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diff --git a/lib/asio/detail/select_reactor.hpp b/lib/asio/detail/select_reactor.hpp
deleted file mode 100644
index 0996549..0000000
--- a/lib/asio/detail/select_reactor.hpp
+++ /dev/null
@@ -1,238 +0,0 @@
-//
-// detail/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_SELECT_REACTOR_HPP
-#define ASIO_DETAIL_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 <cstddef>
-#include "asio/detail/fd_set_adapter.hpp"
-#include "asio/detail/limits.hpp"
-#include "asio/detail/mutex.hpp"
-#include "asio/detail/op_queue.hpp"
-#include "asio/detail/reactor_op.hpp"
-#include "asio/detail/reactor_op_queue.hpp"
-#include "asio/detail/select_interrupter.hpp"
-#include "asio/detail/socket_types.hpp"
-#include "asio/detail/timer_queue_base.hpp"
-#include "asio/detail/timer_queue_set.hpp"
-#include "asio/detail/wait_op.hpp"
-#include "asio/execution_context.hpp"
-
-#if defined(ASIO_HAS_IOCP)
-# include "asio/detail/thread.hpp"
-#endif // defined(ASIO_HAS_IOCP)
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-class select_reactor
-  : public execution_context_service_base<select_reactor>
-{
-public:
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  enum op_types { read_op = 0, write_op = 1, except_op = 2,
-    max_select_ops = 3, connect_op = 3, max_ops = 4 };
-#else // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  enum op_types { read_op = 0, write_op = 1, except_op = 2,
-    max_select_ops = 3, connect_op = 1, max_ops = 3 };
-#endif // defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-
-  // Per-descriptor data.
-  struct per_descriptor_data
-  {
-  };
-
-  // Constructor.
-  ASIO_DECL select_reactor(asio::execution_context& ctx);
-
-  // Destructor.
-  ASIO_DECL ~select_reactor();
-
-  // Destroy all user-defined handler objects owned by the service.
-  ASIO_DECL void shutdown();
-
-  // Recreate internal descriptors following a fork.
-  ASIO_DECL void notify_fork(
-      asio::execution_context::fork_event fork_ev);
-
-  // Initialise the task, but only if the reactor is not in its own thread.
-  ASIO_DECL void init_task();
-
-  // Register a socket with the reactor. Returns 0 on success, system error
-  // code on failure.
-  ASIO_DECL int register_descriptor(socket_type, per_descriptor_data&);
-
-  // Register a descriptor with an associated single operation. Returns 0 on
-  // success, system error code on failure.
-  ASIO_DECL int register_internal_descriptor(
-      int op_type, socket_type descriptor,
-      per_descriptor_data& descriptor_data, reactor_op* op);
-
-  // Post a reactor operation for immediate completion.
-  void post_immediate_completion(reactor_op* op, bool is_continuation)
-  {
-    scheduler_.post_immediate_completion(op, is_continuation);
-  }
-
-  // Start a new operation. The reactor operation will be performed when the
-  // given descriptor is flagged as ready, or an error has occurred.
-  ASIO_DECL void start_op(int op_type, socket_type descriptor,
-      per_descriptor_data&, reactor_op* op, bool is_continuation, bool);
-
-  // Cancel all operations associated with the given descriptor. The
-  // handlers associated with the descriptor will be invoked with the
-  // operation_aborted error.
-  ASIO_DECL void cancel_ops(socket_type descriptor, per_descriptor_data&);
-
-  // Cancel any operations that are running against the descriptor and remove
-  // its registration from the reactor. The reactor resources associated with
-  // the descriptor must be released by calling cleanup_descriptor_data.
-  ASIO_DECL void deregister_descriptor(socket_type descriptor,
-      per_descriptor_data&, bool closing);
-
-  // Remove the descriptor's registration from the reactor. The reactor
-  // resources associated with the descriptor must be released by calling
-  // cleanup_descriptor_data.
-  ASIO_DECL void deregister_internal_descriptor(
-      socket_type descriptor, per_descriptor_data&);
-
-  // Perform any post-deregistration cleanup tasks associated with the
-  // descriptor data.
-  ASIO_DECL void cleanup_descriptor_data(per_descriptor_data&);
-
-  // Move descriptor registration from one descriptor_data object to another.
-  ASIO_DECL void move_descriptor(socket_type descriptor,
-      per_descriptor_data& target_descriptor_data,
-      per_descriptor_data& source_descriptor_data);
-
-  // Add a new timer queue to the reactor.
-  template <typename Time_Traits>
-  void add_timer_queue(timer_queue<Time_Traits>& queue);
-
-  // Remove a timer queue from the reactor.
-  template <typename Time_Traits>
-  void remove_timer_queue(timer_queue<Time_Traits>& queue);
-
-  // Schedule a new operation in the given timer queue to expire at the
-  // specified absolute time.
-  template <typename Time_Traits>
-  void 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);
-
-  // Cancel the timer operations associated with the given token. Returns the
-  // number of operations that have been posted or dispatched.
-  template <typename Time_Traits>
-  std::size_t cancel_timer(timer_queue<Time_Traits>& queue,
-      typename timer_queue<Time_Traits>::per_timer_data& timer,
-      std::size_t max_cancelled = (std::numeric_limits<std::size_t>::max)());
-
-  // Move the timer operations associated with the given timer.
-  template <typename Time_Traits>
-  void 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);
-
-  // Run select once until interrupted or events are ready to be dispatched.
-  ASIO_DECL void run(long usec, op_queue<operation>& ops);
-
-  // Interrupt the select loop.
-  ASIO_DECL void interrupt();
-
-private:
-#if defined(ASIO_HAS_IOCP)
-  // Run the select loop in the thread.
-  ASIO_DECL void run_thread();
-#endif // defined(ASIO_HAS_IOCP)
-
-  // Helper function to add a new timer queue.
-  ASIO_DECL void do_add_timer_queue(timer_queue_base& queue);
-
-  // Helper function to remove a timer queue.
-  ASIO_DECL void do_remove_timer_queue(timer_queue_base& queue);
-
-  // Get the timeout value for the select call.
-  ASIO_DECL timeval* get_timeout(long usec, timeval& tv);
-
-  // Cancel all operations associated with the given descriptor. This function
-  // does not acquire the select_reactor's mutex.
-  ASIO_DECL void cancel_ops_unlocked(socket_type descriptor,
-      const asio::error_code& ec);
-
-  // The scheduler implementation used to post completions.
-# if defined(ASIO_HAS_IOCP)
-  typedef class win_iocp_io_context scheduler_type;
-# else // defined(ASIO_HAS_IOCP)
-  typedef class scheduler scheduler_type;
-# endif // defined(ASIO_HAS_IOCP)
-  scheduler_type& scheduler_;
-
-  // Mutex to protect access to internal data.
-  asio::detail::mutex mutex_;
-
-  // The interrupter is used to break a blocking select call.
-  select_interrupter interrupter_;
-
-  // The queues of read, write and except operations.
-  reactor_op_queue<socket_type> op_queue_[max_ops];
-
-  // The file descriptor sets to be passed to the select system call.
-  fd_set_adapter fd_sets_[max_select_ops];
-
-  // The timer queues.
-  timer_queue_set timer_queues_;
-
-#if defined(ASIO_HAS_IOCP)
-  // Helper class to run the reactor loop in a thread.
-  class thread_function;
-  friend class thread_function;
-
-  // Does the reactor loop thread need to stop.
-  bool stop_thread_;
-
-  // The thread that is running the reactor loop.
-  asio::detail::thread* thread_;
-#endif // defined(ASIO_HAS_IOCP)
-
-  // Whether the service has been shut down.
-  bool shutdown_;
-};
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#include "asio/detail/impl/select_reactor.hpp"
-#if defined(ASIO_HEADER_ONLY)
-# include "asio/detail/impl/select_reactor.ipp"
-#endif // defined(ASIO_HEADER_ONLY)
-
-#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_SELECT_REACTOR_HPP