Pull in files from odr-mmbtools-common

Replace ASIO by simpler implementation, meaning that the telnet
RC now only supports a single connection.

Move Log, RC to lib/

50 files changed, 0 insertions, 15058 deletions

diff --git a/lib/asio/detail/impl/buffer_sequence_adapter.ipp b/lib/asio/detail/impl/buffer_sequence_adapter.ipp
deleted file mode 100644
index 323c8ad..0000000
--- a/lib/asio/detail/impl/buffer_sequence_adapter.ipp
+++ /dev/null
@@ -1,118 +0,0 @@
-//
-// detail/impl/buffer_sequence_adapter.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_BUFFER_SEQUENCE_ADAPTER_IPP
-#define ASIO_DETAIL_IMPL_BUFFER_SEQUENCE_ADAPTER_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_WINDOWS_RUNTIME)
-
-#include <robuffer.h>
-#include <windows.storage.streams.h>
-#include <wrl/implements.h>
-#include "asio/detail/buffer_sequence_adapter.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-class winrt_buffer_impl :
-  public Microsoft::WRL::RuntimeClass<
-    Microsoft::WRL::RuntimeClassFlags<
-      Microsoft::WRL::RuntimeClassType::WinRtClassicComMix>,
-    ABI::Windows::Storage::Streams::IBuffer,
-    Windows::Storage::Streams::IBufferByteAccess>
-{
-public:
-  explicit winrt_buffer_impl(const asio::const_buffer& b)
-  {
-    bytes_ = const_cast<byte*>(static_cast<const byte*>(b.data()));
-    length_ = b.size();
-    capacity_ = b.size();
-  }
-
-  explicit winrt_buffer_impl(const asio::mutable_buffer& b)
-  {
-    bytes_ = static_cast<byte*>(b.data());
-    length_ = 0;
-    capacity_ = b.size();
-  }
-
-  ~winrt_buffer_impl()
-  {
-  }
-
-  STDMETHODIMP Buffer(byte** value)
-  {
-    *value = bytes_;
-    return S_OK;
-  }
-
-  STDMETHODIMP get_Capacity(UINT32* value)
-  {
-    *value = capacity_;
-    return S_OK;
-  }
-
-  STDMETHODIMP get_Length(UINT32 *value)
-  {
-    *value = length_;
-    return S_OK;
-  }
-
-  STDMETHODIMP put_Length(UINT32 value)
-  {
-    if (value > capacity_)
-      return E_INVALIDARG;
-    length_ = value;
-    return S_OK;
-  }
-
-private:
-  byte* bytes_;
-  UINT32 length_;
-  UINT32 capacity_;
-};
-
-void buffer_sequence_adapter_base::init_native_buffer(
-    buffer_sequence_adapter_base::native_buffer_type& buf,
-    const asio::mutable_buffer& buffer)
-{
-  std::memset(&buf, 0, sizeof(native_buffer_type));
-  Microsoft::WRL::ComPtr<IInspectable> insp
-    = Microsoft::WRL::Make<winrt_buffer_impl>(buffer);
-  buf = reinterpret_cast<Windows::Storage::Streams::IBuffer^>(insp.Get());
-}
-
-void buffer_sequence_adapter_base::init_native_buffer(
-    buffer_sequence_adapter_base::native_buffer_type& buf,
-    const asio::const_buffer& buffer)
-{
-  std::memset(&buf, 0, sizeof(native_buffer_type));
-  Microsoft::WRL::ComPtr<IInspectable> insp
-    = Microsoft::WRL::Make<winrt_buffer_impl>(buffer);
-  Platform::Object^ buf_obj = reinterpret_cast<Platform::Object^>(insp.Get());
-  buf = reinterpret_cast<Windows::Storage::Streams::IBuffer^>(insp.Get());
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_WINDOWS_RUNTIME)
-
-#endif // ASIO_DETAIL_IMPL_BUFFER_SEQUENCE_ADAPTER_IPP
diff --git a/lib/asio/detail/impl/descriptor_ops.ipp b/lib/asio/detail/impl/descriptor_ops.ipp
deleted file mode 100644
index 1af643f..0000000
--- a/lib/asio/detail/impl/descriptor_ops.ipp
+++ /dev/null
@@ -1,474 +0,0 @@
-//
-// detail/impl/descriptor_ops.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_DESCRIPTOR_OPS_IPP
-#define ASIO_DETAIL_IMPL_DESCRIPTOR_OPS_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include <cerrno>
-#include "asio/detail/descriptor_ops.hpp"
-#include "asio/error.hpp"
-
-#if !defined(ASIO_WINDOWS) \
-  && !defined(ASIO_WINDOWS_RUNTIME) \
-  && !defined(__CYGWIN__)
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-namespace descriptor_ops {
-
-int open(const char* path, int flags, asio::error_code& ec)
-{
-  errno = 0;
-  int result = error_wrapper(::open(path, flags), ec);
-  if (result >= 0)
-    ec = asio::error_code();
-  return result;
-}
-
-int close(int d, state_type& state, asio::error_code& ec)
-{
-  int result = 0;
-  if (d != -1)
-  {
-    errno = 0;
-    result = error_wrapper(::close(d), ec);
-
-    if (result != 0
-        && (ec == asio::error::would_block
-          || ec == asio::error::try_again))
-    {
-      // According to UNIX Network Programming Vol. 1, it is possible for
-      // close() to fail with EWOULDBLOCK under certain circumstances. What
-      // isn't clear is the state of the descriptor after this error. The one
-      // current OS where this behaviour is seen, Windows, says that the socket
-      // remains open. Therefore we'll put the descriptor back into blocking
-      // mode and have another attempt at closing it.
-#if defined(__SYMBIAN32__)
-      int flags = ::fcntl(d, F_GETFL, 0);
-      if (flags >= 0)
-        ::fcntl(d, F_SETFL, flags & ~O_NONBLOCK);
-#else // defined(__SYMBIAN32__)
-      ioctl_arg_type arg = 0;
-      ::ioctl(d, FIONBIO, &arg);
-#endif // defined(__SYMBIAN32__)
-      state &= ~non_blocking;
-
-      errno = 0;
-      result = error_wrapper(::close(d), ec);
-    }
-  }
-
-  if (result == 0)
-    ec = asio::error_code();
-  return result;
-}
-
-bool set_user_non_blocking(int d, state_type& state,
-    bool value, asio::error_code& ec)
-{
-  if (d == -1)
-  {
-    ec = asio::error::bad_descriptor;
-    return false;
-  }
-
-  errno = 0;
-#if defined(__SYMBIAN32__)
-  int result = error_wrapper(::fcntl(d, F_GETFL, 0), ec);
-  if (result >= 0)
-  {
-    errno = 0;
-    int flag = (value ? (result | O_NONBLOCK) : (result & ~O_NONBLOCK));
-    result = error_wrapper(::fcntl(d, F_SETFL, flag), ec);
-  }
-#else // defined(__SYMBIAN32__)
-  ioctl_arg_type arg = (value ? 1 : 0);
-  int result = error_wrapper(::ioctl(d, FIONBIO, &arg), ec);
-#endif // defined(__SYMBIAN32__)
-
-  if (result >= 0)
-  {
-    ec = asio::error_code();
-    if (value)
-      state |= user_set_non_blocking;
-    else
-    {
-      // Clearing the user-set non-blocking mode always overrides any
-      // internally-set non-blocking flag. Any subsequent asynchronous
-      // operations will need to re-enable non-blocking I/O.
-      state &= ~(user_set_non_blocking | internal_non_blocking);
-    }
-    return true;
-  }
-
-  return false;
-}
-
-bool set_internal_non_blocking(int d, state_type& state,
-    bool value, asio::error_code& ec)
-{
-  if (d == -1)
-  {
-    ec = asio::error::bad_descriptor;
-    return false;
-  }
-
-  if (!value && (state & user_set_non_blocking))
-  {
-    // It does not make sense to clear the internal non-blocking flag if the
-    // user still wants non-blocking behaviour. Return an error and let the
-    // caller figure out whether to update the user-set non-blocking flag.
-    ec = asio::error::invalid_argument;
-    return false;
-  }
-
-  errno = 0;
-#if defined(__SYMBIAN32__)
-  int result = error_wrapper(::fcntl(d, F_GETFL, 0), ec);
-  if (result >= 0)
-  {
-    errno = 0;
-    int flag = (value ? (result | O_NONBLOCK) : (result & ~O_NONBLOCK));
-    result = error_wrapper(::fcntl(d, F_SETFL, flag), ec);
-  }
-#else // defined(__SYMBIAN32__)
-  ioctl_arg_type arg = (value ? 1 : 0);
-  int result = error_wrapper(::ioctl(d, FIONBIO, &arg), ec);
-#endif // defined(__SYMBIAN32__)
-
-  if (result >= 0)
-  {
-    ec = asio::error_code();
-    if (value)
-      state |= internal_non_blocking;
-    else
-      state &= ~internal_non_blocking;
-    return true;
-  }
-
-  return false;
-}
-
-std::size_t sync_read(int d, state_type state, buf* bufs,
-    std::size_t count, bool all_empty, asio::error_code& ec)
-{
-  if (d == -1)
-  {
-    ec = asio::error::bad_descriptor;
-    return 0;
-  }
-
-  // A request to read 0 bytes on a stream is a no-op.
-  if (all_empty)
-  {
-    ec = asio::error_code();
-    return 0;
-  }
-
-  // Read some data.
-  for (;;)
-  {
-    // Try to complete the operation without blocking.
-    errno = 0;
-    signed_size_type bytes = error_wrapper(::readv(
-          d, bufs, static_cast<int>(count)), ec);
-
-    // Check if operation succeeded.
-    if (bytes > 0)
-      return bytes;
-
-    // Check for EOF.
-    if (bytes == 0)
-    {
-      ec = asio::error::eof;
-      return 0;
-    }
-
-    // Operation failed.
-    if ((state & user_set_non_blocking)
-        || (ec != asio::error::would_block
-          && ec != asio::error::try_again))
-      return 0;
-
-    // Wait for descriptor to become ready.
-    if (descriptor_ops::poll_read(d, 0, ec) < 0)
-      return 0;
-  }
-}
-
-bool non_blocking_read(int d, buf* bufs, std::size_t count,
-    asio::error_code& ec, std::size_t& bytes_transferred)
-{
-  for (;;)
-  {
-    // Read some data.
-    errno = 0;
-    signed_size_type bytes = error_wrapper(::readv(
-          d, bufs, static_cast<int>(count)), ec);
-
-    // Check for end of stream.
-    if (bytes == 0)
-    {
-      ec = asio::error::eof;
-      return true;
-    }
-
-    // Retry operation if interrupted by signal.
-    if (ec == asio::error::interrupted)
-      continue;
-
-    // Check if we need to run the operation again.
-    if (ec == asio::error::would_block
-        || ec == asio::error::try_again)
-      return false;
-
-    // Operation is complete.
-    if (bytes > 0)
-    {
-      ec = asio::error_code();
-      bytes_transferred = bytes;
-    }
-    else
-      bytes_transferred = 0;
-
-    return true;
-  }
-}
-
-std::size_t sync_write(int d, state_type state, const buf* bufs,
-    std::size_t count, bool all_empty, asio::error_code& ec)
-{
-  if (d == -1)
-  {
-    ec = asio::error::bad_descriptor;
-    return 0;
-  }
-
-  // A request to write 0 bytes on a stream is a no-op.
-  if (all_empty)
-  {
-    ec = asio::error_code();
-    return 0;
-  }
-
-  // Write some data.
-  for (;;)
-  {
-    // Try to complete the operation without blocking.
-    errno = 0;
-    signed_size_type bytes = error_wrapper(::writev(
-          d, bufs, static_cast<int>(count)), ec);
-
-    // Check if operation succeeded.
-    if (bytes > 0)
-      return bytes;
-
-    // Operation failed.
-    if ((state & user_set_non_blocking)
-        || (ec != asio::error::would_block
-          && ec != asio::error::try_again))
-      return 0;
-
-    // Wait for descriptor to become ready.
-    if (descriptor_ops::poll_write(d, 0, ec) < 0)
-      return 0;
-  }
-}
-
-bool non_blocking_write(int d, const buf* bufs, std::size_t count,
-    asio::error_code& ec, std::size_t& bytes_transferred)
-{
-  for (;;)
-  {
-    // Write some data.
-    errno = 0;
-    signed_size_type bytes = error_wrapper(::writev(
-          d, bufs, static_cast<int>(count)), ec);
-
-    // Retry operation if interrupted by signal.
-    if (ec == asio::error::interrupted)
-      continue;
-
-    // Check if we need to run the operation again.
-    if (ec == asio::error::would_block
-        || ec == asio::error::try_again)
-      return false;
-
-    // Operation is complete.
-    if (bytes >= 0)
-    {
-      ec = asio::error_code();
-      bytes_transferred = bytes;
-    }
-    else
-      bytes_transferred = 0;
-
-    return true;
-  }
-}
-
-int ioctl(int d, state_type& state, long cmd,
-    ioctl_arg_type* arg, asio::error_code& ec)
-{
-  if (d == -1)
-  {
-    ec = asio::error::bad_descriptor;
-    return -1;
-  }
-
-  errno = 0;
-  int result = error_wrapper(::ioctl(d, cmd, arg), ec);
-
-  if (result >= 0)
-  {
-    ec = asio::error_code();
-
-    // When updating the non-blocking mode we always perform the ioctl syscall,
-    // even if the flags would otherwise indicate that the descriptor is
-    // already in the correct state. This ensures that the underlying
-    // descriptor is put into the state that has been requested by the user. If
-    // the ioctl syscall was successful then we need to update the flags to
-    // match.
-    if (cmd == static_cast<long>(FIONBIO))
-    {
-      if (*arg)
-      {
-        state |= user_set_non_blocking;
-      }
-      else
-      {
-        // Clearing the non-blocking mode always overrides any internally-set
-        // non-blocking flag. Any subsequent asynchronous operations will need
-        // to re-enable non-blocking I/O.
-        state &= ~(user_set_non_blocking | internal_non_blocking);
-      }
-    }
-  }
-
-  return result;
-}
-
-int fcntl(int d, int cmd, asio::error_code& ec)
-{
-  if (d == -1)
-  {
-    ec = asio::error::bad_descriptor;
-    return -1;
-  }
-
-  errno = 0;
-  int result = error_wrapper(::fcntl(d, cmd), ec);
-  if (result != -1)
-    ec = asio::error_code();
-  return result;
-}
-
-int fcntl(int d, int cmd, long arg, asio::error_code& ec)
-{
-  if (d == -1)
-  {
-    ec = asio::error::bad_descriptor;
-    return -1;
-  }
-
-  errno = 0;
-  int result = error_wrapper(::fcntl(d, cmd, arg), ec);
-  if (result != -1)
-    ec = asio::error_code();
-  return result;
-}
-
-int poll_read(int d, state_type state, asio::error_code& ec)
-{
-  if (d == -1)
-  {
-    ec = asio::error::bad_descriptor;
-    return -1;
-  }
-
-  pollfd fds;
-  fds.fd = d;
-  fds.events = POLLIN;
-  fds.revents = 0;
-  int timeout = (state & user_set_non_blocking) ? 0 : -1;
-  errno = 0;
-  int result = error_wrapper(::poll(&fds, 1, timeout), ec);
-  if (result == 0)
-    ec = (state & user_set_non_blocking)
-      ? asio::error::would_block : asio::error_code();
-  else if (result > 0)
-    ec = asio::error_code();
-  return result;
-}
-
-int poll_write(int d, state_type state, asio::error_code& ec)
-{
-  if (d == -1)
-  {
-    ec = asio::error::bad_descriptor;
-    return -1;
-  }
-
-  pollfd fds;
-  fds.fd = d;
-  fds.events = POLLOUT;
-  fds.revents = 0;
-  int timeout = (state & user_set_non_blocking) ? 0 : -1;
-  errno = 0;
-  int result = error_wrapper(::poll(&fds, 1, timeout), ec);
-  if (result == 0)
-    ec = (state & user_set_non_blocking)
-      ? asio::error::would_block : asio::error_code();
-  else if (result > 0)
-    ec = asio::error_code();
-  return result;
-}
-
-int poll_error(int d, state_type state, asio::error_code& ec)
-{
-  if (d == -1)
-  {
-    ec = asio::error::bad_descriptor;
-    return -1;
-  }
-
-  pollfd fds;
-  fds.fd = d;
-  fds.events = POLLPRI | POLLERR | POLLHUP;
-  fds.revents = 0;
-  int timeout = (state & user_set_non_blocking) ? 0 : -1;
-  errno = 0;
-  int result = error_wrapper(::poll(&fds, 1, timeout), ec);
-  if (result == 0)
-    ec = (state & user_set_non_blocking)
-      ? asio::error::would_block : asio::error_code();
-  else if (result > 0)
-    ec = asio::error_code();
-  return result;
-}
-
-} // namespace descriptor_ops
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // !defined(ASIO_WINDOWS)
-       //   && !defined(ASIO_WINDOWS_RUNTIME)
-       //   && !defined(__CYGWIN__)
-
-#endif // ASIO_DETAIL_IMPL_DESCRIPTOR_OPS_IPP
diff --git a/lib/asio/detail/impl/dev_poll_reactor.hpp b/lib/asio/detail/impl/dev_poll_reactor.hpp
deleted file mode 100644
index 4cd8aaf..0000000
--- a/lib/asio/detail/impl/dev_poll_reactor.hpp
+++ /dev/null
@@ -1,91 +0,0 @@
-//
-// detail/impl/dev_poll_reactor.hpp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_DEV_POLL_REACTOR_HPP
-#define ASIO_DETAIL_IMPL_DEV_POLL_REACTOR_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_HAS_DEV_POLL)
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-template <typename Time_Traits>
-void dev_poll_reactor::add_timer_queue(timer_queue<Time_Traits>& queue)
-{
-  do_add_timer_queue(queue);
-}
-
-template <typename Time_Traits>
-void dev_poll_reactor::remove_timer_queue(timer_queue<Time_Traits>& queue)
-{
-  do_remove_timer_queue(queue);
-}
-
-template <typename Time_Traits>
-void dev_poll_reactor::schedule_timer(timer_queue<Time_Traits>& queue,
-    const typename Time_Traits::time_type& time,
-    typename timer_queue<Time_Traits>::per_timer_data& timer, wait_op* op)
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-
-  if (shutdown_)
-  {
-    scheduler_.post_immediate_completion(op, false);
-    return;
-  }
-
-  bool earliest = queue.enqueue_timer(time, timer, op);
-  scheduler_.work_started();
-  if (earliest)
-    interrupter_.interrupt();
-}
-
-template <typename Time_Traits>
-std::size_t dev_poll_reactor::cancel_timer(timer_queue<Time_Traits>& queue,
-    typename timer_queue<Time_Traits>::per_timer_data& timer,
-    std::size_t max_cancelled)
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-  op_queue<operation> ops;
-  std::size_t n = queue.cancel_timer(timer, ops, max_cancelled);
-  lock.unlock();
-  scheduler_.post_deferred_completions(ops);
-  return n;
-}
-
-template <typename Time_Traits>
-void dev_poll_reactor::move_timer(timer_queue<Time_Traits>& queue,
-    typename timer_queue<Time_Traits>::per_timer_data& target,
-    typename timer_queue<Time_Traits>::per_timer_data& source)
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-  op_queue<operation> ops;
-  queue.cancel_timer(target, ops);
-  queue.move_timer(target, source);
-  lock.unlock();
-  scheduler_.post_deferred_completions(ops);
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_HAS_DEV_POLL)
-
-#endif // ASIO_DETAIL_IMPL_DEV_POLL_REACTOR_HPP
diff --git a/lib/asio/detail/impl/dev_poll_reactor.ipp b/lib/asio/detail/impl/dev_poll_reactor.ipp
deleted file mode 100644
index 1ca376c..0000000
--- a/lib/asio/detail/impl/dev_poll_reactor.ipp
+++ /dev/null
@@ -1,446 +0,0 @@
-//
-// detail/impl/dev_poll_reactor.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_DEV_POLL_REACTOR_IPP
-#define ASIO_DETAIL_IMPL_DEV_POLL_REACTOR_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_HAS_DEV_POLL)
-
-#include "asio/detail/dev_poll_reactor.hpp"
-#include "asio/detail/assert.hpp"
-#include "asio/detail/throw_error.hpp"
-#include "asio/error.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-dev_poll_reactor::dev_poll_reactor(asio::execution_context& ctx)
-  : asio::detail::execution_context_service_base<dev_poll_reactor>(ctx),
-    scheduler_(use_service<scheduler>(ctx)),
-    mutex_(),
-    dev_poll_fd_(do_dev_poll_create()),
-    interrupter_(),
-    shutdown_(false)
-{
-  // Add the interrupter's descriptor to /dev/poll.
-  ::pollfd ev = { 0, 0, 0 };
-  ev.fd = interrupter_.read_descriptor();
-  ev.events = POLLIN | POLLERR;
-  ev.revents = 0;
-  ::write(dev_poll_fd_, &ev, sizeof(ev));
-}
-
-dev_poll_reactor::~dev_poll_reactor()
-{
-  shutdown();
-  ::close(dev_poll_fd_);
-}
-
-void dev_poll_reactor::shutdown()
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-  shutdown_ = true;
-  lock.unlock();
-
-  op_queue<operation> ops;
-
-  for (int i = 0; i < max_ops; ++i)
-    op_queue_[i].get_all_operations(ops);
-
-  timer_queues_.get_all_timers(ops);
-
-  scheduler_.abandon_operations(ops);
-} 
-
-void dev_poll_reactor::notify_fork(
-    asio::execution_context::fork_event fork_ev)
-{
-  if (fork_ev == asio::execution_context::fork_child)
-  {
-    detail::mutex::scoped_lock lock(mutex_);
-
-    if (dev_poll_fd_ != -1)
-      ::close(dev_poll_fd_);
-    dev_poll_fd_ = -1;
-    dev_poll_fd_ = do_dev_poll_create();
-
-    interrupter_.recreate();
-
-    // Add the interrupter's descriptor to /dev/poll.
-    ::pollfd ev = { 0, 0, 0 };
-    ev.fd = interrupter_.read_descriptor();
-    ev.events = POLLIN | POLLERR;
-    ev.revents = 0;
-    ::write(dev_poll_fd_, &ev, sizeof(ev));
-
-    // Re-register all descriptors with /dev/poll. The changes will be written
-    // to the /dev/poll descriptor the next time the reactor is run.
-    for (int i = 0; i < max_ops; ++i)
-    {
-      reactor_op_queue<socket_type>::iterator iter = op_queue_[i].begin();
-      reactor_op_queue<socket_type>::iterator end = op_queue_[i].end();
-      for (; iter != end; ++iter)
-      {
-        ::pollfd& pending_ev = add_pending_event_change(iter->first);
-        pending_ev.events |= POLLERR | POLLHUP;
-        switch (i)
-        {
-        case read_op: pending_ev.events |= POLLIN; break;
-        case write_op: pending_ev.events |= POLLOUT; break;
-        case except_op: pending_ev.events |= POLLPRI; break;
-        default: break;
-        }
-      }
-    }
-    interrupter_.interrupt();
-  }
-}
-
-void dev_poll_reactor::init_task()
-{
-  scheduler_.init_task();
-}
-
-int dev_poll_reactor::register_descriptor(socket_type, per_descriptor_data&)
-{
-  return 0;
-}
-
-int dev_poll_reactor::register_internal_descriptor(int op_type,
-    socket_type descriptor, per_descriptor_data&, reactor_op* op)
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-
-  op_queue_[op_type].enqueue_operation(descriptor, op);
-  ::pollfd& ev = add_pending_event_change(descriptor);
-  ev.events = POLLERR | POLLHUP;
-  switch (op_type)
-  {
-  case read_op: ev.events |= POLLIN; break;
-  case write_op: ev.events |= POLLOUT; break;
-  case except_op: ev.events |= POLLPRI; break;
-  default: break;
-  }
-  interrupter_.interrupt();
-
-  return 0;
-}
-
-void dev_poll_reactor::move_descriptor(socket_type,
-    dev_poll_reactor::per_descriptor_data&,
-    dev_poll_reactor::per_descriptor_data&)
-{
-}
-
-void dev_poll_reactor::start_op(int op_type, socket_type descriptor,
-    dev_poll_reactor::per_descriptor_data&, reactor_op* op,
-    bool is_continuation, bool allow_speculative)
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-
-  if (shutdown_)
-  {
-    post_immediate_completion(op, is_continuation);
-    return;
-  }
-
-  if (allow_speculative)
-  {
-    if (op_type != read_op || !op_queue_[except_op].has_operation(descriptor))
-    {
-      if (!op_queue_[op_type].has_operation(descriptor))
-      {
-        if (op->perform())
-        {
-          lock.unlock();
-          scheduler_.post_immediate_completion(op, is_continuation);
-          return;
-        }
-      }
-    }
-  }
-
-  bool first = op_queue_[op_type].enqueue_operation(descriptor, op);
-  scheduler_.work_started();
-  if (first)
-  {
-    ::pollfd& ev = add_pending_event_change(descriptor);
-    ev.events = POLLERR | POLLHUP;
-    if (op_type == read_op
-        || op_queue_[read_op].has_operation(descriptor))
-      ev.events |= POLLIN;
-    if (op_type == write_op
-        || op_queue_[write_op].has_operation(descriptor))
-      ev.events |= POLLOUT;
-    if (op_type == except_op
-        || op_queue_[except_op].has_operation(descriptor))
-      ev.events |= POLLPRI;
-    interrupter_.interrupt();
-  }
-}
-
-void dev_poll_reactor::cancel_ops(socket_type descriptor,
-    dev_poll_reactor::per_descriptor_data&)
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-  cancel_ops_unlocked(descriptor, asio::error::operation_aborted);
-}
-
-void dev_poll_reactor::deregister_descriptor(socket_type descriptor,
-    dev_poll_reactor::per_descriptor_data&, bool)
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-
-  // Remove the descriptor from /dev/poll.
-  ::pollfd& ev = add_pending_event_change(descriptor);
-  ev.events = POLLREMOVE;
-  interrupter_.interrupt();
-
-  // Cancel any outstanding operations associated with the descriptor.
-  cancel_ops_unlocked(descriptor, asio::error::operation_aborted);
-}
-
-void dev_poll_reactor::deregister_internal_descriptor(
-    socket_type descriptor, dev_poll_reactor::per_descriptor_data&)
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-
-  // Remove the descriptor from /dev/poll. Since this function is only called
-  // during a fork, we can apply the change immediately.
-  ::pollfd ev = { 0, 0, 0 };
-  ev.fd = descriptor;
-  ev.events = POLLREMOVE;
-  ev.revents = 0;
-  ::write(dev_poll_fd_, &ev, sizeof(ev));
-
-  // Destroy all operations associated with the descriptor.
-  op_queue<operation> ops;
-  asio::error_code ec;
-  for (int i = 0; i < max_ops; ++i)
-    op_queue_[i].cancel_operations(descriptor, ops, ec);
-}
-
-void dev_poll_reactor::cleanup_descriptor_data(
-    dev_poll_reactor::per_descriptor_data&)
-{
-}
-
-void dev_poll_reactor::run(long usec, op_queue<operation>& ops)
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-
-  // We can return immediately if there's no work to do and the reactor is
-  // not supposed to block.
-  if (usec == 0 && op_queue_[read_op].empty() && op_queue_[write_op].empty()
-      && op_queue_[except_op].empty() && timer_queues_.all_empty())
-    return;
-
-  // Write the pending event registration changes to the /dev/poll descriptor.
-  std::size_t events_size = sizeof(::pollfd) * pending_event_changes_.size();
-  if (events_size > 0)
-  {
-    errno = 0;
-    int result = ::write(dev_poll_fd_,
-        &pending_event_changes_[0], events_size);
-    if (result != static_cast<int>(events_size))
-    {
-      asio::error_code ec = asio::error_code(
-          errno, asio::error::get_system_category());
-      for (std::size_t i = 0; i < pending_event_changes_.size(); ++i)
-      {
-        int descriptor = pending_event_changes_[i].fd;
-        for (int j = 0; j < max_ops; ++j)
-          op_queue_[j].cancel_operations(descriptor, ops, ec);
-      }
-    }
-    pending_event_changes_.clear();
-    pending_event_change_index_.clear();
-  }
-
-  // Calculate timeout.
-  int timeout;
-  if (usec == 0)
-    timeout = 0;
-  else
-  {
-    timeout = (usec < 0) ? -1 : ((usec - 1) / 1000 + 1);
-    timeout = get_timeout(timeout);
-  }
-  lock.unlock();
-
-  // Block on the /dev/poll descriptor.
-  ::pollfd events[128] = { { 0, 0, 0 } };
-  ::dvpoll dp = { 0, 0, 0 };
-  dp.dp_fds = events;
-  dp.dp_nfds = 128;
-  dp.dp_timeout = timeout;
-  int num_events = ::ioctl(dev_poll_fd_, DP_POLL, &dp);
-
-  lock.lock();
-
-  // Dispatch the waiting events.
-  for (int i = 0; i < num_events; ++i)
-  {
-    int descriptor = events[i].fd;
-    if (descriptor == interrupter_.read_descriptor())
-    {
-      interrupter_.reset();
-    }
-    else
-    {
-      bool more_reads = false;
-      bool more_writes = false;
-      bool more_except = false;
-
-      // Exception operations must be processed first to ensure that any
-      // out-of-band data is read before normal data.
-      if (events[i].events & (POLLPRI | POLLERR | POLLHUP))
-        more_except =
-          op_queue_[except_op].perform_operations(descriptor, ops);
-      else
-        more_except = op_queue_[except_op].has_operation(descriptor);
-
-      if (events[i].events & (POLLIN | POLLERR | POLLHUP))
-        more_reads = op_queue_[read_op].perform_operations(descriptor, ops);
-      else
-        more_reads = op_queue_[read_op].has_operation(descriptor);
-
-      if (events[i].events & (POLLOUT | POLLERR | POLLHUP))
-        more_writes = op_queue_[write_op].perform_operations(descriptor, ops);
-      else
-        more_writes = op_queue_[write_op].has_operation(descriptor);
-
-      if ((events[i].events & (POLLERR | POLLHUP)) != 0
-            && !more_except && !more_reads && !more_writes)
-      {
-        // If we have an event and no operations associated with the
-        // descriptor then we need to delete the descriptor from /dev/poll.
-        // The poll operation can produce POLLHUP or POLLERR events when there
-        // is no operation pending, so if we do not remove the descriptor we
-        // can end up in a tight polling loop.
-        ::pollfd ev = { 0, 0, 0 };
-        ev.fd = descriptor;
-        ev.events = POLLREMOVE;
-        ev.revents = 0;
-        ::write(dev_poll_fd_, &ev, sizeof(ev));
-      }
-      else
-      {
-        ::pollfd ev = { 0, 0, 0 };
-        ev.fd = descriptor;
-        ev.events = POLLERR | POLLHUP;
-        if (more_reads)
-          ev.events |= POLLIN;
-        if (more_writes)
-          ev.events |= POLLOUT;
-        if (more_except)
-          ev.events |= POLLPRI;
-        ev.revents = 0;
-        int result = ::write(dev_poll_fd_, &ev, sizeof(ev));
-        if (result != sizeof(ev))
-        {
-          asio::error_code ec(errno,
-              asio::error::get_system_category());
-          for (int j = 0; j < max_ops; ++j)
-            op_queue_[j].cancel_operations(descriptor, ops, ec);
-        }
-      }
-    }
-  }
-  timer_queues_.get_ready_timers(ops);
-}
-
-void dev_poll_reactor::interrupt()
-{
-  interrupter_.interrupt();
-}
-
-int dev_poll_reactor::do_dev_poll_create()
-{
-  int fd = ::open("/dev/poll", O_RDWR);
-  if (fd == -1)
-  {
-    asio::error_code ec(errno,
-        asio::error::get_system_category());
-    asio::detail::throw_error(ec, "/dev/poll");
-  }
-  return fd;
-}
-
-void dev_poll_reactor::do_add_timer_queue(timer_queue_base& queue)
-{
-  mutex::scoped_lock lock(mutex_);
-  timer_queues_.insert(&queue);
-}
-
-void dev_poll_reactor::do_remove_timer_queue(timer_queue_base& queue)
-{
-  mutex::scoped_lock lock(mutex_);
-  timer_queues_.erase(&queue);
-}
-
-int dev_poll_reactor::get_timeout(int msec)
-{
-  // By default we will wait no longer than 5 minutes. This will ensure that
-  // any changes to the system clock are detected after no longer than this.
-  const int max_msec = 5 * 60 * 1000;
-  return timer_queues_.wait_duration_msec(
-      (msec < 0 || max_msec < msec) ? max_msec : msec);
-}
-
-void dev_poll_reactor::cancel_ops_unlocked(socket_type descriptor,
-    const asio::error_code& ec)
-{
-  bool need_interrupt = false;
-  op_queue<operation> ops;
-  for (int i = 0; i < max_ops; ++i)
-    need_interrupt = op_queue_[i].cancel_operations(
-        descriptor, ops, ec) || need_interrupt;
-  scheduler_.post_deferred_completions(ops);
-  if (need_interrupt)
-    interrupter_.interrupt();
-}
-
-::pollfd& dev_poll_reactor::add_pending_event_change(int descriptor)
-{
-  hash_map<int, std::size_t>::iterator iter
-    = pending_event_change_index_.find(descriptor);
-  if (iter == pending_event_change_index_.end())
-  {
-    std::size_t index = pending_event_changes_.size();
-    pending_event_changes_.reserve(pending_event_changes_.size() + 1);
-    pending_event_change_index_.insert(std::make_pair(descriptor, index));
-    pending_event_changes_.push_back(::pollfd());
-    pending_event_changes_[index].fd = descriptor;
-    pending_event_changes_[index].revents = 0;
-    return pending_event_changes_[index];
-  }
-  else
-  {
-    return pending_event_changes_[iter->second];
-  }
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_HAS_DEV_POLL)
-
-#endif // ASIO_DETAIL_IMPL_DEV_POLL_REACTOR_IPP
diff --git a/lib/asio/detail/impl/epoll_reactor.hpp b/lib/asio/detail/impl/epoll_reactor.hpp
deleted file mode 100644
index f990059..0000000
--- a/lib/asio/detail/impl/epoll_reactor.hpp
+++ /dev/null
@@ -1,89 +0,0 @@
-//
-// detail/impl/epoll_reactor.hpp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_EPOLL_REACTOR_HPP
-#define ASIO_DETAIL_IMPL_EPOLL_REACTOR_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#if defined(ASIO_HAS_EPOLL)
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-template <typename Time_Traits>
-void epoll_reactor::add_timer_queue(timer_queue<Time_Traits>& queue)
-{
-  do_add_timer_queue(queue);
-}
-
-template <typename Time_Traits>
-void epoll_reactor::remove_timer_queue(timer_queue<Time_Traits>& queue)
-{
-  do_remove_timer_queue(queue);
-}
-
-template <typename Time_Traits>
-void epoll_reactor::schedule_timer(timer_queue<Time_Traits>& queue,
-    const typename Time_Traits::time_type& time,
-    typename timer_queue<Time_Traits>::per_timer_data& timer, wait_op* op)
-{
-  mutex::scoped_lock lock(mutex_);
-
-  if (shutdown_)
-  {
-    scheduler_.post_immediate_completion(op, false);
-    return;
-  }
-
-  bool earliest = queue.enqueue_timer(time, timer, op);
-  scheduler_.work_started();
-  if (earliest)
-    update_timeout();
-}
-
-template <typename Time_Traits>
-std::size_t epoll_reactor::cancel_timer(timer_queue<Time_Traits>& queue,
-    typename timer_queue<Time_Traits>::per_timer_data& timer,
-    std::size_t max_cancelled)
-{
-  mutex::scoped_lock lock(mutex_);
-  op_queue<operation> ops;
-  std::size_t n = queue.cancel_timer(timer, ops, max_cancelled);
-  lock.unlock();
-  scheduler_.post_deferred_completions(ops);
-  return n;
-}
-
-template <typename Time_Traits>
-void epoll_reactor::move_timer(timer_queue<Time_Traits>& queue,
-    typename timer_queue<Time_Traits>::per_timer_data& target,
-    typename timer_queue<Time_Traits>::per_timer_data& source)
-{
-  mutex::scoped_lock lock(mutex_);
-  op_queue<operation> ops;
-  queue.cancel_timer(target, ops);
-  queue.move_timer(target, source);
-  lock.unlock();
-  scheduler_.post_deferred_completions(ops);
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_HAS_EPOLL)
-
-#endif // ASIO_DETAIL_IMPL_EPOLL_REACTOR_HPP
diff --git a/lib/asio/detail/impl/epoll_reactor.ipp b/lib/asio/detail/impl/epoll_reactor.ipp
deleted file mode 100644
index 65584a4..0000000
--- a/lib/asio/detail/impl/epoll_reactor.ipp
+++ /dev/null
@@ -1,787 +0,0 @@
-//
-// detail/impl/epoll_reactor.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_EPOLL_REACTOR_IPP
-#define ASIO_DETAIL_IMPL_EPOLL_REACTOR_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_HAS_EPOLL)
-
-#include <cstddef>
-#include <sys/epoll.h>
-#include "asio/detail/epoll_reactor.hpp"
-#include "asio/detail/throw_error.hpp"
-#include "asio/error.hpp"
-
-#if defined(ASIO_HAS_TIMERFD)
-# include <sys/timerfd.h>
-#endif // defined(ASIO_HAS_TIMERFD)
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-epoll_reactor::epoll_reactor(asio::execution_context& ctx)
-  : execution_context_service_base<epoll_reactor>(ctx),
-    scheduler_(use_service<scheduler>(ctx)),
-    mutex_(ASIO_CONCURRENCY_HINT_IS_LOCKING(
-          REACTOR_REGISTRATION, scheduler_.concurrency_hint())),
-    interrupter_(),
-    epoll_fd_(do_epoll_create()),
-    timer_fd_(do_timerfd_create()),
-    shutdown_(false),
-    registered_descriptors_mutex_(mutex_.enabled())
-{
-  // Add the interrupter's descriptor to epoll.
-  epoll_event ev = { 0, { 0 } };
-  ev.events = EPOLLIN | EPOLLERR | EPOLLET;
-  ev.data.ptr = &interrupter_;
-  epoll_ctl(epoll_fd_, EPOLL_CTL_ADD, interrupter_.read_descriptor(), &ev);
-  interrupter_.interrupt();
-
-  // Add the timer descriptor to epoll.
-  if (timer_fd_ != -1)
-  {
-    ev.events = EPOLLIN | EPOLLERR;
-    ev.data.ptr = &timer_fd_;
-    epoll_ctl(epoll_fd_, EPOLL_CTL_ADD, timer_fd_, &ev);
-  }
-}
-
-epoll_reactor::~epoll_reactor()
-{
-  if (epoll_fd_ != -1)
-    close(epoll_fd_);
-  if (timer_fd_ != -1)
-    close(timer_fd_);
-}
-
-void epoll_reactor::shutdown()
-{
-  mutex::scoped_lock lock(mutex_);
-  shutdown_ = true;
-  lock.unlock();
-
-  op_queue<operation> ops;
-
-  while (descriptor_state* state = registered_descriptors_.first())
-  {
-    for (int i = 0; i < max_ops; ++i)
-      ops.push(state->op_queue_[i]);
-    state->shutdown_ = true;
-    registered_descriptors_.free(state);
-  }
-
-  timer_queues_.get_all_timers(ops);
-
-  scheduler_.abandon_operations(ops);
-}
-
-void epoll_reactor::notify_fork(
-    asio::execution_context::fork_event fork_ev)
-{
-  if (fork_ev == asio::execution_context::fork_child)
-  {
-    if (epoll_fd_ != -1)
-      ::close(epoll_fd_);
-    epoll_fd_ = -1;
-    epoll_fd_ = do_epoll_create();
-
-    if (timer_fd_ != -1)
-      ::close(timer_fd_);
-    timer_fd_ = -1;
-    timer_fd_ = do_timerfd_create();
-
-    interrupter_.recreate();
-
-    // Add the interrupter's descriptor to epoll.
-    epoll_event ev = { 0, { 0 } };
-    ev.events = EPOLLIN | EPOLLERR | EPOLLET;
-    ev.data.ptr = &interrupter_;
-    epoll_ctl(epoll_fd_, EPOLL_CTL_ADD, interrupter_.read_descriptor(), &ev);
-    interrupter_.interrupt();
-
-    // Add the timer descriptor to epoll.
-    if (timer_fd_ != -1)
-    {
-      ev.events = EPOLLIN | EPOLLERR;
-      ev.data.ptr = &timer_fd_;
-      epoll_ctl(epoll_fd_, EPOLL_CTL_ADD, timer_fd_, &ev);
-    }
-
-    update_timeout();
-
-    // Re-register all descriptors with epoll.
-    mutex::scoped_lock descriptors_lock(registered_descriptors_mutex_);
-    for (descriptor_state* state = registered_descriptors_.first();
-        state != 0; state = state->next_)
-    {
-      ev.events = state->registered_events_;
-      ev.data.ptr = state;
-      int result = epoll_ctl(epoll_fd_, EPOLL_CTL_ADD, state->descriptor_, &ev);
-      if (result != 0)
-      {
-        asio::error_code ec(errno,
-            asio::error::get_system_category());
-        asio::detail::throw_error(ec, "epoll re-registration");
-      }
-    }
-  }
-}
-
-void epoll_reactor::init_task()
-{
-  scheduler_.init_task();
-}
-
-int epoll_reactor::register_descriptor(socket_type descriptor,
-    epoll_reactor::per_descriptor_data& descriptor_data)
-{
-  descriptor_data = allocate_descriptor_state();
-
-  ASIO_HANDLER_REACTOR_REGISTRATION((
-        context(), static_cast<uintmax_t>(descriptor),
-        reinterpret_cast<uintmax_t>(descriptor_data)));
-
-  {
-    mutex::scoped_lock descriptor_lock(descriptor_data->mutex_);
-
-    descriptor_data->reactor_ = this;
-    descriptor_data->descriptor_ = descriptor;
-    descriptor_data->shutdown_ = false;
-    for (int i = 0; i < max_ops; ++i)
-      descriptor_data->try_speculative_[i] = true;
-  }
-
-  epoll_event ev = { 0, { 0 } };
-  ev.events = EPOLLIN | EPOLLERR | EPOLLHUP | EPOLLPRI | EPOLLET;
-  descriptor_data->registered_events_ = ev.events;
-  ev.data.ptr = descriptor_data;
-  int result = epoll_ctl(epoll_fd_, EPOLL_CTL_ADD, descriptor, &ev);
-  if (result != 0)
-  {
-    if (errno == EPERM)
-    {
-      // This file descriptor type is not supported by epoll. However, if it is
-      // a regular file then operations on it will not block. We will allow
-      // this descriptor to be used and fail later if an operation on it would
-      // otherwise require a trip through the reactor.
-      descriptor_data->registered_events_ = 0;
-      return 0;
-    }
-    return errno;
-  }
-
-  return 0;
-}
-
-int epoll_reactor::register_internal_descriptor(
-    int op_type, socket_type descriptor,
-    epoll_reactor::per_descriptor_data& descriptor_data, reactor_op* op)
-{
-  descriptor_data = allocate_descriptor_state();
-
-  ASIO_HANDLER_REACTOR_REGISTRATION((
-        context(), static_cast<uintmax_t>(descriptor),
-        reinterpret_cast<uintmax_t>(descriptor_data)));
-
-  {
-    mutex::scoped_lock descriptor_lock(descriptor_data->mutex_);
-
-    descriptor_data->reactor_ = this;
-    descriptor_data->descriptor_ = descriptor;
-    descriptor_data->shutdown_ = false;
-    descriptor_data->op_queue_[op_type].push(op);
-    for (int i = 0; i < max_ops; ++i)
-      descriptor_data->try_speculative_[i] = true;
-  }
-
-  epoll_event ev = { 0, { 0 } };
-  ev.events = EPOLLIN | EPOLLERR | EPOLLHUP | EPOLLPRI | EPOLLET;
-  descriptor_data->registered_events_ = ev.events;
-  ev.data.ptr = descriptor_data;
-  int result = epoll_ctl(epoll_fd_, EPOLL_CTL_ADD, descriptor, &ev);
-  if (result != 0)
-    return errno;
-
-  return 0;
-}
-
-void epoll_reactor::move_descriptor(socket_type,
-    epoll_reactor::per_descriptor_data& target_descriptor_data,
-    epoll_reactor::per_descriptor_data& source_descriptor_data)
-{
-  target_descriptor_data = source_descriptor_data;
-  source_descriptor_data = 0;
-}
-
-void epoll_reactor::start_op(int op_type, socket_type descriptor,
-    epoll_reactor::per_descriptor_data& descriptor_data, reactor_op* op,
-    bool is_continuation, bool allow_speculative)
-{
-  if (!descriptor_data)
-  {
-    op->ec_ = asio::error::bad_descriptor;
-    post_immediate_completion(op, is_continuation);
-    return;
-  }
-
-  mutex::scoped_lock descriptor_lock(descriptor_data->mutex_);
-
-  if (descriptor_data->shutdown_)
-  {
-    post_immediate_completion(op, is_continuation);
-    return;
-  }
-
-  if (descriptor_data->op_queue_[op_type].empty())
-  {
-    if (allow_speculative
-        && (op_type != read_op
-          || descriptor_data->op_queue_[except_op].empty()))
-    {
-      if (descriptor_data->try_speculative_[op_type])
-      {
-        if (reactor_op::status status = op->perform())
-        {
-          if (status == reactor_op::done_and_exhausted)
-            if (descriptor_data->registered_events_ != 0)
-              descriptor_data->try_speculative_[op_type] = false;
-          descriptor_lock.unlock();
-          scheduler_.post_immediate_completion(op, is_continuation);
-          return;
-        }
-      }
-
-      if (descriptor_data->registered_events_ == 0)
-      {
-        op->ec_ = asio::error::operation_not_supported;
-        scheduler_.post_immediate_completion(op, is_continuation);
-        return;
-      }
-
-      if (op_type == write_op)
-      {
-        if ((descriptor_data->registered_events_ & EPOLLOUT) == 0)
-        {
-          epoll_event ev = { 0, { 0 } };
-          ev.events = descriptor_data->registered_events_ | EPOLLOUT;
-          ev.data.ptr = descriptor_data;
-          if (epoll_ctl(epoll_fd_, EPOLL_CTL_MOD, descriptor, &ev) == 0)
-          {
-            descriptor_data->registered_events_ |= ev.events;
-          }
-          else
-          {
-            op->ec_ = asio::error_code(errno,
-                asio::error::get_system_category());
-            scheduler_.post_immediate_completion(op, is_continuation);
-            return;
-          }
-        }
-      }
-    }
-    else if (descriptor_data->registered_events_ == 0)
-    {
-      op->ec_ = asio::error::operation_not_supported;
-      scheduler_.post_immediate_completion(op, is_continuation);
-      return;
-    }
-    else
-    {
-      if (op_type == write_op)
-      {
-        descriptor_data->registered_events_ |= EPOLLOUT;
-      }
-
-      epoll_event ev = { 0, { 0 } };
-      ev.events = descriptor_data->registered_events_;
-      ev.data.ptr = descriptor_data;
-      epoll_ctl(epoll_fd_, EPOLL_CTL_MOD, descriptor, &ev);
-    }
-  }
-
-  descriptor_data->op_queue_[op_type].push(op);
-  scheduler_.work_started();
-}
-
-void epoll_reactor::cancel_ops(socket_type,
-    epoll_reactor::per_descriptor_data& descriptor_data)
-{
-  if (!descriptor_data)
-    return;
-
-  mutex::scoped_lock descriptor_lock(descriptor_data->mutex_);
-
-  op_queue<operation> ops;
-  for (int i = 0; i < max_ops; ++i)
-  {
-    while (reactor_op* op = descriptor_data->op_queue_[i].front())
-    {
-      op->ec_ = asio::error::operation_aborted;
-      descriptor_data->op_queue_[i].pop();
-      ops.push(op);
-    }
-  }
-
-  descriptor_lock.unlock();
-
-  scheduler_.post_deferred_completions(ops);
-}
-
-void epoll_reactor::deregister_descriptor(socket_type descriptor,
-    epoll_reactor::per_descriptor_data& descriptor_data, bool closing)
-{
-  if (!descriptor_data)
-    return;
-
-  mutex::scoped_lock descriptor_lock(descriptor_data->mutex_);
-
-  if (!descriptor_data->shutdown_)
-  {
-    if (closing)
-    {
-      // The descriptor will be automatically removed from the epoll set when
-      // it is closed.
-    }
-    else if (descriptor_data->registered_events_ != 0)
-    {
-      epoll_event ev = { 0, { 0 } };
-      epoll_ctl(epoll_fd_, EPOLL_CTL_DEL, descriptor, &ev);
-    }
-
-    op_queue<operation> ops;
-    for (int i = 0; i < max_ops; ++i)
-    {
-      while (reactor_op* op = descriptor_data->op_queue_[i].front())
-      {
-        op->ec_ = asio::error::operation_aborted;
-        descriptor_data->op_queue_[i].pop();
-        ops.push(op);
-      }
-    }
-
-    descriptor_data->descriptor_ = -1;
-    descriptor_data->shutdown_ = true;
-
-    descriptor_lock.unlock();
-
-    ASIO_HANDLER_REACTOR_DEREGISTRATION((
-          context(), static_cast<uintmax_t>(descriptor),
-          reinterpret_cast<uintmax_t>(descriptor_data)));
-
-    scheduler_.post_deferred_completions(ops);
-
-    // Leave descriptor_data set so that it will be freed by the subsequent
-    // call to cleanup_descriptor_data.
-  }
-  else
-  {
-    // We are shutting down, so prevent cleanup_descriptor_data from freeing
-    // the descriptor_data object and let the destructor free it instead.
-    descriptor_data = 0;
-  }
-}
-
-void epoll_reactor::deregister_internal_descriptor(socket_type descriptor,
-    epoll_reactor::per_descriptor_data& descriptor_data)
-{
-  if (!descriptor_data)
-    return;
-
-  mutex::scoped_lock descriptor_lock(descriptor_data->mutex_);
-
-  if (!descriptor_data->shutdown_)
-  {
-    epoll_event ev = { 0, { 0 } };
-    epoll_ctl(epoll_fd_, EPOLL_CTL_DEL, descriptor, &ev);
-
-    op_queue<operation> ops;
-    for (int i = 0; i < max_ops; ++i)
-      ops.push(descriptor_data->op_queue_[i]);
-
-    descriptor_data->descriptor_ = -1;
-    descriptor_data->shutdown_ = true;
-
-    descriptor_lock.unlock();
-
-    ASIO_HANDLER_REACTOR_DEREGISTRATION((
-          context(), static_cast<uintmax_t>(descriptor),
-          reinterpret_cast<uintmax_t>(descriptor_data)));
-
-    // Leave descriptor_data set so that it will be freed by the subsequent
-    // call to cleanup_descriptor_data.
-  }
-  else
-  {
-    // We are shutting down, so prevent cleanup_descriptor_data from freeing
-    // the descriptor_data object and let the destructor free it instead.
-    descriptor_data = 0;
-  }
-}
-
-void epoll_reactor::cleanup_descriptor_data(
-    per_descriptor_data& descriptor_data)
-{
-  if (descriptor_data)
-  {
-    free_descriptor_state(descriptor_data);
-    descriptor_data = 0;
-  }
-}
-
-void epoll_reactor::run(long usec, op_queue<operation>& ops)
-{
-  // This code relies on the fact that the scheduler queues the reactor task
-  // behind all descriptor operations generated by this function. This means,
-  // that by the time we reach this point, any previously returned descriptor
-  // operations have already been dequeued. Therefore it is now safe for us to
-  // reuse and return them for the scheduler to queue again.
-
-  // Calculate timeout. Check the timer queues only if timerfd is not in use.
-  int timeout;
-  if (usec == 0)
-    timeout = 0;
-  else
-  {
-    timeout = (usec < 0) ? -1 : ((usec - 1) / 1000 + 1);
-    if (timer_fd_ == -1)
-    {
-      mutex::scoped_lock lock(mutex_);
-      timeout = get_timeout(timeout);
-    }
-  }
-
-  // Block on the epoll descriptor.
-  epoll_event events[128];
-  int num_events = epoll_wait(epoll_fd_, events, 128, timeout);
-
-#if defined(ASIO_ENABLE_HANDLER_TRACKING)
-  // Trace the waiting events.
-  for (int i = 0; i < num_events; ++i)
-  {
-    void* ptr = events[i].data.ptr;
-    if (ptr == &interrupter_)
-    {
-      // Ignore.
-    }
-# if defined(ASIO_HAS_TIMERFD)
-    else if (ptr == &timer_fd_)
-    {
-      // Ignore.
-    }
-# endif // defined(ASIO_HAS_TIMERFD)
-    else
-    {
-      unsigned event_mask = 0;
-      if ((events[i].events & EPOLLIN) != 0)
-        event_mask |= ASIO_HANDLER_REACTOR_READ_EVENT;
-      if ((events[i].events & EPOLLOUT))
-        event_mask |= ASIO_HANDLER_REACTOR_WRITE_EVENT;
-      if ((events[i].events & (EPOLLERR | EPOLLHUP)) != 0)
-        event_mask |= ASIO_HANDLER_REACTOR_ERROR_EVENT;
-      ASIO_HANDLER_REACTOR_EVENTS((context(),
-            reinterpret_cast<uintmax_t>(ptr), event_mask));
-    }
-  }
-#endif // defined(ASIO_ENABLE_HANDLER_TRACKING)
-
-#if defined(ASIO_HAS_TIMERFD)
-  bool check_timers = (timer_fd_ == -1);
-#else // defined(ASIO_HAS_TIMERFD)
-  bool check_timers = true;
-#endif // defined(ASIO_HAS_TIMERFD)
-
-  // Dispatch the waiting events.
-  for (int i = 0; i < num_events; ++i)
-  {
-    void* ptr = events[i].data.ptr;
-    if (ptr == &interrupter_)
-    {
-      // No need to reset the interrupter since we're leaving the descriptor
-      // in a ready-to-read state and relying on edge-triggered notifications
-      // to make it so that we only get woken up when the descriptor's epoll
-      // registration is updated.
-
-#if defined(ASIO_HAS_TIMERFD)
-      if (timer_fd_ == -1)
-        check_timers = true;
-#else // defined(ASIO_HAS_TIMERFD)
-      check_timers = true;
-#endif // defined(ASIO_HAS_TIMERFD)
-    }
-#if defined(ASIO_HAS_TIMERFD)
-    else if (ptr == &timer_fd_)
-    {
-      check_timers = true;
-    }
-#endif // defined(ASIO_HAS_TIMERFD)
-    else
-    {
-      // The descriptor operation doesn't count as work in and of itself, so we
-      // don't call work_started() here. This still allows the scheduler to
-      // stop if the only remaining operations are descriptor operations.
-      descriptor_state* descriptor_data = static_cast<descriptor_state*>(ptr);
-      if (!ops.is_enqueued(descriptor_data))
-      {
-        descriptor_data->set_ready_events(events[i].events);
-        ops.push(descriptor_data);
-      }
-      else
-      {
-        descriptor_data->add_ready_events(events[i].events);
-      }
-    }
-  }
-
-  if (check_timers)
-  {
-    mutex::scoped_lock common_lock(mutex_);
-    timer_queues_.get_ready_timers(ops);
-
-#if defined(ASIO_HAS_TIMERFD)
-    if (timer_fd_ != -1)
-    {
-      itimerspec new_timeout;
-      itimerspec old_timeout;
-      int flags = get_timeout(new_timeout);
-      timerfd_settime(timer_fd_, flags, &new_timeout, &old_timeout);
-    }
-#endif // defined(ASIO_HAS_TIMERFD)
-  }
-}
-
-void epoll_reactor::interrupt()
-{
-  epoll_event ev = { 0, { 0 } };
-  ev.events = EPOLLIN | EPOLLERR | EPOLLET;
-  ev.data.ptr = &interrupter_;
-  epoll_ctl(epoll_fd_, EPOLL_CTL_MOD, interrupter_.read_descriptor(), &ev);
-}
-
-int epoll_reactor::do_epoll_create()
-{
-#if defined(EPOLL_CLOEXEC)
-  int fd = epoll_create1(EPOLL_CLOEXEC);
-#else // defined(EPOLL_CLOEXEC)
-  int fd = -1;
-  errno = EINVAL;
-#endif // defined(EPOLL_CLOEXEC)
-
-  if (fd == -1 && (errno == EINVAL || errno == ENOSYS))
-  {
-    fd = epoll_create(epoll_size);
-    if (fd != -1)
-      ::fcntl(fd, F_SETFD, FD_CLOEXEC);
-  }
-
-  if (fd == -1)
-  {
-    asio::error_code ec(errno,
-        asio::error::get_system_category());
-    asio::detail::throw_error(ec, "epoll");
-  }
-
-  return fd;
-}
-
-int epoll_reactor::do_timerfd_create()
-{
-#if defined(ASIO_HAS_TIMERFD)
-# if defined(TFD_CLOEXEC)
-  int fd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC);
-# else // defined(TFD_CLOEXEC)
-  int fd = -1;
-  errno = EINVAL;
-# endif // defined(TFD_CLOEXEC)
-
-  if (fd == -1 && errno == EINVAL)
-  {
-    fd = timerfd_create(CLOCK_MONOTONIC, 0);
-    if (fd != -1)
-      ::fcntl(fd, F_SETFD, FD_CLOEXEC);
-  }
-
-  return fd;
-#else // defined(ASIO_HAS_TIMERFD)
-  return -1;
-#endif // defined(ASIO_HAS_TIMERFD)
-}
-
-epoll_reactor::descriptor_state* epoll_reactor::allocate_descriptor_state()
-{
-  mutex::scoped_lock descriptors_lock(registered_descriptors_mutex_);
-  return registered_descriptors_.alloc(ASIO_CONCURRENCY_HINT_IS_LOCKING(
-        REACTOR_IO, scheduler_.concurrency_hint()));
-}
-
-void epoll_reactor::free_descriptor_state(epoll_reactor::descriptor_state* s)
-{
-  mutex::scoped_lock descriptors_lock(registered_descriptors_mutex_);
-  registered_descriptors_.free(s);
-}
-
-void epoll_reactor::do_add_timer_queue(timer_queue_base& queue)
-{
-  mutex::scoped_lock lock(mutex_);
-  timer_queues_.insert(&queue);
-}
-
-void epoll_reactor::do_remove_timer_queue(timer_queue_base& queue)
-{
-  mutex::scoped_lock lock(mutex_);
-  timer_queues_.erase(&queue);
-}
-
-void epoll_reactor::update_timeout()
-{
-#if defined(ASIO_HAS_TIMERFD)
-  if (timer_fd_ != -1)
-  {
-    itimerspec new_timeout;
-    itimerspec old_timeout;
-    int flags = get_timeout(new_timeout);
-    timerfd_settime(timer_fd_, flags, &new_timeout, &old_timeout);
-    return;
-  }
-#endif // defined(ASIO_HAS_TIMERFD)
-  interrupt();
-}
-
-int epoll_reactor::get_timeout(int msec)
-{
-  // By default we will wait no longer than 5 minutes. This will ensure that
-  // any changes to the system clock are detected after no longer than this.
-  const int max_msec = 5 * 60 * 1000;
-  return timer_queues_.wait_duration_msec(
-      (msec < 0 || max_msec < msec) ? max_msec : msec);
-}
-
-#if defined(ASIO_HAS_TIMERFD)
-int epoll_reactor::get_timeout(itimerspec& ts)
-{
-  ts.it_interval.tv_sec = 0;
-  ts.it_interval.tv_nsec = 0;
-
-  long usec = timer_queues_.wait_duration_usec(5 * 60 * 1000 * 1000);
-  ts.it_value.tv_sec = usec / 1000000;
-  ts.it_value.tv_nsec = usec ? (usec % 1000000) * 1000 : 1;
-
-  return usec ? 0 : TFD_TIMER_ABSTIME;
-}
-#endif // defined(ASIO_HAS_TIMERFD)
-
-struct epoll_reactor::perform_io_cleanup_on_block_exit
-{
-  explicit perform_io_cleanup_on_block_exit(epoll_reactor* r)
-    : reactor_(r), first_op_(0)
-  {
-  }
-
-  ~perform_io_cleanup_on_block_exit()
-  {
-    if (first_op_)
-    {
-      // Post the remaining completed operations for invocation.
-      if (!ops_.empty())
-        reactor_->scheduler_.post_deferred_completions(ops_);
-
-      // A user-initiated operation has completed, but there's no need to
-      // explicitly call work_finished() here. Instead, we'll take advantage of
-      // the fact that the scheduler will call work_finished() once we return.
-    }
-    else
-    {
-      // No user-initiated operations have completed, so we need to compensate
-      // for the work_finished() call that the scheduler will make once this
-      // operation returns.
-      reactor_->scheduler_.compensating_work_started();
-    }
-  }
-
-  epoll_reactor* reactor_;
-  op_queue<operation> ops_;
-  operation* first_op_;
-};
-
-epoll_reactor::descriptor_state::descriptor_state(bool locking)
-  : operation(&epoll_reactor::descriptor_state::do_complete),
-    mutex_(locking)
-{
-}
-
-operation* epoll_reactor::descriptor_state::perform_io(uint32_t events)
-{
-  mutex_.lock();
-  perform_io_cleanup_on_block_exit io_cleanup(reactor_);
-  mutex::scoped_lock descriptor_lock(mutex_, mutex::scoped_lock::adopt_lock);
-
-  // Exception operations must be processed first to ensure that any
-  // out-of-band data is read before normal data.
-  static const int flag[max_ops] = { EPOLLIN, EPOLLOUT, EPOLLPRI };
-  for (int j = max_ops - 1; j >= 0; --j)
-  {
-    if (events & (flag[j] | EPOLLERR | EPOLLHUP))
-    {
-      try_speculative_[j] = true;
-      while (reactor_op* op = op_queue_[j].front())
-      {
-        if (reactor_op::status status = op->perform())
-        {
-          op_queue_[j].pop();
-          io_cleanup.ops_.push(op);
-          if (status == reactor_op::done_and_exhausted)
-          {
-            try_speculative_[j] = false;
-            break;
-          }
-        }
-        else
-          break;
-      }
-    }
-  }
-
-  // The first operation will be returned for completion now. The others will
-  // be posted for later by the io_cleanup object's destructor.
-  io_cleanup.first_op_ = io_cleanup.ops_.front();
-  io_cleanup.ops_.pop();
-  return io_cleanup.first_op_;
-}
-
-void epoll_reactor::descriptor_state::do_complete(
-    void* owner, operation* base,
-    const asio::error_code& ec, std::size_t bytes_transferred)
-{
-  if (owner)
-  {
-    descriptor_state* descriptor_data = static_cast<descriptor_state*>(base);
-    uint32_t events = static_cast<uint32_t>(bytes_transferred);
-    if (operation* op = descriptor_data->perform_io(events))
-    {
-      op->complete(owner, ec, 0);
-    }
-  }
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_HAS_EPOLL)
-
-#endif // ASIO_DETAIL_IMPL_EPOLL_REACTOR_IPP
diff --git a/lib/asio/detail/impl/eventfd_select_interrupter.ipp b/lib/asio/detail/impl/eventfd_select_interrupter.ipp
deleted file mode 100644
index c56e89a..0000000
--- a/lib/asio/detail/impl/eventfd_select_interrupter.ipp
+++ /dev/null
@@ -1,165 +0,0 @@
-//
-// detail/impl/eventfd_select_interrupter.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-// Copyright (c) 2008 Roelof Naude (roelof.naude at gmail dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_EVENTFD_SELECT_INTERRUPTER_IPP
-#define ASIO_DETAIL_IMPL_EVENTFD_SELECT_INTERRUPTER_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_HAS_EVENTFD)
-
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <fcntl.h>
-#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
-# include <asm/unistd.h>
-#else // __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
-# include <sys/eventfd.h>
-#endif // __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
-#include "asio/detail/cstdint.hpp"
-#include "asio/detail/eventfd_select_interrupter.hpp"
-#include "asio/detail/throw_error.hpp"
-#include "asio/error.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-eventfd_select_interrupter::eventfd_select_interrupter()
-{
-  open_descriptors();
-}
-
-void eventfd_select_interrupter::open_descriptors()
-{
-#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
-  write_descriptor_ = read_descriptor_ = syscall(__NR_eventfd, 0);
-  if (read_descriptor_ != -1)
-  {
-    ::fcntl(read_descriptor_, F_SETFL, O_NONBLOCK);
-    ::fcntl(read_descriptor_, F_SETFD, FD_CLOEXEC);
-  }
-#else // __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
-# if defined(EFD_CLOEXEC) && defined(EFD_NONBLOCK)
-  write_descriptor_ = read_descriptor_ =
-    ::eventfd(0, EFD_CLOEXEC | EFD_NONBLOCK);
-# else // defined(EFD_CLOEXEC) && defined(EFD_NONBLOCK)
-  errno = EINVAL;
-  write_descriptor_ = read_descriptor_ = -1;
-# endif // defined(EFD_CLOEXEC) && defined(EFD_NONBLOCK)
-  if (read_descriptor_ == -1 && errno == EINVAL)
-  {
-    write_descriptor_ = read_descriptor_ = ::eventfd(0, 0);
-    if (read_descriptor_ != -1)
-    {
-      ::fcntl(read_descriptor_, F_SETFL, O_NONBLOCK);
-      ::fcntl(read_descriptor_, F_SETFD, FD_CLOEXEC);
-    }
-  }
-#endif // __GLIBC__ == 2 && __GLIBC_MINOR__ < 8
-
-  if (read_descriptor_ == -1)
-  {
-    int pipe_fds[2];
-    if (pipe(pipe_fds) == 0)
-    {
-      read_descriptor_ = pipe_fds[0];
-      ::fcntl(read_descriptor_, F_SETFL, O_NONBLOCK);
-      ::fcntl(read_descriptor_, F_SETFD, FD_CLOEXEC);
-      write_descriptor_ = pipe_fds[1];
-      ::fcntl(write_descriptor_, F_SETFL, O_NONBLOCK);
-      ::fcntl(write_descriptor_, F_SETFD, FD_CLOEXEC);
-    }
-    else
-    {
-      asio::error_code ec(errno,
-          asio::error::get_system_category());
-      asio::detail::throw_error(ec, "eventfd_select_interrupter");
-    }
-  }
-}
-
-eventfd_select_interrupter::~eventfd_select_interrupter()
-{
-  close_descriptors();
-}
-
-void eventfd_select_interrupter::close_descriptors()
-{
-  if (write_descriptor_ != -1 && write_descriptor_ != read_descriptor_)
-    ::close(write_descriptor_);
-  if (read_descriptor_ != -1)
-    ::close(read_descriptor_);
-}
-
-void eventfd_select_interrupter::recreate()
-{
-  close_descriptors();
-
-  write_descriptor_ = -1;
-  read_descriptor_ = -1;
-
-  open_descriptors();
-}
-
-void eventfd_select_interrupter::interrupt()
-{
-  uint64_t counter(1UL);
-  int result = ::write(write_descriptor_, &counter, sizeof(uint64_t));
-  (void)result;
-}
-
-bool eventfd_select_interrupter::reset()
-{
-  if (write_descriptor_ == read_descriptor_)
-  {
-    for (;;)
-    {
-      // Only perform one read. The kernel maintains an atomic counter.
-      uint64_t counter(0);
-      errno = 0;
-      int bytes_read = ::read(read_descriptor_, &counter, sizeof(uint64_t));
-      if (bytes_read < 0 && errno == EINTR)
-        continue;
-      bool was_interrupted = (bytes_read > 0);
-      return was_interrupted;
-    }
-  }
-  else
-  {
-    for (;;)
-    {
-      // Clear all data from the pipe.
-      char data[1024];
-      int bytes_read = ::read(read_descriptor_, data, sizeof(data));
-      if (bytes_read < 0 && errno == EINTR)
-        continue;
-      bool was_interrupted = (bytes_read > 0);
-      while (bytes_read == sizeof(data))
-        bytes_read = ::read(read_descriptor_, data, sizeof(data));
-      return was_interrupted;
-    }
-  }
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_HAS_EVENTFD)
-
-#endif // ASIO_DETAIL_IMPL_EVENTFD_SELECT_INTERRUPTER_IPP
diff --git a/lib/asio/detail/impl/handler_tracking.ipp b/lib/asio/detail/impl/handler_tracking.ipp
deleted file mode 100644
index 5a4ff6f..0000000
--- a/lib/asio/detail/impl/handler_tracking.ipp
+++ /dev/null
@@ -1,358 +0,0 @@
-//
-// detail/impl/handler_tracking.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_HANDLER_TRACKING_IPP
-#define ASIO_DETAIL_IMPL_HANDLER_TRACKING_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_CUSTOM_HANDLER_TRACKING)
-
-// The handler tracking implementation is provided by the user-specified header.
-
-#elif defined(ASIO_ENABLE_HANDLER_TRACKING)
-
-#include <cstdarg>
-#include <cstdio>
-#include "asio/detail/handler_tracking.hpp"
-
-#if defined(ASIO_HAS_BOOST_DATE_TIME)
-# include "asio/time_traits.hpp"
-#elif defined(ASIO_HAS_CHRONO)
-# include "asio/detail/chrono.hpp"
-# include "asio/detail/chrono_time_traits.hpp"
-# include "asio/wait_traits.hpp"
-#endif // defined(ASIO_HAS_BOOST_DATE_TIME)
-
-#if defined(ASIO_WINDOWS_RUNTIME)
-# include "asio/detail/socket_types.hpp"
-#elif !defined(ASIO_WINDOWS)
-# include <unistd.h>
-#endif // !defined(ASIO_WINDOWS)
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-struct handler_tracking_timestamp
-{
-  uint64_t seconds;
-  uint64_t microseconds;
-
-  handler_tracking_timestamp()
-  {
-#if defined(ASIO_HAS_BOOST_DATE_TIME)
-    boost::posix_time::ptime epoch(boost::gregorian::date(1970, 1, 1));
-    boost::posix_time::time_duration now =
-      boost::posix_time::microsec_clock::universal_time() - epoch;
-#elif defined(ASIO_HAS_CHRONO)
-    typedef chrono_time_traits<chrono::system_clock,
-        asio::wait_traits<chrono::system_clock> > traits_helper;
-    traits_helper::posix_time_duration now(
-        chrono::system_clock::now().time_since_epoch());
-#endif
-    seconds = static_cast<uint64_t>(now.total_seconds());
-    microseconds = static_cast<uint64_t>(now.total_microseconds() % 1000000);
-  }
-};
-
-struct handler_tracking::tracking_state
-{
-  static_mutex mutex_;
-  uint64_t next_id_;
-  tss_ptr<completion>* current_completion_;
-};
-
-handler_tracking::tracking_state* handler_tracking::get_state()
-{
-  static tracking_state state = { ASIO_STATIC_MUTEX_INIT, 1, 0 };
-  return &state;
-}
-
-void handler_tracking::init()
-{
-  static tracking_state* state = get_state();
-
-  state->mutex_.init();
-
-  static_mutex::scoped_lock lock(state->mutex_);
-  if (state->current_completion_ == 0)
-    state->current_completion_ = new tss_ptr<completion>;
-}
-
-void handler_tracking::creation(execution_context&,
-    handler_tracking::tracked_handler& h,
-    const char* object_type, void* object,
-    uintmax_t /*native_handle*/, const char* op_name)
-{
-  static tracking_state* state = get_state();
-
-  static_mutex::scoped_lock lock(state->mutex_);
-  h.id_ = state->next_id_++;
-  lock.unlock();
-
-  handler_tracking_timestamp timestamp;
-
-  uint64_t current_id = 0;
-  if (completion* current_completion = *state->current_completion_)
-    current_id = current_completion->id_;
-
-  write_line(
-#if defined(ASIO_WINDOWS)
-      "@asio|%I64u.%06I64u|%I64u*%I64u|%.20s@%p.%.50s\n",
-#else // defined(ASIO_WINDOWS)
-      "@asio|%llu.%06llu|%llu*%llu|%.20s@%p.%.50s\n",
-#endif // defined(ASIO_WINDOWS)
-      timestamp.seconds, timestamp.microseconds,
-      current_id, h.id_, object_type, object, op_name);
-}
-
-handler_tracking::completion::completion(
-    const handler_tracking::tracked_handler& h)
-  : id_(h.id_),
-    invoked_(false),
-    next_(*get_state()->current_completion_)
-{
-  *get_state()->current_completion_ = this;
-}
-
-handler_tracking::completion::~completion()
-{
-  if (id_)
-  {
-    handler_tracking_timestamp timestamp;
-
-    write_line(
-#if defined(ASIO_WINDOWS)
-        "@asio|%I64u.%06I64u|%c%I64u|\n",
-#else // defined(ASIO_WINDOWS)
-        "@asio|%llu.%06llu|%c%llu|\n",
-#endif // defined(ASIO_WINDOWS)
-        timestamp.seconds, timestamp.microseconds,
-        invoked_ ? '!' : '~', id_);
-  }
-
-  *get_state()->current_completion_ = next_;
-}
-
-void handler_tracking::completion::invocation_begin()
-{
-  handler_tracking_timestamp timestamp;
-
-  write_line(
-#if defined(ASIO_WINDOWS)
-      "@asio|%I64u.%06I64u|>%I64u|\n",
-#else // defined(ASIO_WINDOWS)
-      "@asio|%llu.%06llu|>%llu|\n",
-#endif // defined(ASIO_WINDOWS)
-      timestamp.seconds, timestamp.microseconds, id_);
-
-  invoked_ = true;
-}
-
-void handler_tracking::completion::invocation_begin(
-    const asio::error_code& ec)
-{
-  handler_tracking_timestamp timestamp;
-
-  write_line(
-#if defined(ASIO_WINDOWS)
-      "@asio|%I64u.%06I64u|>%I64u|ec=%.20s:%d\n",
-#else // defined(ASIO_WINDOWS)
-      "@asio|%llu.%06llu|>%llu|ec=%.20s:%d\n",
-#endif // defined(ASIO_WINDOWS)
-      timestamp.seconds, timestamp.microseconds,
-      id_, ec.category().name(), ec.value());
-
-  invoked_ = true;
-}
-
-void handler_tracking::completion::invocation_begin(
-    const asio::error_code& ec, std::size_t bytes_transferred)
-{
-  handler_tracking_timestamp timestamp;
-
-  write_line(
-#if defined(ASIO_WINDOWS)
-      "@asio|%I64u.%06I64u|>%I64u|ec=%.20s:%d,bytes_transferred=%I64u\n",
-#else // defined(ASIO_WINDOWS)
-      "@asio|%llu.%06llu|>%llu|ec=%.20s:%d,bytes_transferred=%llu\n",
-#endif // defined(ASIO_WINDOWS)
-      timestamp.seconds, timestamp.microseconds,
-      id_, ec.category().name(), ec.value(),
-      static_cast<uint64_t>(bytes_transferred));
-
-  invoked_ = true;
-}
-
-void handler_tracking::completion::invocation_begin(
-    const asio::error_code& ec, int signal_number)
-{
-  handler_tracking_timestamp timestamp;
-
-  write_line(
-#if defined(ASIO_WINDOWS)
-      "@asio|%I64u.%06I64u|>%I64u|ec=%.20s:%d,signal_number=%d\n",
-#else // defined(ASIO_WINDOWS)
-      "@asio|%llu.%06llu|>%llu|ec=%.20s:%d,signal_number=%d\n",
-#endif // defined(ASIO_WINDOWS)
-      timestamp.seconds, timestamp.microseconds,
-      id_, ec.category().name(), ec.value(), signal_number);
-
-  invoked_ = true;
-}
-
-void handler_tracking::completion::invocation_begin(
-    const asio::error_code& ec, const char* arg)
-{
-  handler_tracking_timestamp timestamp;
-
-  write_line(
-#if defined(ASIO_WINDOWS)
-      "@asio|%I64u.%06I64u|>%I64u|ec=%.20s:%d,%.50s\n",
-#else // defined(ASIO_WINDOWS)
-      "@asio|%llu.%06llu|>%llu|ec=%.20s:%d,%.50s\n",
-#endif // defined(ASIO_WINDOWS)
-      timestamp.seconds, timestamp.microseconds,
-      id_, ec.category().name(), ec.value(), arg);
-
-  invoked_ = true;
-}
-
-void handler_tracking::completion::invocation_end()
-{
-  if (id_)
-  {
-    handler_tracking_timestamp timestamp;
-
-    write_line(
-#if defined(ASIO_WINDOWS)
-        "@asio|%I64u.%06I64u|<%I64u|\n",
-#else // defined(ASIO_WINDOWS)
-        "@asio|%llu.%06llu|<%llu|\n",
-#endif // defined(ASIO_WINDOWS)
-        timestamp.seconds, timestamp.microseconds, id_);
-
-    id_ = 0;
-  }
-}
-
-void handler_tracking::operation(execution_context&,
-    const char* object_type, void* object,
-    uintmax_t /*native_handle*/, const char* op_name)
-{
-  static tracking_state* state = get_state();
-
-  handler_tracking_timestamp timestamp;
-
-  unsigned long long current_id = 0;
-  if (completion* current_completion = *state->current_completion_)
-    current_id = current_completion->id_;
-
-  write_line(
-#if defined(ASIO_WINDOWS)
-      "@asio|%I64u.%06I64u|%I64u|%.20s@%p.%.50s\n",
-#else // defined(ASIO_WINDOWS)
-      "@asio|%llu.%06llu|%llu|%.20s@%p.%.50s\n",
-#endif // defined(ASIO_WINDOWS)
-      timestamp.seconds, timestamp.microseconds,
-      current_id, object_type, object, op_name);
-}
-
-void handler_tracking::reactor_registration(execution_context& /*context*/,
-    uintmax_t /*native_handle*/, uintmax_t /*registration*/)
-{
-}
-
-void handler_tracking::reactor_deregistration(execution_context& /*context*/,
-    uintmax_t /*native_handle*/, uintmax_t /*registration*/)
-{
-}
-
-void handler_tracking::reactor_events(execution_context& /*context*/,
-    uintmax_t /*native_handle*/, unsigned /*events*/)
-{
-}
-
-void handler_tracking::reactor_operation(
-    const tracked_handler& h, const char* op_name,
-    const asio::error_code& ec)
-{
-  handler_tracking_timestamp timestamp;
-
-  write_line(
-#if defined(ASIO_WINDOWS)
-      "@asio|%I64u.%06I64u|.%I64u|%s,ec=%.20s:%d\n",
-#else // defined(ASIO_WINDOWS)
-      "@asio|%llu.%06llu|.%llu|%s,ec=%.20s:%d\n",
-#endif // defined(ASIO_WINDOWS)
-      timestamp.seconds, timestamp.microseconds,
-      h.id_, op_name, ec.category().name(), ec.value());
-}
-
-void handler_tracking::reactor_operation(
-    const tracked_handler& h, const char* op_name,
-    const asio::error_code& ec, std::size_t bytes_transferred)
-{
-  handler_tracking_timestamp timestamp;
-
-  write_line(
-#if defined(ASIO_WINDOWS)
-      "@asio|%I64u.%06I64u|.%I64u|%s,ec=%.20s:%d,bytes_transferred=%I64u\n",
-#else // defined(ASIO_WINDOWS)
-      "@asio|%llu.%06llu|.%llu|%s,ec=%.20s:%d,bytes_transferred=%llu\n",
-#endif // defined(ASIO_WINDOWS)
-      timestamp.seconds, timestamp.microseconds,
-      h.id_, op_name, ec.category().name(), ec.value(),
-      static_cast<uint64_t>(bytes_transferred));
-}
-
-void handler_tracking::write_line(const char* format, ...)
-{
-  using namespace std; // For sprintf (or equivalent).
-
-  va_list args;
-  va_start(args, format);
-
-  char line[256] = "";
-#if defined(ASIO_HAS_SECURE_RTL)
-  int length = vsprintf_s(line, sizeof(line), format, args);
-#else // defined(ASIO_HAS_SECURE_RTL)
-  int length = vsprintf(line, format, args);
-#endif // defined(ASIO_HAS_SECURE_RTL)
-
-  va_end(args);
-
-#if defined(ASIO_WINDOWS_RUNTIME)
-  wchar_t wline[256] = L"";
-  mbstowcs_s(0, wline, sizeof(wline) / sizeof(wchar_t), line, length);
-  ::OutputDebugStringW(wline);
-#elif defined(ASIO_WINDOWS)
-  HANDLE stderr_handle = ::GetStdHandle(STD_ERROR_HANDLE);
-  DWORD bytes_written = 0;
-  ::WriteFile(stderr_handle, line, length, &bytes_written, 0);
-#else // defined(ASIO_WINDOWS)
-  ::write(STDERR_FILENO, line, length);
-#endif // defined(ASIO_WINDOWS)
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_ENABLE_HANDLER_TRACKING)
-
-#endif // ASIO_DETAIL_IMPL_HANDLER_TRACKING_IPP
diff --git a/lib/asio/detail/impl/kqueue_reactor.hpp b/lib/asio/detail/impl/kqueue_reactor.hpp
deleted file mode 100644
index 136d167..0000000
--- a/lib/asio/detail/impl/kqueue_reactor.hpp
+++ /dev/null
@@ -1,93 +0,0 @@
-//
-// detail/impl/kqueue_reactor.hpp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-// Copyright (c) 2005 Stefan Arentz (stefan at soze dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_KQUEUE_REACTOR_HPP
-#define ASIO_DETAIL_IMPL_KQUEUE_REACTOR_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_HAS_KQUEUE)
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-template <typename Time_Traits>
-void kqueue_reactor::add_timer_queue(timer_queue<Time_Traits>& queue)
-{
-  do_add_timer_queue(queue);
-}
-
-// Remove a timer queue from the reactor.
-template <typename Time_Traits>
-void kqueue_reactor::remove_timer_queue(timer_queue<Time_Traits>& queue)
-{
-  do_remove_timer_queue(queue);
-}
-
-template <typename Time_Traits>
-void kqueue_reactor::schedule_timer(timer_queue<Time_Traits>& queue,
-    const typename Time_Traits::time_type& time,
-    typename timer_queue<Time_Traits>::per_timer_data& timer, wait_op* op)
-{
-  mutex::scoped_lock lock(mutex_);
-
-  if (shutdown_)
-  {
-    scheduler_.post_immediate_completion(op, false);
-    return;
-  }
-
-  bool earliest = queue.enqueue_timer(time, timer, op);
-  scheduler_.work_started();
-  if (earliest)
-    interrupt();
-}
-
-template <typename Time_Traits>
-std::size_t kqueue_reactor::cancel_timer(timer_queue<Time_Traits>& queue,
-    typename timer_queue<Time_Traits>::per_timer_data& timer,
-    std::size_t max_cancelled)
-{
-  mutex::scoped_lock lock(mutex_);
-  op_queue<operation> ops;
-  std::size_t n = queue.cancel_timer(timer, ops, max_cancelled);
-  lock.unlock();
-  scheduler_.post_deferred_completions(ops);
-  return n;
-}
-
-template <typename Time_Traits>
-void kqueue_reactor::move_timer(timer_queue<Time_Traits>& queue,
-    typename timer_queue<Time_Traits>::per_timer_data& target,
-    typename timer_queue<Time_Traits>::per_timer_data& source)
-{
-  mutex::scoped_lock lock(mutex_);
-  op_queue<operation> ops;
-  queue.cancel_timer(target, ops);
-  queue.move_timer(target, source);
-  lock.unlock();
-  scheduler_.post_deferred_completions(ops);
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_HAS_KQUEUE)
-
-#endif // ASIO_DETAIL_IMPL_KQUEUE_REACTOR_HPP
diff --git a/lib/asio/detail/impl/kqueue_reactor.ipp b/lib/asio/detail/impl/kqueue_reactor.ipp
deleted file mode 100644
index 73986e0..0000000
--- a/lib/asio/detail/impl/kqueue_reactor.ipp
+++ /dev/null
@@ -1,566 +0,0 @@
-//
-// detail/impl/kqueue_reactor.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-// Copyright (c) 2005 Stefan Arentz (stefan at soze dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_KQUEUE_REACTOR_IPP
-#define ASIO_DETAIL_IMPL_KQUEUE_REACTOR_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_HAS_KQUEUE)
-
-#include "asio/detail/kqueue_reactor.hpp"
-#include "asio/detail/scheduler.hpp"
-#include "asio/detail/throw_error.hpp"
-#include "asio/error.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-#if defined(__NetBSD__)
-# define ASIO_KQUEUE_EV_SET(ev, ident, filt, flags, fflags, data, udata) \
-    EV_SET(ev, ident, filt, flags, fflags, data, \
-      reinterpret_cast<intptr_t>(static_cast<void*>(udata)))
-#else
-# define ASIO_KQUEUE_EV_SET(ev, ident, filt, flags, fflags, data, udata) \
-    EV_SET(ev, ident, filt, flags, fflags, data, udata)
-#endif
-
-namespace asio {
-namespace detail {
-
-kqueue_reactor::kqueue_reactor(asio::execution_context& ctx)
-  : execution_context_service_base<kqueue_reactor>(ctx),
-    scheduler_(use_service<scheduler>(ctx)),
-    mutex_(ASIO_CONCURRENCY_HINT_IS_LOCKING(
-          REACTOR_REGISTRATION, scheduler_.concurrency_hint())),
-    kqueue_fd_(do_kqueue_create()),
-    interrupter_(),
-    shutdown_(false),
-    registered_descriptors_mutex_(mutex_.enabled())
-{
-  struct kevent events[1];
-  ASIO_KQUEUE_EV_SET(&events[0], interrupter_.read_descriptor(),
-      EVFILT_READ, EV_ADD, 0, 0, &interrupter_);
-  if (::kevent(kqueue_fd_, events, 1, 0, 0, 0) == -1)
-  {
-    asio::error_code error(errno,
-        asio::error::get_system_category());
-    asio::detail::throw_error(error);
-  }
-}
-
-kqueue_reactor::~kqueue_reactor()
-{
-  close(kqueue_fd_);
-}
-
-void kqueue_reactor::shutdown()
-{
-  mutex::scoped_lock lock(mutex_);
-  shutdown_ = true;
-  lock.unlock();
-
-  op_queue<operation> ops;
-
-  while (descriptor_state* state = registered_descriptors_.first())
-  {
-    for (int i = 0; i < max_ops; ++i)
-      ops.push(state->op_queue_[i]);
-    state->shutdown_ = true;
-    registered_descriptors_.free(state);
-  }
-
-  timer_queues_.get_all_timers(ops);
-
-  scheduler_.abandon_operations(ops);
-}
-
-void kqueue_reactor::notify_fork(
-    asio::execution_context::fork_event fork_ev)
-{
-  if (fork_ev == asio::execution_context::fork_child)
-  {
-    // The kqueue descriptor is automatically closed in the child.
-    kqueue_fd_ = -1;
-    kqueue_fd_ = do_kqueue_create();
-
-    interrupter_.recreate();
-
-    struct kevent events[2];
-    ASIO_KQUEUE_EV_SET(&events[0], interrupter_.read_descriptor(),
-        EVFILT_READ, EV_ADD, 0, 0, &interrupter_);
-    if (::kevent(kqueue_fd_, events, 1, 0, 0, 0) == -1)
-    {
-      asio::error_code ec(errno,
-          asio::error::get_system_category());
-      asio::detail::throw_error(ec, "kqueue interrupter registration");
-    }
-
-    // Re-register all descriptors with kqueue.
-    mutex::scoped_lock descriptors_lock(registered_descriptors_mutex_);
-    for (descriptor_state* state = registered_descriptors_.first();
-        state != 0; state = state->next_)
-    {
-      if (state->num_kevents_ > 0)
-      {
-        ASIO_KQUEUE_EV_SET(&events[0], state->descriptor_,
-            EVFILT_READ, EV_ADD | EV_CLEAR, 0, 0, state);
-        ASIO_KQUEUE_EV_SET(&events[1], state->descriptor_,
-            EVFILT_WRITE, EV_ADD | EV_CLEAR, 0, 0, state);
-        if (::kevent(kqueue_fd_, events, state->num_kevents_, 0, 0, 0) == -1)
-        {
-          asio::error_code ec(errno,
-              asio::error::get_system_category());
-          asio::detail::throw_error(ec, "kqueue re-registration");
-        }
-      }
-    }
-  }
-}
-
-void kqueue_reactor::init_task()
-{
-  scheduler_.init_task();
-}
-
-int kqueue_reactor::register_descriptor(socket_type descriptor,
-    kqueue_reactor::per_descriptor_data& descriptor_data)
-{
-  descriptor_data = allocate_descriptor_state();
-
-  ASIO_HANDLER_REACTOR_REGISTRATION((
-        context(), static_cast<uintmax_t>(descriptor),
-        reinterpret_cast<uintmax_t>(descriptor_data)));
-
-  mutex::scoped_lock lock(descriptor_data->mutex_);
-
-  descriptor_data->descriptor_ = descriptor;
-  descriptor_data->num_kevents_ = 0;
-  descriptor_data->shutdown_ = false;
-
-  return 0;
-}
-
-int kqueue_reactor::register_internal_descriptor(
-    int op_type, socket_type descriptor,
-    kqueue_reactor::per_descriptor_data& descriptor_data, reactor_op* op)
-{
-  descriptor_data = allocate_descriptor_state();
-
-  ASIO_HANDLER_REACTOR_REGISTRATION((
-        context(), static_cast<uintmax_t>(descriptor),
-        reinterpret_cast<uintmax_t>(descriptor_data)));
-
-  mutex::scoped_lock lock(descriptor_data->mutex_);
-
-  descriptor_data->descriptor_ = descriptor;
-  descriptor_data->num_kevents_ = 1;
-  descriptor_data->shutdown_ = false;
-  descriptor_data->op_queue_[op_type].push(op);
-
-  struct kevent events[1];
-  ASIO_KQUEUE_EV_SET(&events[0], descriptor, EVFILT_READ,
-      EV_ADD | EV_CLEAR, 0, 0, descriptor_data);
-  if (::kevent(kqueue_fd_, events, 1, 0, 0, 0) == -1)
-    return errno;
-
-  return 0;
-}
-
-void kqueue_reactor::move_descriptor(socket_type,
-    kqueue_reactor::per_descriptor_data& target_descriptor_data,
-    kqueue_reactor::per_descriptor_data& source_descriptor_data)
-{
-  target_descriptor_data = source_descriptor_data;
-  source_descriptor_data = 0;
-}
-
-void kqueue_reactor::start_op(int op_type, socket_type descriptor,
-    kqueue_reactor::per_descriptor_data& descriptor_data, reactor_op* op,
-    bool is_continuation, bool allow_speculative)
-{
-  if (!descriptor_data)
-  {
-    op->ec_ = asio::error::bad_descriptor;
-    post_immediate_completion(op, is_continuation);
-    return;
-  }
-
-  mutex::scoped_lock descriptor_lock(descriptor_data->mutex_);
-
-  if (descriptor_data->shutdown_)
-  {
-    post_immediate_completion(op, is_continuation);
-    return;
-  }
-
-  if (descriptor_data->op_queue_[op_type].empty())
-  {
-    static const int num_kevents[max_ops] = { 1, 2, 1 };
-
-    if (allow_speculative
-        && (op_type != read_op
-          || descriptor_data->op_queue_[except_op].empty()))
-    {
-      if (op->perform())
-      {
-        descriptor_lock.unlock();
-        scheduler_.post_immediate_completion(op, is_continuation);
-        return;
-      }
-
-      if (descriptor_data->num_kevents_ < num_kevents[op_type])
-      {
-        struct kevent events[2];
-        ASIO_KQUEUE_EV_SET(&events[0], descriptor, EVFILT_READ,
-            EV_ADD | EV_CLEAR, 0, 0, descriptor_data);
-        ASIO_KQUEUE_EV_SET(&events[1], descriptor, EVFILT_WRITE,
-            EV_ADD | EV_CLEAR, 0, 0, descriptor_data);
-        if (::kevent(kqueue_fd_, events, num_kevents[op_type], 0, 0, 0) != -1)
-        {
-          descriptor_data->num_kevents_ = num_kevents[op_type];
-        }
-        else
-        {
-          op->ec_ = asio::error_code(errno,
-              asio::error::get_system_category());
-          scheduler_.post_immediate_completion(op, is_continuation);
-          return;
-        }
-      }
-    }
-    else
-    {
-      if (descriptor_data->num_kevents_ < num_kevents[op_type])
-        descriptor_data->num_kevents_ = num_kevents[op_type];
-
-      struct kevent events[2];
-      ASIO_KQUEUE_EV_SET(&events[0], descriptor, EVFILT_READ,
-          EV_ADD | EV_CLEAR, 0, 0, descriptor_data);
-      ASIO_KQUEUE_EV_SET(&events[1], descriptor, EVFILT_WRITE,
-          EV_ADD | EV_CLEAR, 0, 0, descriptor_data);
-      ::kevent(kqueue_fd_, events, descriptor_data->num_kevents_, 0, 0, 0);
-    }
-  }
-
-  descriptor_data->op_queue_[op_type].push(op);
-  scheduler_.work_started();
-}
-
-void kqueue_reactor::cancel_ops(socket_type,
-    kqueue_reactor::per_descriptor_data& descriptor_data)
-{
-  if (!descriptor_data)
-    return;
-
-  mutex::scoped_lock descriptor_lock(descriptor_data->mutex_);
-
-  op_queue<operation> ops;
-  for (int i = 0; i < max_ops; ++i)
-  {
-    while (reactor_op* op = descriptor_data->op_queue_[i].front())
-    {
-      op->ec_ = asio::error::operation_aborted;
-      descriptor_data->op_queue_[i].pop();
-      ops.push(op);
-    }
-  }
-
-  descriptor_lock.unlock();
-
-  scheduler_.post_deferred_completions(ops);
-}
-
-void kqueue_reactor::deregister_descriptor(socket_type descriptor,
-    kqueue_reactor::per_descriptor_data& descriptor_data, bool closing)
-{
-  if (!descriptor_data)
-    return;
-
-  mutex::scoped_lock descriptor_lock(descriptor_data->mutex_);
-
-  if (!descriptor_data->shutdown_)
-  {
-    if (closing)
-    {
-      // The descriptor will be automatically removed from the kqueue when it
-      // is closed.
-    }
-    else
-    {
-      struct kevent events[2];
-      ASIO_KQUEUE_EV_SET(&events[0], descriptor,
-          EVFILT_READ, EV_DELETE, 0, 0, 0);
-      ASIO_KQUEUE_EV_SET(&events[1], descriptor,
-          EVFILT_WRITE, EV_DELETE, 0, 0, 0);
-      ::kevent(kqueue_fd_, events, descriptor_data->num_kevents_, 0, 0, 0);
-    }
-
-    op_queue<operation> ops;
-    for (int i = 0; i < max_ops; ++i)
-    {
-      while (reactor_op* op = descriptor_data->op_queue_[i].front())
-      {
-        op->ec_ = asio::error::operation_aborted;
-        descriptor_data->op_queue_[i].pop();
-        ops.push(op);
-      }
-    }
-
-    descriptor_data->descriptor_ = -1;
-    descriptor_data->shutdown_ = true;
-
-    descriptor_lock.unlock();
-
-    ASIO_HANDLER_REACTOR_DEREGISTRATION((
-          context(), static_cast<uintmax_t>(descriptor),
-          reinterpret_cast<uintmax_t>(descriptor_data)));
-
-    scheduler_.post_deferred_completions(ops);
-
-    // Leave descriptor_data set so that it will be freed by the subsequent
-    // call to cleanup_descriptor_data.
-  }
-  else
-  {
-    // We are shutting down, so prevent cleanup_descriptor_data from freeing
-    // the descriptor_data object and let the destructor free it instead.
-    descriptor_data = 0;
-  }
-}
-
-void kqueue_reactor::deregister_internal_descriptor(socket_type descriptor,
-    kqueue_reactor::per_descriptor_data& descriptor_data)
-{
-  if (!descriptor_data)
-    return;
-
-  mutex::scoped_lock descriptor_lock(descriptor_data->mutex_);
-
-  if (!descriptor_data->shutdown_)
-  {
-    struct kevent events[2];
-    ASIO_KQUEUE_EV_SET(&events[0], descriptor,
-        EVFILT_READ, EV_DELETE, 0, 0, 0);
-    ASIO_KQUEUE_EV_SET(&events[1], descriptor,
-        EVFILT_WRITE, EV_DELETE, 0, 0, 0);
-    ::kevent(kqueue_fd_, events, descriptor_data->num_kevents_, 0, 0, 0);
-
-    op_queue<operation> ops;
-    for (int i = 0; i < max_ops; ++i)
-      ops.push(descriptor_data->op_queue_[i]);
-
-    descriptor_data->descriptor_ = -1;
-    descriptor_data->shutdown_ = true;
-
-    descriptor_lock.unlock();
-
-    ASIO_HANDLER_REACTOR_DEREGISTRATION((
-          context(), static_cast<uintmax_t>(descriptor),
-          reinterpret_cast<uintmax_t>(descriptor_data)));
-
-    // Leave descriptor_data set so that it will be freed by the subsequent
-    // call to cleanup_descriptor_data.
-  }
-  else
-  {
-    // We are shutting down, so prevent cleanup_descriptor_data from freeing
-    // the descriptor_data object and let the destructor free it instead.
-    descriptor_data = 0;
-  }
-}
-
-void kqueue_reactor::cleanup_descriptor_data(
-    per_descriptor_data& descriptor_data)
-{
-  if (descriptor_data)
-  {
-    free_descriptor_state(descriptor_data);
-    descriptor_data = 0;
-  }
-}
-
-void kqueue_reactor::run(long usec, op_queue<operation>& ops)
-{
-  mutex::scoped_lock lock(mutex_);
-
-  // Determine how long to block while waiting for events.
-  timespec timeout_buf = { 0, 0 };
-  timespec* timeout = usec ? get_timeout(usec, timeout_buf) : &timeout_buf;
-
-  lock.unlock();
-
-  // Block on the kqueue descriptor.
-  struct kevent events[128];
-  int num_events = kevent(kqueue_fd_, 0, 0, events, 128, timeout);
-
-#if defined(ASIO_ENABLE_HANDLER_TRACKING)
-  // Trace the waiting events.
-  for (int i = 0; i < num_events; ++i)
-  {
-    void* ptr = reinterpret_cast<void*>(events[i].udata);
-    if (ptr != &interrupter_)
-    {
-      unsigned event_mask = 0;
-      switch (events[i].filter)
-      {
-      case EVFILT_READ:
-        event_mask |= ASIO_HANDLER_REACTOR_READ_EVENT;
-        break;
-      case EVFILT_WRITE:
-        event_mask |= ASIO_HANDLER_REACTOR_WRITE_EVENT;
-        break;
-      }
-      if ((events[i].flags & (EV_ERROR | EV_OOBAND)) != 0)
-        event_mask |= ASIO_HANDLER_REACTOR_ERROR_EVENT;
-      ASIO_HANDLER_REACTOR_EVENTS((context(),
-            reinterpret_cast<uintmax_t>(ptr), event_mask));
-    }
-  }
-#endif // defined(ASIO_ENABLE_HANDLER_TRACKING)
-
-  // Dispatch the waiting events.
-  for (int i = 0; i < num_events; ++i)
-  {
-    void* ptr = reinterpret_cast<void*>(events[i].udata);
-    if (ptr == &interrupter_)
-    {
-      interrupter_.reset();
-    }
-    else
-    {
-      descriptor_state* descriptor_data = static_cast<descriptor_state*>(ptr);
-      mutex::scoped_lock descriptor_lock(descriptor_data->mutex_);
-
-      if (events[i].filter == EVFILT_WRITE
-          && descriptor_data->num_kevents_ == 2
-          && descriptor_data->op_queue_[write_op].empty())
-      {
-        // Some descriptor types, like serial ports, don't seem to support
-        // EV_CLEAR with EVFILT_WRITE. Since we have no pending write
-        // operations we'll remove the EVFILT_WRITE registration here so that
-        // we don't end up in a tight spin.
-        struct kevent delete_events[1];
-        ASIO_KQUEUE_EV_SET(&delete_events[0],
-            descriptor_data->descriptor_, EVFILT_WRITE, EV_DELETE, 0, 0, 0);
-        ::kevent(kqueue_fd_, delete_events, 1, 0, 0, 0);
-        descriptor_data->num_kevents_ = 1;
-      }
-
-      // Exception operations must be processed first to ensure that any
-      // out-of-band data is read before normal data.
-#if defined(__NetBSD__)
-      static const unsigned int filter[max_ops] =
-#else
-      static const int filter[max_ops] =
-#endif
-        { EVFILT_READ, EVFILT_WRITE, EVFILT_READ };
-      for (int j = max_ops - 1; j >= 0; --j)
-      {
-        if (events[i].filter == filter[j])
-        {
-          if (j != except_op || events[i].flags & EV_OOBAND)
-          {
-            while (reactor_op* op = descriptor_data->op_queue_[j].front())
-            {
-              if (events[i].flags & EV_ERROR)
-              {
-                op->ec_ = asio::error_code(
-                    static_cast<int>(events[i].data),
-                    asio::error::get_system_category());
-                descriptor_data->op_queue_[j].pop();
-                ops.push(op);
-              }
-              if (op->perform())
-              {
-                descriptor_data->op_queue_[j].pop();
-                ops.push(op);
-              }
-              else
-                break;
-            }
-          }
-        }
-      }
-    }
-  }
-
-  lock.lock();
-  timer_queues_.get_ready_timers(ops);
-}
-
-void kqueue_reactor::interrupt()
-{
-  interrupter_.interrupt();
-}
-
-int kqueue_reactor::do_kqueue_create()
-{
-  int fd = ::kqueue();
-  if (fd == -1)
-  {
-    asio::error_code ec(errno,
-        asio::error::get_system_category());
-    asio::detail::throw_error(ec, "kqueue");
-  }
-  return fd;
-}
-
-kqueue_reactor::descriptor_state* kqueue_reactor::allocate_descriptor_state()
-{
-  mutex::scoped_lock descriptors_lock(registered_descriptors_mutex_);
-  return registered_descriptors_.alloc(ASIO_CONCURRENCY_HINT_IS_LOCKING(
-        REACTOR_IO, scheduler_.concurrency_hint()));
-}
-
-void kqueue_reactor::free_descriptor_state(kqueue_reactor::descriptor_state* s)
-{
-  mutex::scoped_lock descriptors_lock(registered_descriptors_mutex_);
-  registered_descriptors_.free(s);
-}
-
-void kqueue_reactor::do_add_timer_queue(timer_queue_base& queue)
-{
-  mutex::scoped_lock lock(mutex_);
-  timer_queues_.insert(&queue);
-}
-
-void kqueue_reactor::do_remove_timer_queue(timer_queue_base& queue)
-{
-  mutex::scoped_lock lock(mutex_);
-  timer_queues_.erase(&queue);
-}
-
-timespec* kqueue_reactor::get_timeout(long usec, timespec& ts)
-{
-  // By default we will wait no longer than 5 minutes. This will ensure that
-  // any changes to the system clock are detected after no longer than this.
-  const long max_usec = 5 * 60 * 1000 * 1000;
-  usec = timer_queues_.wait_duration_usec(
-      (usec < 0 || max_usec < usec) ? max_usec : usec);
-  ts.tv_sec = usec / 1000000;
-  ts.tv_nsec = (usec % 1000000) * 1000;
-  return &ts;
-}
-
-} // namespace detail
-} // namespace asio
-
-#undef ASIO_KQUEUE_EV_SET
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_HAS_KQUEUE)
-
-#endif // ASIO_DETAIL_IMPL_KQUEUE_REACTOR_IPP
diff --git a/lib/asio/detail/impl/null_event.ipp b/lib/asio/detail/impl/null_event.ipp
deleted file mode 100644
index 22ade40..0000000
--- a/lib/asio/detail/impl/null_event.ipp
+++ /dev/null
@@ -1,74 +0,0 @@
-//
-// detail/impl/null_event.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_NULL_EVENT_IPP
-#define ASIO_DETAIL_IMPL_NULL_EVENT_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_WINDOWS_RUNTIME)
-# include <thread>
-#elif defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-# include "asio/detail/socket_types.hpp"
-#else
-# include <unistd.h>
-# if defined(__hpux)
-#  include <sys/time.h>
-# endif
-# if !defined(__hpux) || defined(__SELECT)
-#  include <sys/select.h>
-# endif
-#endif
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-void null_event::do_wait()
-{
-#if defined(ASIO_WINDOWS_RUNTIME)
-  std::this_thread::sleep_until((std::chrono::steady_clock::time_point::max)());
-#elif defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  ::Sleep(INFINITE);
-#else
-  ::pause();
-#endif
-}
-
-void null_event::do_wait_for_usec(long usec)
-{
-#if defined(ASIO_WINDOWS_RUNTIME)
-  std::this_thread::sleep_for(std::chrono::microseconds(usec));
-#elif defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  ::Sleep(usec / 1000);
-#elif defined(__hpux) && defined(__SELECT)
-  timespec ts;
-  ts.tv_sec = usec / 1000000;
-  ts.tv_nsec = (usec % 1000000) * 1000;
-  ::pselect(0, 0, 0, 0, &ts, 0);
-#else
-  timeval tv;
-  tv.tv_sec = usec / 1000000;
-  tv.tv_usec = usec % 1000000;
-  ::select(0, 0, 0, 0, &tv);
-#endif
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_DETAIL_IMPL_NULL_EVENT_IPP
diff --git a/lib/asio/detail/impl/pipe_select_interrupter.ipp b/lib/asio/detail/impl/pipe_select_interrupter.ipp
deleted file mode 100644
index 13931ab..0000000
--- a/lib/asio/detail/impl/pipe_select_interrupter.ipp
+++ /dev/null
@@ -1,124 +0,0 @@
-//
-// detail/impl/pipe_select_interrupter.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_PIPE_SELECT_INTERRUPTER_IPP
-#define ASIO_DETAIL_IMPL_PIPE_SELECT_INTERRUPTER_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if !defined(ASIO_WINDOWS_RUNTIME)
-#if !defined(ASIO_WINDOWS)
-#if !defined(__CYGWIN__)
-#if !defined(__SYMBIAN32__)
-#if !defined(ASIO_HAS_EVENTFD)
-
-#include <fcntl.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <unistd.h>
-#include "asio/detail/pipe_select_interrupter.hpp"
-#include "asio/detail/socket_types.hpp"
-#include "asio/detail/throw_error.hpp"
-#include "asio/error.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-pipe_select_interrupter::pipe_select_interrupter()
-{
-  open_descriptors();
-}
-
-void pipe_select_interrupter::open_descriptors()
-{
-  int pipe_fds[2];
-  if (pipe(pipe_fds) == 0)
-  {
-    read_descriptor_ = pipe_fds[0];
-    ::fcntl(read_descriptor_, F_SETFL, O_NONBLOCK);
-    write_descriptor_ = pipe_fds[1];
-    ::fcntl(write_descriptor_, F_SETFL, O_NONBLOCK);
-
-#if defined(FD_CLOEXEC)
-    ::fcntl(read_descriptor_, F_SETFD, FD_CLOEXEC);
-    ::fcntl(write_descriptor_, F_SETFD, FD_CLOEXEC);
-#endif // defined(FD_CLOEXEC)
-  }
-  else
-  {
-    asio::error_code ec(errno,
-        asio::error::get_system_category());
-    asio::detail::throw_error(ec, "pipe_select_interrupter");
-  }
-}
-
-pipe_select_interrupter::~pipe_select_interrupter()
-{
-  close_descriptors();
-}
-
-void pipe_select_interrupter::close_descriptors()
-{
-  if (read_descriptor_ != -1)
-    ::close(read_descriptor_);
-  if (write_descriptor_ != -1)
-    ::close(write_descriptor_);
-}
-
-void pipe_select_interrupter::recreate()
-{
-  close_descriptors();
-
-  write_descriptor_ = -1;
-  read_descriptor_ = -1;
-
-  open_descriptors();
-}
-
-void pipe_select_interrupter::interrupt()
-{
-  char byte = 0;
-  signed_size_type result = ::write(write_descriptor_, &byte, 1);
-  (void)result;
-}
-
-bool pipe_select_interrupter::reset()
-{
-  for (;;)
-  {
-    char data[1024];
-    signed_size_type bytes_read = ::read(read_descriptor_, data, sizeof(data));
-    if (bytes_read < 0 && errno == EINTR)
-      continue;
-    bool was_interrupted = (bytes_read > 0);
-    while (bytes_read == sizeof(data))
-      bytes_read = ::read(read_descriptor_, data, sizeof(data));
-    return was_interrupted;
-  }
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // !defined(ASIO_HAS_EVENTFD)
-#endif // !defined(__SYMBIAN32__)
-#endif // !defined(__CYGWIN__)
-#endif // !defined(ASIO_WINDOWS)
-#endif // !defined(ASIO_WINDOWS_RUNTIME)
-
-#endif // ASIO_DETAIL_IMPL_PIPE_SELECT_INTERRUPTER_IPP
diff --git a/lib/asio/detail/impl/posix_event.ipp b/lib/asio/detail/impl/posix_event.ipp
deleted file mode 100644
index 4b46ab0..0000000
--- a/lib/asio/detail/impl/posix_event.ipp
+++ /dev/null
@@ -1,59 +0,0 @@
-//
-// detail/impl/posix_event.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_POSIX_EVENT_IPP
-#define ASIO_DETAIL_IMPL_POSIX_EVENT_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_HAS_PTHREADS)
-
-#include "asio/detail/posix_event.hpp"
-#include "asio/detail/throw_error.hpp"
-#include "asio/error.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-posix_event::posix_event()
-  : state_(0)
-{
-#if (defined(__MACH__) && defined(__APPLE__)) \
-      || (defined(__ANDROID__) && (__ANDROID_API__ < 21))
-  int error = ::pthread_cond_init(&cond_, 0);
-#else // (defined(__MACH__) && defined(__APPLE__))
-      // || (defined(__ANDROID__) && (__ANDROID_API__ < 21))
-  ::pthread_condattr_t attr;
-  ::pthread_condattr_init(&attr);
-  int error = ::pthread_condattr_setclock(&attr, CLOCK_MONOTONIC);
-  if (error == 0)
-    error = ::pthread_cond_init(&cond_, &attr);
-#endif // (defined(__MACH__) && defined(__APPLE__))
-       // || (defined(__ANDROID__) && (__ANDROID_API__ < 21))
-
-  asio::error_code ec(error,
-      asio::error::get_system_category());
-  asio::detail::throw_error(ec, "event");
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_HAS_PTHREADS)
-
-#endif // ASIO_DETAIL_IMPL_POSIX_EVENT_IPP
diff --git a/lib/asio/detail/impl/posix_mutex.ipp b/lib/asio/detail/impl/posix_mutex.ipp
deleted file mode 100644
index 27272b5..0000000
--- a/lib/asio/detail/impl/posix_mutex.ipp
+++ /dev/null
@@ -1,46 +0,0 @@
-//
-// detail/impl/posix_mutex.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_POSIX_MUTEX_IPP
-#define ASIO_DETAIL_IMPL_POSIX_MUTEX_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_HAS_PTHREADS)
-
-#include "asio/detail/posix_mutex.hpp"
-#include "asio/detail/throw_error.hpp"
-#include "asio/error.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-posix_mutex::posix_mutex()
-{
-  int error = ::pthread_mutex_init(&mutex_, 0);
-  asio::error_code ec(error,
-      asio::error::get_system_category());
-  asio::detail::throw_error(ec, "mutex");
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_HAS_PTHREADS)
-
-#endif // ASIO_DETAIL_IMPL_POSIX_MUTEX_IPP
diff --git a/lib/asio/detail/impl/posix_thread.ipp b/lib/asio/detail/impl/posix_thread.ipp
deleted file mode 100644
index 69bd16f..0000000
--- a/lib/asio/detail/impl/posix_thread.ipp
+++ /dev/null
@@ -1,84 +0,0 @@
-//
-// detail/impl/posix_thread.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_POSIX_THREAD_IPP
-#define ASIO_DETAIL_IMPL_POSIX_THREAD_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_HAS_PTHREADS)
-
-#include "asio/detail/posix_thread.hpp"
-#include "asio/detail/throw_error.hpp"
-#include "asio/error.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-posix_thread::~posix_thread()
-{
-  if (!joined_)
-    ::pthread_detach(thread_);
-}
-
-void posix_thread::join()
-{
-  if (!joined_)
-  {
-    ::pthread_join(thread_, 0);
-    joined_ = true;
-  }
-}
-
-std::size_t posix_thread::hardware_concurrency()
-{
-#if defined(_SC_NPROCESSORS_ONLN)
-  long result = sysconf(_SC_NPROCESSORS_ONLN);
-  if (result > 0)
-    return result;
-#endif // defined(_SC_NPROCESSORS_ONLN)
-  return 0;
-}
-
-void posix_thread::start_thread(func_base* arg)
-{
-  int error = ::pthread_create(&thread_, 0,
-        asio_detail_posix_thread_function, arg);
-  if (error != 0)
-  {
-    delete arg;
-    asio::error_code ec(error,
-        asio::error::get_system_category());
-    asio::detail::throw_error(ec, "thread");
-  }
-}
-
-void* asio_detail_posix_thread_function(void* arg)
-{
-  posix_thread::auto_func_base_ptr func = {
-      static_cast<posix_thread::func_base*>(arg) };
-  func.ptr->run();
-  return 0;
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_HAS_PTHREADS)
-
-#endif // ASIO_DETAIL_IMPL_POSIX_THREAD_IPP
diff --git a/lib/asio/detail/impl/posix_tss_ptr.ipp b/lib/asio/detail/impl/posix_tss_ptr.ipp
deleted file mode 100644
index 54b58bd..0000000
--- a/lib/asio/detail/impl/posix_tss_ptr.ipp
+++ /dev/null
@@ -1,46 +0,0 @@
-//
-// detail/impl/posix_tss_ptr.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_POSIX_TSS_PTR_IPP
-#define ASIO_DETAIL_IMPL_POSIX_TSS_PTR_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_HAS_PTHREADS)
-
-#include "asio/detail/posix_tss_ptr.hpp"
-#include "asio/detail/throw_error.hpp"
-#include "asio/error.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-void posix_tss_ptr_create(pthread_key_t& key)
-{
-  int error = ::pthread_key_create(&key, 0);
-  asio::error_code ec(error,
-      asio::error::get_system_category());
-  asio::detail::throw_error(ec, "tss");
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_HAS_PTHREADS)
-
-#endif // ASIO_DETAIL_IMPL_POSIX_TSS_PTR_IPP
diff --git a/lib/asio/detail/impl/reactive_descriptor_service.ipp b/lib/asio/detail/impl/reactive_descriptor_service.ipp
deleted file mode 100644
index f9505ca..0000000
--- a/lib/asio/detail/impl/reactive_descriptor_service.ipp
+++ /dev/null
@@ -1,222 +0,0 @@
-//
-// detail/impl/reactive_descriptor_service.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_REACTIVE_DESCRIPTOR_SERVICE_IPP
-#define ASIO_DETAIL_IMPL_REACTIVE_DESCRIPTOR_SERVICE_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if !defined(ASIO_WINDOWS) \
-  && !defined(ASIO_WINDOWS_RUNTIME) \
-  && !defined(__CYGWIN__)
-
-#include "asio/error.hpp"
-#include "asio/detail/reactive_descriptor_service.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-reactive_descriptor_service::reactive_descriptor_service(
-    asio::io_context& io_context)
-  : service_base<reactive_descriptor_service>(io_context),
-    reactor_(asio::use_service<reactor>(io_context))
-{
-  reactor_.init_task();
-}
-
-void reactive_descriptor_service::shutdown()
-{
-}
-
-void reactive_descriptor_service::construct(
-    reactive_descriptor_service::implementation_type& impl)
-{
-  impl.descriptor_ = -1;
-  impl.state_ = 0;
-}
-
-void reactive_descriptor_service::move_construct(
-    reactive_descriptor_service::implementation_type& impl,
-    reactive_descriptor_service::implementation_type& other_impl)
-{
-  impl.descriptor_ = other_impl.descriptor_;
-  other_impl.descriptor_ = -1;
-
-  impl.state_ = other_impl.state_;
-  other_impl.state_ = 0;
-
-  reactor_.move_descriptor(impl.descriptor_,
-      impl.reactor_data_, other_impl.reactor_data_);
-}
-
-void reactive_descriptor_service::move_assign(
-    reactive_descriptor_service::implementation_type& impl,
-    reactive_descriptor_service& other_service,
-    reactive_descriptor_service::implementation_type& other_impl)
-{
-  destroy(impl);
-
-  impl.descriptor_ = other_impl.descriptor_;
-  other_impl.descriptor_ = -1;
-
-  impl.state_ = other_impl.state_;
-  other_impl.state_ = 0;
-
-  other_service.reactor_.move_descriptor(impl.descriptor_,
-      impl.reactor_data_, other_impl.reactor_data_);
-}
-
-void reactive_descriptor_service::destroy(
-    reactive_descriptor_service::implementation_type& impl)
-{
-  if (is_open(impl))
-  {
-    ASIO_HANDLER_OPERATION((reactor_.context(),
-          "descriptor", &impl, impl.descriptor_, "close"));
-
-    reactor_.deregister_descriptor(impl.descriptor_, impl.reactor_data_,
-        (impl.state_ & descriptor_ops::possible_dup) == 0);
-
-    asio::error_code ignored_ec;
-    descriptor_ops::close(impl.descriptor_, impl.state_, ignored_ec);
-
-    reactor_.cleanup_descriptor_data(impl.reactor_data_);
-  }
-}
-
-asio::error_code reactive_descriptor_service::assign(
-    reactive_descriptor_service::implementation_type& impl,
-    const native_handle_type& native_descriptor, asio::error_code& ec)
-{
-  if (is_open(impl))
-  {
-    ec = asio::error::already_open;
-    return ec;
-  }
-
-  if (int err = reactor_.register_descriptor(
-        native_descriptor, impl.reactor_data_))
-  {
-    ec = asio::error_code(err,
-        asio::error::get_system_category());
-    return ec;
-  }
-
-  impl.descriptor_ = native_descriptor;
-  impl.state_ = descriptor_ops::possible_dup;
-  ec = asio::error_code();
-  return ec;
-}
-
-asio::error_code reactive_descriptor_service::close(
-    reactive_descriptor_service::implementation_type& impl,
-    asio::error_code& ec)
-{
-  if (is_open(impl))
-  {
-    ASIO_HANDLER_OPERATION((reactor_.context(),
-          "descriptor", &impl, impl.descriptor_, "close"));
-
-    reactor_.deregister_descriptor(impl.descriptor_, impl.reactor_data_,
-        (impl.state_ & descriptor_ops::possible_dup) == 0);
-
-    descriptor_ops::close(impl.descriptor_, impl.state_, ec);
-
-    reactor_.cleanup_descriptor_data(impl.reactor_data_);
-  }
-  else
-  {
-    ec = asio::error_code();
-  }
-
-  // The descriptor is closed by the OS even if close() returns an error.
-  //
-  // (Actually, POSIX says the state of the descriptor is unspecified. On
-  // Linux the descriptor is apparently closed anyway; e.g. see
-  //   http://lkml.org/lkml/2005/9/10/129
-  // We'll just have to assume that other OSes follow the same behaviour.)
-  construct(impl);
-
-  return ec;
-}
-
-reactive_descriptor_service::native_handle_type
-reactive_descriptor_service::release(
-    reactive_descriptor_service::implementation_type& impl)
-{
-  native_handle_type descriptor = impl.descriptor_;
-
-  if (is_open(impl))
-  {
-    ASIO_HANDLER_OPERATION((reactor_.context(),
-          "descriptor", &impl, impl.descriptor_, "release"));
-
-    reactor_.deregister_descriptor(impl.descriptor_, impl.reactor_data_, false);
-    reactor_.cleanup_descriptor_data(impl.reactor_data_);
-    construct(impl);
-  }
-
-  return descriptor;
-}
-
-asio::error_code reactive_descriptor_service::cancel(
-    reactive_descriptor_service::implementation_type& impl,
-    asio::error_code& ec)
-{
-  if (!is_open(impl))
-  {
-    ec = asio::error::bad_descriptor;
-    return ec;
-  }
-
-  ASIO_HANDLER_OPERATION((reactor_.context(),
-        "descriptor", &impl, impl.descriptor_, "cancel"));
-
-  reactor_.cancel_ops(impl.descriptor_, impl.reactor_data_);
-  ec = asio::error_code();
-  return ec;
-}
-
-void reactive_descriptor_service::start_op(
-    reactive_descriptor_service::implementation_type& impl,
-    int op_type, reactor_op* op, bool is_continuation,
-    bool is_non_blocking, bool noop)
-{
-  if (!noop)
-  {
-    if ((impl.state_ & descriptor_ops::non_blocking) ||
-        descriptor_ops::set_internal_non_blocking(
-          impl.descriptor_, impl.state_, true, op->ec_))
-    {
-      reactor_.start_op(op_type, impl.descriptor_,
-          impl.reactor_data_, op, is_continuation, is_non_blocking);
-      return;
-    }
-  }
-
-  reactor_.post_immediate_completion(op, is_continuation);
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // !defined(ASIO_WINDOWS)
-       //   && !defined(ASIO_WINDOWS_RUNTIME)
-       //   && !defined(__CYGWIN__)
-
-#endif // ASIO_DETAIL_IMPL_REACTIVE_DESCRIPTOR_SERVICE_IPP
diff --git a/lib/asio/detail/impl/reactive_serial_port_service.ipp b/lib/asio/detail/impl/reactive_serial_port_service.ipp
deleted file mode 100644
index c907835..0000000
--- a/lib/asio/detail/impl/reactive_serial_port_service.ipp
+++ /dev/null
@@ -1,152 +0,0 @@
-//
-// detail/impl/reactive_serial_port_service.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-// Copyright (c) 2008 Rep Invariant Systems, Inc. (info@repinvariant.com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_REACTIVE_SERIAL_PORT_SERVICE_IPP
-#define ASIO_DETAIL_IMPL_REACTIVE_SERIAL_PORT_SERVICE_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_HAS_SERIAL_PORT)
-#if !defined(ASIO_WINDOWS) && !defined(__CYGWIN__)
-
-#include <cstring>
-#include "asio/detail/reactive_serial_port_service.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-reactive_serial_port_service::reactive_serial_port_service(
-    asio::io_context& io_context)
-  : service_base<reactive_serial_port_service>(io_context),
-    descriptor_service_(io_context)
-{
-}
-
-void reactive_serial_port_service::shutdown()
-{
-  descriptor_service_.shutdown();
-}
-
-asio::error_code reactive_serial_port_service::open(
-    reactive_serial_port_service::implementation_type& impl,
-    const std::string& device, asio::error_code& ec)
-{
-  if (is_open(impl))
-  {
-    ec = asio::error::already_open;
-    return ec;
-  }
-
-  descriptor_ops::state_type state = 0;
-  int fd = descriptor_ops::open(device.c_str(),
-      O_RDWR | O_NONBLOCK | O_NOCTTY, ec);
-  if (fd < 0)
-    return ec;
-
-  int s = descriptor_ops::fcntl(fd, F_GETFL, ec);
-  if (s >= 0)
-    s = descriptor_ops::fcntl(fd, F_SETFL, s | O_NONBLOCK, ec);
-  if (s < 0)
-  {
-    asio::error_code ignored_ec;
-    descriptor_ops::close(fd, state, ignored_ec);
-    return ec;
-  }
-
-  // Set up default serial port options.
-  termios ios;
-  errno = 0;
-  s = descriptor_ops::error_wrapper(::tcgetattr(fd, &ios), ec);
-  if (s >= 0)
-  {
-#if defined(_BSD_SOURCE) || defined(_DEFAULT_SOURCE)
-    ::cfmakeraw(&ios);
-#else
-    ios.c_iflag &= ~(IGNBRK | BRKINT | PARMRK
-        | ISTRIP | INLCR | IGNCR | ICRNL | IXON);
-    ios.c_oflag &= ~OPOST;
-    ios.c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
-    ios.c_cflag &= ~(CSIZE | PARENB);
-    ios.c_cflag |= CS8;
-#endif
-    ios.c_iflag |= IGNPAR;
-    ios.c_cflag |= CREAD | CLOCAL;
-    errno = 0;
-    s = descriptor_ops::error_wrapper(::tcsetattr(fd, TCSANOW, &ios), ec);
-  }
-  if (s < 0)
-  {
-    asio::error_code ignored_ec;
-    descriptor_ops::close(fd, state, ignored_ec);
-    return ec;
-  }
-
-  // We're done. Take ownership of the serial port descriptor.
-  if (descriptor_service_.assign(impl, fd, ec))
-  {
-    asio::error_code ignored_ec;
-    descriptor_ops::close(fd, state, ignored_ec);
-  }
-
-  return ec;
-}
-
-asio::error_code reactive_serial_port_service::do_set_option(
-    reactive_serial_port_service::implementation_type& impl,
-    reactive_serial_port_service::store_function_type store,
-    const void* option, asio::error_code& ec)
-{
-  termios ios;
-  errno = 0;
-  descriptor_ops::error_wrapper(::tcgetattr(
-        descriptor_service_.native_handle(impl), &ios), ec);
-  if (ec)
-    return ec;
-
-  if (store(option, ios, ec))
-    return ec;
-
-  errno = 0;
-  descriptor_ops::error_wrapper(::tcsetattr(
-        descriptor_service_.native_handle(impl), TCSANOW, &ios), ec);
-  return ec;
-}
-
-asio::error_code reactive_serial_port_service::do_get_option(
-    const reactive_serial_port_service::implementation_type& impl,
-    reactive_serial_port_service::load_function_type load,
-    void* option, asio::error_code& ec) const
-{
-  termios ios;
-  errno = 0;
-  descriptor_ops::error_wrapper(::tcgetattr(
-        descriptor_service_.native_handle(impl), &ios), ec);
-  if (ec)
-    return ec;
-
-  return load(option, ios, ec);
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // !defined(ASIO_WINDOWS) && !defined(__CYGWIN__)
-#endif // defined(ASIO_HAS_SERIAL_PORT)
-
-#endif // ASIO_DETAIL_IMPL_REACTIVE_SERIAL_PORT_SERVICE_IPP
diff --git a/lib/asio/detail/impl/reactive_socket_service_base.ipp b/lib/asio/detail/impl/reactive_socket_service_base.ipp
deleted file mode 100644
index 129b851..0000000
--- a/lib/asio/detail/impl/reactive_socket_service_base.ipp
+++ /dev/null
@@ -1,300 +0,0 @@
-//
-// detail/reactive_socket_service_base.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_REACTIVE_SOCKET_SERVICE_BASE_IPP
-#define ASIO_DETAIL_IMPL_REACTIVE_SOCKET_SERVICE_BASE_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if !defined(ASIO_HAS_IOCP) \
-  && !defined(ASIO_WINDOWS_RUNTIME)
-
-#include "asio/detail/reactive_socket_service_base.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-reactive_socket_service_base::reactive_socket_service_base(
-    asio::io_context& io_context)
-  : io_context_(io_context),
-    reactor_(use_service<reactor>(io_context))
-{
-  reactor_.init_task();
-}
-
-void reactive_socket_service_base::base_shutdown()
-{
-}
-
-void reactive_socket_service_base::construct(
-    reactive_socket_service_base::base_implementation_type& impl)
-{
-  impl.socket_ = invalid_socket;
-  impl.state_ = 0;
-}
-
-void reactive_socket_service_base::base_move_construct(
-    reactive_socket_service_base::base_implementation_type& impl,
-    reactive_socket_service_base::base_implementation_type& other_impl)
-{
-  impl.socket_ = other_impl.socket_;
-  other_impl.socket_ = invalid_socket;
-
-  impl.state_ = other_impl.state_;
-  other_impl.state_ = 0;
-
-  reactor_.move_descriptor(impl.socket_,
-      impl.reactor_data_, other_impl.reactor_data_);
-}
-
-void reactive_socket_service_base::base_move_assign(
-    reactive_socket_service_base::base_implementation_type& impl,
-    reactive_socket_service_base& other_service,
-    reactive_socket_service_base::base_implementation_type& other_impl)
-{
-  destroy(impl);
-
-  impl.socket_ = other_impl.socket_;
-  other_impl.socket_ = invalid_socket;
-
-  impl.state_ = other_impl.state_;
-  other_impl.state_ = 0;
-
-  other_service.reactor_.move_descriptor(impl.socket_,
-      impl.reactor_data_, other_impl.reactor_data_);
-}
-
-void reactive_socket_service_base::destroy(
-    reactive_socket_service_base::base_implementation_type& impl)
-{
-  if (impl.socket_ != invalid_socket)
-  {
-    ASIO_HANDLER_OPERATION((reactor_.context(),
-          "socket", &impl, impl.socket_, "close"));
-
-    reactor_.deregister_descriptor(impl.socket_, impl.reactor_data_,
-        (impl.state_ & socket_ops::possible_dup) == 0);
-
-    asio::error_code ignored_ec;
-    socket_ops::close(impl.socket_, impl.state_, true, ignored_ec);
-
-    reactor_.cleanup_descriptor_data(impl.reactor_data_);
-  }
-}
-
-asio::error_code reactive_socket_service_base::close(
-    reactive_socket_service_base::base_implementation_type& impl,
-    asio::error_code& ec)
-{
-  if (is_open(impl))
-  {
-    ASIO_HANDLER_OPERATION((reactor_.context(),
-          "socket", &impl, impl.socket_, "close"));
-
-    reactor_.deregister_descriptor(impl.socket_, impl.reactor_data_,
-        (impl.state_ & socket_ops::possible_dup) == 0);
-
-    socket_ops::close(impl.socket_, impl.state_, false, ec);
-
-    reactor_.cleanup_descriptor_data(impl.reactor_data_);
-  }
-  else
-  {
-    ec = asio::error_code();
-  }
-
-  // The descriptor is closed by the OS even if close() returns an error.
-  //
-  // (Actually, POSIX says the state of the descriptor is unspecified. On
-  // Linux the descriptor is apparently closed anyway; e.g. see
-  //   http://lkml.org/lkml/2005/9/10/129
-  // We'll just have to assume that other OSes follow the same behaviour. The
-  // known exception is when Windows's closesocket() function fails with
-  // WSAEWOULDBLOCK, but this case is handled inside socket_ops::close().
-  construct(impl);
-
-  return ec;
-}
-
-socket_type reactive_socket_service_base::release(
-    reactive_socket_service_base::base_implementation_type& impl,
-    asio::error_code& ec)
-{
-  if (!is_open(impl))
-  {
-    ec = asio::error::bad_descriptor;
-    return invalid_socket;
-  }
-
-  ASIO_HANDLER_OPERATION((reactor_.context(),
-        "socket", &impl, impl.socket_, "release"));
-
-  reactor_.deregister_descriptor(impl.socket_, impl.reactor_data_, false);
-  reactor_.cleanup_descriptor_data(impl.reactor_data_);
-  socket_type sock = impl.socket_;
-  construct(impl);
-  ec = asio::error_code();
-  return sock;
-}
-
-asio::error_code reactive_socket_service_base::cancel(
-    reactive_socket_service_base::base_implementation_type& impl,
-    asio::error_code& ec)
-{
-  if (!is_open(impl))
-  {
-    ec = asio::error::bad_descriptor;
-    return ec;
-  }
-
-  ASIO_HANDLER_OPERATION((reactor_.context(),
-        "socket", &impl, impl.socket_, "cancel"));
-
-  reactor_.cancel_ops(impl.socket_, impl.reactor_data_);
-  ec = asio::error_code();
-  return ec;
-}
-
-asio::error_code reactive_socket_service_base::do_open(
-    reactive_socket_service_base::base_implementation_type& impl,
-    int af, int type, int protocol, asio::error_code& ec)
-{
-  if (is_open(impl))
-  {
-    ec = asio::error::already_open;
-    return ec;
-  }
-
-  socket_holder sock(socket_ops::socket(af, type, protocol, ec));
-  if (sock.get() == invalid_socket)
-    return ec;
-
-  if (int err = reactor_.register_descriptor(sock.get(), impl.reactor_data_))
-  {
-    ec = asio::error_code(err,
-        asio::error::get_system_category());
-    return ec;
-  }
-
-  impl.socket_ = sock.release();
-  switch (type)
-  {
-  case SOCK_STREAM: impl.state_ = socket_ops::stream_oriented; break;
-  case SOCK_DGRAM: impl.state_ = socket_ops::datagram_oriented; break;
-  default: impl.state_ = 0; break;
-  }
-  ec = asio::error_code();
-  return ec;
-}
-
-asio::error_code reactive_socket_service_base::do_assign(
-    reactive_socket_service_base::base_implementation_type& impl, int type,
-    const reactive_socket_service_base::native_handle_type& native_socket,
-    asio::error_code& ec)
-{
-  if (is_open(impl))
-  {
-    ec = asio::error::already_open;
-    return ec;
-  }
-
-  if (int err = reactor_.register_descriptor(
-        native_socket, impl.reactor_data_))
-  {
-    ec = asio::error_code(err,
-        asio::error::get_system_category());
-    return ec;
-  }
-
-  impl.socket_ = native_socket;
-  switch (type)
-  {
-  case SOCK_STREAM: impl.state_ = socket_ops::stream_oriented; break;
-  case SOCK_DGRAM: impl.state_ = socket_ops::datagram_oriented; break;
-  default: impl.state_ = 0; break;
-  }
-  impl.state_ |= socket_ops::possible_dup;
-  ec = asio::error_code();
-  return ec;
-}
-
-void reactive_socket_service_base::start_op(
-    reactive_socket_service_base::base_implementation_type& impl,
-    int op_type, reactor_op* op, bool is_continuation,
-    bool is_non_blocking, bool noop)
-{
-  if (!noop)
-  {
-    if ((impl.state_ & socket_ops::non_blocking)
-        || socket_ops::set_internal_non_blocking(
-          impl.socket_, impl.state_, true, op->ec_))
-    {
-      reactor_.start_op(op_type, impl.socket_,
-          impl.reactor_data_, op, is_continuation, is_non_blocking);
-      return;
-    }
-  }
-
-  reactor_.post_immediate_completion(op, is_continuation);
-}
-
-void reactive_socket_service_base::start_accept_op(
-    reactive_socket_service_base::base_implementation_type& impl,
-    reactor_op* op, bool is_continuation, bool peer_is_open)
-{
-  if (!peer_is_open)
-    start_op(impl, reactor::read_op, op, is_continuation, true, false);
-  else
-  {
-    op->ec_ = asio::error::already_open;
-    reactor_.post_immediate_completion(op, is_continuation);
-  }
-}
-
-void reactive_socket_service_base::start_connect_op(
-    reactive_socket_service_base::base_implementation_type& impl,
-    reactor_op* op, bool is_continuation,
-    const socket_addr_type* addr, size_t addrlen)
-{
-  if ((impl.state_ & socket_ops::non_blocking)
-      || socket_ops::set_internal_non_blocking(
-        impl.socket_, impl.state_, true, op->ec_))
-  {
-    if (socket_ops::connect(impl.socket_, addr, addrlen, op->ec_) != 0)
-    {
-      if (op->ec_ == asio::error::in_progress
-          || op->ec_ == asio::error::would_block)
-      {
-        op->ec_ = asio::error_code();
-        reactor_.start_op(reactor::connect_op, impl.socket_,
-            impl.reactor_data_, op, is_continuation, false);
-        return;
-      }
-    }
-  }
-
-  reactor_.post_immediate_completion(op, is_continuation);
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // !defined(ASIO_HAS_IOCP)
-       //   && !defined(ASIO_WINDOWS_RUNTIME)
-
-#endif // ASIO_DETAIL_IMPL_REACTIVE_SOCKET_SERVICE_BASE_IPP
diff --git a/lib/asio/detail/impl/resolver_service_base.ipp b/lib/asio/detail/impl/resolver_service_base.ipp
deleted file mode 100644
index 540bb66..0000000
--- a/lib/asio/detail/impl/resolver_service_base.ipp
+++ /dev/null
@@ -1,154 +0,0 @@
-//
-// detail/impl/resolver_service_base.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_RESOLVER_SERVICE_BASE_IPP
-#define ASIO_DETAIL_IMPL_RESOLVER_SERVICE_BASE_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include "asio/detail/resolver_service_base.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-class resolver_service_base::work_io_context_runner
-{
-public:
-  work_io_context_runner(asio::io_context& io_context)
-    : io_context_(io_context) {}
-  void operator()() { io_context_.run(); }
-private:
-  asio::io_context& io_context_;
-};
-
-resolver_service_base::resolver_service_base(
-    asio::io_context& io_context)
-  : io_context_impl_(asio::use_service<io_context_impl>(io_context)),
-    work_io_context_(new asio::io_context(-1)),
-    work_io_context_impl_(asio::use_service<
-        io_context_impl>(*work_io_context_)),
-    work_(asio::make_work_guard(*work_io_context_)),
-    work_thread_(0)
-{
-}
-
-resolver_service_base::~resolver_service_base()
-{
-  base_shutdown();
-}
-
-void resolver_service_base::base_shutdown()
-{
-  work_.reset();
-  if (work_io_context_.get())
-  {
-    work_io_context_->stop();
-    if (work_thread_.get())
-    {
-      work_thread_->join();
-      work_thread_.reset();
-    }
-    work_io_context_.reset();
-  }
-}
-
-void resolver_service_base::base_notify_fork(
-    asio::io_context::fork_event fork_ev)
-{
-  if (work_thread_.get())
-  {
-    if (fork_ev == asio::io_context::fork_prepare)
-    {
-      work_io_context_->stop();
-      work_thread_->join();
-    }
-    else
-    {
-      work_io_context_->restart();
-      work_thread_.reset(new asio::detail::thread(
-            work_io_context_runner(*work_io_context_)));
-    }
-  }
-}
-
-void resolver_service_base::construct(
-    resolver_service_base::implementation_type& impl)
-{
-  impl.reset(static_cast<void*>(0), socket_ops::noop_deleter());
-}
-
-void resolver_service_base::destroy(
-    resolver_service_base::implementation_type& impl)
-{
-  ASIO_HANDLER_OPERATION((io_context_impl_.context(),
-        "resolver", &impl, 0, "cancel"));
-
-  impl.reset();
-}
-
-void resolver_service_base::move_construct(implementation_type& impl,
-    implementation_type& other_impl)
-{
-  impl = ASIO_MOVE_CAST(implementation_type)(other_impl);
-}
-
-void resolver_service_base::move_assign(implementation_type& impl,
-    resolver_service_base&, implementation_type& other_impl)
-{
-  destroy(impl);
-  impl = ASIO_MOVE_CAST(implementation_type)(other_impl);
-}
-
-void resolver_service_base::cancel(
-    resolver_service_base::implementation_type& impl)
-{
-  ASIO_HANDLER_OPERATION((io_context_impl_.context(),
-        "resolver", &impl, 0, "cancel"));
-
-  impl.reset(static_cast<void*>(0), socket_ops::noop_deleter());
-}
-
-void resolver_service_base::start_resolve_op(resolve_op* op)
-{
-  if (ASIO_CONCURRENCY_HINT_IS_LOCKING(SCHEDULER,
-        io_context_impl_.concurrency_hint()))
-  {
-    start_work_thread();
-    io_context_impl_.work_started();
-    work_io_context_impl_.post_immediate_completion(op, false);
-  }
-  else
-  {
-    op->ec_ = asio::error::operation_not_supported;
-    io_context_impl_.post_immediate_completion(op, false);
-  }
-}
-
-void resolver_service_base::start_work_thread()
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-  if (!work_thread_.get())
-  {
-    work_thread_.reset(new asio::detail::thread(
-          work_io_context_runner(*work_io_context_)));
-  }
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_DETAIL_IMPL_RESOLVER_SERVICE_BASE_IPP
diff --git a/lib/asio/detail/impl/scheduler.ipp b/lib/asio/detail/impl/scheduler.ipp
deleted file mode 100644
index 35bc678..0000000
--- a/lib/asio/detail/impl/scheduler.ipp
+++ /dev/null
@@ -1,571 +0,0 @@
-//
-// detail/impl/scheduler.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_SCHEDULER_IPP
-#define ASIO_DETAIL_IMPL_SCHEDULER_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#include "asio/detail/concurrency_hint.hpp"
-#include "asio/detail/event.hpp"
-#include "asio/detail/limits.hpp"
-#include "asio/detail/reactor.hpp"
-#include "asio/detail/scheduler.hpp"
-#include "asio/detail/scheduler_thread_info.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-struct scheduler::task_cleanup
-{
-  ~task_cleanup()
-  {
-    if (this_thread_->private_outstanding_work > 0)
-    {
-      asio::detail::increment(
-          scheduler_->outstanding_work_,
-          this_thread_->private_outstanding_work);
-    }
-    this_thread_->private_outstanding_work = 0;
-
-    // Enqueue the completed operations and reinsert the task at the end of
-    // the operation queue.
-    lock_->lock();
-    scheduler_->task_interrupted_ = true;
-    scheduler_->op_queue_.push(this_thread_->private_op_queue);
-    scheduler_->op_queue_.push(&scheduler_->task_operation_);
-  }
-
-  scheduler* scheduler_;
-  mutex::scoped_lock* lock_;
-  thread_info* this_thread_;
-};
-
-struct scheduler::work_cleanup
-{
-  ~work_cleanup()
-  {
-    if (this_thread_->private_outstanding_work > 1)
-    {
-      asio::detail::increment(
-          scheduler_->outstanding_work_,
-          this_thread_->private_outstanding_work - 1);
-    }
-    else if (this_thread_->private_outstanding_work < 1)
-    {
-      scheduler_->work_finished();
-    }
-    this_thread_->private_outstanding_work = 0;
-
-#if defined(ASIO_HAS_THREADS)
-    if (!this_thread_->private_op_queue.empty())
-    {
-      lock_->lock();
-      scheduler_->op_queue_.push(this_thread_->private_op_queue);
-    }
-#endif // defined(ASIO_HAS_THREADS)
-  }
-
-  scheduler* scheduler_;
-  mutex::scoped_lock* lock_;
-  thread_info* this_thread_;
-};
-
-scheduler::scheduler(
-    asio::execution_context& ctx, int concurrency_hint)
-  : asio::detail::execution_context_service_base<scheduler>(ctx),
-    one_thread_(concurrency_hint == 1
-        || !ASIO_CONCURRENCY_HINT_IS_LOCKING(
-          SCHEDULER, concurrency_hint)
-        || !ASIO_CONCURRENCY_HINT_IS_LOCKING(
-          REACTOR_IO, concurrency_hint)),
-    mutex_(ASIO_CONCURRENCY_HINT_IS_LOCKING(
-          SCHEDULER, concurrency_hint)),
-    task_(0),
-    task_interrupted_(true),
-    outstanding_work_(0),
-    stopped_(false),
-    shutdown_(false),
-    concurrency_hint_(concurrency_hint)
-{
-  ASIO_HANDLER_TRACKING_INIT;
-}
-
-void scheduler::shutdown()
-{
-  mutex::scoped_lock lock(mutex_);
-  shutdown_ = true;
-  lock.unlock();
-
-  // Destroy handler objects.
-  while (!op_queue_.empty())
-  {
-    operation* o = op_queue_.front();
-    op_queue_.pop();
-    if (o != &task_operation_)
-      o->destroy();
-  }
-
-  // Reset to initial state.
-  task_ = 0;
-}
-
-void scheduler::init_task()
-{
-  mutex::scoped_lock lock(mutex_);
-  if (!shutdown_ && !task_)
-  {
-    task_ = &use_service<reactor>(this->context());
-    op_queue_.push(&task_operation_);
-    wake_one_thread_and_unlock(lock);
-  }
-}
-
-std::size_t scheduler::run(asio::error_code& ec)
-{
-  ec = asio::error_code();
-  if (outstanding_work_ == 0)
-  {
-    stop();
-    return 0;
-  }
-
-  thread_info this_thread;
-  this_thread.private_outstanding_work = 0;
-  thread_call_stack::context ctx(this, this_thread);
-
-  mutex::scoped_lock lock(mutex_);
-
-  std::size_t n = 0;
-  for (; do_run_one(lock, this_thread, ec); lock.lock())
-    if (n != (std::numeric_limits<std::size_t>::max)())
-      ++n;
-  return n;
-}
-
-std::size_t scheduler::run_one(asio::error_code& ec)
-{
-  ec = asio::error_code();
-  if (outstanding_work_ == 0)
-  {
-    stop();
-    return 0;
-  }
-
-  thread_info this_thread;
-  this_thread.private_outstanding_work = 0;
-  thread_call_stack::context ctx(this, this_thread);
-
-  mutex::scoped_lock lock(mutex_);
-
-  return do_run_one(lock, this_thread, ec);
-}
-
-std::size_t scheduler::wait_one(long usec, asio::error_code& ec)
-{
-  ec = asio::error_code();
-  if (outstanding_work_ == 0)
-  {
-    stop();
-    return 0;
-  }
-
-  thread_info this_thread;
-  this_thread.private_outstanding_work = 0;
-  thread_call_stack::context ctx(this, this_thread);
-
-  mutex::scoped_lock lock(mutex_);
-
-  return do_wait_one(lock, this_thread, usec, ec);
-}
-
-std::size_t scheduler::poll(asio::error_code& ec)
-{
-  ec = asio::error_code();
-  if (outstanding_work_ == 0)
-  {
-    stop();
-    return 0;
-  }
-
-  thread_info this_thread;
-  this_thread.private_outstanding_work = 0;
-  thread_call_stack::context ctx(this, this_thread);
-
-  mutex::scoped_lock lock(mutex_);
-
-#if defined(ASIO_HAS_THREADS)
-  // We want to support nested calls to poll() and poll_one(), so any handlers
-  // that are already on a thread-private queue need to be put on to the main
-  // queue now.
-  if (one_thread_)
-    if (thread_info* outer_info = static_cast<thread_info*>(ctx.next_by_key()))
-      op_queue_.push(outer_info->private_op_queue);
-#endif // defined(ASIO_HAS_THREADS)
-
-  std::size_t n = 0;
-  for (; do_poll_one(lock, this_thread, ec); lock.lock())
-    if (n != (std::numeric_limits<std::size_t>::max)())
-      ++n;
-  return n;
-}
-
-std::size_t scheduler::poll_one(asio::error_code& ec)
-{
-  ec = asio::error_code();
-  if (outstanding_work_ == 0)
-  {
-    stop();
-    return 0;
-  }
-
-  thread_info this_thread;
-  this_thread.private_outstanding_work = 0;
-  thread_call_stack::context ctx(this, this_thread);
-
-  mutex::scoped_lock lock(mutex_);
-
-#if defined(ASIO_HAS_THREADS)
-  // We want to support nested calls to poll() and poll_one(), so any handlers
-  // that are already on a thread-private queue need to be put on to the main
-  // queue now.
-  if (one_thread_)
-    if (thread_info* outer_info = static_cast<thread_info*>(ctx.next_by_key()))
-      op_queue_.push(outer_info->private_op_queue);
-#endif // defined(ASIO_HAS_THREADS)
-
-  return do_poll_one(lock, this_thread, ec);
-}
-
-void scheduler::stop()
-{
-  mutex::scoped_lock lock(mutex_);
-  stop_all_threads(lock);
-}
-
-bool scheduler::stopped() const
-{
-  mutex::scoped_lock lock(mutex_);
-  return stopped_;
-}
-
-void scheduler::restart()
-{
-  mutex::scoped_lock lock(mutex_);
-  stopped_ = false;
-}
-
-void scheduler::compensating_work_started()
-{
-  thread_info_base* this_thread = thread_call_stack::contains(this);
-  ++static_cast<thread_info*>(this_thread)->private_outstanding_work;
-}
-
-void scheduler::post_immediate_completion(
-    scheduler::operation* op, bool is_continuation)
-{
-#if defined(ASIO_HAS_THREADS)
-  if (one_thread_ || is_continuation)
-  {
-    if (thread_info_base* this_thread = thread_call_stack::contains(this))
-    {
-      ++static_cast<thread_info*>(this_thread)->private_outstanding_work;
-      static_cast<thread_info*>(this_thread)->private_op_queue.push(op);
-      return;
-    }
-  }
-#else // defined(ASIO_HAS_THREADS)
-  (void)is_continuation;
-#endif // defined(ASIO_HAS_THREADS)
-
-  work_started();
-  mutex::scoped_lock lock(mutex_);
-  op_queue_.push(op);
-  wake_one_thread_and_unlock(lock);
-}
-
-void scheduler::post_deferred_completion(scheduler::operation* op)
-{
-#if defined(ASIO_HAS_THREADS)
-  if (one_thread_)
-  {
-    if (thread_info_base* this_thread = thread_call_stack::contains(this))
-    {
-      static_cast<thread_info*>(this_thread)->private_op_queue.push(op);
-      return;
-    }
-  }
-#endif // defined(ASIO_HAS_THREADS)
-
-  mutex::scoped_lock lock(mutex_);
-  op_queue_.push(op);
-  wake_one_thread_and_unlock(lock);
-}
-
-void scheduler::post_deferred_completions(
-    op_queue<scheduler::operation>& ops)
-{
-  if (!ops.empty())
-  {
-#if defined(ASIO_HAS_THREADS)
-    if (one_thread_)
-    {
-      if (thread_info_base* this_thread = thread_call_stack::contains(this))
-      {
-        static_cast<thread_info*>(this_thread)->private_op_queue.push(ops);
-        return;
-      }
-    }
-#endif // defined(ASIO_HAS_THREADS)
-
-    mutex::scoped_lock lock(mutex_);
-    op_queue_.push(ops);
-    wake_one_thread_and_unlock(lock);
-  }
-}
-
-void scheduler::do_dispatch(
-    scheduler::operation* op)
-{
-  work_started();
-  mutex::scoped_lock lock(mutex_);
-  op_queue_.push(op);
-  wake_one_thread_and_unlock(lock);
-}
-
-void scheduler::abandon_operations(
-    op_queue<scheduler::operation>& ops)
-{
-  op_queue<scheduler::operation> ops2;
-  ops2.push(ops);
-}
-
-std::size_t scheduler::do_run_one(mutex::scoped_lock& lock,
-    scheduler::thread_info& this_thread,
-    const asio::error_code& ec)
-{
-  while (!stopped_)
-  {
-    if (!op_queue_.empty())
-    {
-      // Prepare to execute first handler from queue.
-      operation* o = op_queue_.front();
-      op_queue_.pop();
-      bool more_handlers = (!op_queue_.empty());
-
-      if (o == &task_operation_)
-      {
-        task_interrupted_ = more_handlers;
-
-        if (more_handlers && !one_thread_)
-          wakeup_event_.unlock_and_signal_one(lock);
-        else
-          lock.unlock();
-
-        task_cleanup on_exit = { this, &lock, &this_thread };
-        (void)on_exit;
-
-        // Run the task. May throw an exception. Only block if the operation
-        // queue is empty and we're not polling, otherwise we want to return
-        // as soon as possible.
-        task_->run(more_handlers ? 0 : -1, this_thread.private_op_queue);
-      }
-      else
-      {
-        std::size_t task_result = o->task_result_;
-
-        if (more_handlers && !one_thread_)
-          wake_one_thread_and_unlock(lock);
-        else
-          lock.unlock();
-
-        // Ensure the count of outstanding work is decremented on block exit.
-        work_cleanup on_exit = { this, &lock, &this_thread };
-        (void)on_exit;
-
-        // Complete the operation. May throw an exception. Deletes the object.
-        o->complete(this, ec, task_result);
-
-        return 1;
-      }
-    }
-    else
-    {
-      wakeup_event_.clear(lock);
-      wakeup_event_.wait(lock);
-    }
-  }
-
-  return 0;
-}
-
-std::size_t scheduler::do_wait_one(mutex::scoped_lock& lock,
-    scheduler::thread_info& this_thread, long usec,
-    const asio::error_code& ec)
-{
-  if (stopped_)
-    return 0;
-
-  operation* o = op_queue_.front();
-  if (o == 0)
-  {
-    wakeup_event_.clear(lock);
-    wakeup_event_.wait_for_usec(lock, usec);
-    usec = 0; // Wait at most once.
-    o = op_queue_.front();
-  }
-
-  if (o == &task_operation_)
-  {
-    op_queue_.pop();
-    bool more_handlers = (!op_queue_.empty());
-
-    task_interrupted_ = more_handlers;
-
-    if (more_handlers && !one_thread_)
-      wakeup_event_.unlock_and_signal_one(lock);
-    else
-      lock.unlock();
-
-    {
-      task_cleanup on_exit = { this, &lock, &this_thread };
-      (void)on_exit;
-
-      // Run the task. May throw an exception. Only block if the operation
-      // queue is empty and we're not polling, otherwise we want to return
-      // as soon as possible.
-      task_->run(more_handlers ? 0 : usec, this_thread.private_op_queue);
-    }
-
-    o = op_queue_.front();
-    if (o == &task_operation_)
-    {
-      if (!one_thread_)
-        wakeup_event_.maybe_unlock_and_signal_one(lock);
-      return 0;
-    }
-  }
-
-  if (o == 0)
-    return 0;
-
-  op_queue_.pop();
-  bool more_handlers = (!op_queue_.empty());
-
-  std::size_t task_result = o->task_result_;
-
-  if (more_handlers && !one_thread_)
-    wake_one_thread_and_unlock(lock);
-  else
-    lock.unlock();
-
-  // Ensure the count of outstanding work is decremented on block exit.
-  work_cleanup on_exit = { this, &lock, &this_thread };
-  (void)on_exit;
-
-  // Complete the operation. May throw an exception. Deletes the object.
-  o->complete(this, ec, task_result);
-
-  return 1;
-}
-
-std::size_t scheduler::do_poll_one(mutex::scoped_lock& lock,
-    scheduler::thread_info& this_thread,
-    const asio::error_code& ec)
-{
-  if (stopped_)
-    return 0;
-
-  operation* o = op_queue_.front();
-  if (o == &task_operation_)
-  {
-    op_queue_.pop();
-    lock.unlock();
-
-    {
-      task_cleanup c = { this, &lock, &this_thread };
-      (void)c;
-
-      // Run the task. May throw an exception. Only block if the operation
-      // queue is empty and we're not polling, otherwise we want to return
-      // as soon as possible.
-      task_->run(0, this_thread.private_op_queue);
-    }
-
-    o = op_queue_.front();
-    if (o == &task_operation_)
-    {
-      wakeup_event_.maybe_unlock_and_signal_one(lock);
-      return 0;
-    }
-  }
-
-  if (o == 0)
-    return 0;
-
-  op_queue_.pop();
-  bool more_handlers = (!op_queue_.empty());
-
-  std::size_t task_result = o->task_result_;
-
-  if (more_handlers && !one_thread_)
-    wake_one_thread_and_unlock(lock);
-  else
-    lock.unlock();
-
-  // Ensure the count of outstanding work is decremented on block exit.
-  work_cleanup on_exit = { this, &lock, &this_thread };
-  (void)on_exit;
-
-  // Complete the operation. May throw an exception. Deletes the object.
-  o->complete(this, ec, task_result);
-
-  return 1;
-}
-
-void scheduler::stop_all_threads(
-    mutex::scoped_lock& lock)
-{
-  stopped_ = true;
-  wakeup_event_.signal_all(lock);
-
-  if (!task_interrupted_ && task_)
-  {
-    task_interrupted_ = true;
-    task_->interrupt();
-  }
-}
-
-void scheduler::wake_one_thread_and_unlock(
-    mutex::scoped_lock& lock)
-{
-  if (!wakeup_event_.maybe_unlock_and_signal_one(lock))
-  {
-    if (!task_interrupted_ && task_)
-    {
-      task_interrupted_ = true;
-      task_->interrupt();
-    }
-    lock.unlock();
-  }
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_DETAIL_IMPL_SCHEDULER_IPP
diff --git a/lib/asio/detail/impl/select_reactor.hpp b/lib/asio/detail/impl/select_reactor.hpp
deleted file mode 100644
index 04a04d4..0000000
--- a/lib/asio/detail/impl/select_reactor.hpp
+++ /dev/null
@@ -1,100 +0,0 @@
-//
-// detail/impl/select_reactor.hpp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_SELECT_REACTOR_HPP
-#define ASIO_DETAIL_IMPL_SELECT_REACTOR_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_HAS_IOCP) \
-  || (!defined(ASIO_HAS_DEV_POLL) \
-      && !defined(ASIO_HAS_EPOLL) \
-      && !defined(ASIO_HAS_KQUEUE) \
-      && !defined(ASIO_WINDOWS_RUNTIME))
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-template <typename Time_Traits>
-void select_reactor::add_timer_queue(timer_queue<Time_Traits>& queue)
-{
-  do_add_timer_queue(queue);
-}
-
-// Remove a timer queue from the reactor.
-template <typename Time_Traits>
-void select_reactor::remove_timer_queue(timer_queue<Time_Traits>& queue)
-{
-  do_remove_timer_queue(queue);
-}
-
-template <typename Time_Traits>
-void select_reactor::schedule_timer(timer_queue<Time_Traits>& queue,
-    const typename Time_Traits::time_type& time,
-    typename timer_queue<Time_Traits>::per_timer_data& timer, wait_op* op)
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-
-  if (shutdown_)
-  {
-    scheduler_.post_immediate_completion(op, false);
-    return;
-  }
-
-  bool earliest = queue.enqueue_timer(time, timer, op);
-  scheduler_.work_started();
-  if (earliest)
-    interrupter_.interrupt();
-}
-
-template <typename Time_Traits>
-std::size_t select_reactor::cancel_timer(timer_queue<Time_Traits>& queue,
-    typename timer_queue<Time_Traits>::per_timer_data& timer,
-    std::size_t max_cancelled)
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-  op_queue<operation> ops;
-  std::size_t n = queue.cancel_timer(timer, ops, max_cancelled);
-  lock.unlock();
-  scheduler_.post_deferred_completions(ops);
-  return n;
-}
-
-template <typename Time_Traits>
-void select_reactor::move_timer(timer_queue<Time_Traits>& queue,
-    typename timer_queue<Time_Traits>::per_timer_data& target,
-    typename timer_queue<Time_Traits>::per_timer_data& source)
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-  op_queue<operation> ops;
-  queue.cancel_timer(target, ops);
-  queue.move_timer(target, source);
-  lock.unlock();
-  scheduler_.post_deferred_completions(ops);
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_HAS_IOCP)
-       //   || (!defined(ASIO_HAS_DEV_POLL)
-       //       && !defined(ASIO_HAS_EPOLL)
-       //       && !defined(ASIO_HAS_KQUEUE)
-       //       && !defined(ASIO_WINDOWS_RUNTIME))
-
-#endif // ASIO_DETAIL_IMPL_SELECT_REACTOR_HPP
diff --git a/lib/asio/detail/impl/select_reactor.ipp b/lib/asio/detail/impl/select_reactor.ipp
deleted file mode 100644
index 262bc69..0000000
--- a/lib/asio/detail/impl/select_reactor.ipp
+++ /dev/null
@@ -1,333 +0,0 @@
-//
-// detail/impl/select_reactor.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_SELECT_REACTOR_IPP
-#define ASIO_DETAIL_IMPL_SELECT_REACTOR_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_HAS_IOCP) \
-  || (!defined(ASIO_HAS_DEV_POLL) \
-      && !defined(ASIO_HAS_EPOLL) \
-      && !defined(ASIO_HAS_KQUEUE) \
-      && !defined(ASIO_WINDOWS_RUNTIME))
-
-#include "asio/detail/fd_set_adapter.hpp"
-#include "asio/detail/select_reactor.hpp"
-#include "asio/detail/signal_blocker.hpp"
-#include "asio/detail/socket_ops.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-#if defined(ASIO_HAS_IOCP)
-class select_reactor::thread_function
-{
-public:
-  explicit thread_function(select_reactor* r)
-    : this_(r)
-  {
-  }
-
-  void operator()()
-  {
-    this_->run_thread();
-  }
-
-private:
-  select_reactor* this_;
-};
-#endif // defined(ASIO_HAS_IOCP)
-
-select_reactor::select_reactor(asio::execution_context& ctx)
-  : execution_context_service_base<select_reactor>(ctx),
-    scheduler_(use_service<scheduler_type>(ctx)),
-    mutex_(),
-    interrupter_(),
-#if defined(ASIO_HAS_IOCP)
-    stop_thread_(false),
-    thread_(0),
-#endif // defined(ASIO_HAS_IOCP)
-    shutdown_(false)
-{
-#if defined(ASIO_HAS_IOCP)
-  asio::detail::signal_blocker sb;
-  thread_ = new asio::detail::thread(thread_function(this));
-#endif // defined(ASIO_HAS_IOCP)
-}
-
-select_reactor::~select_reactor()
-{
-  shutdown();
-}
-
-void select_reactor::shutdown()
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-  shutdown_ = true;
-#if defined(ASIO_HAS_IOCP)
-  stop_thread_ = true;
-#endif // defined(ASIO_HAS_IOCP)
-  lock.unlock();
-
-#if defined(ASIO_HAS_IOCP)
-  if (thread_)
-  {
-    interrupter_.interrupt();
-    thread_->join();
-    delete thread_;
-    thread_ = 0;
-  }
-#endif // defined(ASIO_HAS_IOCP)
-
-  op_queue<operation> ops;
-
-  for (int i = 0; i < max_ops; ++i)
-    op_queue_[i].get_all_operations(ops);
-
-  timer_queues_.get_all_timers(ops);
-
-  scheduler_.abandon_operations(ops);
-}
-
-void select_reactor::notify_fork(
-    asio::execution_context::fork_event fork_ev)
-{
-  if (fork_ev == asio::execution_context::fork_child)
-    interrupter_.recreate();
-}
-
-void select_reactor::init_task()
-{
-  scheduler_.init_task();
-}
-
-int select_reactor::register_descriptor(socket_type,
-    select_reactor::per_descriptor_data&)
-{
-  return 0;
-}
-
-int select_reactor::register_internal_descriptor(
-    int op_type, socket_type descriptor,
-    select_reactor::per_descriptor_data&, reactor_op* op)
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-
-  op_queue_[op_type].enqueue_operation(descriptor, op);
-  interrupter_.interrupt();
-
-  return 0;
-}
-
-void select_reactor::move_descriptor(socket_type,
-    select_reactor::per_descriptor_data&,
-    select_reactor::per_descriptor_data&)
-{
-}
-
-void select_reactor::start_op(int op_type, socket_type descriptor,
-    select_reactor::per_descriptor_data&, reactor_op* op,
-    bool is_continuation, bool)
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-
-  if (shutdown_)
-  {
-    post_immediate_completion(op, is_continuation);
-    return;
-  }
-
-  bool first = op_queue_[op_type].enqueue_operation(descriptor, op);
-  scheduler_.work_started();
-  if (first)
-    interrupter_.interrupt();
-}
-
-void select_reactor::cancel_ops(socket_type descriptor,
-    select_reactor::per_descriptor_data&)
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-  cancel_ops_unlocked(descriptor, asio::error::operation_aborted);
-}
-
-void select_reactor::deregister_descriptor(socket_type descriptor,
-    select_reactor::per_descriptor_data&, bool)
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-  cancel_ops_unlocked(descriptor, asio::error::operation_aborted);
-}
-
-void select_reactor::deregister_internal_descriptor(
-    socket_type descriptor, select_reactor::per_descriptor_data&)
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-  op_queue<operation> ops;
-  for (int i = 0; i < max_ops; ++i)
-    op_queue_[i].cancel_operations(descriptor, ops);
-}
-
-void select_reactor::cleanup_descriptor_data(
-    select_reactor::per_descriptor_data&)
-{
-}
-
-void select_reactor::run(long usec, op_queue<operation>& ops)
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-
-#if defined(ASIO_HAS_IOCP)
-  // Check if the thread is supposed to stop.
-  if (stop_thread_)
-    return;
-#endif // defined(ASIO_HAS_IOCP)
-
-  // Set up the descriptor sets.
-  for (int i = 0; i < max_select_ops; ++i)
-    fd_sets_[i].reset();
-  fd_sets_[read_op].set(interrupter_.read_descriptor());
-  socket_type max_fd = 0;
-  bool have_work_to_do = !timer_queues_.all_empty();
-  for (int i = 0; i < max_select_ops; ++i)
-  {
-    have_work_to_do = have_work_to_do || !op_queue_[i].empty();
-    fd_sets_[i].set(op_queue_[i], ops);
-    if (fd_sets_[i].max_descriptor() > max_fd)
-      max_fd = fd_sets_[i].max_descriptor();
-  }
-
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  // Connection operations on Windows use both except and write fd_sets.
-  have_work_to_do = have_work_to_do || !op_queue_[connect_op].empty();
-  fd_sets_[write_op].set(op_queue_[connect_op], ops);
-  if (fd_sets_[write_op].max_descriptor() > max_fd)
-    max_fd = fd_sets_[write_op].max_descriptor();
-  fd_sets_[except_op].set(op_queue_[connect_op], ops);
-  if (fd_sets_[except_op].max_descriptor() > max_fd)
-    max_fd = fd_sets_[except_op].max_descriptor();
-#endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-
-  // We can return immediately if there's no work to do and the reactor is
-  // not supposed to block.
-  if (!usec && !have_work_to_do)
-    return;
-
-  // Determine how long to block while waiting for events.
-  timeval tv_buf = { 0, 0 };
-  timeval* tv = usec ? get_timeout(usec, tv_buf) : &tv_buf;
-
-  lock.unlock();
-
-  // Block on the select call until descriptors become ready.
-  asio::error_code ec;
-  int retval = socket_ops::select(static_cast<int>(max_fd + 1),
-      fd_sets_[read_op], fd_sets_[write_op], fd_sets_[except_op], tv, ec);
-
-  // Reset the interrupter.
-  if (retval > 0 && fd_sets_[read_op].is_set(interrupter_.read_descriptor()))
-  {
-    interrupter_.reset();
-    --retval;
-  }
-
-  lock.lock();
-
-  // Dispatch all ready operations.
-  if (retval > 0)
-  {
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-    // Connection operations on Windows use both except and write fd_sets.
-    fd_sets_[except_op].perform(op_queue_[connect_op], ops);
-    fd_sets_[write_op].perform(op_queue_[connect_op], ops);
-#endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-
-    // Exception operations must be processed first to ensure that any
-    // out-of-band data is read before normal data.
-    for (int i = max_select_ops - 1; i >= 0; --i)
-      fd_sets_[i].perform(op_queue_[i], ops);
-  }
-  timer_queues_.get_ready_timers(ops);
-}
-
-void select_reactor::interrupt()
-{
-  interrupter_.interrupt();
-}
-
-#if defined(ASIO_HAS_IOCP)
-void select_reactor::run_thread()
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-  while (!stop_thread_)
-  {
-    lock.unlock();
-    op_queue<operation> ops;
-    run(true, ops);
-    scheduler_.post_deferred_completions(ops);
-    lock.lock();
-  }
-}
-#endif // defined(ASIO_HAS_IOCP)
-
-void select_reactor::do_add_timer_queue(timer_queue_base& queue)
-{
-  mutex::scoped_lock lock(mutex_);
-  timer_queues_.insert(&queue);
-}
-
-void select_reactor::do_remove_timer_queue(timer_queue_base& queue)
-{
-  mutex::scoped_lock lock(mutex_);
-  timer_queues_.erase(&queue);
-}
-
-timeval* select_reactor::get_timeout(long usec, timeval& tv)
-{
-  // By default we will wait no longer than 5 minutes. This will ensure that
-  // any changes to the system clock are detected after no longer than this.
-  const long max_usec = 5 * 60 * 1000 * 1000;
-  usec = timer_queues_.wait_duration_usec(
-      (usec < 0 || max_usec < usec) ? max_usec : usec);
-  tv.tv_sec = usec / 1000000;
-  tv.tv_usec = usec % 1000000;
-  return &tv;
-}
-
-void select_reactor::cancel_ops_unlocked(socket_type descriptor,
-    const asio::error_code& ec)
-{
-  bool need_interrupt = false;
-  op_queue<operation> ops;
-  for (int i = 0; i < max_ops; ++i)
-    need_interrupt = op_queue_[i].cancel_operations(
-        descriptor, ops, ec) || need_interrupt;
-  scheduler_.post_deferred_completions(ops);
-  if (need_interrupt)
-    interrupter_.interrupt();
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_HAS_IOCP)
-       //   || (!defined(ASIO_HAS_DEV_POLL)
-       //       && !defined(ASIO_HAS_EPOLL)
-       //       && !defined(ASIO_HAS_KQUEUE))
-       //       && !defined(ASIO_WINDOWS_RUNTIME))
-
-#endif // ASIO_DETAIL_IMPL_SELECT_REACTOR_IPP
diff --git a/lib/asio/detail/impl/service_registry.hpp b/lib/asio/detail/impl/service_registry.hpp
deleted file mode 100644
index d4db589..0000000
--- a/lib/asio/detail/impl/service_registry.hpp
+++ /dev/null
@@ -1,94 +0,0 @@
-//
-// detail/impl/service_registry.hpp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_SERVICE_REGISTRY_HPP
-#define ASIO_DETAIL_IMPL_SERVICE_REGISTRY_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-template <typename Service>
-Service& service_registry::use_service()
-{
-  execution_context::service::key key;
-  init_key<Service>(key, 0);
-  factory_type factory = &service_registry::create<Service, execution_context>;
-  return *static_cast<Service*>(do_use_service(key, factory, &owner_));
-}
-
-template <typename Service>
-Service& service_registry::use_service(io_context& owner)
-{
-  execution_context::service::key key;
-  init_key<Service>(key, 0);
-  factory_type factory = &service_registry::create<Service, io_context>;
-  return *static_cast<Service*>(do_use_service(key, factory, &owner));
-}
-
-template <typename Service>
-void service_registry::add_service(Service* new_service)
-{
-  execution_context::service::key key;
-  init_key<Service>(key, 0);
-  return do_add_service(key, new_service);
-}
-
-template <typename Service>
-bool service_registry::has_service() const
-{
-  execution_context::service::key key;
-  init_key<Service>(key, 0);
-  return do_has_service(key);
-}
-
-template <typename Service>
-inline void service_registry::init_key(
-    execution_context::service::key& key, ...)
-{
-  init_key_from_id(key, Service::id);
-}
-
-#if !defined(ASIO_NO_TYPEID)
-template <typename Service>
-void service_registry::init_key(execution_context::service::key& key,
-    typename enable_if<
-      is_base_of<typename Service::key_type, Service>::value>::type*)
-{
-  key.type_info_ = &typeid(typeid_wrapper<Service>);
-  key.id_ = 0;
-}
-
-template <typename Service>
-void service_registry::init_key_from_id(execution_context::service::key& key,
-    const service_id<Service>& /*id*/)
-{
-  key.type_info_ = &typeid(typeid_wrapper<Service>);
-  key.id_ = 0;
-}
-#endif // !defined(ASIO_NO_TYPEID)
-
-template <typename Service, typename Owner>
-execution_context::service* service_registry::create(void* owner)
-{
-  return new Service(*static_cast<Owner*>(owner));
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_DETAIL_IMPL_SERVICE_REGISTRY_HPP
diff --git a/lib/asio/detail/impl/service_registry.ipp b/lib/asio/detail/impl/service_registry.ipp
deleted file mode 100644
index a465033..0000000
--- a/lib/asio/detail/impl/service_registry.ipp
+++ /dev/null
@@ -1,197 +0,0 @@
-//
-// detail/impl/service_registry.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_SERVICE_REGISTRY_IPP
-#define ASIO_DETAIL_IMPL_SERVICE_REGISTRY_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include <vector>
-#include "asio/detail/service_registry.hpp"
-#include "asio/detail/throw_exception.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-service_registry::service_registry(execution_context& owner)
-  : owner_(owner),
-    first_service_(0)
-{
-}
-
-service_registry::~service_registry()
-{
-}
-
-void service_registry::shutdown_services()
-{
-  execution_context::service* service = first_service_;
-  while (service)
-  {
-    service->shutdown();
-    service = service->next_;
-  }
-}
-
-void service_registry::destroy_services()
-{
-  while (first_service_)
-  {
-    execution_context::service* next_service = first_service_->next_;
-    destroy(first_service_);
-    first_service_ = next_service;
-  }
-}
-
-void service_registry::notify_fork(execution_context::fork_event fork_ev)
-{
-  // Make a copy of all of the services while holding the lock. We don't want
-  // to hold the lock while calling into each service, as it may try to call
-  // back into this class.
-  std::vector<execution_context::service*> services;
-  {
-    asio::detail::mutex::scoped_lock lock(mutex_);
-    execution_context::service* service = first_service_;
-    while (service)
-    {
-      services.push_back(service);
-      service = service->next_;
-    }
-  }
-
-  // If processing the fork_prepare event, we want to go in reverse order of
-  // service registration, which happens to be the existing order of the
-  // services in the vector. For the other events we want to go in the other
-  // direction.
-  std::size_t num_services = services.size();
-  if (fork_ev == execution_context::fork_prepare)
-    for (std::size_t i = 0; i < num_services; ++i)
-      services[i]->notify_fork(fork_ev);
-  else
-    for (std::size_t i = num_services; i > 0; --i)
-      services[i - 1]->notify_fork(fork_ev);
-}
-
-void service_registry::init_key_from_id(execution_context::service::key& key,
-    const execution_context::id& id)
-{
-  key.type_info_ = 0;
-  key.id_ = &id;
-}
-
-bool service_registry::keys_match(
-    const execution_context::service::key& key1,
-    const execution_context::service::key& key2)
-{
-  if (key1.id_ && key2.id_)
-    if (key1.id_ == key2.id_)
-      return true;
-  if (key1.type_info_ && key2.type_info_)
-    if (*key1.type_info_ == *key2.type_info_)
-      return true;
-  return false;
-}
-
-void service_registry::destroy(execution_context::service* service)
-{
-  delete service;
-}
-
-execution_context::service* service_registry::do_use_service(
-    const execution_context::service::key& key,
-    factory_type factory, void* owner)
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-
-  // First see if there is an existing service object with the given key.
-  execution_context::service* service = first_service_;
-  while (service)
-  {
-    if (keys_match(service->key_, key))
-      return service;
-    service = service->next_;
-  }
-
-  // Create a new service object. The service registry's mutex is not locked
-  // at this time to allow for nested calls into this function from the new
-  // service's constructor.
-  lock.unlock();
-  auto_service_ptr new_service = { factory(owner) };
-  new_service.ptr_->key_ = key;
-  lock.lock();
-
-  // Check that nobody else created another service object of the same type
-  // while the lock was released.
-  service = first_service_;
-  while (service)
-  {
-    if (keys_match(service->key_, key))
-      return service;
-    service = service->next_;
-  }
-
-  // Service was successfully initialised, pass ownership to registry.
-  new_service.ptr_->next_ = first_service_;
-  first_service_ = new_service.ptr_;
-  new_service.ptr_ = 0;
-  return first_service_;
-}
-
-void service_registry::do_add_service(
-    const execution_context::service::key& key,
-    execution_context::service* new_service)
-{
-  if (&owner_ != &new_service->context())
-    asio::detail::throw_exception(invalid_service_owner());
-
-  asio::detail::mutex::scoped_lock lock(mutex_);
-
-  // Check if there is an existing service object with the given key.
-  execution_context::service* service = first_service_;
-  while (service)
-  {
-    if (keys_match(service->key_, key))
-      asio::detail::throw_exception(service_already_exists());
-    service = service->next_;
-  }
-
-  // Take ownership of the service object.
-  new_service->key_ = key;
-  new_service->next_ = first_service_;
-  first_service_ = new_service;
-}
-
-bool service_registry::do_has_service(
-    const execution_context::service::key& key) const
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-
-  execution_context::service* service = first_service_;
-  while (service)
-  {
-    if (keys_match(service->key_, key))
-      return true;
-    service = service->next_;
-  }
-
-  return false;
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_DETAIL_IMPL_SERVICE_REGISTRY_IPP
diff --git a/lib/asio/detail/impl/signal_set_service.ipp b/lib/asio/detail/impl/signal_set_service.ipp
deleted file mode 100644
index dd68fc1..0000000
--- a/lib/asio/detail/impl/signal_set_service.ipp
+++ /dev/null
@@ -1,669 +0,0 @@
-//
-// detail/impl/signal_set_service.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_SIGNAL_SET_SERVICE_IPP
-#define ASIO_DETAIL_IMPL_SIGNAL_SET_SERVICE_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#include <cstring>
-#include <stdexcept>
-#include "asio/detail/reactor.hpp"
-#include "asio/detail/signal_blocker.hpp"
-#include "asio/detail/signal_set_service.hpp"
-#include "asio/detail/static_mutex.hpp"
-#include "asio/detail/throw_exception.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-struct signal_state
-{
-  // Mutex used for protecting global state.
-  static_mutex mutex_;
-
-  // The read end of the pipe used for signal notifications.
-  int read_descriptor_;
-
-  // The write end of the pipe used for signal notifications.
-  int write_descriptor_;
-
-  // Whether the signal state has been prepared for a fork.
-  bool fork_prepared_;
-
-  // The head of a linked list of all signal_set_service instances.
-  class signal_set_service* service_list_;
-
-  // A count of the number of objects that are registered for each signal.
-  std::size_t registration_count_[max_signal_number];
-};
-
-signal_state* get_signal_state()
-{
-  static signal_state state = {
-    ASIO_STATIC_MUTEX_INIT, -1, -1, false, 0, { 0 } };
-  return &state;
-}
-
-void asio_signal_handler(int signal_number)
-{
-#if defined(ASIO_WINDOWS) \
-  || defined(ASIO_WINDOWS_RUNTIME) \
-  || defined(__CYGWIN__)
-  signal_set_service::deliver_signal(signal_number);
-#else // defined(ASIO_WINDOWS)
-      //   || defined(ASIO_WINDOWS_RUNTIME)
-      //   || defined(__CYGWIN__)
-  int saved_errno = errno;
-  signal_state* state = get_signal_state();
-  signed_size_type result = ::write(state->write_descriptor_,
-      &signal_number, sizeof(signal_number));
-  (void)result;
-  errno = saved_errno;
-#endif // defined(ASIO_WINDOWS)
-       //   || defined(ASIO_WINDOWS_RUNTIME)
-       //   || defined(__CYGWIN__)
-
-#if defined(ASIO_HAS_SIGNAL) && !defined(ASIO_HAS_SIGACTION)
-  ::signal(signal_number, asio_signal_handler);
-#endif // defined(ASIO_HAS_SIGNAL) && !defined(ASIO_HAS_SIGACTION)
-}
-
-#if !defined(ASIO_WINDOWS) \
-  && !defined(ASIO_WINDOWS_RUNTIME) \
-  && !defined(__CYGWIN__)
-class signal_set_service::pipe_read_op : public reactor_op
-{
-public:
-  pipe_read_op()
-    : reactor_op(&pipe_read_op::do_perform, pipe_read_op::do_complete)
-  {
-  }
-
-  static status do_perform(reactor_op*)
-  {
-    signal_state* state = get_signal_state();
-
-    int fd = state->read_descriptor_;
-    int signal_number = 0;
-    while (::read(fd, &signal_number, sizeof(int)) == sizeof(int))
-      if (signal_number >= 0 && signal_number < max_signal_number)
-        signal_set_service::deliver_signal(signal_number);
-
-    return not_done;
-  }
-
-  static void do_complete(void* /*owner*/, operation* base,
-      const asio::error_code& /*ec*/,
-      std::size_t /*bytes_transferred*/)
-  {
-    pipe_read_op* o(static_cast<pipe_read_op*>(base));
-    delete o;
-  }
-};
-#endif // !defined(ASIO_WINDOWS)
-       //   && !defined(ASIO_WINDOWS_RUNTIME)
-       //   && !defined(__CYGWIN__)
-
-signal_set_service::signal_set_service(
-    asio::io_context& io_context)
-  : service_base<signal_set_service>(io_context),
-    io_context_(asio::use_service<io_context_impl>(io_context)),
-#if !defined(ASIO_WINDOWS) \
-  && !defined(ASIO_WINDOWS_RUNTIME) \
-  && !defined(__CYGWIN__)
-    reactor_(asio::use_service<reactor>(io_context)),
-#endif // !defined(ASIO_WINDOWS)
-       //   && !defined(ASIO_WINDOWS_RUNTIME)
-       //   && !defined(__CYGWIN__)
-    next_(0),
-    prev_(0)
-{
-  get_signal_state()->mutex_.init();
-
-#if !defined(ASIO_WINDOWS) \
-  && !defined(ASIO_WINDOWS_RUNTIME) \
-  && !defined(__CYGWIN__)
-  reactor_.init_task();
-#endif // !defined(ASIO_WINDOWS)
-       //   && !defined(ASIO_WINDOWS_RUNTIME)
-       //   && !defined(__CYGWIN__)
-
-  for (int i = 0; i < max_signal_number; ++i)
-    registrations_[i] = 0;
-
-  add_service(this);
-}
-
-signal_set_service::~signal_set_service()
-{
-  remove_service(this);
-}
-
-void signal_set_service::shutdown()
-{
-  remove_service(this);
-
-  op_queue<operation> ops;
-
-  for (int i = 0; i < max_signal_number; ++i)
-  {
-    registration* reg = registrations_[i];
-    while (reg)
-    {
-      ops.push(*reg->queue_);
-      reg = reg->next_in_table_;
-    }
-  }
-
-  io_context_.abandon_operations(ops);
-}
-
-void signal_set_service::notify_fork(
-    asio::io_context::fork_event fork_ev)
-{
-#if !defined(ASIO_WINDOWS) \
-  && !defined(ASIO_WINDOWS_RUNTIME) \
-  && !defined(__CYGWIN__)
-  signal_state* state = get_signal_state();
-  static_mutex::scoped_lock lock(state->mutex_);
-
-  switch (fork_ev)
-  {
-  case asio::io_context::fork_prepare:
-    {
-      int read_descriptor = state->read_descriptor_;
-      state->fork_prepared_ = true;
-      lock.unlock();
-      reactor_.deregister_internal_descriptor(read_descriptor, reactor_data_);
-      reactor_.cleanup_descriptor_data(reactor_data_);
-    }
-    break;
-  case asio::io_context::fork_parent:
-    if (state->fork_prepared_)
-    {
-      int read_descriptor = state->read_descriptor_;
-      state->fork_prepared_ = false;
-      lock.unlock();
-      reactor_.register_internal_descriptor(reactor::read_op,
-          read_descriptor, reactor_data_, new pipe_read_op);
-    }
-    break;
-  case asio::io_context::fork_child:
-    if (state->fork_prepared_)
-    {
-      asio::detail::signal_blocker blocker;
-      close_descriptors();
-      open_descriptors();
-      int read_descriptor = state->read_descriptor_;
-      state->fork_prepared_ = false;
-      lock.unlock();
-      reactor_.register_internal_descriptor(reactor::read_op,
-          read_descriptor, reactor_data_, new pipe_read_op);
-    }
-    break;
-  default:
-    break;
-  }
-#else // !defined(ASIO_WINDOWS)
-      //   && !defined(ASIO_WINDOWS_RUNTIME)
-      //   && !defined(__CYGWIN__)
-  (void)fork_ev;
-#endif // !defined(ASIO_WINDOWS)
-       //   && !defined(ASIO_WINDOWS_RUNTIME)
-       //   && !defined(__CYGWIN__)
-}
-
-void signal_set_service::construct(
-    signal_set_service::implementation_type& impl)
-{
-  impl.signals_ = 0;
-}
-
-void signal_set_service::destroy(
-    signal_set_service::implementation_type& impl)
-{
-  asio::error_code ignored_ec;
-  clear(impl, ignored_ec);
-  cancel(impl, ignored_ec);
-}
-
-asio::error_code signal_set_service::add(
-    signal_set_service::implementation_type& impl,
-    int signal_number, asio::error_code& ec)
-{
-  // Check that the signal number is valid.
-  if (signal_number < 0 || signal_number >= max_signal_number)
-  {
-    ec = asio::error::invalid_argument;
-    return ec;
-  }
-
-  signal_state* state = get_signal_state();
-  static_mutex::scoped_lock lock(state->mutex_);
-
-  // Find the appropriate place to insert the registration.
-  registration** insertion_point = &impl.signals_;
-  registration* next = impl.signals_;
-  while (next && next->signal_number_ < signal_number)
-  {
-    insertion_point = &next->next_in_set_;
-    next = next->next_in_set_;
-  }
-
-  // Only do something if the signal is not already registered.
-  if (next == 0 || next->signal_number_ != signal_number)
-  {
-    registration* new_registration = new registration;
-
-#if defined(ASIO_HAS_SIGNAL) || defined(ASIO_HAS_SIGACTION)
-    // Register for the signal if we're the first.
-    if (state->registration_count_[signal_number] == 0)
-    {
-# if defined(ASIO_HAS_SIGACTION)
-      using namespace std; // For memset.
-      struct sigaction sa;
-      memset(&sa, 0, sizeof(sa));
-      sa.sa_handler = asio_signal_handler;
-      sigfillset(&sa.sa_mask);
-      if (::sigaction(signal_number, &sa, 0) == -1)
-# else // defined(ASIO_HAS_SIGACTION)
-      if (::signal(signal_number, asio_signal_handler) == SIG_ERR)
-# endif // defined(ASIO_HAS_SIGACTION)
-      {
-# if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-        ec = asio::error::invalid_argument;
-# else // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-        ec = asio::error_code(errno,
-            asio::error::get_system_category());
-# endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-        delete new_registration;
-        return ec;
-      }
-    }
-#endif // defined(ASIO_HAS_SIGNAL) || defined(ASIO_HAS_SIGACTION)
-
-    // Record the new registration in the set.
-    new_registration->signal_number_ = signal_number;
-    new_registration->queue_ = &impl.queue_;
-    new_registration->next_in_set_ = next;
-    *insertion_point = new_registration;
-
-    // Insert registration into the registration table.
-    new_registration->next_in_table_ = registrations_[signal_number];
-    if (registrations_[signal_number])
-      registrations_[signal_number]->prev_in_table_ = new_registration;
-    registrations_[signal_number] = new_registration;
-
-    ++state->registration_count_[signal_number];
-  }
-
-  ec = asio::error_code();
-  return ec;
-}
-
-asio::error_code signal_set_service::remove(
-    signal_set_service::implementation_type& impl,
-    int signal_number, asio::error_code& ec)
-{
-  // Check that the signal number is valid.
-  if (signal_number < 0 || signal_number >= max_signal_number)
-  {
-    ec = asio::error::invalid_argument;
-    return ec;
-  }
-
-  signal_state* state = get_signal_state();
-  static_mutex::scoped_lock lock(state->mutex_);
-
-  // Find the signal number in the list of registrations.
-  registration** deletion_point = &impl.signals_;
-  registration* reg = impl.signals_;
-  while (reg && reg->signal_number_ < signal_number)
-  {
-    deletion_point = &reg->next_in_set_;
-    reg = reg->next_in_set_;
-  }
-
-  if (reg != 0 && reg->signal_number_ == signal_number)
-  {
-#if defined(ASIO_HAS_SIGNAL) || defined(ASIO_HAS_SIGACTION)
-    // Set signal handler back to the default if we're the last.
-    if (state->registration_count_[signal_number] == 1)
-    {
-# if defined(ASIO_HAS_SIGACTION)
-      using namespace std; // For memset.
-      struct sigaction sa;
-      memset(&sa, 0, sizeof(sa));
-      sa.sa_handler = SIG_DFL;
-      if (::sigaction(signal_number, &sa, 0) == -1)
-# else // defined(ASIO_HAS_SIGACTION)
-      if (::signal(signal_number, SIG_DFL) == SIG_ERR)
-# endif // defined(ASIO_HAS_SIGACTION)
-      {
-# if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-        ec = asio::error::invalid_argument;
-# else // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-        ec = asio::error_code(errno,
-            asio::error::get_system_category());
-# endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-        return ec;
-      }
-    }
-#endif // defined(ASIO_HAS_SIGNAL) || defined(ASIO_HAS_SIGACTION)
-
-    // Remove the registration from the set.
-    *deletion_point = reg->next_in_set_;
-
-    // Remove the registration from the registration table.
-    if (registrations_[signal_number] == reg)
-      registrations_[signal_number] = reg->next_in_table_;
-    if (reg->prev_in_table_)
-      reg->prev_in_table_->next_in_table_ = reg->next_in_table_;
-    if (reg->next_in_table_)
-      reg->next_in_table_->prev_in_table_ = reg->prev_in_table_;
-
-    --state->registration_count_[signal_number];
-
-    delete reg;
-  }
-
-  ec = asio::error_code();
-  return ec;
-}
-
-asio::error_code signal_set_service::clear(
-    signal_set_service::implementation_type& impl,
-    asio::error_code& ec)
-{
-  signal_state* state = get_signal_state();
-  static_mutex::scoped_lock lock(state->mutex_);
-
-  while (registration* reg = impl.signals_)
-  {
-#if defined(ASIO_HAS_SIGNAL) || defined(ASIO_HAS_SIGACTION)
-    // Set signal handler back to the default if we're the last.
-    if (state->registration_count_[reg->signal_number_] == 1)
-    {
-# if defined(ASIO_HAS_SIGACTION)
-      using namespace std; // For memset.
-      struct sigaction sa;
-      memset(&sa, 0, sizeof(sa));
-      sa.sa_handler = SIG_DFL;
-      if (::sigaction(reg->signal_number_, &sa, 0) == -1)
-# else // defined(ASIO_HAS_SIGACTION)
-      if (::signal(reg->signal_number_, SIG_DFL) == SIG_ERR)
-# endif // defined(ASIO_HAS_SIGACTION)
-      {
-# if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-        ec = asio::error::invalid_argument;
-# else // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-        ec = asio::error_code(errno,
-            asio::error::get_system_category());
-# endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-        return ec;
-      }
-    }
-#endif // defined(ASIO_HAS_SIGNAL) || defined(ASIO_HAS_SIGACTION)
-
-    // Remove the registration from the registration table.
-    if (registrations_[reg->signal_number_] == reg)
-      registrations_[reg->signal_number_] = reg->next_in_table_;
-    if (reg->prev_in_table_)
-      reg->prev_in_table_->next_in_table_ = reg->next_in_table_;
-    if (reg->next_in_table_)
-      reg->next_in_table_->prev_in_table_ = reg->prev_in_table_;
-
-    --state->registration_count_[reg->signal_number_];
-
-    impl.signals_ = reg->next_in_set_;
-    delete reg;
-  }
-
-  ec = asio::error_code();
-  return ec;
-}
-
-asio::error_code signal_set_service::cancel(
-    signal_set_service::implementation_type& impl,
-    asio::error_code& ec)
-{
-  ASIO_HANDLER_OPERATION((io_context_.context(),
-        "signal_set", &impl, 0, "cancel"));
-
-  op_queue<operation> ops;
-  {
-    signal_state* state = get_signal_state();
-    static_mutex::scoped_lock lock(state->mutex_);
-
-    while (signal_op* op = impl.queue_.front())
-    {
-      op->ec_ = asio::error::operation_aborted;
-      impl.queue_.pop();
-      ops.push(op);
-    }
-  }
-
-  io_context_.post_deferred_completions(ops);
-
-  ec = asio::error_code();
-  return ec;
-}
-
-void signal_set_service::deliver_signal(int signal_number)
-{
-  signal_state* state = get_signal_state();
-  static_mutex::scoped_lock lock(state->mutex_);
-
-  signal_set_service* service = state->service_list_;
-  while (service)
-  {
-    op_queue<operation> ops;
-
-    registration* reg = service->registrations_[signal_number];
-    while (reg)
-    {
-      if (reg->queue_->empty())
-      {
-        ++reg->undelivered_;
-      }
-      else
-      {
-        while (signal_op* op = reg->queue_->front())
-        {
-          op->signal_number_ = signal_number;
-          reg->queue_->pop();
-          ops.push(op);
-        }
-      }
-
-      reg = reg->next_in_table_;
-    }
-
-    service->io_context_.post_deferred_completions(ops);
-
-    service = service->next_;
-  }
-}
-
-void signal_set_service::add_service(signal_set_service* service)
-{
-  signal_state* state = get_signal_state();
-  static_mutex::scoped_lock lock(state->mutex_);
-
-#if !defined(ASIO_WINDOWS) && !defined(__CYGWIN__)
-  // If this is the first service to be created, open a new pipe.
-  if (state->service_list_ == 0)
-    open_descriptors();
-#endif // !defined(ASIO_WINDOWS) && !defined(__CYGWIN__)
-
-  // If an io_context object is thread-unsafe then it must be the only
-  // io_context used to create signal_set objects.
-  if (state->service_list_ != 0)
-  {
-    if (!ASIO_CONCURRENCY_HINT_IS_LOCKING(SCHEDULER,
-          service->io_context_.concurrency_hint())
-        || !ASIO_CONCURRENCY_HINT_IS_LOCKING(SCHEDULER,
-          state->service_list_->io_context_.concurrency_hint()))
-    {
-      std::logic_error ex(
-          "Thread-unsafe io_context objects require "
-          "exclusive access to signal handling.");
-      asio::detail::throw_exception(ex);
-    }
-  }
-
-  // Insert service into linked list of all services.
-  service->next_ = state->service_list_;
-  service->prev_ = 0;
-  if (state->service_list_)
-    state->service_list_->prev_ = service;
-  state->service_list_ = service;
-
-#if !defined(ASIO_WINDOWS) \
-  && !defined(ASIO_WINDOWS_RUNTIME) \
-  && !defined(__CYGWIN__)
-  // Register for pipe readiness notifications.
-  int read_descriptor = state->read_descriptor_;
-  lock.unlock();
-  service->reactor_.register_internal_descriptor(reactor::read_op,
-      read_descriptor, service->reactor_data_, new pipe_read_op);
-#endif // !defined(ASIO_WINDOWS)
-       //   && !defined(ASIO_WINDOWS_RUNTIME)
-       //   && !defined(__CYGWIN__)
-}
-
-void signal_set_service::remove_service(signal_set_service* service)
-{
-  signal_state* state = get_signal_state();
-  static_mutex::scoped_lock lock(state->mutex_);
-
-  if (service->next_ || service->prev_ || state->service_list_ == service)
-  {
-#if !defined(ASIO_WINDOWS) \
-  && !defined(ASIO_WINDOWS_RUNTIME) \
-  && !defined(__CYGWIN__)
-    // Disable the pipe readiness notifications.
-    int read_descriptor = state->read_descriptor_;
-    lock.unlock();
-    service->reactor_.deregister_internal_descriptor(
-        read_descriptor, service->reactor_data_);
-    service->reactor_.cleanup_descriptor_data(service->reactor_data_);
-    lock.lock();
-#endif // !defined(ASIO_WINDOWS)
-       //   && !defined(ASIO_WINDOWS_RUNTIME)
-       //   && !defined(__CYGWIN__)
-
-    // Remove service from linked list of all services.
-    if (state->service_list_ == service)
-      state->service_list_ = service->next_;
-    if (service->prev_)
-      service->prev_->next_ = service->next_;
-    if (service->next_)
-      service->next_->prev_= service->prev_;
-    service->next_ = 0;
-    service->prev_ = 0;
-
-#if !defined(ASIO_WINDOWS) && !defined(__CYGWIN__)
-    // If this is the last service to be removed, close the pipe.
-    if (state->service_list_ == 0)
-      close_descriptors();
-#endif // !defined(ASIO_WINDOWS) && !defined(__CYGWIN__)
-  }
-}
-
-void signal_set_service::open_descriptors()
-{
-#if !defined(ASIO_WINDOWS) \
-  && !defined(ASIO_WINDOWS_RUNTIME) \
-  && !defined(__CYGWIN__)
-  signal_state* state = get_signal_state();
-
-  int pipe_fds[2];
-  if (::pipe(pipe_fds) == 0)
-  {
-    state->read_descriptor_ = pipe_fds[0];
-    ::fcntl(state->read_descriptor_, F_SETFL, O_NONBLOCK);
-
-    state->write_descriptor_ = pipe_fds[1];
-    ::fcntl(state->write_descriptor_, F_SETFL, O_NONBLOCK);
-
-#if defined(FD_CLOEXEC)
-    ::fcntl(state->read_descriptor_, F_SETFD, FD_CLOEXEC);
-    ::fcntl(state->write_descriptor_, F_SETFD, FD_CLOEXEC);
-#endif // defined(FD_CLOEXEC)
-  }
-  else
-  {
-    asio::error_code ec(errno,
-        asio::error::get_system_category());
-    asio::detail::throw_error(ec, "signal_set_service pipe");
-  }
-#endif // !defined(ASIO_WINDOWS)
-       //   && !defined(ASIO_WINDOWS_RUNTIME)
-       //   && !defined(__CYGWIN__)
-}
-
-void signal_set_service::close_descriptors()
-{
-#if !defined(ASIO_WINDOWS) \
-  && !defined(ASIO_WINDOWS_RUNTIME) \
-  && !defined(__CYGWIN__)
-  signal_state* state = get_signal_state();
-
-  if (state->read_descriptor_ != -1)
-    ::close(state->read_descriptor_);
-  state->read_descriptor_ = -1;
-
-  if (state->write_descriptor_ != -1)
-    ::close(state->write_descriptor_);
-  state->write_descriptor_ = -1;
-#endif // !defined(ASIO_WINDOWS)
-       //   && !defined(ASIO_WINDOWS_RUNTIME)
-       //   && !defined(__CYGWIN__)
-}
-
-void signal_set_service::start_wait_op(
-    signal_set_service::implementation_type& impl, signal_op* op)
-{
-  io_context_.work_started();
-
-  signal_state* state = get_signal_state();
-  static_mutex::scoped_lock lock(state->mutex_);
-
-  registration* reg = impl.signals_;
-  while (reg)
-  {
-    if (reg->undelivered_ > 0)
-    {
-      --reg->undelivered_;
-      op->signal_number_ = reg->signal_number_;
-      io_context_.post_deferred_completion(op);
-      return;
-    }
-
-    reg = reg->next_in_set_;
-  }
-
-  impl.queue_.push(op);
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_DETAIL_IMPL_SIGNAL_SET_SERVICE_IPP
diff --git a/lib/asio/detail/impl/socket_ops.ipp b/lib/asio/detail/impl/socket_ops.ipp
deleted file mode 100644
index 5e74733..0000000
--- a/lib/asio/detail/impl/socket_ops.ipp
+++ /dev/null
@@ -1,3571 +0,0 @@
-//
-// detail/impl/socket_ops.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_SOCKET_OPS_IPP
-#define ASIO_DETAIL_SOCKET_OPS_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#include <cctype>
-#include <cstdio>
-#include <cstdlib>
-#include <cstring>
-#include <cerrno>
-#include <new>
-#include "asio/detail/assert.hpp"
-#include "asio/detail/socket_ops.hpp"
-#include "asio/error.hpp"
-
-#if defined(ASIO_WINDOWS_RUNTIME)
-# include <codecvt>
-# include <locale>
-# include <string>
-#endif // defined(ASIO_WINDOWS_RUNTIME)
-
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__) \
-  || defined(__MACH__) && defined(__APPLE__)
-# if defined(ASIO_HAS_PTHREADS)
-#  include <pthread.h>
-# endif // defined(ASIO_HAS_PTHREADS)
-#endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-       // || defined(__MACH__) && defined(__APPLE__)
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-namespace socket_ops {
-
-#if !defined(ASIO_WINDOWS_RUNTIME)
-
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-struct msghdr { int msg_namelen; };
-#endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-
-#if defined(__hpux)
-// HP-UX doesn't declare these functions extern "C", so they are declared again
-// here to avoid linker errors about undefined symbols.
-extern "C" char* if_indextoname(unsigned int, char*);
-extern "C" unsigned int if_nametoindex(const char*);
-#endif // defined(__hpux)
-
-#endif // !defined(ASIO_WINDOWS_RUNTIME)
-
-inline void clear_last_error()
-{
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  WSASetLastError(0);
-#else
-  errno = 0;
-#endif
-}
-
-#if !defined(ASIO_WINDOWS_RUNTIME)
-
-template <typename ReturnType>
-inline ReturnType error_wrapper(ReturnType return_value,
-    asio::error_code& ec)
-{
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  ec = asio::error_code(WSAGetLastError(),
-      asio::error::get_system_category());
-#else
-  ec = asio::error_code(errno,
-      asio::error::get_system_category());
-#endif
-  return return_value;
-}
-
-template <typename SockLenType>
-inline socket_type call_accept(SockLenType msghdr::*,
-    socket_type s, socket_addr_type* addr, std::size_t* addrlen)
-{
-  SockLenType tmp_addrlen = addrlen ? (SockLenType)*addrlen : 0;
-  socket_type result = ::accept(s, addr, addrlen ? &tmp_addrlen : 0);
-  if (addrlen)
-    *addrlen = (std::size_t)tmp_addrlen;
-  return result;
-}
-
-socket_type accept(socket_type s, socket_addr_type* addr,
-    std::size_t* addrlen, asio::error_code& ec)
-{
-  if (s == invalid_socket)
-  {
-    ec = asio::error::bad_descriptor;
-    return invalid_socket;
-  }
-
-  clear_last_error();
-
-  socket_type new_s = error_wrapper(call_accept(
-        &msghdr::msg_namelen, s, addr, addrlen), ec);
-  if (new_s == invalid_socket)
-    return new_s;
-
-#if defined(__MACH__) && defined(__APPLE__) || defined(__FreeBSD__)
-  int optval = 1;
-  int result = error_wrapper(::setsockopt(new_s,
-        SOL_SOCKET, SO_NOSIGPIPE, &optval, sizeof(optval)), ec);
-  if (result != 0)
-  {
-    ::close(new_s);
-    return invalid_socket;
-  }
-#endif
-
-  ec = asio::error_code();
-  return new_s;
-}
-
-socket_type sync_accept(socket_type s, state_type state,
-    socket_addr_type* addr, std::size_t* addrlen, asio::error_code& ec)
-{
-  // Accept a socket.
-  for (;;)
-  {
-    // Try to complete the operation without blocking.
-    socket_type new_socket = socket_ops::accept(s, addr, addrlen, ec);
-
-    // Check if operation succeeded.
-    if (new_socket != invalid_socket)
-      return new_socket;
-
-    // Operation failed.
-    if (ec == asio::error::would_block
-        || ec == asio::error::try_again)
-    {
-      if (state & user_set_non_blocking)
-        return invalid_socket;
-      // Fall through to retry operation.
-    }
-    else if (ec == asio::error::connection_aborted)
-    {
-      if (state & enable_connection_aborted)
-        return invalid_socket;
-      // Fall through to retry operation.
-    }
-#if defined(EPROTO)
-    else if (ec.value() == EPROTO)
-    {
-      if (state & enable_connection_aborted)
-        return invalid_socket;
-      // Fall through to retry operation.
-    }
-#endif // defined(EPROTO)
-    else
-      return invalid_socket;
-
-    // Wait for socket to become ready.
-    if (socket_ops::poll_read(s, 0, -1, ec) < 0)
-      return invalid_socket;
-  }
-}
-
-#if defined(ASIO_HAS_IOCP)
-
-void complete_iocp_accept(socket_type s,
-    void* output_buffer, DWORD address_length,
-    socket_addr_type* addr, std::size_t* addrlen,
-    socket_type new_socket, asio::error_code& ec)
-{
-  // Map non-portable errors to their portable counterparts.
-  if (ec.value() == ERROR_NETNAME_DELETED)
-    ec = asio::error::connection_aborted;
-
-  if (!ec)
-  {
-    // Get the address of the peer.
-    if (addr && addrlen)
-    {
-      LPSOCKADDR local_addr = 0;
-      int local_addr_length = 0;
-      LPSOCKADDR remote_addr = 0;
-      int remote_addr_length = 0;
-      GetAcceptExSockaddrs(output_buffer, 0, address_length,
-          address_length, &local_addr, &local_addr_length,
-          &remote_addr, &remote_addr_length);
-      if (static_cast<std::size_t>(remote_addr_length) > *addrlen)
-      {
-        ec = asio::error::invalid_argument;
-      }
-      else
-      {
-        using namespace std; // For memcpy.
-        memcpy(addr, remote_addr, remote_addr_length);
-        *addrlen = 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.
-    SOCKET update_ctx_param = s;
-    socket_ops::state_type state = 0;
-    socket_ops::setsockopt(new_socket, state,
-          SOL_SOCKET, SO_UPDATE_ACCEPT_CONTEXT,
-          &update_ctx_param, sizeof(SOCKET), ec);
-  }
-}
-
-#else // defined(ASIO_HAS_IOCP)
-
-bool non_blocking_accept(socket_type s,
-    state_type state, socket_addr_type* addr, std::size_t* addrlen,
-    asio::error_code& ec, socket_type& new_socket)
-{
-  for (;;)
-  {
-    // Accept the waiting connection.
-    new_socket = socket_ops::accept(s, addr, addrlen, ec);
-
-    // Check if operation succeeded.
-    if (new_socket != invalid_socket)
-      return true;
-
-    // Retry operation if interrupted by signal.
-    if (ec == asio::error::interrupted)
-      continue;
-
-    // Operation failed.
-    if (ec == asio::error::would_block
-        || ec == asio::error::try_again)
-    {
-      // Fall through to retry operation.
-    }
-    else if (ec == asio::error::connection_aborted)
-    {
-      if (state & enable_connection_aborted)
-        return true;
-      // Fall through to retry operation.
-    }
-#if defined(EPROTO)
-    else if (ec.value() == EPROTO)
-    {
-      if (state & enable_connection_aborted)
-        return true;
-      // Fall through to retry operation.
-    }
-#endif // defined(EPROTO)
-    else
-      return true;
-
-    return false;
-  }
-}
-
-#endif // defined(ASIO_HAS_IOCP)
-
-template <typename SockLenType>
-inline int call_bind(SockLenType msghdr::*,
-    socket_type s, const socket_addr_type* addr, std::size_t addrlen)
-{
-  return ::bind(s, addr, (SockLenType)addrlen);
-}
-
-int bind(socket_type s, const socket_addr_type* addr,
-    std::size_t addrlen, asio::error_code& ec)
-{
-  if (s == invalid_socket)
-  {
-    ec = asio::error::bad_descriptor;
-    return socket_error_retval;
-  }
-
-  clear_last_error();
-  int result = error_wrapper(call_bind(
-        &msghdr::msg_namelen, s, addr, addrlen), ec);
-  if (result == 0)
-    ec = asio::error_code();
-  return result;
-}
-
-int close(socket_type s, state_type& state,
-    bool destruction, asio::error_code& ec)
-{
-  int result = 0;
-  if (s != invalid_socket)
-  {
-    // We don't want the destructor to block, so set the socket to linger in
-    // the background. If the user doesn't like this behaviour then they need
-    // to explicitly close the socket.
-    if (destruction && (state & user_set_linger))
-    {
-      ::linger opt;
-      opt.l_onoff = 0;
-      opt.l_linger = 0;
-      asio::error_code ignored_ec;
-      socket_ops::setsockopt(s, state, SOL_SOCKET,
-          SO_LINGER, &opt, sizeof(opt), ignored_ec);
-    }
-
-    clear_last_error();
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-    result = error_wrapper(::closesocket(s), ec);
-#else // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-    result = error_wrapper(::close(s), ec);
-#endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-
-    if (result != 0
-        && (ec == asio::error::would_block
-          || ec == asio::error::try_again))
-    {
-      // According to UNIX Network Programming Vol. 1, it is possible for
-      // close() to fail with EWOULDBLOCK under certain circumstances. What
-      // isn't clear is the state of the descriptor after this error. The one
-      // current OS where this behaviour is seen, Windows, says that the socket
-      // remains open. Therefore we'll put the descriptor back into blocking
-      // mode and have another attempt at closing it.
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-      ioctl_arg_type arg = 0;
-      ::ioctlsocket(s, FIONBIO, &arg);
-#else // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-# if defined(__SYMBIAN32__)
-      int flags = ::fcntl(s, F_GETFL, 0);
-      if (flags >= 0)
-        ::fcntl(s, F_SETFL, flags & ~O_NONBLOCK);
-# else // defined(__SYMBIAN32__)
-      ioctl_arg_type arg = 0;
-      ::ioctl(s, FIONBIO, &arg);
-# endif // defined(__SYMBIAN32__)
-#endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-      state &= ~non_blocking;
-
-      clear_last_error();
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-      result = error_wrapper(::closesocket(s), ec);
-#else // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-      result = error_wrapper(::close(s), ec);
-#endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-    }
-  }
-
-  if (result == 0)
-    ec = asio::error_code();
-  return result;
-}
-
-bool set_user_non_blocking(socket_type s,
-    state_type& state, bool value, asio::error_code& ec)
-{
-  if (s == invalid_socket)
-  {
-    ec = asio::error::bad_descriptor;
-    return false;
-  }
-
-  clear_last_error();
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  ioctl_arg_type arg = (value ? 1 : 0);
-  int result = error_wrapper(::ioctlsocket(s, FIONBIO, &arg), ec);
-#elif defined(__SYMBIAN32__)
-  int result = error_wrapper(::fcntl(s, F_GETFL, 0), ec);
-  if (result >= 0)
-  {
-    clear_last_error();
-    int flag = (value ? (result | O_NONBLOCK) : (result & ~O_NONBLOCK));
-    result = error_wrapper(::fcntl(s, F_SETFL, flag), ec);
-  }
-#else
-  ioctl_arg_type arg = (value ? 1 : 0);
-  int result = error_wrapper(::ioctl(s, FIONBIO, &arg), ec);
-#endif
-
-  if (result >= 0)
-  {
-    ec = asio::error_code();
-    if (value)
-      state |= user_set_non_blocking;
-    else
-    {
-      // Clearing the user-set non-blocking mode always overrides any
-      // internally-set non-blocking flag. Any subsequent asynchronous
-      // operations will need to re-enable non-blocking I/O.
-      state &= ~(user_set_non_blocking | internal_non_blocking);
-    }
-    return true;
-  }
-
-  return false;
-}
-
-bool set_internal_non_blocking(socket_type s,
-    state_type& state, bool value, asio::error_code& ec)
-{
-  if (s == invalid_socket)
-  {
-    ec = asio::error::bad_descriptor;
-    return false;
-  }
-
-  if (!value && (state & user_set_non_blocking))
-  {
-    // It does not make sense to clear the internal non-blocking flag if the
-    // user still wants non-blocking behaviour. Return an error and let the
-    // caller figure out whether to update the user-set non-blocking flag.
-    ec = asio::error::invalid_argument;
-    return false;
-  }
-
-  clear_last_error();
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  ioctl_arg_type arg = (value ? 1 : 0);
-  int result = error_wrapper(::ioctlsocket(s, FIONBIO, &arg), ec);
-#elif defined(__SYMBIAN32__)
-  int result = error_wrapper(::fcntl(s, F_GETFL, 0), ec);
-  if (result >= 0)
-  {
-    clear_last_error();
-    int flag = (value ? (result | O_NONBLOCK) : (result & ~O_NONBLOCK));
-    result = error_wrapper(::fcntl(s, F_SETFL, flag), ec);
-  }
-#else
-  ioctl_arg_type arg = (value ? 1 : 0);
-  int result = error_wrapper(::ioctl(s, FIONBIO, &arg), ec);
-#endif
-
-  if (result >= 0)
-  {
-    ec = asio::error_code();
-    if (value)
-      state |= internal_non_blocking;
-    else
-      state &= ~internal_non_blocking;
-    return true;
-  }
-
-  return false;
-}
-
-int shutdown(socket_type s, int what, asio::error_code& ec)
-{
-  if (s == invalid_socket)
-  {
-    ec = asio::error::bad_descriptor;
-    return socket_error_retval;
-  }
-
-  clear_last_error();
-  int result = error_wrapper(::shutdown(s, what), ec);
-  if (result == 0)
-    ec = asio::error_code();
-  return result;
-}
-
-template <typename SockLenType>
-inline int call_connect(SockLenType msghdr::*,
-    socket_type s, const socket_addr_type* addr, std::size_t addrlen)
-{
-  return ::connect(s, addr, (SockLenType)addrlen);
-}
-
-int connect(socket_type s, const socket_addr_type* addr,
-    std::size_t addrlen, asio::error_code& ec)
-{
-  if (s == invalid_socket)
-  {
-    ec = asio::error::bad_descriptor;
-    return socket_error_retval;
-  }
-
-  clear_last_error();
-  int result = error_wrapper(call_connect(
-        &msghdr::msg_namelen, s, addr, addrlen), ec);
-  if (result == 0)
-    ec = asio::error_code();
-#if defined(__linux__)
-  else if (ec == asio::error::try_again)
-    ec = asio::error::no_buffer_space;
-#endif // defined(__linux__)
-  return result;
-}
-
-void sync_connect(socket_type s, const socket_addr_type* addr,
-    std::size_t addrlen, asio::error_code& ec)
-{
-  // Perform the connect operation.
-  socket_ops::connect(s, addr, addrlen, ec);
-  if (ec != asio::error::in_progress
-      && ec != asio::error::would_block)
-  {
-    // The connect operation finished immediately.
-    return;
-  }
-
-  // Wait for socket to become ready.
-  if (socket_ops::poll_connect(s, -1, ec) < 0)
-    return;
-
-  // Get the error code from the connect operation.
-  int connect_error = 0;
-  size_t connect_error_len = sizeof(connect_error);
-  if (socket_ops::getsockopt(s, 0, SOL_SOCKET, SO_ERROR,
-        &connect_error, &connect_error_len, ec) == socket_error_retval)
-    return;
-
-  // Return the result of the connect operation.
-  ec = asio::error_code(connect_error,
-      asio::error::get_system_category());
-}
-
-#if defined(ASIO_HAS_IOCP)
-
-void complete_iocp_connect(socket_type s, asio::error_code& ec)
-{
-  // Map non-portable errors to their portable counterparts.
-  switch (ec.value())
-  {
-  case ERROR_CONNECTION_REFUSED:
-    ec = asio::error::connection_refused;
-    break;
-  case ERROR_NETWORK_UNREACHABLE:
-    ec = asio::error::network_unreachable;
-    break;
-  case ERROR_HOST_UNREACHABLE:
-    ec = asio::error::host_unreachable;
-    break;
-  case ERROR_SEM_TIMEOUT:
-    ec = asio::error::timed_out;
-    break;
-  default:
-    break;
-  }
-
-  if (!ec)
-  {
-    // Need to set the SO_UPDATE_CONNECT_CONTEXT option so that getsockname
-    // and getpeername will work on the connected socket.
-    socket_ops::state_type state = 0;
-    const int so_update_connect_context = 0x7010;
-    socket_ops::setsockopt(s, state, SOL_SOCKET,
-        so_update_connect_context, 0, 0, ec);
-  }
-}
-
-#endif // defined(ASIO_HAS_IOCP)
-
-bool non_blocking_connect(socket_type s, asio::error_code& ec)
-{
-  // Check if the connect operation has finished. This is required since we may
-  // get spurious readiness notifications from the reactor.
-#if defined(ASIO_WINDOWS) \
-  || defined(__CYGWIN__) \
-  || defined(__SYMBIAN32__)
-  fd_set write_fds;
-  FD_ZERO(&write_fds);
-  FD_SET(s, &write_fds);
-  fd_set except_fds;
-  FD_ZERO(&except_fds);
-  FD_SET(s, &except_fds);
-  timeval zero_timeout;
-  zero_timeout.tv_sec = 0;
-  zero_timeout.tv_usec = 0;
-  int ready = ::select(s + 1, 0, &write_fds, &except_fds, &zero_timeout);
-#else // defined(ASIO_WINDOWS)
-      // || defined(__CYGWIN__)
-      // || defined(__SYMBIAN32__)
-  pollfd fds;
-  fds.fd = s;
-  fds.events = POLLOUT;
-  fds.revents = 0;
-  int ready = ::poll(&fds, 1, 0);
-#endif // defined(ASIO_WINDOWS)
-       // || defined(__CYGWIN__)
-       // || defined(__SYMBIAN32__)
-  if (ready == 0)
-  {
-    // The asynchronous connect operation is still in progress.
-    return false;
-  }
-
-  // Get the error code from the connect operation.
-  int connect_error = 0;
-  size_t connect_error_len = sizeof(connect_error);
-  if (socket_ops::getsockopt(s, 0, SOL_SOCKET, SO_ERROR,
-        &connect_error, &connect_error_len, ec) == 0)
-  {
-    if (connect_error)
-    {
-      ec = asio::error_code(connect_error,
-          asio::error::get_system_category());
-    }
-    else
-      ec = asio::error_code();
-  }
-
-  return true;
-}
-
-int socketpair(int af, int type, int protocol,
-    socket_type sv[2], asio::error_code& ec)
-{
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  (void)(af);
-  (void)(type);
-  (void)(protocol);
-  (void)(sv);
-  ec = asio::error::operation_not_supported;
-  return socket_error_retval;
-#else
-  clear_last_error();
-  int result = error_wrapper(::socketpair(af, type, protocol, sv), ec);
-  if (result == 0)
-    ec = asio::error_code();
-  return result;
-#endif
-}
-
-bool sockatmark(socket_type s, asio::error_code& ec)
-{
-  if (s == invalid_socket)
-  {
-    ec = asio::error::bad_descriptor;
-    return false;
-  }
-
-#if defined(SIOCATMARK)
-  ioctl_arg_type value = 0;
-# if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  int result = error_wrapper(::ioctlsocket(s, SIOCATMARK, &value), ec);
-# else // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  int result = error_wrapper(::ioctl(s, SIOCATMARK, &value), ec);
-# endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  if (result == 0)
-    ec = asio::error_code();
-# if defined(ENOTTY)
-  if (ec.value() == ENOTTY)
-    ec = asio::error::not_socket;
-# endif // defined(ENOTTY)
-#else // defined(SIOCATMARK)
-  int value = error_wrapper(::sockatmark(s), ec);
-  if (value != -1)
-    ec = asio::error_code();
-#endif // defined(SIOCATMARK)
-
-  return ec ? false : value != 0;
-}
-
-size_t available(socket_type s, asio::error_code& ec)
-{
-  if (s == invalid_socket)
-  {
-    ec = asio::error::bad_descriptor;
-    return 0;
-  }
-
-  ioctl_arg_type value = 0;
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  int result = error_wrapper(::ioctlsocket(s, FIONREAD, &value), ec);
-#else // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  int result = error_wrapper(::ioctl(s, FIONREAD, &value), ec);
-#endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  if (result == 0)
-    ec = asio::error_code();
-#if defined(ENOTTY)
-  if (ec.value() == ENOTTY)
-    ec = asio::error::not_socket;
-#endif // defined(ENOTTY)
-
-  return ec ? static_cast<size_t>(0) : static_cast<size_t>(value);
-}
-
-int listen(socket_type s, int backlog, asio::error_code& ec)
-{
-  if (s == invalid_socket)
-  {
-    ec = asio::error::bad_descriptor;
-    return socket_error_retval;
-  }
-
-  clear_last_error();
-  int result = error_wrapper(::listen(s, backlog), ec);
-  if (result == 0)
-    ec = asio::error_code();
-  return result;
-}
-
-inline void init_buf_iov_base(void*& base, void* addr)
-{
-  base = addr;
-}
-
-template <typename T>
-inline void init_buf_iov_base(T& base, void* addr)
-{
-  base = static_cast<T>(addr);
-}
-
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-typedef WSABUF buf;
-#else // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-typedef iovec buf;
-#endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-
-void init_buf(buf& b, void* data, size_t size)
-{
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  b.buf = static_cast<char*>(data);
-  b.len = static_cast<u_long>(size);
-#else // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  init_buf_iov_base(b.iov_base, data);
-  b.iov_len = size;
-#endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-}
-
-void init_buf(buf& b, const void* data, size_t size)
-{
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  b.buf = static_cast<char*>(const_cast<void*>(data));
-  b.len = static_cast<u_long>(size);
-#else // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  init_buf_iov_base(b.iov_base, const_cast<void*>(data));
-  b.iov_len = size;
-#endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-}
-
-inline void init_msghdr_msg_name(void*& name, socket_addr_type* addr)
-{
-  name = addr;
-}
-
-inline void init_msghdr_msg_name(void*& name, const socket_addr_type* addr)
-{
-  name = const_cast<socket_addr_type*>(addr);
-}
-
-template <typename T>
-inline void init_msghdr_msg_name(T& name, socket_addr_type* addr)
-{
-  name = reinterpret_cast<T>(addr);
-}
-
-template <typename T>
-inline void init_msghdr_msg_name(T& name, const socket_addr_type* addr)
-{
-  name = reinterpret_cast<T>(const_cast<socket_addr_type*>(addr));
-}
-
-signed_size_type recv(socket_type s, buf* bufs, size_t count,
-    int flags, asio::error_code& ec)
-{
-  clear_last_error();
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  // Receive some data.
-  DWORD recv_buf_count = static_cast<DWORD>(count);
-  DWORD bytes_transferred = 0;
-  DWORD recv_flags = flags;
-  int result = error_wrapper(::WSARecv(s, bufs,
-        recv_buf_count, &bytes_transferred, &recv_flags, 0, 0), ec);
-  if (ec.value() == ERROR_NETNAME_DELETED)
-    ec = asio::error::connection_reset;
-  else if (ec.value() == ERROR_PORT_UNREACHABLE)
-    ec = asio::error::connection_refused;
-  else if (ec.value() == WSAEMSGSIZE || ec.value() == ERROR_MORE_DATA)
-    ec.assign(0, ec.category());
-  if (result != 0)
-    return socket_error_retval;
-  ec = asio::error_code();
-  return bytes_transferred;
-#else // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  msghdr msg = msghdr();
-  msg.msg_iov = bufs;
-  msg.msg_iovlen = static_cast<int>(count);
-  signed_size_type result = error_wrapper(::recvmsg(s, &msg, flags), ec);
-  if (result >= 0)
-    ec = asio::error_code();
-  return result;
-#endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-}
-
-size_t sync_recv(socket_type s, state_type state, buf* bufs,
-    size_t count, int flags, bool all_empty, asio::error_code& ec)
-{
-  if (s == invalid_socket)
-  {
-    ec = asio::error::bad_descriptor;
-    return 0;
-  }
-
-  // A request to read 0 bytes on a stream is a no-op.
-  if (all_empty && (state & stream_oriented))
-  {
-    ec = asio::error_code();
-    return 0;
-  }
-
-  // Read some data.
-  for (;;)
-  {
-    // Try to complete the operation without blocking.
-    signed_size_type bytes = socket_ops::recv(s, bufs, count, flags, ec);
-
-    // Check if operation succeeded.
-    if (bytes > 0)
-      return bytes;
-
-    // Check for EOF.
-    if ((state & stream_oriented) && bytes == 0)
-    {
-      ec = asio::error::eof;
-      return 0;
-    }
-
-    // Operation failed.
-    if ((state & user_set_non_blocking)
-        || (ec != asio::error::would_block
-          && ec != asio::error::try_again))
-      return 0;
-
-    // Wait for socket to become ready.
-    if (socket_ops::poll_read(s, 0, -1, ec) < 0)
-      return 0;
-  }
-}
-
-#if defined(ASIO_HAS_IOCP)
-
-void complete_iocp_recv(state_type state,
-    const weak_cancel_token_type& cancel_token, bool all_empty,
-    asio::error_code& ec, size_t bytes_transferred)
-{
-  // Map non-portable errors to their portable counterparts.
-  if (ec.value() == ERROR_NETNAME_DELETED)
-  {
-    if (cancel_token.expired())
-      ec = asio::error::operation_aborted;
-    else
-      ec = asio::error::connection_reset;
-  }
-  else if (ec.value() == ERROR_PORT_UNREACHABLE)
-  {
-    ec = asio::error::connection_refused;
-  }
-  else if (ec.value() == WSAEMSGSIZE || ec.value() == ERROR_MORE_DATA)
-  {
-    ec.assign(0, ec.category());
-  }
-
-  // Check for connection closed.
-  else if (!ec && bytes_transferred == 0
-      && (state & stream_oriented) != 0
-      && !all_empty)
-  {
-    ec = asio::error::eof;
-  }
-}
-
-#else // defined(ASIO_HAS_IOCP)
-
-bool non_blocking_recv(socket_type s,
-    buf* bufs, size_t count, int flags, bool is_stream,
-    asio::error_code& ec, size_t& bytes_transferred)
-{
-  for (;;)
-  {
-    // Read some data.
-    signed_size_type bytes = socket_ops::recv(s, bufs, count, flags, ec);
-
-    // Check for end of stream.
-    if (is_stream && bytes == 0)
-    {
-      ec = asio::error::eof;
-      return true;
-    }
-
-    // Retry operation if interrupted by signal.
-    if (ec == asio::error::interrupted)
-      continue;
-
-    // Check if we need to run the operation again.
-    if (ec == asio::error::would_block
-        || ec == asio::error::try_again)
-      return false;
-
-    // Operation is complete.
-    if (bytes >= 0)
-    {
-      ec = asio::error_code();
-      bytes_transferred = bytes;
-    }
-    else
-      bytes_transferred = 0;
-
-    return true;
-  }
-}
-
-#endif // defined(ASIO_HAS_IOCP)
-
-signed_size_type recvfrom(socket_type s, buf* bufs, size_t count,
-    int flags, socket_addr_type* addr, std::size_t* addrlen,
-    asio::error_code& ec)
-{
-  clear_last_error();
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  // Receive some data.
-  DWORD recv_buf_count = static_cast<DWORD>(count);
-  DWORD bytes_transferred = 0;
-  DWORD recv_flags = flags;
-  int tmp_addrlen = (int)*addrlen;
-  int result = error_wrapper(::WSARecvFrom(s, bufs, recv_buf_count,
-        &bytes_transferred, &recv_flags, addr, &tmp_addrlen, 0, 0), ec);
-  *addrlen = (std::size_t)tmp_addrlen;
-  if (ec.value() == ERROR_NETNAME_DELETED)
-    ec = asio::error::connection_reset;
-  else if (ec.value() == ERROR_PORT_UNREACHABLE)
-    ec = asio::error::connection_refused;
-  else if (ec.value() == WSAEMSGSIZE || ec.value() == ERROR_MORE_DATA)
-    ec.assign(0, ec.category());
-  if (result != 0)
-    return socket_error_retval;
-  ec = asio::error_code();
-  return bytes_transferred;
-#else // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  msghdr msg = msghdr();
-  init_msghdr_msg_name(msg.msg_name, addr);
-  msg.msg_namelen = static_cast<int>(*addrlen);
-  msg.msg_iov = bufs;
-  msg.msg_iovlen = static_cast<int>(count);
-  signed_size_type result = error_wrapper(::recvmsg(s, &msg, flags), ec);
-  *addrlen = msg.msg_namelen;
-  if (result >= 0)
-    ec = asio::error_code();
-  return result;
-#endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-}
-
-size_t sync_recvfrom(socket_type s, state_type state, buf* bufs,
-    size_t count, int flags, socket_addr_type* addr,
-    std::size_t* addrlen, asio::error_code& ec)
-{
-  if (s == invalid_socket)
-  {
-    ec = asio::error::bad_descriptor;
-    return 0;
-  }
-
-  // Read some data.
-  for (;;)
-  {
-    // Try to complete the operation without blocking.
-    signed_size_type bytes = socket_ops::recvfrom(
-        s, bufs, count, flags, addr, addrlen, ec);
-
-    // Check if operation succeeded.
-    if (bytes >= 0)
-      return bytes;
-
-    // Operation failed.
-    if ((state & user_set_non_blocking)
-        || (ec != asio::error::would_block
-          && ec != asio::error::try_again))
-      return 0;
-
-    // Wait for socket to become ready.
-    if (socket_ops::poll_read(s, 0, -1, ec) < 0)
-      return 0;
-  }
-}
-
-#if defined(ASIO_HAS_IOCP)
-
-void complete_iocp_recvfrom(
-    const weak_cancel_token_type& cancel_token,
-    asio::error_code& ec)
-{
-  // Map non-portable errors to their portable counterparts.
-  if (ec.value() == ERROR_NETNAME_DELETED)
-  {
-    if (cancel_token.expired())
-      ec = asio::error::operation_aborted;
-    else
-      ec = asio::error::connection_reset;
-  }
-  else if (ec.value() == ERROR_PORT_UNREACHABLE)
-  {
-    ec = asio::error::connection_refused;
-  }
-  else if (ec.value() == WSAEMSGSIZE || ec.value() == ERROR_MORE_DATA)
-  {
-    ec.assign(0, ec.category());
-  }
-}
-
-#else // defined(ASIO_HAS_IOCP)
-
-bool non_blocking_recvfrom(socket_type s,
-    buf* bufs, size_t count, int flags,
-    socket_addr_type* addr, std::size_t* addrlen,
-    asio::error_code& ec, size_t& bytes_transferred)
-{
-  for (;;)
-  {
-    // Read some data.
-    signed_size_type bytes = socket_ops::recvfrom(
-        s, bufs, count, flags, addr, addrlen, ec);
-
-    // Retry operation if interrupted by signal.
-    if (ec == asio::error::interrupted)
-      continue;
-
-    // Check if we need to run the operation again.
-    if (ec == asio::error::would_block
-        || ec == asio::error::try_again)
-      return false;
-
-    // Operation is complete.
-    if (bytes >= 0)
-    {
-      ec = asio::error_code();
-      bytes_transferred = bytes;
-    }
-    else
-      bytes_transferred = 0;
-
-    return true;
-  }
-}
-
-#endif // defined(ASIO_HAS_IOCP)
-
-signed_size_type recvmsg(socket_type s, buf* bufs, size_t count,
-    int in_flags, int& out_flags, asio::error_code& ec)
-{
-  clear_last_error();
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  out_flags = 0;
-  return socket_ops::recv(s, bufs, count, in_flags, ec);
-#else // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  msghdr msg = msghdr();
-  msg.msg_iov = bufs;
-  msg.msg_iovlen = static_cast<int>(count);
-  signed_size_type result = error_wrapper(::recvmsg(s, &msg, in_flags), ec);
-  if (result >= 0)
-  {
-    ec = asio::error_code();
-    out_flags = msg.msg_flags;
-  }
-  else
-    out_flags = 0;
-  return result;
-#endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-}
-
-size_t sync_recvmsg(socket_type s, state_type state,
-    buf* bufs, size_t count, int in_flags, int& out_flags,
-    asio::error_code& ec)
-{
-  if (s == invalid_socket)
-  {
-    ec = asio::error::bad_descriptor;
-    return 0;
-  }
-
-  // Read some data.
-  for (;;)
-  {
-    // Try to complete the operation without blocking.
-    signed_size_type bytes = socket_ops::recvmsg(
-        s, bufs, count, in_flags, out_flags, ec);
-
-    // Check if operation succeeded.
-    if (bytes >= 0)
-      return bytes;
-
-    // Operation failed.
-    if ((state & user_set_non_blocking)
-        || (ec != asio::error::would_block
-          && ec != asio::error::try_again))
-      return 0;
-
-    // Wait for socket to become ready.
-    if (socket_ops::poll_read(s, 0, -1, ec) < 0)
-      return 0;
-  }
-}
-
-#if defined(ASIO_HAS_IOCP)
-
-void complete_iocp_recvmsg(
-    const weak_cancel_token_type& cancel_token,
-    asio::error_code& ec)
-{
-  // Map non-portable errors to their portable counterparts.
-  if (ec.value() == ERROR_NETNAME_DELETED)
-  {
-    if (cancel_token.expired())
-      ec = asio::error::operation_aborted;
-    else
-      ec = asio::error::connection_reset;
-  }
-  else if (ec.value() == ERROR_PORT_UNREACHABLE)
-  {
-    ec = asio::error::connection_refused;
-  }
-  else if (ec.value() == WSAEMSGSIZE || ec.value() == ERROR_MORE_DATA)
-  {
-    ec.assign(0, ec.category());
-  }
-}
-
-#else // defined(ASIO_HAS_IOCP)
-
-bool non_blocking_recvmsg(socket_type s,
-    buf* bufs, size_t count, int in_flags, int& out_flags,
-    asio::error_code& ec, size_t& bytes_transferred)
-{
-  for (;;)
-  {
-    // Read some data.
-    signed_size_type bytes = socket_ops::recvmsg(
-        s, bufs, count, in_flags, out_flags, ec);
-
-    // Retry operation if interrupted by signal.
-    if (ec == asio::error::interrupted)
-      continue;
-
-    // Check if we need to run the operation again.
-    if (ec == asio::error::would_block
-        || ec == asio::error::try_again)
-      return false;
-
-    // Operation is complete.
-    if (bytes >= 0)
-    {
-      ec = asio::error_code();
-      bytes_transferred = bytes;
-    }
-    else
-      bytes_transferred = 0;
-
-    return true;
-  }
-}
-
-#endif // defined(ASIO_HAS_IOCP)
-
-signed_size_type send(socket_type s, const buf* bufs, size_t count,
-    int flags, asio::error_code& ec)
-{
-  clear_last_error();
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  // Send the data.
-  DWORD send_buf_count = static_cast<DWORD>(count);
-  DWORD bytes_transferred = 0;
-  DWORD send_flags = flags;
-  int result = error_wrapper(::WSASend(s, const_cast<buf*>(bufs),
-        send_buf_count, &bytes_transferred, send_flags, 0, 0), ec);
-  if (ec.value() == ERROR_NETNAME_DELETED)
-    ec = asio::error::connection_reset;
-  else if (ec.value() == ERROR_PORT_UNREACHABLE)
-    ec = asio::error::connection_refused;
-  if (result != 0)
-    return socket_error_retval;
-  ec = asio::error_code();
-  return bytes_transferred;
-#else // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  msghdr msg = msghdr();
-  msg.msg_iov = const_cast<buf*>(bufs);
-  msg.msg_iovlen = static_cast<int>(count);
-#if defined(__linux__)
-  flags |= MSG_NOSIGNAL;
-#endif // defined(__linux__)
-  signed_size_type result = error_wrapper(::sendmsg(s, &msg, flags), ec);
-  if (result >= 0)
-    ec = asio::error_code();
-  return result;
-#endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-}
-
-size_t sync_send(socket_type s, state_type state, const buf* bufs,
-    size_t count, int flags, bool all_empty, asio::error_code& ec)
-{
-  if (s == invalid_socket)
-  {
-    ec = asio::error::bad_descriptor;
-    return 0;
-  }
-
-  // A request to write 0 bytes to a stream is a no-op.
-  if (all_empty && (state & stream_oriented))
-  {
-    ec = asio::error_code();
-    return 0;
-  }
-
-  // Read some data.
-  for (;;)
-  {
-    // Try to complete the operation without blocking.
-    signed_size_type bytes = socket_ops::send(s, bufs, count, flags, ec);
-
-    // Check if operation succeeded.
-    if (bytes >= 0)
-      return bytes;
-
-    // Operation failed.
-    if ((state & user_set_non_blocking)
-        || (ec != asio::error::would_block
-          && ec != asio::error::try_again))
-      return 0;
-
-    // Wait for socket to become ready.
-    if (socket_ops::poll_write(s, 0, -1, ec) < 0)
-      return 0;
-  }
-}
-
-#if defined(ASIO_HAS_IOCP)
-
-void complete_iocp_send(
-    const weak_cancel_token_type& cancel_token,
-    asio::error_code& ec)
-{
-  // Map non-portable errors to their portable counterparts.
-  if (ec.value() == ERROR_NETNAME_DELETED)
-  {
-    if (cancel_token.expired())
-      ec = asio::error::operation_aborted;
-    else
-      ec = asio::error::connection_reset;
-  }
-  else if (ec.value() == ERROR_PORT_UNREACHABLE)
-  {
-    ec = asio::error::connection_refused;
-  }
-}
-
-#else // defined(ASIO_HAS_IOCP)
-
-bool non_blocking_send(socket_type s,
-    const buf* bufs, size_t count, int flags,
-    asio::error_code& ec, size_t& bytes_transferred)
-{
-  for (;;)
-  {
-    // Write some data.
-    signed_size_type bytes = socket_ops::send(s, bufs, count, flags, ec);
-
-    // Retry operation if interrupted by signal.
-    if (ec == asio::error::interrupted)
-      continue;
-
-    // Check if we need to run the operation again.
-    if (ec == asio::error::would_block
-        || ec == asio::error::try_again)
-      return false;
-
-    // Operation is complete.
-    if (bytes >= 0)
-    {
-      ec = asio::error_code();
-      bytes_transferred = bytes;
-    }
-    else
-      bytes_transferred = 0;
-
-    return true;
-  }
-}
-
-#endif // defined(ASIO_HAS_IOCP)
-
-signed_size_type sendto(socket_type s, const buf* bufs, size_t count,
-    int flags, const socket_addr_type* addr, std::size_t addrlen,
-    asio::error_code& ec)
-{
-  clear_last_error();
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  // Send the data.
-  DWORD send_buf_count = static_cast<DWORD>(count);
-  DWORD bytes_transferred = 0;
-  int result = error_wrapper(::WSASendTo(s, const_cast<buf*>(bufs),
-        send_buf_count, &bytes_transferred, flags, addr,
-        static_cast<int>(addrlen), 0, 0), ec);
-  if (ec.value() == ERROR_NETNAME_DELETED)
-    ec = asio::error::connection_reset;
-  else if (ec.value() == ERROR_PORT_UNREACHABLE)
-    ec = asio::error::connection_refused;
-  if (result != 0)
-    return socket_error_retval;
-  ec = asio::error_code();
-  return bytes_transferred;
-#else // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  msghdr msg = msghdr();
-  init_msghdr_msg_name(msg.msg_name, addr);
-  msg.msg_namelen = static_cast<int>(addrlen);
-  msg.msg_iov = const_cast<buf*>(bufs);
-  msg.msg_iovlen = static_cast<int>(count);
-#if defined(__linux__)
-  flags |= MSG_NOSIGNAL;
-#endif // defined(__linux__)
-  signed_size_type result = error_wrapper(::sendmsg(s, &msg, flags), ec);
-  if (result >= 0)
-    ec = asio::error_code();
-  return result;
-#endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-}
-
-size_t sync_sendto(socket_type s, state_type state, const buf* bufs,
-    size_t count, int flags, const socket_addr_type* addr,
-    std::size_t addrlen, asio::error_code& ec)
-{
-  if (s == invalid_socket)
-  {
-    ec = asio::error::bad_descriptor;
-    return 0;
-  }
-
-  // Write some data.
-  for (;;)
-  {
-    // Try to complete the operation without blocking.
-    signed_size_type bytes = socket_ops::sendto(
-        s, bufs, count, flags, addr, addrlen, ec);
-
-    // Check if operation succeeded.
-    if (bytes >= 0)
-      return bytes;
-
-    // Operation failed.
-    if ((state & user_set_non_blocking)
-        || (ec != asio::error::would_block
-          && ec != asio::error::try_again))
-      return 0;
-
-    // Wait for socket to become ready.
-    if (socket_ops::poll_write(s, 0, -1, ec) < 0)
-      return 0;
-  }
-}
-
-#if !defined(ASIO_HAS_IOCP)
-
-bool non_blocking_sendto(socket_type s,
-    const buf* bufs, size_t count, int flags,
-    const socket_addr_type* addr, std::size_t addrlen,
-    asio::error_code& ec, size_t& bytes_transferred)
-{
-  for (;;)
-  {
-    // Write some data.
-    signed_size_type bytes = socket_ops::sendto(
-        s, bufs, count, flags, addr, addrlen, ec);
-
-    // Retry operation if interrupted by signal.
-    if (ec == asio::error::interrupted)
-      continue;
-
-    // Check if we need to run the operation again.
-    if (ec == asio::error::would_block
-        || ec == asio::error::try_again)
-      return false;
-
-    // Operation is complete.
-    if (bytes >= 0)
-    {
-      ec = asio::error_code();
-      bytes_transferred = bytes;
-    }
-    else
-      bytes_transferred = 0;
-
-    return true;
-  }
-}
-
-#endif // !defined(ASIO_HAS_IOCP)
-
-socket_type socket(int af, int type, int protocol,
-    asio::error_code& ec)
-{
-  clear_last_error();
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  socket_type s = error_wrapper(::WSASocketW(af, type, protocol, 0, 0,
-        WSA_FLAG_OVERLAPPED), ec);
-  if (s == invalid_socket)
-    return s;
-
-  if (af == ASIO_OS_DEF(AF_INET6))
-  {
-    // Try to enable the POSIX default behaviour of having IPV6_V6ONLY set to
-    // false. This will only succeed on Windows Vista and later versions of
-    // Windows, where a dual-stack IPv4/v6 implementation is available.
-    DWORD optval = 0;
-    ::setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY,
-        reinterpret_cast<const char*>(&optval), sizeof(optval));
-  }
-
-  ec = asio::error_code();
-
-  return s;
-#elif defined(__MACH__) && defined(__APPLE__) || defined(__FreeBSD__)
-  socket_type s = error_wrapper(::socket(af, type, protocol), ec);
-  if (s == invalid_socket)
-    return s;
-
-  int optval = 1;
-  int result = error_wrapper(::setsockopt(s,
-        SOL_SOCKET, SO_NOSIGPIPE, &optval, sizeof(optval)), ec);
-  if (result != 0)
-  {
-    ::close(s);
-    return invalid_socket;
-  }
-
-  return s;
-#else
-  int s = error_wrapper(::socket(af, type, protocol), ec);
-  if (s >= 0)
-    ec = asio::error_code();
-  return s;
-#endif
-}
-
-template <typename SockLenType>
-inline int call_setsockopt(SockLenType msghdr::*,
-    socket_type s, int level, int optname,
-    const void* optval, std::size_t optlen)
-{
-  return ::setsockopt(s, level, optname,
-      (const char*)optval, (SockLenType)optlen);
-}
-
-int setsockopt(socket_type s, state_type& state, int level, int optname,
-    const void* optval, std::size_t optlen, asio::error_code& ec)
-{
-  if (s == invalid_socket)
-  {
-    ec = asio::error::bad_descriptor;
-    return socket_error_retval;
-  }
-
-  if (level == custom_socket_option_level && optname == always_fail_option)
-  {
-    ec = asio::error::invalid_argument;
-    return socket_error_retval;
-  }
-
-  if (level == custom_socket_option_level
-      && optname == enable_connection_aborted_option)
-  {
-    if (optlen != sizeof(int))
-    {
-      ec = asio::error::invalid_argument;
-      return socket_error_retval;
-    }
-
-    if (*static_cast<const int*>(optval))
-      state |= enable_connection_aborted;
-    else
-      state &= ~enable_connection_aborted;
-    ec = asio::error_code();
-    return 0;
-  }
-
-  if (level == SOL_SOCKET && optname == SO_LINGER)
-    state |= user_set_linger;
-
-#if defined(__BORLANDC__)
-  // Mysteriously, using the getsockopt and setsockopt functions directly with
-  // Borland C++ results in incorrect values being set and read. The bug can be
-  // worked around by using function addresses resolved with GetProcAddress.
-  if (HMODULE winsock_module = ::GetModuleHandleA("ws2_32"))
-  {
-    typedef int (WSAAPI *sso_t)(SOCKET, int, int, const char*, int);
-    if (sso_t sso = (sso_t)::GetProcAddress(winsock_module, "setsockopt"))
-    {
-      clear_last_error();
-      return error_wrapper(sso(s, level, optname,
-            reinterpret_cast<const char*>(optval),
-            static_cast<int>(optlen)), ec);
-    }
-  }
-  ec = asio::error::fault;
-  return socket_error_retval;
-#else // defined(__BORLANDC__)
-  clear_last_error();
-  int result = error_wrapper(call_setsockopt(&msghdr::msg_namelen,
-        s, level, optname, optval, optlen), ec);
-  if (result == 0)
-  {
-    ec = asio::error_code();
-
-#if defined(__MACH__) && defined(__APPLE__) \
-  || defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
-    // To implement portable behaviour for SO_REUSEADDR with UDP sockets we
-    // need to also set SO_REUSEPORT on BSD-based platforms.
-    if ((state & datagram_oriented)
-        && level == SOL_SOCKET && optname == SO_REUSEADDR)
-    {
-      call_setsockopt(&msghdr::msg_namelen, s,
-          SOL_SOCKET, SO_REUSEPORT, optval, optlen);
-    }
-#endif
-  }
-
-  return result;
-#endif // defined(__BORLANDC__)
-}
-
-template <typename SockLenType>
-inline int call_getsockopt(SockLenType msghdr::*,
-    socket_type s, int level, int optname,
-    void* optval, std::size_t* optlen)
-{
-  SockLenType tmp_optlen = (SockLenType)*optlen;
-  int result = ::getsockopt(s, level, optname, (char*)optval, &tmp_optlen);
-  *optlen = (std::size_t)tmp_optlen;
-  return result;
-}
-
-int getsockopt(socket_type s, state_type state, int level, int optname,
-    void* optval, size_t* optlen, asio::error_code& ec)
-{
-  if (s == invalid_socket)
-  {
-    ec = asio::error::bad_descriptor;
-    return socket_error_retval;
-  }
-
-  if (level == custom_socket_option_level && optname == always_fail_option)
-  {
-    ec = asio::error::invalid_argument;
-    return socket_error_retval;
-  }
-
-  if (level == custom_socket_option_level
-      && optname == enable_connection_aborted_option)
-  {
-    if (*optlen != sizeof(int))
-    {
-      ec = asio::error::invalid_argument;
-      return socket_error_retval;
-    }
-
-    *static_cast<int*>(optval) = (state & enable_connection_aborted) ? 1 : 0;
-    ec = asio::error_code();
-    return 0;
-  }
-
-#if defined(__BORLANDC__)
-  // Mysteriously, using the getsockopt and setsockopt functions directly with
-  // Borland C++ results in incorrect values being set and read. The bug can be
-  // worked around by using function addresses resolved with GetProcAddress.
-  if (HMODULE winsock_module = ::GetModuleHandleA("ws2_32"))
-  {
-    typedef int (WSAAPI *gso_t)(SOCKET, int, int, char*, int*);
-    if (gso_t gso = (gso_t)::GetProcAddress(winsock_module, "getsockopt"))
-    {
-      clear_last_error();
-      int tmp_optlen = static_cast<int>(*optlen);
-      int result = error_wrapper(gso(s, level, optname,
-            reinterpret_cast<char*>(optval), &tmp_optlen), ec);
-      *optlen = static_cast<size_t>(tmp_optlen);
-      if (result != 0 && level == IPPROTO_IPV6 && optname == IPV6_V6ONLY
-          && ec.value() == WSAENOPROTOOPT && *optlen == sizeof(DWORD))
-      {
-        // Dual-stack IPv4/v6 sockets, and the IPV6_V6ONLY socket option, are
-        // only supported on Windows Vista and later. To simplify program logic
-        // we will fake success of getting this option and specify that the
-        // value is non-zero (i.e. true). This corresponds to the behavior of
-        // IPv6 sockets on Windows platforms pre-Vista.
-        *static_cast<DWORD*>(optval) = 1;
-        ec = asio::error_code();
-      }
-      return result;
-    }
-  }
-  ec = asio::error::fault;
-  return socket_error_retval;
-#elif defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  clear_last_error();
-  int result = error_wrapper(call_getsockopt(&msghdr::msg_namelen,
-        s, level, optname, optval, optlen), ec);
-  if (result != 0 && level == IPPROTO_IPV6 && optname == IPV6_V6ONLY
-      && ec.value() == WSAENOPROTOOPT && *optlen == sizeof(DWORD))
-  {
-    // Dual-stack IPv4/v6 sockets, and the IPV6_V6ONLY socket option, are only
-    // supported on Windows Vista and later. To simplify program logic we will
-    // fake success of getting this option and specify that the value is
-    // non-zero (i.e. true). This corresponds to the behavior of IPv6 sockets
-    // on Windows platforms pre-Vista.
-    *static_cast<DWORD*>(optval) = 1;
-    ec = asio::error_code();
-  }
-  if (result == 0)
-    ec = asio::error_code();
-  return result;
-#else // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  clear_last_error();
-  int result = error_wrapper(call_getsockopt(&msghdr::msg_namelen,
-        s, level, optname, optval, optlen), ec);
-#if defined(__linux__)
-  if (result == 0 && level == SOL_SOCKET && *optlen == sizeof(int)
-      && (optname == SO_SNDBUF || optname == SO_RCVBUF))
-  {
-    // On Linux, setting SO_SNDBUF or SO_RCVBUF to N actually causes the kernel
-    // to set the buffer size to N*2. Linux puts additional stuff into the
-    // buffers so that only about half is actually available to the application.
-    // The retrieved value is divided by 2 here to make it appear as though the
-    // correct value has been set.
-    *static_cast<int*>(optval) /= 2;
-  }
-#endif // defined(__linux__)
-  if (result == 0)
-    ec = asio::error_code();
-  return result;
-#endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-}
-
-template <typename SockLenType>
-inline int call_getpeername(SockLenType msghdr::*,
-    socket_type s, socket_addr_type* addr, std::size_t* addrlen)
-{
-  SockLenType tmp_addrlen = (SockLenType)*addrlen;
-  int result = ::getpeername(s, addr, &tmp_addrlen);
-  *addrlen = (std::size_t)tmp_addrlen;
-  return result;
-}
-
-int getpeername(socket_type s, socket_addr_type* addr,
-    std::size_t* addrlen, bool cached, asio::error_code& ec)
-{
-  if (s == invalid_socket)
-  {
-    ec = asio::error::bad_descriptor;
-    return socket_error_retval;
-  }
-
-#if defined(ASIO_WINDOWS) && !defined(ASIO_WINDOWS_APP) \
-  || defined(__CYGWIN__)
-  if (cached)
-  {
-    // Check if socket is still connected.
-    DWORD connect_time = 0;
-    size_t connect_time_len = sizeof(connect_time);
-    if (socket_ops::getsockopt(s, 0, SOL_SOCKET, SO_CONNECT_TIME,
-          &connect_time, &connect_time_len, ec) == socket_error_retval)
-    {
-      return socket_error_retval;
-    }
-    if (connect_time == 0xFFFFFFFF)
-    {
-      ec = asio::error::not_connected;
-      return socket_error_retval;
-    }
-
-    // The cached value is still valid.
-    ec = asio::error_code();
-    return 0;
-  }
-#else // defined(ASIO_WINDOWS) && !defined(ASIO_WINDOWS_APP)
-      // || defined(__CYGWIN__)
-  (void)cached;
-#endif // defined(ASIO_WINDOWS) && !defined(ASIO_WINDOWS_APP)
-       // || defined(__CYGWIN__)
-
-  clear_last_error();
-  int result = error_wrapper(call_getpeername(
-        &msghdr::msg_namelen, s, addr, addrlen), ec);
-  if (result == 0)
-    ec = asio::error_code();
-  return result;
-}
-
-template <typename SockLenType>
-inline int call_getsockname(SockLenType msghdr::*,
-    socket_type s, socket_addr_type* addr, std::size_t* addrlen)
-{
-  SockLenType tmp_addrlen = (SockLenType)*addrlen;
-  int result = ::getsockname(s, addr, &tmp_addrlen);
-  *addrlen = (std::size_t)tmp_addrlen;
-  return result;
-}
-
-int getsockname(socket_type s, socket_addr_type* addr,
-    std::size_t* addrlen, asio::error_code& ec)
-{
-  if (s == invalid_socket)
-  {
-    ec = asio::error::bad_descriptor;
-    return socket_error_retval;
-  }
-
-  clear_last_error();
-  int result = error_wrapper(call_getsockname(
-        &msghdr::msg_namelen, s, addr, addrlen), ec);
-  if (result == 0)
-    ec = asio::error_code();
-  return result;
-}
-
-int ioctl(socket_type s, state_type& state, int cmd,
-    ioctl_arg_type* arg, asio::error_code& ec)
-{
-  if (s == invalid_socket)
-  {
-    ec = asio::error::bad_descriptor;
-    return socket_error_retval;
-  }
-
-  clear_last_error();
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  int result = error_wrapper(::ioctlsocket(s, cmd, arg), ec);
-#elif defined(__MACH__) && defined(__APPLE__) \
-  || defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
-  int result = error_wrapper(::ioctl(s,
-        static_cast<unsigned int>(cmd), arg), ec);
-#else
-  int result = error_wrapper(::ioctl(s, cmd, arg), ec);
-#endif
-  if (result >= 0)
-  {
-    ec = asio::error_code();
-
-    // When updating the non-blocking mode we always perform the ioctl syscall,
-    // even if the flags would otherwise indicate that the socket is already in
-    // the correct state. This ensures that the underlying socket is put into
-    // the state that has been requested by the user. If the ioctl syscall was
-    // successful then we need to update the flags to match.
-    if (cmd == static_cast<int>(FIONBIO))
-    {
-      if (*arg)
-      {
-        state |= user_set_non_blocking;
-      }
-      else
-      {
-        // Clearing the non-blocking mode always overrides any internally-set
-        // non-blocking flag. Any subsequent asynchronous operations will need
-        // to re-enable non-blocking I/O.
-        state &= ~(user_set_non_blocking | internal_non_blocking);
-      }
-    }
-  }
-
-  return result;
-}
-
-int select(int nfds, fd_set* readfds, fd_set* writefds,
-    fd_set* exceptfds, timeval* timeout, asio::error_code& ec)
-{
-  clear_last_error();
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  if (!readfds && !writefds && !exceptfds && timeout)
-  {
-    DWORD milliseconds = timeout->tv_sec * 1000 + timeout->tv_usec / 1000;
-    if (milliseconds == 0)
-      milliseconds = 1; // Force context switch.
-    ::Sleep(milliseconds);
-    ec = asio::error_code();
-    return 0;
-  }
-
-  // The select() call allows timeout values measured in microseconds, but the
-  // system clock (as wrapped by boost::posix_time::microsec_clock) typically
-  // has a resolution of 10 milliseconds. This can lead to a spinning select
-  // reactor, meaning increased CPU usage, when waiting for the earliest
-  // scheduled timeout if it's less than 10 milliseconds away. To avoid a tight
-  // spin we'll use a minimum timeout of 1 millisecond.
-  if (timeout && timeout->tv_sec == 0
-      && timeout->tv_usec > 0 && timeout->tv_usec < 1000)
-    timeout->tv_usec = 1000;
-#endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-
-#if defined(__hpux) && defined(__SELECT)
-  timespec ts;
-  ts.tv_sec = timeout ? timeout->tv_sec : 0;
-  ts.tv_nsec = timeout ? timeout->tv_usec * 1000 : 0;
-  return error_wrapper(::pselect(nfds, readfds,
-        writefds, exceptfds, timeout ? &ts : 0, 0), ec);
-#else
-  int result = error_wrapper(::select(nfds, readfds,
-        writefds, exceptfds, timeout), ec);
-  if (result >= 0)
-    ec = asio::error_code();
-  return result;
-#endif
-}
-
-int poll_read(socket_type s, state_type state,
-    int msec, asio::error_code& ec)
-{
-  if (s == invalid_socket)
-  {
-    ec = asio::error::bad_descriptor;
-    return socket_error_retval;
-  }
-
-#if defined(ASIO_WINDOWS) \
-  || defined(__CYGWIN__) \
-  || defined(__SYMBIAN32__)
-  fd_set fds;
-  FD_ZERO(&fds);
-  FD_SET(s, &fds);
-  timeval timeout_obj;
-  timeval* timeout;
-  if (state & user_set_non_blocking)
-  {
-    timeout_obj.tv_sec = 0;
-    timeout_obj.tv_usec = 0;
-    timeout = &timeout_obj;
-  }
-  else if (msec >= 0)
-  {
-    timeout_obj.tv_sec = msec / 1000;
-    timeout_obj.tv_usec = (msec % 1000) * 1000;
-    timeout = &timeout_obj;
-  }
-  else
-    timeout = 0;
-  clear_last_error();
-  int result = error_wrapper(::select(s + 1, &fds, 0, 0, timeout), ec);
-#else // defined(ASIO_WINDOWS)
-      // || defined(__CYGWIN__)
-      // || defined(__SYMBIAN32__)
-  pollfd fds;
-  fds.fd = s;
-  fds.events = POLLIN;
-  fds.revents = 0;
-  int timeout = (state & user_set_non_blocking) ? 0 : msec;
-  clear_last_error();
-  int result = error_wrapper(::poll(&fds, 1, timeout), ec);
-#endif // defined(ASIO_WINDOWS)
-       // || defined(__CYGWIN__)
-       // || defined(__SYMBIAN32__)
-  if (result == 0)
-    ec = (state & user_set_non_blocking)
-      ? asio::error::would_block : asio::error_code();
-  else if (result > 0)
-    ec = asio::error_code();
-  return result;
-}
-
-int poll_write(socket_type s, state_type state,
-    int msec, asio::error_code& ec)
-{
-  if (s == invalid_socket)
-  {
-    ec = asio::error::bad_descriptor;
-    return socket_error_retval;
-  }
-
-#if defined(ASIO_WINDOWS) \
-  || defined(__CYGWIN__) \
-  || defined(__SYMBIAN32__)
-  fd_set fds;
-  FD_ZERO(&fds);
-  FD_SET(s, &fds);
-  timeval timeout_obj;
-  timeval* timeout;
-  if (state & user_set_non_blocking)
-  {
-    timeout_obj.tv_sec = 0;
-    timeout_obj.tv_usec = 0;
-    timeout = &timeout_obj;
-  }
-  else if (msec >= 0)
-  {
-    timeout_obj.tv_sec = msec / 1000;
-    timeout_obj.tv_usec = (msec % 1000) * 1000;
-    timeout = &timeout_obj;
-  }
-  else
-    timeout = 0;
-  clear_last_error();
-  int result = error_wrapper(::select(s + 1, 0, &fds, 0, timeout), ec);
-#else // defined(ASIO_WINDOWS)
-      // || defined(__CYGWIN__)
-      // || defined(__SYMBIAN32__)
-  pollfd fds;
-  fds.fd = s;
-  fds.events = POLLOUT;
-  fds.revents = 0;
-  int timeout = (state & user_set_non_blocking) ? 0 : msec;
-  clear_last_error();
-  int result = error_wrapper(::poll(&fds, 1, timeout), ec);
-#endif // defined(ASIO_WINDOWS)
-       // || defined(__CYGWIN__)
-       // || defined(__SYMBIAN32__)
-  if (result == 0)
-    ec = (state & user_set_non_blocking)
-      ? asio::error::would_block : asio::error_code();
-  else if (result > 0)
-    ec = asio::error_code();
-  return result;
-}
-
-int poll_error(socket_type s, state_type state,
-    int msec, asio::error_code& ec)
-{
-  if (s == invalid_socket)
-  {
-    ec = asio::error::bad_descriptor;
-    return socket_error_retval;
-  }
-
-#if defined(ASIO_WINDOWS) \
-  || defined(__CYGWIN__) \
-  || defined(__SYMBIAN32__)
-  fd_set fds;
-  FD_ZERO(&fds);
-  FD_SET(s, &fds);
-  timeval timeout_obj;
-  timeval* timeout;
-  if (state & user_set_non_blocking)
-  {
-    timeout_obj.tv_sec = 0;
-    timeout_obj.tv_usec = 0;
-    timeout = &timeout_obj;
-  }
-  else if (msec >= 0)
-  {
-    timeout_obj.tv_sec = msec / 1000;
-    timeout_obj.tv_usec = (msec % 1000) * 1000;
-    timeout = &timeout_obj;
-  }
-  else
-    timeout = 0;
-  clear_last_error();
-  int result = error_wrapper(::select(s + 1, 0, 0, &fds, timeout), ec);
-#else // defined(ASIO_WINDOWS)
-      // || defined(__CYGWIN__)
-      // || defined(__SYMBIAN32__)
-  pollfd fds;
-  fds.fd = s;
-  fds.events = POLLPRI | POLLERR | POLLHUP;
-  fds.revents = 0;
-  int timeout = (state & user_set_non_blocking) ? 0 : msec;
-  clear_last_error();
-  int result = error_wrapper(::poll(&fds, 1, timeout), ec);
-#endif // defined(ASIO_WINDOWS)
-       // || defined(__CYGWIN__)
-       // || defined(__SYMBIAN32__)
-  if (result == 0)
-    ec = (state & user_set_non_blocking)
-      ? asio::error::would_block : asio::error_code();
-  else if (result > 0)
-    ec = asio::error_code();
-  return result;
-}
-
-int poll_connect(socket_type s, int msec, asio::error_code& ec)
-{
-  if (s == invalid_socket)
-  {
-    ec = asio::error::bad_descriptor;
-    return socket_error_retval;
-  }
-
-#if defined(ASIO_WINDOWS) \
-  || defined(__CYGWIN__) \
-  || defined(__SYMBIAN32__)
-  fd_set write_fds;
-  FD_ZERO(&write_fds);
-  FD_SET(s, &write_fds);
-  fd_set except_fds;
-  FD_ZERO(&except_fds);
-  FD_SET(s, &except_fds);
-  timeval timeout_obj;
-  timeval* timeout;
-  if (msec >= 0)
-  {
-    timeout_obj.tv_sec = msec / 1000;
-    timeout_obj.tv_usec = (msec % 1000) * 1000;
-    timeout = &timeout_obj;
-  }
-  else
-    timeout = 0;
-  clear_last_error();
-  int result = error_wrapper(::select(
-        s + 1, 0, &write_fds, &except_fds, timeout), ec);
-  if (result >= 0)
-    ec = asio::error_code();
-  return result;
-#else // defined(ASIO_WINDOWS)
-      // || defined(__CYGWIN__)
-      // || defined(__SYMBIAN32__)
-  pollfd fds;
-  fds.fd = s;
-  fds.events = POLLOUT;
-  fds.revents = 0;
-  clear_last_error();
-  int result = error_wrapper(::poll(&fds, 1, msec), ec);
-  if (result >= 0)
-    ec = asio::error_code();
-  return result;
-#endif // defined(ASIO_WINDOWS)
-       // || defined(__CYGWIN__)
-       // || defined(__SYMBIAN32__)
-}
-
-#endif // !defined(ASIO_WINDOWS_RUNTIME)
-
-const char* inet_ntop(int af, const void* src, char* dest, size_t length,
-    unsigned long scope_id, asio::error_code& ec)
-{
-  clear_last_error();
-#if defined(ASIO_WINDOWS_RUNTIME)
-  using namespace std; // For sprintf.
-  const unsigned char* bytes = static_cast<const unsigned char*>(src);
-  if (af == ASIO_OS_DEF(AF_INET))
-  {
-    sprintf_s(dest, length, "%u.%u.%u.%u",
-        bytes[0], bytes[1], bytes[2], bytes[3]);
-    return dest;
-  }
-  else if (af == ASIO_OS_DEF(AF_INET6))
-  {
-    size_t n = 0, b = 0, z = 0;
-    while (n < length && b < 16)
-    {
-      if (bytes[b] == 0 && bytes[b + 1] == 0 && z == 0)
-      {
-        do b += 2; while (b < 16 && bytes[b] == 0 && bytes[b + 1] == 0);
-        n += sprintf_s(dest + n, length - n, ":%s", b < 16 ? "" : ":"), ++z;
-      }
-      else
-      {
-        n += sprintf_s(dest + n, length - n, "%s%x", b ? ":" : "",
-            (static_cast<u_long_type>(bytes[b]) << 8) | bytes[b + 1]);
-        b += 2;
-      }
-    }
-    if (scope_id)
-      n += sprintf_s(dest + n, length - n, "%%%lu", scope_id);
-    return dest;
-  }
-  else
-  {
-    ec = asio::error::address_family_not_supported;
-    return 0;
-  }
-#elif defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  using namespace std; // For memcpy.
-
-  if (af != ASIO_OS_DEF(AF_INET) && af != ASIO_OS_DEF(AF_INET6))
-  {
-    ec = asio::error::address_family_not_supported;
-    return 0;
-  }
-
-  union
-  {
-    socket_addr_type base;
-    sockaddr_storage_type storage;
-    sockaddr_in4_type v4;
-    sockaddr_in6_type v6;
-  } address;
-  DWORD address_length;
-  if (af == ASIO_OS_DEF(AF_INET))
-  {
-    address_length = sizeof(sockaddr_in4_type);
-    address.v4.sin_family = ASIO_OS_DEF(AF_INET);
-    address.v4.sin_port = 0;
-    memcpy(&address.v4.sin_addr, src, sizeof(in4_addr_type));
-  }
-  else // AF_INET6
-  {
-    address_length = sizeof(sockaddr_in6_type);
-    address.v6.sin6_family = ASIO_OS_DEF(AF_INET6);
-    address.v6.sin6_port = 0;
-    address.v6.sin6_flowinfo = 0;
-    address.v6.sin6_scope_id = scope_id;
-    memcpy(&address.v6.sin6_addr, src, sizeof(in6_addr_type));
-  }
-
-  DWORD string_length = static_cast<DWORD>(length);
-#if defined(BOOST_NO_ANSI_APIS) || (defined(_MSC_VER) && (_MSC_VER >= 1800))
-  LPWSTR string_buffer = (LPWSTR)_alloca(length * sizeof(WCHAR));
-  int result = error_wrapper(::WSAAddressToStringW(&address.base,
-        address_length, 0, string_buffer, &string_length), ec);
-  ::WideCharToMultiByte(CP_ACP, 0, string_buffer, -1,
-      dest, static_cast<int>(length), 0, 0);
-#else
-  int result = error_wrapper(::WSAAddressToStringA(
-        &address.base, address_length, 0, dest, &string_length), ec);
-#endif
-
-  // Windows may set error code on success.
-  if (result != socket_error_retval)
-    ec = asio::error_code();
-
-  // Windows may not set an error code on failure.
-  else if (result == socket_error_retval && !ec)
-    ec = asio::error::invalid_argument;
-
-  return result == socket_error_retval ? 0 : dest;
-#else // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  const char* result = error_wrapper(::inet_ntop(
-        af, src, dest, static_cast<int>(length)), ec);
-  if (result == 0 && !ec)
-    ec = asio::error::invalid_argument;
-  if (result != 0 && af == ASIO_OS_DEF(AF_INET6) && scope_id != 0)
-  {
-    using namespace std; // For strcat and sprintf.
-    char if_name[IF_NAMESIZE + 1] = "%";
-    const in6_addr_type* ipv6_address = static_cast<const in6_addr_type*>(src);
-    bool is_link_local = ((ipv6_address->s6_addr[0] == 0xfe)
-        && ((ipv6_address->s6_addr[1] & 0xc0) == 0x80));
-    bool is_multicast_link_local = ((ipv6_address->s6_addr[0] == 0xff)
-        && ((ipv6_address->s6_addr[1] & 0x0f) == 0x02));
-    if ((!is_link_local && !is_multicast_link_local)
-        || if_indextoname(static_cast<unsigned>(scope_id), if_name + 1) == 0)
-      sprintf(if_name + 1, "%lu", scope_id);
-    strcat(dest, if_name);
-  }
-  return result;
-#endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-}
-
-int inet_pton(int af, const char* src, void* dest,
-    unsigned long* scope_id, asio::error_code& ec)
-{
-  clear_last_error();
-#if defined(ASIO_WINDOWS_RUNTIME)
-  using namespace std; // For sscanf.
-  unsigned char* bytes = static_cast<unsigned char*>(dest);
-  if (af == ASIO_OS_DEF(AF_INET))
-  {
-    unsigned int b0, b1, b2, b3;
-    if (sscanf_s(src, "%u.%u.%u.%u", &b0, &b1, &b2, &b3) != 4)
-    {
-      ec = asio::error::invalid_argument;
-      return -1;
-    }
-    if (b0 > 255 || b1 > 255 || b2 > 255 || b3 > 255)
-    {
-      ec = asio::error::invalid_argument;
-      return -1;
-    }
-    bytes[0] = static_cast<unsigned char>(b0);
-    bytes[1] = static_cast<unsigned char>(b1);
-    bytes[2] = static_cast<unsigned char>(b2);
-    bytes[3] = static_cast<unsigned char>(b3);
-    ec = asio::error_code();
-    return 1;
-  }
-  else if (af == ASIO_OS_DEF(AF_INET6))
-  {
-    unsigned char* bytes = static_cast<unsigned char*>(dest);
-    std::memset(bytes, 0, 16);
-    unsigned char back_bytes[16] = { 0 };
-    int num_front_bytes = 0, num_back_bytes = 0;
-    const char* p = src;
-
-    enum { fword, fcolon, bword, scope, done } state = fword;
-    unsigned long current_word = 0;
-    while (state != done)
-    {
-      if (current_word > 0xFFFF)
-      {
-        ec = asio::error::invalid_argument;
-        return -1;
-      }
-
-      switch (state)
-      {
-      case fword:
-        if (*p >= '0' && *p <= '9')
-          current_word = current_word * 16 + *p++ - '0';
-        else if (*p >= 'a' && *p <= 'f')
-          current_word = current_word * 16 + *p++ - 'a' + 10;
-        else if (*p >= 'A' && *p <= 'F')
-          current_word = current_word * 16 + *p++ - 'A' + 10;
-        else
-        {
-          if (num_front_bytes == 16)
-          {
-            ec = asio::error::invalid_argument;
-            return -1;
-          }
-
-          bytes[num_front_bytes++] = (current_word >> 8) & 0xFF;
-          bytes[num_front_bytes++] = current_word & 0xFF;
-          current_word = 0;
-
-          if (*p == ':')
-            state = fcolon, ++p;
-          else if (*p == '%')
-            state = scope, ++p;
-          else if (*p == 0)
-            state = done;
-          else
-          {
-            ec = asio::error::invalid_argument;
-            return -1;
-          }
-        }
-        break;
-
-      case fcolon:
-        if (*p == ':')
-          state = bword, ++p;
-        else
-          state = fword;
-        break;
-
-      case bword:
-        if (*p >= '0' && *p <= '9')
-          current_word = current_word * 16 + *p++ - '0';
-        else if (*p >= 'a' && *p <= 'f')
-          current_word = current_word * 16 + *p++ - 'a' + 10;
-        else if (*p >= 'A' && *p <= 'F')
-          current_word = current_word * 16 + *p++ - 'A' + 10;
-        else
-        {
-          if (num_front_bytes + num_back_bytes == 16)
-          {
-            ec = asio::error::invalid_argument;
-            return -1;
-          }
-
-          back_bytes[num_back_bytes++] = (current_word >> 8) & 0xFF;
-          back_bytes[num_back_bytes++] = current_word & 0xFF;
-          current_word = 0;
-
-          if (*p == ':')
-            state = bword, ++p;
-          else if (*p == '%')
-            state = scope, ++p;
-          else if (*p == 0)
-            state = done;
-          else
-          {
-            ec = asio::error::invalid_argument;
-            return -1;
-          }
-        }
-        break;
-
-      case scope:
-        if (*p >= '0' && *p <= '9')
-          current_word = current_word * 10 + *p++ - '0';
-        else if (*p == 0)
-          *scope_id = current_word, state = done;
-        else
-        {
-          ec = asio::error::invalid_argument;
-          return -1;
-        }
-        break;
-
-      default:
-        break;
-      }
-    }
-
-    for (int i = 0; i < num_back_bytes; ++i)
-      bytes[16 - num_back_bytes + i] = back_bytes[i];
-
-    ec = asio::error_code();
-    return 1;
-  }
-  else
-  {
-    ec = asio::error::address_family_not_supported;
-    return -1;
-  }
-#elif defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  using namespace std; // For memcpy and strcmp.
-
-  if (af != ASIO_OS_DEF(AF_INET) && af != ASIO_OS_DEF(AF_INET6))
-  {
-    ec = asio::error::address_family_not_supported;
-    return -1;
-  }
-
-  union
-  {
-    socket_addr_type base;
-    sockaddr_storage_type storage;
-    sockaddr_in4_type v4;
-    sockaddr_in6_type v6;
-  } address;
-  int address_length = sizeof(sockaddr_storage_type);
-#if defined(BOOST_NO_ANSI_APIS) || (defined(_MSC_VER) && (_MSC_VER >= 1800))
-  int num_wide_chars = static_cast<int>(strlen(src)) + 1;
-  LPWSTR wide_buffer = (LPWSTR)_alloca(num_wide_chars * sizeof(WCHAR));
-  ::MultiByteToWideChar(CP_ACP, 0, src, -1, wide_buffer, num_wide_chars);
-  int result = error_wrapper(::WSAStringToAddressW(
-        wide_buffer, af, 0, &address.base, &address_length), ec);
-#else
-  int result = error_wrapper(::WSAStringToAddressA(
-        const_cast<char*>(src), af, 0, &address.base, &address_length), ec);
-#endif
-
-  if (af == ASIO_OS_DEF(AF_INET))
-  {
-    if (result != socket_error_retval)
-    {
-      memcpy(dest, &address.v4.sin_addr, sizeof(in4_addr_type));
-      ec = asio::error_code();
-    }
-    else if (strcmp(src, "255.255.255.255") == 0)
-    {
-      static_cast<in4_addr_type*>(dest)->s_addr = INADDR_NONE;
-      ec = asio::error_code();
-    }
-  }
-  else // AF_INET6
-  {
-    if (result != socket_error_retval)
-    {
-      memcpy(dest, &address.v6.sin6_addr, sizeof(in6_addr_type));
-      if (scope_id)
-        *scope_id = address.v6.sin6_scope_id;
-      ec = asio::error_code();
-    }
-  }
-
-  // Windows may not set an error code on failure.
-  if (result == socket_error_retval && !ec)
-    ec = asio::error::invalid_argument;
-
-  if (result != socket_error_retval)
-    ec = asio::error_code();
-
-  return result == socket_error_retval ? -1 : 1;
-#else // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  using namespace std; // For strchr, memcpy and atoi.
-
-  // On some platforms, inet_pton fails if an address string contains a scope
-  // id. Detect and remove the scope id before passing the string to inet_pton.
-  const bool is_v6 = (af == ASIO_OS_DEF(AF_INET6));
-  const char* if_name = is_v6 ? strchr(src, '%') : 0;
-  char src_buf[max_addr_v6_str_len + 1];
-  const char* src_ptr = src;
-  if (if_name != 0)
-  {
-    if (if_name - src > max_addr_v6_str_len)
-    {
-      ec = asio::error::invalid_argument;
-      return 0;
-    }
-    memcpy(src_buf, src, if_name - src);
-    src_buf[if_name - src] = 0;
-    src_ptr = src_buf;
-  }
-
-  int result = error_wrapper(::inet_pton(af, src_ptr, dest), ec);
-  if (result <= 0 && !ec)
-    ec = asio::error::invalid_argument;
-  if (result > 0 && is_v6 && scope_id)
-  {
-    using namespace std; // For strchr and atoi.
-    *scope_id = 0;
-    if (if_name != 0)
-    {
-      in6_addr_type* ipv6_address = static_cast<in6_addr_type*>(dest);
-      bool is_link_local = ((ipv6_address->s6_addr[0] == 0xfe)
-          && ((ipv6_address->s6_addr[1] & 0xc0) == 0x80));
-      bool is_multicast_link_local = ((ipv6_address->s6_addr[0] == 0xff)
-          && ((ipv6_address->s6_addr[1] & 0x0f) == 0x02));
-      if (is_link_local || is_multicast_link_local)
-        *scope_id = if_nametoindex(if_name + 1);
-      if (*scope_id == 0)
-        *scope_id = atoi(if_name + 1);
-    }
-  }
-  return result;
-#endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-}
-
-int gethostname(char* name, int namelen, asio::error_code& ec)
-{
-  clear_last_error();
-#if defined(ASIO_WINDOWS_RUNTIME)
-  try
-  {
-    using namespace Windows::Foundation::Collections;
-    using namespace Windows::Networking;
-    using namespace Windows::Networking::Connectivity;
-    IVectorView<HostName^>^ hostnames = NetworkInformation::GetHostNames();
-    for (unsigned i = 0; i < hostnames->Size; ++i)
-    {
-      HostName^ hostname = hostnames->GetAt(i);
-      if (hostname->Type == HostNameType::DomainName)
-      {
-        std::wstring_convert<std::codecvt_utf8<wchar_t>> converter;
-        std::string raw_name = converter.to_bytes(hostname->RawName->Data());
-        if (namelen > 0 && raw_name.size() < static_cast<std::size_t>(namelen))
-        {
-          strcpy_s(name, namelen, raw_name.c_str());
-          return 0;
-        }
-      }
-    }
-    return -1;
-  }
-  catch (Platform::Exception^ e)
-  {
-    ec = asio::error_code(e->HResult,
-        asio::system_category());
-    return -1;
-  }
-#else // defined(ASIO_WINDOWS_RUNTIME)
-  int result = error_wrapper(::gethostname(name, namelen), ec);
-# if defined(ASIO_WINDOWS)
-  if (result == 0)
-    ec = asio::error_code();
-# endif // defined(ASIO_WINDOWS)
-  return result;
-#endif // defined(ASIO_WINDOWS_RUNTIME)
-}
-
-#if !defined(ASIO_WINDOWS_RUNTIME)
-
-#if !defined(ASIO_HAS_GETADDRINFO)
-
-// The following functions are only needed for emulation of getaddrinfo and
-// getnameinfo.
-
-inline asio::error_code translate_netdb_error(int error)
-{
-  switch (error)
-  {
-  case 0:
-    return asio::error_code();
-  case HOST_NOT_FOUND:
-    return asio::error::host_not_found;
-  case TRY_AGAIN:
-    return asio::error::host_not_found_try_again;
-  case NO_RECOVERY:
-    return asio::error::no_recovery;
-  case NO_DATA:
-    return asio::error::no_data;
-  default:
-    ASIO_ASSERT(false);
-    return asio::error::invalid_argument;
-  }
-}
-
-inline hostent* gethostbyaddr(const char* addr, int length, int af,
-    hostent* result, char* buffer, int buflength, asio::error_code& ec)
-{
-  clear_last_error();
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  (void)(buffer);
-  (void)(buflength);
-  hostent* retval = error_wrapper(::gethostbyaddr(addr, length, af), ec);
-  if (!retval)
-    return 0;
-  ec = asio::error_code();
-  *result = *retval;
-  return retval;
-#elif defined(__sun) || defined(__QNX__)
-  int error = 0;
-  hostent* retval = error_wrapper(::gethostbyaddr_r(addr, length, af, result,
-        buffer, buflength, &error), ec);
-  if (error)
-    ec = translate_netdb_error(error);
-  return retval;
-#elif defined(__MACH__) && defined(__APPLE__)
-  (void)(buffer);
-  (void)(buflength);
-  int error = 0;
-  hostent* retval = error_wrapper(::getipnodebyaddr(
-        addr, length, af, &error), ec);
-  if (error)
-    ec = translate_netdb_error(error);
-  if (!retval)
-    return 0;
-  *result = *retval;
-  return retval;
-#else
-  hostent* retval = 0;
-  int error = 0;
-  error_wrapper(::gethostbyaddr_r(addr, length, af, result, buffer,
-        buflength, &retval, &error), ec);
-  if (error)
-    ec = translate_netdb_error(error);
-  return retval;
-#endif
-}
-
-inline hostent* gethostbyname(const char* name, int af, struct hostent* result,
-    char* buffer, int buflength, int ai_flags, asio::error_code& ec)
-{
-  clear_last_error();
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  (void)(buffer);
-  (void)(buflength);
-  (void)(ai_flags);
-  if (af != ASIO_OS_DEF(AF_INET))
-  {
-    ec = asio::error::address_family_not_supported;
-    return 0;
-  }
-  hostent* retval = error_wrapper(::gethostbyname(name), ec);
-  if (!retval)
-    return 0;
-  ec = asio::error_code();
-  *result = *retval;
-  return result;
-#elif defined(__sun) || defined(__QNX__)
-  (void)(ai_flags);
-  if (af != ASIO_OS_DEF(AF_INET))
-  {
-    ec = asio::error::address_family_not_supported;
-    return 0;
-  }
-  int error = 0;
-  hostent* retval = error_wrapper(::gethostbyname_r(name, result, buffer,
-        buflength, &error), ec);
-  if (error)
-    ec = translate_netdb_error(error);
-  return retval;
-#elif defined(__MACH__) && defined(__APPLE__)
-  (void)(buffer);
-  (void)(buflength);
-  int error = 0;
-  hostent* retval = error_wrapper(::getipnodebyname(
-        name, af, ai_flags, &error), ec);
-  if (error)
-    ec = translate_netdb_error(error);
-  if (!retval)
-    return 0;
-  *result = *retval;
-  return retval;
-#else
-  (void)(ai_flags);
-  if (af != ASIO_OS_DEF(AF_INET))
-  {
-    ec = asio::error::address_family_not_supported;
-    return 0;
-  }
-  hostent* retval = 0;
-  int error = 0;
-  error_wrapper(::gethostbyname_r(name, result,
-        buffer, buflength, &retval, &error), ec);
-  if (error)
-    ec = translate_netdb_error(error);
-  return retval;
-#endif
-}
-
-inline void freehostent(hostent* h)
-{
-#if defined(__MACH__) && defined(__APPLE__)
-  if (h)
-    ::freehostent(h);
-#else
-  (void)(h);
-#endif
-}
-
-// Emulation of getaddrinfo based on implementation in:
-// Stevens, W. R., UNIX Network Programming Vol. 1, 2nd Ed., Prentice-Hall 1998.
-
-struct gai_search
-{
-  const char* host;
-  int family;
-};
-
-inline int gai_nsearch(const char* host,
-    const addrinfo_type* hints, gai_search (&search)[2])
-{
-  int search_count = 0;
-  if (host == 0 || host[0] == '\0')
-  {
-    if (hints->ai_flags & AI_PASSIVE)
-    {
-      // No host and AI_PASSIVE implies wildcard bind.
-      switch (hints->ai_family)
-      {
-      case ASIO_OS_DEF(AF_INET):
-        search[search_count].host = "0.0.0.0";
-        search[search_count].family = ASIO_OS_DEF(AF_INET);
-        ++search_count;
-        break;
-      case ASIO_OS_DEF(AF_INET6):
-        search[search_count].host = "0::0";
-        search[search_count].family = ASIO_OS_DEF(AF_INET6);
-        ++search_count;
-        break;
-      case ASIO_OS_DEF(AF_UNSPEC):
-        search[search_count].host = "0::0";
-        search[search_count].family = ASIO_OS_DEF(AF_INET6);
-        ++search_count;
-        search[search_count].host = "0.0.0.0";
-        search[search_count].family = ASIO_OS_DEF(AF_INET);
-        ++search_count;
-        break;
-      default:
-        break;
-      }
-    }
-    else
-    {
-      // No host and not AI_PASSIVE means connect to local host.
-      switch (hints->ai_family)
-      {
-      case ASIO_OS_DEF(AF_INET):
-        search[search_count].host = "localhost";
-        search[search_count].family = ASIO_OS_DEF(AF_INET);
-        ++search_count;
-        break;
-      case ASIO_OS_DEF(AF_INET6):
-        search[search_count].host = "localhost";
-        search[search_count].family = ASIO_OS_DEF(AF_INET6);
-        ++search_count;
-        break;
-      case ASIO_OS_DEF(AF_UNSPEC):
-        search[search_count].host = "localhost";
-        search[search_count].family = ASIO_OS_DEF(AF_INET6);
-        ++search_count;
-        search[search_count].host = "localhost";
-        search[search_count].family = ASIO_OS_DEF(AF_INET);
-        ++search_count;
-        break;
-      default:
-        break;
-      }
-    }
-  }
-  else
-  {
-    // Host is specified.
-    switch (hints->ai_family)
-    {
-    case ASIO_OS_DEF(AF_INET):
-      search[search_count].host = host;
-      search[search_count].family = ASIO_OS_DEF(AF_INET);
-      ++search_count;
-      break;
-    case ASIO_OS_DEF(AF_INET6):
-      search[search_count].host = host;
-      search[search_count].family = ASIO_OS_DEF(AF_INET6);
-      ++search_count;
-      break;
-    case ASIO_OS_DEF(AF_UNSPEC):
-      search[search_count].host = host;
-      search[search_count].family = ASIO_OS_DEF(AF_INET6);
-      ++search_count;
-      search[search_count].host = host;
-      search[search_count].family = ASIO_OS_DEF(AF_INET);
-      ++search_count;
-      break;
-    default:
-      break;
-    }
-  }
-  return search_count;
-}
-
-template <typename T>
-inline T* gai_alloc(std::size_t size = sizeof(T))
-{
-  using namespace std;
-  T* p = static_cast<T*>(::operator new(size, std::nothrow));
-  if (p)
-    memset(p, 0, size);
-  return p;
-}
-
-inline void gai_free(void* p)
-{
-  ::operator delete(p);
-}
-
-inline void gai_strcpy(char* target, const char* source, std::size_t max_size)
-{
-  using namespace std;
-#if defined(ASIO_HAS_SECURE_RTL)
-  strcpy_s(target, max_size, source);
-#else // defined(ASIO_HAS_SECURE_RTL)
-  *target = 0;
-  if (max_size > 0)
-    strncat(target, source, max_size - 1);
-#endif // defined(ASIO_HAS_SECURE_RTL)
-}
-
-enum { gai_clone_flag = 1 << 30 };
-
-inline int gai_aistruct(addrinfo_type*** next, const addrinfo_type* hints,
-    const void* addr, int family)
-{
-  using namespace std;
-
-  addrinfo_type* ai = gai_alloc<addrinfo_type>();
-  if (ai == 0)
-    return EAI_MEMORY;
-
-  ai->ai_next = 0;
-  **next = ai;
-  *next = &ai->ai_next;
-
-  ai->ai_canonname = 0;
-  ai->ai_socktype = hints->ai_socktype;
-  if (ai->ai_socktype == 0)
-    ai->ai_flags |= gai_clone_flag;
-  ai->ai_protocol = hints->ai_protocol;
-  ai->ai_family = family;
-
-  switch (ai->ai_family)
-  {
-  case ASIO_OS_DEF(AF_INET):
-    {
-      sockaddr_in4_type* sinptr = gai_alloc<sockaddr_in4_type>();
-      if (sinptr == 0)
-        return EAI_MEMORY;
-      sinptr->sin_family = ASIO_OS_DEF(AF_INET);
-      memcpy(&sinptr->sin_addr, addr, sizeof(in4_addr_type));
-      ai->ai_addr = reinterpret_cast<sockaddr*>(sinptr);
-      ai->ai_addrlen = sizeof(sockaddr_in4_type);
-      break;
-    }
-  case ASIO_OS_DEF(AF_INET6):
-    {
-      sockaddr_in6_type* sin6ptr = gai_alloc<sockaddr_in6_type>();
-      if (sin6ptr == 0)
-        return EAI_MEMORY;
-      sin6ptr->sin6_family = ASIO_OS_DEF(AF_INET6);
-      memcpy(&sin6ptr->sin6_addr, addr, sizeof(in6_addr_type));
-      ai->ai_addr = reinterpret_cast<sockaddr*>(sin6ptr);
-      ai->ai_addrlen = sizeof(sockaddr_in6_type);
-      break;
-    }
-  default:
-    break;
-  }
-
-  return 0;
-}
-
-inline addrinfo_type* gai_clone(addrinfo_type* ai)
-{
-  using namespace std;
-
-  addrinfo_type* new_ai = gai_alloc<addrinfo_type>();
-  if (new_ai == 0)
-    return new_ai;
-
-  new_ai->ai_next = ai->ai_next;
-  ai->ai_next = new_ai;
-
-  new_ai->ai_flags = 0;
-  new_ai->ai_family = ai->ai_family;
-  new_ai->ai_socktype = ai->ai_socktype;
-  new_ai->ai_protocol = ai->ai_protocol;
-  new_ai->ai_canonname = 0;
-  new_ai->ai_addrlen = ai->ai_addrlen;
-  new_ai->ai_addr = gai_alloc<sockaddr>(ai->ai_addrlen);
-  memcpy(new_ai->ai_addr, ai->ai_addr, ai->ai_addrlen);
-
-  return new_ai;
-}
-
-inline int gai_port(addrinfo_type* aihead, int port, int socktype)
-{
-  int num_found = 0;
-
-  for (addrinfo_type* ai = aihead; ai; ai = ai->ai_next)
-  {
-    if (ai->ai_flags & gai_clone_flag)
-    {
-      if (ai->ai_socktype != 0)
-      {
-        ai = gai_clone(ai);
-        if (ai == 0)
-          return -1;
-        // ai now points to newly cloned entry.
-      }
-    }
-    else if (ai->ai_socktype != socktype)
-    {
-      // Ignore if mismatch on socket type.
-      continue;
-    }
-
-    ai->ai_socktype = socktype;
-
-    switch (ai->ai_family)
-    {
-    case ASIO_OS_DEF(AF_INET):
-      {
-        sockaddr_in4_type* sinptr =
-          reinterpret_cast<sockaddr_in4_type*>(ai->ai_addr);
-        sinptr->sin_port = port;
-        ++num_found;
-        break;
-      }
-    case ASIO_OS_DEF(AF_INET6):
-      {
-        sockaddr_in6_type* sin6ptr =
-          reinterpret_cast<sockaddr_in6_type*>(ai->ai_addr);
-        sin6ptr->sin6_port = port;
-        ++num_found;
-        break;
-      }
-    default:
-      break;
-    }
-  }
-
-  return num_found;
-}
-
-inline int gai_serv(addrinfo_type* aihead,
-    const addrinfo_type* hints, const char* serv)
-{
-  using namespace std;
-
-  int num_found = 0;
-
-  if (
-#if defined(AI_NUMERICSERV)
-      (hints->ai_flags & AI_NUMERICSERV) ||
-#endif
-      isdigit(static_cast<unsigned char>(serv[0])))
-  {
-    int port = htons(atoi(serv));
-    if (hints->ai_socktype)
-    {
-      // Caller specifies socket type.
-      int rc = gai_port(aihead, port, hints->ai_socktype);
-      if (rc < 0)
-        return EAI_MEMORY;
-      num_found += rc;
-    }
-    else
-    {
-      // Caller does not specify socket type.
-      int rc = gai_port(aihead, port, SOCK_STREAM);
-      if (rc < 0)
-        return EAI_MEMORY;
-      num_found += rc;
-      rc = gai_port(aihead, port, SOCK_DGRAM);
-      if (rc < 0)
-        return EAI_MEMORY;
-      num_found += rc;
-    }
-  }
-  else
-  {
-    // Try service name with TCP first, then UDP.
-    if (hints->ai_socktype == 0 || hints->ai_socktype == SOCK_STREAM)
-    {
-      servent* sptr = getservbyname(serv, "tcp");
-      if (sptr != 0)
-      {
-        int rc = gai_port(aihead, sptr->s_port, SOCK_STREAM);
-        if (rc < 0)
-          return EAI_MEMORY;
-        num_found += rc;
-      }
-    }
-    if (hints->ai_socktype == 0 || hints->ai_socktype == SOCK_DGRAM)
-    {
-      servent* sptr = getservbyname(serv, "udp");
-      if (sptr != 0)
-      {
-        int rc = gai_port(aihead, sptr->s_port, SOCK_DGRAM);
-        if (rc < 0)
-          return EAI_MEMORY;
-        num_found += rc;
-      }
-    }
-  }
-
-  if (num_found == 0)
-  {
-    if (hints->ai_socktype == 0)
-    {
-      // All calls to getservbyname() failed.
-      return EAI_NONAME;
-    }
-    else
-    {
-      // Service not supported for socket type.
-      return EAI_SERVICE;
-    }
-  }
-
-  return 0;
-}
-
-inline int gai_echeck(const char* host, const char* service,
-    int flags, int family, int socktype, int protocol)
-{
-  (void)(flags);
-  (void)(protocol);
-
-  // Host or service must be specified.
-  if (host == 0 || host[0] == '\0')
-    if (service == 0 || service[0] == '\0')
-      return EAI_NONAME;
-
-  // Check combination of family and socket type.
-  switch (family)
-  {
-  case ASIO_OS_DEF(AF_UNSPEC):
-    break;
-  case ASIO_OS_DEF(AF_INET):
-  case ASIO_OS_DEF(AF_INET6):
-    if (service != 0 && service[0] != '\0')
-      if (socktype != 0 && socktype != SOCK_STREAM && socktype != SOCK_DGRAM)
-        return EAI_SOCKTYPE;
-    break;
-  default:
-    return EAI_FAMILY;
-  }
-
-  return 0;
-}
-
-inline void freeaddrinfo_emulation(addrinfo_type* aihead)
-{
-  addrinfo_type* ai = aihead;
-  while (ai)
-  {
-    gai_free(ai->ai_addr);
-    gai_free(ai->ai_canonname);
-    addrinfo_type* ainext = ai->ai_next;
-    gai_free(ai);
-    ai = ainext;
-  }
-}
-
-inline int getaddrinfo_emulation(const char* host, const char* service,
-    const addrinfo_type* hintsp, addrinfo_type** result)
-{
-  // Set up linked list of addrinfo structures.
-  addrinfo_type* aihead = 0;
-  addrinfo_type** ainext = &aihead;
-  char* canon = 0;
-
-  // Supply default hints if not specified by caller.
-  addrinfo_type hints = addrinfo_type();
-  hints.ai_family = ASIO_OS_DEF(AF_UNSPEC);
-  if (hintsp)
-    hints = *hintsp;
-
-  // If the resolution is not specifically for AF_INET6, remove the AI_V4MAPPED
-  // and AI_ALL flags.
-#if defined(AI_V4MAPPED)
-  if (hints.ai_family != ASIO_OS_DEF(AF_INET6))
-    hints.ai_flags &= ~AI_V4MAPPED;
-#endif
-#if defined(AI_ALL)
-  if (hints.ai_family != ASIO_OS_DEF(AF_INET6))
-    hints.ai_flags &= ~AI_ALL;
-#endif
-
-  // Basic error checking.
-  int rc = gai_echeck(host, service, hints.ai_flags, hints.ai_family,
-      hints.ai_socktype, hints.ai_protocol);
-  if (rc != 0)
-  {
-    freeaddrinfo_emulation(aihead);
-    return rc;
-  }
-
-  gai_search search[2];
-  int search_count = gai_nsearch(host, &hints, search);
-  for (gai_search* sptr = search; sptr < search + search_count; ++sptr)
-  {
-    // Check for IPv4 dotted decimal string.
-    in4_addr_type inaddr;
-    asio::error_code ec;
-    if (socket_ops::inet_pton(ASIO_OS_DEF(AF_INET),
-          sptr->host, &inaddr, 0, ec) == 1)
-    {
-      if (hints.ai_family != ASIO_OS_DEF(AF_UNSPEC)
-          && hints.ai_family != ASIO_OS_DEF(AF_INET))
-      {
-        freeaddrinfo_emulation(aihead);
-        gai_free(canon);
-        return EAI_FAMILY;
-      }
-      if (sptr->family == ASIO_OS_DEF(AF_INET))
-      {
-        rc = gai_aistruct(&ainext, &hints, &inaddr, ASIO_OS_DEF(AF_INET));
-        if (rc != 0)
-        {
-          freeaddrinfo_emulation(aihead);
-          gai_free(canon);
-          return rc;
-        }
-      }
-      continue;
-    }
-
-    // Check for IPv6 hex string.
-    in6_addr_type in6addr;
-    if (socket_ops::inet_pton(ASIO_OS_DEF(AF_INET6),
-          sptr->host, &in6addr, 0, ec) == 1)
-    {
-      if (hints.ai_family != ASIO_OS_DEF(AF_UNSPEC)
-          && hints.ai_family != ASIO_OS_DEF(AF_INET6))
-      {
-        freeaddrinfo_emulation(aihead);
-        gai_free(canon);
-        return EAI_FAMILY;
-      }
-      if (sptr->family == ASIO_OS_DEF(AF_INET6))
-      {
-        rc = gai_aistruct(&ainext, &hints, &in6addr,
-            ASIO_OS_DEF(AF_INET6));
-        if (rc != 0)
-        {
-          freeaddrinfo_emulation(aihead);
-          gai_free(canon);
-          return rc;
-        }
-      }
-      continue;
-    }
-
-    // Look up hostname.
-    hostent hent;
-    char hbuf[8192] = "";
-    hostent* hptr = socket_ops::gethostbyname(sptr->host,
-        sptr->family, &hent, hbuf, sizeof(hbuf), hints.ai_flags, ec);
-    if (hptr == 0)
-    {
-      if (search_count == 2)
-      {
-        // Failure is OK if there are multiple searches.
-        continue;
-      }
-      freeaddrinfo_emulation(aihead);
-      gai_free(canon);
-      if (ec == asio::error::host_not_found)
-        return EAI_NONAME;
-      if (ec == asio::error::host_not_found_try_again)
-        return EAI_AGAIN;
-      if (ec == asio::error::no_recovery)
-        return EAI_FAIL;
-      if (ec == asio::error::no_data)
-        return EAI_NONAME;
-      return EAI_NONAME;
-    }
-
-    // Check for address family mismatch if one was specified.
-    if (hints.ai_family != ASIO_OS_DEF(AF_UNSPEC)
-        && hints.ai_family != hptr->h_addrtype)
-    {
-      freeaddrinfo_emulation(aihead);
-      gai_free(canon);
-      socket_ops::freehostent(hptr);
-      return EAI_FAMILY;
-    }
-
-    // Save canonical name first time.
-    if (host != 0 && host[0] != '\0' && hptr->h_name && hptr->h_name[0]
-        && (hints.ai_flags & AI_CANONNAME) && canon == 0)
-    {
-      std::size_t canon_len = strlen(hptr->h_name) + 1;
-      canon = gai_alloc<char>(canon_len);
-      if (canon == 0)
-      {
-        freeaddrinfo_emulation(aihead);
-        socket_ops::freehostent(hptr);
-        return EAI_MEMORY;
-      }
-      gai_strcpy(canon, hptr->h_name, canon_len);
-    }
-
-    // Create an addrinfo structure for each returned address.
-    for (char** ap = hptr->h_addr_list; *ap; ++ap)
-    {
-      rc = gai_aistruct(&ainext, &hints, *ap, hptr->h_addrtype);
-      if (rc != 0)
-      {
-        freeaddrinfo_emulation(aihead);
-        gai_free(canon);
-        socket_ops::freehostent(hptr);
-        return EAI_FAMILY;
-      }
-    }
-
-    socket_ops::freehostent(hptr);
-  }
-
-  // Check if we found anything.
-  if (aihead == 0)
-  {
-    gai_free(canon);
-    return EAI_NONAME;
-  }
-
-  // Return canonical name in first entry.
-  if (host != 0 && host[0] != '\0' && (hints.ai_flags & AI_CANONNAME))
-  {
-    if (canon)
-    {
-      aihead->ai_canonname = canon;
-      canon = 0;
-    }
-    else
-    {
-      std::size_t canonname_len = strlen(search[0].host) + 1;
-      aihead->ai_canonname = gai_alloc<char>(canonname_len);
-      if (aihead->ai_canonname == 0)
-      {
-        freeaddrinfo_emulation(aihead);
-        return EAI_MEMORY;
-      }
-      gai_strcpy(aihead->ai_canonname, search[0].host, canonname_len);
-    }
-  }
-  gai_free(canon);
-
-  // Process the service name.
-  if (service != 0 && service[0] != '\0')
-  {
-    rc = gai_serv(aihead, &hints, service);
-    if (rc != 0)
-    {
-      freeaddrinfo_emulation(aihead);
-      return rc;
-    }
-  }
-
-  // Return result to caller.
-  *result = aihead;
-  return 0;
-}
-
-inline asio::error_code getnameinfo_emulation(
-    const socket_addr_type* sa, std::size_t salen, char* host,
-    std::size_t hostlen, char* serv, std::size_t servlen, int flags,
-    asio::error_code& ec)
-{
-  using namespace std;
-
-  const char* addr;
-  size_t addr_len;
-  unsigned short port;
-  switch (sa->sa_family)
-  {
-  case ASIO_OS_DEF(AF_INET):
-    if (salen != sizeof(sockaddr_in4_type))
-    {
-      return ec = asio::error::invalid_argument;
-    }
-    addr = reinterpret_cast<const char*>(
-        &reinterpret_cast<const sockaddr_in4_type*>(sa)->sin_addr);
-    addr_len = sizeof(in4_addr_type);
-    port = reinterpret_cast<const sockaddr_in4_type*>(sa)->sin_port;
-    break;
-  case ASIO_OS_DEF(AF_INET6):
-    if (salen != sizeof(sockaddr_in6_type))
-    {
-      return ec = asio::error::invalid_argument;
-    }
-    addr = reinterpret_cast<const char*>(
-        &reinterpret_cast<const sockaddr_in6_type*>(sa)->sin6_addr);
-    addr_len = sizeof(in6_addr_type);
-    port = reinterpret_cast<const sockaddr_in6_type*>(sa)->sin6_port;
-    break;
-  default:
-    return ec = asio::error::address_family_not_supported;
-  }
-
-  if (host && hostlen > 0)
-  {
-    if (flags & NI_NUMERICHOST)
-    {
-      if (socket_ops::inet_ntop(sa->sa_family, addr, host, hostlen, 0, ec) == 0)
-      {
-        return ec;
-      }
-    }
-    else
-    {
-      hostent hent;
-      char hbuf[8192] = "";
-      hostent* hptr = socket_ops::gethostbyaddr(addr,
-          static_cast<int>(addr_len), sa->sa_family,
-          &hent, hbuf, sizeof(hbuf), ec);
-      if (hptr && hptr->h_name && hptr->h_name[0] != '\0')
-      {
-        if (flags & NI_NOFQDN)
-        {
-          char* dot = strchr(hptr->h_name, '.');
-          if (dot)
-          {
-            *dot = 0;
-          }
-        }
-        gai_strcpy(host, hptr->h_name, hostlen);
-        socket_ops::freehostent(hptr);
-      }
-      else
-      {
-        socket_ops::freehostent(hptr);
-        if (flags & NI_NAMEREQD)
-        {
-          return ec = asio::error::host_not_found;
-        }
-        if (socket_ops::inet_ntop(sa->sa_family,
-              addr, host, hostlen, 0, ec) == 0)
-        {
-          return ec;
-        }
-      }
-    }
-  }
-
-  if (serv && servlen > 0)
-  {
-    if (flags & NI_NUMERICSERV)
-    {
-      if (servlen < 6)
-      {
-        return ec = asio::error::no_buffer_space;
-      }
-#if defined(ASIO_HAS_SECURE_RTL)
-      sprintf_s(serv, servlen, "%u", ntohs(port));
-#else // defined(ASIO_HAS_SECURE_RTL)
-      sprintf(serv, "%u", ntohs(port));
-#endif // defined(ASIO_HAS_SECURE_RTL)
-    }
-    else
-    {
-#if defined(ASIO_HAS_PTHREADS)
-      static ::pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
-      ::pthread_mutex_lock(&mutex);
-#endif // defined(ASIO_HAS_PTHREADS)
-      servent* sptr = ::getservbyport(port, (flags & NI_DGRAM) ? "udp" : 0);
-      if (sptr && sptr->s_name && sptr->s_name[0] != '\0')
-      {
-        gai_strcpy(serv, sptr->s_name, servlen);
-      }
-      else
-      {
-        if (servlen < 6)
-        {
-          return ec = asio::error::no_buffer_space;
-        }
-#if defined(ASIO_HAS_SECURE_RTL)
-        sprintf_s(serv, servlen, "%u", ntohs(port));
-#else // defined(ASIO_HAS_SECURE_RTL)
-        sprintf(serv, "%u", ntohs(port));
-#endif // defined(ASIO_HAS_SECURE_RTL)
-      }
-#if defined(ASIO_HAS_PTHREADS)
-      ::pthread_mutex_unlock(&mutex);
-#endif // defined(ASIO_HAS_PTHREADS)
-    }
-  }
-
-  ec = asio::error_code();
-  return ec;
-}
-
-#endif // !defined(ASIO_HAS_GETADDRINFO)
-
-inline asio::error_code translate_addrinfo_error(int error)
-{
-  switch (error)
-  {
-  case 0:
-    return asio::error_code();
-  case EAI_AGAIN:
-    return asio::error::host_not_found_try_again;
-  case EAI_BADFLAGS:
-    return asio::error::invalid_argument;
-  case EAI_FAIL:
-    return asio::error::no_recovery;
-  case EAI_FAMILY:
-    return asio::error::address_family_not_supported;
-  case EAI_MEMORY:
-    return asio::error::no_memory;
-  case EAI_NONAME:
-#if defined(EAI_ADDRFAMILY)
-  case EAI_ADDRFAMILY:
-#endif
-#if defined(EAI_NODATA) && (EAI_NODATA != EAI_NONAME)
-  case EAI_NODATA:
-#endif
-    return asio::error::host_not_found;
-  case EAI_SERVICE:
-    return asio::error::service_not_found;
-  case EAI_SOCKTYPE:
-    return asio::error::socket_type_not_supported;
-  default: // Possibly the non-portable EAI_SYSTEM.
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-    return asio::error_code(
-        WSAGetLastError(), asio::error::get_system_category());
-#else
-    return asio::error_code(
-        errno, asio::error::get_system_category());
-#endif
-  }
-}
-
-asio::error_code getaddrinfo(const char* host,
-    const char* service, const addrinfo_type& hints,
-    addrinfo_type** result, asio::error_code& ec)
-{
-  host = (host && *host) ? host : 0;
-  service = (service && *service) ? service : 0;
-  clear_last_error();
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-# if defined(ASIO_HAS_GETADDRINFO)
-  // Building for Windows XP, Windows Server 2003, or later.
-  int error = ::getaddrinfo(host, service, &hints, result);
-  return ec = translate_addrinfo_error(error);
-# else
-  // Building for Windows 2000 or earlier.
-  typedef int (WSAAPI *gai_t)(const char*,
-      const char*, const addrinfo_type*, addrinfo_type**);
-  if (HMODULE winsock_module = ::GetModuleHandleA("ws2_32"))
-  {
-    if (gai_t gai = (gai_t)::GetProcAddress(winsock_module, "getaddrinfo"))
-    {
-      int error = gai(host, service, &hints, result);
-      return ec = translate_addrinfo_error(error);
-    }
-  }
-  int error = getaddrinfo_emulation(host, service, &hints, result);
-  return ec = translate_addrinfo_error(error);
-# endif
-#elif !defined(ASIO_HAS_GETADDRINFO)
-  int error = getaddrinfo_emulation(host, service, &hints, result);
-  return ec = translate_addrinfo_error(error);
-#else
-  int error = ::getaddrinfo(host, service, &hints, result);
-#if defined(__MACH__) && defined(__APPLE__)
-  using namespace std; // For isdigit and atoi.
-  if (error == 0 && service && isdigit(static_cast<unsigned char>(service[0])))
-  {
-    u_short_type port = host_to_network_short(atoi(service));
-    for (addrinfo_type* ai = *result; ai; ai = ai->ai_next)
-    {
-      switch (ai->ai_family)
-      {
-      case ASIO_OS_DEF(AF_INET):
-        {
-          sockaddr_in4_type* sinptr =
-            reinterpret_cast<sockaddr_in4_type*>(ai->ai_addr);
-          if (sinptr->sin_port == 0)
-            sinptr->sin_port = port;
-          break;
-        }
-      case ASIO_OS_DEF(AF_INET6):
-        {
-          sockaddr_in6_type* sin6ptr =
-            reinterpret_cast<sockaddr_in6_type*>(ai->ai_addr);
-          if (sin6ptr->sin6_port == 0)
-            sin6ptr->sin6_port = port;
-          break;
-        }
-      default:
-        break;
-      }
-    }
-  }
-#endif
-  return ec = translate_addrinfo_error(error);
-#endif
-}
-
-asio::error_code background_getaddrinfo(
-    const weak_cancel_token_type& cancel_token, const char* host,
-    const char* service, const addrinfo_type& hints,
-    addrinfo_type** result, asio::error_code& ec)
-{
-  if (cancel_token.expired())
-    ec = asio::error::operation_aborted;
-  else
-    socket_ops::getaddrinfo(host, service, hints, result, ec);
-  return ec;
-}
-
-void freeaddrinfo(addrinfo_type* ai)
-{
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-# if defined(ASIO_HAS_GETADDRINFO)
-  // Building for Windows XP, Windows Server 2003, or later.
-  ::freeaddrinfo(ai);
-# else
-  // Building for Windows 2000 or earlier.
-  typedef int (WSAAPI *fai_t)(addrinfo_type*);
-  if (HMODULE winsock_module = ::GetModuleHandleA("ws2_32"))
-  {
-    if (fai_t fai = (fai_t)::GetProcAddress(winsock_module, "freeaddrinfo"))
-    {
-      fai(ai);
-      return;
-    }
-  }
-  freeaddrinfo_emulation(ai);
-# endif
-#elif !defined(ASIO_HAS_GETADDRINFO)
-  freeaddrinfo_emulation(ai);
-#else
-  ::freeaddrinfo(ai);
-#endif
-}
-
-asio::error_code getnameinfo(const socket_addr_type* addr,
-    std::size_t addrlen, char* host, std::size_t hostlen,
-    char* serv, std::size_t servlen, int flags, asio::error_code& ec)
-{
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-# if defined(ASIO_HAS_GETADDRINFO)
-  // Building for Windows XP, Windows Server 2003, or later.
-  clear_last_error();
-  int error = ::getnameinfo(addr, static_cast<socklen_t>(addrlen),
-      host, static_cast<DWORD>(hostlen),
-      serv, static_cast<DWORD>(servlen), flags);
-  return ec = translate_addrinfo_error(error);
-# else
-  // Building for Windows 2000 or earlier.
-  typedef int (WSAAPI *gni_t)(const socket_addr_type*,
-      int, char*, DWORD, char*, DWORD, int);
-  if (HMODULE winsock_module = ::GetModuleHandleA("ws2_32"))
-  {
-    if (gni_t gni = (gni_t)::GetProcAddress(winsock_module, "getnameinfo"))
-    {
-      clear_last_error();
-      int error = gni(addr, static_cast<int>(addrlen),
-          host, static_cast<DWORD>(hostlen),
-          serv, static_cast<DWORD>(servlen), flags);
-      return ec = translate_addrinfo_error(error);
-    }
-  }
-  clear_last_error();
-  return getnameinfo_emulation(addr, addrlen,
-      host, hostlen, serv, servlen, flags, ec);
-# endif
-#elif !defined(ASIO_HAS_GETADDRINFO)
-  using namespace std; // For memcpy.
-  sockaddr_storage_type tmp_addr;
-  memcpy(&tmp_addr, addr, addrlen);
-  addr = reinterpret_cast<socket_addr_type*>(&tmp_addr);
-  clear_last_error();
-  return getnameinfo_emulation(addr, addrlen,
-      host, hostlen, serv, servlen, flags, ec);
-#else
-  clear_last_error();
-  int error = ::getnameinfo(addr, addrlen, host, hostlen, serv, servlen, flags);
-  return ec = translate_addrinfo_error(error);
-#endif
-}
-
-asio::error_code sync_getnameinfo(
-    const socket_addr_type* addr, std::size_t addrlen,
-    char* host, std::size_t hostlen, char* serv,
-    std::size_t servlen, int sock_type, asio::error_code& ec)
-{
-  // First try resolving with the service name. If that fails try resolving
-  // but allow the service to be returned as a number.
-  int flags = (sock_type == SOCK_DGRAM) ? NI_DGRAM : 0;
-  socket_ops::getnameinfo(addr, addrlen, host,
-      hostlen, serv, servlen, flags, ec);
-  if (ec)
-  {
-    socket_ops::getnameinfo(addr, addrlen, host, hostlen,
-        serv, servlen, flags | NI_NUMERICSERV, ec);
-  }
-
-  return ec;
-}
-
-asio::error_code background_getnameinfo(
-    const weak_cancel_token_type& cancel_token,
-    const socket_addr_type* addr, std::size_t addrlen,
-    char* host, std::size_t hostlen, char* serv,
-    std::size_t servlen, int sock_type, asio::error_code& ec)
-{
-  if (cancel_token.expired())
-  {
-    ec = asio::error::operation_aborted;
-  }
-  else
-  {
-    // First try resolving with the service name. If that fails try resolving
-    // but allow the service to be returned as a number.
-    int flags = (sock_type == SOCK_DGRAM) ? NI_DGRAM : 0;
-    socket_ops::getnameinfo(addr, addrlen, host,
-        hostlen, serv, servlen, flags, ec);
-    if (ec)
-    {
-      socket_ops::getnameinfo(addr, addrlen, host, hostlen,
-          serv, servlen, flags | NI_NUMERICSERV, ec);
-    }
-  }
-
-  return ec;
-}
-
-#endif // !defined(ASIO_WINDOWS_RUNTIME)
-
-u_long_type network_to_host_long(u_long_type value)
-{
-#if defined(ASIO_WINDOWS_RUNTIME)
-  unsigned char* value_p = reinterpret_cast<unsigned char*>(&value);
-  u_long_type result = (static_cast<u_long_type>(value_p[0]) << 24)
-    | (static_cast<u_long_type>(value_p[1]) << 16)
-    | (static_cast<u_long_type>(value_p[2]) << 8)
-    | static_cast<u_long_type>(value_p[3]);
-  return result;
-#else // defined(ASIO_WINDOWS_RUNTIME)
-  return ntohl(value);
-#endif // defined(ASIO_WINDOWS_RUNTIME)
-}
-
-u_long_type host_to_network_long(u_long_type value)
-{
-#if defined(ASIO_WINDOWS_RUNTIME)
-  u_long_type result;
-  unsigned char* result_p = reinterpret_cast<unsigned char*>(&result);
-  result_p[0] = static_cast<unsigned char>((value >> 24) & 0xFF);
-  result_p[1] = static_cast<unsigned char>((value >> 16) & 0xFF);
-  result_p[2] = static_cast<unsigned char>((value >> 8) & 0xFF);
-  result_p[3] = static_cast<unsigned char>(value & 0xFF);
-  return result;
-#else // defined(ASIO_WINDOWS_RUNTIME)
-  return htonl(value);
-#endif // defined(ASIO_WINDOWS_RUNTIME)
-}
-
-u_short_type network_to_host_short(u_short_type value)
-{
-#if defined(ASIO_WINDOWS_RUNTIME)
-  unsigned char* value_p = reinterpret_cast<unsigned char*>(&value);
-  u_short_type result = (static_cast<u_short_type>(value_p[0]) << 8)
-    | static_cast<u_short_type>(value_p[1]);
-  return result;
-#else // defined(ASIO_WINDOWS_RUNTIME)
-  return ntohs(value);
-#endif // defined(ASIO_WINDOWS_RUNTIME)
-}
-
-u_short_type host_to_network_short(u_short_type value)
-{
-#if defined(ASIO_WINDOWS_RUNTIME)
-  u_short_type result;
-  unsigned char* result_p = reinterpret_cast<unsigned char*>(&result);
-  result_p[0] = static_cast<unsigned char>((value >> 8) & 0xFF);
-  result_p[1] = static_cast<unsigned char>(value & 0xFF);
-  return result;
-#else // defined(ASIO_WINDOWS_RUNTIME)
-  return htons(value);
-#endif // defined(ASIO_WINDOWS_RUNTIME)
-}
-
-} // namespace socket_ops
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_DETAIL_SOCKET_OPS_IPP
diff --git a/lib/asio/detail/impl/socket_select_interrupter.ipp b/lib/asio/detail/impl/socket_select_interrupter.ipp
deleted file mode 100644
index 052f2a7..0000000
--- a/lib/asio/detail/impl/socket_select_interrupter.ipp
+++ /dev/null
@@ -1,176 +0,0 @@
-//
-// detail/impl/socket_select_interrupter.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_SOCKET_SELECT_INTERRUPTER_IPP
-#define ASIO_DETAIL_IMPL_SOCKET_SELECT_INTERRUPTER_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if !defined(ASIO_WINDOWS_RUNTIME)
-
-#if defined(ASIO_WINDOWS) \
-  || defined(__CYGWIN__) \
-  || defined(__SYMBIAN32__)
-
-#include <cstdlib>
-#include "asio/detail/socket_holder.hpp"
-#include "asio/detail/socket_ops.hpp"
-#include "asio/detail/socket_select_interrupter.hpp"
-#include "asio/detail/throw_error.hpp"
-#include "asio/error.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-socket_select_interrupter::socket_select_interrupter()
-{
-  open_descriptors();
-}
-
-void socket_select_interrupter::open_descriptors()
-{
-  asio::error_code ec;
-  socket_holder acceptor(socket_ops::socket(
-        AF_INET, SOCK_STREAM, IPPROTO_TCP, ec));
-  if (acceptor.get() == invalid_socket)
-    asio::detail::throw_error(ec, "socket_select_interrupter");
-
-  int opt = 1;
-  socket_ops::state_type acceptor_state = 0;
-  socket_ops::setsockopt(acceptor.get(), acceptor_state,
-      SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt), ec);
-
-  using namespace std; // For memset.
-  sockaddr_in4_type addr;
-  std::size_t addr_len = sizeof(addr);
-  memset(&addr, 0, sizeof(addr));
-  addr.sin_family = AF_INET;
-  addr.sin_addr.s_addr = socket_ops::host_to_network_long(INADDR_LOOPBACK);
-  addr.sin_port = 0;
-  if (socket_ops::bind(acceptor.get(), (const socket_addr_type*)&addr,
-        addr_len, ec) == socket_error_retval)
-    asio::detail::throw_error(ec, "socket_select_interrupter");
-
-  if (socket_ops::getsockname(acceptor.get(), (socket_addr_type*)&addr,
-        &addr_len, ec) == socket_error_retval)
-    asio::detail::throw_error(ec, "socket_select_interrupter");
-
-  // Some broken firewalls on Windows will intermittently cause getsockname to
-  // return 0.0.0.0 when the socket is actually bound to 127.0.0.1. We
-  // explicitly specify the target address here to work around this problem.
-  if (addr.sin_addr.s_addr == socket_ops::host_to_network_long(INADDR_ANY))
-    addr.sin_addr.s_addr = socket_ops::host_to_network_long(INADDR_LOOPBACK);
-
-  if (socket_ops::listen(acceptor.get(),
-        SOMAXCONN, ec) == socket_error_retval)
-    asio::detail::throw_error(ec, "socket_select_interrupter");
-
-  socket_holder client(socket_ops::socket(
-        AF_INET, SOCK_STREAM, IPPROTO_TCP, ec));
-  if (client.get() == invalid_socket)
-    asio::detail::throw_error(ec, "socket_select_interrupter");
-
-  if (socket_ops::connect(client.get(), (const socket_addr_type*)&addr,
-        addr_len, ec) == socket_error_retval)
-    asio::detail::throw_error(ec, "socket_select_interrupter");
-
-  socket_holder server(socket_ops::accept(acceptor.get(), 0, 0, ec));
-  if (server.get() == invalid_socket)
-    asio::detail::throw_error(ec, "socket_select_interrupter");
-  
-  ioctl_arg_type non_blocking = 1;
-  socket_ops::state_type client_state = 0;
-  if (socket_ops::ioctl(client.get(), client_state,
-        FIONBIO, &non_blocking, ec))
-    asio::detail::throw_error(ec, "socket_select_interrupter");
-
-  opt = 1;
-  socket_ops::setsockopt(client.get(), client_state,
-      IPPROTO_TCP, TCP_NODELAY, &opt, sizeof(opt), ec);
-
-  non_blocking = 1;
-  socket_ops::state_type server_state = 0;
-  if (socket_ops::ioctl(server.get(), server_state,
-        FIONBIO, &non_blocking, ec))
-    asio::detail::throw_error(ec, "socket_select_interrupter");
-
-  opt = 1;
-  socket_ops::setsockopt(server.get(), server_state,
-      IPPROTO_TCP, TCP_NODELAY, &opt, sizeof(opt), ec);
-
-  read_descriptor_ = server.release();
-  write_descriptor_ = client.release();
-}
-
-socket_select_interrupter::~socket_select_interrupter()
-{
-  close_descriptors();
-}
-
-void socket_select_interrupter::close_descriptors()
-{
-  asio::error_code ec;
-  socket_ops::state_type state = socket_ops::internal_non_blocking;
-  if (read_descriptor_ != invalid_socket)
-    socket_ops::close(read_descriptor_, state, true, ec);
-  if (write_descriptor_ != invalid_socket)
-    socket_ops::close(write_descriptor_, state, true, ec);
-}
-
-void socket_select_interrupter::recreate()
-{
-  close_descriptors();
-
-  write_descriptor_ = invalid_socket;
-  read_descriptor_ = invalid_socket;
-
-  open_descriptors();
-}
-
-void socket_select_interrupter::interrupt()
-{
-  char byte = 0;
-  socket_ops::buf b;
-  socket_ops::init_buf(b, &byte, 1);
-  asio::error_code ec;
-  socket_ops::send(write_descriptor_, &b, 1, 0, ec);
-}
-
-bool socket_select_interrupter::reset()
-{
-  char data[1024];
-  socket_ops::buf b;
-  socket_ops::init_buf(b, data, sizeof(data));
-  asio::error_code ec;
-  int bytes_read = socket_ops::recv(read_descriptor_, &b, 1, 0, ec);
-  bool was_interrupted = (bytes_read > 0);
-  while (bytes_read == sizeof(data))
-    bytes_read = socket_ops::recv(read_descriptor_, &b, 1, 0, ec);
-  return was_interrupted;
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_WINDOWS)
-       // || defined(__CYGWIN__)
-       // || defined(__SYMBIAN32__)
-
-#endif // !defined(ASIO_WINDOWS_RUNTIME)
-
-#endif // ASIO_DETAIL_IMPL_SOCKET_SELECT_INTERRUPTER_IPP
diff --git a/lib/asio/detail/impl/strand_executor_service.hpp b/lib/asio/detail/impl/strand_executor_service.hpp
deleted file mode 100644
index 0e18ca0..0000000
--- a/lib/asio/detail/impl/strand_executor_service.hpp
+++ /dev/null
@@ -1,179 +0,0 @@
-//
-// detail/impl/strand_executor_service.hpp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_STRAND_EXECUTOR_SERVICE_HPP
-#define ASIO_DETAIL_IMPL_STRAND_EXECUTOR_SERVICE_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/call_stack.hpp"
-#include "asio/detail/fenced_block.hpp"
-#include "asio/detail/handler_invoke_helpers.hpp"
-#include "asio/detail/recycling_allocator.hpp"
-#include "asio/executor_work_guard.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-template <typename Executor>
-class strand_executor_service::invoker
-{
-public:
-  invoker(const implementation_type& impl, Executor& ex)
-    : impl_(impl),
-      work_(ex)
-  {
-  }
-
-  invoker(const invoker& other)
-    : impl_(other.impl_),
-      work_(other.work_)
-  {
-  }
-
-#if defined(ASIO_HAS_MOVE)
-  invoker(invoker&& other)
-    : impl_(ASIO_MOVE_CAST(implementation_type)(other.impl_)),
-      work_(ASIO_MOVE_CAST(executor_work_guard<Executor>)(other.work_))
-  {
-  }
-#endif // defined(ASIO_HAS_MOVE)
-
-  struct on_invoker_exit
-  {
-    invoker* this_;
-
-    ~on_invoker_exit()
-    {
-      this_->impl_->mutex_->lock();
-      this_->impl_->ready_queue_.push(this_->impl_->waiting_queue_);
-      bool more_handlers = this_->impl_->locked_ =
-        !this_->impl_->ready_queue_.empty();
-      this_->impl_->mutex_->unlock();
-
-      if (more_handlers)
-      {
-        Executor ex(this_->work_.get_executor());
-        recycling_allocator<void> allocator;
-        ex.post(ASIO_MOVE_CAST(invoker)(*this_), allocator);
-      }
-    }
-  };
-
-  void operator()()
-  {
-    // Indicate that this strand is executing on the current thread.
-    call_stack<strand_impl>::context ctx(impl_.get());
-
-    // Ensure the next handler, if any, is scheduled on block exit.
-    on_invoker_exit on_exit = { this };
-    (void)on_exit;
-
-    // Run all ready handlers. No lock is required since the ready queue is
-    // accessed only within the strand.
-    asio::error_code ec;
-    while (scheduler_operation* o = impl_->ready_queue_.front())
-    {
-      impl_->ready_queue_.pop();
-      o->complete(impl_.get(), ec, 0);
-    }
-  }
-
-private:
-  implementation_type impl_;
-  executor_work_guard<Executor> work_;
-};
-
-template <typename Executor, typename Function, typename Allocator>
-void strand_executor_service::dispatch(const implementation_type& impl,
-    Executor& ex, ASIO_MOVE_ARG(Function) function, const Allocator& a)
-{
-  typedef typename decay<Function>::type function_type;
-
-  // If we are already in the strand then the function can run immediately.
-  if (call_stack<strand_impl>::contains(impl.get()))
-  {
-    // Make a local, non-const copy of the function.
-    function_type tmp(ASIO_MOVE_CAST(Function)(function));
-
-    fenced_block b(fenced_block::full);
-    asio_handler_invoke_helpers::invoke(tmp, tmp);
-    return;
-  }
-
-  // Allocate and construct an operation to wrap the function.
-  typedef executor_op<function_type, Allocator> op;
-  typename op::ptr p = { detail::addressof(a), op::ptr::allocate(a), 0 };
-  p.p = new (p.v) op(ASIO_MOVE_CAST(Function)(function), a);
-
-  ASIO_HANDLER_CREATION((impl->service_->context(), *p.p,
-        "strand_executor", impl.get(), 0, "dispatch"));
-
-  // Add the function to the strand and schedule the strand if required.
-  bool first = enqueue(impl, p.p);
-  p.v = p.p = 0;
-  if (first)
-    ex.dispatch(invoker<Executor>(impl, ex), a);
-}
-
-// Request invocation of the given function and return immediately.
-template <typename Executor, typename Function, typename Allocator>
-void strand_executor_service::post(const implementation_type& impl,
-    Executor& ex, ASIO_MOVE_ARG(Function) function, const Allocator& a)
-{
-  typedef typename decay<Function>::type function_type;
-
-  // Allocate and construct an operation to wrap the function.
-  typedef executor_op<function_type, Allocator> op;
-  typename op::ptr p = { detail::addressof(a), op::ptr::allocate(a), 0 };
-  p.p = new (p.v) op(ASIO_MOVE_CAST(Function)(function), a);
-
-  ASIO_HANDLER_CREATION((impl->service_->context(), *p.p,
-        "strand_executor", impl.get(), 0, "post"));
-
-  // Add the function to the strand and schedule the strand if required.
-  bool first = enqueue(impl, p.p);
-  p.v = p.p = 0;
-  if (first)
-    ex.post(invoker<Executor>(impl, ex), a);
-}
-
-// Request invocation of the given function and return immediately.
-template <typename Executor, typename Function, typename Allocator>
-void strand_executor_service::defer(const implementation_type& impl,
-    Executor& ex, ASIO_MOVE_ARG(Function) function, const Allocator& a)
-{
-  typedef typename decay<Function>::type function_type;
-
-  // Allocate and construct an operation to wrap the function.
-  typedef executor_op<function_type, Allocator> op;
-  typename op::ptr p = { detail::addressof(a), op::ptr::allocate(a), 0 };
-  p.p = new (p.v) op(ASIO_MOVE_CAST(Function)(function), a);
-
-  ASIO_HANDLER_CREATION((impl->service_->context(), *p.p,
-        "strand_executor", impl.get(), 0, "defer"));
-
-  // Add the function to the strand and schedule the strand if required.
-  bool first = enqueue(impl, p.p);
-  p.v = p.p = 0;
-  if (first)
-    ex.defer(invoker<Executor>(impl, ex), a);
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_DETAIL_IMPL_STRAND_EXECUTOR_SERVICE_HPP
diff --git a/lib/asio/detail/impl/strand_executor_service.ipp b/lib/asio/detail/impl/strand_executor_service.ipp
deleted file mode 100644
index 365652e..0000000
--- a/lib/asio/detail/impl/strand_executor_service.ipp
+++ /dev/null
@@ -1,134 +0,0 @@
-//
-// detail/impl/strand_executor_service.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_STRAND_EXECUTOR_SERVICE_IPP
-#define ASIO_DETAIL_IMPL_STRAND_EXECUTOR_SERVICE_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include "asio/detail/strand_executor_service.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-strand_executor_service::strand_executor_service(execution_context& ctx)
-  : execution_context_service_base<strand_executor_service>(ctx),
-    mutex_(),
-    salt_(0),
-    impl_list_(0)
-{
-}
-
-void strand_executor_service::shutdown()
-{
-  op_queue<scheduler_operation> ops;
-
-  asio::detail::mutex::scoped_lock lock(mutex_);
-
-  strand_impl* impl = impl_list_;
-  while (impl)
-  {
-    impl->mutex_->lock();
-    impl->shutdown_ = true;
-    ops.push(impl->waiting_queue_);
-    ops.push(impl->ready_queue_);
-    impl->mutex_->unlock();
-    impl = impl->next_;
-  }
-}
-
-strand_executor_service::implementation_type
-strand_executor_service::create_implementation()
-{
-  implementation_type new_impl(new strand_impl);
-  new_impl->locked_ = false;
-  new_impl->shutdown_ = false;
-
-  asio::detail::mutex::scoped_lock lock(mutex_);
-
-  // Select a mutex from the pool of shared mutexes.
-  std::size_t salt = salt_++;
-  std::size_t mutex_index = reinterpret_cast<std::size_t>(new_impl.get());
-  mutex_index += (reinterpret_cast<std::size_t>(new_impl.get()) >> 3);
-  mutex_index ^= salt + 0x9e3779b9 + (mutex_index << 6) + (mutex_index >> 2);
-  mutex_index = mutex_index % num_mutexes;
-  if (!mutexes_[mutex_index].get())
-    mutexes_[mutex_index].reset(new mutex);
-  new_impl->mutex_ = mutexes_[mutex_index].get();
-
-  // Insert implementation into linked list of all implementations.
-  new_impl->next_ = impl_list_;
-  new_impl->prev_ = 0;
-  if (impl_list_)
-    impl_list_->prev_ = new_impl.get();
-  impl_list_ = new_impl.get();
-  new_impl->service_ = this;
-
-  return new_impl;
-}
-
-strand_executor_service::strand_impl::~strand_impl()
-{
-  asio::detail::mutex::scoped_lock lock(service_->mutex_);
-
-  // Remove implementation from linked list of all implementations.
-  if (service_->impl_list_ == this)
-    service_->impl_list_ = next_;
-  if (prev_)
-    prev_->next_ = next_;
-  if (next_)
-    next_->prev_= prev_;
-}
-
-bool strand_executor_service::enqueue(const implementation_type& impl,
-    scheduler_operation* op)
-{
-  impl->mutex_->lock();
-  if (impl->shutdown_)
-  {
-    impl->mutex_->unlock();
-    op->destroy();
-    return false;
-  }
-  else if (impl->locked_)
-  {
-    // Some other function already holds the strand lock. Enqueue for later.
-    impl->waiting_queue_.push(op);
-    impl->mutex_->unlock();
-    return false;
-  }
-  else
-  {
-    // The function is acquiring the strand lock and so is responsible for
-    // scheduling the strand.
-    impl->locked_ = true;
-    impl->mutex_->unlock();
-    impl->ready_queue_.push(op);
-    return true;
-  }
-}
-
-bool strand_executor_service::running_in_this_thread(
-    const implementation_type& impl)
-{
-  return !!call_stack<strand_impl>::contains(impl.get());
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_DETAIL_IMPL_STRAND_EXECUTOR_SERVICE_IPP
diff --git a/lib/asio/detail/impl/strand_service.hpp b/lib/asio/detail/impl/strand_service.hpp
deleted file mode 100644
index da5b716..0000000
--- a/lib/asio/detail/impl/strand_service.hpp
+++ /dev/null
@@ -1,118 +0,0 @@
-//
-// detail/impl/strand_service.hpp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_STRAND_SERVICE_HPP
-#define ASIO_DETAIL_IMPL_STRAND_SERVICE_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/call_stack.hpp"
-#include "asio/detail/completion_handler.hpp"
-#include "asio/detail/fenced_block.hpp"
-#include "asio/detail/handler_alloc_helpers.hpp"
-#include "asio/detail/handler_invoke_helpers.hpp"
-#include "asio/detail/memory.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-inline strand_service::strand_impl::strand_impl()
-  : operation(&strand_service::do_complete),
-    locked_(false)
-{
-}
-
-struct strand_service::on_dispatch_exit
-{
-  io_context_impl* io_context_;
-  strand_impl* impl_;
-
-  ~on_dispatch_exit()
-  {
-    impl_->mutex_.lock();
-    impl_->ready_queue_.push(impl_->waiting_queue_);
-    bool more_handlers = impl_->locked_ = !impl_->ready_queue_.empty();
-    impl_->mutex_.unlock();
-
-    if (more_handlers)
-      io_context_->post_immediate_completion(impl_, false);
-  }
-};
-
-template <typename Handler>
-void strand_service::dispatch(strand_service::implementation_type& impl,
-    Handler& handler)
-{
-  // If we are already in the strand then the handler can run immediately.
-  if (call_stack<strand_impl>::contains(impl))
-  {
-    fenced_block b(fenced_block::full);
-    asio_handler_invoke_helpers::invoke(handler, handler);
-    return;
-  }
-
-  // Allocate and construct an operation to wrap the handler.
-  typedef completion_handler<Handler> op;
-  typename op::ptr p = { asio::detail::addressof(handler),
-    op::ptr::allocate(handler), 0 };
-  p.p = new (p.v) op(handler);
-
-  ASIO_HANDLER_CREATION((this->context(),
-        *p.p, "strand", impl, 0, "dispatch"));
-
-  bool dispatch_immediately = do_dispatch(impl, p.p);
-  operation* o = p.p;
-  p.v = p.p = 0;
-
-  if (dispatch_immediately)
-  {
-    // Indicate that this strand is executing on the current thread.
-    call_stack<strand_impl>::context ctx(impl);
-
-    // Ensure the next handler, if any, is scheduled on block exit.
-    on_dispatch_exit on_exit = { &io_context_, impl };
-    (void)on_exit;
-
-    completion_handler<Handler>::do_complete(
-        &io_context_, o, asio::error_code(), 0);
-  }
-}
-
-// Request the io_context to invoke the given handler and return immediately.
-template <typename Handler>
-void strand_service::post(strand_service::implementation_type& impl,
-    Handler& handler)
-{
-  bool is_continuation =
-    asio_handler_cont_helpers::is_continuation(handler);
-
-  // Allocate and construct an operation to wrap the handler.
-  typedef completion_handler<Handler> op;
-  typename op::ptr p = { asio::detail::addressof(handler),
-    op::ptr::allocate(handler), 0 };
-  p.p = new (p.v) op(handler);
-
-  ASIO_HANDLER_CREATION((this->context(),
-        *p.p, "strand", impl, 0, "post"));
-
-  do_post(impl, p.p, is_continuation);
-  p.v = p.p = 0;
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_DETAIL_IMPL_STRAND_SERVICE_HPP
diff --git a/lib/asio/detail/impl/strand_service.ipp b/lib/asio/detail/impl/strand_service.ipp
deleted file mode 100644
index cbaf25b..0000000
--- a/lib/asio/detail/impl/strand_service.ipp
+++ /dev/null
@@ -1,177 +0,0 @@
-//
-// detail/impl/strand_service.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_STRAND_SERVICE_IPP
-#define ASIO_DETAIL_IMPL_STRAND_SERVICE_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include "asio/detail/call_stack.hpp"
-#include "asio/detail/strand_service.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-struct strand_service::on_do_complete_exit
-{
-  io_context_impl* owner_;
-  strand_impl* impl_;
-
-  ~on_do_complete_exit()
-  {
-    impl_->mutex_.lock();
-    impl_->ready_queue_.push(impl_->waiting_queue_);
-    bool more_handlers = impl_->locked_ = !impl_->ready_queue_.empty();
-    impl_->mutex_.unlock();
-
-    if (more_handlers)
-      owner_->post_immediate_completion(impl_, true);
-  }
-};
-
-strand_service::strand_service(asio::io_context& io_context)
-  : asio::detail::service_base<strand_service>(io_context),
-    io_context_(asio::use_service<io_context_impl>(io_context)),
-    mutex_(),
-    salt_(0)
-{
-}
-
-void strand_service::shutdown()
-{
-  op_queue<operation> ops;
-
-  asio::detail::mutex::scoped_lock lock(mutex_);
-
-  for (std::size_t i = 0; i < num_implementations; ++i)
-  {
-    if (strand_impl* impl = implementations_[i].get())
-    {
-      ops.push(impl->waiting_queue_);
-      ops.push(impl->ready_queue_);
-    }
-  }
-}
-
-void strand_service::construct(strand_service::implementation_type& impl)
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-
-  std::size_t salt = salt_++;
-#if defined(ASIO_ENABLE_SEQUENTIAL_STRAND_ALLOCATION)
-  std::size_t index = salt;
-#else // defined(ASIO_ENABLE_SEQUENTIAL_STRAND_ALLOCATION)
-  std::size_t index = reinterpret_cast<std::size_t>(&impl);
-  index += (reinterpret_cast<std::size_t>(&impl) >> 3);
-  index ^= salt + 0x9e3779b9 + (index << 6) + (index >> 2);
-#endif // defined(ASIO_ENABLE_SEQUENTIAL_STRAND_ALLOCATION)
-  index = index % num_implementations;
-
-  if (!implementations_[index].get())
-    implementations_[index].reset(new strand_impl);
-  impl = implementations_[index].get();
-}
-
-bool strand_service::running_in_this_thread(
-    const implementation_type& impl) const
-{
-  return call_stack<strand_impl>::contains(impl) != 0;
-}
-
-bool strand_service::do_dispatch(implementation_type& impl, operation* op)
-{
-  // If we are running inside the io_context, and no other handler already
-  // holds the strand lock, then the handler can run immediately.
-  bool can_dispatch = io_context_.can_dispatch();
-  impl->mutex_.lock();
-  if (can_dispatch && !impl->locked_)
-  {
-    // Immediate invocation is allowed.
-    impl->locked_ = true;
-    impl->mutex_.unlock();
-    return true;
-  }
-
-  if (impl->locked_)
-  {
-    // Some other handler already holds the strand lock. Enqueue for later.
-    impl->waiting_queue_.push(op);
-    impl->mutex_.unlock();
-  }
-  else
-  {
-    // The handler is acquiring the strand lock and so is responsible for
-    // scheduling the strand.
-    impl->locked_ = true;
-    impl->mutex_.unlock();
-    impl->ready_queue_.push(op);
-    io_context_.post_immediate_completion(impl, false);
-  }
-
-  return false;
-}
-
-void strand_service::do_post(implementation_type& impl,
-    operation* op, bool is_continuation)
-{
-  impl->mutex_.lock();
-  if (impl->locked_)
-  {
-    // Some other handler already holds the strand lock. Enqueue for later.
-    impl->waiting_queue_.push(op);
-    impl->mutex_.unlock();
-  }
-  else
-  {
-    // The handler is acquiring the strand lock and so is responsible for
-    // scheduling the strand.
-    impl->locked_ = true;
-    impl->mutex_.unlock();
-    impl->ready_queue_.push(op);
-    io_context_.post_immediate_completion(impl, is_continuation);
-  }
-}
-
-void strand_service::do_complete(void* owner, operation* base,
-    const asio::error_code& ec, std::size_t /*bytes_transferred*/)
-{
-  if (owner)
-  {
-    strand_impl* impl = static_cast<strand_impl*>(base);
-
-    // Indicate that this strand is executing on the current thread.
-    call_stack<strand_impl>::context ctx(impl);
-
-    // Ensure the next handler, if any, is scheduled on block exit.
-    on_do_complete_exit on_exit;
-    on_exit.owner_ = static_cast<io_context_impl*>(owner);
-    on_exit.impl_ = impl;
-
-    // Run all ready handlers. No lock is required since the ready queue is
-    // accessed only within the strand.
-    while (operation* o = impl->ready_queue_.front())
-    {
-      impl->ready_queue_.pop();
-      o->complete(owner, ec, 0);
-    }
-  }
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_DETAIL_IMPL_STRAND_SERVICE_IPP
diff --git a/lib/asio/detail/impl/throw_error.ipp b/lib/asio/detail/impl/throw_error.ipp
deleted file mode 100644
index a540cd2..0000000
--- a/lib/asio/detail/impl/throw_error.ipp
+++ /dev/null
@@ -1,60 +0,0 @@
-//
-// detail/impl/throw_error.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_THROW_ERROR_IPP
-#define ASIO_DETAIL_IMPL_THROW_ERROR_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include "asio/detail/throw_error.hpp"
-#include "asio/detail/throw_exception.hpp"
-#include "asio/system_error.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-void do_throw_error(const asio::error_code& err)
-{
-  asio::system_error e(err);
-  asio::detail::throw_exception(e);
-}
-
-void do_throw_error(const asio::error_code& err, const char* location)
-{
-  // boostify: non-boost code starts here
-#if defined(ASIO_MSVC) && defined(ASIO_HAS_STD_SYSTEM_ERROR)
-  // Microsoft's implementation of std::system_error is non-conformant in that
-  // it ignores the error code's message when a "what" string is supplied. We'll
-  // work around this by explicitly formatting the "what" string.
-  std::string what_msg = location;
-  what_msg += ": ";
-  what_msg += err.message();
-  asio::system_error e(err, what_msg);
-  asio::detail::throw_exception(e);
-#else // defined(ASIO_MSVC) && defined(ASIO_HAS_STD_SYSTEM_ERROR)
-  // boostify: non-boost code ends here
-  asio::system_error e(err, location);
-  asio::detail::throw_exception(e);
-  // boostify: non-boost code starts here
-#endif // defined(ASIO_MSVC) && defined(ASIO_HAS_STD_SYSTEM_ERROR)
-  // boostify: non-boost code ends here
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_DETAIL_IMPL_THROW_ERROR_IPP
diff --git a/lib/asio/detail/impl/timer_queue_ptime.ipp b/lib/asio/detail/impl/timer_queue_ptime.ipp
deleted file mode 100644
index 742837f..0000000
--- a/lib/asio/detail/impl/timer_queue_ptime.ipp
+++ /dev/null
@@ -1,91 +0,0 @@
-//
-// detail/impl/timer_queue_ptime.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_TIMER_QUEUE_PTIME_IPP
-#define ASIO_DETAIL_IMPL_TIMER_QUEUE_PTIME_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_HAS_BOOST_DATE_TIME)
-
-#include "asio/detail/timer_queue_ptime.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-timer_queue<time_traits<boost::posix_time::ptime> >::timer_queue()
-{
-}
-
-timer_queue<time_traits<boost::posix_time::ptime> >::~timer_queue()
-{
-}
-
-bool timer_queue<time_traits<boost::posix_time::ptime> >::enqueue_timer(
-    const time_type& time, per_timer_data& timer, wait_op* op)
-{
-  return impl_.enqueue_timer(time, timer, op);
-}
-
-bool timer_queue<time_traits<boost::posix_time::ptime> >::empty() const
-{
-  return impl_.empty();
-}
-
-long timer_queue<time_traits<boost::posix_time::ptime> >::wait_duration_msec(
-    long max_duration) const
-{
-  return impl_.wait_duration_msec(max_duration);
-}
-
-long timer_queue<time_traits<boost::posix_time::ptime> >::wait_duration_usec(
-    long max_duration) const
-{
-  return impl_.wait_duration_usec(max_duration);
-}
-
-void timer_queue<time_traits<boost::posix_time::ptime> >::get_ready_timers(
-    op_queue<operation>& ops)
-{
-  impl_.get_ready_timers(ops);
-}
-
-void timer_queue<time_traits<boost::posix_time::ptime> >::get_all_timers(
-    op_queue<operation>& ops)
-{
-  impl_.get_all_timers(ops);
-}
-
-std::size_t timer_queue<time_traits<boost::posix_time::ptime> >::cancel_timer(
-    per_timer_data& timer, op_queue<operation>& ops, std::size_t max_cancelled)
-{
-  return impl_.cancel_timer(timer, ops, max_cancelled);
-}
-
-void timer_queue<time_traits<boost::posix_time::ptime> >::move_timer(
-    per_timer_data& target, per_timer_data& source)
-{
-  impl_.move_timer(target, source);
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_HAS_BOOST_DATE_TIME)
-
-#endif // ASIO_DETAIL_IMPL_TIMER_QUEUE_PTIME_IPP
diff --git a/lib/asio/detail/impl/timer_queue_set.ipp b/lib/asio/detail/impl/timer_queue_set.ipp
deleted file mode 100644
index b516548..0000000
--- a/lib/asio/detail/impl/timer_queue_set.ipp
+++ /dev/null
@@ -1,101 +0,0 @@
-//
-// detail/impl/timer_queue_set.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_TIMER_QUEUE_SET_IPP
-#define ASIO_DETAIL_IMPL_TIMER_QUEUE_SET_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include "asio/detail/timer_queue_set.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-timer_queue_set::timer_queue_set()
-  : first_(0)
-{
-}
-
-void timer_queue_set::insert(timer_queue_base* q)
-{
-  q->next_ = first_;
-  first_ = q;
-}
-
-void timer_queue_set::erase(timer_queue_base* q)
-{
-  if (first_)
-  {
-    if (q == first_)
-    {
-      first_ = q->next_;
-      q->next_ = 0;
-      return;
-    }
-
-    for (timer_queue_base* p = first_; p->next_; p = p->next_)
-    {
-      if (p->next_ == q)
-      {
-        p->next_ = q->next_;
-        q->next_ = 0;
-        return;
-      }
-    }
-  }
-}
-
-bool timer_queue_set::all_empty() const
-{
-  for (timer_queue_base* p = first_; p; p = p->next_)
-    if (!p->empty())
-      return false;
-  return true;
-}
-
-long timer_queue_set::wait_duration_msec(long max_duration) const
-{
-  long min_duration = max_duration;
-  for (timer_queue_base* p = first_; p; p = p->next_)
-    min_duration = p->wait_duration_msec(min_duration);
-  return min_duration;
-}
-
-long timer_queue_set::wait_duration_usec(long max_duration) const
-{
-  long min_duration = max_duration;
-  for (timer_queue_base* p = first_; p; p = p->next_)
-    min_duration = p->wait_duration_usec(min_duration);
-  return min_duration;
-}
-
-void timer_queue_set::get_ready_timers(op_queue<operation>& ops)
-{
-  for (timer_queue_base* p = first_; p; p = p->next_)
-    p->get_ready_timers(ops);
-}
-
-void timer_queue_set::get_all_timers(op_queue<operation>& ops)
-{
-  for (timer_queue_base* p = first_; p; p = p->next_)
-    p->get_all_timers(ops);
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_DETAIL_IMPL_TIMER_QUEUE_SET_IPP
diff --git a/lib/asio/detail/impl/win_event.ipp b/lib/asio/detail/impl/win_event.ipp
deleted file mode 100644
index 6f74649..0000000
--- a/lib/asio/detail/impl/win_event.ipp
+++ /dev/null
@@ -1,76 +0,0 @@
-//
-// detail/win_event.ipp
-// ~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_WIN_EVENT_IPP
-#define ASIO_DETAIL_IMPL_WIN_EVENT_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_WINDOWS)
-
-#include "asio/detail/throw_error.hpp"
-#include "asio/detail/win_event.hpp"
-#include "asio/error.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-win_event::win_event()
-  : state_(0)
-{
-#if defined(ASIO_WINDOWS_APP)
-  events_[0] = ::CreateEventExW(0, 0,
-      CREATE_EVENT_MANUAL_RESET, EVENT_ALL_ACCESS);
-#else // defined(ASIO_WINDOWS_APP)
-  events_[0] = ::CreateEventW(0, true, false, 0);
-#endif // defined(ASIO_WINDOWS_APP)
-  if (!events_[0])
-  {
-    DWORD last_error = ::GetLastError();
-    asio::error_code ec(last_error,
-        asio::error::get_system_category());
-    asio::detail::throw_error(ec, "event");
-  }
-
-#if defined(ASIO_WINDOWS_APP)
-  events_[1] = ::CreateEventExW(0, 0, 0, EVENT_ALL_ACCESS);
-#else // defined(ASIO_WINDOWS_APP)
-  events_[1] = ::CreateEventW(0, false, false, 0);
-#endif // defined(ASIO_WINDOWS_APP)
-  if (!events_[1])
-  {
-    DWORD last_error = ::GetLastError();
-    ::CloseHandle(events_[0]);
-    asio::error_code ec(last_error,
-        asio::error::get_system_category());
-    asio::detail::throw_error(ec, "event");
-  }
-}
-
-win_event::~win_event()
-{
-  ::CloseHandle(events_[0]);
-  ::CloseHandle(events_[1]);
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_WINDOWS)
-
-#endif // ASIO_DETAIL_IMPL_WIN_EVENT_IPP
diff --git a/lib/asio/detail/impl/win_iocp_handle_service.ipp b/lib/asio/detail/impl/win_iocp_handle_service.ipp
deleted file mode 100644
index 9cba2b0..0000000
--- a/lib/asio/detail/impl/win_iocp_handle_service.ipp
+++ /dev/null
@@ -1,525 +0,0 @@
-//
-// detail/impl/win_iocp_handle_service.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-// Copyright (c) 2008 Rep Invariant Systems, Inc. (info@repinvariant.com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_WIN_IOCP_HANDLE_SERVICE_IPP
-#define ASIO_DETAIL_IMPL_WIN_IOCP_HANDLE_SERVICE_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_HAS_IOCP)
-
-#include "asio/detail/win_iocp_handle_service.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-class win_iocp_handle_service::overlapped_wrapper
-  : public OVERLAPPED
-{
-public:
-  explicit overlapped_wrapper(asio::error_code& ec)
-  {
-    Internal = 0;
-    InternalHigh = 0;
-    Offset = 0;
-    OffsetHigh = 0;
-
-    // Create a non-signalled manual-reset event, for GetOverlappedResult.
-    hEvent = ::CreateEventW(0, TRUE, FALSE, 0);
-    if (hEvent)
-    {
-      // As documented in GetQueuedCompletionStatus, setting the low order
-      // bit of this event prevents our synchronous writes from being treated
-      // as completion port events.
-      DWORD_PTR tmp = reinterpret_cast<DWORD_PTR>(hEvent);
-      hEvent = reinterpret_cast<HANDLE>(tmp | 1);
-    }
-    else
-    {
-      DWORD last_error = ::GetLastError();
-      ec = asio::error_code(last_error,
-          asio::error::get_system_category());
-    }
-  }
-
-  ~overlapped_wrapper()
-  {
-    if (hEvent)
-    {
-      ::CloseHandle(hEvent);
-    }
-  }
-};
-
-win_iocp_handle_service::win_iocp_handle_service(
-    asio::io_context& io_context)
-  : service_base<win_iocp_handle_service>(io_context),
-    iocp_service_(asio::use_service<win_iocp_io_context>(io_context)),
-    mutex_(),
-    impl_list_(0)
-{
-}
-
-void win_iocp_handle_service::shutdown()
-{
-  // Close all implementations, causing all operations to complete.
-  asio::detail::mutex::scoped_lock lock(mutex_);
-  implementation_type* impl = impl_list_;
-  while (impl)
-  {
-    close_for_destruction(*impl);
-    impl = impl->next_;
-  }
-}
-
-void win_iocp_handle_service::construct(
-    win_iocp_handle_service::implementation_type& impl)
-{
-  impl.handle_ = INVALID_HANDLE_VALUE;
-  impl.safe_cancellation_thread_id_ = 0;
-
-  // Insert implementation into linked list of all implementations.
-  asio::detail::mutex::scoped_lock lock(mutex_);
-  impl.next_ = impl_list_;
-  impl.prev_ = 0;
-  if (impl_list_)
-    impl_list_->prev_ = &impl;
-  impl_list_ = &impl;
-}
-
-void win_iocp_handle_service::move_construct(
-    win_iocp_handle_service::implementation_type& impl,
-    win_iocp_handle_service::implementation_type& other_impl)
-{
-  impl.handle_ = other_impl.handle_;
-  other_impl.handle_ = INVALID_HANDLE_VALUE;
-
-  impl.safe_cancellation_thread_id_ = other_impl.safe_cancellation_thread_id_;
-  other_impl.safe_cancellation_thread_id_ = 0;
-
-  // Insert implementation into linked list of all implementations.
-  asio::detail::mutex::scoped_lock lock(mutex_);
-  impl.next_ = impl_list_;
-  impl.prev_ = 0;
-  if (impl_list_)
-    impl_list_->prev_ = &impl;
-  impl_list_ = &impl;
-}
-
-void win_iocp_handle_service::move_assign(
-    win_iocp_handle_service::implementation_type& impl,
-    win_iocp_handle_service& other_service,
-    win_iocp_handle_service::implementation_type& other_impl)
-{
-  close_for_destruction(impl);
-
-  if (this != &other_service)
-  {
-    // Remove implementation from linked list of all implementations.
-    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;
-  }
-
-  impl.handle_ = other_impl.handle_;
-  other_impl.handle_ = INVALID_HANDLE_VALUE;
-
-  impl.safe_cancellation_thread_id_ = other_impl.safe_cancellation_thread_id_;
-  other_impl.safe_cancellation_thread_id_ = 0;
-
-  if (this != &other_service)
-  {
-    // Insert implementation into linked list of all implementations.
-    asio::detail::mutex::scoped_lock lock(other_service.mutex_);
-    impl.next_ = other_service.impl_list_;
-    impl.prev_ = 0;
-    if (other_service.impl_list_)
-      other_service.impl_list_->prev_ = &impl;
-    other_service.impl_list_ = &impl;
-  }
-}
-
-void win_iocp_handle_service::destroy(
-    win_iocp_handle_service::implementation_type& impl)
-{
-  close_for_destruction(impl);
-  
-  // Remove implementation from linked list of all implementations.
-  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;
-}
-
-asio::error_code win_iocp_handle_service::assign(
-    win_iocp_handle_service::implementation_type& impl,
-    const native_handle_type& handle, asio::error_code& ec)
-{
-  if (is_open(impl))
-  {
-    ec = asio::error::already_open;
-    return ec;
-  }
-
-  if (iocp_service_.register_handle(handle, ec))
-    return ec;
-
-  impl.handle_ = handle;
-  ec = asio::error_code();
-  return ec;
-}
-
-asio::error_code win_iocp_handle_service::close(
-    win_iocp_handle_service::implementation_type& impl,
-    asio::error_code& ec)
-{
-  if (is_open(impl))
-  {
-    ASIO_HANDLER_OPERATION((iocp_service_.context(), "handle",
-          &impl, reinterpret_cast<uintmax_t>(impl.handle_), "close"));
-
-    if (!::CloseHandle(impl.handle_))
-    {
-      DWORD last_error = ::GetLastError();
-      ec = asio::error_code(last_error,
-          asio::error::get_system_category());
-    }
-    else
-    {
-      ec = asio::error_code();
-    }
-
-    impl.handle_ = INVALID_HANDLE_VALUE;
-    impl.safe_cancellation_thread_id_ = 0;
-  }
-  else
-  {
-    ec = asio::error_code();
-  }
-
-  return ec;
-}
-
-asio::error_code win_iocp_handle_service::cancel(
-    win_iocp_handle_service::implementation_type& impl,
-    asio::error_code& ec)
-{
-  if (!is_open(impl))
-  {
-    ec = asio::error::bad_descriptor;
-    return ec;
-  }
-
-  ASIO_HANDLER_OPERATION((iocp_service_.context(), "handle",
-        &impl, reinterpret_cast<uintmax_t>(impl.handle_), "cancel"));
-
-  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;
-    if (!cancel_io_ex(impl.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 = asio::error_code();
-      }
-      else
-      {
-        ec = asio::error_code(last_error,
-            asio::error::get_system_category());
-      }
-    }
-    else
-    {
-      ec = asio::error_code();
-    }
-  }
-  else if (impl.safe_cancellation_thread_id_ == 0)
-  {
-    // No operations have been started, so there's nothing to cancel.
-    ec = asio::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.
-    if (!::CancelIo(impl.handle_))
-    {
-      DWORD last_error = ::GetLastError();
-      ec = asio::error_code(last_error,
-          asio::error::get_system_category());
-    }
-    else
-    {
-      ec = asio::error_code();
-    }
-  }
-  else
-  {
-    // Asynchronous operations have been started from more than one thread,
-    // so cancellation is not safe.
-    ec = asio::error::operation_not_supported;
-  }
-
-  return ec;
-}
-
-size_t win_iocp_handle_service::do_write(
-    win_iocp_handle_service::implementation_type& impl, uint64_t offset,
-    const asio::const_buffer& buffer, asio::error_code& ec)
-{
-  if (!is_open(impl))
-  {
-    ec = asio::error::bad_descriptor;
-    return 0;
-  }
-
-  // A request to write 0 bytes on a handle is a no-op.
-  if (buffer.size() == 0)
-  {
-    ec = asio::error_code();
-    return 0;
-  }
-
-  overlapped_wrapper overlapped(ec);
-  if (ec)
-  {
-    return 0;
-  }
-
-  // Write the data. 
-  overlapped.Offset = offset & 0xFFFFFFFF;
-  overlapped.OffsetHigh = (offset >> 32) & 0xFFFFFFFF;
-  BOOL ok = ::WriteFile(impl.handle_, buffer.data(),
-      static_cast<DWORD>(buffer.size()), 0, &overlapped);
-  if (!ok) 
-  {
-    DWORD last_error = ::GetLastError();
-    if (last_error != ERROR_IO_PENDING)
-    {
-      ec = asio::error_code(last_error,
-          asio::error::get_system_category());
-      return 0;
-    }
-  }
-
-  // Wait for the operation to complete.
-  DWORD bytes_transferred = 0;
-  ok = ::GetOverlappedResult(impl.handle_,
-      &overlapped, &bytes_transferred, TRUE);
-  if (!ok)
-  {
-    DWORD last_error = ::GetLastError();
-    ec = asio::error_code(last_error,
-        asio::error::get_system_category());
-    return 0;
-  }
-
-  ec = asio::error_code();
-  return bytes_transferred;
-}
-
-void win_iocp_handle_service::start_write_op(
-    win_iocp_handle_service::implementation_type& impl, uint64_t offset,
-    const asio::const_buffer& buffer, operation* op)
-{
-  update_cancellation_thread_id(impl);
-  iocp_service_.work_started();
-
-  if (!is_open(impl))
-  {
-    iocp_service_.on_completion(op, asio::error::bad_descriptor);
-  }
-  else if (buffer.size() == 0)
-  {
-    // A request to write 0 bytes on a handle is a no-op.
-    iocp_service_.on_completion(op);
-  }
-  else
-  {
-    DWORD bytes_transferred = 0;
-    op->Offset = offset & 0xFFFFFFFF;
-    op->OffsetHigh = (offset >> 32) & 0xFFFFFFFF;
-    BOOL ok = ::WriteFile(impl.handle_, buffer.data(),
-        static_cast<DWORD>(buffer.size()),
-        &bytes_transferred, op);
-    DWORD last_error = ::GetLastError();
-    if (!ok && last_error != ERROR_IO_PENDING
-        && last_error != ERROR_MORE_DATA)
-    {
-      iocp_service_.on_completion(op, last_error, bytes_transferred);
-    }
-    else
-    {
-      iocp_service_.on_pending(op);
-    }
-  }
-}
-
-size_t win_iocp_handle_service::do_read(
-    win_iocp_handle_service::implementation_type& impl, uint64_t offset,
-    const asio::mutable_buffer& buffer, asio::error_code& ec)
-{
-  if (!is_open(impl))
-  {
-    ec = asio::error::bad_descriptor;
-    return 0;
-  }
-  
-  // A request to read 0 bytes on a stream handle is a no-op.
-  if (buffer.size() == 0)
-  {
-    ec = asio::error_code();
-    return 0;
-  }
-
-  overlapped_wrapper overlapped(ec);
-  if (ec)
-  {
-    return 0;
-  }
-
-  // Read some data.
-  overlapped.Offset = offset & 0xFFFFFFFF;
-  overlapped.OffsetHigh = (offset >> 32) & 0xFFFFFFFF;
-  BOOL ok = ::ReadFile(impl.handle_, buffer.data(),
-      static_cast<DWORD>(buffer.size()), 0, &overlapped);
-  if (!ok) 
-  {
-    DWORD last_error = ::GetLastError();
-    if (last_error != ERROR_IO_PENDING && last_error != ERROR_MORE_DATA)
-    {
-      if (last_error == ERROR_HANDLE_EOF)
-      {
-        ec = asio::error::eof;
-      }
-      else
-      {
-        ec = asio::error_code(last_error,
-            asio::error::get_system_category());
-      }
-      return 0;
-    }
-  }
-
-  // Wait for the operation to complete.
-  DWORD bytes_transferred = 0;
-  ok = ::GetOverlappedResult(impl.handle_,
-      &overlapped, &bytes_transferred, TRUE);
-  if (!ok)
-  {
-    DWORD last_error = ::GetLastError();
-    if (last_error == ERROR_HANDLE_EOF)
-    {
-      ec = asio::error::eof;
-    }
-    else
-    {
-      ec = asio::error_code(last_error,
-          asio::error::get_system_category());
-    }
-    return (last_error == ERROR_MORE_DATA) ? bytes_transferred : 0;
-  }
-
-  ec = asio::error_code();
-  return bytes_transferred;
-}
-
-void win_iocp_handle_service::start_read_op(
-    win_iocp_handle_service::implementation_type& impl, uint64_t offset,
-    const asio::mutable_buffer& buffer, operation* op)
-{
-  update_cancellation_thread_id(impl);
-  iocp_service_.work_started();
-
-  if (!is_open(impl))
-  {
-    iocp_service_.on_completion(op, asio::error::bad_descriptor);
-  }
-  else if (buffer.size() == 0)
-  {
-    // A request to read 0 bytes on a handle is a no-op.
-    iocp_service_.on_completion(op);
-  }
-  else
-  {
-    DWORD bytes_transferred = 0;
-    op->Offset = offset & 0xFFFFFFFF;
-    op->OffsetHigh = (offset >> 32) & 0xFFFFFFFF;
-    BOOL ok = ::ReadFile(impl.handle_, buffer.data(),
-        static_cast<DWORD>(buffer.size()),
-        &bytes_transferred, op);
-    DWORD last_error = ::GetLastError();
-    if (!ok && last_error != ERROR_IO_PENDING
-        && last_error != ERROR_MORE_DATA)
-    {
-      iocp_service_.on_completion(op, last_error, bytes_transferred);
-    }
-    else
-    {
-      iocp_service_.on_pending(op);
-    }
-  }
-}
-
-void win_iocp_handle_service::update_cancellation_thread_id(
-    win_iocp_handle_service::implementation_type& impl)
-{
-  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);
-}
-
-void win_iocp_handle_service::close_for_destruction(implementation_type& impl)
-{
-  if (is_open(impl))
-  {
-    ASIO_HANDLER_OPERATION((iocp_service_.context(), "handle",
-          &impl, reinterpret_cast<uintmax_t>(impl.handle_), "close"));
-
-    ::CloseHandle(impl.handle_);
-    impl.handle_ = INVALID_HANDLE_VALUE;
-    impl.safe_cancellation_thread_id_ = 0;
-  }
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_HAS_IOCP)
-
-#endif // ASIO_DETAIL_IMPL_WIN_IOCP_HANDLE_SERVICE_IPP
diff --git a/lib/asio/detail/impl/win_iocp_io_context.hpp b/lib/asio/detail/impl/win_iocp_io_context.hpp
deleted file mode 100644
index 44887d7..0000000
--- a/lib/asio/detail/impl/win_iocp_io_context.hpp
+++ /dev/null
@@ -1,103 +0,0 @@
-//
-// detail/impl/win_iocp_io_context.hpp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_WIN_IOCP_IO_CONTEXT_HPP
-#define ASIO_DETAIL_IMPL_WIN_IOCP_IO_CONTEXT_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_HAS_IOCP)
-
-#include "asio/detail/completion_handler.hpp"
-#include "asio/detail/fenced_block.hpp"
-#include "asio/detail/handler_alloc_helpers.hpp"
-#include "asio/detail/handler_invoke_helpers.hpp"
-#include "asio/detail/memory.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-template <typename Time_Traits>
-void win_iocp_io_context::add_timer_queue(
-    timer_queue<Time_Traits>& queue)
-{
-  do_add_timer_queue(queue);
-}
-
-template <typename Time_Traits>
-void win_iocp_io_context::remove_timer_queue(
-    timer_queue<Time_Traits>& queue)
-{
-  do_remove_timer_queue(queue);
-}
-
-template <typename Time_Traits>
-void win_iocp_io_context::schedule_timer(timer_queue<Time_Traits>& queue,
-    const typename Time_Traits::time_type& time,
-    typename timer_queue<Time_Traits>::per_timer_data& timer, wait_op* op)
-{
-  // If the service has been shut down we silently discard the timer.
-  if (::InterlockedExchangeAdd(&shutdown_, 0) != 0)
-  {
-    post_immediate_completion(op, false);
-    return;
-  }
-
-  mutex::scoped_lock lock(dispatch_mutex_);
-
-  bool earliest = queue.enqueue_timer(time, timer, op);
-  work_started();
-  if (earliest)
-    update_timeout();
-}
-
-template <typename Time_Traits>
-std::size_t win_iocp_io_context::cancel_timer(timer_queue<Time_Traits>& queue,
-    typename timer_queue<Time_Traits>::per_timer_data& timer,
-    std::size_t max_cancelled)
-{
-  // If the service has been shut down we silently ignore the cancellation.
-  if (::InterlockedExchangeAdd(&shutdown_, 0) != 0)
-    return 0;
-
-  mutex::scoped_lock lock(dispatch_mutex_);
-  op_queue<win_iocp_operation> ops;
-  std::size_t n = queue.cancel_timer(timer, ops, max_cancelled);
-  post_deferred_completions(ops);
-  return n;
-}
-
-template <typename Time_Traits>
-void win_iocp_io_context::move_timer(timer_queue<Time_Traits>& queue,
-    typename timer_queue<Time_Traits>::per_timer_data& to,
-    typename timer_queue<Time_Traits>::per_timer_data& from)
-{
-  asio::detail::mutex::scoped_lock lock(dispatch_mutex_);
-  op_queue<operation> ops;
-  queue.cancel_timer(to, ops);
-  queue.move_timer(to, from);
-  lock.unlock();
-  post_deferred_completions(ops);
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_HAS_IOCP)
-
-#endif // ASIO_DETAIL_IMPL_WIN_IOCP_IO_CONTEXT_HPP
diff --git a/lib/asio/detail/impl/win_iocp_io_context.ipp b/lib/asio/detail/impl/win_iocp_io_context.ipp
deleted file mode 100644
index c371b86..0000000
--- a/lib/asio/detail/impl/win_iocp_io_context.ipp
+++ /dev/null
@@ -1,554 +0,0 @@
-//
-// detail/impl/win_iocp_io_context.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_WIN_IOCP_IO_CONTEXT_IPP
-#define ASIO_DETAIL_IMPL_WIN_IOCP_IO_CONTEXT_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_HAS_IOCP)
-
-#include "asio/error.hpp"
-#include "asio/detail/cstdint.hpp"
-#include "asio/detail/handler_alloc_helpers.hpp"
-#include "asio/detail/handler_invoke_helpers.hpp"
-#include "asio/detail/limits.hpp"
-#include "asio/detail/throw_error.hpp"
-#include "asio/detail/win_iocp_io_context.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-struct win_iocp_io_context::work_finished_on_block_exit
-{
-  ~work_finished_on_block_exit()
-  {
-    io_context_->work_finished();
-  }
-
-  win_iocp_io_context* io_context_;
-};
-
-struct win_iocp_io_context::timer_thread_function
-{
-  void operator()()
-  {
-    while (::InterlockedExchangeAdd(&io_context_->shutdown_, 0) == 0)
-    {
-      if (::WaitForSingleObject(io_context_->waitable_timer_.handle,
-            INFINITE) == WAIT_OBJECT_0)
-      {
-        ::InterlockedExchange(&io_context_->dispatch_required_, 1);
-        ::PostQueuedCompletionStatus(io_context_->iocp_.handle,
-            0, wake_for_dispatch, 0);
-      }
-    }
-  }
-
-  win_iocp_io_context* io_context_;
-};
-
-win_iocp_io_context::win_iocp_io_context(
-    asio::execution_context& ctx, int concurrency_hint)
-  : execution_context_service_base<win_iocp_io_context>(ctx),
-    iocp_(),
-    outstanding_work_(0),
-    stopped_(0),
-    stop_event_posted_(0),
-    shutdown_(0),
-    gqcs_timeout_(get_gqcs_timeout()),
-    dispatch_required_(0),
-    concurrency_hint_(concurrency_hint)
-{
-  ASIO_HANDLER_TRACKING_INIT;
-
-  iocp_.handle = ::CreateIoCompletionPort(INVALID_HANDLE_VALUE, 0, 0,
-      static_cast<DWORD>(concurrency_hint >= 0 ? concurrency_hint : DWORD(~0)));
-  if (!iocp_.handle)
-  {
-    DWORD last_error = ::GetLastError();
-    asio::error_code ec(last_error,
-        asio::error::get_system_category());
-    asio::detail::throw_error(ec, "iocp");
-  }
-}
-
-void win_iocp_io_context::shutdown()
-{
-  ::InterlockedExchange(&shutdown_, 1);
-
-  if (timer_thread_.get())
-  {
-    LARGE_INTEGER timeout;
-    timeout.QuadPart = 1;
-    ::SetWaitableTimer(waitable_timer_.handle, &timeout, 1, 0, 0, FALSE);
-  }
-
-  while (::InterlockedExchangeAdd(&outstanding_work_, 0) > 0)
-  {
-    op_queue<win_iocp_operation> ops;
-    timer_queues_.get_all_timers(ops);
-    ops.push(completed_ops_);
-    if (!ops.empty())
-    {
-      while (win_iocp_operation* op = ops.front())
-      {
-        ops.pop();
-        ::InterlockedDecrement(&outstanding_work_);
-        op->destroy();
-      }
-    }
-    else
-    {
-      DWORD bytes_transferred = 0;
-      dword_ptr_t completion_key = 0;
-      LPOVERLAPPED overlapped = 0;
-      ::GetQueuedCompletionStatus(iocp_.handle, &bytes_transferred,
-          &completion_key, &overlapped, gqcs_timeout_);
-      if (overlapped)
-      {
-        ::InterlockedDecrement(&outstanding_work_);
-        static_cast<win_iocp_operation*>(overlapped)->destroy();
-      }
-    }
-  }
-
-  if (timer_thread_.get())
-    timer_thread_->join();
-}
-
-asio::error_code win_iocp_io_context::register_handle(
-    HANDLE handle, asio::error_code& ec)
-{
-  if (::CreateIoCompletionPort(handle, iocp_.handle, 0, 0) == 0)
-  {
-    DWORD last_error = ::GetLastError();
-    ec = asio::error_code(last_error,
-        asio::error::get_system_category());
-  }
-  else
-  {
-    ec = asio::error_code();
-  }
-  return ec;
-}
-
-size_t win_iocp_io_context::run(asio::error_code& ec)
-{
-  if (::InterlockedExchangeAdd(&outstanding_work_, 0) == 0)
-  {
-    stop();
-    ec = asio::error_code();
-    return 0;
-  }
-
-  win_iocp_thread_info this_thread;
-  thread_call_stack::context ctx(this, this_thread);
-
-  size_t n = 0;
-  while (do_one(INFINITE, ec))
-    if (n != (std::numeric_limits<size_t>::max)())
-      ++n;
-  return n;
-}
-
-size_t win_iocp_io_context::run_one(asio::error_code& ec)
-{
-  if (::InterlockedExchangeAdd(&outstanding_work_, 0) == 0)
-  {
-    stop();
-    ec = asio::error_code();
-    return 0;
-  }
-
-  win_iocp_thread_info this_thread;
-  thread_call_stack::context ctx(this, this_thread);
-
-  return do_one(INFINITE, ec);
-}
-
-size_t win_iocp_io_context::wait_one(long usec, asio::error_code& ec)
-{
-  if (::InterlockedExchangeAdd(&outstanding_work_, 0) == 0)
-  {
-    stop();
-    ec = asio::error_code();
-    return 0;
-  }
-
-  win_iocp_thread_info this_thread;
-  thread_call_stack::context ctx(this, this_thread);
-
-  return do_one(usec < 0 ? INFINITE : ((usec - 1) / 1000 + 1), ec);
-}
-
-size_t win_iocp_io_context::poll(asio::error_code& ec)
-{
-  if (::InterlockedExchangeAdd(&outstanding_work_, 0) == 0)
-  {
-    stop();
-    ec = asio::error_code();
-    return 0;
-  }
-
-  win_iocp_thread_info this_thread;
-  thread_call_stack::context ctx(this, this_thread);
-
-  size_t n = 0;
-  while (do_one(0, ec))
-    if (n != (std::numeric_limits<size_t>::max)())
-      ++n;
-  return n;
-}
-
-size_t win_iocp_io_context::poll_one(asio::error_code& ec)
-{
-  if (::InterlockedExchangeAdd(&outstanding_work_, 0) == 0)
-  {
-    stop();
-    ec = asio::error_code();
-    return 0;
-  }
-
-  win_iocp_thread_info this_thread;
-  thread_call_stack::context ctx(this, this_thread);
-
-  return do_one(0, ec);
-}
-
-void win_iocp_io_context::stop()
-{
-  if (::InterlockedExchange(&stopped_, 1) == 0)
-  {
-    if (::InterlockedExchange(&stop_event_posted_, 1) == 0)
-    {
-      if (!::PostQueuedCompletionStatus(iocp_.handle, 0, 0, 0))
-      {
-        DWORD last_error = ::GetLastError();
-        asio::error_code ec(last_error,
-            asio::error::get_system_category());
-        asio::detail::throw_error(ec, "pqcs");
-      }
-    }
-  }
-}
-
-void win_iocp_io_context::post_deferred_completion(win_iocp_operation* op)
-{
-  // Flag the operation as ready.
-  op->ready_ = 1;
-
-  // Enqueue the operation on the I/O completion port.
-  if (!::PostQueuedCompletionStatus(iocp_.handle, 0, 0, op))
-  {
-    // Out of resources. Put on completed queue instead.
-    mutex::scoped_lock lock(dispatch_mutex_);
-    completed_ops_.push(op);
-    ::InterlockedExchange(&dispatch_required_, 1);
-  }
-}
-
-void win_iocp_io_context::post_deferred_completions(
-    op_queue<win_iocp_operation>& ops)
-{
-  while (win_iocp_operation* op = ops.front())
-  {
-    ops.pop();
-
-    // Flag the operation as ready.
-    op->ready_ = 1;
-
-    // Enqueue the operation on the I/O completion port.
-    if (!::PostQueuedCompletionStatus(iocp_.handle, 0, 0, op))
-    {
-      // Out of resources. Put on completed queue instead.
-      mutex::scoped_lock lock(dispatch_mutex_);
-      completed_ops_.push(op);
-      completed_ops_.push(ops);
-      ::InterlockedExchange(&dispatch_required_, 1);
-    }
-  }
-}
-
-void win_iocp_io_context::abandon_operations(
-    op_queue<win_iocp_operation>& ops)
-{
-  while (win_iocp_operation* op = ops.front())
-  {
-    ops.pop();
-    ::InterlockedDecrement(&outstanding_work_);
-    op->destroy();
-  }
-}
-
-void win_iocp_io_context::on_pending(win_iocp_operation* op)
-{
-  if (::InterlockedCompareExchange(&op->ready_, 1, 0) == 1)
-  {
-    // Enqueue the operation on the I/O completion port.
-    if (!::PostQueuedCompletionStatus(iocp_.handle,
-          0, overlapped_contains_result, op))
-    {
-      // Out of resources. Put on completed queue instead.
-      mutex::scoped_lock lock(dispatch_mutex_);
-      completed_ops_.push(op);
-      ::InterlockedExchange(&dispatch_required_, 1);
-    }
-  }
-}
-
-void win_iocp_io_context::on_completion(win_iocp_operation* op,
-    DWORD last_error, DWORD bytes_transferred)
-{
-  // Flag that the operation is ready for invocation.
-  op->ready_ = 1;
-
-  // Store results in the OVERLAPPED structure.
-  op->Internal = reinterpret_cast<ulong_ptr_t>(
-      &asio::error::get_system_category());
-  op->Offset = last_error;
-  op->OffsetHigh = bytes_transferred;
-
-  // Enqueue the operation on the I/O completion port.
-  if (!::PostQueuedCompletionStatus(iocp_.handle,
-        0, overlapped_contains_result, op))
-  {
-    // Out of resources. Put on completed queue instead.
-    mutex::scoped_lock lock(dispatch_mutex_);
-    completed_ops_.push(op);
-    ::InterlockedExchange(&dispatch_required_, 1);
-  }
-}
-
-void win_iocp_io_context::on_completion(win_iocp_operation* op,
-    const asio::error_code& ec, DWORD bytes_transferred)
-{
-  // Flag that the operation is ready for invocation.
-  op->ready_ = 1;
-
-  // Store results in the OVERLAPPED structure.
-  op->Internal = reinterpret_cast<ulong_ptr_t>(&ec.category());
-  op->Offset = ec.value();
-  op->OffsetHigh = bytes_transferred;
-
-  // Enqueue the operation on the I/O completion port.
-  if (!::PostQueuedCompletionStatus(iocp_.handle,
-        0, overlapped_contains_result, op))
-  {
-    // Out of resources. Put on completed queue instead.
-    mutex::scoped_lock lock(dispatch_mutex_);
-    completed_ops_.push(op);
-    ::InterlockedExchange(&dispatch_required_, 1);
-  }
-}
-
-size_t win_iocp_io_context::do_one(DWORD msec, asio::error_code& ec)
-{
-  for (;;)
-  {
-    // Try to acquire responsibility for dispatching timers and completed ops.
-    if (::InterlockedCompareExchange(&dispatch_required_, 0, 1) == 1)
-    {
-      mutex::scoped_lock lock(dispatch_mutex_);
-
-      // Dispatch pending timers and operations.
-      op_queue<win_iocp_operation> ops;
-      ops.push(completed_ops_);
-      timer_queues_.get_ready_timers(ops);
-      post_deferred_completions(ops);
-      update_timeout();
-    }
-
-    // Get the next operation from the queue.
-    DWORD bytes_transferred = 0;
-    dword_ptr_t completion_key = 0;
-    LPOVERLAPPED overlapped = 0;
-    ::SetLastError(0);
-    BOOL ok = ::GetQueuedCompletionStatus(iocp_.handle,
-        &bytes_transferred, &completion_key, &overlapped,
-        msec < gqcs_timeout_ ? msec : gqcs_timeout_);
-    DWORD last_error = ::GetLastError();
-
-    if (overlapped)
-    {
-      win_iocp_operation* op = static_cast<win_iocp_operation*>(overlapped);
-      asio::error_code result_ec(last_error,
-          asio::error::get_system_category());
-
-      // We may have been passed the last_error and bytes_transferred in the
-      // OVERLAPPED structure itself.
-      if (completion_key == overlapped_contains_result)
-      {
-        result_ec = asio::error_code(static_cast<int>(op->Offset),
-            *reinterpret_cast<asio::error_category*>(op->Internal));
-        bytes_transferred = op->OffsetHigh;
-      }
-
-      // Otherwise ensure any result has been saved into the OVERLAPPED
-      // structure.
-      else
-      {
-        op->Internal = reinterpret_cast<ulong_ptr_t>(&result_ec.category());
-        op->Offset = result_ec.value();
-        op->OffsetHigh = bytes_transferred;
-      }
-
-      // Dispatch the operation only if ready. The operation may not be ready
-      // if the initiating function (e.g. a call to WSARecv) has not yet
-      // returned. This is because the initiating function still wants access
-      // to the operation's OVERLAPPED structure.
-      if (::InterlockedCompareExchange(&op->ready_, 1, 0) == 1)
-      {
-        // Ensure the count of outstanding work is decremented on block exit.
-        work_finished_on_block_exit on_exit = { this };
-        (void)on_exit;
-
-        op->complete(this, result_ec, bytes_transferred);
-        ec = asio::error_code();
-        return 1;
-      }
-    }
-    else if (!ok)
-    {
-      if (last_error != WAIT_TIMEOUT)
-      {
-        ec = asio::error_code(last_error,
-            asio::error::get_system_category());
-        return 0;
-      }
-
-      // If we're waiting indefinitely we need to keep going until we get a
-      // real handler.
-      if (msec == INFINITE)
-        continue;
-
-      ec = asio::error_code();
-      return 0;
-    }
-    else if (completion_key == wake_for_dispatch)
-    {
-      // We have been woken up to try to acquire responsibility for dispatching
-      // timers and completed operations.
-    }
-    else
-    {
-      // Indicate that there is no longer an in-flight stop event.
-      ::InterlockedExchange(&stop_event_posted_, 0);
-
-      // The stopped_ flag is always checked to ensure that any leftover
-      // stop events from a previous run invocation are ignored.
-      if (::InterlockedExchangeAdd(&stopped_, 0) != 0)
-      {
-        // Wake up next thread that is blocked on GetQueuedCompletionStatus.
-        if (::InterlockedExchange(&stop_event_posted_, 1) == 0)
-        {
-          if (!::PostQueuedCompletionStatus(iocp_.handle, 0, 0, 0))
-          {
-            last_error = ::GetLastError();
-            ec = asio::error_code(last_error,
-                asio::error::get_system_category());
-            return 0;
-          }
-        }
-
-        ec = asio::error_code();
-        return 0;
-      }
-    }
-  }
-}
-
-DWORD win_iocp_io_context::get_gqcs_timeout()
-{
-  OSVERSIONINFOEX osvi;
-  ZeroMemory(&osvi, sizeof(osvi));
-  osvi.dwOSVersionInfoSize = sizeof(osvi);
-  osvi.dwMajorVersion = 6ul;
-
-  const uint64_t condition_mask = ::VerSetConditionMask(
-      0, VER_MAJORVERSION, VER_GREATER_EQUAL);
-
-  if (!!::VerifyVersionInfo(&osvi, VER_MAJORVERSION, condition_mask))
-    return INFINITE;
-
-  return default_gqcs_timeout;
-}
-
-void win_iocp_io_context::do_add_timer_queue(timer_queue_base& queue)
-{
-  mutex::scoped_lock lock(dispatch_mutex_);
-
-  timer_queues_.insert(&queue);
-
-  if (!waitable_timer_.handle)
-  {
-    waitable_timer_.handle = ::CreateWaitableTimer(0, FALSE, 0);
-    if (waitable_timer_.handle == 0)
-    {
-      DWORD last_error = ::GetLastError();
-      asio::error_code ec(last_error,
-          asio::error::get_system_category());
-      asio::detail::throw_error(ec, "timer");
-    }
-
-    LARGE_INTEGER timeout;
-    timeout.QuadPart = -max_timeout_usec;
-    timeout.QuadPart *= 10;
-    ::SetWaitableTimer(waitable_timer_.handle,
-        &timeout, max_timeout_msec, 0, 0, FALSE);
-  }
-
-  if (!timer_thread_.get())
-  {
-    timer_thread_function thread_function = { this };
-    timer_thread_.reset(new thread(thread_function, 65536));
-  }
-}
-
-void win_iocp_io_context::do_remove_timer_queue(timer_queue_base& queue)
-{
-  mutex::scoped_lock lock(dispatch_mutex_);
-
-  timer_queues_.erase(&queue);
-}
-
-void win_iocp_io_context::update_timeout()
-{
-  if (timer_thread_.get())
-  {
-    // There's no point updating the waitable timer if the new timeout period
-    // exceeds the maximum timeout. In that case, we might as well wait for the
-    // existing period of the timer to expire.
-    long timeout_usec = timer_queues_.wait_duration_usec(max_timeout_usec);
-    if (timeout_usec < max_timeout_usec)
-    {
-      LARGE_INTEGER timeout;
-      timeout.QuadPart = -timeout_usec;
-      timeout.QuadPart *= 10;
-      ::SetWaitableTimer(waitable_timer_.handle,
-          &timeout, max_timeout_msec, 0, 0, FALSE);
-    }
-  }
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_HAS_IOCP)
-
-#endif // ASIO_DETAIL_IMPL_WIN_IOCP_IO_CONTEXT_IPP
diff --git a/lib/asio/detail/impl/win_iocp_serial_port_service.ipp b/lib/asio/detail/impl/win_iocp_serial_port_service.ipp
deleted file mode 100644
index 4a9b8cd..0000000
--- a/lib/asio/detail/impl/win_iocp_serial_port_service.ipp
+++ /dev/null
@@ -1,181 +0,0 @@
-//
-// detail/impl/win_iocp_serial_port_service.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-// Copyright (c) 2008 Rep Invariant Systems, Inc. (info@repinvariant.com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_WIN_IOCP_SERIAL_PORT_SERVICE_IPP
-#define ASIO_DETAIL_IMPL_WIN_IOCP_SERIAL_PORT_SERVICE_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_HAS_IOCP) && defined(ASIO_HAS_SERIAL_PORT)
-
-#include <cstring>
-#include "asio/detail/win_iocp_serial_port_service.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-win_iocp_serial_port_service::win_iocp_serial_port_service(
-    asio::io_context& io_context)
-  : service_base<win_iocp_serial_port_service>(io_context),
-    handle_service_(io_context)
-{
-}
-
-void win_iocp_serial_port_service::shutdown()
-{
-}
-
-asio::error_code win_iocp_serial_port_service::open(
-    win_iocp_serial_port_service::implementation_type& impl,
-    const std::string& device, asio::error_code& ec)
-{
-  if (is_open(impl))
-  {
-    ec = asio::error::already_open;
-    return ec;
-  }
-
-  // For convenience, add a leading \\.\ sequence if not already present.
-  std::string name = (device[0] == '\\') ? device : "\\\\.\\" + device;
-
-  // Open a handle to the serial port.
-  ::HANDLE handle = ::CreateFileA(name.c_str(),
-      GENERIC_READ | GENERIC_WRITE, 0, 0,
-      OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
-  if (handle == INVALID_HANDLE_VALUE)
-  {
-    DWORD last_error = ::GetLastError();
-    ec = asio::error_code(last_error,
-        asio::error::get_system_category());
-    return ec;
-  }
-
-  // Determine the initial serial port parameters.
-  using namespace std; // For memset.
-  ::DCB dcb;
-  memset(&dcb, 0, sizeof(DCB));
-  dcb.DCBlength = sizeof(DCB);
-  if (!::GetCommState(handle, &dcb))
-  {
-    DWORD last_error = ::GetLastError();
-    ::CloseHandle(handle);
-    ec = asio::error_code(last_error,
-        asio::error::get_system_category());
-    return ec;
-  }
-
-  // Set some default serial port parameters. This implementation does not
-  // support changing these, so they might as well be in a known state.
-  dcb.fBinary = TRUE; // Win32 only supports binary mode.
-  dcb.fDsrSensitivity = FALSE;
-  dcb.fNull = FALSE; // Do not ignore NULL characters.
-  dcb.fAbortOnError = FALSE; // Ignore serial framing errors.
-  if (!::SetCommState(handle, &dcb))
-  {
-    DWORD last_error = ::GetLastError();
-    ::CloseHandle(handle);
-    ec = asio::error_code(last_error,
-        asio::error::get_system_category());
-    return ec;
-  }
-
-  // Set up timeouts so that the serial port will behave similarly to a
-  // network socket. Reads wait for at least one byte, then return with
-  // whatever they have. Writes return once everything is out the door.
-  ::COMMTIMEOUTS timeouts;
-  timeouts.ReadIntervalTimeout = 1;
-  timeouts.ReadTotalTimeoutMultiplier = 0;
-  timeouts.ReadTotalTimeoutConstant = 0;
-  timeouts.WriteTotalTimeoutMultiplier = 0;
-  timeouts.WriteTotalTimeoutConstant = 0;
-  if (!::SetCommTimeouts(handle, &timeouts))
-  {
-    DWORD last_error = ::GetLastError();
-    ::CloseHandle(handle);
-    ec = asio::error_code(last_error,
-        asio::error::get_system_category());
-    return ec;
-  }
-
-  // We're done. Take ownership of the serial port handle.
-  if (handle_service_.assign(impl, handle, ec))
-    ::CloseHandle(handle);
-  return ec;
-}
-
-asio::error_code win_iocp_serial_port_service::do_set_option(
-    win_iocp_serial_port_service::implementation_type& impl,
-    win_iocp_serial_port_service::store_function_type store,
-    const void* option, asio::error_code& ec)
-{
-  using namespace std; // For memcpy.
-
-  ::DCB dcb;
-  memset(&dcb, 0, sizeof(DCB));
-  dcb.DCBlength = sizeof(DCB);
-  if (!::GetCommState(handle_service_.native_handle(impl), &dcb))
-  {
-    DWORD last_error = ::GetLastError();
-    ec = asio::error_code(last_error,
-        asio::error::get_system_category());
-    return ec;
-  }
-
-  if (store(option, dcb, ec))
-    return ec;
-
-  if (!::SetCommState(handle_service_.native_handle(impl), &dcb))
-  {
-    DWORD last_error = ::GetLastError();
-    ec = asio::error_code(last_error,
-        asio::error::get_system_category());
-    return ec;
-  }
-
-  ec = asio::error_code();
-  return ec;
-}
-
-asio::error_code win_iocp_serial_port_service::do_get_option(
-    const win_iocp_serial_port_service::implementation_type& impl,
-    win_iocp_serial_port_service::load_function_type load,
-    void* option, asio::error_code& ec) const
-{
-  using namespace std; // For memset.
-
-  ::DCB dcb;
-  memset(&dcb, 0, sizeof(DCB));
-  dcb.DCBlength = sizeof(DCB);
-  if (!::GetCommState(handle_service_.native_handle(impl), &dcb))
-  {
-    DWORD last_error = ::GetLastError();
-    ec = asio::error_code(last_error,
-        asio::error::get_system_category());
-    return ec;
-  }
-
-  return load(option, dcb, ec);
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_HAS_IOCP) && defined(ASIO_HAS_SERIAL_PORT)
-
-#endif // ASIO_DETAIL_IMPL_WIN_IOCP_SERIAL_PORT_SERVICE_IPP
diff --git a/lib/asio/detail/impl/win_iocp_socket_service_base.ipp b/lib/asio/detail/impl/win_iocp_socket_service_base.ipp
deleted file mode 100644
index 6c478cd..0000000
--- a/lib/asio/detail/impl/win_iocp_socket_service_base.ipp
+++ /dev/null
@@ -1,799 +0,0 @@
-//
-// detail/impl/win_iocp_socket_service_base.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_WIN_IOCP_SOCKET_SERVICE_BASE_IPP
-#define ASIO_DETAIL_IMPL_WIN_IOCP_SOCKET_SERVICE_BASE_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_HAS_IOCP)
-
-#include "asio/detail/win_iocp_socket_service_base.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-win_iocp_socket_service_base::win_iocp_socket_service_base(
-    asio::io_context& io_context)
-  : io_context_(io_context),
-    iocp_service_(use_service<win_iocp_io_context>(io_context)),
-    reactor_(0),
-    connect_ex_(0),
-    nt_set_info_(0),
-    mutex_(),
-    impl_list_(0)
-{
-}
-
-void win_iocp_socket_service_base::base_shutdown()
-{
-  // Close all implementations, causing all operations to complete.
-  asio::detail::mutex::scoped_lock lock(mutex_);
-  base_implementation_type* impl = impl_list_;
-  while (impl)
-  {
-    close_for_destruction(*impl);
-    impl = impl->next_;
-  }
-}
-
-void win_iocp_socket_service_base::construct(
-    win_iocp_socket_service_base::base_implementation_type& impl)
-{
-  impl.socket_ = invalid_socket;
-  impl.state_ = 0;
-  impl.cancel_token_.reset();
-#if defined(ASIO_ENABLE_CANCELIO)
-  impl.safe_cancellation_thread_id_ = 0;
-#endif // defined(ASIO_ENABLE_CANCELIO)
-
-  // Insert implementation into linked list of all implementations.
-  asio::detail::mutex::scoped_lock lock(mutex_);
-  impl.next_ = impl_list_;
-  impl.prev_ = 0;
-  if (impl_list_)
-    impl_list_->prev_ = &impl;
-  impl_list_ = &impl;
-}
-
-void win_iocp_socket_service_base::base_move_construct(
-    win_iocp_socket_service_base::base_implementation_type& impl,
-    win_iocp_socket_service_base::base_implementation_type& other_impl)
-{
-  impl.socket_ = other_impl.socket_;
-  other_impl.socket_ = invalid_socket;
-
-  impl.state_ = other_impl.state_;
-  other_impl.state_ = 0;
-
-  impl.cancel_token_ = other_impl.cancel_token_;
-  other_impl.cancel_token_.reset();
-
-#if defined(ASIO_ENABLE_CANCELIO)
-  impl.safe_cancellation_thread_id_ = other_impl.safe_cancellation_thread_id_;
-  other_impl.safe_cancellation_thread_id_ = 0;
-#endif // defined(ASIO_ENABLE_CANCELIO)
-
-  // Insert implementation into linked list of all implementations.
-  asio::detail::mutex::scoped_lock lock(mutex_);
-  impl.next_ = impl_list_;
-  impl.prev_ = 0;
-  if (impl_list_)
-    impl_list_->prev_ = &impl;
-  impl_list_ = &impl;
-}
-
-void win_iocp_socket_service_base::base_move_assign(
-    win_iocp_socket_service_base::base_implementation_type& impl,
-    win_iocp_socket_service_base& other_service,
-    win_iocp_socket_service_base::base_implementation_type& other_impl)
-{
-  close_for_destruction(impl);
-
-  if (this != &other_service)
-  {
-    // Remove implementation from linked list of all implementations.
-    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;
-  }
-
-  impl.socket_ = other_impl.socket_;
-  other_impl.socket_ = invalid_socket;
-
-  impl.state_ = other_impl.state_;
-  other_impl.state_ = 0;
-
-  impl.cancel_token_ = other_impl.cancel_token_;
-  other_impl.cancel_token_.reset();
-
-#if defined(ASIO_ENABLE_CANCELIO)
-  impl.safe_cancellation_thread_id_ = other_impl.safe_cancellation_thread_id_;
-  other_impl.safe_cancellation_thread_id_ = 0;
-#endif // defined(ASIO_ENABLE_CANCELIO)
-
-  if (this != &other_service)
-  {
-    // Insert implementation into linked list of all implementations.
-    asio::detail::mutex::scoped_lock lock(other_service.mutex_);
-    impl.next_ = other_service.impl_list_;
-    impl.prev_ = 0;
-    if (other_service.impl_list_)
-      other_service.impl_list_->prev_ = &impl;
-    other_service.impl_list_ = &impl;
-  }
-}
-
-void win_iocp_socket_service_base::destroy(
-    win_iocp_socket_service_base::base_implementation_type& impl)
-{
-  close_for_destruction(impl);
-
-  // Remove implementation from linked list of all implementations.
-  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;
-}
-
-asio::error_code win_iocp_socket_service_base::close(
-    win_iocp_socket_service_base::base_implementation_type& impl,
-    asio::error_code& ec)
-{
-  if (is_open(impl))
-  {
-    ASIO_HANDLER_OPERATION((iocp_service_.context(),
-          "socket", &impl, impl.socket_, "close"));
-
-    // 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.
-    select_reactor* r = static_cast<select_reactor*>(
-          interlocked_compare_exchange_pointer(
-            reinterpret_cast<void**>(&reactor_), 0, 0));
-    if (r)
-      r->deregister_descriptor(impl.socket_, impl.reactor_data_, true);
-
-    socket_ops::close(impl.socket_, impl.state_, false, ec);
-
-    if (r)
-      r->cleanup_descriptor_data(impl.reactor_data_);
-  }
-  else
-  {
-    ec = asio::error_code();
-  }
-
-  impl.socket_ = invalid_socket;
-  impl.state_ = 0;
-  impl.cancel_token_.reset();
-#if defined(ASIO_ENABLE_CANCELIO)
-  impl.safe_cancellation_thread_id_ = 0;
-#endif // defined(ASIO_ENABLE_CANCELIO)
-
-  return ec;
-}
-
-socket_type win_iocp_socket_service_base::release(
-    win_iocp_socket_service_base::base_implementation_type& impl,
-    asio::error_code& ec)
-{
-  if (!is_open(impl))
-    return invalid_socket;
-
-  cancel(impl, ec);
-  if (ec)
-    return invalid_socket;
-
-  nt_set_info_fn fn = get_nt_set_info();
-  if (fn == 0)
-  {
-    ec = asio::error::operation_not_supported;
-    return invalid_socket;
-  }
-
-  HANDLE sock_as_handle = reinterpret_cast<HANDLE>(impl.socket_);
-  ULONG_PTR iosb[2] = { 0, 0 };
-  void* info[2] = { 0, 0 };
-  if (fn(sock_as_handle, iosb, &info, sizeof(info),
-        61 /* FileReplaceCompletionInformation */))
-  {
-    ec = asio::error::operation_not_supported;
-    return invalid_socket;
-  }
-
-  socket_type tmp = impl.socket_;
-  impl.socket_ = invalid_socket;
-  return tmp;
-}
-
-asio::error_code win_iocp_socket_service_base::cancel(
-    win_iocp_socket_service_base::base_implementation_type& impl,
-    asio::error_code& ec)
-{
-  if (!is_open(impl))
-  {
-    ec = asio::error::bad_descriptor;
-    return ec;
-  }
-
-  ASIO_HANDLER_OPERATION((iocp_service_.context(),
-        "socket", &impl, impl.socket_, "cancel"));
-
-  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 = asio::error_code();
-      }
-      else
-      {
-        ec = asio::error_code(last_error,
-            asio::error::get_system_category());
-      }
-    }
-    else
-    {
-      ec = asio::error_code();
-    }
-  }
-#if defined(ASIO_ENABLE_CANCELIO)
-  else if (impl.safe_cancellation_thread_id_ == 0)
-  {
-    // No operations have been started, so there's nothing to cancel.
-    ec = asio::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 = asio::error_code(last_error,
-          asio::error::get_system_category());
-    }
-    else
-    {
-      ec = asio::error_code();
-    }
-  }
-  else
-  {
-    // Asynchronous operations have been started from more than one thread,
-    // so cancellation is not safe.
-    ec = asio::error::operation_not_supported;
-  }
-#else // defined(ASIO_ENABLE_CANCELIO)
-  else
-  {
-    // Cancellation is not supported as CancelIo may not be used.
-    ec = asio::error::operation_not_supported;
-  }
-#endif // defined(ASIO_ENABLE_CANCELIO)
-
-  // Cancel any operations started via the reactor.
-  if (!ec)
-  {
-    select_reactor* r = static_cast<select_reactor*>(
-          interlocked_compare_exchange_pointer(
-            reinterpret_cast<void**>(&reactor_), 0, 0));
-    if (r)
-      r->cancel_ops(impl.socket_, impl.reactor_data_);
-  }
-
-  return ec;
-}
-
-asio::error_code win_iocp_socket_service_base::do_open(
-    win_iocp_socket_service_base::base_implementation_type& impl,
-    int family, int type, int protocol, asio::error_code& ec)
-{
-  if (is_open(impl))
-  {
-    ec = asio::error::already_open;
-    return ec;
-  }
-
-  socket_holder sock(socket_ops::socket(family, type, 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();
-  switch (type)
-  {
-  case SOCK_STREAM: impl.state_ = socket_ops::stream_oriented; break;
-  case SOCK_DGRAM: impl.state_ = socket_ops::datagram_oriented; break;
-  default: impl.state_ = 0; break;
-  }
-  impl.cancel_token_.reset(static_cast<void*>(0), socket_ops::noop_deleter());
-  ec = asio::error_code();
-  return ec;
-}
-
-asio::error_code win_iocp_socket_service_base::do_assign(
-    win_iocp_socket_service_base::base_implementation_type& impl,
-    int type, socket_type native_socket, asio::error_code& ec)
-{
-  if (is_open(impl))
-  {
-    ec = asio::error::already_open;
-    return ec;
-  }
-
-  HANDLE sock_as_handle = reinterpret_cast<HANDLE>(native_socket);
-  if (iocp_service_.register_handle(sock_as_handle, ec))
-    return ec;
-
-  impl.socket_ = native_socket;
-  switch (type)
-  {
-  case SOCK_STREAM: impl.state_ = socket_ops::stream_oriented; break;
-  case SOCK_DGRAM: impl.state_ = socket_ops::datagram_oriented; break;
-  default: impl.state_ = 0; break;
-  }
-  impl.cancel_token_.reset(static_cast<void*>(0), socket_ops::noop_deleter());
-  ec = asio::error_code();
-  return ec;
-}
-
-void win_iocp_socket_service_base::start_send_op(
-    win_iocp_socket_service_base::base_implementation_type& impl,
-    WSABUF* buffers, std::size_t buffer_count,
-    socket_base::message_flags flags, bool noop, operation* op)
-{
-  update_cancellation_thread_id(impl);
-  iocp_service_.work_started();
-
-  if (noop)
-    iocp_service_.on_completion(op);
-  else if (!is_open(impl))
-    iocp_service_.on_completion(op, asio::error::bad_descriptor);
-  else
-  {
-    DWORD bytes_transferred = 0;
-    int result = ::WSASend(impl.socket_, buffers,
-        static_cast<DWORD>(buffer_count), &bytes_transferred, flags, op, 0);
-    DWORD last_error = ::WSAGetLastError();
-    if (last_error == ERROR_PORT_UNREACHABLE)
-      last_error = WSAECONNREFUSED;
-    if (result != 0 && last_error != WSA_IO_PENDING)
-      iocp_service_.on_completion(op, last_error, bytes_transferred);
-    else
-      iocp_service_.on_pending(op);
-  }
-}
-
-void win_iocp_socket_service_base::start_send_to_op(
-    win_iocp_socket_service_base::base_implementation_type& impl,
-    WSABUF* buffers, std::size_t buffer_count,
-    const socket_addr_type* addr, int addrlen,
-    socket_base::message_flags flags, operation* op)
-{
-  update_cancellation_thread_id(impl);
-  iocp_service_.work_started();
-
-  if (!is_open(impl))
-    iocp_service_.on_completion(op, asio::error::bad_descriptor);
-  else
-  {
-    DWORD bytes_transferred = 0;
-    int result = ::WSASendTo(impl.socket_, buffers,
-        static_cast<DWORD>(buffer_count),
-        &bytes_transferred, flags, addr, addrlen, op, 0);
-    DWORD last_error = ::WSAGetLastError();
-    if (last_error == ERROR_PORT_UNREACHABLE)
-      last_error = WSAECONNREFUSED;
-    if (result != 0 && last_error != WSA_IO_PENDING)
-      iocp_service_.on_completion(op, last_error, bytes_transferred);
-    else
-      iocp_service_.on_pending(op);
-  }
-}
-
-void win_iocp_socket_service_base::start_receive_op(
-    win_iocp_socket_service_base::base_implementation_type& impl,
-    WSABUF* buffers, std::size_t buffer_count,
-    socket_base::message_flags flags, bool noop, operation* op)
-{
-  update_cancellation_thread_id(impl);
-  iocp_service_.work_started();
-
-  if (noop)
-    iocp_service_.on_completion(op);
-  else if (!is_open(impl))
-    iocp_service_.on_completion(op, asio::error::bad_descriptor);
-  else
-  {
-    DWORD bytes_transferred = 0;
-    DWORD recv_flags = flags;
-    int result = ::WSARecv(impl.socket_, buffers,
-        static_cast<DWORD>(buffer_count),
-        &bytes_transferred, &recv_flags, op, 0);
-    DWORD last_error = ::WSAGetLastError();
-    if (last_error == ERROR_NETNAME_DELETED)
-      last_error = WSAECONNRESET;
-    else if (last_error == ERROR_PORT_UNREACHABLE)
-      last_error = WSAECONNREFUSED;
-    if (result != 0 && last_error != WSA_IO_PENDING)
-      iocp_service_.on_completion(op, last_error, bytes_transferred);
-    else
-      iocp_service_.on_pending(op);
-  }
-}
-
-void win_iocp_socket_service_base::start_null_buffers_receive_op(
-    win_iocp_socket_service_base::base_implementation_type& impl,
-    socket_base::message_flags flags, reactor_op* op)
-{
-  if ((impl.state_ & socket_ops::stream_oriented) != 0)
-  {
-    // For stream sockets on Windows, we may issue a 0-byte overlapped
-    // WSARecv to wait until there is data available on the socket.
-    ::WSABUF buf = { 0, 0 };
-    start_receive_op(impl, &buf, 1, flags, false, op);
-  }
-  else
-  {
-    start_reactor_op(impl,
-        (flags & socket_base::message_out_of_band)
-          ? select_reactor::except_op : select_reactor::read_op,
-        op);
-  }
-}
-
-void win_iocp_socket_service_base::start_receive_from_op(
-    win_iocp_socket_service_base::base_implementation_type& impl,
-    WSABUF* buffers, std::size_t buffer_count, socket_addr_type* addr,
-    socket_base::message_flags flags, int* addrlen, operation* op)
-{
-  update_cancellation_thread_id(impl);
-  iocp_service_.work_started();
-
-  if (!is_open(impl))
-    iocp_service_.on_completion(op, asio::error::bad_descriptor);
-  else
-  {
-    DWORD bytes_transferred = 0;
-    DWORD recv_flags = flags;
-    int result = ::WSARecvFrom(impl.socket_, buffers,
-        static_cast<DWORD>(buffer_count),
-        &bytes_transferred, &recv_flags, addr, addrlen, op, 0);
-    DWORD last_error = ::WSAGetLastError();
-    if (last_error == ERROR_PORT_UNREACHABLE)
-      last_error = WSAECONNREFUSED;
-    if (result != 0 && last_error != WSA_IO_PENDING)
-      iocp_service_.on_completion(op, last_error, bytes_transferred);
-    else
-      iocp_service_.on_pending(op);
-  }
-}
-
-void win_iocp_socket_service_base::start_accept_op(
-    win_iocp_socket_service_base::base_implementation_type& impl,
-    bool peer_is_open, socket_holder& new_socket, int family, int type,
-    int protocol, void* output_buffer, DWORD address_length, operation* op)
-{
-  update_cancellation_thread_id(impl);
-  iocp_service_.work_started();
-
-  if (!is_open(impl))
-    iocp_service_.on_completion(op, asio::error::bad_descriptor);
-  else if (peer_is_open)
-    iocp_service_.on_completion(op, asio::error::already_open);
-  else
-  {
-    asio::error_code ec;
-    new_socket.reset(socket_ops::socket(family, type, protocol, ec));
-    if (new_socket.get() == invalid_socket)
-      iocp_service_.on_completion(op, ec);
-    else
-    {
-      DWORD bytes_read = 0;
-      BOOL result = ::AcceptEx(impl.socket_, new_socket.get(), output_buffer,
-          0, address_length, address_length, &bytes_read, op);
-      DWORD last_error = ::WSAGetLastError();
-      if (!result && last_error != WSA_IO_PENDING)
-        iocp_service_.on_completion(op, last_error);
-      else
-        iocp_service_.on_pending(op);
-    }
-  }
-}
-
-void win_iocp_socket_service_base::restart_accept_op(
-    socket_type s, socket_holder& new_socket, int family, int type,
-    int protocol, void* output_buffer, DWORD address_length, operation* op)
-{
-  new_socket.reset();
-  iocp_service_.work_started();
-
-  asio::error_code ec;
-  new_socket.reset(socket_ops::socket(family, type, protocol, ec));
-  if (new_socket.get() == invalid_socket)
-    iocp_service_.on_completion(op, ec);
-  else
-  {
-    DWORD bytes_read = 0;
-    BOOL result = ::AcceptEx(s, new_socket.get(), output_buffer,
-        0, address_length, address_length, &bytes_read, op);
-    DWORD last_error = ::WSAGetLastError();
-    if (!result && last_error != WSA_IO_PENDING)
-      iocp_service_.on_completion(op, last_error);
-    else
-      iocp_service_.on_pending(op);
-  }
-}
-
-void win_iocp_socket_service_base::start_reactor_op(
-    win_iocp_socket_service_base::base_implementation_type& impl,
-    int op_type, reactor_op* op)
-{
-  select_reactor& r = get_reactor();
-  update_cancellation_thread_id(impl);
-
-  if (is_open(impl))
-  {
-    r.start_op(op_type, impl.socket_, impl.reactor_data_, op, false, false);
-    return;
-  }
-  else
-    op->ec_ = asio::error::bad_descriptor;
-
-  iocp_service_.post_immediate_completion(op, false);
-}
-
-void win_iocp_socket_service_base::start_connect_op(
-    win_iocp_socket_service_base::base_implementation_type& impl,
-    int family, int type, const socket_addr_type* addr,
-    std::size_t addrlen, win_iocp_socket_connect_op_base* op)
-{
-  // If ConnectEx is available, use that.
-  if (family == ASIO_OS_DEF(AF_INET)
-      || family == ASIO_OS_DEF(AF_INET6))
-  {
-    if (connect_ex_fn connect_ex = get_connect_ex(impl, type))
-    {
-      union address_union
-      {
-        socket_addr_type base;
-        sockaddr_in4_type v4;
-        sockaddr_in6_type v6;
-      } a;
-
-      using namespace std; // For memset.
-      memset(&a, 0, sizeof(a));
-      a.base.sa_family = family;
-
-      socket_ops::bind(impl.socket_, &a.base,
-          family == ASIO_OS_DEF(AF_INET)
-          ? sizeof(a.v4) : sizeof(a.v6), op->ec_);
-      if (op->ec_ && op->ec_ != asio::error::invalid_argument)
-      {
-        iocp_service_.post_immediate_completion(op, false);
-        return;
-      }
-
-      op->connect_ex_ = true;
-      update_cancellation_thread_id(impl);
-      iocp_service_.work_started();
-
-      BOOL result = connect_ex(impl.socket_,
-          addr, static_cast<int>(addrlen), 0, 0, 0, op);
-      DWORD last_error = ::WSAGetLastError();
-      if (!result && last_error != WSA_IO_PENDING)
-        iocp_service_.on_completion(op, last_error);
-      else
-        iocp_service_.on_pending(op);
-      return;
-    }
-  }
-
-  // Otherwise, fall back to a reactor-based implementation.
-  select_reactor& r = get_reactor();
-  update_cancellation_thread_id(impl);
-
-  if ((impl.state_ & socket_ops::non_blocking) != 0
-      || socket_ops::set_internal_non_blocking(
-        impl.socket_, impl.state_, true, op->ec_))
-  {
-    if (socket_ops::connect(impl.socket_, addr, addrlen, op->ec_) != 0)
-    {
-      if (op->ec_ == asio::error::in_progress
-          || op->ec_ == asio::error::would_block)
-      {
-        op->ec_ = asio::error_code();
-        r.start_op(select_reactor::connect_op, impl.socket_,
-            impl.reactor_data_, op, false, false);
-        return;
-      }
-    }
-  }
-
-  r.post_immediate_completion(op, false);
-}
-
-void win_iocp_socket_service_base::close_for_destruction(
-    win_iocp_socket_service_base::base_implementation_type& impl)
-{
-  if (is_open(impl))
-  {
-    ASIO_HANDLER_OPERATION((iocp_service_.context(),
-          "socket", &impl, impl.socket_, "close"));
-
-    // 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.
-    select_reactor* r = static_cast<select_reactor*>(
-          interlocked_compare_exchange_pointer(
-            reinterpret_cast<void**>(&reactor_), 0, 0));
-    if (r)
-      r->deregister_descriptor(impl.socket_, impl.reactor_data_, true);
-
-    asio::error_code ignored_ec;
-    socket_ops::close(impl.socket_, impl.state_, true, ignored_ec);
-
-    if (r)
-      r->cleanup_descriptor_data(impl.reactor_data_);
-  }
-
-  impl.socket_ = invalid_socket;
-  impl.state_ = 0;
-  impl.cancel_token_.reset();
-#if defined(ASIO_ENABLE_CANCELIO)
-  impl.safe_cancellation_thread_id_ = 0;
-#endif // defined(ASIO_ENABLE_CANCELIO)
-}
-
-void win_iocp_socket_service_base::update_cancellation_thread_id(
-    win_iocp_socket_service_base::base_implementation_type& impl)
-{
-#if defined(ASIO_ENABLE_CANCELIO)
-  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);
-#else // defined(ASIO_ENABLE_CANCELIO)
-  (void)impl;
-#endif // defined(ASIO_ENABLE_CANCELIO)
-}
-
-select_reactor& win_iocp_socket_service_base::get_reactor()
-{
-  select_reactor* r = static_cast<select_reactor*>(
-        interlocked_compare_exchange_pointer(
-          reinterpret_cast<void**>(&reactor_), 0, 0));
-  if (!r)
-  {
-    r = &(use_service<select_reactor>(io_context_));
-    interlocked_exchange_pointer(reinterpret_cast<void**>(&reactor_), r);
-  }
-  return *r;
-}
-
-win_iocp_socket_service_base::connect_ex_fn
-win_iocp_socket_service_base::get_connect_ex(
-    win_iocp_socket_service_base::base_implementation_type& impl, int type)
-{
-#if defined(ASIO_DISABLE_CONNECTEX)
-  (void)impl;
-  (void)type;
-  return 0;
-#else // defined(ASIO_DISABLE_CONNECTEX)
-  if (type != ASIO_OS_DEF(SOCK_STREAM)
-      && type != ASIO_OS_DEF(SOCK_SEQPACKET))
-    return 0;
-
-  void* ptr = interlocked_compare_exchange_pointer(&connect_ex_, 0, 0);
-  if (!ptr)
-  {
-    GUID guid = { 0x25a207b9, 0xddf3, 0x4660,
-      { 0x8e, 0xe9, 0x76, 0xe5, 0x8c, 0x74, 0x06, 0x3e } };
-
-    DWORD bytes = 0;
-    if (::WSAIoctl(impl.socket_, SIO_GET_EXTENSION_FUNCTION_POINTER,
-          &guid, sizeof(guid), &ptr, sizeof(ptr), &bytes, 0, 0) != 0)
-    {
-      // Set connect_ex_ to a special value to indicate that ConnectEx is
-      // unavailable. That way we won't bother trying to look it up again.
-      ptr = this;
-    }
-
-    interlocked_exchange_pointer(&connect_ex_, ptr);
-  }
-
-  return reinterpret_cast<connect_ex_fn>(ptr == this ? 0 : ptr);
-#endif // defined(ASIO_DISABLE_CONNECTEX)
-}
-
-win_iocp_socket_service_base::nt_set_info_fn
-win_iocp_socket_service_base::get_nt_set_info()
-{
-  void* ptr = interlocked_compare_exchange_pointer(&nt_set_info_, 0, 0);
-  if (!ptr)
-  {
-    if (HMODULE h = ::GetModuleHandleA("NTDLL.DLL"))
-      ptr = reinterpret_cast<void*>(GetProcAddress(h, "NtSetInformationFile"));
-
-    // On failure, set nt_set_info_ to a special value to indicate that the
-    // NtSetInformationFile function is unavailable. That way we won't bother
-    // trying to look it up again.
-    interlocked_exchange_pointer(&nt_set_info_, ptr ? ptr : this);
-  }
-
-  return reinterpret_cast<nt_set_info_fn>(ptr == this ? 0 : ptr);
-}
-
-void* win_iocp_socket_service_base::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
-}
-
-void* win_iocp_socket_service_base::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
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_HAS_IOCP)
-
-#endif // ASIO_DETAIL_IMPL_WIN_IOCP_SOCKET_SERVICE_BASE_IPP
diff --git a/lib/asio/detail/impl/win_mutex.ipp b/lib/asio/detail/impl/win_mutex.ipp
deleted file mode 100644
index dc58a12..0000000
--- a/lib/asio/detail/impl/win_mutex.ipp
+++ /dev/null
@@ -1,84 +0,0 @@
-//
-// detail/impl/win_mutex.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_WIN_MUTEX_IPP
-#define ASIO_DETAIL_IMPL_WIN_MUTEX_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_WINDOWS)
-
-#include "asio/detail/throw_error.hpp"
-#include "asio/detail/win_mutex.hpp"
-#include "asio/error.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-win_mutex::win_mutex()
-{
-  int error = do_init();
-  asio::error_code ec(error,
-      asio::error::get_system_category());
-  asio::detail::throw_error(ec, "mutex");
-}
-
-int win_mutex::do_init()
-{
-#if defined(__MINGW32__)
-  // Not sure if MinGW supports structured exception handling, so for now
-  // we'll just call the Windows API and hope.
-# if defined(UNDER_CE)
-  ::InitializeCriticalSection(&crit_section_);
-# elif defined(ASIO_WINDOWS_APP)
-  if (!::InitializeCriticalSectionEx(&crit_section_, 0, 0))
-    return ::GetLastError();
-# else
-  if (!::InitializeCriticalSectionAndSpinCount(&crit_section_, 0x80000000))
-    return ::GetLastError();
-# endif
-  return 0;
-#else
-  __try
-  {
-# if defined(UNDER_CE)
-    ::InitializeCriticalSection(&crit_section_);
-# elif defined(ASIO_WINDOWS_APP)
-    if (!::InitializeCriticalSectionEx(&crit_section_, 0, 0))
-      return ::GetLastError();
-# else
-    if (!::InitializeCriticalSectionAndSpinCount(&crit_section_, 0x80000000))
-      return ::GetLastError();
-# endif
-  }
-  __except(GetExceptionCode() == STATUS_NO_MEMORY
-      ? EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH)
-  {
-    return ERROR_OUTOFMEMORY;
-  }
-
-  return 0;
-#endif
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_WINDOWS)
-
-#endif // ASIO_DETAIL_IMPL_WIN_MUTEX_IPP
diff --git a/lib/asio/detail/impl/win_object_handle_service.ipp b/lib/asio/detail/impl/win_object_handle_service.ipp
deleted file mode 100644
index c5e59d1..0000000
--- a/lib/asio/detail/impl/win_object_handle_service.ipp
+++ /dev/null
@@ -1,449 +0,0 @@
-//
-// detail/impl/win_object_handle_service.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-// Copyright (c) 2011 Boris Schaeling (boris@highscore.de)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_WIN_OBJECT_HANDLE_SERVICE_IPP
-#define ASIO_DETAIL_IMPL_WIN_OBJECT_HANDLE_SERVICE_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_HAS_WINDOWS_OBJECT_HANDLE)
-
-#include "asio/detail/win_object_handle_service.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-win_object_handle_service::win_object_handle_service(
-    asio::io_context& io_context)
-  : service_base<win_object_handle_service>(io_context),
-    io_context_(asio::use_service<io_context_impl>(io_context)),
-    mutex_(),
-    impl_list_(0),
-    shutdown_(false)
-{
-}
-
-void win_object_handle_service::shutdown()
-{
-  mutex::scoped_lock lock(mutex_);
-
-  // Setting this flag to true prevents new objects from being registered, and
-  // new asynchronous wait operations from being started. We only need to worry
-  // about cleaning up the operations that are currently in progress.
-  shutdown_ = true;
-
-  op_queue<operation> ops;
-  for (implementation_type* impl = impl_list_; impl; impl = impl->next_)
-    ops.push(impl->op_queue_);
-
-  lock.unlock();
-
-  io_context_.abandon_operations(ops);
-}
-
-void win_object_handle_service::construct(
-    win_object_handle_service::implementation_type& impl)
-{
-  impl.handle_ = INVALID_HANDLE_VALUE;
-  impl.wait_handle_ = INVALID_HANDLE_VALUE;
-  impl.owner_ = this;
-
-  // Insert implementation into linked list of all implementations.
-  mutex::scoped_lock lock(mutex_);
-  if (!shutdown_)
-  {
-    impl.next_ = impl_list_;
-    impl.prev_ = 0;
-    if (impl_list_)
-      impl_list_->prev_ = &impl;
-    impl_list_ = &impl;
-  }
-}
-
-void win_object_handle_service::move_construct(
-    win_object_handle_service::implementation_type& impl,
-    win_object_handle_service::implementation_type& other_impl)
-{
-  mutex::scoped_lock lock(mutex_);
-
-  // Insert implementation into linked list of all implementations.
-  if (!shutdown_)
-  {
-    impl.next_ = impl_list_;
-    impl.prev_ = 0;
-    if (impl_list_)
-      impl_list_->prev_ = &impl;
-    impl_list_ = &impl;
-  }
-
-  impl.handle_ = other_impl.handle_;
-  other_impl.handle_ = INVALID_HANDLE_VALUE;
-  impl.wait_handle_ = other_impl.wait_handle_;
-  other_impl.wait_handle_ = INVALID_HANDLE_VALUE;
-  impl.op_queue_.push(other_impl.op_queue_);
-  impl.owner_ = this;
-
-  // We must not hold the lock while calling UnregisterWaitEx. This is because
-  // the registered callback function might be invoked while we are waiting for
-  // UnregisterWaitEx to complete.
-  lock.unlock();
-
-  if (impl.wait_handle_ != INVALID_HANDLE_VALUE)
-    ::UnregisterWaitEx(impl.wait_handle_, INVALID_HANDLE_VALUE);
-
-  if (!impl.op_queue_.empty())
-    register_wait_callback(impl, lock);
-}
-
-void win_object_handle_service::move_assign(
-    win_object_handle_service::implementation_type& impl,
-    win_object_handle_service& other_service,
-    win_object_handle_service::implementation_type& other_impl)
-{
-  asio::error_code ignored_ec;
-  close(impl, ignored_ec);
-
-  mutex::scoped_lock lock(mutex_);
-
-  if (this != &other_service)
-  {
-    // Remove implementation from linked list of all implementations.
-    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;
-  }
-
-  impl.handle_ = other_impl.handle_;
-  other_impl.handle_ = INVALID_HANDLE_VALUE;
-  impl.wait_handle_ = other_impl.wait_handle_;
-  other_impl.wait_handle_ = INVALID_HANDLE_VALUE;
-  impl.op_queue_.push(other_impl.op_queue_);
-  impl.owner_ = this;
-
-  if (this != &other_service)
-  {
-    // Insert implementation into linked list of all implementations.
-    impl.next_ = other_service.impl_list_;
-    impl.prev_ = 0;
-    if (other_service.impl_list_)
-      other_service.impl_list_->prev_ = &impl;
-    other_service.impl_list_ = &impl;
-  }
-
-  // We must not hold the lock while calling UnregisterWaitEx. This is because
-  // the registered callback function might be invoked while we are waiting for
-  // UnregisterWaitEx to complete.
-  lock.unlock();
-
-  if (impl.wait_handle_ != INVALID_HANDLE_VALUE)
-    ::UnregisterWaitEx(impl.wait_handle_, INVALID_HANDLE_VALUE);
-
-  if (!impl.op_queue_.empty())
-    register_wait_callback(impl, lock);
-}
-
-void win_object_handle_service::destroy(
-    win_object_handle_service::implementation_type& impl)
-{
-  mutex::scoped_lock lock(mutex_);
-
-  // Remove implementation from linked list of all implementations.
-  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;
-
-  if (is_open(impl))
-  {
-    ASIO_HANDLER_OPERATION((io_context_.context(), "object_handle",
-          &impl, reinterpret_cast<uintmax_t>(impl.wait_handle_), "close"));
-
-    HANDLE wait_handle = impl.wait_handle_;
-    impl.wait_handle_ = INVALID_HANDLE_VALUE;
-
-    op_queue<operation> ops;
-    while (wait_op* op = impl.op_queue_.front())
-    {
-      op->ec_ = asio::error::operation_aborted;
-      impl.op_queue_.pop();
-      ops.push(op);
-    }
-
-    // We must not hold the lock while calling UnregisterWaitEx. This is
-    // because the registered callback function might be invoked while we are
-    // waiting for UnregisterWaitEx to complete.
-    lock.unlock();
-
-    if (wait_handle != INVALID_HANDLE_VALUE)
-      ::UnregisterWaitEx(wait_handle, INVALID_HANDLE_VALUE);
-
-    ::CloseHandle(impl.handle_);
-    impl.handle_ = INVALID_HANDLE_VALUE;
-
-    io_context_.post_deferred_completions(ops);
-  }
-}
-
-asio::error_code win_object_handle_service::assign(
-    win_object_handle_service::implementation_type& impl,
-    const native_handle_type& handle, asio::error_code& ec)
-{
-  if (is_open(impl))
-  {
-    ec = asio::error::already_open;
-    return ec;
-  }
-
-  impl.handle_ = handle;
-  ec = asio::error_code();
-  return ec;
-}
-
-asio::error_code win_object_handle_service::close(
-    win_object_handle_service::implementation_type& impl,
-    asio::error_code& ec)
-{
-  if (is_open(impl))
-  {
-    ASIO_HANDLER_OPERATION((io_context_.context(), "object_handle",
-          &impl, reinterpret_cast<uintmax_t>(impl.wait_handle_), "close"));
-
-    mutex::scoped_lock lock(mutex_);
-
-    HANDLE wait_handle = impl.wait_handle_;
-    impl.wait_handle_ = INVALID_HANDLE_VALUE;
-
-    op_queue<operation> completed_ops;
-    while (wait_op* op = impl.op_queue_.front())
-    {
-      impl.op_queue_.pop();
-      op->ec_ = asio::error::operation_aborted;
-      completed_ops.push(op);
-    }
-
-    // We must not hold the lock while calling UnregisterWaitEx. This is
-    // because the registered callback function might be invoked while we are
-    // waiting for UnregisterWaitEx to complete.
-    lock.unlock();
-
-    if (wait_handle != INVALID_HANDLE_VALUE)
-      ::UnregisterWaitEx(wait_handle, INVALID_HANDLE_VALUE);
-
-    if (::CloseHandle(impl.handle_))
-    {
-      impl.handle_ = INVALID_HANDLE_VALUE;
-      ec = asio::error_code();
-    }
-    else
-    {
-      DWORD last_error = ::GetLastError();
-      ec = asio::error_code(last_error,
-          asio::error::get_system_category());
-    }
-
-    io_context_.post_deferred_completions(completed_ops);
-  }
-  else
-  {
-    ec = asio::error_code();
-  }
-
-  return ec;
-}
-
-asio::error_code win_object_handle_service::cancel(
-    win_object_handle_service::implementation_type& impl,
-    asio::error_code& ec)
-{
-  if (is_open(impl))
-  {
-    ASIO_HANDLER_OPERATION((io_context_.context(), "object_handle",
-          &impl, reinterpret_cast<uintmax_t>(impl.wait_handle_), "cancel"));
-
-    mutex::scoped_lock lock(mutex_);
-
-    HANDLE wait_handle = impl.wait_handle_;
-    impl.wait_handle_ = INVALID_HANDLE_VALUE;
-
-    op_queue<operation> completed_ops;
-    while (wait_op* op = impl.op_queue_.front())
-    {
-      op->ec_ = asio::error::operation_aborted;
-      impl.op_queue_.pop();
-      completed_ops.push(op);
-    }
-
-    // We must not hold the lock while calling UnregisterWaitEx. This is
-    // because the registered callback function might be invoked while we are
-    // waiting for UnregisterWaitEx to complete.
-    lock.unlock();
-
-    if (wait_handle != INVALID_HANDLE_VALUE)
-      ::UnregisterWaitEx(wait_handle, INVALID_HANDLE_VALUE);
-
-    ec = asio::error_code();
-
-    io_context_.post_deferred_completions(completed_ops);
-  }
-  else
-  {
-    ec = asio::error::bad_descriptor;
-  }
-
-  return ec;
-}
-
-void win_object_handle_service::wait(
-    win_object_handle_service::implementation_type& impl,
-    asio::error_code& ec)
-{
-  switch (::WaitForSingleObject(impl.handle_, INFINITE))
-  {
-  case WAIT_FAILED:
-    {
-      DWORD last_error = ::GetLastError();
-      ec = asio::error_code(last_error,
-          asio::error::get_system_category());
-      break;
-    }
-  case WAIT_OBJECT_0:
-  case WAIT_ABANDONED:
-  default:
-    ec = asio::error_code();
-    break;
-  }
-}
-
-void win_object_handle_service::start_wait_op(
-    win_object_handle_service::implementation_type& impl, wait_op* op)
-{
-  io_context_.work_started();
-
-  if (is_open(impl))
-  {
-    mutex::scoped_lock lock(mutex_);
-
-    if (!shutdown_)
-    {
-      impl.op_queue_.push(op);
-
-      // Only the first operation to be queued gets to register a wait callback.
-      // Subsequent operations have to wait for the first to finish.
-      if (impl.op_queue_.front() == op)
-        register_wait_callback(impl, lock);
-    }
-    else
-    {
-      lock.unlock();
-      io_context_.post_deferred_completion(op);
-    }
-  }
-  else
-  {
-    op->ec_ = asio::error::bad_descriptor;
-    io_context_.post_deferred_completion(op);
-  }
-}
-
-void win_object_handle_service::register_wait_callback(
-    win_object_handle_service::implementation_type& impl,
-    mutex::scoped_lock& lock)
-{
-  lock.lock();
-
-  if (!RegisterWaitForSingleObject(&impl.wait_handle_,
-        impl.handle_, &win_object_handle_service::wait_callback,
-        &impl, INFINITE, WT_EXECUTEONLYONCE))
-  {
-    DWORD last_error = ::GetLastError();
-    asio::error_code ec(last_error,
-        asio::error::get_system_category());
-
-    op_queue<operation> completed_ops;
-    while (wait_op* op = impl.op_queue_.front())
-    {
-      op->ec_ = ec;
-      impl.op_queue_.pop();
-      completed_ops.push(op);
-    }
-
-    lock.unlock();
-    io_context_.post_deferred_completions(completed_ops);
-  }
-}
-
-void win_object_handle_service::wait_callback(PVOID param, BOOLEAN)
-{
-  implementation_type* impl = static_cast<implementation_type*>(param);
-  mutex::scoped_lock lock(impl->owner_->mutex_);
-
-  if (impl->wait_handle_ != INVALID_HANDLE_VALUE)
-  {
-    ::UnregisterWaitEx(impl->wait_handle_, NULL);
-    impl->wait_handle_ = INVALID_HANDLE_VALUE;
-  }
-
-  if (wait_op* op = impl->op_queue_.front())
-  {
-    op_queue<operation> completed_ops;
-
-    op->ec_ = asio::error_code();
-    impl->op_queue_.pop();
-    completed_ops.push(op);
-
-    if (!impl->op_queue_.empty())
-    {
-      if (!RegisterWaitForSingleObject(&impl->wait_handle_,
-            impl->handle_, &win_object_handle_service::wait_callback,
-            param, INFINITE, WT_EXECUTEONLYONCE))
-      {
-        DWORD last_error = ::GetLastError();
-        asio::error_code ec(last_error,
-            asio::error::get_system_category());
-
-        while ((op = impl->op_queue_.front()) != 0)
-        {
-          op->ec_ = ec;
-          impl->op_queue_.pop();
-          completed_ops.push(op);
-        }
-      }
-    }
-
-    io_context_impl& ioc = impl->owner_->io_context_;
-    lock.unlock();
-    ioc.post_deferred_completions(completed_ops);
-  }
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_HAS_WINDOWS_OBJECT_HANDLE)
-
-#endif // ASIO_DETAIL_IMPL_WIN_OBJECT_HANDLE_SERVICE_IPP
diff --git a/lib/asio/detail/impl/win_static_mutex.ipp b/lib/asio/detail/impl/win_static_mutex.ipp
deleted file mode 100644
index 42089bd..0000000
--- a/lib/asio/detail/impl/win_static_mutex.ipp
+++ /dev/null
@@ -1,136 +0,0 @@
-//
-// detail/impl/win_static_mutex.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_WIN_STATIC_MUTEX_IPP
-#define ASIO_DETAIL_IMPL_WIN_STATIC_MUTEX_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_WINDOWS)
-
-#include <cstdio>
-#include "asio/detail/throw_error.hpp"
-#include "asio/detail/win_static_mutex.hpp"
-#include "asio/error.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-void win_static_mutex::init()
-{
-  int error = do_init();
-  asio::error_code ec(error,
-      asio::error::get_system_category());
-  asio::detail::throw_error(ec, "static_mutex");
-}
-
-int win_static_mutex::do_init()
-{
-  using namespace std; // For sprintf.
-  wchar_t mutex_name[128];
-#if defined(ASIO_HAS_SECURE_RTL)
-  swprintf_s(
-#else // defined(ASIO_HAS_SECURE_RTL)
-  _snwprintf(
-#endif // defined(ASIO_HAS_SECURE_RTL)
-      mutex_name, 128, L"asio-58CCDC44-6264-4842-90C2-F3C545CB8AA7-%u-%p",
-      static_cast<unsigned int>(::GetCurrentProcessId()), this);
-
-#if defined(ASIO_WINDOWS_APP)
-  HANDLE mutex = ::CreateMutexExW(0, mutex_name, CREATE_MUTEX_INITIAL_OWNER, 0);
-#else // defined(ASIO_WINDOWS_APP)
-  HANDLE mutex = ::CreateMutexW(0, TRUE, mutex_name);
-#endif // defined(ASIO_WINDOWS_APP)
-  DWORD last_error = ::GetLastError();
-  if (mutex == 0)
-    return ::GetLastError();
-
-  if (last_error == ERROR_ALREADY_EXISTS)
-  {
-#if defined(ASIO_WINDOWS_APP)
-    ::WaitForSingleObjectEx(mutex, INFINITE, false);
-#else // defined(ASIO_WINDOWS_APP)
-    ::WaitForSingleObject(mutex, INFINITE);
-#endif // defined(ASIO_WINDOWS_APP)
-  }
-
-  if (initialised_)
-  {
-    ::ReleaseMutex(mutex);
-    ::CloseHandle(mutex);
-    return 0;
-  }
-
-#if defined(__MINGW32__)
-  // Not sure if MinGW supports structured exception handling, so for now
-  // we'll just call the Windows API and hope.
-# if defined(UNDER_CE)
-  ::InitializeCriticalSection(&crit_section_);
-# else
-  if (!::InitializeCriticalSectionAndSpinCount(&crit_section_, 0x80000000))
-  {
-    last_error = ::GetLastError();
-    ::ReleaseMutex(mutex);
-    ::CloseHandle(mutex);
-    return last_error;
-  }
-# endif
-#else
-  __try
-  {
-# if defined(UNDER_CE)
-    ::InitializeCriticalSection(&crit_section_);
-# elif defined(ASIO_WINDOWS_APP)
-    if (!::InitializeCriticalSectionEx(&crit_section_, 0, 0))
-    {
-      last_error = ::GetLastError();
-      ::ReleaseMutex(mutex);
-      ::CloseHandle(mutex);
-      return last_error;
-    }
-# else
-    if (!::InitializeCriticalSectionAndSpinCount(&crit_section_, 0x80000000))
-    {
-      last_error = ::GetLastError();
-      ::ReleaseMutex(mutex);
-      ::CloseHandle(mutex);
-      return last_error;
-    }
-# endif
-  }
-  __except(GetExceptionCode() == STATUS_NO_MEMORY
-      ? EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH)
-  {
-    ::ReleaseMutex(mutex);
-    ::CloseHandle(mutex);
-    return ERROR_OUTOFMEMORY;
-  }
-#endif
-
-  initialised_ = true;
-  ::ReleaseMutex(mutex);
-  ::CloseHandle(mutex);
-  return 0;
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_WINDOWS)
-
-#endif // ASIO_DETAIL_IMPL_WIN_STATIC_MUTEX_IPP
diff --git a/lib/asio/detail/impl/win_thread.ipp b/lib/asio/detail/impl/win_thread.ipp
deleted file mode 100644
index ed6dbaf..0000000
--- a/lib/asio/detail/impl/win_thread.ipp
+++ /dev/null
@@ -1,150 +0,0 @@
-//
-// detail/impl/win_thread.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_WIN_THREAD_IPP
-#define ASIO_DETAIL_IMPL_WIN_THREAD_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_WINDOWS) \
-  && !defined(ASIO_WINDOWS_APP) \
-  && !defined(UNDER_CE)
-
-#include <process.h>
-#include "asio/detail/throw_error.hpp"
-#include "asio/detail/win_thread.hpp"
-#include "asio/error.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-win_thread::~win_thread()
-{
-  ::CloseHandle(thread_);
-
-  // The exit_event_ handle is deliberately allowed to leak here since it
-  // is an error for the owner of an internal thread not to join() it.
-}
-
-void win_thread::join()
-{
-  HANDLE handles[2] = { exit_event_, thread_ };
-  ::WaitForMultipleObjects(2, handles, FALSE, INFINITE);
-  ::CloseHandle(exit_event_);
-  if (terminate_threads())
-  {
-    ::TerminateThread(thread_, 0);
-  }
-  else
-  {
-    ::QueueUserAPC(apc_function, thread_, 0);
-    ::WaitForSingleObject(thread_, INFINITE);
-  }
-}
-
-std::size_t win_thread::hardware_concurrency()
-{
-  SYSTEM_INFO system_info;
-  ::GetSystemInfo(&system_info);
-  return system_info.dwNumberOfProcessors;
-}
-
-void win_thread::start_thread(func_base* arg, unsigned int stack_size)
-{
-  ::HANDLE entry_event = 0;
-  arg->entry_event_ = entry_event = ::CreateEventW(0, true, false, 0);
-  if (!entry_event)
-  {
-    DWORD last_error = ::GetLastError();
-    delete arg;
-    asio::error_code ec(last_error,
-        asio::error::get_system_category());
-    asio::detail::throw_error(ec, "thread.entry_event");
-  }
-
-  arg->exit_event_ = exit_event_ = ::CreateEventW(0, true, false, 0);
-  if (!exit_event_)
-  {
-    DWORD last_error = ::GetLastError();
-    delete arg;
-    asio::error_code ec(last_error,
-        asio::error::get_system_category());
-    asio::detail::throw_error(ec, "thread.exit_event");
-  }
-
-  unsigned int thread_id = 0;
-  thread_ = reinterpret_cast<HANDLE>(::_beginthreadex(0,
-        stack_size, win_thread_function, arg, 0, &thread_id));
-  if (!thread_)
-  {
-    DWORD last_error = ::GetLastError();
-    delete arg;
-    if (entry_event)
-      ::CloseHandle(entry_event);
-    if (exit_event_)
-      ::CloseHandle(exit_event_);
-    asio::error_code ec(last_error,
-        asio::error::get_system_category());
-    asio::detail::throw_error(ec, "thread");
-  }
-
-  if (entry_event)
-  {
-    ::WaitForSingleObject(entry_event, INFINITE);
-    ::CloseHandle(entry_event);
-  }
-}
-
-unsigned int __stdcall win_thread_function(void* arg)
-{
-  win_thread::auto_func_base_ptr func = {
-      static_cast<win_thread::func_base*>(arg) };
-
-  ::SetEvent(func.ptr->entry_event_);
-
-  func.ptr->run();
-
-  // Signal that the thread has finished its work, but rather than returning go
-  // to sleep to put the thread into a well known state. If the thread is being
-  // joined during global object destruction then it may be killed using
-  // TerminateThread (to avoid a deadlock in DllMain). Otherwise, the SleepEx
-  // call will be interrupted using QueueUserAPC and the thread will shut down
-  // cleanly.
-  HANDLE exit_event = func.ptr->exit_event_;
-  delete func.ptr;
-  func.ptr = 0;
-  ::SetEvent(exit_event);
-  ::SleepEx(INFINITE, TRUE);
-
-  return 0;
-}
-
-#if defined(WINVER) && (WINVER < 0x0500)
-void __stdcall apc_function(ULONG) {}
-#else
-void __stdcall apc_function(ULONG_PTR) {}
-#endif
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_WINDOWS)
-       // && !defined(ASIO_WINDOWS_APP)
-       // && !defined(UNDER_CE)
-
-#endif // ASIO_DETAIL_IMPL_WIN_THREAD_IPP
diff --git a/lib/asio/detail/impl/win_tss_ptr.ipp b/lib/asio/detail/impl/win_tss_ptr.ipp
deleted file mode 100644
index 61df0ce..0000000
--- a/lib/asio/detail/impl/win_tss_ptr.ipp
+++ /dev/null
@@ -1,57 +0,0 @@
-//
-// detail/impl/win_tss_ptr.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_WIN_TSS_PTR_IPP
-#define ASIO_DETAIL_IMPL_WIN_TSS_PTR_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_WINDOWS)
-
-#include "asio/detail/throw_error.hpp"
-#include "asio/detail/win_tss_ptr.hpp"
-#include "asio/error.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-DWORD win_tss_ptr_create()
-{
-#if defined(UNDER_CE)
-  const DWORD out_of_indexes = 0xFFFFFFFF;
-#else
-  const DWORD out_of_indexes = TLS_OUT_OF_INDEXES;
-#endif
-
-  DWORD tss_key = ::TlsAlloc();
-  if (tss_key == out_of_indexes)
-  {
-    DWORD last_error = ::GetLastError();
-    asio::error_code ec(last_error,
-        asio::error::get_system_category());
-    asio::detail::throw_error(ec, "tss");
-  }
-  return tss_key;
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_WINDOWS)
-
-#endif // ASIO_DETAIL_IMPL_WIN_TSS_PTR_IPP
diff --git a/lib/asio/detail/impl/winrt_ssocket_service_base.ipp b/lib/asio/detail/impl/winrt_ssocket_service_base.ipp
deleted file mode 100644
index 288ca8b..0000000
--- a/lib/asio/detail/impl/winrt_ssocket_service_base.ipp
+++ /dev/null
@@ -1,629 +0,0 @@
-//
-// detail/impl/winrt_ssocket_service_base.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_WINRT_SSOCKET_SERVICE_BASE_IPP
-#define ASIO_DETAIL_IMPL_WINRT_SSOCKET_SERVICE_BASE_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_WINDOWS_RUNTIME)
-
-#include <cstring>
-#include "asio/detail/winrt_ssocket_service_base.hpp"
-#include "asio/detail/winrt_async_op.hpp"
-#include "asio/detail/winrt_utils.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-winrt_ssocket_service_base::winrt_ssocket_service_base(
-    asio::io_context& io_context)
-  : io_context_(use_service<io_context_impl>(io_context)),
-    async_manager_(use_service<winrt_async_manager>(io_context)),
-    mutex_(),
-    impl_list_(0)
-{
-}
-
-void winrt_ssocket_service_base::base_shutdown()
-{
-  // Close all implementations, causing all operations to complete.
-  asio::detail::mutex::scoped_lock lock(mutex_);
-  base_implementation_type* impl = impl_list_;
-  while (impl)
-  {
-    asio::error_code ignored_ec;
-    close(*impl, ignored_ec);
-    impl = impl->next_;
-  }
-}
-
-void winrt_ssocket_service_base::construct(
-    winrt_ssocket_service_base::base_implementation_type& impl)
-{
-  // Insert implementation into linked list of all implementations.
-  asio::detail::mutex::scoped_lock lock(mutex_);
-  impl.next_ = impl_list_;
-  impl.prev_ = 0;
-  if (impl_list_)
-    impl_list_->prev_ = &impl;
-  impl_list_ = &impl;
-}
-
-void winrt_ssocket_service_base::base_move_construct(
-    winrt_ssocket_service_base::base_implementation_type& impl,
-    winrt_ssocket_service_base::base_implementation_type& other_impl)
-{
-  impl.socket_ = other_impl.socket_;
-  other_impl.socket_ = nullptr;
-
-  // Insert implementation into linked list of all implementations.
-  asio::detail::mutex::scoped_lock lock(mutex_);
-  impl.next_ = impl_list_;
-  impl.prev_ = 0;
-  if (impl_list_)
-    impl_list_->prev_ = &impl;
-  impl_list_ = &impl;
-}
-
-void winrt_ssocket_service_base::base_move_assign(
-    winrt_ssocket_service_base::base_implementation_type& impl,
-    winrt_ssocket_service_base& other_service,
-    winrt_ssocket_service_base::base_implementation_type& other_impl)
-{
-  asio::error_code ignored_ec;
-  close(impl, ignored_ec);
-
-  if (this != &other_service)
-  {
-    // Remove implementation from linked list of all implementations.
-    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;
-  }
-
-  impl.socket_ = other_impl.socket_;
-  other_impl.socket_ = nullptr;
-
-  if (this != &other_service)
-  {
-    // Insert implementation into linked list of all implementations.
-    asio::detail::mutex::scoped_lock lock(other_service.mutex_);
-    impl.next_ = other_service.impl_list_;
-    impl.prev_ = 0;
-    if (other_service.impl_list_)
-      other_service.impl_list_->prev_ = &impl;
-    other_service.impl_list_ = &impl;
-  }
-}
-
-void winrt_ssocket_service_base::destroy(
-    winrt_ssocket_service_base::base_implementation_type& impl)
-{
-  asio::error_code ignored_ec;
-  close(impl, ignored_ec);
-
-  // Remove implementation from linked list of all implementations.
-  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;
-}
-
-asio::error_code winrt_ssocket_service_base::close(
-    winrt_ssocket_service_base::base_implementation_type& impl,
-    asio::error_code& ec)
-{
-  if (impl.socket_)
-  {
-    delete impl.socket_;
-    impl.socket_ = nullptr;
-  }
-
-  ec = asio::error_code();
-  return ec;
-}
-
-winrt_ssocket_service_base::native_handle_type
-winrt_ssocket_service_base::release(
-    winrt_ssocket_service_base::base_implementation_type& impl,
-    asio::error_code& ec)
-{
-  if (!is_open(impl))
-    return nullptr;
-
-  cancel(impl, ec);
-  if (ec)
-    return nullptr;
-
-  native_handle_type tmp = impl.socket_;
-  impl.socket_ = nullptr;
-  return tmp;
-}
-
-std::size_t winrt_ssocket_service_base::do_get_endpoint(
-    const base_implementation_type& impl, bool local,
-    void* addr, std::size_t addr_len, asio::error_code& ec) const
-{
-  if (!is_open(impl))
-  {
-    ec = asio::error::bad_descriptor;
-    return addr_len;
-  }
-
-  try
-  {
-    std::string addr_string = winrt_utils::string(local
-        ? impl.socket_->Information->LocalAddress->CanonicalName
-        : impl.socket_->Information->RemoteAddress->CanonicalName);
-    unsigned short port = winrt_utils::integer(local
-        ? impl.socket_->Information->LocalPort
-        : impl.socket_->Information->RemotePort);
-    unsigned long scope = 0;
-
-    switch (reinterpret_cast<const socket_addr_type*>(addr)->sa_family)
-    {
-    case ASIO_OS_DEF(AF_INET):
-      if (addr_len < sizeof(sockaddr_in4_type))
-      {
-        ec = asio::error::invalid_argument;
-        return addr_len;
-      }
-      else
-      {
-        socket_ops::inet_pton(ASIO_OS_DEF(AF_INET), addr_string.c_str(),
-            &reinterpret_cast<sockaddr_in4_type*>(addr)->sin_addr, &scope, ec);
-        reinterpret_cast<sockaddr_in4_type*>(addr)->sin_port
-          = socket_ops::host_to_network_short(port);
-        ec = asio::error_code();
-        return sizeof(sockaddr_in4_type);
-      }
-    case ASIO_OS_DEF(AF_INET6):
-      if (addr_len < sizeof(sockaddr_in6_type))
-      {
-        ec = asio::error::invalid_argument;
-        return addr_len;
-      }
-      else
-      {
-        socket_ops::inet_pton(ASIO_OS_DEF(AF_INET6), addr_string.c_str(),
-            &reinterpret_cast<sockaddr_in6_type*>(addr)->sin6_addr, &scope, ec);
-        reinterpret_cast<sockaddr_in6_type*>(addr)->sin6_port
-          = socket_ops::host_to_network_short(port);
-        ec = asio::error_code();
-        return sizeof(sockaddr_in6_type);
-      }
-    default:
-      ec = asio::error::address_family_not_supported;
-      return addr_len;
-    }
-  }
-  catch (Platform::Exception^ e)
-  {
-    ec = asio::error_code(e->HResult,
-        asio::system_category());
-    return addr_len;
-  }
-}
-
-asio::error_code winrt_ssocket_service_base::do_set_option(
-    winrt_ssocket_service_base::base_implementation_type& impl,
-    int level, int optname, const void* optval,
-    std::size_t optlen, asio::error_code& ec)
-{
-  if (!is_open(impl))
-  {
-    ec = asio::error::bad_descriptor;
-    return ec;
-  }
-
-  try
-  {
-    if (level == ASIO_OS_DEF(SOL_SOCKET)
-        && optname == ASIO_OS_DEF(SO_KEEPALIVE))
-    {
-      if (optlen == sizeof(int))
-      {
-        int value = 0;
-        std::memcpy(&value, optval, optlen);
-        impl.socket_->Control->KeepAlive = !!value;
-        ec = asio::error_code();
-      }
-      else
-      {
-        ec = asio::error::invalid_argument;
-      }
-    }
-    else if (level == ASIO_OS_DEF(IPPROTO_TCP)
-        && optname == ASIO_OS_DEF(TCP_NODELAY))
-    {
-      if (optlen == sizeof(int))
-      {
-        int value = 0;
-        std::memcpy(&value, optval, optlen);
-        impl.socket_->Control->NoDelay = !!value;
-        ec = asio::error_code();
-      }
-      else
-      {
-        ec = asio::error::invalid_argument;
-      }
-    }
-    else
-    {
-      ec = asio::error::invalid_argument;
-    }
-  }
-  catch (Platform::Exception^ e)
-  {
-    ec = asio::error_code(e->HResult,
-        asio::system_category());
-  }
-
-  return ec;
-}
-
-void winrt_ssocket_service_base::do_get_option(
-    const winrt_ssocket_service_base::base_implementation_type& impl,
-    int level, int optname, void* optval,
-    std::size_t* optlen, asio::error_code& ec) const
-{
-  if (!is_open(impl))
-  {
-    ec = asio::error::bad_descriptor;
-    return;
-  }
-
-  try
-  {
-    if (level == ASIO_OS_DEF(SOL_SOCKET)
-        && optname == ASIO_OS_DEF(SO_KEEPALIVE))
-    {
-      if (*optlen >= sizeof(int))
-      {
-        int value = impl.socket_->Control->KeepAlive ? 1 : 0;
-        std::memcpy(optval, &value, sizeof(int));
-        *optlen = sizeof(int);
-        ec = asio::error_code();
-      }
-      else
-      {
-        ec = asio::error::invalid_argument;
-      }
-    }
-    else if (level == ASIO_OS_DEF(IPPROTO_TCP)
-        && optname == ASIO_OS_DEF(TCP_NODELAY))
-    {
-      if (*optlen >= sizeof(int))
-      {
-        int value = impl.socket_->Control->NoDelay ? 1 : 0;
-        std::memcpy(optval, &value, sizeof(int));
-        *optlen = sizeof(int);
-        ec = asio::error_code();
-      }
-      else
-      {
-        ec = asio::error::invalid_argument;
-      }
-    }
-    else
-    {
-      ec = asio::error::invalid_argument;
-    }
-  }
-  catch (Platform::Exception^ e)
-  {
-    ec = asio::error_code(e->HResult,
-        asio::system_category());
-  }
-}
-
-asio::error_code winrt_ssocket_service_base::do_connect(
-    winrt_ssocket_service_base::base_implementation_type& impl,
-    const void* addr, asio::error_code& ec)
-{
-  if (!is_open(impl))
-  {
-    ec = asio::error::bad_descriptor;
-    return ec;
-  }
-
-  char addr_string[max_addr_v6_str_len];
-  unsigned short port;
-  switch (reinterpret_cast<const socket_addr_type*>(addr)->sa_family)
-  {
-  case ASIO_OS_DEF(AF_INET):
-    socket_ops::inet_ntop(ASIO_OS_DEF(AF_INET),
-        &reinterpret_cast<const sockaddr_in4_type*>(addr)->sin_addr,
-        addr_string, sizeof(addr_string), 0, ec);
-    port = socket_ops::network_to_host_short(
-        reinterpret_cast<const sockaddr_in4_type*>(addr)->sin_port);
-    break;
-  case ASIO_OS_DEF(AF_INET6):
-    socket_ops::inet_ntop(ASIO_OS_DEF(AF_INET6),
-        &reinterpret_cast<const sockaddr_in6_type*>(addr)->sin6_addr,
-        addr_string, sizeof(addr_string), 0, ec);
-    port = socket_ops::network_to_host_short(
-        reinterpret_cast<const sockaddr_in6_type*>(addr)->sin6_port);
-    break;
-  default:
-    ec = asio::error::address_family_not_supported;
-    return ec;
-  }
-
-  if (!ec) try
-  {
-    async_manager_.sync(impl.socket_->ConnectAsync(
-          ref new Windows::Networking::HostName(
-            winrt_utils::string(addr_string)),
-          winrt_utils::string(port)), ec);
-  }
-  catch (Platform::Exception^ e)
-  {
-    ec = asio::error_code(e->HResult,
-        asio::system_category());
-  }
-
-  return ec;
-}
-
-void winrt_ssocket_service_base::start_connect_op(
-    winrt_ssocket_service_base::base_implementation_type& impl,
-    const void* addr, winrt_async_op<void>* op, bool is_continuation)
-{
-  if (!is_open(impl))
-  {
-    op->ec_ = asio::error::bad_descriptor;
-    io_context_.post_immediate_completion(op, is_continuation);
-    return;
-  }
-
-  char addr_string[max_addr_v6_str_len];
-  unsigned short port = 0;
-  switch (reinterpret_cast<const socket_addr_type*>(addr)->sa_family)
-  {
-  case ASIO_OS_DEF(AF_INET):
-    socket_ops::inet_ntop(ASIO_OS_DEF(AF_INET),
-        &reinterpret_cast<const sockaddr_in4_type*>(addr)->sin_addr,
-        addr_string, sizeof(addr_string), 0, op->ec_);
-    port = socket_ops::network_to_host_short(
-        reinterpret_cast<const sockaddr_in4_type*>(addr)->sin_port);
-    break;
-  case ASIO_OS_DEF(AF_INET6):
-    socket_ops::inet_ntop(ASIO_OS_DEF(AF_INET6),
-        &reinterpret_cast<const sockaddr_in6_type*>(addr)->sin6_addr,
-        addr_string, sizeof(addr_string), 0, op->ec_);
-    port = socket_ops::network_to_host_short(
-        reinterpret_cast<const sockaddr_in6_type*>(addr)->sin6_port);
-    break;
-  default:
-    op->ec_ = asio::error::address_family_not_supported;
-    break;
-  }
-
-  if (op->ec_)
-  {
-    io_context_.post_immediate_completion(op, is_continuation);
-    return;
-  }
-
-  try
-  {
-    async_manager_.async(impl.socket_->ConnectAsync(
-          ref new Windows::Networking::HostName(
-            winrt_utils::string(addr_string)),
-          winrt_utils::string(port)), op);
-  }
-  catch (Platform::Exception^ e)
-  {
-    op->ec_ = asio::error_code(
-        e->HResult, asio::system_category());
-    io_context_.post_immediate_completion(op, is_continuation);
-  }
-}
-
-std::size_t winrt_ssocket_service_base::do_send(
-    winrt_ssocket_service_base::base_implementation_type& impl,
-    const asio::const_buffer& data,
-    socket_base::message_flags flags, asio::error_code& ec)
-{
-  if (flags)
-  {
-    ec = asio::error::operation_not_supported;
-    return 0;
-  }
-
-  if (!is_open(impl))
-  {
-    ec = asio::error::bad_descriptor;
-    return 0;
-  }
-
-  try
-  {
-    buffer_sequence_adapter<asio::const_buffer,
-      asio::const_buffer> bufs(asio::buffer(data));
-
-    if (bufs.all_empty())
-    {
-      ec = asio::error_code();
-      return 0;
-    }
-
-    return async_manager_.sync(
-        impl.socket_->OutputStream->WriteAsync(bufs.buffers()[0]), ec);
-  }
-  catch (Platform::Exception^ e)
-  {
-    ec = asio::error_code(e->HResult,
-        asio::system_category());
-    return 0;
-  }
-}
-
-void winrt_ssocket_service_base::start_send_op(
-      winrt_ssocket_service_base::base_implementation_type& impl,
-      const asio::const_buffer& data, socket_base::message_flags flags,
-      winrt_async_op<unsigned int>* op, bool is_continuation)
-{
-  if (flags)
-  {
-    op->ec_ = asio::error::operation_not_supported;
-    io_context_.post_immediate_completion(op, is_continuation);
-    return;
-  }
-
-  if (!is_open(impl))
-  {
-    op->ec_ = asio::error::bad_descriptor;
-    io_context_.post_immediate_completion(op, is_continuation);
-    return;
-  }
-
-  try
-  {
-    buffer_sequence_adapter<asio::const_buffer,
-        asio::const_buffer> bufs(asio::buffer(data));
-
-    if (bufs.all_empty())
-    {
-      io_context_.post_immediate_completion(op, is_continuation);
-      return;
-    }
-
-    async_manager_.async(
-        impl.socket_->OutputStream->WriteAsync(bufs.buffers()[0]), op);
-  }
-  catch (Platform::Exception^ e)
-  {
-    op->ec_ = asio::error_code(e->HResult,
-        asio::system_category());
-    io_context_.post_immediate_completion(op, is_continuation);
-  }
-}
-
-std::size_t winrt_ssocket_service_base::do_receive(
-    winrt_ssocket_service_base::base_implementation_type& impl,
-    const asio::mutable_buffer& data,
-    socket_base::message_flags flags, asio::error_code& ec)
-{
-  if (flags)
-  {
-    ec = asio::error::operation_not_supported;
-    return 0;
-  }
-
-  if (!is_open(impl))
-  {
-    ec = asio::error::bad_descriptor;
-    return 0;
-  }
-
-  try
-  {
-    buffer_sequence_adapter<asio::mutable_buffer,
-        asio::mutable_buffer> bufs(asio::buffer(data));
-
-    if (bufs.all_empty())
-    {
-      ec = asio::error_code();
-      return 0;
-    }
-
-    async_manager_.sync(
-        impl.socket_->InputStream->ReadAsync(
-          bufs.buffers()[0], bufs.buffers()[0]->Capacity,
-          Windows::Storage::Streams::InputStreamOptions::Partial), ec);
-
-    std::size_t bytes_transferred = bufs.buffers()[0]->Length;
-    if (bytes_transferred == 0 && !ec)
-    {
-      ec = asio::error::eof;
-    }
-
-    return bytes_transferred;
-  }
-  catch (Platform::Exception^ e)
-  {
-    ec = asio::error_code(e->HResult,
-        asio::system_category());
-    return 0;
-  }
-}
-
-void winrt_ssocket_service_base::start_receive_op(
-      winrt_ssocket_service_base::base_implementation_type& impl,
-      const asio::mutable_buffer& data, socket_base::message_flags flags,
-      winrt_async_op<Windows::Storage::Streams::IBuffer^>* op,
-      bool is_continuation)
-{
-  if (flags)
-  {
-    op->ec_ = asio::error::operation_not_supported;
-    io_context_.post_immediate_completion(op, is_continuation);
-    return;
-  }
-
-  if (!is_open(impl))
-  {
-    op->ec_ = asio::error::bad_descriptor;
-    io_context_.post_immediate_completion(op, is_continuation);
-    return;
-  }
-
-  try
-  {
-    buffer_sequence_adapter<asio::mutable_buffer,
-        asio::mutable_buffer> bufs(asio::buffer(data));
-
-    if (bufs.all_empty())
-    {
-      io_context_.post_immediate_completion(op, is_continuation);
-      return;
-    }
-
-    async_manager_.async(
-        impl.socket_->InputStream->ReadAsync(
-          bufs.buffers()[0], bufs.buffers()[0]->Capacity,
-          Windows::Storage::Streams::InputStreamOptions::Partial), op);
-  }
-  catch (Platform::Exception^ e)
-  {
-    op->ec_ = asio::error_code(e->HResult,
-        asio::system_category());
-    io_context_.post_immediate_completion(op, is_continuation);
-  }
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_WINDOWS_RUNTIME)
-
-#endif // ASIO_DETAIL_IMPL_WINRT_SSOCKET_SERVICE_BASE_IPP
diff --git a/lib/asio/detail/impl/winrt_timer_scheduler.hpp b/lib/asio/detail/impl/winrt_timer_scheduler.hpp
deleted file mode 100644
index 856378f..0000000
--- a/lib/asio/detail/impl/winrt_timer_scheduler.hpp
+++ /dev/null
@@ -1,92 +0,0 @@
-//
-// detail/impl/winrt_timer_scheduler.hpp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_WINRT_TIMER_SCHEDULER_HPP
-#define ASIO_DETAIL_IMPL_WINRT_TIMER_SCHEDULER_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_WINDOWS_RUNTIME)
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-template <typename Time_Traits>
-void winrt_timer_scheduler::add_timer_queue(timer_queue<Time_Traits>& queue)
-{
-  do_add_timer_queue(queue);
-}
-
-// Remove a timer queue from the reactor.
-template <typename Time_Traits>
-void winrt_timer_scheduler::remove_timer_queue(timer_queue<Time_Traits>& queue)
-{
-  do_remove_timer_queue(queue);
-}
-
-template <typename Time_Traits>
-void winrt_timer_scheduler::schedule_timer(timer_queue<Time_Traits>& queue,
-    const typename Time_Traits::time_type& time,
-    typename timer_queue<Time_Traits>::per_timer_data& timer, wait_op* op)
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-
-  if (shutdown_)
-  {
-    io_context_.post_immediate_completion(op, false);
-    return;
-  }
-
-  bool earliest = queue.enqueue_timer(time, timer, op);
-  io_context_.work_started();
-  if (earliest)
-    event_.signal(lock);
-}
-
-template <typename Time_Traits>
-std::size_t winrt_timer_scheduler::cancel_timer(timer_queue<Time_Traits>& queue,
-    typename timer_queue<Time_Traits>::per_timer_data& timer,
-    std::size_t max_cancelled)
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-  op_queue<operation> ops;
-  std::size_t n = queue.cancel_timer(timer, ops, max_cancelled);
-  lock.unlock();
-  io_context_.post_deferred_completions(ops);
-  return n;
-}
-
-template <typename Time_Traits>
-void winrt_timer_scheduler::move_timer(timer_queue<Time_Traits>& queue,
-    typename timer_queue<Time_Traits>::per_timer_data& to,
-    typename timer_queue<Time_Traits>::per_timer_data& from)
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-  op_queue<operation> ops;
-  queue.cancel_timer(to, ops);
-  queue.move_timer(to, from);
-  lock.unlock();
-  scheduler_.post_deferred_completions(ops);
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_WINDOWS_RUNTIME)
-
-#endif // ASIO_DETAIL_IMPL_WINRT_TIMER_SCHEDULER_HPP
diff --git a/lib/asio/detail/impl/winrt_timer_scheduler.ipp b/lib/asio/detail/impl/winrt_timer_scheduler.ipp
deleted file mode 100644
index ef21399..0000000
--- a/lib/asio/detail/impl/winrt_timer_scheduler.ipp
+++ /dev/null
@@ -1,122 +0,0 @@
-//
-// detail/impl/winrt_timer_scheduler.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_WINRT_TIMER_SCHEDULER_IPP
-#define ASIO_DETAIL_IMPL_WINRT_TIMER_SCHEDULER_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_WINDOWS_RUNTIME)
-
-#include "asio/detail/bind_handler.hpp"
-#include "asio/detail/winrt_timer_scheduler.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-winrt_timer_scheduler::winrt_timer_scheduler(
-    asio::io_context& io_context)
-  : asio::detail::service_base<winrt_timer_scheduler>(io_context),
-    io_context_(use_service<io_context_impl>(io_context)),
-    mutex_(),
-    event_(),
-    timer_queues_(),
-    thread_(0),
-    stop_thread_(false),
-    shutdown_(false)
-{
-  thread_ = new asio::detail::thread(
-      bind_handler(&winrt_timer_scheduler::call_run_thread, this));
-}
-
-winrt_timer_scheduler::~winrt_timer_scheduler()
-{
-  shutdown();
-}
-
-void winrt_timer_scheduler::shutdown()
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-  shutdown_ = true;
-  stop_thread_ = true;
-  event_.signal(lock);
-  lock.unlock();
-
-  if (thread_)
-  {
-    thread_->join();
-    delete thread_;
-    thread_ = 0;
-  }
-
-  op_queue<operation> ops;
-  timer_queues_.get_all_timers(ops);
-  io_context_.abandon_operations(ops);
-}
-
-void winrt_timer_scheduler::notify_fork(asio::io_context::fork_event)
-{
-}
-
-void winrt_timer_scheduler::init_task()
-{
-}
-
-void winrt_timer_scheduler::run_thread()
-{
-  asio::detail::mutex::scoped_lock lock(mutex_);
-  while (!stop_thread_)
-  {
-    const long max_wait_duration = 5 * 60 * 1000000;
-    long wait_duration = timer_queues_.wait_duration_usec(max_wait_duration);
-    event_.wait_for_usec(lock, wait_duration);
-    event_.clear(lock);
-    op_queue<operation> ops;
-    timer_queues_.get_ready_timers(ops);
-    if (!ops.empty())
-    {
-      lock.unlock();
-      io_context_.post_deferred_completions(ops);
-      lock.lock();
-    }
-  }
-}
-
-void winrt_timer_scheduler::call_run_thread(winrt_timer_scheduler* scheduler)
-{
-  scheduler->run_thread();
-}
-
-void winrt_timer_scheduler::do_add_timer_queue(timer_queue_base& queue)
-{
-  mutex::scoped_lock lock(mutex_);
-  timer_queues_.insert(&queue);
-}
-
-void winrt_timer_scheduler::do_remove_timer_queue(timer_queue_base& queue)
-{
-  mutex::scoped_lock lock(mutex_);
-  timer_queues_.erase(&queue);
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_WINDOWS_RUNTIME)
-
-#endif // ASIO_DETAIL_IMPL_WINRT_TIMER_SCHEDULER_IPP
diff --git a/lib/asio/detail/impl/winsock_init.ipp b/lib/asio/detail/impl/winsock_init.ipp
deleted file mode 100644
index da4b0c0..0000000
--- a/lib/asio/detail/impl/winsock_init.ipp
+++ /dev/null
@@ -1,82 +0,0 @@
-//
-// detail/impl/winsock_init.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_WINSOCK_INIT_IPP
-#define ASIO_DETAIL_IMPL_WINSOCK_INIT_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-
-#include "asio/detail/socket_types.hpp"
-#include "asio/detail/winsock_init.hpp"
-#include "asio/detail/throw_error.hpp"
-#include "asio/error.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-void winsock_init_base::startup(data& d,
-    unsigned char major, unsigned char minor)
-{
-  if (::InterlockedIncrement(&d.init_count_) == 1)
-  {
-    WSADATA wsa_data;
-    long result = ::WSAStartup(MAKEWORD(major, minor), &wsa_data);
-    ::InterlockedExchange(&d.result_, result);
-  }
-}
-
-void winsock_init_base::manual_startup(data& d)
-{
-  if (::InterlockedIncrement(&d.init_count_) == 1)
-  {
-    ::InterlockedExchange(&d.result_, 0);
-  }
-}
-
-void winsock_init_base::cleanup(data& d)
-{
-  if (::InterlockedDecrement(&d.init_count_) == 0)
-  {
-    ::WSACleanup();
-  }
-}
-
-void winsock_init_base::manual_cleanup(data& d)
-{
-  ::InterlockedDecrement(&d.init_count_);
-}
-
-void winsock_init_base::throw_on_error(data& d)
-{
-  long result = ::InterlockedExchangeAdd(&d.result_, 0);
-  if (result != 0)
-  {
-    asio::error_code ec(result,
-        asio::error::get_system_category());
-    asio::detail::throw_error(ec, "winsock");
-  }
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-
-#endif // ASIO_DETAIL_IMPL_WINSOCK_INIT_IPP