(op));
- typedef handler_alloc_traits<Handler, op_type> alloc_traits;
- handler_ptr<alloc_traits> ptr(handler_op->handler_, handler_op);
-
-#if defined(BOOST_ASIO_ENABLE_BUFFER_DEBUGGING)
- // Check whether buffers are still valid.
- typename ConstBufferSequence::const_iterator iter
- = handler_op->buffers_.begin();
- typename ConstBufferSequence::const_iterator end
- = handler_op->buffers_.end();
- while (iter != end)
- {
- boost::asio::const_buffer buffer(*iter);
- boost::asio::buffer_cast<const char*>(buffer);
- ++iter;
- }
-#endif // defined(BOOST_ASIO_ENABLE_BUFFER_DEBUGGING)
-
- // Map non-portable errors to their portable counterparts.
- boost::system::error_code ec(last_error,
- boost::asio::error::get_system_category());
- if (ec.value() == ERROR_NETNAME_DELETED)
- {
- if (handler_op->cancel_token_.expired())
- ec = boost::asio::error::operation_aborted;
- else
- ec = boost::asio::error::connection_reset;
- }
- else if (ec.value() == ERROR_PORT_UNREACHABLE)
- {
- ec = boost::asio::error::connection_refused;
- }
-
- // Make a copy of the handler so that the memory can be deallocated before
- // the upcall is made.
- Handler handler(handler_op->handler_);
-
- // Free the memory associated with the handler.
- ptr.reset();
-
- // Call the handler.
- boost_asio_handler_invoke_helpers::invoke(
- detail::bind_handler(handler, ec, bytes_transferred), &handler);
- }
-
- static void destroy_impl(operation* op)
- {
- // Take ownership of the operation object.
- typedef send_operation<ConstBufferSequence, Handler> op_type;
- op_type* handler_op(static_cast<op_type*>(op));
- typedef handler_alloc_traits<Handler, op_type> alloc_traits;
- handler_ptr<alloc_traits> ptr(handler_op->handler_, handler_op);
-
- // 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.
- Handler handler(handler_op->handler_);
- (void)handler;
-
- // Free the memory associated with the handler.
- ptr.reset();
- }
-
- boost::asio::io_service::work work_;
- weak_cancel_token_type cancel_token_;
- ConstBufferSequence buffers_;
- Handler handler_;
- };
-
- // 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(implementation_type& impl, const ConstBufferSequence& buffers,
- socket_base::message_flags flags, Handler handler)
- {
- if (!is_open(impl))
- {
- this->get_io_service().post(bind_handler(handler,
- boost::asio::error::bad_descriptor, 0));
- return;
- }
-
-#if defined(BOOST_ASIO_ENABLE_CANCELIO)
- // Update the ID of the thread from which cancellation is safe.
- if (impl.safe_cancellation_thread_id_ == 0)
- impl.safe_cancellation_thread_id_ = ::GetCurrentThreadId();
- else if (impl.safe_cancellation_thread_id_ != ::GetCurrentThreadId())
- impl.safe_cancellation_thread_id_ = ~DWORD(0);
-#endif // defined(BOOST_ASIO_ENABLE_CANCELIO)
-
- // Allocate and construct an operation to wrap the handler.
- typedef send_operation<ConstBufferSequence, Handler> value_type;
- typedef handler_alloc_traits<Handler, value_type> alloc_traits;
- raw_handler_ptr<alloc_traits> raw_ptr(handler);
- handler_ptr<alloc_traits> ptr(raw_ptr, iocp_service_,
- impl.cancel_token_, buffers, handler);
-
- // Copy buffers into WSABUF array.
- ::WSABUF bufs[max_buffers];
- typename ConstBufferSequence::const_iterator iter = buffers.begin();
- typename ConstBufferSequence::const_iterator end = buffers.end();
- DWORD i = 0;
- size_t total_buffer_size = 0;
- for (; iter != end && i < max_buffers; ++iter, ++i)
- {
- boost::asio::const_buffer buffer(*iter);
- bufs[i].len = static_cast<u_long>(boost::asio::buffer_size(buffer));
- bufs[i].buf = const_cast<char*>(
- boost::asio::buffer_cast<const char*>(buffer));
- total_buffer_size += boost::asio::buffer_size(buffer);
- }
-
- // A request to receive 0 bytes on a stream socket is a no-op.
- if (impl.protocol_.type() == SOCK_STREAM && total_buffer_size == 0)
- {
- boost::asio::io_service::work work(this->get_io_service());
- ptr.reset();
- boost::system::error_code error;
- iocp_service_.post(bind_handler(handler, error, 0));
- return;
- }
-
- // Send the data.
- DWORD bytes_transferred = 0;
- int result = ::WSASend(impl.socket_, bufs, i,
- &bytes_transferred, flags, ptr.get(), 0);
- DWORD last_error = ::WSAGetLastError();
-
- // Check if the operation completed immediately.
- if (result != 0 && last_error != WSA_IO_PENDING)
- {
- boost::asio::io_service::work work(this->get_io_service());
- ptr.reset();
- boost::system::error_code ec(last_error,
- boost::asio::error::get_system_category());
- iocp_service_.post(bind_handler(handler, ec, bytes_transferred));
- }
- else
- {
- ptr.release();
- }
- }
-
- template <typename Handler>
- class null_buffers_operation
- {
- public:
- null_buffers_operation(boost::asio::io_service& io_service, Handler handler)
- : work_(io_service),
- handler_(handler)
- {
- }
-
- bool perform(boost::system::error_code&,
- std::size_t& bytes_transferred)
- {
- bytes_transferred = 0;
- return true;
- }
-
- void complete(const boost::system::error_code& ec,
- std::size_t bytes_transferred)
- {
- work_.get_io_service().post(bind_handler(
- handler_, ec, bytes_transferred));
- }
-
- private:
- boost::asio::io_service::work work_;
- Handler handler_;
- };
-
- // Start an asynchronous wait until data can be sent without blocking.
- template <typename Handler>
- void async_send(implementation_type& impl, const null_buffers&,
- socket_base::message_flags, Handler handler)
- {
- if (!is_open(impl))
- {
- this->get_io_service().post(bind_handler(handler,
- boost::asio::error::bad_descriptor, 0));
- }
- else
- {
- // Check if the reactor was already obtained from the io_service.
- reactor_type* reactor = static_cast<reactor_type*>(
- interlocked_compare_exchange_pointer(
- reinterpret_cast<void**>(&reactor_), 0, 0));
- if (!reactor)
- {
- reactor = &(boost::asio::use_service<reactor_type>(
- this->get_io_service()));
- interlocked_exchange_pointer(
- reinterpret_cast<void**>(&reactor_), reactor);
- }
-
- reactor->start_write_op(impl.socket_, impl.reactor_data_,
- null_buffers_operation<Handler>(this->get_io_service(), handler),
- false);
- }
- }
-
- // Send a datagram to the specified endpoint. Returns the number of bytes
- // sent.
- template <typename ConstBufferSequence>
- size_t send_to(implementation_type& impl, const ConstBufferSequence& buffers,
- const endpoint_type& destination, socket_base::message_flags flags,
- boost::system::error_code& ec)
- {
- if (!is_open(impl))
- {
- ec = boost::asio::error::bad_descriptor;
- return 0;
- }
-
- // Copy buffers into WSABUF array.
- ::WSABUF bufs[max_buffers];
- typename ConstBufferSequence::const_iterator iter = buffers.begin();
- typename ConstBufferSequence::const_iterator end = buffers.end();
- DWORD i = 0;
- for (; iter != end && i < max_buffers; ++iter, ++i)
- {
- boost::asio::const_buffer buffer(*iter);
- bufs[i].len = static_cast<u_long>(boost::asio::buffer_size(buffer));
- bufs[i].buf = const_cast<char*>(
- boost::asio::buffer_cast<const char*>(buffer));
- }
-
- // Send the data.
- DWORD bytes_transferred = 0;
- int result = ::WSASendTo(impl.socket_, bufs, i, &bytes_transferred,
- flags, destination.data(), static_cast<int>(destination.size()), 0, 0);
- if (result != 0)
- {
- DWORD last_error = ::WSAGetLastError();
- if (last_error == ERROR_PORT_UNREACHABLE)
- last_error = WSAECONNREFUSED;
- ec = boost::system::error_code(last_error,
- boost::asio::error::get_system_category());
- return 0;
- }
-
- ec = boost::system::error_code();
- return bytes_transferred;
- }
-
- // Wait until data can be sent without blocking.
- size_t send_to(implementation_type& impl, const null_buffers&,
- socket_base::message_flags, const endpoint_type&,
- boost::system::error_code& ec)
- {
- if (!is_open(impl))
- {
- ec = boost::asio::error::bad_descriptor;
- return 0;
- }
-
- // Wait for socket to become ready.
- socket_ops::poll_write(impl.socket_, ec);
-
- return 0;
- }
-
- template <typename ConstBufferSequence, typename Handler>
- class send_to_operation
- : public operation
- {
- public:
- send_to_operation(win_iocp_io_service& io_service,
- const ConstBufferSequence& buffers, Handler handler)
- : operation(io_service,
- &send_to_operation<ConstBufferSequence, Handler>::do_completion_impl,
- &send_to_operation<ConstBufferSequence, Handler>::destroy_impl),
- work_(io_service.get_io_service()),
- buffers_(buffers),
- handler_(handler)
- {
- }
-
- private:
- static void do_completion_impl(operation* op,
- DWORD last_error, size_t bytes_transferred)
- {
- // Take ownership of the operation object.
- typedef send_to_operation<ConstBufferSequence, Handler> op_type;
- op_type* handler_op(static_cast<op_type*>(op));
- typedef handler_alloc_traits<Handler, op_type> alloc_traits;
- handler_ptr<alloc_traits> ptr(handler_op->handler_, handler_op);
-
-#if defined(BOOST_ASIO_ENABLE_BUFFER_DEBUGGING)
- // Check whether buffers are still valid.
- typename ConstBufferSequence::const_iterator iter
- = handler_op->buffers_.begin();
- typename ConstBufferSequence::const_iterator end
- = handler_op->buffers_.end();
- while (iter != end)
- {
- boost::asio::const_buffer buffer(*iter);
- boost::asio::buffer_cast<const char*>(buffer);
- ++iter;
- }
-#endif // defined(BOOST_ASIO_ENABLE_BUFFER_DEBUGGING)
-
- // Map non-portable errors to their portable counterparts.
- boost::system::error_code ec(last_error,
- boost::asio::error::get_system_category());
- if (ec.value() == ERROR_PORT_UNREACHABLE)
- {
- ec = boost::asio::error::connection_refused;
- }
-
- // Make a copy of the handler so that the memory can be deallocated before
- // the upcall is made.
- Handler handler(handler_op->handler_);
-
- // Free the memory associated with the handler.
- ptr.reset();
-
- // Call the handler.
- boost_asio_handler_invoke_helpers::invoke(
- detail::bind_handler(handler, ec, bytes_transferred), &handler);
- }
-
- static void destroy_impl(operation* op)
- {
- // Take ownership of the operation object.
- typedef send_to_operation<ConstBufferSequence, Handler> op_type;
- op_type* handler_op(static_cast<op_type*>(op));
- typedef handler_alloc_traits<Handler, op_type> alloc_traits;
- handler_ptr<alloc_traits> ptr(handler_op->handler_, handler_op);
-
- // 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.
- Handler handler(handler_op->handler_);
- (void)handler;
-
- // Free the memory associated with the handler.
- ptr.reset();
- }
-
- boost::asio::io_service::work work_;
- ConstBufferSequence buffers_;
- Handler handler_;
- };
-
- // 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_to(implementation_type& impl,
- const ConstBufferSequence& buffers, const endpoint_type& destination,
- socket_base::message_flags flags, Handler handler)
- {
- if (!is_open(impl))
- {
- this->get_io_service().post(bind_handler(handler,
- boost::asio::error::bad_descriptor, 0));
- return;
- }
-
-#if defined(BOOST_ASIO_ENABLE_CANCELIO)
- // Update the ID of the thread from which cancellation is safe.
- if (impl.safe_cancellation_thread_id_ == 0)
- impl.safe_cancellation_thread_id_ = ::GetCurrentThreadId();
- else if (impl.safe_cancellation_thread_id_ != ::GetCurrentThreadId())
- impl.safe_cancellation_thread_id_ = ~DWORD(0);
-#endif // defined(BOOST_ASIO_ENABLE_CANCELIO)
-
- // Allocate and construct an operation to wrap the handler.
- typedef send_to_operation<ConstBufferSequence, Handler> value_type;
- typedef handler_alloc_traits<Handler, value_type> alloc_traits;
- raw_handler_ptr<alloc_traits> raw_ptr(handler);
- handler_ptr<alloc_traits> ptr(raw_ptr, iocp_service_, buffers, handler);
-
- // Copy buffers into WSABUF array.
- ::WSABUF bufs[max_buffers];
- typename ConstBufferSequence::const_iterator iter = buffers.begin();
- typename ConstBufferSequence::const_iterator end = buffers.end();
- DWORD i = 0;
- for (; iter != end && i < max_buffers; ++iter, ++i)
- {
- boost::asio::const_buffer buffer(*iter);
- bufs[i].len = static_cast<u_long>(boost::asio::buffer_size(buffer));
- bufs[i].buf = const_cast<char*>(
- boost::asio::buffer_cast<const char*>(buffer));
- }
-
- // Send the data.
- DWORD bytes_transferred = 0;
- int result = ::WSASendTo(impl.socket_, bufs, i, &bytes_transferred, flags,
- destination.data(), static_cast<int>(destination.size()), ptr.get(), 0);
- DWORD last_error = ::WSAGetLastError();
-
- // Check if the operation completed immediately.
- if (result != 0 && last_error != WSA_IO_PENDING)
- {
- boost::asio::io_service::work work(this->get_io_service());
- ptr.reset();
- boost::system::error_code ec(last_error,
- boost::asio::error::get_system_category());
- iocp_service_.post(bind_handler(handler, ec, bytes_transferred));
- }
- else
- {
- ptr.release();
- }
- }
-
- // Start an asynchronous wait until data can be sent without blocking.
- template <typename Handler>
- void async_send_to(implementation_type& impl, const null_buffers&,
- socket_base::message_flags, const endpoint_type&, Handler handler)
- {
- if (!is_open(impl))
- {
- this->get_io_service().post(bind_handler(handler,
- boost::asio::error::bad_descriptor, 0));
- }
- else
- {
- // Check if the reactor was already obtained from the io_service.
- reactor_type* reactor = static_cast<reactor_type*>(
- interlocked_compare_exchange_pointer(
- reinterpret_cast<void**>(&reactor_), 0, 0));
- if (!reactor)
- {
- reactor = &(boost::asio::use_service<reactor_type>(
- this->get_io_service()));
- interlocked_exchange_pointer(
- reinterpret_cast<void**>(&reactor_), reactor);
- }
-
- reactor->start_write_op(impl.socket_, impl.reactor_data_,
- null_buffers_operation<Handler>(this->get_io_service(), handler),
- false);
- }
- }
-
- // Receive some data from the peer. Returns the number of bytes received.
- template <typename MutableBufferSequence>
- size_t receive(implementation_type& impl,
- const MutableBufferSequence& buffers,
- socket_base::message_flags flags, boost::system::error_code& ec)
- {
- if (!is_open(impl))
- {
- ec = boost::asio::error::bad_descriptor;
- return 0;
- }
-
- // Copy buffers into WSABUF array.
- ::WSABUF bufs[max_buffers];
- typename MutableBufferSequence::const_iterator iter = buffers.begin();
- typename MutableBufferSequence::const_iterator end = buffers.end();
- DWORD i = 0;
- size_t total_buffer_size = 0;
- for (; iter != end && i < max_buffers; ++iter, ++i)
- {
- boost::asio::mutable_buffer buffer(*iter);
- bufs[i].len = static_cast<u_long>(boost::asio::buffer_size(buffer));
- bufs[i].buf = boost::asio::buffer_cast<char*>(buffer);
- total_buffer_size += boost::asio::buffer_size(buffer);
- }
-
- // A request to receive 0 bytes on a stream socket is a no-op.
- if (impl.protocol_.type() == SOCK_STREAM && total_buffer_size == 0)
- {
- ec = boost::system::error_code();
- return 0;
- }
-
- // Receive some data.
- DWORD bytes_transferred = 0;
- DWORD recv_flags = flags;
- int result = ::WSARecv(impl.socket_, bufs, i,
- &bytes_transferred, &recv_flags, 0, 0);
- if (result != 0)
- {
- DWORD last_error = ::WSAGetLastError();
- if (last_error == ERROR_NETNAME_DELETED)
- last_error = WSAECONNRESET;
- else if (last_error == ERROR_PORT_UNREACHABLE)
- last_error = WSAECONNREFUSED;
- ec = boost::system::error_code(last_error,
- boost::asio::error::get_system_category());
- return 0;
- }
- if (bytes_transferred == 0 && impl.protocol_.type() == SOCK_STREAM)
- {
- ec = boost::asio::error::eof;
- return 0;
- }
-
- ec = boost::system::error_code();
- return bytes_transferred;
- }
-
- // Wait until data can be received without blocking.
- size_t receive(implementation_type& impl, const null_buffers&,
- socket_base::message_flags, boost::system::error_code& ec)
- {
- if (!is_open(impl))
- {
- ec = boost::asio::error::bad_descriptor;
- return 0;
- }
-
- // Wait for socket to become ready.
- socket_ops::poll_read(impl.socket_, ec);
-
- return 0;
- }
-
- template <typename MutableBufferSequence, typename Handler>
- class receive_operation
- : public operation
- {
- public:
- receive_operation(int protocol_type, win_iocp_io_service& io_service,
- weak_cancel_token_type cancel_token,
- const MutableBufferSequence& buffers, Handler handler)
- : operation(io_service,
- &receive_operation<
- MutableBufferSequence, Handler>::do_completion_impl,
- &receive_operation<
- MutableBufferSequence, Handler>::destroy_impl),
- protocol_type_(protocol_type),
- work_(io_service.get_io_service()),
- cancel_token_(cancel_token),
- buffers_(buffers),
- handler_(handler)
- {
- }
-
- private:
- static void do_completion_impl(operation* op,
- DWORD last_error, size_t bytes_transferred)
- {
- // Take ownership of the operation object.
- typedef receive_operation<MutableBufferSequence, Handler> op_type;
- op_type* handler_op(static_cast<op_type*>(op));
- typedef handler_alloc_traits<Handler, op_type> alloc_traits;
- handler_ptr<alloc_traits> ptr(handler_op->handler_, handler_op);
-
-#if defined(BOOST_ASIO_ENABLE_BUFFER_DEBUGGING)
- // Check whether buffers are still valid.
- typename MutableBufferSequence::const_iterator iter
- = handler_op->buffers_.begin();
- typename MutableBufferSequence::const_iterator end
- = handler_op->buffers_.end();
- while (iter != end)
- {
- boost::asio::mutable_buffer buffer(*iter);
- boost::asio::buffer_cast<char*>(buffer);
- ++iter;
- }
-#endif // defined(BOOST_ASIO_ENABLE_BUFFER_DEBUGGING)
-
- // Map non-portable errors to their portable counterparts.
- boost::system::error_code ec(last_error,
- boost::asio::error::get_system_category());
- if (ec.value() == ERROR_NETNAME_DELETED)
- {
- if (handler_op->cancel_token_.expired())
- ec = boost::asio::error::operation_aborted;
- else
- ec = boost::asio::error::connection_reset;
- }
- else if (ec.value() == ERROR_PORT_UNREACHABLE)
- {
- ec = boost::asio::error::connection_refused;
- }
-
- // Check for connection closed.
- else if (!ec && bytes_transferred == 0
- && handler_op->protocol_type_ == SOCK_STREAM
- && !boost::is_same<MutableBufferSequence, null_buffers>::value)
- {
- ec = boost::asio::error::eof;
- }
-
- // Make a copy of the handler so that the memory can be deallocated before
- // the upcall is made.
- Handler handler(handler_op->handler_);
-
- // Free the memory associated with the handler.
- ptr.reset();
-
- // Call the handler.
- boost_asio_handler_invoke_helpers::invoke(
- detail::bind_handler(handler, ec, bytes_transferred), &handler);
- }
-
- static void destroy_impl(operation* op)
- {
- // Take ownership of the operation object.
- typedef receive_operation<MutableBufferSequence, Handler> op_type;
- op_type* handler_op(static_cast<op_type*>(op));
- typedef handler_alloc_traits<Handler, op_type> alloc_traits;
- handler_ptr<alloc_traits> ptr(handler_op->handler_, handler_op);
-
- // 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.
- Handler handler(handler_op->handler_);
- (void)handler;
-
- // Free the memory associated with the handler.
- ptr.reset();
- }
-
- int protocol_type_;
- boost::asio::io_service::work work_;
- weak_cancel_token_type cancel_token_;
- MutableBufferSequence buffers_;
- Handler handler_;
- };
-
- // 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(implementation_type& impl,
- const MutableBufferSequence& buffers,
- socket_base::message_flags flags, Handler handler)
- {
- if (!is_open(impl))
- {
- this->get_io_service().post(bind_handler(handler,
- boost::asio::error::bad_descriptor, 0));
- return;
- }
-
-#if defined(BOOST_ASIO_ENABLE_CANCELIO)
- // Update the ID of the thread from which cancellation is safe.
- if (impl.safe_cancellation_thread_id_ == 0)
- impl.safe_cancellation_thread_id_ = ::GetCurrentThreadId();
- else if (impl.safe_cancellation_thread_id_ != ::GetCurrentThreadId())
- impl.safe_cancellation_thread_id_ = ~DWORD(0);
-#endif // defined(BOOST_ASIO_ENABLE_CANCELIO)
-
- // Allocate and construct an operation to wrap the handler.
- typedef receive_operation<MutableBufferSequence, Handler> value_type;
- typedef handler_alloc_traits<Handler, value_type> alloc_traits;
- raw_handler_ptr<alloc_traits> raw_ptr(handler);
- int protocol_type = impl.protocol_.type();
- handler_ptr<alloc_traits> ptr(raw_ptr, protocol_type,
- iocp_service_, impl.cancel_token_, buffers, handler);
-
- // Copy buffers into WSABUF array.
- ::WSABUF bufs[max_buffers];
- typename MutableBufferSequence::const_iterator iter = buffers.begin();
- typename MutableBufferSequence::const_iterator end = buffers.end();
- DWORD i = 0;
- size_t total_buffer_size = 0;
- for (; iter != end && i < max_buffers; ++iter, ++i)
- {
- boost::asio::mutable_buffer buffer(*iter);
- bufs[i].len = static_cast<u_long>(boost::asio::buffer_size(buffer));
- bufs[i].buf = boost::asio::buffer_cast<char*>(buffer);
- total_buffer_size += boost::asio::buffer_size(buffer);
- }
-
- // A request to receive 0 bytes on a stream socket is a no-op.
- if (impl.protocol_.type() == SOCK_STREAM && total_buffer_size == 0)
- {
- boost::asio::io_service::work work(this->get_io_service());
- ptr.reset();
- boost::system::error_code error;
- iocp_service_.post(bind_handler(handler, error, 0));
- return;
- }
-
- // Receive some data.
- DWORD bytes_transferred = 0;
- DWORD recv_flags = flags;
- int result = ::WSARecv(impl.socket_, bufs, i,
- &bytes_transferred, &recv_flags, ptr.get(), 0);
- DWORD last_error = ::WSAGetLastError();
- if (result != 0 && last_error != WSA_IO_PENDING)
- {
- boost::asio::io_service::work work(this->get_io_service());
- ptr.reset();
- boost::system::error_code ec(last_error,
- boost::asio::error::get_system_category());
- iocp_service_.post(bind_handler(handler, ec, bytes_transferred));
- }
- else
- {
- ptr.release();
- }
- }
-
- // Wait until data can be received without blocking.
- template <typename Handler>
- void async_receive(implementation_type& impl, const null_buffers& buffers,
- socket_base::message_flags flags, Handler handler)
- {
- if (!is_open(impl))
- {
- this->get_io_service().post(bind_handler(handler,
- boost::asio::error::bad_descriptor, 0));
- }
- else if (impl.protocol_.type() == SOCK_STREAM)
- {
- // For stream sockets on Windows, we may issue a 0-byte overlapped
- // WSARecv to wait until there is data available on the socket.
-
-#if defined(BOOST_ASIO_ENABLE_CANCELIO)
- // Update the ID of the thread from which cancellation is safe.
- if (impl.safe_cancellation_thread_id_ == 0)
- impl.safe_cancellation_thread_id_ = ::GetCurrentThreadId();
- else if (impl.safe_cancellation_thread_id_ != ::GetCurrentThreadId())
- impl.safe_cancellation_thread_id_ = ~DWORD(0);
-#endif // defined(BOOST_ASIO_ENABLE_CANCELIO)
-
- // Allocate and construct an operation to wrap the handler.
- typedef receive_operation<null_buffers, Handler> value_type;
- typedef handler_alloc_traits<Handler, value_type> alloc_traits;
- raw_handler_ptr<alloc_traits> raw_ptr(handler);
- int protocol_type = impl.protocol_.type();
- handler_ptr<alloc_traits> ptr(raw_ptr, protocol_type,
- iocp_service_, impl.cancel_token_, buffers, handler);
-
- // Issue a receive operation with an empty buffer.
- ::WSABUF buf = { 0, 0 };
- DWORD bytes_transferred = 0;
- DWORD recv_flags = flags;
- int result = ::WSARecv(impl.socket_, &buf, 1,
- &bytes_transferred, &recv_flags, ptr.get(), 0);
- DWORD last_error = ::WSAGetLastError();
- if (result != 0 && last_error != WSA_IO_PENDING)
- {
- boost::asio::io_service::work work(this->get_io_service());
- ptr.reset();
- boost::system::error_code ec(last_error,
- boost::asio::error::get_system_category());
- iocp_service_.post(bind_handler(handler, ec, bytes_transferred));
- }
- else
- {
- ptr.release();
- }
- }
- else
- {
- // Check if the reactor was already obtained from the io_service.
- reactor_type* reactor = static_cast<reactor_type*>(
- interlocked_compare_exchange_pointer(
- reinterpret_cast<void**>(&reactor_), 0, 0));
- if (!reactor)
- {
- reactor = &(boost::asio::use_service<reactor_type>(
- this->get_io_service()));
- interlocked_exchange_pointer(
- reinterpret_cast<void**>(&reactor_), reactor);
- }
-
- if (flags & socket_base::message_out_of_band)
- {
- reactor->start_except_op(impl.socket_, impl.reactor_data_,
- null_buffers_operation<Handler>(this->get_io_service(), handler));
- }
- else
- {
- reactor->start_read_op(impl.socket_, impl.reactor_data_,
- null_buffers_operation<Handler>(this->get_io_service(), handler),
- false);
- }
- }
- }
-
- // Receive a datagram with the endpoint of the sender. Returns the number of
- // bytes received.
- template <typename MutableBufferSequence>
- size_t receive_from(implementation_type& impl,
- const MutableBufferSequence& buffers,
- endpoint_type& sender_endpoint, socket_base::message_flags flags,
- boost::system::error_code& ec)
- {
- if (!is_open(impl))
- {
- ec = boost::asio::error::bad_descriptor;
- return 0;
- }
-
- // Copy buffers into WSABUF array.
- ::WSABUF bufs[max_buffers];
- typename MutableBufferSequence::const_iterator iter = buffers.begin();
- typename MutableBufferSequence::const_iterator end = buffers.end();
- DWORD i = 0;
- for (; iter != end && i < max_buffers; ++iter, ++i)
- {
- boost::asio::mutable_buffer buffer(*iter);
- bufs[i].len = static_cast<u_long>(boost::asio::buffer_size(buffer));
- bufs[i].buf = boost::asio::buffer_cast<char*>(buffer);
- }
-
- // Receive some data.
- DWORD bytes_transferred = 0;
- DWORD recv_flags = flags;
- int endpoint_size = static_cast<int>(sender_endpoint.capacity());
- int result = ::WSARecvFrom(impl.socket_, bufs, i, &bytes_transferred,
- &recv_flags, sender_endpoint.data(), &endpoint_size, 0, 0);
- if (result != 0)
- {
- DWORD last_error = ::WSAGetLastError();
- if (last_error == ERROR_PORT_UNREACHABLE)
- last_error = WSAECONNREFUSED;
- ec = boost::system::error_code(last_error,
- boost::asio::error::get_system_category());
- return 0;
- }
- if (bytes_transferred == 0 && impl.protocol_.type() == SOCK_STREAM)
- {
- ec = boost::asio::error::eof;
- return 0;
- }
-
- sender_endpoint.resize(static_cast<std::size_t>(endpoint_size));
-
- ec = boost::system::error_code();
- return bytes_transferred;
- }
-
- // Wait until data can be received without blocking.
- size_t receive_from(implementation_type& impl,
- const null_buffers&, endpoint_type& sender_endpoint,
- socket_base::message_flags, boost::system::error_code& ec)
- {
- if (!is_open(impl))
- {
- ec = boost::asio::error::bad_descriptor;
- return 0;
- }
-
- // Wait for socket to become ready.
- socket_ops::poll_read(impl.socket_, ec);
-
- // Reset endpoint since it can be given no sensible value at this time.
- sender_endpoint = endpoint_type();
-
- return 0;
- }
-
- template <typename MutableBufferSequence, typename Handler>
- class receive_from_operation
- : public operation
- {
- public:
- receive_from_operation(int protocol_type, win_iocp_io_service& io_service,
- endpoint_type& endpoint, const MutableBufferSequence& buffers,
- Handler handler)
- : operation(io_service,
- &receive_from_operation<
- MutableBufferSequence, Handler>::do_completion_impl,
- &receive_from_operation<
- MutableBufferSequence, Handler>::destroy_impl),
- protocol_type_(protocol_type),
- endpoint_(endpoint),
- endpoint_size_(static_cast<int>(endpoint.capacity())),
- work_(io_service.get_io_service()),
- buffers_(buffers),
- handler_(handler)
- {
- }
-
- int& endpoint_size()
- {
- return endpoint_size_;
- }
-
- private:
- static void do_completion_impl(operation* op,
- DWORD last_error, size_t bytes_transferred)
- {
- // Take ownership of the operation object.
- typedef receive_from_operation<MutableBufferSequence, Handler> op_type;
- op_type* handler_op(static_cast<op_type*>(op));
- typedef handler_alloc_traits<Handler, op_type> alloc_traits;
- handler_ptr<alloc_traits> ptr(handler_op->handler_, handler_op);
-
-#if defined(BOOST_ASIO_ENABLE_BUFFER_DEBUGGING)
- // Check whether buffers are still valid.
- typename MutableBufferSequence::const_iterator iter
- = handler_op->buffers_.begin();
- typename MutableBufferSequence::const_iterator end
- = handler_op->buffers_.end();
- while (iter != end)
- {
- boost::asio::mutable_buffer buffer(*iter);
- boost::asio::buffer_cast<char*>(buffer);
- ++iter;
- }
-#endif // defined(BOOST_ASIO_ENABLE_BUFFER_DEBUGGING)
-
- // Map non-portable errors to their portable counterparts.
- boost::system::error_code ec(last_error,
- boost::asio::error::get_system_category());
- if (ec.value() == ERROR_PORT_UNREACHABLE)
- {
- ec = boost::asio::error::connection_refused;
- }
-
- // Check for connection closed.
- if (!ec && bytes_transferred == 0
- && handler_op->protocol_type_ == SOCK_STREAM)
- {
- ec = boost::asio::error::eof;
- }
-
- // Record the size of the endpoint returned by the operation.
- handler_op->endpoint_.resize(handler_op->endpoint_size_);
-
- // Make a copy of the handler so that the memory can be deallocated before
- // the upcall is made.
- Handler handler(handler_op->handler_);
-
- // Free the memory associated with the handler.
- ptr.reset();
-
- // Call the handler.
- boost_asio_handler_invoke_helpers::invoke(
- detail::bind_handler(handler, ec, bytes_transferred), &handler);
- }
-
- static void destroy_impl(operation* op)
- {
- // Take ownership of the operation object.
- typedef receive_from_operation<MutableBufferSequence, Handler> op_type;
- op_type* handler_op(static_cast<op_type*>(op));
- typedef handler_alloc_traits<Handler, op_type> alloc_traits;
- handler_ptr<alloc_traits> ptr(handler_op->handler_, handler_op);
-
- // 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.
- Handler handler(handler_op->handler_);
- (void)handler;
-
- // Free the memory associated with the handler.
- ptr.reset();
- }
-
- int protocol_type_;
- endpoint_type& endpoint_;
- int endpoint_size_;
- boost::asio::io_service::work work_;
- MutableBufferSequence buffers_;
- Handler handler_;
- };
-
- // Start an asynchronous receive. The buffer for the data being received and
- // the sender_endpoint object must both be valid for the lifetime of the
- // asynchronous operation.
- template <typename MutableBufferSequence, typename Handler>
- void async_receive_from(implementation_type& impl,
- const MutableBufferSequence& buffers, endpoint_type& sender_endp,
- socket_base::message_flags flags, Handler handler)
- {
- if (!is_open(impl))
- {
- this->get_io_service().post(bind_handler(handler,
- boost::asio::error::bad_descriptor, 0));
- return;
- }
-
-#if defined(BOOST_ASIO_ENABLE_CANCELIO)
- // Update the ID of the thread from which cancellation is safe.
- if (impl.safe_cancellation_thread_id_ == 0)
- impl.safe_cancellation_thread_id_ = ::GetCurrentThreadId();
- else if (impl.safe_cancellation_thread_id_ != ::GetCurrentThreadId())
- impl.safe_cancellation_thread_id_ = ~DWORD(0);
-#endif // defined(BOOST_ASIO_ENABLE_CANCELIO)
-
- // Allocate and construct an operation to wrap the handler.
- typedef receive_from_operation<MutableBufferSequence, Handler> value_type;
- typedef handler_alloc_traits<Handler, value_type> alloc_traits;
- raw_handler_ptr<alloc_traits> raw_ptr(handler);
- int protocol_type = impl.protocol_.type();
- handler_ptr<alloc_traits> ptr(raw_ptr, protocol_type,
- iocp_service_, sender_endp, buffers, handler);
-
- // Copy buffers into WSABUF array.
- ::WSABUF bufs[max_buffers];
- typename MutableBufferSequence::const_iterator iter = buffers.begin();
- typename MutableBufferSequence::const_iterator end = buffers.end();
- DWORD i = 0;
- for (; iter != end && i < max_buffers; ++iter, ++i)
- {
- boost::asio::mutable_buffer buffer(*iter);
- bufs[i].len = static_cast<u_long>(boost::asio::buffer_size(buffer));
- bufs[i].buf = boost::asio::buffer_cast<char*>(buffer);
- }
-
- // Receive some data.
- DWORD bytes_transferred = 0;
- DWORD recv_flags = flags;
- int result = ::WSARecvFrom(impl.socket_, bufs, i, &bytes_transferred,
- &recv_flags, sender_endp.data(), &ptr.get()->endpoint_size(),
- ptr.get(), 0);
- DWORD last_error = ::WSAGetLastError();
- if (result != 0 && last_error != WSA_IO_PENDING)
- {
- boost::asio::io_service::work work(this->get_io_service());
- ptr.reset();
- boost::system::error_code ec(last_error,
- boost::asio::error::get_system_category());
- iocp_service_.post(bind_handler(handler, ec, bytes_transferred));
- }
- else
- {
- ptr.release();
- }
- }
-
- // Wait until data can be received without blocking.
- template <typename Handler>
- void async_receive_from(implementation_type& impl,
- const null_buffers&, endpoint_type& sender_endpoint,
- socket_base::message_flags flags, Handler handler)
- {
- if (!is_open(impl))
- {
- this->get_io_service().post(bind_handler(handler,
- boost::asio::error::bad_descriptor, 0));
- }
- else
- {
- // Check if the reactor was already obtained from the io_service.
- reactor_type* reactor = static_cast<reactor_type*>(
- interlocked_compare_exchange_pointer(
- reinterpret_cast<void**>(&reactor_), 0, 0));
- if (!reactor)
- {
- reactor = &(boost::asio::use_service<reactor_type>(
- this->get_io_service()));
- interlocked_exchange_pointer(
- reinterpret_cast<void**>(&reactor_), reactor);
- }
-
- // Reset endpoint since it can be given no sensible value at this time.
- sender_endpoint = endpoint_type();
-
- if (flags & socket_base::message_out_of_band)
- {
- reactor->start_except_op(impl.socket_, impl.reactor_data_,
- null_buffers_operation<Handler>(this->get_io_service(), handler));
- }
- else
- {
- reactor->start_read_op(impl.socket_, impl.reactor_data_,
- null_buffers_operation<Handler>(this->get_io_service(), handler),
- false);
- }
- }
- }
-
- // Accept a new connection.
- template <typename Socket>
- boost::system::error_code accept(implementation_type& impl, Socket& peer,
- endpoint_type* peer_endpoint, boost::system::error_code& ec)
- {
- if (!is_open(impl))
- {
- ec = boost::asio::error::bad_descriptor;
- return ec;
- }
-
- // We cannot accept a socket that is already open.
- if (peer.is_open())
- {
- ec = boost::asio::error::already_open;
- return ec;
- }
-
- for (;;)
- {
- socket_holder new_socket;
- std::size_t addr_len = 0;
- if (peer_endpoint)
- {
- addr_len = peer_endpoint->capacity();
- new_socket.reset(socket_ops::accept(impl.socket_,
- peer_endpoint->data(), &addr_len, ec));
- }
- else
- {
- new_socket.reset(socket_ops::accept(impl.socket_, 0, 0, ec));
- }
-
- if (ec)
- {
- if (ec == boost::asio::error::connection_aborted
- && !(impl.flags_ & implementation_type::enable_connection_aborted))
- {
- // Retry accept operation.
- continue;
- }
- else
- {
- return ec;
- }
- }
-
- if (peer_endpoint)
- peer_endpoint->resize(addr_len);
-
- peer.assign(impl.protocol_, new_socket.get(), ec);
- if (!ec)
- new_socket.release();
- return ec;
- }
- }
-
- template <typename Socket, typename Handler>
- class accept_operation
- : public operation
- {
- public:
- accept_operation(win_iocp_io_service& io_service,
- socket_type socket, socket_type new_socket, Socket& peer,
- const protocol_type& protocol, endpoint_type* peer_endpoint,
- bool enable_connection_aborted, Handler handler)
- : operation(io_service,
- &accept_operation<Socket, Handler>::do_completion_impl,
- &accept_operation<Socket, Handler>::destroy_impl),
- io_service_(io_service),
- socket_(socket),
- new_socket_(new_socket),
- peer_(peer),
- protocol_(protocol),
- peer_endpoint_(peer_endpoint),
- work_(io_service.get_io_service()),
- enable_connection_aborted_(enable_connection_aborted),
- handler_(handler)
- {
- }
-
- socket_type new_socket()
- {
- return new_socket_.get();
- }
-
- void* output_buffer()
- {
- return output_buffer_;
- }
-
- DWORD address_length()
- {
- return sizeof(sockaddr_storage_type) + 16;
- }
-
- private:
- static void do_completion_impl(operation* op, DWORD last_error, size_t)
- {
- // Take ownership of the operation object.
- typedef accept_operation<Socket, Handler> op_type;
- op_type* handler_op(static_cast<op_type*>(op));
- typedef handler_alloc_traits<Handler, op_type> alloc_traits;
- handler_ptr<alloc_traits> ptr(handler_op->handler_, handler_op);
-
- // Map Windows error ERROR_NETNAME_DELETED to connection_aborted.
- if (last_error == ERROR_NETNAME_DELETED)
- {
- last_error = WSAECONNABORTED;
- }
-
- // Restart the accept operation if we got the connection_aborted error
- // and the enable_connection_aborted socket option is not set.
- if (last_error == WSAECONNABORTED
- && !ptr.get()->enable_connection_aborted_)
- {
- // Reset OVERLAPPED structure.
- ptr.get()->Internal = 0;
- ptr.get()->InternalHigh = 0;
- ptr.get()->Offset = 0;
- ptr.get()->OffsetHigh = 0;
- ptr.get()->hEvent = 0;
-
- // Create a new socket for the next connection, since the AcceptEx call
- // fails with WSAEINVAL if we try to reuse the same socket.
- boost::system::error_code ec;
- ptr.get()->new_socket_.reset();
- ptr.get()->new_socket_.reset(socket_ops::socket(
- ptr.get()->protocol_.family(), ptr.get()->protocol_.type(),
- ptr.get()->protocol_.protocol(), ec));
- if (ptr.get()->new_socket() != invalid_socket)
- {
- // Accept a connection.
- DWORD bytes_read = 0;
- BOOL result = ::AcceptEx(ptr.get()->socket_, ptr.get()->new_socket(),
- ptr.get()->output_buffer(), 0, ptr.get()->address_length(),
- ptr.get()->address_length(), &bytes_read, ptr.get());
- last_error = ::WSAGetLastError();
-
- // Check if the operation completed immediately.
- if (!result && last_error != WSA_IO_PENDING)
- {
- if (last_error == ERROR_NETNAME_DELETED
- || last_error == WSAECONNABORTED)
- {
- // Post this handler so that operation will be restarted again.
- ptr.get()->io_service_.post_completion(ptr.get(), last_error, 0);
- ptr.release();
- return;
- }
- else
- {
- // Operation already complete. Continue with rest of this handler.
- }
- }
- else
- {
- // Asynchronous operation has been successfully restarted.
- ptr.release();
- return;
- }
- }
- }
-
- // Get the address of the peer.
- endpoint_type peer_endpoint;
- if (last_error == 0)
- {
- LPSOCKADDR local_addr = 0;
- int local_addr_length = 0;
- LPSOCKADDR remote_addr = 0;
- int remote_addr_length = 0;
- GetAcceptExSockaddrs(handler_op->output_buffer(), 0,
- handler_op->address_length(), handler_op->address_length(),
- &local_addr, &local_addr_length, &remote_addr, &remote_addr_length);
- if (static_cast<std::size_t>(remote_addr_length)
- > peer_endpoint.capacity())
- {
- last_error = WSAEINVAL;
- }
- else
- {
- using namespace std; // For memcpy.
- memcpy(peer_endpoint.data(), remote_addr, remote_addr_length);
- peer_endpoint.resize(static_cast<std::size_t>(remote_addr_length));
- }
- }
-
- // Need to set the SO_UPDATE_ACCEPT_CONTEXT option so that getsockname
- // and getpeername will work on the accepted socket.
- if (last_error == 0)
- {
- SOCKET update_ctx_param = handler_op->socket_;
- boost::system::error_code ec;
- if (socket_ops::setsockopt(handler_op->new_socket_.get(),
- SOL_SOCKET, SO_UPDATE_ACCEPT_CONTEXT,
- &update_ctx_param, sizeof(SOCKET), ec) != 0)
- {
- last_error = ec.value();
- }
- }
-
- // If the socket was successfully accepted, transfer ownership of the
- // socket to the peer object.
- if (last_error == 0)
- {
- boost::system::error_code ec;
- handler_op->peer_.assign(handler_op->protocol_,
- native_type(handler_op->new_socket_.get(), peer_endpoint), ec);
- if (ec)
- last_error = ec.value();
- else
- handler_op->new_socket_.release();
- }
-
- // Pass endpoint back to caller.
- if (handler_op->peer_endpoint_)
- *handler_op->peer_endpoint_ = peer_endpoint;
-
- // Make a copy of the handler so that the memory can be deallocated before
- // the upcall is made.
- Handler handler(handler_op->handler_);
-
- // Free the memory associated with the handler.
- ptr.reset();
-
- // Call the handler.
- boost::system::error_code ec(last_error,
- boost::asio::error::get_system_category());
- boost_asio_handler_invoke_helpers::invoke(
- detail::bind_handler(handler, ec), &handler);
- }
-
- static void destroy_impl(operation* op)
- {
- // Take ownership of the operation object.
- typedef accept_operation<Socket, Handler> op_type;
- op_type* handler_op(static_cast<op_type*>(op));
- typedef handler_alloc_traits<Handler, op_type> alloc_traits;
- handler_ptr<alloc_traits> ptr(handler_op->handler_, handler_op);
-
- // 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.
- Handler handler(handler_op->handler_);
- (void)handler;
-
- // Free the memory associated with the handler.
- ptr.reset();
- }
-
- win_iocp_io_service& io_service_;
- socket_type socket_;
- socket_holder new_socket_;
- Socket& peer_;
- protocol_type protocol_;
- endpoint_type* peer_endpoint_;
- boost::asio::io_service::work work_;
- unsigned char output_buffer_[(sizeof(sockaddr_storage_type) + 16) * 2];
- bool enable_connection_aborted_;
- Handler handler_;
- };
-
- // Start an asynchronous accept. The peer and peer_endpoint objects
- // must be valid until the accept's handler is invoked.
- template <typename Socket, typename Handler>
- void async_accept(implementation_type& impl, Socket& peer,
- endpoint_type* peer_endpoint, Handler handler)
- {
- // Check whether acceptor has been initialised.
- if (!is_open(impl))
- {
- this->get_io_service().post(bind_handler(handler,
- boost::asio::error::bad_descriptor));
- return;
- }
-
- // Check that peer socket has not already been opened.
- if (peer.is_open())
- {
- this->get_io_service().post(bind_handler(handler,
- boost::asio::error::already_open));
- return;
- }
-
-#if defined(BOOST_ASIO_ENABLE_CANCELIO)
- // Update the ID of the thread from which cancellation is safe.
- if (impl.safe_cancellation_thread_id_ == 0)
- impl.safe_cancellation_thread_id_ = ::GetCurrentThreadId();
- else if (impl.safe_cancellation_thread_id_ != ::GetCurrentThreadId())
- impl.safe_cancellation_thread_id_ = ~DWORD(0);
-#endif // defined(BOOST_ASIO_ENABLE_CANCELIO)
-
- // Create a new socket for the connection.
- boost::system::error_code ec;
- socket_holder sock(socket_ops::socket(impl.protocol_.family(),
- impl.protocol_.type(), impl.protocol_.protocol(), ec));
- if (sock.get() == invalid_socket)
- {
- this->get_io_service().post(bind_handler(handler, ec));
- return;
- }
-
- // Allocate and construct an operation to wrap the handler.
- typedef accept_operation<Socket, Handler> value_type;
- typedef handler_alloc_traits<Handler, value_type> alloc_traits;
- raw_handler_ptr<alloc_traits> raw_ptr(handler);
- socket_type new_socket = sock.get();
- bool enable_connection_aborted =
- (impl.flags_ & implementation_type::enable_connection_aborted);
- handler_ptr<alloc_traits> ptr(raw_ptr,
- iocp_service_, impl.socket_, new_socket, peer, impl.protocol_,
- peer_endpoint, enable_connection_aborted, handler);
- sock.release();
-
- // Accept a connection.
- DWORD bytes_read = 0;
- BOOL result = ::AcceptEx(impl.socket_, ptr.get()->new_socket(),
- ptr.get()->output_buffer(), 0, ptr.get()->address_length(),
- ptr.get()->address_length(), &bytes_read, ptr.get());
- DWORD last_error = ::WSAGetLastError();
-
- // Check if the operation completed immediately.
- if (!result && last_error != WSA_IO_PENDING)
- {
- if (!enable_connection_aborted
- && (last_error == ERROR_NETNAME_DELETED
- || last_error == WSAECONNABORTED))
- {
- // Post handler so that operation will be restarted again. We do not
- // perform the AcceptEx again here to avoid the possibility of starving
- // other handlers.
- iocp_service_.post_completion(ptr.get(), last_error, 0);
- ptr.release();
- }
- else
- {
- boost::asio::io_service::work work(this->get_io_service());
- ptr.reset();
- boost::system::error_code ec(last_error,
- boost::asio::error::get_system_category());
- iocp_service_.post(bind_handler(handler, ec));
- }
- }
- else
- {
- ptr.release();
- }
- }
-
- // Connect the socket to the specified endpoint.
- boost::system::error_code connect(implementation_type& impl,
- const endpoint_type& peer_endpoint, boost::system::error_code& ec)
- {
- if (!is_open(impl))
- {
- ec = boost::asio::error::bad_descriptor;
- return ec;
- }
-
- // Perform the connect operation.
- socket_ops::connect(impl.socket_,
- peer_endpoint.data(), peer_endpoint.size(), ec);
- return ec;
- }
-
- template <typename Handler>
- class connect_operation
- {
- public:
- connect_operation(socket_type socket, bool user_set_non_blocking,
- boost::asio::io_service& io_service, Handler handler)
- : socket_(socket),
- user_set_non_blocking_(user_set_non_blocking),
- io_service_(io_service),
- work_(io_service),
- handler_(handler)
- {
- }
-
- bool perform(boost::system::error_code& ec,
- std::size_t& bytes_transferred)
- {
- bytes_transferred = 0;
-
- // Check whether the operation was successful.
- if (ec)
- return true;
-
- // Get the error code from the connect operation.
- int connect_error = 0;
- size_t connect_error_len = sizeof(connect_error);
- if (socket_ops::getsockopt(socket_, SOL_SOCKET, SO_ERROR,
- &connect_error, &connect_error_len, ec) == socket_error_retval)
- return true;
-
- // If connection failed then post the handler with the error code.
- if (connect_error)
- {
- ec = boost::system::error_code(connect_error,
- boost::asio::error::get_system_category());
- return true;
- }
-
- // Revert socket to blocking mode unless the user requested otherwise.
- if (!user_set_non_blocking_)
- {
- ioctl_arg_type non_blocking = 0;
- if (socket_ops::ioctl(socket_, FIONBIO, &non_blocking, ec))
- return true;
- }
-
- // Post the result of the successful connection operation.
- ec = boost::system::error_code();
- return true;
- }
-
- void complete(const boost::system::error_code& ec, std::size_t)
- {
- io_service_.post(bind_handler(handler_, ec));
- }
-
- private:
- socket_type socket_;
- bool user_set_non_blocking_;
- boost::asio::io_service& io_service_;
- boost::asio::io_service::work work_;
- Handler handler_;
- };
-
- // Start an asynchronous connect.
- template <typename Handler>
- void async_connect(implementation_type& impl,
- const endpoint_type& peer_endpoint, Handler handler)
- {
- if (!is_open(impl))
- {
- this->get_io_service().post(bind_handler(handler,
- boost::asio::error::bad_descriptor));
- return;
- }
-
-#if defined(BOOST_ASIO_ENABLE_CANCELIO)
- // Update the ID of the thread from which cancellation is safe.
- if (impl.safe_cancellation_thread_id_ == 0)
- impl.safe_cancellation_thread_id_ = ::GetCurrentThreadId();
- else if (impl.safe_cancellation_thread_id_ != ::GetCurrentThreadId())
- impl.safe_cancellation_thread_id_ = ~DWORD(0);
-#endif // defined(BOOST_ASIO_ENABLE_CANCELIO)
-
- // Check if the reactor was already obtained from the io_service.
- reactor_type* reactor = static_cast<reactor_type*>(
- interlocked_compare_exchange_pointer(
- reinterpret_cast<void**>(&reactor_), 0, 0));
- if (!reactor)
- {
- reactor = &(boost::asio::use_service<reactor_type>(
- this->get_io_service()));
- interlocked_exchange_pointer(
- reinterpret_cast<void**>(&reactor_), reactor);
- }
-
- // Mark the socket as non-blocking so that the connection will take place
- // asynchronously.
- ioctl_arg_type non_blocking = 1;
- boost::system::error_code ec;
- if (socket_ops::ioctl(impl.socket_, FIONBIO, &non_blocking, ec))
- {
- this->get_io_service().post(bind_handler(handler, ec));
- return;
- }
-
- // Start the connect operation.
- if (socket_ops::connect(impl.socket_, peer_endpoint.data(),
- peer_endpoint.size(), ec) == 0)
- {
- // Revert socket to blocking mode unless the user requested otherwise.
- if (!(impl.flags_ & implementation_type::user_set_non_blocking))
- {
- non_blocking = 0;
- socket_ops::ioctl(impl.socket_, FIONBIO, &non_blocking, ec);
- }
-
- // The connect operation has finished successfully so we need to post the
- // handler immediately.
- this->get_io_service().post(bind_handler(handler, ec));
- }
- else if (ec == boost::asio::error::in_progress
- || ec == boost::asio::error::would_block)
- {
- // The connection is happening in the background, and we need to wait
- // until the socket becomes writeable.
- boost::shared_ptr<bool> completed(new bool(false));
- reactor->start_connect_op(impl.socket_, impl.reactor_data_,
- connect_operation<Handler>(
- impl.socket_,
- (impl.flags_ & implementation_type::user_set_non_blocking) != 0,
- this->get_io_service(), handler));
- }
- else
- {
- // Revert socket to blocking mode unless the user requested otherwise.
- if (!(impl.flags_ & implementation_type::user_set_non_blocking))
- {
- non_blocking = 0;
- boost::system::error_code ignored_ec;
- socket_ops::ioctl(impl.socket_, FIONBIO, &non_blocking, ignored_ec);
- }
-
- // The connect operation has failed, so post the handler immediately.
- this->get_io_service().post(bind_handler(handler, ec));
- }
- }
-
-private:
- // Helper function to close a socket when the associated object is being
- // destroyed.
- void close_for_destruction(implementation_type& impl)
- {
- if (is_open(impl))
- {
- // Check if the reactor was created, in which case we need to close the
- // socket on the reactor as well to cancel any operations that might be
- // running there.
- reactor_type* reactor = static_cast<reactor_type*>(
- interlocked_compare_exchange_pointer(
- reinterpret_cast<void**>(&reactor_), 0, 0));
- if (reactor)
- reactor->close_descriptor(impl.socket_, impl.reactor_data_);
-
- // The socket destructor must not block. If the user has changed the
- // linger option to block in the foreground, we will change it back to the
- // default so that the closure is performed in the background.
- if (impl.flags_ & implementation_type::close_might_block)
- {
- ::linger opt;
- opt.l_onoff = 0;
- opt.l_linger = 0;
- boost::system::error_code ignored_ec;
- socket_ops::setsockopt(impl.socket_,
- SOL_SOCKET, SO_LINGER, &opt, sizeof(opt), ignored_ec);
- }
-
- boost::system::error_code ignored_ec;
- socket_ops::close(impl.socket_, ignored_ec);
- impl.socket_ = invalid_socket;
- impl.flags_ = 0;
- impl.cancel_token_.reset();
-#if defined(BOOST_ASIO_ENABLE_CANCELIO)
- impl.safe_cancellation_thread_id_ = 0;
-#endif // defined(BOOST_ASIO_ENABLE_CANCELIO)
- }
- }
-
- // Helper function to emulate InterlockedCompareExchangePointer functionality
- // for:
- // - very old Platform SDKs; and
- // - platform SDKs where MSVC's /Wp64 option causes spurious warnings.
- void* interlocked_compare_exchange_pointer(void** dest, void* exch, void* cmp)
- {
-#if defined(_M_IX86)
- return reinterpret_cast<void*>(InterlockedCompareExchange(
- reinterpret_cast<PLONG>(dest), reinterpret_cast<LONG>(exch),
- reinterpret_cast<LONG>(cmp)));
-#else
- return InterlockedCompareExchangePointer(dest, exch, cmp);
-#endif
- }
-
- // Helper function to emulate InterlockedExchangePointer functionality for:
- // - very old Platform SDKs; and
- // - platform SDKs where MSVC's /Wp64 option causes spurious warnings.
- void* interlocked_exchange_pointer(void** dest, void* val)
- {
-#if defined(_M_IX86)
- return reinterpret_cast<void*>(InterlockedExchange(
- reinterpret_cast<PLONG>(dest), reinterpret_cast<LONG>(val)));
-#else
- return InterlockedExchangePointer(dest, val);
-#endif
- }
-
- // The IOCP service used for running asynchronous operations and dispatching
- // handlers.
- win_iocp_io_service& iocp_service_;
-
- // The reactor used for performing connect operations. This object is created
- // only if needed.
- reactor_type* reactor_;
-
- // Mutex to protect access to the linked list of implementations.
- boost::asio::detail::mutex mutex_;
-
- // The head of a linked list of all implementations.
- implementation_type* impl_list_;
-};
-
-} // namespace detail
-} // namespace asio
-} // namespace boost
-
-#endif // defined(BOOST_ASIO_HAS_IOCP)
-
-#include <boost/asio/detail/pop_options.hpp>
-
-#endif // BOOST_ASIO_DETAIL_WIN_IOCP_SOCKET_SERVICE_HPP