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/

31 files changed, 0 insertions, 10140 deletions

diff --git a/lib/asio/impl/buffered_read_stream.hpp b/lib/asio/impl/buffered_read_stream.hpp
deleted file mode 100644
index e0ed20e..0000000
--- a/lib/asio/impl/buffered_read_stream.hpp
+++ /dev/null
@@ -1,429 +0,0 @@
-//
-// impl/buffered_read_stream.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_IMPL_BUFFERED_READ_STREAM_HPP
-#define ASIO_IMPL_BUFFERED_READ_STREAM_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/associated_allocator.hpp"
-#include "asio/associated_executor.hpp"
-#include "asio/detail/handler_alloc_helpers.hpp"
-#include "asio/detail/handler_cont_helpers.hpp"
-#include "asio/detail/handler_invoke_helpers.hpp"
-#include "asio/detail/handler_type_requirements.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-template <typename Stream>
-std::size_t buffered_read_stream<Stream>::fill()
-{
-  detail::buffer_resize_guard<detail::buffered_stream_storage>
-    resize_guard(storage_);
-  std::size_t previous_size = storage_.size();
-  storage_.resize(storage_.capacity());
-  storage_.resize(previous_size + next_layer_.read_some(buffer(
-          storage_.data() + previous_size,
-          storage_.size() - previous_size)));
-  resize_guard.commit();
-  return storage_.size() - previous_size;
-}
-
-template <typename Stream>
-std::size_t buffered_read_stream<Stream>::fill(asio::error_code& ec)
-{
-  detail::buffer_resize_guard<detail::buffered_stream_storage>
-    resize_guard(storage_);
-  std::size_t previous_size = storage_.size();
-  storage_.resize(storage_.capacity());
-  storage_.resize(previous_size + next_layer_.read_some(buffer(
-          storage_.data() + previous_size,
-          storage_.size() - previous_size),
-        ec));
-  resize_guard.commit();
-  return storage_.size() - previous_size;
-}
-
-namespace detail
-{
-  template <typename ReadHandler>
-  class buffered_fill_handler
-  {
-  public:
-    buffered_fill_handler(detail::buffered_stream_storage& storage,
-        std::size_t previous_size, ReadHandler& handler)
-      : storage_(storage),
-        previous_size_(previous_size),
-        handler_(ASIO_MOVE_CAST(ReadHandler)(handler))
-    {
-    }
-
-#if defined(ASIO_HAS_MOVE)
-    buffered_fill_handler(const buffered_fill_handler& other)
-      : storage_(other.storage_),
-        previous_size_(other.previous_size_),
-        handler_(other.handler_)
-    {
-    }
-
-    buffered_fill_handler(buffered_fill_handler&& other)
-      : storage_(other.storage_),
-        previous_size_(other.previous_size_),
-        handler_(ASIO_MOVE_CAST(ReadHandler)(other.handler_))
-    {
-    }
-#endif // defined(ASIO_HAS_MOVE)
-
-    void operator()(const asio::error_code& ec,
-        const std::size_t bytes_transferred)
-    {
-      storage_.resize(previous_size_ + bytes_transferred);
-      handler_(ec, bytes_transferred);
-    }
-
-  //private:
-    detail::buffered_stream_storage& storage_;
-    std::size_t previous_size_;
-    ReadHandler handler_;
-  };
-
-  template <typename ReadHandler>
-  inline void* asio_handler_allocate(std::size_t size,
-      buffered_fill_handler<ReadHandler>* this_handler)
-  {
-    return asio_handler_alloc_helpers::allocate(
-        size, this_handler->handler_);
-  }
-
-  template <typename ReadHandler>
-  inline void asio_handler_deallocate(void* pointer, std::size_t size,
-      buffered_fill_handler<ReadHandler>* this_handler)
-  {
-    asio_handler_alloc_helpers::deallocate(
-        pointer, size, this_handler->handler_);
-  }
-
-  template <typename ReadHandler>
-  inline bool asio_handler_is_continuation(
-      buffered_fill_handler<ReadHandler>* this_handler)
-  {
-    return asio_handler_cont_helpers::is_continuation(
-          this_handler->handler_);
-  }
-
-  template <typename Function, typename ReadHandler>
-  inline void asio_handler_invoke(Function& function,
-      buffered_fill_handler<ReadHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-
-  template <typename Function, typename ReadHandler>
-  inline void asio_handler_invoke(const Function& function,
-      buffered_fill_handler<ReadHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-} // namespace detail
-
-#if !defined(GENERATING_DOCUMENTATION)
-
-template <typename ReadHandler, typename Allocator>
-struct associated_allocator<
-    detail::buffered_fill_handler<ReadHandler>, Allocator>
-{
-  typedef typename associated_allocator<ReadHandler, Allocator>::type type;
-
-  static type get(const detail::buffered_fill_handler<ReadHandler>& h,
-      const Allocator& a = Allocator()) ASIO_NOEXCEPT
-  {
-    return associated_allocator<ReadHandler, Allocator>::get(h.handler_, a);
-  }
-};
-
-template <typename ReadHandler, typename Executor>
-struct associated_executor<
-    detail::buffered_fill_handler<ReadHandler>, Executor>
-{
-  typedef typename associated_executor<ReadHandler, Executor>::type type;
-
-  static type get(const detail::buffered_fill_handler<ReadHandler>& h,
-      const Executor& ex = Executor()) ASIO_NOEXCEPT
-  {
-    return associated_executor<ReadHandler, Executor>::get(h.handler_, ex);
-  }
-};
-
-#endif // !defined(GENERATING_DOCUMENTATION)
-
-template <typename Stream>
-template <typename ReadHandler>
-ASIO_INITFN_RESULT_TYPE(ReadHandler,
-    void (asio::error_code, std::size_t))
-buffered_read_stream<Stream>::async_fill(
-    ASIO_MOVE_ARG(ReadHandler) handler)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a ReadHandler.
-  ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
-
-  async_completion<ReadHandler,
-    void (asio::error_code, std::size_t)> init(handler);
-
-  std::size_t previous_size = storage_.size();
-  storage_.resize(storage_.capacity());
-  next_layer_.async_read_some(
-      buffer(
-        storage_.data() + previous_size,
-        storage_.size() - previous_size),
-      detail::buffered_fill_handler<ASIO_HANDLER_TYPE(
-        ReadHandler, void (asio::error_code, std::size_t))>(
-        storage_, previous_size, init.completion_handler));
-
-  return init.result.get();
-}
-
-template <typename Stream>
-template <typename MutableBufferSequence>
-std::size_t buffered_read_stream<Stream>::read_some(
-    const MutableBufferSequence& buffers)
-{
-  using asio::buffer_size;
-  if (buffer_size(buffers) == 0)
-    return 0;
-
-  if (storage_.empty())
-    this->fill();
-
-  return this->copy(buffers);
-}
-
-template <typename Stream>
-template <typename MutableBufferSequence>
-std::size_t buffered_read_stream<Stream>::read_some(
-    const MutableBufferSequence& buffers, asio::error_code& ec)
-{
-  ec = asio::error_code();
-
-  using asio::buffer_size;
-  if (buffer_size(buffers) == 0)
-    return 0;
-
-  if (storage_.empty() && !this->fill(ec))
-    return 0;
-
-  return this->copy(buffers);
-}
-
-namespace detail
-{
-  template <typename MutableBufferSequence, typename ReadHandler>
-  class buffered_read_some_handler
-  {
-  public:
-    buffered_read_some_handler(detail::buffered_stream_storage& storage,
-        const MutableBufferSequence& buffers, ReadHandler& handler)
-      : storage_(storage),
-        buffers_(buffers),
-        handler_(ASIO_MOVE_CAST(ReadHandler)(handler))
-    {
-    }
-
-#if defined(ASIO_HAS_MOVE)
-      buffered_read_some_handler(const buffered_read_some_handler& other)
-        : storage_(other.storage_),
-          buffers_(other.buffers_),
-          handler_(other.handler_)
-      {
-      }
-
-      buffered_read_some_handler(buffered_read_some_handler&& other)
-        : storage_(other.storage_),
-          buffers_(other.buffers_),
-          handler_(ASIO_MOVE_CAST(ReadHandler)(other.handler_))
-      {
-      }
-#endif // defined(ASIO_HAS_MOVE)
-
-    void operator()(const asio::error_code& ec, std::size_t)
-    {
-      if (ec || storage_.empty())
-      {
-        const std::size_t length = 0;
-        handler_(ec, length);
-      }
-      else
-      {
-        const std::size_t bytes_copied = asio::buffer_copy(
-            buffers_, storage_.data(), storage_.size());
-        storage_.consume(bytes_copied);
-        handler_(ec, bytes_copied);
-      }
-    }
-
-  //private:
-    detail::buffered_stream_storage& storage_;
-    MutableBufferSequence buffers_;
-    ReadHandler handler_;
-  };
-
-  template <typename MutableBufferSequence, typename ReadHandler>
-  inline void* asio_handler_allocate(std::size_t size,
-      buffered_read_some_handler<
-        MutableBufferSequence, ReadHandler>* this_handler)
-  {
-    return asio_handler_alloc_helpers::allocate(
-        size, this_handler->handler_);
-  }
-
-  template <typename MutableBufferSequence, typename ReadHandler>
-  inline void asio_handler_deallocate(void* pointer, std::size_t size,
-      buffered_read_some_handler<
-        MutableBufferSequence, ReadHandler>* this_handler)
-  {
-    asio_handler_alloc_helpers::deallocate(
-        pointer, size, this_handler->handler_);
-  }
-
-  template <typename MutableBufferSequence, typename ReadHandler>
-  inline bool asio_handler_is_continuation(
-      buffered_read_some_handler<
-        MutableBufferSequence, ReadHandler>* this_handler)
-  {
-    return asio_handler_cont_helpers::is_continuation(
-          this_handler->handler_);
-  }
-
-  template <typename Function, typename MutableBufferSequence,
-      typename ReadHandler>
-  inline void asio_handler_invoke(Function& function,
-      buffered_read_some_handler<
-        MutableBufferSequence, ReadHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-
-  template <typename Function, typename MutableBufferSequence,
-      typename ReadHandler>
-  inline void asio_handler_invoke(const Function& function,
-      buffered_read_some_handler<
-        MutableBufferSequence, ReadHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-} // namespace detail
-
-#if !defined(GENERATING_DOCUMENTATION)
-
-template <typename MutableBufferSequence,
-    typename ReadHandler, typename Allocator>
-struct associated_allocator<
-    detail::buffered_read_some_handler<MutableBufferSequence, ReadHandler>,
-    Allocator>
-{
-  typedef typename associated_allocator<ReadHandler, Allocator>::type type;
-
-  static type get(
-      const detail::buffered_read_some_handler<
-        MutableBufferSequence, ReadHandler>& h,
-      const Allocator& a = Allocator()) ASIO_NOEXCEPT
-  {
-    return associated_allocator<ReadHandler, Allocator>::get(h.handler_, a);
-  }
-};
-
-template <typename MutableBufferSequence,
-    typename ReadHandler, typename Executor>
-struct associated_executor<
-    detail::buffered_read_some_handler<MutableBufferSequence, ReadHandler>,
-    Executor>
-{
-  typedef typename associated_executor<ReadHandler, Executor>::type type;
-
-  static type get(
-      const detail::buffered_read_some_handler<
-        MutableBufferSequence, ReadHandler>& h,
-      const Executor& ex = Executor()) ASIO_NOEXCEPT
-  {
-    return associated_executor<ReadHandler, Executor>::get(h.handler_, ex);
-  }
-};
-
-#endif // !defined(GENERATING_DOCUMENTATION)
-
-template <typename Stream>
-template <typename MutableBufferSequence, typename ReadHandler>
-ASIO_INITFN_RESULT_TYPE(ReadHandler,
-    void (asio::error_code, std::size_t))
-buffered_read_stream<Stream>::async_read_some(
-    const MutableBufferSequence& buffers,
-    ASIO_MOVE_ARG(ReadHandler) handler)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a ReadHandler.
-  ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
-
-  async_completion<ReadHandler,
-    void (asio::error_code, std::size_t)> init(handler);
-
-  using asio::buffer_size;
-  if (buffer_size(buffers) == 0 || !storage_.empty())
-  {
-    next_layer_.async_read_some(ASIO_MUTABLE_BUFFER(0, 0),
-        detail::buffered_read_some_handler<
-          MutableBufferSequence, ASIO_HANDLER_TYPE(
-            ReadHandler, void (asio::error_code, std::size_t))>(
-            storage_, buffers, init.completion_handler));
-  }
-  else
-  {
-    this->async_fill(detail::buffered_read_some_handler<
-          MutableBufferSequence, ASIO_HANDLER_TYPE(
-            ReadHandler, void (asio::error_code, std::size_t))>(
-            storage_, buffers, init.completion_handler));
-  }
-
-  return init.result.get();
-}
-
-template <typename Stream>
-template <typename MutableBufferSequence>
-std::size_t buffered_read_stream<Stream>::peek(
-    const MutableBufferSequence& buffers)
-{
-  if (storage_.empty())
-    this->fill();
-  return this->peek_copy(buffers);
-}
-
-template <typename Stream>
-template <typename MutableBufferSequence>
-std::size_t buffered_read_stream<Stream>::peek(
-    const MutableBufferSequence& buffers, asio::error_code& ec)
-{
-  ec = asio::error_code();
-  if (storage_.empty() && !this->fill(ec))
-    return 0;
-  return this->peek_copy(buffers);
-}
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_IMPL_BUFFERED_READ_STREAM_HPP
diff --git a/lib/asio/impl/buffered_write_stream.hpp b/lib/asio/impl/buffered_write_stream.hpp
deleted file mode 100644
index bc2d823..0000000
--- a/lib/asio/impl/buffered_write_stream.hpp
+++ /dev/null
@@ -1,411 +0,0 @@
-//
-// impl/buffered_write_stream.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_IMPL_BUFFERED_WRITE_STREAM_HPP
-#define ASIO_IMPL_BUFFERED_WRITE_STREAM_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/associated_allocator.hpp"
-#include "asio/associated_executor.hpp"
-#include "asio/detail/handler_alloc_helpers.hpp"
-#include "asio/detail/handler_cont_helpers.hpp"
-#include "asio/detail/handler_invoke_helpers.hpp"
-#include "asio/detail/handler_type_requirements.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-template <typename Stream>
-std::size_t buffered_write_stream<Stream>::flush()
-{
-  std::size_t bytes_written = write(next_layer_,
-      buffer(storage_.data(), storage_.size()));
-  storage_.consume(bytes_written);
-  return bytes_written;
-}
-
-template <typename Stream>
-std::size_t buffered_write_stream<Stream>::flush(asio::error_code& ec)
-{
-  std::size_t bytes_written = write(next_layer_,
-      buffer(storage_.data(), storage_.size()),
-      transfer_all(), ec);
-  storage_.consume(bytes_written);
-  return bytes_written;
-}
-
-namespace detail
-{
-  template <typename WriteHandler>
-  class buffered_flush_handler
-  {
-  public:
-    buffered_flush_handler(detail::buffered_stream_storage& storage,
-        WriteHandler& handler)
-      : storage_(storage),
-        handler_(ASIO_MOVE_CAST(WriteHandler)(handler))
-    {
-    }
-
-#if defined(ASIO_HAS_MOVE)
-    buffered_flush_handler(const buffered_flush_handler& other)
-      : storage_(other.storage_),
-        handler_(other.handler_)
-    {
-    }
-
-    buffered_flush_handler(buffered_flush_handler&& other)
-      : storage_(other.storage_),
-        handler_(ASIO_MOVE_CAST(WriteHandler)(other.handler_))
-    {
-    }
-#endif // defined(ASIO_HAS_MOVE)
-
-    void operator()(const asio::error_code& ec,
-        const std::size_t bytes_written)
-    {
-      storage_.consume(bytes_written);
-      handler_(ec, bytes_written);
-    }
-
-  //private:
-    detail::buffered_stream_storage& storage_;
-    WriteHandler handler_;
-  };
-
-  template <typename WriteHandler>
-  inline void* asio_handler_allocate(std::size_t size,
-      buffered_flush_handler<WriteHandler>* this_handler)
-  {
-    return asio_handler_alloc_helpers::allocate(
-        size, this_handler->handler_);
-  }
-
-  template <typename WriteHandler>
-  inline void asio_handler_deallocate(void* pointer, std::size_t size,
-      buffered_flush_handler<WriteHandler>* this_handler)
-  {
-    asio_handler_alloc_helpers::deallocate(
-        pointer, size, this_handler->handler_);
-  }
-
-  template <typename WriteHandler>
-  inline bool asio_handler_is_continuation(
-      buffered_flush_handler<WriteHandler>* this_handler)
-  {
-    return asio_handler_cont_helpers::is_continuation(
-          this_handler->handler_);
-  }
-
-  template <typename Function, typename WriteHandler>
-  inline void asio_handler_invoke(Function& function,
-      buffered_flush_handler<WriteHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-
-  template <typename Function, typename WriteHandler>
-  inline void asio_handler_invoke(const Function& function,
-      buffered_flush_handler<WriteHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-} // namespace detail
-
-#if !defined(GENERATING_DOCUMENTATION)
-
-template <typename WriteHandler, typename Allocator>
-struct associated_allocator<
-    detail::buffered_flush_handler<WriteHandler>, Allocator>
-{
-  typedef typename associated_allocator<WriteHandler, Allocator>::type type;
-
-  static type get(const detail::buffered_flush_handler<WriteHandler>& h,
-      const Allocator& a = Allocator()) ASIO_NOEXCEPT
-  {
-    return associated_allocator<WriteHandler, Allocator>::get(h.handler_, a);
-  }
-};
-
-template <typename WriteHandler, typename Executor>
-struct associated_executor<
-    detail::buffered_flush_handler<WriteHandler>, Executor>
-{
-  typedef typename associated_executor<WriteHandler, Executor>::type type;
-
-  static type get(const detail::buffered_flush_handler<WriteHandler>& h,
-      const Executor& ex = Executor()) ASIO_NOEXCEPT
-  {
-    return associated_executor<WriteHandler, Executor>::get(h.handler_, ex);
-  }
-};
-
-#endif // !defined(GENERATING_DOCUMENTATION)
-
-template <typename Stream>
-template <typename WriteHandler>
-ASIO_INITFN_RESULT_TYPE(WriteHandler,
-    void (asio::error_code, std::size_t))
-buffered_write_stream<Stream>::async_flush(
-    ASIO_MOVE_ARG(WriteHandler) handler)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a WriteHandler.
-  ASIO_WRITE_HANDLER_CHECK(WriteHandler, handler) type_check;
-
-  async_completion<WriteHandler,
-    void (asio::error_code, std::size_t)> init(handler);
-
-  async_write(next_layer_, buffer(storage_.data(), storage_.size()),
-      detail::buffered_flush_handler<ASIO_HANDLER_TYPE(
-        WriteHandler, void (asio::error_code, std::size_t))>(
-        storage_, init.completion_handler));
-
-  return init.result.get();
-}
-
-template <typename Stream>
-template <typename ConstBufferSequence>
-std::size_t buffered_write_stream<Stream>::write_some(
-    const ConstBufferSequence& buffers)
-{
-  using asio::buffer_size;
-  if (buffer_size(buffers) == 0)
-    return 0;
-
-  if (storage_.size() == storage_.capacity())
-    this->flush();
-
-  return this->copy(buffers);
-}
-
-template <typename Stream>
-template <typename ConstBufferSequence>
-std::size_t buffered_write_stream<Stream>::write_some(
-    const ConstBufferSequence& buffers, asio::error_code& ec)
-{
-  ec = asio::error_code();
-
-  using asio::buffer_size;
-  if (buffer_size(buffers) == 0)
-    return 0;
-
-  if (storage_.size() == storage_.capacity() && !flush(ec))
-    return 0;
-
-  return this->copy(buffers);
-}
-
-namespace detail
-{
-  template <typename ConstBufferSequence, typename WriteHandler>
-  class buffered_write_some_handler
-  {
-  public:
-    buffered_write_some_handler(detail::buffered_stream_storage& storage,
-        const ConstBufferSequence& buffers, WriteHandler& handler)
-      : storage_(storage),
-        buffers_(buffers),
-        handler_(ASIO_MOVE_CAST(WriteHandler)(handler))
-    {
-    }
-
-#if defined(ASIO_HAS_MOVE)
-      buffered_write_some_handler(const buffered_write_some_handler& other)
-        : storage_(other.storage_),
-          buffers_(other.buffers_),
-          handler_(other.handler_)
-      {
-      }
-
-      buffered_write_some_handler(buffered_write_some_handler&& other)
-        : storage_(other.storage_),
-          buffers_(other.buffers_),
-          handler_(ASIO_MOVE_CAST(WriteHandler)(other.handler_))
-      {
-      }
-#endif // defined(ASIO_HAS_MOVE)
-
-    void operator()(const asio::error_code& ec, std::size_t)
-    {
-      if (ec)
-      {
-        const std::size_t length = 0;
-        handler_(ec, length);
-      }
-      else
-      {
-        using asio::buffer_size;
-        std::size_t orig_size = storage_.size();
-        std::size_t space_avail = storage_.capacity() - orig_size;
-        std::size_t bytes_avail = buffer_size(buffers_);
-        std::size_t length = bytes_avail < space_avail
-          ? bytes_avail : space_avail;
-        storage_.resize(orig_size + length);
-        const std::size_t bytes_copied = asio::buffer_copy(
-            storage_.data() + orig_size, buffers_, length);
-        handler_(ec, bytes_copied);
-      }
-    }
-
-  //private:
-    detail::buffered_stream_storage& storage_;
-    ConstBufferSequence buffers_;
-    WriteHandler handler_;
-  };
-
-  template <typename ConstBufferSequence, typename WriteHandler>
-  inline void* asio_handler_allocate(std::size_t size,
-      buffered_write_some_handler<
-        ConstBufferSequence, WriteHandler>* this_handler)
-  {
-    return asio_handler_alloc_helpers::allocate(
-        size, this_handler->handler_);
-  }
-
-  template <typename ConstBufferSequence, typename WriteHandler>
-  inline void asio_handler_deallocate(void* pointer, std::size_t size,
-      buffered_write_some_handler<
-        ConstBufferSequence, WriteHandler>* this_handler)
-  {
-    asio_handler_alloc_helpers::deallocate(
-        pointer, size, this_handler->handler_);
-  }
-
-  template <typename ConstBufferSequence, typename WriteHandler>
-  inline bool asio_handler_is_continuation(
-      buffered_write_some_handler<
-        ConstBufferSequence, WriteHandler>* this_handler)
-  {
-    return asio_handler_cont_helpers::is_continuation(
-          this_handler->handler_);
-  }
-
-  template <typename Function, typename ConstBufferSequence,
-      typename WriteHandler>
-  inline void asio_handler_invoke(Function& function,
-      buffered_write_some_handler<
-        ConstBufferSequence, WriteHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-
-  template <typename Function, typename ConstBufferSequence,
-      typename WriteHandler>
-  inline void asio_handler_invoke(const Function& function,
-      buffered_write_some_handler<
-        ConstBufferSequence, WriteHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-} // namespace detail
-
-#if !defined(GENERATING_DOCUMENTATION)
-
-template <typename ConstBufferSequence,
-    typename WriteHandler, typename Allocator>
-struct associated_allocator<
-    detail::buffered_write_some_handler<ConstBufferSequence, WriteHandler>,
-    Allocator>
-{
-  typedef typename associated_allocator<WriteHandler, Allocator>::type type;
-
-  static type get(
-      const detail::buffered_write_some_handler<
-        ConstBufferSequence, WriteHandler>& h,
-      const Allocator& a = Allocator()) ASIO_NOEXCEPT
-  {
-    return associated_allocator<WriteHandler, Allocator>::get(h.handler_, a);
-  }
-};
-
-template <typename ConstBufferSequence,
-    typename WriteHandler, typename Executor>
-struct associated_executor<
-    detail::buffered_write_some_handler<ConstBufferSequence, WriteHandler>,
-    Executor>
-{
-  typedef typename associated_executor<WriteHandler, Executor>::type type;
-
-  static type get(
-      const detail::buffered_write_some_handler<
-        ConstBufferSequence, WriteHandler>& h,
-      const Executor& ex = Executor()) ASIO_NOEXCEPT
-  {
-    return associated_executor<WriteHandler, Executor>::get(h.handler_, ex);
-  }
-};
-
-#endif // !defined(GENERATING_DOCUMENTATION)
-
-template <typename Stream>
-template <typename ConstBufferSequence, typename WriteHandler>
-ASIO_INITFN_RESULT_TYPE(WriteHandler,
-    void (asio::error_code, std::size_t))
-buffered_write_stream<Stream>::async_write_some(
-    const ConstBufferSequence& buffers,
-    ASIO_MOVE_ARG(WriteHandler) handler)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a WriteHandler.
-  ASIO_WRITE_HANDLER_CHECK(WriteHandler, handler) type_check;
-
-  async_completion<WriteHandler,
-    void (asio::error_code, std::size_t)> init(handler);
-
-  using asio::buffer_size;
-  if (buffer_size(buffers) == 0
-      || storage_.size() < storage_.capacity())
-  {
-    next_layer_.async_write_some(ASIO_CONST_BUFFER(0, 0),
-        detail::buffered_write_some_handler<
-          ConstBufferSequence, ASIO_HANDLER_TYPE(
-            WriteHandler, void (asio::error_code, std::size_t))>(
-            storage_, buffers, init.completion_handler));
-  }
-  else
-  {
-    this->async_flush(detail::buffered_write_some_handler<
-          ConstBufferSequence, ASIO_HANDLER_TYPE(
-            WriteHandler, void (asio::error_code, std::size_t))>(
-            storage_, buffers, init.completion_handler));
-  }
-
-  return init.result.get();
-}
-
-template <typename Stream>
-template <typename ConstBufferSequence>
-std::size_t buffered_write_stream<Stream>::copy(
-    const ConstBufferSequence& buffers)
-{
-  using asio::buffer_size;
-  std::size_t orig_size = storage_.size();
-  std::size_t space_avail = storage_.capacity() - orig_size;
-  std::size_t bytes_avail = buffer_size(buffers);
-  std::size_t length = bytes_avail < space_avail ? bytes_avail : space_avail;
-  storage_.resize(orig_size + length);
-  return asio::buffer_copy(
-      storage_.data() + orig_size, buffers, length);
-}
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_IMPL_BUFFERED_WRITE_STREAM_HPP
diff --git a/lib/asio/impl/connect.hpp b/lib/asio/impl/connect.hpp
deleted file mode 100644
index bff1913..0000000
--- a/lib/asio/impl/connect.hpp
+++ /dev/null
@@ -1,860 +0,0 @@
-//
-// impl/connect.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_IMPL_CONNECT_HPP
-#define ASIO_IMPL_CONNECT_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include <algorithm>
-#include "asio/associated_allocator.hpp"
-#include "asio/associated_executor.hpp"
-#include "asio/detail/bind_handler.hpp"
-#include "asio/detail/handler_alloc_helpers.hpp"
-#include "asio/detail/handler_cont_helpers.hpp"
-#include "asio/detail/handler_invoke_helpers.hpp"
-#include "asio/detail/handler_type_requirements.hpp"
-#include "asio/detail/throw_error.hpp"
-#include "asio/error.hpp"
-#include "asio/post.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-namespace detail
-{
-  struct default_connect_condition
-  {
-    template <typename Endpoint>
-    bool operator()(const asio::error_code&, const Endpoint&)
-    {
-      return true;
-    }
-  };
-
-  template <typename Protocol, typename Iterator>
-  inline typename Protocol::endpoint deref_connect_result(
-      Iterator iter, asio::error_code& ec)
-  {
-    return ec ? typename Protocol::endpoint() : *iter;
-  }
-
-  template <typename T, typename Iterator>
-  struct legacy_connect_condition_helper : T
-  {
-    typedef char (*fallback_func_type)(...);
-    operator fallback_func_type() const;
-  };
-
-  template <typename R, typename Arg1, typename Arg2, typename Iterator>
-  struct legacy_connect_condition_helper<R (*)(Arg1, Arg2), Iterator>
-  {
-    R operator()(Arg1, Arg2) const;
-    char operator()(...) const;
-  };
-
-  template <typename T, typename Iterator>
-  struct is_legacy_connect_condition
-  {
-    static char asio_connect_condition_check(char);
-    static char (&asio_connect_condition_check(Iterator))[2];
-
-    static const bool value =
-      sizeof(asio_connect_condition_check(
-        (*static_cast<legacy_connect_condition_helper<T, Iterator>*>(0))(
-          *static_cast<const asio::error_code*>(0),
-          *static_cast<const Iterator*>(0)))) != 1;
-  };
-
-  template <typename ConnectCondition, typename Iterator>
-  inline Iterator call_connect_condition(ConnectCondition& connect_condition,
-      const asio::error_code& ec, Iterator next, Iterator end,
-      typename enable_if<is_legacy_connect_condition<
-        ConnectCondition, Iterator>::value>::type* = 0)
-  {
-    if (next != end)
-      return connect_condition(ec, next);
-    return end;
-  }
-
-  template <typename ConnectCondition, typename Iterator>
-  inline Iterator call_connect_condition(ConnectCondition& connect_condition,
-      const asio::error_code& ec, Iterator next, Iterator end,
-      typename enable_if<!is_legacy_connect_condition<
-        ConnectCondition, Iterator>::value>::type* = 0)
-  {
-    for (;next != end; ++next)
-      if (connect_condition(ec, *next))
-        return next;
-    return end;
-  }
-}
-
-template <typename Protocol ASIO_SVC_TPARAM, typename EndpointSequence>
-typename Protocol::endpoint connect(
-    basic_socket<Protocol ASIO_SVC_TARG>& s,
-    const EndpointSequence& endpoints,
-    typename enable_if<is_endpoint_sequence<
-        EndpointSequence>::value>::type*)
-{
-  asio::error_code ec;
-  typename Protocol::endpoint result = connect(s, endpoints, ec);
-  asio::detail::throw_error(ec, "connect");
-  return result;
-}
-
-template <typename Protocol ASIO_SVC_TPARAM, typename EndpointSequence>
-typename Protocol::endpoint connect(
-    basic_socket<Protocol ASIO_SVC_TARG>& s,
-    const EndpointSequence& endpoints, asio::error_code& ec,
-    typename enable_if<is_endpoint_sequence<
-        EndpointSequence>::value>::type*)
-{
-  return detail::deref_connect_result<Protocol>(
-      connect(s, endpoints.begin(), endpoints.end(),
-        detail::default_connect_condition(), ec), ec);
-}
-
-#if !defined(ASIO_NO_DEPRECATED)
-template <typename Protocol ASIO_SVC_TPARAM, typename Iterator>
-Iterator connect(basic_socket<Protocol ASIO_SVC_TARG>& s, Iterator begin,
-    typename enable_if<!is_endpoint_sequence<Iterator>::value>::type*)
-{
-  asio::error_code ec;
-  Iterator result = connect(s, begin, ec);
-  asio::detail::throw_error(ec, "connect");
-  return result;
-}
-
-template <typename Protocol ASIO_SVC_TPARAM, typename Iterator>
-inline Iterator connect(basic_socket<Protocol ASIO_SVC_TARG>& s,
-    Iterator begin, asio::error_code& ec,
-    typename enable_if<!is_endpoint_sequence<Iterator>::value>::type*)
-{
-  return connect(s, begin, Iterator(), detail::default_connect_condition(), ec);
-}
-#endif // !defined(ASIO_NO_DEPRECATED)
-
-template <typename Protocol ASIO_SVC_TPARAM, typename Iterator>
-Iterator connect(basic_socket<Protocol ASIO_SVC_TARG>& s,
-    Iterator begin, Iterator end)
-{
-  asio::error_code ec;
-  Iterator result = connect(s, begin, end, ec);
-  asio::detail::throw_error(ec, "connect");
-  return result;
-}
-
-template <typename Protocol ASIO_SVC_TPARAM, typename Iterator>
-inline Iterator connect(basic_socket<Protocol ASIO_SVC_TARG>& s,
-    Iterator begin, Iterator end, asio::error_code& ec)
-{
-  return connect(s, begin, end, detail::default_connect_condition(), ec);
-}
-
-template <typename Protocol ASIO_SVC_TPARAM,
-    typename EndpointSequence, typename ConnectCondition>
-typename Protocol::endpoint connect(
-    basic_socket<Protocol ASIO_SVC_TARG>& s,
-    const EndpointSequence& endpoints, ConnectCondition connect_condition,
-    typename enable_if<is_endpoint_sequence<
-        EndpointSequence>::value>::type*)
-{
-  asio::error_code ec;
-  typename Protocol::endpoint result = connect(
-      s, endpoints, connect_condition, ec);
-  asio::detail::throw_error(ec, "connect");
-  return result;
-}
-
-template <typename Protocol ASIO_SVC_TPARAM,
-    typename EndpointSequence, typename ConnectCondition>
-typename Protocol::endpoint connect(
-    basic_socket<Protocol ASIO_SVC_TARG>& s,
-    const EndpointSequence& endpoints, ConnectCondition connect_condition,
-    asio::error_code& ec,
-    typename enable_if<is_endpoint_sequence<
-        EndpointSequence>::value>::type*)
-{
-  return detail::deref_connect_result<Protocol>(
-      connect(s, endpoints.begin(), endpoints.end(),
-        connect_condition, ec), ec);
-}
-
-#if !defined(ASIO_NO_DEPRECATED)
-template <typename Protocol ASIO_SVC_TPARAM,
-    typename Iterator, typename ConnectCondition>
-Iterator connect(basic_socket<Protocol ASIO_SVC_TARG>& s,
-    Iterator begin, ConnectCondition connect_condition,
-    typename enable_if<!is_endpoint_sequence<Iterator>::value>::type*)
-{
-  asio::error_code ec;
-  Iterator result = connect(s, begin, connect_condition, ec);
-  asio::detail::throw_error(ec, "connect");
-  return result;
-}
-
-template <typename Protocol ASIO_SVC_TPARAM,
-    typename Iterator, typename ConnectCondition>
-inline Iterator connect(basic_socket<Protocol ASIO_SVC_TARG>& s,
-    Iterator begin, ConnectCondition connect_condition,
-    asio::error_code& ec,
-    typename enable_if<!is_endpoint_sequence<Iterator>::value>::type*)
-{
-  return connect(s, begin, Iterator(), connect_condition, ec);
-}
-#endif // !defined(ASIO_NO_DEPRECATED)
-
-template <typename Protocol ASIO_SVC_TPARAM,
-    typename Iterator, typename ConnectCondition>
-Iterator connect(basic_socket<Protocol ASIO_SVC_TARG>& s,
-    Iterator begin, Iterator end, ConnectCondition connect_condition)
-{
-  asio::error_code ec;
-  Iterator result = connect(s, begin, end, connect_condition, ec);
-  asio::detail::throw_error(ec, "connect");
-  return result;
-}
-
-template <typename Protocol ASIO_SVC_TPARAM,
-    typename Iterator, typename ConnectCondition>
-Iterator connect(basic_socket<Protocol ASIO_SVC_TARG>& s,
-    Iterator begin, Iterator end, ConnectCondition connect_condition,
-    asio::error_code& ec)
-{
-  ec = asio::error_code();
-
-  for (Iterator iter = begin; iter != end; ++iter)
-  {
-    iter = (detail::call_connect_condition(connect_condition, ec, iter, end));
-    if (iter != end)
-    {
-      s.close(ec);
-      s.connect(*iter, ec);
-      if (!ec)
-        return iter;
-    }
-    else
-      break;
-  }
-
-  if (!ec)
-    ec = asio::error::not_found;
-
-  return end;
-}
-
-namespace detail
-{
-  // Enable the empty base class optimisation for the connect condition.
-  template <typename ConnectCondition>
-  class base_from_connect_condition
-  {
-  protected:
-    explicit base_from_connect_condition(
-        const ConnectCondition& connect_condition)
-      : connect_condition_(connect_condition)
-    {
-    }
-
-    template <typename Iterator>
-    void check_condition(const asio::error_code& ec,
-        Iterator& iter, Iterator& end)
-    {
-      iter = detail::call_connect_condition(connect_condition_, ec, iter, end);
-    }
-
-  private:
-    ConnectCondition connect_condition_;
-  };
-
-  // The default_connect_condition implementation is essentially a no-op. This
-  // template specialisation lets us eliminate all costs associated with it.
-  template <>
-  class base_from_connect_condition<default_connect_condition>
-  {
-  protected:
-    explicit base_from_connect_condition(const default_connect_condition&)
-    {
-    }
-
-    template <typename Iterator>
-    void check_condition(const asio::error_code&, Iterator&, Iterator&)
-    {
-    }
-  };
-
-  template <typename Protocol ASIO_SVC_TPARAM,
-      typename EndpointSequence, typename ConnectCondition,
-      typename RangeConnectHandler>
-  class range_connect_op : base_from_connect_condition<ConnectCondition>
-  {
-  public:
-    range_connect_op(basic_socket<Protocol ASIO_SVC_TARG>& sock,
-        const EndpointSequence& endpoints,
-        const ConnectCondition& connect_condition,
-        RangeConnectHandler& handler)
-      : base_from_connect_condition<ConnectCondition>(connect_condition),
-        socket_(sock),
-        endpoints_(endpoints),
-        index_(0),
-        start_(0),
-        handler_(ASIO_MOVE_CAST(RangeConnectHandler)(handler))
-    {
-    }
-
-#if defined(ASIO_HAS_MOVE)
-    range_connect_op(const range_connect_op& other)
-      : base_from_connect_condition<ConnectCondition>(other),
-        socket_(other.socket_),
-        endpoints_(other.endpoints_),
-        index_(other.index_),
-        start_(other.start_),
-        handler_(other.handler_)
-    {
-    }
-
-    range_connect_op(range_connect_op&& other)
-      : base_from_connect_condition<ConnectCondition>(other),
-        socket_(other.socket_),
-        endpoints_(other.endpoints_),
-        index_(other.index_),
-        start_(other.start_),
-        handler_(ASIO_MOVE_CAST(RangeConnectHandler)(other.handler_))
-    {
-    }
-#endif // defined(ASIO_HAS_MOVE)
-
-    void operator()(asio::error_code ec, int start = 0)
-    {
-      typename EndpointSequence::const_iterator begin = endpoints_.begin();
-      typename EndpointSequence::const_iterator iter = begin;
-      std::advance(iter, index_);
-      typename EndpointSequence::const_iterator end = endpoints_.end();
-
-      switch (start_ = start)
-      {
-        case 1:
-        for (;;)
-        {
-          this->check_condition(ec, iter, end);
-          index_ = std::distance(begin, iter);
-
-          if (iter != end)
-          {
-            socket_.close(ec);
-            socket_.async_connect(*iter,
-                ASIO_MOVE_CAST(range_connect_op)(*this));
-            return;
-          }
-
-          if (start)
-          {
-            ec = asio::error::not_found;
-            asio::post(socket_.get_executor(),
-                detail::bind_handler(
-                  ASIO_MOVE_CAST(range_connect_op)(*this), ec));
-            return;
-          }
-
-          default:
-
-          if (iter == end)
-            break;
-
-          if (!socket_.is_open())
-          {
-            ec = asio::error::operation_aborted;
-            break;
-          }
-
-          if (!ec)
-            break;
-
-          ++iter;
-          ++index_;
-        }
-
-        handler_(static_cast<const asio::error_code&>(ec),
-            static_cast<const typename Protocol::endpoint&>(
-              ec || iter == end ? typename Protocol::endpoint() : *iter));
-      }
-    }
-
-  //private:
-    basic_socket<Protocol ASIO_SVC_TARG>& socket_;
-    EndpointSequence endpoints_;
-    std::size_t index_;
-    int start_;
-    RangeConnectHandler handler_;
-  };
-
-  template <typename Protocol ASIO_SVC_TPARAM,
-      typename EndpointSequence, typename ConnectCondition,
-      typename RangeConnectHandler>
-  inline void* asio_handler_allocate(std::size_t size,
-      range_connect_op<Protocol ASIO_SVC_TARG, EndpointSequence,
-        ConnectCondition, RangeConnectHandler>* this_handler)
-  {
-    return asio_handler_alloc_helpers::allocate(
-        size, this_handler->handler_);
-  }
-
-  template <typename Protocol ASIO_SVC_TPARAM,
-      typename EndpointSequence, typename ConnectCondition,
-      typename RangeConnectHandler>
-  inline void asio_handler_deallocate(void* pointer, std::size_t size,
-      range_connect_op<Protocol ASIO_SVC_TARG, EndpointSequence,
-        ConnectCondition, RangeConnectHandler>* this_handler)
-  {
-    asio_handler_alloc_helpers::deallocate(
-        pointer, size, this_handler->handler_);
-  }
-
-  template <typename Protocol ASIO_SVC_TPARAM,
-      typename EndpointSequence, typename ConnectCondition,
-      typename RangeConnectHandler>
-  inline bool asio_handler_is_continuation(
-      range_connect_op<Protocol ASIO_SVC_TARG, EndpointSequence,
-        ConnectCondition, RangeConnectHandler>* this_handler)
-  {
-    return asio_handler_cont_helpers::is_continuation(
-        this_handler->handler_);
-  }
-
-  template <typename Function, typename Protocol
-      ASIO_SVC_TPARAM, typename EndpointSequence,
-      typename ConnectCondition, typename RangeConnectHandler>
-  inline void asio_handler_invoke(Function& function,
-      range_connect_op<Protocol ASIO_SVC_TARG, EndpointSequence,
-        ConnectCondition, RangeConnectHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-
-  template <typename Function, typename Protocol
-      ASIO_SVC_TPARAM, typename EndpointSequence,
-      typename ConnectCondition, typename RangeConnectHandler>
-  inline void asio_handler_invoke(const Function& function,
-      range_connect_op<Protocol ASIO_SVC_TARG, EndpointSequence,
-        ConnectCondition, RangeConnectHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-
-  template <typename Protocol ASIO_SVC_TPARAM, typename Iterator,
-      typename ConnectCondition, typename IteratorConnectHandler>
-  class iterator_connect_op : base_from_connect_condition<ConnectCondition>
-  {
-  public:
-    iterator_connect_op(basic_socket<Protocol ASIO_SVC_TARG>& sock,
-        const Iterator& begin, const Iterator& end,
-        const ConnectCondition& connect_condition,
-        IteratorConnectHandler& handler)
-      : base_from_connect_condition<ConnectCondition>(connect_condition),
-        socket_(sock),
-        iter_(begin),
-        end_(end),
-        start_(0),
-        handler_(ASIO_MOVE_CAST(IteratorConnectHandler)(handler))
-    {
-    }
-
-#if defined(ASIO_HAS_MOVE)
-    iterator_connect_op(const iterator_connect_op& other)
-      : base_from_connect_condition<ConnectCondition>(other),
-        socket_(other.socket_),
-        iter_(other.iter_),
-        end_(other.end_),
-        start_(other.start_),
-        handler_(other.handler_)
-    {
-    }
-
-    iterator_connect_op(iterator_connect_op&& other)
-      : base_from_connect_condition<ConnectCondition>(other),
-        socket_(other.socket_),
-        iter_(other.iter_),
-        end_(other.end_),
-        start_(other.start_),
-        handler_(ASIO_MOVE_CAST(IteratorConnectHandler)(other.handler_))
-    {
-    }
-#endif // defined(ASIO_HAS_MOVE)
-
-    void operator()(asio::error_code ec, int start = 0)
-    {
-      switch (start_ = start)
-      {
-        case 1:
-        for (;;)
-        {
-          this->check_condition(ec, iter_, end_);
-
-          if (iter_ != end_)
-          {
-            socket_.close(ec);
-            socket_.async_connect(*iter_,
-                ASIO_MOVE_CAST(iterator_connect_op)(*this));
-            return;
-          }
-
-          if (start)
-          {
-            ec = asio::error::not_found;
-            asio::post(socket_.get_executor(),
-                detail::bind_handler(
-                  ASIO_MOVE_CAST(iterator_connect_op)(*this), ec));
-            return;
-          }
-
-          default:
-
-          if (iter_ == end_)
-            break;
-
-          if (!socket_.is_open())
-          {
-            ec = asio::error::operation_aborted;
-            break;
-          }
-
-          if (!ec)
-            break;
-
-          ++iter_;
-        }
-
-        handler_(static_cast<const asio::error_code&>(ec),
-            static_cast<const Iterator&>(iter_));
-      }
-    }
-
-  //private:
-    basic_socket<Protocol ASIO_SVC_TARG>& socket_;
-    Iterator iter_;
-    Iterator end_;
-    int start_;
-    IteratorConnectHandler handler_;
-  };
-
-  template <typename Protocol ASIO_SVC_TPARAM, typename Iterator,
-      typename ConnectCondition, typename IteratorConnectHandler>
-  inline void* asio_handler_allocate(std::size_t size,
-      iterator_connect_op<Protocol ASIO_SVC_TARG, Iterator,
-        ConnectCondition, IteratorConnectHandler>* this_handler)
-  {
-    return asio_handler_alloc_helpers::allocate(
-        size, this_handler->handler_);
-  }
-
-  template <typename Protocol ASIO_SVC_TPARAM, typename Iterator,
-      typename ConnectCondition, typename IteratorConnectHandler>
-  inline void asio_handler_deallocate(void* pointer, std::size_t size,
-      iterator_connect_op<Protocol ASIO_SVC_TARG, Iterator,
-        ConnectCondition, IteratorConnectHandler>* this_handler)
-  {
-    asio_handler_alloc_helpers::deallocate(
-        pointer, size, this_handler->handler_);
-  }
-
-  template <typename Protocol ASIO_SVC_TPARAM, typename Iterator,
-      typename ConnectCondition, typename IteratorConnectHandler>
-  inline bool asio_handler_is_continuation(
-      iterator_connect_op<Protocol ASIO_SVC_TARG, Iterator,
-        ConnectCondition, IteratorConnectHandler>* this_handler)
-  {
-    return asio_handler_cont_helpers::is_continuation(
-        this_handler->handler_);
-  }
-
-  template <typename Function, typename Protocol
-      ASIO_SVC_TPARAM, typename Iterator,
-      typename ConnectCondition, typename IteratorConnectHandler>
-  inline void asio_handler_invoke(Function& function,
-      iterator_connect_op<Protocol ASIO_SVC_TARG, Iterator,
-        ConnectCondition, IteratorConnectHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-
-  template <typename Function, typename Protocol
-      ASIO_SVC_TPARAM, typename Iterator,
-      typename ConnectCondition, typename IteratorConnectHandler>
-  inline void asio_handler_invoke(const Function& function,
-      iterator_connect_op<Protocol ASIO_SVC_TARG, Iterator,
-        ConnectCondition, IteratorConnectHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-} // namespace detail
-
-#if !defined(GENERATING_DOCUMENTATION)
-
-template <typename Protocol ASIO_SVC_TPARAM,
-    typename EndpointSequence, typename ConnectCondition,
-    typename RangeConnectHandler, typename Allocator>
-struct associated_allocator<
-    detail::range_connect_op<Protocol ASIO_SVC_TARG,
-      EndpointSequence, ConnectCondition, RangeConnectHandler>,
-    Allocator>
-{
-  typedef typename associated_allocator<
-      RangeConnectHandler, Allocator>::type type;
-
-  static type get(
-      const detail::range_connect_op<Protocol ASIO_SVC_TARG,
-        EndpointSequence, ConnectCondition, RangeConnectHandler>& h,
-      const Allocator& a = Allocator()) ASIO_NOEXCEPT
-  {
-    return associated_allocator<RangeConnectHandler,
-        Allocator>::get(h.handler_, a);
-  }
-};
-
-template <typename Protocol ASIO_SVC_TPARAM,
-    typename EndpointSequence, typename ConnectCondition,
-    typename RangeConnectHandler, typename Executor>
-struct associated_executor<
-    detail::range_connect_op<Protocol ASIO_SVC_TARG,
-      EndpointSequence, ConnectCondition, RangeConnectHandler>,
-    Executor>
-{
-  typedef typename associated_executor<
-      RangeConnectHandler, Executor>::type type;
-
-  static type get(
-      const detail::range_connect_op<Protocol ASIO_SVC_TARG,
-        EndpointSequence, ConnectCondition, RangeConnectHandler>& h,
-      const Executor& ex = Executor()) ASIO_NOEXCEPT
-  {
-    return associated_executor<RangeConnectHandler,
-        Executor>::get(h.handler_, ex);
-  }
-};
-
-template <typename Protocol ASIO_SVC_TPARAM,
-    typename Iterator, typename ConnectCondition,
-    typename IteratorConnectHandler, typename Allocator>
-struct associated_allocator<
-    detail::iterator_connect_op<Protocol ASIO_SVC_TARG, Iterator,
-      ConnectCondition, IteratorConnectHandler>,
-    Allocator>
-{
-  typedef typename associated_allocator<
-      IteratorConnectHandler, Allocator>::type type;
-
-  static type get(
-      const detail::iterator_connect_op<Protocol ASIO_SVC_TARG,
-        Iterator, ConnectCondition, IteratorConnectHandler>& h,
-      const Allocator& a = Allocator()) ASIO_NOEXCEPT
-  {
-    return associated_allocator<IteratorConnectHandler,
-        Allocator>::get(h.handler_, a);
-  }
-};
-
-template <typename Protocol ASIO_SVC_TPARAM,
-    typename Iterator, typename ConnectCondition,
-    typename IteratorConnectHandler, typename Executor>
-struct associated_executor<
-    detail::iterator_connect_op<Protocol ASIO_SVC_TARG, Iterator,
-      ConnectCondition, IteratorConnectHandler>,
-    Executor>
-{
-  typedef typename associated_executor<
-      IteratorConnectHandler, Executor>::type type;
-
-  static type get(
-      const detail::iterator_connect_op<Protocol ASIO_SVC_TARG,
-        Iterator, ConnectCondition, IteratorConnectHandler>& h,
-      const Executor& ex = Executor()) ASIO_NOEXCEPT
-  {
-    return associated_executor<IteratorConnectHandler,
-        Executor>::get(h.handler_, ex);
-  }
-};
-
-#endif // !defined(GENERATING_DOCUMENTATION)
-
-template <typename Protocol ASIO_SVC_TPARAM,
-    typename EndpointSequence, typename RangeConnectHandler>
-inline ASIO_INITFN_RESULT_TYPE(RangeConnectHandler,
-    void (asio::error_code, typename Protocol::endpoint))
-async_connect(basic_socket<Protocol ASIO_SVC_TARG>& s,
-    const EndpointSequence& endpoints,
-    ASIO_MOVE_ARG(RangeConnectHandler) handler,
-    typename enable_if<is_endpoint_sequence<
-        EndpointSequence>::value>::type*)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a RangeConnectHandler.
-  ASIO_RANGE_CONNECT_HANDLER_CHECK(
-      RangeConnectHandler, handler, typename Protocol::endpoint) type_check;
-
-  async_completion<RangeConnectHandler,
-    void (asio::error_code, typename Protocol::endpoint)>
-      init(handler);
-
-  detail::range_connect_op<Protocol ASIO_SVC_TARG, EndpointSequence,
-    detail::default_connect_condition,
-      ASIO_HANDLER_TYPE(RangeConnectHandler,
-        void (asio::error_code, typename Protocol::endpoint))>(s,
-          endpoints, detail::default_connect_condition(),
-            init.completion_handler)(asio::error_code(), 1);
-
-  return init.result.get();
-}
-
-#if !defined(ASIO_NO_DEPRECATED)
-template <typename Protocol ASIO_SVC_TPARAM,
-    typename Iterator, typename IteratorConnectHandler>
-inline ASIO_INITFN_RESULT_TYPE(IteratorConnectHandler,
-    void (asio::error_code, Iterator))
-async_connect(basic_socket<Protocol ASIO_SVC_TARG>& s,
-    Iterator begin, ASIO_MOVE_ARG(IteratorConnectHandler) handler,
-    typename enable_if<!is_endpoint_sequence<Iterator>::value>::type*)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a IteratorConnectHandler.
-  ASIO_ITERATOR_CONNECT_HANDLER_CHECK(
-      IteratorConnectHandler, handler, Iterator) type_check;
-
-  async_completion<IteratorConnectHandler,
-    void (asio::error_code, Iterator)> init(handler);
-
-  detail::iterator_connect_op<Protocol ASIO_SVC_TARG, Iterator,
-    detail::default_connect_condition, ASIO_HANDLER_TYPE(
-      IteratorConnectHandler, void (asio::error_code, Iterator))>(s,
-        begin, Iterator(), detail::default_connect_condition(),
-          init.completion_handler)(asio::error_code(), 1);
-
-  return init.result.get();
-}
-#endif // !defined(ASIO_NO_DEPRECATED)
-
-template <typename Protocol ASIO_SVC_TPARAM,
-    typename Iterator, typename IteratorConnectHandler>
-inline ASIO_INITFN_RESULT_TYPE(IteratorConnectHandler,
-    void (asio::error_code, Iterator))
-async_connect(basic_socket<Protocol ASIO_SVC_TARG>& s,
-    Iterator begin, Iterator end,
-    ASIO_MOVE_ARG(IteratorConnectHandler) handler)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a IteratorConnectHandler.
-  ASIO_ITERATOR_CONNECT_HANDLER_CHECK(
-      IteratorConnectHandler, handler, Iterator) type_check;
-
-  async_completion<IteratorConnectHandler,
-    void (asio::error_code, Iterator)> init(handler);
-
-  detail::iterator_connect_op<Protocol ASIO_SVC_TARG, Iterator,
-    detail::default_connect_condition, ASIO_HANDLER_TYPE(
-      IteratorConnectHandler, void (asio::error_code, Iterator))>(s,
-        begin, end, detail::default_connect_condition(),
-          init.completion_handler)(asio::error_code(), 1);
-
-  return init.result.get();
-}
-
-template <typename Protocol ASIO_SVC_TPARAM, typename EndpointSequence,
-    typename ConnectCondition, typename RangeConnectHandler>
-inline ASIO_INITFN_RESULT_TYPE(RangeConnectHandler,
-    void (asio::error_code, typename Protocol::endpoint))
-async_connect(basic_socket<Protocol ASIO_SVC_TARG>& s,
-    const EndpointSequence& endpoints, ConnectCondition connect_condition,
-    ASIO_MOVE_ARG(RangeConnectHandler) handler,
-    typename enable_if<is_endpoint_sequence<
-        EndpointSequence>::value>::type*)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a RangeConnectHandler.
-  ASIO_RANGE_CONNECT_HANDLER_CHECK(
-      RangeConnectHandler, handler, typename Protocol::endpoint) type_check;
-
-  async_completion<RangeConnectHandler,
-    void (asio::error_code, typename Protocol::endpoint)>
-      init(handler);
-
-  detail::range_connect_op<Protocol ASIO_SVC_TARG, EndpointSequence,
-    ConnectCondition, ASIO_HANDLER_TYPE(RangeConnectHandler,
-      void (asio::error_code, typename Protocol::endpoint))>(s,
-        endpoints, connect_condition, init.completion_handler)(
-          asio::error_code(), 1);
-
-  return init.result.get();
-}
-
-#if !defined(ASIO_NO_DEPRECATED)
-template <typename Protocol ASIO_SVC_TPARAM, typename Iterator,
-    typename ConnectCondition, typename IteratorConnectHandler>
-inline ASIO_INITFN_RESULT_TYPE(IteratorConnectHandler,
-    void (asio::error_code, Iterator))
-async_connect(basic_socket<Protocol ASIO_SVC_TARG>& s,
-    Iterator begin, ConnectCondition connect_condition,
-    ASIO_MOVE_ARG(IteratorConnectHandler) handler,
-    typename enable_if<!is_endpoint_sequence<Iterator>::value>::type*)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a IteratorConnectHandler.
-  ASIO_ITERATOR_CONNECT_HANDLER_CHECK(
-      IteratorConnectHandler, handler, Iterator) type_check;
-
-  async_completion<IteratorConnectHandler,
-    void (asio::error_code, Iterator)> init(handler);
-
-  detail::iterator_connect_op<Protocol ASIO_SVC_TARG, Iterator,
-    ConnectCondition, ASIO_HANDLER_TYPE(
-      IteratorConnectHandler, void (asio::error_code, Iterator))>(s,
-        begin, Iterator(), connect_condition, init.completion_handler)(
-          asio::error_code(), 1);
-
-  return init.result.get();
-}
-#endif // !defined(ASIO_NO_DEPRECATED)
-
-template <typename Protocol ASIO_SVC_TPARAM, typename Iterator,
-    typename ConnectCondition, typename IteratorConnectHandler>
-inline ASIO_INITFN_RESULT_TYPE(IteratorConnectHandler,
-    void (asio::error_code, Iterator))
-async_connect(basic_socket<Protocol ASIO_SVC_TARG>& s,
-    Iterator begin, Iterator end, ConnectCondition connect_condition,
-    ASIO_MOVE_ARG(IteratorConnectHandler) handler)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a IteratorConnectHandler.
-  ASIO_ITERATOR_CONNECT_HANDLER_CHECK(
-      IteratorConnectHandler, handler, Iterator) type_check;
-
-  async_completion<IteratorConnectHandler,
-    void (asio::error_code, Iterator)> init(handler);
-
-  detail::iterator_connect_op<Protocol ASIO_SVC_TARG, Iterator,
-    ConnectCondition, ASIO_HANDLER_TYPE(
-      IteratorConnectHandler, void (asio::error_code, Iterator))>(s,
-        begin, end, connect_condition, init.completion_handler)(
-          asio::error_code(), 1);
-
-  return init.result.get();
-}
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_IMPL_CONNECT_HPP
diff --git a/lib/asio/impl/defer.hpp b/lib/asio/impl/defer.hpp
deleted file mode 100644
index a27df0f..0000000
--- a/lib/asio/impl/defer.hpp
+++ /dev/null
@@ -1,77 +0,0 @@
-//
-// impl/defer.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_IMPL_DEFER_HPP
-#define ASIO_IMPL_DEFER_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include "asio/associated_allocator.hpp"
-#include "asio/associated_executor.hpp"
-#include "asio/detail/work_dispatcher.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-template <typename CompletionToken>
-ASIO_INITFN_RESULT_TYPE(CompletionToken, void()) defer(
-    ASIO_MOVE_ARG(CompletionToken) token)
-{
-  typedef ASIO_HANDLER_TYPE(CompletionToken, void()) handler;
-
-  async_completion<CompletionToken, void()> init(token);
-
-  typename associated_executor<handler>::type ex(
-      (get_associated_executor)(init.completion_handler));
-
-  typename associated_allocator<handler>::type alloc(
-      (get_associated_allocator)(init.completion_handler));
-
-  ex.defer(ASIO_MOVE_CAST(handler)(init.completion_handler), alloc);
-
-  return init.result.get();
-}
-
-template <typename Executor, typename CompletionToken>
-ASIO_INITFN_RESULT_TYPE(CompletionToken, void()) defer(
-    const Executor& ex, ASIO_MOVE_ARG(CompletionToken) token,
-    typename enable_if<is_executor<Executor>::value>::type*)
-{
-  typedef ASIO_HANDLER_TYPE(CompletionToken, void()) handler;
-
-  async_completion<CompletionToken, void()> init(token);
-
-  typename associated_allocator<handler>::type alloc(
-      (get_associated_allocator)(init.completion_handler));
-
-  ex.defer(detail::work_dispatcher<handler>(init.completion_handler), alloc);
-
-  return init.result.get();
-}
-
-template <typename ExecutionContext, typename CompletionToken>
-inline ASIO_INITFN_RESULT_TYPE(CompletionToken, void()) defer(
-    ExecutionContext& ctx, ASIO_MOVE_ARG(CompletionToken) token,
-    typename enable_if<is_convertible<
-      ExecutionContext&, execution_context&>::value>::type*)
-{
-  return (defer)(ctx.get_executor(),
-      ASIO_MOVE_CAST(CompletionToken)(token));
-}
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_IMPL_DEFER_HPP
diff --git a/lib/asio/impl/dispatch.hpp b/lib/asio/impl/dispatch.hpp
deleted file mode 100644
index 4e11c6b..0000000
--- a/lib/asio/impl/dispatch.hpp
+++ /dev/null
@@ -1,78 +0,0 @@
-//
-// impl/dispatch.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_IMPL_DISPATCH_HPP
-#define ASIO_IMPL_DISPATCH_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include "asio/associated_allocator.hpp"
-#include "asio/associated_executor.hpp"
-#include "asio/detail/work_dispatcher.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-template <typename CompletionToken>
-ASIO_INITFN_RESULT_TYPE(CompletionToken, void()) dispatch(
-    ASIO_MOVE_ARG(CompletionToken) token)
-{
-  typedef ASIO_HANDLER_TYPE(CompletionToken, void()) handler;
-
-  async_completion<CompletionToken, void()> init(token);
-
-  typename associated_executor<handler>::type ex(
-      (get_associated_executor)(init.completion_handler));
-
-  typename associated_allocator<handler>::type alloc(
-      (get_associated_allocator)(init.completion_handler));
-
-  ex.dispatch(ASIO_MOVE_CAST(handler)(init.completion_handler), alloc);
-
-  return init.result.get();
-}
-
-template <typename Executor, typename CompletionToken>
-ASIO_INITFN_RESULT_TYPE(CompletionToken, void()) dispatch(
-    const Executor& ex, ASIO_MOVE_ARG(CompletionToken) token,
-    typename enable_if<is_executor<Executor>::value>::type*)
-{
-  typedef ASIO_HANDLER_TYPE(CompletionToken, void()) handler;
-
-  async_completion<CompletionToken, void()> init(token);
-
-  typename associated_allocator<handler>::type alloc(
-      (get_associated_allocator)(init.completion_handler));
-
-  ex.dispatch(detail::work_dispatcher<handler>(
-        init.completion_handler), alloc);
-
-  return init.result.get();
-}
-
-template <typename ExecutionContext, typename CompletionToken>
-inline ASIO_INITFN_RESULT_TYPE(CompletionToken, void()) dispatch(
-    ExecutionContext& ctx, ASIO_MOVE_ARG(CompletionToken) token,
-    typename enable_if<is_convertible<
-      ExecutionContext&, execution_context&>::value>::type*)
-{
-  return (dispatch)(ctx.get_executor(),
-      ASIO_MOVE_CAST(CompletionToken)(token));
-}
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_IMPL_DISPATCH_HPP
diff --git a/lib/asio/impl/error.ipp b/lib/asio/impl/error.ipp
deleted file mode 100644
index 6b1f33a..0000000
--- a/lib/asio/impl/error.ipp
+++ /dev/null
@@ -1,128 +0,0 @@
-//
-// impl/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_IMPL_ERROR_IPP
-#define ASIO_IMPL_ERROR_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include <string>
-#include "asio/error.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace error {
-
-#if !defined(ASIO_WINDOWS) && !defined(__CYGWIN__)
-
-namespace detail {
-
-class netdb_category : public asio::error_category
-{
-public:
-  const char* name() const ASIO_ERROR_CATEGORY_NOEXCEPT
-  {
-    return "asio.netdb";
-  }
-
-  std::string message(int value) const
-  {
-    if (value == error::host_not_found)
-      return "Host not found (authoritative)";
-    if (value == error::host_not_found_try_again)
-      return "Host not found (non-authoritative), try again later";
-    if (value == error::no_data)
-      return "The query is valid, but it does not have associated data";
-    if (value == error::no_recovery)
-      return "A non-recoverable error occurred during database lookup";
-    return "asio.netdb error";
-  }
-};
-
-} // namespace detail
-
-const asio::error_category& get_netdb_category()
-{
-  static detail::netdb_category instance;
-  return instance;
-}
-
-namespace detail {
-
-class addrinfo_category : public asio::error_category
-{
-public:
-  const char* name() const ASIO_ERROR_CATEGORY_NOEXCEPT
-  {
-    return "asio.addrinfo";
-  }
-
-  std::string message(int value) const
-  {
-    if (value == error::service_not_found)
-      return "Service not found";
-    if (value == error::socket_type_not_supported)
-      return "Socket type not supported";
-    return "asio.addrinfo error";
-  }
-};
-
-} // namespace detail
-
-const asio::error_category& get_addrinfo_category()
-{
-  static detail::addrinfo_category instance;
-  return instance;
-}
-
-#endif // !defined(ASIO_WINDOWS) && !defined(__CYGWIN__)
-
-namespace detail {
-
-class misc_category : public asio::error_category
-{
-public:
-  const char* name() const ASIO_ERROR_CATEGORY_NOEXCEPT
-  {
-    return "asio.misc";
-  }
-
-  std::string message(int value) const
-  {
-    if (value == error::already_open)
-      return "Already open";
-    if (value == error::eof)
-      return "End of file";
-    if (value == error::not_found)
-      return "Element not found";
-    if (value == error::fd_set_failure)
-      return "The descriptor does not fit into the select call's fd_set";
-    return "asio.misc error";
-  }
-};
-
-} // namespace detail
-
-const asio::error_category& get_misc_category()
-{
-  static detail::misc_category instance;
-  return instance;
-}
-
-} // namespace error
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_IMPL_ERROR_IPP
diff --git a/lib/asio/impl/error_code.ipp b/lib/asio/impl/error_code.ipp
deleted file mode 100644
index 0c8a827..0000000
--- a/lib/asio/impl/error_code.ipp
+++ /dev/null
@@ -1,206 +0,0 @@
-//
-// impl/error_code.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_IMPL_ERROR_CODE_IPP
-#define ASIO_IMPL_ERROR_CODE_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 <winerror.h>
-#elif defined(ASIO_WINDOWS_RUNTIME)
-# include <windows.h>
-#else
-# include <cerrno>
-# include <cstring>
-# include <string>
-#endif
-#include "asio/detail/local_free_on_block_exit.hpp"
-#include "asio/detail/socket_types.hpp"
-#include "asio/error_code.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-class system_category : public error_category
-{
-public:
-  const char* name() const ASIO_ERROR_CATEGORY_NOEXCEPT
-  {
-    return "asio.system";
-  }
-
-  std::string message(int value) const
-  {
-#if defined(ASIO_WINDOWS_RUNTIME) || defined(ASIO_WINDOWS_APP)
-    std::wstring wmsg(128, wchar_t());
-    for (;;)
-    {
-      DWORD wlength = ::FormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM
-          | FORMAT_MESSAGE_IGNORE_INSERTS, 0, value,
-          MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
-          &wmsg[0], static_cast<DWORD>(wmsg.size()), 0);
-      if (wlength == 0 && ::GetLastError() == ERROR_INSUFFICIENT_BUFFER)
-      {
-        wmsg.resize(wmsg.size() + wmsg.size() / 2);
-        continue;
-      }
-      if (wlength && wmsg[wlength - 1] == '\n')
-        --wlength;
-      if (wlength && wmsg[wlength - 1] == '\r')
-        --wlength;
-      if (wlength)
-      {
-        std::string msg(wlength * 2, char());
-        int length = ::WideCharToMultiByte(CP_ACP, 0,
-            wmsg.c_str(), static_cast<int>(wlength),
-            &msg[0], static_cast<int>(wlength * 2), 0, 0);
-        if (length <= 0)
-          return "asio.system error";
-        msg.resize(static_cast<std::size_t>(length));
-        return msg;
-      }
-      else
-        return "asio.system error";
-    }
-#elif defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-    char* msg = 0;
-    DWORD length = ::FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER
-        | FORMAT_MESSAGE_FROM_SYSTEM
-        | FORMAT_MESSAGE_IGNORE_INSERTS, 0, value,
-        MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (char*)&msg, 0, 0);
-    detail::local_free_on_block_exit local_free_obj(msg);
-    if (length && msg[length - 1] == '\n')
-      msg[--length] = '\0';
-    if (length && msg[length - 1] == '\r')
-      msg[--length] = '\0';
-    if (length)
-      return msg;
-    else
-      return "asio.system error";
-#else // defined(ASIO_WINDOWS_DESKTOP) || defined(__CYGWIN__)
-#if !defined(__sun)
-    if (value == ECANCELED)
-      return "Operation aborted.";
-#endif // !defined(__sun)
-#if defined(__sun) || defined(__QNX__) || defined(__SYMBIAN32__)
-    using namespace std;
-    return strerror(value);
-#else
-    char buf[256] = "";
-    using namespace std;
-    return strerror_result(strerror_r(value, buf, sizeof(buf)), buf);
-#endif
-#endif // defined(ASIO_WINDOWS_DESKTOP) || defined(__CYGWIN__)
-  }
-
-#if defined(ASIO_HAS_STD_ERROR_CODE)
-  std::error_condition default_error_condition(
-      int ev) const ASIO_ERROR_CATEGORY_NOEXCEPT
-  {
-    switch (ev)
-    {
-    case access_denied:
-      return std::errc::permission_denied;
-    case address_family_not_supported:
-      return std::errc::address_family_not_supported;
-    case address_in_use:
-      return std::errc::address_in_use;
-    case already_connected:
-      return std::errc::already_connected;
-    case already_started:
-      return std::errc::connection_already_in_progress;
-    case broken_pipe:
-      return std::errc::broken_pipe;
-    case connection_aborted:
-      return std::errc::connection_aborted;
-    case connection_refused:
-      return std::errc::connection_refused;
-    case connection_reset:
-      return std::errc::connection_reset;
-    case bad_descriptor:
-      return std::errc::bad_file_descriptor;
-    case fault:
-      return std::errc::bad_address;
-    case host_unreachable:
-      return std::errc::host_unreachable;
-    case in_progress:
-      return std::errc::operation_in_progress;
-    case interrupted:
-      return std::errc::interrupted;
-    case invalid_argument:
-      return std::errc::invalid_argument;
-    case message_size:
-      return std::errc::message_size;
-    case name_too_long:
-      return std::errc::filename_too_long;
-    case network_down:
-      return std::errc::network_down;
-    case network_reset:
-      return std::errc::network_reset;
-    case network_unreachable:
-      return std::errc::network_unreachable;
-    case no_descriptors:
-      return std::errc::too_many_files_open;
-    case no_buffer_space:
-      return std::errc::no_buffer_space;
-    case no_memory:
-      return std::errc::not_enough_memory;
-    case no_permission:
-      return std::errc::operation_not_permitted;
-    case no_protocol_option:
-      return std::errc::no_protocol_option;
-    case no_such_device:
-      return std::errc::no_such_device;
-    case not_connected:
-      return std::errc::not_connected;
-    case not_socket:
-      return std::errc::not_a_socket;
-    case operation_aborted:
-      return std::errc::operation_canceled;
-    case operation_not_supported:
-      return std::errc::operation_not_supported;
-    case shut_down:
-      return std::make_error_condition(ev, *this);
-    case timed_out:
-      return std::errc::timed_out;
-    case try_again:
-      return std::errc::resource_unavailable_try_again;
-    case would_block:
-      return std::errc::operation_would_block;
-    default:
-      return std::make_error_condition(ev, *this);
-  }
-#endif // defined(ASIO_HAS_STD_ERROR_CODE)
-
-private:
-  // Helper function to adapt the result from glibc's variant of strerror_r.
-  static const char* strerror_result(int, const char* s) { return s; }
-  static const char* strerror_result(const char* s, const char*) { return s; }
-};
-
-} // namespace detail
-
-const error_category& system_category()
-{
-  static detail::system_category instance;
-  return instance;
-}
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_IMPL_ERROR_CODE_IPP
diff --git a/lib/asio/impl/execution_context.hpp b/lib/asio/impl/execution_context.hpp
deleted file mode 100644
index 3d1e457..0000000
--- a/lib/asio/impl/execution_context.hpp
+++ /dev/null
@@ -1,107 +0,0 @@
-//
-// impl/execution_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_IMPL_EXECUTION_CONTEXT_HPP
-#define ASIO_IMPL_EXECUTION_CONTEXT_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/handler_type_requirements.hpp"
-#include "asio/detail/scoped_ptr.hpp"
-#include "asio/detail/service_registry.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-template <typename Service>
-inline Service& use_service(execution_context& e)
-{
-  // Check that Service meets the necessary type requirements.
-  (void)static_cast<execution_context::service*>(static_cast<Service*>(0));
-
-  return e.service_registry_->template use_service<Service>();
-}
-
-#if !defined(GENERATING_DOCUMENTATION)
-# if defined(ASIO_HAS_VARIADIC_TEMPLATES)
-
-template <typename Service, typename... Args>
-Service& make_service(execution_context& e, ASIO_MOVE_ARG(Args)... args)
-{
-  detail::scoped_ptr<Service> svc(
-      new Service(e, ASIO_MOVE_CAST(Args)(args)...));
-  e.service_registry_->template add_service<Service>(svc.get());
-  Service& result = *svc;
-  svc.release();
-  return result;
-}
-
-# else // defined(ASIO_HAS_VARIADIC_TEMPLATES)
-
-template <typename Service>
-Service& make_service(execution_context& e)
-{
-  detail::scoped_ptr<Service> svc(new Service(e));
-  e.service_registry_->template add_service<Service>(svc.get());
-  Service& result = *svc;
-  svc.release();
-  return result;
-}
-
-#define ASIO_PRIVATE_MAKE_SERVICE_DEF(n) \
-  template <typename Service, ASIO_VARIADIC_TPARAMS(n)> \
-  Service& make_service(execution_context& e, \
-      ASIO_VARIADIC_MOVE_PARAMS(n)) \
-  { \
-    detail::scoped_ptr<Service> svc( \
-        new Service(e, ASIO_VARIADIC_MOVE_ARGS(n))); \
-    e.service_registry_->template add_service<Service>(svc.get()); \
-    Service& result = *svc; \
-    svc.release(); \
-    return result; \
-  } \
-  /**/
-  ASIO_VARIADIC_GENERATE(ASIO_PRIVATE_MAKE_SERVICE_DEF)
-#undef ASIO_PRIVATE_MAKE_SERVICE_DEF
-
-# endif // defined(ASIO_HAS_VARIADIC_TEMPLATES)
-#endif // !defined(GENERATING_DOCUMENTATION)
-
-template <typename Service>
-inline void add_service(execution_context& e, Service* svc)
-{
-  // Check that Service meets the necessary type requirements.
-  (void)static_cast<execution_context::service*>(static_cast<Service*>(0));
-
-  e.service_registry_->template add_service<Service>(svc);
-}
-
-template <typename Service>
-inline bool has_service(execution_context& e)
-{
-  // Check that Service meets the necessary type requirements.
-  (void)static_cast<execution_context::service*>(static_cast<Service*>(0));
-
-  return e.service_registry_->template has_service<Service>();
-}
-
-inline execution_context& execution_context::service::context()
-{
-  return owner_;
-}
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_IMPL_EXECUTION_CONTEXT_HPP
diff --git a/lib/asio/impl/execution_context.ipp b/lib/asio/impl/execution_context.ipp
deleted file mode 100644
index c2b3b21..0000000
--- a/lib/asio/impl/execution_context.ipp
+++ /dev/null
@@ -1,82 +0,0 @@
-//
-// impl/execution_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_IMPL_EXECUTION_CONTEXT_IPP
-#define ASIO_IMPL_EXECUTION_CONTEXT_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include "asio/execution_context.hpp"
-#include "asio/detail/service_registry.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-execution_context::execution_context()
-  : service_registry_(new asio::detail::service_registry(*this))
-{
-}
-
-execution_context::~execution_context()
-{
-  shutdown();
-  destroy();
-  delete service_registry_;
-}
-
-void execution_context::shutdown()
-{
-  service_registry_->shutdown_services();
-}
-
-void execution_context::destroy()
-{
-  service_registry_->destroy_services();
-}
-
-void execution_context::notify_fork(
-    asio::execution_context::fork_event event)
-{
-  service_registry_->notify_fork(event);
-}
-
-execution_context::service::service(execution_context& owner)
-  : owner_(owner),
-    next_(0)
-{
-}
-
-execution_context::service::~service()
-{
-}
-
-void execution_context::service::notify_fork(execution_context::fork_event)
-{
-}
-
-service_already_exists::service_already_exists()
-  : std::logic_error("Service already exists.")
-{
-}
-
-invalid_service_owner::invalid_service_owner()
-  : std::logic_error("Invalid service owner.")
-{
-}
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_IMPL_EXECUTION_CONTEXT_IPP
diff --git a/lib/asio/impl/executor.hpp b/lib/asio/impl/executor.hpp
deleted file mode 100644
index 0fcf5f5..0000000
--- a/lib/asio/impl/executor.hpp
+++ /dev/null
@@ -1,386 +0,0 @@
-//
-// impl/executor.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_IMPL_EXECUTOR_HPP
-#define ASIO_IMPL_EXECUTOR_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include "asio/detail/atomic_count.hpp"
-#include "asio/detail/executor_op.hpp"
-#include "asio/detail/global.hpp"
-#include "asio/detail/memory.hpp"
-#include "asio/detail/recycling_allocator.hpp"
-#include "asio/executor.hpp"
-#include "asio/system_executor.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-#if !defined(GENERATING_DOCUMENTATION)
-
-#if defined(ASIO_HAS_MOVE)
-
-// Lightweight, move-only function object wrapper.
-class executor::function
-{
-public:
-  template <typename F, typename Alloc>
-  explicit function(F f, const Alloc& a)
-  {
-    // Allocate and construct an operation to wrap the function.
-    typedef detail::executor_op<F, Alloc> op;
-    typename op::ptr p = { detail::addressof(a), op::ptr::allocate(a), 0 };
-    op_ = new (p.v) op(ASIO_MOVE_CAST(F)(f), a);
-    p.v = 0;
-  }
-
-  function(function&& other)
-    : op_(other.op_)
-  {
-    other.op_ = 0;
-  }
-
-  ~function()
-  {
-    if (op_)
-      op_->destroy();
-  }
-
-  void operator()()
-  {
-    if (op_)
-    {
-      detail::scheduler_operation* op = op_;
-      op_ = 0;
-      op->complete(this, asio::error_code(), 0);
-    }
-  }
-
-private:
-  detail::scheduler_operation* op_;
-};
-
-#else // defined(ASIO_HAS_MOVE)
-
-// Not so lightweight, copyable function object wrapper.
-class executor::function
-{
-public:
-  template <typename F, typename Alloc>
-  explicit function(const F& f, const Alloc&)
-    : impl_(new impl<F>(f))
-  {
-  }
-
-  void operator()()
-  {
-    impl_->invoke_(impl_.get());
-  }
-
-private:
-  // Base class for polymorphic function implementations.
-  struct impl_base
-  {
-    void (*invoke_)(impl_base*);
-  };
-
-  // Polymorphic function implementation.
-  template <typename F>
-  struct impl : impl_base
-  {
-    impl(const F& f)
-      : function_(f)
-    {
-      invoke_ = &function::invoke<F>;
-    }
-
-    F function_;
-  };
-
-  // Helper to invoke a function.
-  template <typename F>
-  static void invoke(impl_base* i)
-  {
-    static_cast<impl<F>*>(i)->function_();
-  }
-
-  detail::shared_ptr<impl_base> impl_;
-};
-
-#endif // defined(ASIO_HAS_MOVE)
-
-// Default polymorphic allocator implementation.
-template <typename Executor, typename Allocator>
-class executor::impl
-  : public executor::impl_base
-{
-public:
-  typedef ASIO_REBIND_ALLOC(Allocator, impl) allocator_type;
-
-  static impl_base* create(const Executor& e, Allocator a = Allocator())
-  {
-    raw_mem mem(a);
-    impl* p = new (mem.ptr_) impl(e, a);
-    mem.ptr_ = 0;
-    return p;
-  }
-
-  impl(const Executor& e, const Allocator& a) ASIO_NOEXCEPT
-    : impl_base(false),
-      ref_count_(1),
-      executor_(e),
-      allocator_(a)
-  {
-  }
-
-  impl_base* clone() const ASIO_NOEXCEPT
-  {
-    ++ref_count_;
-    return const_cast<impl_base*>(static_cast<const impl_base*>(this));
-  }
-
-  void destroy() ASIO_NOEXCEPT
-  {
-    if (--ref_count_ == 0)
-    {
-      allocator_type alloc(allocator_);
-      impl* p = this;
-      p->~impl();
-      alloc.deallocate(p, 1);
-    }
-  }
-
-  void on_work_started() ASIO_NOEXCEPT
-  {
-    executor_.on_work_started();
-  }
-
-  void on_work_finished() ASIO_NOEXCEPT
-  {
-    executor_.on_work_finished();
-  }
-
-  execution_context& context() ASIO_NOEXCEPT
-  {
-    return executor_.context();
-  }
-
-  void dispatch(ASIO_MOVE_ARG(function) f)
-  {
-    executor_.dispatch(ASIO_MOVE_CAST(function)(f), allocator_);
-  }
-
-  void post(ASIO_MOVE_ARG(function) f)
-  {
-    executor_.post(ASIO_MOVE_CAST(function)(f), allocator_);
-  }
-
-  void defer(ASIO_MOVE_ARG(function) f)
-  {
-    executor_.defer(ASIO_MOVE_CAST(function)(f), allocator_);
-  }
-
-  type_id_result_type target_type() const ASIO_NOEXCEPT
-  {
-    return type_id<Executor>();
-  }
-
-  void* target() ASIO_NOEXCEPT
-  {
-    return &executor_;
-  }
-
-  const void* target() const ASIO_NOEXCEPT
-  {
-    return &executor_;
-  }
-
-  bool equals(const impl_base* e) const ASIO_NOEXCEPT
-  {
-    if (this == e)
-      return true;
-    if (target_type() != e->target_type())
-      return false;
-    return executor_ == *static_cast<const Executor*>(e->target());
-  }
-
-private:
-  mutable detail::atomic_count ref_count_;
-  Executor executor_;
-  Allocator allocator_;
-
-  struct raw_mem
-  {
-    allocator_type allocator_;
-    impl* ptr_;
-
-    explicit raw_mem(const Allocator& a)
-      : allocator_(a),
-        ptr_(allocator_.allocate(1))
-    {
-    }
-
-    ~raw_mem()
-    {
-      if (ptr_)
-        allocator_.deallocate(ptr_, 1);
-    }
-
-  private:
-    // Disallow copying and assignment.
-    raw_mem(const raw_mem&);
-    raw_mem operator=(const raw_mem&);
-  };
-};
-
-// Polymorphic allocator specialisation for system_executor.
-template <typename Allocator>
-class executor::impl<system_executor, Allocator>
-  : public executor::impl_base
-{
-public:
-  static impl_base* create(const system_executor&,
-      const Allocator& = Allocator())
-  {
-    return &detail::global<impl<system_executor, std::allocator<void> > >();
-  }
-
-  impl()
-    : impl_base(true)
-  {
-  }
-
-  impl_base* clone() const ASIO_NOEXCEPT
-  {
-    return const_cast<impl_base*>(static_cast<const impl_base*>(this));
-  }
-
-  void destroy() ASIO_NOEXCEPT
-  {
-  }
-
-  void on_work_started() ASIO_NOEXCEPT
-  {
-    executor_.on_work_started();
-  }
-
-  void on_work_finished() ASIO_NOEXCEPT
-  {
-    executor_.on_work_finished();
-  }
-
-  execution_context& context() ASIO_NOEXCEPT
-  {
-    return executor_.context();
-  }
-
-  void dispatch(ASIO_MOVE_ARG(function) f)
-  {
-    executor_.dispatch(ASIO_MOVE_CAST(function)(f), allocator_);
-  }
-
-  void post(ASIO_MOVE_ARG(function) f)
-  {
-    executor_.post(ASIO_MOVE_CAST(function)(f), allocator_);
-  }
-
-  void defer(ASIO_MOVE_ARG(function) f)
-  {
-    executor_.defer(ASIO_MOVE_CAST(function)(f), allocator_);
-  }
-
-  type_id_result_type target_type() const ASIO_NOEXCEPT
-  {
-    return type_id<system_executor>();
-  }
-
-  void* target() ASIO_NOEXCEPT
-  {
-    return &executor_;
-  }
-
-  const void* target() const ASIO_NOEXCEPT
-  {
-    return &executor_;
-  }
-
-  bool equals(const impl_base* e) const ASIO_NOEXCEPT
-  {
-    return this == e;
-  }
-
-private:
-  system_executor executor_;
-  Allocator allocator_;
-};
-
-template <typename Executor>
-executor::executor(Executor e)
-  : impl_(impl<Executor, std::allocator<void> >::create(e))
-{
-}
-
-template <typename Executor, typename Allocator>
-executor::executor(allocator_arg_t, const Allocator& a, Executor e)
-  : impl_(impl<Executor, Allocator>::create(e, a))
-{
-}
-
-template <typename Function, typename Allocator>
-void executor::dispatch(ASIO_MOVE_ARG(Function) f,
-    const Allocator& a) const
-{
-  impl_base* i = get_impl();
-  if (i->fast_dispatch_)
-    system_executor().dispatch(ASIO_MOVE_CAST(Function)(f), a);
-  else
-    i->dispatch(function(ASIO_MOVE_CAST(Function)(f), a));
-}
-
-template <typename Function, typename Allocator>
-void executor::post(ASIO_MOVE_ARG(Function) f,
-    const Allocator& a) const
-{
-  get_impl()->post(function(ASIO_MOVE_CAST(Function)(f), a));
-}
-
-template <typename Function, typename Allocator>
-void executor::defer(ASIO_MOVE_ARG(Function) f,
-    const Allocator& a) const
-{
-  get_impl()->defer(function(ASIO_MOVE_CAST(Function)(f), a));
-}
-
-template <typename Executor>
-Executor* executor::target() ASIO_NOEXCEPT
-{
-  return impl_ && impl_->target_type() == type_id<Executor>()
-    ? static_cast<Executor*>(impl_->target()) : 0;
-}
-
-template <typename Executor>
-const Executor* executor::target() const ASIO_NOEXCEPT
-{
-  return impl_ && impl_->target_type() == type_id<Executor>()
-    ? static_cast<Executor*>(impl_->target()) : 0;
-}
-
-#endif // !defined(GENERATING_DOCUMENTATION)
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_IMPL_EXECUTOR_HPP
diff --git a/lib/asio/impl/executor.ipp b/lib/asio/impl/executor.ipp
deleted file mode 100644
index 4bd0dc5..0000000
--- a/lib/asio/impl/executor.ipp
+++ /dev/null
@@ -1,38 +0,0 @@
-//
-// impl/executor.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_IMPL_EXECUTOR_IPP
-#define ASIO_IMPL_EXECUTOR_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include "asio/executor.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-bad_executor::bad_executor() ASIO_NOEXCEPT
-{
-}
-
-const char* bad_executor::what() const ASIO_NOEXCEPT_OR_NOTHROW
-{
-  return "bad executor";
-}
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_IMPL_EXECUTOR_IPP
diff --git a/lib/asio/impl/handler_alloc_hook.ipp b/lib/asio/impl/handler_alloc_hook.ipp
deleted file mode 100644
index 909ddac..0000000
--- a/lib/asio/impl/handler_alloc_hook.ipp
+++ /dev/null
@@ -1,52 +0,0 @@
-//
-// impl/handler_alloc_hook.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_IMPL_HANDLER_ALLOC_HOOK_IPP
-#define ASIO_IMPL_HANDLER_ALLOC_HOOK_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/thread_context.hpp"
-#include "asio/detail/thread_info_base.hpp"
-#include "asio/handler_alloc_hook.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-void* asio_handler_allocate(std::size_t size, ...)
-{
-#if !defined(ASIO_DISABLE_SMALL_BLOCK_RECYCLING)
-  return detail::thread_info_base::allocate(
-      detail::thread_context::thread_call_stack::top(), size);
-#else // !defined(ASIO_DISABLE_SMALL_BLOCK_RECYCLING)
-  return ::operator new(size);
-#endif // !defined(ASIO_DISABLE_SMALL_BLOCK_RECYCLING)
-}
-
-void asio_handler_deallocate(void* pointer, std::size_t size, ...)
-{
-#if !defined(ASIO_DISABLE_SMALL_BLOCK_RECYCLING)
-  detail::thread_info_base::deallocate(
-      detail::thread_context::thread_call_stack::top(), pointer, size);
-#else // !defined(ASIO_DISABLE_SMALL_BLOCK_RECYCLING)
-  (void)size;
-  ::operator delete(pointer);
-#endif // !defined(ASIO_DISABLE_SMALL_BLOCK_RECYCLING)
-}
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_IMPL_HANDLER_ALLOC_HOOK_IPP
diff --git a/lib/asio/impl/io_context.hpp b/lib/asio/impl/io_context.hpp
deleted file mode 100644
index eaf580d..0000000
--- a/lib/asio/impl/io_context.hpp
+++ /dev/null
@@ -1,343 +0,0 @@
-//
-// impl/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_IMPL_IO_CONTEXT_HPP
-#define ASIO_IMPL_IO_CONTEXT_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/completion_handler.hpp"
-#include "asio/detail/executor_op.hpp"
-#include "asio/detail/fenced_block.hpp"
-#include "asio/detail/handler_type_requirements.hpp"
-#include "asio/detail/recycling_allocator.hpp"
-#include "asio/detail/service_registry.hpp"
-#include "asio/detail/throw_error.hpp"
-#include "asio/detail/type_traits.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-template <typename Service>
-inline Service& use_service(io_context& ioc)
-{
-  // Check that Service meets the necessary type requirements.
-  (void)static_cast<execution_context::service*>(static_cast<Service*>(0));
-  (void)static_cast<const execution_context::id*>(&Service::id);
-
-  return ioc.service_registry_->template use_service<Service>(ioc);
-}
-
-template <>
-inline detail::io_context_impl& use_service<detail::io_context_impl>(
-    io_context& ioc)
-{
-  return ioc.impl_;
-}
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#if defined(ASIO_HAS_IOCP)
-# include "asio/detail/win_iocp_io_context.hpp"
-#else
-# include "asio/detail/scheduler.hpp"
-#endif
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-inline io_context::executor_type
-io_context::get_executor() ASIO_NOEXCEPT
-{
-  return executor_type(*this);
-}
-
-#if defined(ASIO_HAS_CHRONO)
-
-template <typename Rep, typename Period>
-std::size_t io_context::run_for(
-    const chrono::duration<Rep, Period>& rel_time)
-{
-  return this->run_until(chrono::steady_clock::now() + rel_time);
-}
-
-template <typename Clock, typename Duration>
-std::size_t io_context::run_until(
-    const chrono::time_point<Clock, Duration>& abs_time)
-{
-  std::size_t n = 0;
-  while (this->run_one_until(abs_time))
-    if (n != (std::numeric_limits<std::size_t>::max)())
-      ++n;
-  return n;
-}
-
-template <typename Rep, typename Period>
-std::size_t io_context::run_one_for(
-    const chrono::duration<Rep, Period>& rel_time)
-{
-  return this->run_one_until(chrono::steady_clock::now() + rel_time);
-}
-
-template <typename Clock, typename Duration>
-std::size_t io_context::run_one_until(
-    const chrono::time_point<Clock, Duration>& abs_time)
-{
-  typename Clock::time_point now = Clock::now();
-  while (now < abs_time)
-  {
-    typename Clock::duration rel_time = abs_time - now;
-    if (rel_time > chrono::seconds(1))
-      rel_time = chrono::seconds(1);
-
-    asio::error_code ec;
-    std::size_t s = impl_.wait_one(
-        static_cast<long>(chrono::duration_cast<
-          chrono::microseconds>(rel_time).count()), ec);
-    asio::detail::throw_error(ec);
-
-    if (s || impl_.stopped())
-      return s;
-
-    now = Clock::now();
-  }
-
-  return 0;
-}
-
-#endif // defined(ASIO_HAS_CHRONO)
-
-#if !defined(ASIO_NO_DEPRECATED)
-
-inline void io_context::reset()
-{
-  restart();
-}
-
-template <typename LegacyCompletionHandler>
-ASIO_INITFN_RESULT_TYPE(LegacyCompletionHandler, void ())
-io_context::dispatch(ASIO_MOVE_ARG(LegacyCompletionHandler) handler)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a LegacyCompletionHandler.
-  ASIO_LEGACY_COMPLETION_HANDLER_CHECK(
-      LegacyCompletionHandler, handler) type_check;
-
-  async_completion<LegacyCompletionHandler, void ()> init(handler);
-
-  if (impl_.can_dispatch())
-  {
-    detail::fenced_block b(detail::fenced_block::full);
-    asio_handler_invoke_helpers::invoke(
-        init.completion_handler, init.completion_handler);
-  }
-  else
-  {
-    // Allocate and construct an operation to wrap the handler.
-    typedef detail::completion_handler<
-      typename handler_type<LegacyCompletionHandler, void ()>::type> op;
-    typename op::ptr p = { detail::addressof(init.completion_handler),
-      op::ptr::allocate(init.completion_handler), 0 };
-    p.p = new (p.v) op(init.completion_handler);
-
-    ASIO_HANDLER_CREATION((*this, *p.p,
-          "io_context", this, 0, "dispatch"));
-
-    impl_.do_dispatch(p.p);
-    p.v = p.p = 0;
-  }
-
-  return init.result.get();
-}
-
-template <typename LegacyCompletionHandler>
-ASIO_INITFN_RESULT_TYPE(LegacyCompletionHandler, void ())
-io_context::post(ASIO_MOVE_ARG(LegacyCompletionHandler) handler)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a LegacyCompletionHandler.
-  ASIO_LEGACY_COMPLETION_HANDLER_CHECK(
-      LegacyCompletionHandler, handler) type_check;
-
-  async_completion<LegacyCompletionHandler, void ()> init(handler);
-
-  bool is_continuation =
-    asio_handler_cont_helpers::is_continuation(init.completion_handler);
-
-  // Allocate and construct an operation to wrap the handler.
-  typedef detail::completion_handler<
-    typename handler_type<LegacyCompletionHandler, void ()>::type> op;
-  typename op::ptr p = { detail::addressof(init.completion_handler),
-      op::ptr::allocate(init.completion_handler), 0 };
-  p.p = new (p.v) op(init.completion_handler);
-
-  ASIO_HANDLER_CREATION((*this, *p.p,
-        "io_context", this, 0, "post"));
-
-  impl_.post_immediate_completion(p.p, is_continuation);
-  p.v = p.p = 0;
-
-  return init.result.get();
-}
-
-template <typename Handler>
-#if defined(GENERATING_DOCUMENTATION)
-unspecified
-#else
-inline detail::wrapped_handler<io_context&, Handler>
-#endif
-io_context::wrap(Handler handler)
-{
-  return detail::wrapped_handler<io_context&, Handler>(*this, handler);
-}
-
-#endif // !defined(ASIO_NO_DEPRECATED)
-
-inline io_context&
-io_context::executor_type::context() const ASIO_NOEXCEPT
-{
-  return io_context_;
-}
-
-inline void
-io_context::executor_type::on_work_started() const ASIO_NOEXCEPT
-{
-  io_context_.impl_.work_started();
-}
-
-inline void
-io_context::executor_type::on_work_finished() const ASIO_NOEXCEPT
-{
-  io_context_.impl_.work_finished();
-}
-
-template <typename Function, typename Allocator>
-void io_context::executor_type::dispatch(
-    ASIO_MOVE_ARG(Function) f, const Allocator& a) const
-{
-  typedef typename decay<Function>::type function_type;
-
-  // Invoke immediately if we are already inside the thread pool.
-  if (io_context_.impl_.can_dispatch())
-  {
-    // Make a local, non-const copy of the function.
-    function_type tmp(ASIO_MOVE_CAST(Function)(f));
-
-    detail::fenced_block b(detail::fenced_block::full);
-    asio_handler_invoke_helpers::invoke(tmp, tmp);
-    return;
-  }
-
-  // Allocate and construct an operation to wrap the function.
-  typedef detail::executor_op<function_type, Allocator, detail::operation> op;
-  typename op::ptr p = { detail::addressof(a), op::ptr::allocate(a), 0 };
-  p.p = new (p.v) op(ASIO_MOVE_CAST(Function)(f), a);
-
-  ASIO_HANDLER_CREATION((this->context(), *p.p,
-        "io_context", &this->context(), 0, "post"));
-
-  io_context_.impl_.post_immediate_completion(p.p, false);
-  p.v = p.p = 0;
-}
-
-template <typename Function, typename Allocator>
-void io_context::executor_type::post(
-    ASIO_MOVE_ARG(Function) f, const Allocator& a) const
-{
-  typedef typename decay<Function>::type function_type;
-
-  // Allocate and construct an operation to wrap the function.
-  typedef detail::executor_op<function_type, Allocator, detail::operation> op;
-  typename op::ptr p = { detail::addressof(a), op::ptr::allocate(a), 0 };
-  p.p = new (p.v) op(ASIO_MOVE_CAST(Function)(f), a);
-
-  ASIO_HANDLER_CREATION((this->context(), *p.p,
-        "io_context", &this->context(), 0, "post"));
-
-  io_context_.impl_.post_immediate_completion(p.p, false);
-  p.v = p.p = 0;
-}
-
-template <typename Function, typename Allocator>
-void io_context::executor_type::defer(
-    ASIO_MOVE_ARG(Function) f, const Allocator& a) const
-{
-  typedef typename decay<Function>::type function_type;
-
-  // Allocate and construct an operation to wrap the function.
-  typedef detail::executor_op<function_type, Allocator, detail::operation> op;
-  typename op::ptr p = { detail::addressof(a), op::ptr::allocate(a), 0 };
-  p.p = new (p.v) op(ASIO_MOVE_CAST(Function)(f), a);
-
-  ASIO_HANDLER_CREATION((this->context(), *p.p,
-        "io_context", &this->context(), 0, "defer"));
-
-  io_context_.impl_.post_immediate_completion(p.p, true);
-  p.v = p.p = 0;
-}
-
-inline bool
-io_context::executor_type::running_in_this_thread() const ASIO_NOEXCEPT
-{
-  return io_context_.impl_.can_dispatch();
-}
-
-#if !defined(ASIO_NO_DEPRECATED)
-inline io_context::work::work(asio::io_context& io_context)
-  : io_context_impl_(io_context.impl_)
-{
-  io_context_impl_.work_started();
-}
-
-inline io_context::work::work(const work& other)
-  : io_context_impl_(other.io_context_impl_)
-{
-  io_context_impl_.work_started();
-}
-
-inline io_context::work::~work()
-{
-  io_context_impl_.work_finished();
-}
-
-inline asio::io_context& io_context::work::get_io_context()
-{
-  return static_cast<asio::io_context&>(io_context_impl_.context());
-}
-
-inline asio::io_context& io_context::work::get_io_service()
-{
-  return static_cast<asio::io_context&>(io_context_impl_.context());
-}
-#endif // !defined(ASIO_NO_DEPRECATED)
-
-inline asio::io_context& io_context::service::get_io_context()
-{
-  return static_cast<asio::io_context&>(context());
-}
-
-#if !defined(ASIO_NO_DEPRECATED)
-inline asio::io_context& io_context::service::get_io_service()
-{
-  return static_cast<asio::io_context&>(context());
-}
-#endif // !defined(ASIO_NO_DEPRECATED)
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_IMPL_IO_CONTEXT_HPP
diff --git a/lib/asio/impl/io_context.ipp b/lib/asio/impl/io_context.ipp
deleted file mode 100644
index 7eb467d..0000000
--- a/lib/asio/impl/io_context.ipp
+++ /dev/null
@@ -1,174 +0,0 @@
-//
-// impl/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_IMPL_IO_CONTEXT_IPP
-#define ASIO_IMPL_IO_CONTEXT_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include "asio/io_context.hpp"
-#include "asio/detail/concurrency_hint.hpp"
-#include "asio/detail/limits.hpp"
-#include "asio/detail/scoped_ptr.hpp"
-#include "asio/detail/service_registry.hpp"
-#include "asio/detail/throw_error.hpp"
-
-#if defined(ASIO_HAS_IOCP)
-# include "asio/detail/win_iocp_io_context.hpp"
-#else
-# include "asio/detail/scheduler.hpp"
-#endif
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-io_context::io_context()
-  : impl_(add_impl(new impl_type(*this, ASIO_CONCURRENCY_HINT_DEFAULT)))
-{
-}
-
-io_context::io_context(int concurrency_hint)
-  : impl_(add_impl(new impl_type(*this, concurrency_hint == 1
-          ? ASIO_CONCURRENCY_HINT_1 : concurrency_hint)))
-{
-}
-
-io_context::impl_type& io_context::add_impl(io_context::impl_type* impl)
-{
-  asio::detail::scoped_ptr<impl_type> scoped_impl(impl);
-  asio::add_service<impl_type>(*this, scoped_impl.get());
-  return *scoped_impl.release();
-}
-
-io_context::~io_context()
-{
-}
-
-io_context::count_type io_context::run()
-{
-  asio::error_code ec;
-  count_type s = impl_.run(ec);
-  asio::detail::throw_error(ec);
-  return s;
-}
-
-#if !defined(ASIO_NO_DEPRECATED)
-io_context::count_type io_context::run(asio::error_code& ec)
-{
-  return impl_.run(ec);
-}
-#endif // !defined(ASIO_NO_DEPRECATED)
-
-io_context::count_type io_context::run_one()
-{
-  asio::error_code ec;
-  count_type s = impl_.run_one(ec);
-  asio::detail::throw_error(ec);
-  return s;
-}
-
-#if !defined(ASIO_NO_DEPRECATED)
-io_context::count_type io_context::run_one(asio::error_code& ec)
-{
-  return impl_.run_one(ec);
-}
-#endif // !defined(ASIO_NO_DEPRECATED)
-
-io_context::count_type io_context::poll()
-{
-  asio::error_code ec;
-  count_type s = impl_.poll(ec);
-  asio::detail::throw_error(ec);
-  return s;
-}
-
-#if !defined(ASIO_NO_DEPRECATED)
-io_context::count_type io_context::poll(asio::error_code& ec)
-{
-  return impl_.poll(ec);
-}
-#endif // !defined(ASIO_NO_DEPRECATED)
-
-io_context::count_type io_context::poll_one()
-{
-  asio::error_code ec;
-  count_type s = impl_.poll_one(ec);
-  asio::detail::throw_error(ec);
-  return s;
-}
-
-#if !defined(ASIO_NO_DEPRECATED)
-io_context::count_type io_context::poll_one(asio::error_code& ec)
-{
-  return impl_.poll_one(ec);
-}
-#endif // !defined(ASIO_NO_DEPRECATED)
-
-void io_context::stop()
-{
-  impl_.stop();
-}
-
-bool io_context::stopped() const
-{
-  return impl_.stopped();
-}
-
-void io_context::restart()
-{
-  impl_.restart();
-}
-
-io_context::service::service(asio::io_context& owner)
-  : execution_context::service(owner)
-{
-}
-
-io_context::service::~service()
-{
-}
-
-void io_context::service::shutdown()
-{
-#if !defined(ASIO_NO_DEPRECATED)
-  shutdown_service();
-#endif // !defined(ASIO_NO_DEPRECATED)
-}
-
-#if !defined(ASIO_NO_DEPRECATED)
-void io_context::service::shutdown_service()
-{
-}
-#endif // !defined(ASIO_NO_DEPRECATED)
-
-void io_context::service::notify_fork(io_context::fork_event ev)
-{
-#if !defined(ASIO_NO_DEPRECATED)
-  fork_service(ev);
-#else // !defined(ASIO_NO_DEPRECATED)
-  (void)ev;
-#endif // !defined(ASIO_NO_DEPRECATED)
-}
-
-#if !defined(ASIO_NO_DEPRECATED)
-void io_context::service::fork_service(io_context::fork_event)
-{
-}
-#endif // !defined(ASIO_NO_DEPRECATED)
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_IMPL_IO_CONTEXT_IPP
diff --git a/lib/asio/impl/post.hpp b/lib/asio/impl/post.hpp
deleted file mode 100644
index 5538953..0000000
--- a/lib/asio/impl/post.hpp
+++ /dev/null
@@ -1,77 +0,0 @@
-//
-// impl/post.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_IMPL_POST_HPP
-#define ASIO_IMPL_POST_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include "asio/associated_allocator.hpp"
-#include "asio/associated_executor.hpp"
-#include "asio/detail/work_dispatcher.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-template <typename CompletionToken>
-ASIO_INITFN_RESULT_TYPE(CompletionToken, void()) post(
-    ASIO_MOVE_ARG(CompletionToken) token)
-{
-  typedef ASIO_HANDLER_TYPE(CompletionToken, void()) handler;
-
-  async_completion<CompletionToken, void()> init(token);
-
-  typename associated_executor<handler>::type ex(
-      (get_associated_executor)(init.completion_handler));
-
-  typename associated_allocator<handler>::type alloc(
-      (get_associated_allocator)(init.completion_handler));
-
-  ex.post(ASIO_MOVE_CAST(handler)(init.completion_handler), alloc);
-
-  return init.result.get();
-}
-
-template <typename Executor, typename CompletionToken>
-ASIO_INITFN_RESULT_TYPE(CompletionToken, void()) post(
-    const Executor& ex, ASIO_MOVE_ARG(CompletionToken) token,
-    typename enable_if<is_executor<Executor>::value>::type*)
-{
-  typedef ASIO_HANDLER_TYPE(CompletionToken, void()) handler;
-
-  async_completion<CompletionToken, void()> init(token);
-
-  typename associated_allocator<handler>::type alloc(
-      (get_associated_allocator)(init.completion_handler));
-
-  ex.post(detail::work_dispatcher<handler>(init.completion_handler), alloc);
-
-  return init.result.get();
-}
-
-template <typename ExecutionContext, typename CompletionToken>
-inline ASIO_INITFN_RESULT_TYPE(CompletionToken, void()) post(
-    ExecutionContext& ctx, ASIO_MOVE_ARG(CompletionToken) token,
-    typename enable_if<is_convertible<
-      ExecutionContext&, execution_context&>::value>::type*)
-{
-  return (post)(ctx.get_executor(),
-      ASIO_MOVE_CAST(CompletionToken)(token));
-}
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_IMPL_POST_HPP
diff --git a/lib/asio/impl/read.hpp b/lib/asio/impl/read.hpp
deleted file mode 100644
index 603a7a9..0000000
--- a/lib/asio/impl/read.hpp
+++ /dev/null
@@ -1,715 +0,0 @@
-//
-// impl/read.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_IMPL_READ_HPP
-#define ASIO_IMPL_READ_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include <algorithm>
-#include "asio/associated_allocator.hpp"
-#include "asio/associated_executor.hpp"
-#include "asio/buffer.hpp"
-#include "asio/completion_condition.hpp"
-#include "asio/detail/array_fwd.hpp"
-#include "asio/detail/base_from_completion_cond.hpp"
-#include "asio/detail/bind_handler.hpp"
-#include "asio/detail/consuming_buffers.hpp"
-#include "asio/detail/dependent_type.hpp"
-#include "asio/detail/handler_alloc_helpers.hpp"
-#include "asio/detail/handler_cont_helpers.hpp"
-#include "asio/detail/handler_invoke_helpers.hpp"
-#include "asio/detail/handler_type_requirements.hpp"
-#include "asio/detail/throw_error.hpp"
-#include "asio/error.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-namespace detail
-{
-  template <typename SyncReadStream, typename MutableBufferSequence,
-      typename MutableBufferIterator, typename CompletionCondition>
-  std::size_t read_buffer_sequence(SyncReadStream& s,
-      const MutableBufferSequence& buffers, const MutableBufferIterator&,
-      CompletionCondition completion_condition, asio::error_code& ec)
-  {
-    ec = asio::error_code();
-    asio::detail::consuming_buffers<mutable_buffer,
-        MutableBufferSequence, MutableBufferIterator> tmp(buffers);
-    while (!tmp.empty())
-    {
-      if (std::size_t max_size = detail::adapt_completion_condition_result(
-            completion_condition(ec, tmp.total_consumed())))
-        tmp.consume(s.read_some(tmp.prepare(max_size), ec));
-      else
-        break;
-    }
-    return tmp.total_consumed();;
-  }
-} // namespace detail
-
-template <typename SyncReadStream, typename MutableBufferSequence,
-    typename CompletionCondition>
-std::size_t read(SyncReadStream& s, const MutableBufferSequence& buffers,
-    CompletionCondition completion_condition, asio::error_code& ec,
-    typename enable_if<
-      is_mutable_buffer_sequence<MutableBufferSequence>::value
-    >::type*)
-{
-  return detail::read_buffer_sequence(s, buffers,
-      asio::buffer_sequence_begin(buffers), completion_condition, ec);
-}
-
-template <typename SyncReadStream, typename MutableBufferSequence>
-inline std::size_t read(SyncReadStream& s, const MutableBufferSequence& buffers,
-    typename enable_if<
-      is_mutable_buffer_sequence<MutableBufferSequence>::value
-    >::type*)
-{
-  asio::error_code ec;
-  std::size_t bytes_transferred = read(s, buffers, transfer_all(), ec);
-  asio::detail::throw_error(ec, "read");
-  return bytes_transferred;
-}
-
-template <typename SyncReadStream, typename MutableBufferSequence>
-inline std::size_t read(SyncReadStream& s, const MutableBufferSequence& buffers,
-    asio::error_code& ec,
-    typename enable_if<
-      is_mutable_buffer_sequence<MutableBufferSequence>::value
-    >::type*)
-{
-  return read(s, buffers, transfer_all(), ec);
-}
-
-template <typename SyncReadStream, typename MutableBufferSequence,
-    typename CompletionCondition>
-inline std::size_t read(SyncReadStream& s, const MutableBufferSequence& buffers,
-    CompletionCondition completion_condition,
-    typename enable_if<
-      is_mutable_buffer_sequence<MutableBufferSequence>::value
-    >::type*)
-{
-  asio::error_code ec;
-  std::size_t bytes_transferred = read(s, buffers, completion_condition, ec);
-  asio::detail::throw_error(ec, "read");
-  return bytes_transferred;
-}
-
-template <typename SyncReadStream, typename DynamicBuffer,
-    typename CompletionCondition>
-std::size_t read(SyncReadStream& s,
-    ASIO_MOVE_ARG(DynamicBuffer) buffers,
-    CompletionCondition completion_condition, asio::error_code& ec,
-    typename enable_if<
-      is_dynamic_buffer<typename decay<DynamicBuffer>::type>::value
-    >::type*)
-{
-  typename decay<DynamicBuffer>::type b(
-      ASIO_MOVE_CAST(DynamicBuffer)(buffers));
-
-  ec = asio::error_code();
-  std::size_t total_transferred = 0;
-  std::size_t max_size = detail::adapt_completion_condition_result(
-        completion_condition(ec, total_transferred));
-  std::size_t bytes_available = std::min<std::size_t>(
-        std::max<std::size_t>(512, b.capacity() - b.size()),
-        std::min<std::size_t>(max_size, b.max_size() - b.size()));
-  while (bytes_available > 0)
-  {
-    std::size_t bytes_transferred = s.read_some(b.prepare(bytes_available), ec);
-    b.commit(bytes_transferred);
-    total_transferred += bytes_transferred;
-    max_size = detail::adapt_completion_condition_result(
-          completion_condition(ec, total_transferred));
-    bytes_available = std::min<std::size_t>(
-          std::max<std::size_t>(512, b.capacity() - b.size()),
-          std::min<std::size_t>(max_size, b.max_size() - b.size()));
-  }
-  return total_transferred;
-}
-
-template <typename SyncReadStream, typename DynamicBuffer>
-inline std::size_t read(SyncReadStream& s,
-    ASIO_MOVE_ARG(DynamicBuffer) buffers,
-    typename enable_if<
-      is_dynamic_buffer<typename decay<DynamicBuffer>::type>::value
-    >::type*)
-{
-  asio::error_code ec;
-  std::size_t bytes_transferred = read(s,
-      ASIO_MOVE_CAST(DynamicBuffer)(buffers), transfer_all(), ec);
-  asio::detail::throw_error(ec, "read");
-  return bytes_transferred;
-}
-
-template <typename SyncReadStream, typename DynamicBuffer>
-inline std::size_t read(SyncReadStream& s,
-    ASIO_MOVE_ARG(DynamicBuffer) buffers,
-    asio::error_code& ec,
-    typename enable_if<
-      is_dynamic_buffer<typename decay<DynamicBuffer>::type>::value
-    >::type*)
-{
-  return read(s, ASIO_MOVE_CAST(DynamicBuffer)(buffers),
-      transfer_all(), ec);
-}
-
-template <typename SyncReadStream, typename DynamicBuffer,
-    typename CompletionCondition>
-inline std::size_t read(SyncReadStream& s,
-    ASIO_MOVE_ARG(DynamicBuffer) buffers,
-    CompletionCondition completion_condition,
-    typename enable_if<
-      is_dynamic_buffer<typename decay<DynamicBuffer>::type>::value
-    >::type*)
-{
-  asio::error_code ec;
-  std::size_t bytes_transferred = read(s,
-      ASIO_MOVE_CAST(DynamicBuffer)(buffers),
-      completion_condition, ec);
-  asio::detail::throw_error(ec, "read");
-  return bytes_transferred;
-}
-
-#if !defined(ASIO_NO_EXTENSIONS)
-#if !defined(ASIO_NO_IOSTREAM)
-
-template <typename SyncReadStream, typename Allocator,
-    typename CompletionCondition>
-inline std::size_t read(SyncReadStream& s,
-    asio::basic_streambuf<Allocator>& b,
-    CompletionCondition completion_condition, asio::error_code& ec)
-{
-  return read(s, basic_streambuf_ref<Allocator>(b), completion_condition, ec);
-}
-
-template <typename SyncReadStream, typename Allocator>
-inline std::size_t read(SyncReadStream& s,
-    asio::basic_streambuf<Allocator>& b)
-{
-  return read(s, basic_streambuf_ref<Allocator>(b));
-}
-
-template <typename SyncReadStream, typename Allocator>
-inline std::size_t read(SyncReadStream& s,
-    asio::basic_streambuf<Allocator>& b,
-    asio::error_code& ec)
-{
-  return read(s, basic_streambuf_ref<Allocator>(b), ec);
-}
-
-template <typename SyncReadStream, typename Allocator,
-    typename CompletionCondition>
-inline std::size_t read(SyncReadStream& s,
-    asio::basic_streambuf<Allocator>& b,
-    CompletionCondition completion_condition)
-{
-  return read(s, basic_streambuf_ref<Allocator>(b), completion_condition);
-}
-
-#endif // !defined(ASIO_NO_IOSTREAM)
-#endif // !defined(ASIO_NO_EXTENSIONS)
-
-namespace detail
-{
-  template <typename AsyncReadStream, typename MutableBufferSequence,
-      typename MutableBufferIterator, typename CompletionCondition,
-      typename ReadHandler>
-  class read_op
-    : detail::base_from_completion_cond<CompletionCondition>
-  {
-  public:
-    read_op(AsyncReadStream& stream, const MutableBufferSequence& buffers,
-        CompletionCondition completion_condition, ReadHandler& handler)
-      : detail::base_from_completion_cond<
-          CompletionCondition>(completion_condition),
-        stream_(stream),
-        buffers_(buffers),
-        start_(0),
-        handler_(ASIO_MOVE_CAST(ReadHandler)(handler))
-    {
-    }
-
-#if defined(ASIO_HAS_MOVE)
-    read_op(const read_op& other)
-      : detail::base_from_completion_cond<CompletionCondition>(other),
-        stream_(other.stream_),
-        buffers_(other.buffers_),
-        start_(other.start_),
-        handler_(other.handler_)
-    {
-    }
-
-    read_op(read_op&& other)
-      : detail::base_from_completion_cond<CompletionCondition>(other),
-        stream_(other.stream_),
-        buffers_(other.buffers_),
-        start_(other.start_),
-        handler_(ASIO_MOVE_CAST(ReadHandler)(other.handler_))
-    {
-    }
-#endif // defined(ASIO_HAS_MOVE)
-
-    void operator()(const asio::error_code& ec,
-        std::size_t bytes_transferred, int start = 0)
-    {
-      std::size_t max_size;
-      switch (start_ = start)
-      {
-        case 1:
-        max_size = this->check_for_completion(ec, buffers_.total_consumed());
-        do
-        {
-          stream_.async_read_some(buffers_.prepare(max_size),
-              ASIO_MOVE_CAST(read_op)(*this));
-          return; default:
-          buffers_.consume(bytes_transferred);
-          if ((!ec && bytes_transferred == 0) || buffers_.empty())
-            break;
-          max_size = this->check_for_completion(ec, buffers_.total_consumed());
-        } while (max_size > 0);
-
-        handler_(ec, buffers_.total_consumed());
-      }
-    }
-
-  //private:
-    AsyncReadStream& stream_;
-    asio::detail::consuming_buffers<mutable_buffer,
-        MutableBufferSequence, MutableBufferIterator> buffers_;
-    int start_;
-    ReadHandler handler_;
-  };
-
-  template <typename AsyncReadStream, typename MutableBufferSequence,
-      typename MutableBufferIterator, typename CompletionCondition,
-      typename ReadHandler>
-  inline void* asio_handler_allocate(std::size_t size,
-      read_op<AsyncReadStream, MutableBufferSequence, MutableBufferIterator,
-        CompletionCondition, ReadHandler>* this_handler)
-  {
-    return asio_handler_alloc_helpers::allocate(
-        size, this_handler->handler_);
-  }
-
-  template <typename AsyncReadStream, typename MutableBufferSequence,
-      typename MutableBufferIterator, typename CompletionCondition,
-      typename ReadHandler>
-  inline void asio_handler_deallocate(void* pointer, std::size_t size,
-      read_op<AsyncReadStream, MutableBufferSequence, MutableBufferIterator,
-        CompletionCondition, ReadHandler>* this_handler)
-  {
-    asio_handler_alloc_helpers::deallocate(
-        pointer, size, this_handler->handler_);
-  }
-
-  template <typename AsyncReadStream, typename MutableBufferSequence,
-      typename MutableBufferIterator, typename CompletionCondition,
-      typename ReadHandler>
-  inline bool asio_handler_is_continuation(
-      read_op<AsyncReadStream, MutableBufferSequence, MutableBufferIterator,
-        CompletionCondition, ReadHandler>* this_handler)
-  {
-    return this_handler->start_ == 0 ? true
-      : asio_handler_cont_helpers::is_continuation(
-          this_handler->handler_);
-  }
-
-  template <typename Function, typename AsyncReadStream,
-      typename MutableBufferSequence, typename MutableBufferIterator,
-      typename CompletionCondition, typename ReadHandler>
-  inline void asio_handler_invoke(Function& function,
-      read_op<AsyncReadStream, MutableBufferSequence, MutableBufferIterator,
-        CompletionCondition, ReadHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-
-  template <typename Function, typename AsyncReadStream,
-      typename MutableBufferSequence, typename MutableBufferIterator,
-      typename CompletionCondition, typename ReadHandler>
-  inline void asio_handler_invoke(const Function& function,
-      read_op<AsyncReadStream, MutableBufferSequence, MutableBufferIterator,
-        CompletionCondition, ReadHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-
-  template <typename AsyncReadStream, typename MutableBufferSequence,
-      typename MutableBufferIterator, typename CompletionCondition,
-      typename ReadHandler>
-  inline void start_read_buffer_sequence_op(AsyncReadStream& stream,
-      const MutableBufferSequence& buffers, const MutableBufferIterator&,
-      CompletionCondition completion_condition, ReadHandler& handler)
-  {
-    detail::read_op<AsyncReadStream, MutableBufferSequence,
-      MutableBufferIterator, CompletionCondition, ReadHandler>(
-        stream, buffers, completion_condition, handler)(
-          asio::error_code(), 0, 1);
-  }
-} // namespace detail
-
-#if !defined(GENERATING_DOCUMENTATION)
-
-template <typename AsyncReadStream, typename MutableBufferSequence,
-    typename MutableBufferIterator, typename CompletionCondition,
-    typename ReadHandler, typename Allocator>
-struct associated_allocator<
-    detail::read_op<AsyncReadStream, MutableBufferSequence,
-      MutableBufferIterator, CompletionCondition, ReadHandler>,
-    Allocator>
-{
-  typedef typename associated_allocator<ReadHandler, Allocator>::type type;
-
-  static type get(
-      const detail::read_op<AsyncReadStream, MutableBufferSequence,
-        MutableBufferIterator, CompletionCondition, ReadHandler>& h,
-      const Allocator& a = Allocator()) ASIO_NOEXCEPT
-  {
-    return associated_allocator<ReadHandler, Allocator>::get(h.handler_, a);
-  }
-};
-
-template <typename AsyncReadStream, typename MutableBufferSequence,
-    typename MutableBufferIterator, typename CompletionCondition,
-    typename ReadHandler, typename Executor>
-struct associated_executor<
-    detail::read_op<AsyncReadStream, MutableBufferSequence,
-      MutableBufferIterator, CompletionCondition, ReadHandler>,
-    Executor>
-{
-  typedef typename associated_executor<ReadHandler, Executor>::type type;
-
-  static type get(
-      const detail::read_op<AsyncReadStream, MutableBufferSequence,
-        MutableBufferIterator, CompletionCondition, ReadHandler>& h,
-      const Executor& ex = Executor()) ASIO_NOEXCEPT
-  {
-    return associated_executor<ReadHandler, Executor>::get(h.handler_, ex);
-  }
-};
-
-#endif // !defined(GENERATING_DOCUMENTATION)
-
-template <typename AsyncReadStream, typename MutableBufferSequence,
-    typename CompletionCondition, typename ReadHandler>
-inline ASIO_INITFN_RESULT_TYPE(ReadHandler,
-    void (asio::error_code, std::size_t))
-async_read(AsyncReadStream& s, const MutableBufferSequence& buffers,
-    CompletionCondition completion_condition,
-    ASIO_MOVE_ARG(ReadHandler) handler,
-    typename enable_if<
-      is_mutable_buffer_sequence<MutableBufferSequence>::value
-    >::type*)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a ReadHandler.
-  ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
-
-  async_completion<ReadHandler,
-    void (asio::error_code, std::size_t)> init(handler);
-
-  detail::start_read_buffer_sequence_op(s, buffers,
-      asio::buffer_sequence_begin(buffers), completion_condition,
-      init.completion_handler);
-
-  return init.result.get();
-}
-
-template <typename AsyncReadStream, typename MutableBufferSequence,
-    typename ReadHandler>
-inline ASIO_INITFN_RESULT_TYPE(ReadHandler,
-    void (asio::error_code, std::size_t))
-async_read(AsyncReadStream& s, const MutableBufferSequence& buffers,
-    ASIO_MOVE_ARG(ReadHandler) handler,
-    typename enable_if<
-      is_mutable_buffer_sequence<MutableBufferSequence>::value
-    >::type*)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a ReadHandler.
-  ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
-
-  async_completion<ReadHandler,
-    void (asio::error_code, std::size_t)> init(handler);
-
-  detail::start_read_buffer_sequence_op(s, buffers,
-      asio::buffer_sequence_begin(buffers), transfer_all(),
-      init.completion_handler);
-
-  return init.result.get();
-}
-
-namespace detail
-{
-  template <typename AsyncReadStream, typename DynamicBuffer,
-      typename CompletionCondition, typename ReadHandler>
-  class read_dynbuf_op
-    : detail::base_from_completion_cond<CompletionCondition>
-  {
-  public:
-    template <typename BufferSequence>
-    read_dynbuf_op(AsyncReadStream& stream,
-        ASIO_MOVE_ARG(BufferSequence) buffers,
-        CompletionCondition completion_condition, ReadHandler& handler)
-      : detail::base_from_completion_cond<
-          CompletionCondition>(completion_condition),
-        stream_(stream),
-        buffers_(ASIO_MOVE_CAST(BufferSequence)(buffers)),
-        start_(0),
-        total_transferred_(0),
-        handler_(ASIO_MOVE_CAST(ReadHandler)(handler))
-    {
-    }
-
-#if defined(ASIO_HAS_MOVE)
-    read_dynbuf_op(const read_dynbuf_op& other)
-      : detail::base_from_completion_cond<CompletionCondition>(other),
-        stream_(other.stream_),
-        buffers_(other.buffers_),
-        start_(other.start_),
-        total_transferred_(other.total_transferred_),
-        handler_(other.handler_)
-    {
-    }
-
-    read_dynbuf_op(read_dynbuf_op&& other)
-      : detail::base_from_completion_cond<CompletionCondition>(other),
-        stream_(other.stream_),
-        buffers_(ASIO_MOVE_CAST(DynamicBuffer)(other.buffers_)),
-        start_(other.start_),
-        total_transferred_(other.total_transferred_),
-        handler_(ASIO_MOVE_CAST(ReadHandler)(other.handler_))
-    {
-    }
-#endif // defined(ASIO_HAS_MOVE)
-
-    void operator()(const asio::error_code& ec,
-        std::size_t bytes_transferred, int start = 0)
-    {
-      std::size_t max_size, bytes_available;
-      switch (start_ = start)
-      {
-        case 1:
-        max_size = this->check_for_completion(ec, total_transferred_);
-        bytes_available = std::min<std::size_t>(
-              std::max<std::size_t>(512,
-                buffers_.capacity() - buffers_.size()),
-              std::min<std::size_t>(max_size,
-                buffers_.max_size() - buffers_.size()));
-        for (;;)
-        {
-          stream_.async_read_some(buffers_.prepare(bytes_available),
-              ASIO_MOVE_CAST(read_dynbuf_op)(*this));
-          return; default:
-          total_transferred_ += bytes_transferred;
-          buffers_.commit(bytes_transferred);
-          max_size = this->check_for_completion(ec, total_transferred_);
-          bytes_available = std::min<std::size_t>(
-                std::max<std::size_t>(512,
-                  buffers_.capacity() - buffers_.size()),
-                std::min<std::size_t>(max_size,
-                  buffers_.max_size() - buffers_.size()));
-          if ((!ec && bytes_transferred == 0) || bytes_available == 0)
-            break;
-        }
-
-        handler_(ec, static_cast<const std::size_t&>(total_transferred_));
-      }
-    }
-
-  //private:
-    AsyncReadStream& stream_;
-    DynamicBuffer buffers_;
-    int start_;
-    std::size_t total_transferred_;
-    ReadHandler handler_;
-  };
-
-  template <typename AsyncReadStream, typename DynamicBuffer,
-      typename CompletionCondition, typename ReadHandler>
-  inline void* asio_handler_allocate(std::size_t size,
-      read_dynbuf_op<AsyncReadStream, DynamicBuffer,
-        CompletionCondition, ReadHandler>* this_handler)
-  {
-    return asio_handler_alloc_helpers::allocate(
-        size, this_handler->handler_);
-  }
-
-  template <typename AsyncReadStream, typename DynamicBuffer,
-      typename CompletionCondition, typename ReadHandler>
-  inline void asio_handler_deallocate(void* pointer, std::size_t size,
-      read_dynbuf_op<AsyncReadStream, DynamicBuffer,
-        CompletionCondition, ReadHandler>* this_handler)
-  {
-    asio_handler_alloc_helpers::deallocate(
-        pointer, size, this_handler->handler_);
-  }
-
-  template <typename AsyncReadStream, typename DynamicBuffer,
-      typename CompletionCondition, typename ReadHandler>
-  inline bool asio_handler_is_continuation(
-      read_dynbuf_op<AsyncReadStream, DynamicBuffer,
-        CompletionCondition, ReadHandler>* this_handler)
-  {
-    return this_handler->start_ == 0 ? true
-      : asio_handler_cont_helpers::is_continuation(
-          this_handler->handler_);
-  }
-
-  template <typename Function, typename AsyncReadStream,
-      typename DynamicBuffer, typename CompletionCondition,
-      typename ReadHandler>
-  inline void asio_handler_invoke(Function& function,
-      read_dynbuf_op<AsyncReadStream, DynamicBuffer,
-        CompletionCondition, ReadHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-
-  template <typename Function, typename AsyncReadStream,
-      typename DynamicBuffer, typename CompletionCondition,
-      typename ReadHandler>
-  inline void asio_handler_invoke(const Function& function,
-      read_dynbuf_op<AsyncReadStream, DynamicBuffer,
-        CompletionCondition, ReadHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-} // namespace detail
-
-#if !defined(GENERATING_DOCUMENTATION)
-
-template <typename AsyncReadStream, typename DynamicBuffer,
-    typename CompletionCondition, typename ReadHandler, typename Allocator>
-struct associated_allocator<
-    detail::read_dynbuf_op<AsyncReadStream,
-      DynamicBuffer, CompletionCondition, ReadHandler>,
-    Allocator>
-{
-  typedef typename associated_allocator<ReadHandler, Allocator>::type type;
-
-  static type get(
-      const detail::read_dynbuf_op<AsyncReadStream,
-        DynamicBuffer, CompletionCondition, ReadHandler>& h,
-      const Allocator& a = Allocator()) ASIO_NOEXCEPT
-  {
-    return associated_allocator<ReadHandler, Allocator>::get(h.handler_, a);
-  }
-};
-
-template <typename AsyncReadStream, typename DynamicBuffer,
-    typename CompletionCondition, typename ReadHandler, typename Executor>
-struct associated_executor<
-    detail::read_dynbuf_op<AsyncReadStream,
-      DynamicBuffer, CompletionCondition, ReadHandler>,
-    Executor>
-{
-  typedef typename associated_executor<ReadHandler, Executor>::type type;
-
-  static type get(
-      const detail::read_dynbuf_op<AsyncReadStream,
-        DynamicBuffer, CompletionCondition, ReadHandler>& h,
-      const Executor& ex = Executor()) ASIO_NOEXCEPT
-  {
-    return associated_executor<ReadHandler, Executor>::get(h.handler_, ex);
-  }
-};
-
-#endif // !defined(GENERATING_DOCUMENTATION)
-
-template <typename AsyncReadStream,
-    typename DynamicBuffer, typename ReadHandler>
-inline ASIO_INITFN_RESULT_TYPE(ReadHandler,
-    void (asio::error_code, std::size_t))
-async_read(AsyncReadStream& s,
-    ASIO_MOVE_ARG(DynamicBuffer) buffers,
-    ASIO_MOVE_ARG(ReadHandler) handler,
-    typename enable_if<
-      is_dynamic_buffer<typename decay<DynamicBuffer>::type>::value
-    >::type*)
-{
-  return async_read(s,
-      ASIO_MOVE_CAST(DynamicBuffer)(buffers),
-      transfer_all(), ASIO_MOVE_CAST(ReadHandler)(handler));
-}
-
-template <typename AsyncReadStream, typename DynamicBuffer,
-    typename CompletionCondition, typename ReadHandler>
-inline ASIO_INITFN_RESULT_TYPE(ReadHandler,
-    void (asio::error_code, std::size_t))
-async_read(AsyncReadStream& s,
-    ASIO_MOVE_ARG(DynamicBuffer) buffers,
-    CompletionCondition completion_condition,
-    ASIO_MOVE_ARG(ReadHandler) handler,
-    typename enable_if<
-      is_dynamic_buffer<typename decay<DynamicBuffer>::type>::value
-    >::type*)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a ReadHandler.
-  ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
-
-  async_completion<ReadHandler,
-    void (asio::error_code, std::size_t)> init(handler);
-
-  detail::read_dynbuf_op<AsyncReadStream,
-    typename decay<DynamicBuffer>::type,
-      CompletionCondition, ASIO_HANDLER_TYPE(
-        ReadHandler, void (asio::error_code, std::size_t))>(
-          s, ASIO_MOVE_CAST(DynamicBuffer)(buffers),
-            completion_condition, init.completion_handler)(
-              asio::error_code(), 0, 1);
-
-  return init.result.get();
-}
-
-#if !defined(ASIO_NO_EXTENSIONS)
-#if !defined(ASIO_NO_IOSTREAM)
-
-template <typename AsyncReadStream, typename Allocator, typename ReadHandler>
-inline ASIO_INITFN_RESULT_TYPE(ReadHandler,
-    void (asio::error_code, std::size_t))
-async_read(AsyncReadStream& s, basic_streambuf<Allocator>& b,
-    ASIO_MOVE_ARG(ReadHandler) handler)
-{
-  return async_read(s, basic_streambuf_ref<Allocator>(b),
-      ASIO_MOVE_CAST(ReadHandler)(handler));
-}
-
-template <typename AsyncReadStream, typename Allocator,
-    typename CompletionCondition, typename ReadHandler>
-inline ASIO_INITFN_RESULT_TYPE(ReadHandler,
-    void (asio::error_code, std::size_t))
-async_read(AsyncReadStream& s, basic_streambuf<Allocator>& b,
-    CompletionCondition completion_condition,
-    ASIO_MOVE_ARG(ReadHandler) handler)
-{
-  return async_read(s, basic_streambuf_ref<Allocator>(b),
-      completion_condition, ASIO_MOVE_CAST(ReadHandler)(handler));
-}
-
-#endif // !defined(ASIO_NO_IOSTREAM)
-#endif // !defined(ASIO_NO_EXTENSIONS)
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_IMPL_READ_HPP
diff --git a/lib/asio/impl/read_at.hpp b/lib/asio/impl/read_at.hpp
deleted file mode 100644
index d736d4d..0000000
--- a/lib/asio/impl/read_at.hpp
+++ /dev/null
@@ -1,640 +0,0 @@
-//
-// impl/read_at.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_IMPL_READ_AT_HPP
-#define ASIO_IMPL_READ_AT_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include <algorithm>
-#include "asio/associated_allocator.hpp"
-#include "asio/associated_executor.hpp"
-#include "asio/buffer.hpp"
-#include "asio/completion_condition.hpp"
-#include "asio/detail/array_fwd.hpp"
-#include "asio/detail/base_from_completion_cond.hpp"
-#include "asio/detail/bind_handler.hpp"
-#include "asio/detail/consuming_buffers.hpp"
-#include "asio/detail/dependent_type.hpp"
-#include "asio/detail/handler_alloc_helpers.hpp"
-#include "asio/detail/handler_cont_helpers.hpp"
-#include "asio/detail/handler_invoke_helpers.hpp"
-#include "asio/detail/handler_type_requirements.hpp"
-#include "asio/detail/throw_error.hpp"
-#include "asio/error.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-namespace detail
-{
-  template <typename SyncRandomAccessReadDevice, typename MutableBufferSequence,
-      typename MutableBufferIterator, typename CompletionCondition>
-  std::size_t read_at_buffer_sequence(SyncRandomAccessReadDevice& d,
-      uint64_t offset, const MutableBufferSequence& buffers,
-      const MutableBufferIterator&, CompletionCondition completion_condition,
-      asio::error_code& ec)
-  {
-    ec = asio::error_code();
-    asio::detail::consuming_buffers<mutable_buffer,
-        MutableBufferSequence, MutableBufferIterator> tmp(buffers);
-    while (!tmp.empty())
-    {
-      if (std::size_t max_size = detail::adapt_completion_condition_result(
-            completion_condition(ec, tmp.total_consumed())))
-      {
-        tmp.consume(d.read_some_at(offset + tmp.total_consumed(),
-              tmp.prepare(max_size), ec));
-      }
-      else
-        break;
-    }
-    return tmp.total_consumed();;
-  }
-} // namespace detail
-
-template <typename SyncRandomAccessReadDevice, typename MutableBufferSequence,
-    typename CompletionCondition>
-std::size_t read_at(SyncRandomAccessReadDevice& d,
-    uint64_t offset, const MutableBufferSequence& buffers,
-    CompletionCondition completion_condition, asio::error_code& ec)
-{
-  return detail::read_at_buffer_sequence(d, offset, buffers,
-      asio::buffer_sequence_begin(buffers), completion_condition, ec);
-}
-
-template <typename SyncRandomAccessReadDevice, typename MutableBufferSequence>
-inline std::size_t read_at(SyncRandomAccessReadDevice& d,
-    uint64_t offset, const MutableBufferSequence& buffers)
-{
-  asio::error_code ec;
-  std::size_t bytes_transferred = read_at(
-      d, offset, buffers, transfer_all(), ec);
-  asio::detail::throw_error(ec, "read_at");
-  return bytes_transferred;
-}
-
-template <typename SyncRandomAccessReadDevice, typename MutableBufferSequence>
-inline std::size_t read_at(SyncRandomAccessReadDevice& d,
-    uint64_t offset, const MutableBufferSequence& buffers,
-    asio::error_code& ec)
-{
-  return read_at(d, offset, buffers, transfer_all(), ec);
-}
-
-template <typename SyncRandomAccessReadDevice, typename MutableBufferSequence,
-    typename CompletionCondition>
-inline std::size_t read_at(SyncRandomAccessReadDevice& d,
-    uint64_t offset, const MutableBufferSequence& buffers,
-    CompletionCondition completion_condition)
-{
-  asio::error_code ec;
-  std::size_t bytes_transferred = read_at(
-      d, offset, buffers, completion_condition, ec);
-  asio::detail::throw_error(ec, "read_at");
-  return bytes_transferred;
-}
-
-#if !defined(ASIO_NO_EXTENSIONS)
-#if !defined(ASIO_NO_IOSTREAM)
-
-template <typename SyncRandomAccessReadDevice, typename Allocator,
-    typename CompletionCondition>
-std::size_t read_at(SyncRandomAccessReadDevice& d,
-    uint64_t offset, asio::basic_streambuf<Allocator>& b,
-    CompletionCondition completion_condition, asio::error_code& ec)
-{
-  ec = asio::error_code();
-  std::size_t total_transferred = 0;
-  std::size_t max_size = detail::adapt_completion_condition_result(
-        completion_condition(ec, total_transferred));
-  std::size_t bytes_available = read_size_helper(b, max_size);
-  while (bytes_available > 0)
-  {
-    std::size_t bytes_transferred = d.read_some_at(
-        offset + total_transferred, b.prepare(bytes_available), ec);
-    b.commit(bytes_transferred);
-    total_transferred += bytes_transferred;
-    max_size = detail::adapt_completion_condition_result(
-          completion_condition(ec, total_transferred));
-    bytes_available = read_size_helper(b, max_size);
-  }
-  return total_transferred;
-}
-
-template <typename SyncRandomAccessReadDevice, typename Allocator>
-inline std::size_t read_at(SyncRandomAccessReadDevice& d,
-    uint64_t offset, asio::basic_streambuf<Allocator>& b)
-{
-  asio::error_code ec;
-  std::size_t bytes_transferred = read_at(
-      d, offset, b, transfer_all(), ec);
-  asio::detail::throw_error(ec, "read_at");
-  return bytes_transferred;
-}
-
-template <typename SyncRandomAccessReadDevice, typename Allocator>
-inline std::size_t read_at(SyncRandomAccessReadDevice& d,
-    uint64_t offset, asio::basic_streambuf<Allocator>& b,
-    asio::error_code& ec)
-{
-  return read_at(d, offset, b, transfer_all(), ec);
-}
-
-template <typename SyncRandomAccessReadDevice, typename Allocator,
-    typename CompletionCondition>
-inline std::size_t read_at(SyncRandomAccessReadDevice& d,
-    uint64_t offset, asio::basic_streambuf<Allocator>& b,
-    CompletionCondition completion_condition)
-{
-  asio::error_code ec;
-  std::size_t bytes_transferred = read_at(
-      d, offset, b, completion_condition, ec);
-  asio::detail::throw_error(ec, "read_at");
-  return bytes_transferred;
-}
-
-#endif // !defined(ASIO_NO_IOSTREAM)
-#endif // !defined(ASIO_NO_EXTENSIONS)
-
-namespace detail
-{
-  template <typename AsyncRandomAccessReadDevice,
-      typename MutableBufferSequence, typename MutableBufferIterator,
-      typename CompletionCondition, typename ReadHandler>
-  class read_at_op
-    : detail::base_from_completion_cond<CompletionCondition>
-  {
-  public:
-    read_at_op(AsyncRandomAccessReadDevice& device,
-        uint64_t offset, const MutableBufferSequence& buffers,
-        CompletionCondition completion_condition, ReadHandler& handler)
-      : detail::base_from_completion_cond<
-          CompletionCondition>(completion_condition),
-        device_(device),
-        offset_(offset),
-        buffers_(buffers),
-        start_(0),
-        handler_(ASIO_MOVE_CAST(ReadHandler)(handler))
-    {
-    }
-
-#if defined(ASIO_HAS_MOVE)
-    read_at_op(const read_at_op& other)
-      : detail::base_from_completion_cond<CompletionCondition>(other),
-        device_(other.device_),
-        offset_(other.offset_),
-        buffers_(other.buffers_),
-        start_(other.start_),
-        handler_(other.handler_)
-    {
-    }
-
-    read_at_op(read_at_op&& other)
-      : detail::base_from_completion_cond<CompletionCondition>(other),
-        device_(other.device_),
-        offset_(other.offset_),
-        buffers_(other.buffers_),
-        start_(other.start_),
-        handler_(ASIO_MOVE_CAST(ReadHandler)(other.handler_))
-    {
-    }
-#endif // defined(ASIO_HAS_MOVE)
-
-    void operator()(const asio::error_code& ec,
-        std::size_t bytes_transferred, int start = 0)
-    {
-      std::size_t max_size;
-      switch (start_ = start)
-      {
-        case 1:
-        max_size = this->check_for_completion(ec, buffers_.total_consumed());
-        do
-        {
-          device_.async_read_some_at(
-              offset_ + buffers_.total_consumed(), buffers_.prepare(max_size),
-              ASIO_MOVE_CAST(read_at_op)(*this));
-          return; default:
-          buffers_.consume(bytes_transferred);
-          if ((!ec && bytes_transferred == 0) || buffers_.empty())
-            break;
-          max_size = this->check_for_completion(ec, buffers_.total_consumed());
-        } while (max_size > 0);
-
-        handler_(ec, buffers_.total_consumed());
-      }
-    }
-
-  //private:
-    AsyncRandomAccessReadDevice& device_;
-    uint64_t offset_;
-    asio::detail::consuming_buffers<mutable_buffer,
-        MutableBufferSequence, MutableBufferIterator> buffers_;
-    int start_;
-    ReadHandler handler_;
-  };
-
-  template <typename AsyncRandomAccessReadDevice,
-      typename MutableBufferSequence, typename MutableBufferIterator,
-      typename CompletionCondition, typename ReadHandler>
-  inline void* asio_handler_allocate(std::size_t size,
-      read_at_op<AsyncRandomAccessReadDevice, MutableBufferSequence,
-        MutableBufferIterator, CompletionCondition, ReadHandler>* this_handler)
-  {
-    return asio_handler_alloc_helpers::allocate(
-        size, this_handler->handler_);
-  }
-
-  template <typename AsyncRandomAccessReadDevice,
-      typename MutableBufferSequence, typename MutableBufferIterator,
-      typename CompletionCondition, typename ReadHandler>
-  inline void asio_handler_deallocate(void* pointer, std::size_t size,
-      read_at_op<AsyncRandomAccessReadDevice, MutableBufferSequence,
-        MutableBufferIterator, CompletionCondition, ReadHandler>* this_handler)
-  {
-    asio_handler_alloc_helpers::deallocate(
-        pointer, size, this_handler->handler_);
-  }
-
-  template <typename AsyncRandomAccessReadDevice,
-      typename MutableBufferSequence, typename MutableBufferIterator,
-      typename CompletionCondition, typename ReadHandler>
-  inline bool asio_handler_is_continuation(
-      read_at_op<AsyncRandomAccessReadDevice, MutableBufferSequence,
-        MutableBufferIterator, CompletionCondition, ReadHandler>* this_handler)
-  {
-    return this_handler->start_ == 0 ? true
-      : asio_handler_cont_helpers::is_continuation(
-          this_handler->handler_);
-  }
-
-  template <typename Function, typename AsyncRandomAccessReadDevice,
-      typename MutableBufferSequence, typename MutableBufferIterator,
-      typename CompletionCondition, typename ReadHandler>
-  inline void asio_handler_invoke(Function& function,
-      read_at_op<AsyncRandomAccessReadDevice, MutableBufferSequence,
-        MutableBufferIterator, CompletionCondition, ReadHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-
-  template <typename Function, typename AsyncRandomAccessReadDevice,
-      typename MutableBufferSequence, typename MutableBufferIterator,
-      typename CompletionCondition, typename ReadHandler>
-  inline void asio_handler_invoke(const Function& function,
-      read_at_op<AsyncRandomAccessReadDevice, MutableBufferSequence,
-        MutableBufferIterator, CompletionCondition, ReadHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-
-  template <typename AsyncRandomAccessReadDevice,
-      typename MutableBufferSequence, typename MutableBufferIterator,
-      typename CompletionCondition, typename ReadHandler>
-  inline void start_read_at_buffer_sequence_op(AsyncRandomAccessReadDevice& d,
-      uint64_t offset, const MutableBufferSequence& buffers,
-      const MutableBufferIterator&, CompletionCondition completion_condition,
-      ReadHandler& handler)
-  {
-    detail::read_at_op<AsyncRandomAccessReadDevice, MutableBufferSequence,
-      MutableBufferIterator, CompletionCondition, ReadHandler>(
-        d, offset, buffers, completion_condition, handler)(
-          asio::error_code(), 0, 1);
-  }
-} // namespace detail
-
-#if !defined(GENERATING_DOCUMENTATION)
-
-template <typename AsyncRandomAccessReadDevice,
-    typename MutableBufferSequence, typename MutableBufferIterator,
-    typename CompletionCondition, typename ReadHandler, typename Allocator>
-struct associated_allocator<
-    detail::read_at_op<AsyncRandomAccessReadDevice, MutableBufferSequence,
-    MutableBufferIterator, CompletionCondition, ReadHandler>,
-    Allocator>
-{
-  typedef typename associated_allocator<ReadHandler, Allocator>::type type;
-
-  static type get(
-      const detail::read_at_op<AsyncRandomAccessReadDevice,
-      MutableBufferSequence, MutableBufferIterator,
-      CompletionCondition, ReadHandler>& h,
-      const Allocator& a = Allocator()) ASIO_NOEXCEPT
-  {
-    return associated_allocator<ReadHandler, Allocator>::get(h.handler_, a);
-  }
-};
-
-template <typename AsyncRandomAccessReadDevice,
-    typename MutableBufferSequence, typename MutableBufferIterator,
-    typename CompletionCondition, typename ReadHandler, typename Executor>
-struct associated_executor<
-    detail::read_at_op<AsyncRandomAccessReadDevice, MutableBufferSequence,
-    MutableBufferIterator, CompletionCondition, ReadHandler>,
-    Executor>
-{
-  typedef typename associated_executor<ReadHandler, Executor>::type type;
-
-  static type get(
-      const detail::read_at_op<AsyncRandomAccessReadDevice,
-      MutableBufferSequence, MutableBufferIterator,
-      CompletionCondition, ReadHandler>& h,
-      const Executor& ex = Executor()) ASIO_NOEXCEPT
-  {
-    return associated_executor<ReadHandler, Executor>::get(h.handler_, ex);
-  }
-};
-
-#endif // !defined(GENERATING_DOCUMENTATION)
-
-template <typename AsyncRandomAccessReadDevice, typename MutableBufferSequence,
-    typename CompletionCondition, typename ReadHandler>
-inline ASIO_INITFN_RESULT_TYPE(ReadHandler,
-    void (asio::error_code, std::size_t))
-async_read_at(AsyncRandomAccessReadDevice& d,
-    uint64_t offset, const MutableBufferSequence& buffers,
-    CompletionCondition completion_condition,
-    ASIO_MOVE_ARG(ReadHandler) handler)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a ReadHandler.
-  ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
-
-  async_completion<ReadHandler,
-    void (asio::error_code, std::size_t)> init(handler);
-
-  detail::start_read_at_buffer_sequence_op(d, offset, buffers,
-      asio::buffer_sequence_begin(buffers), completion_condition,
-      init.completion_handler);
-
-  return init.result.get();
-}
-
-template <typename AsyncRandomAccessReadDevice, typename MutableBufferSequence,
-    typename ReadHandler>
-inline ASIO_INITFN_RESULT_TYPE(ReadHandler,
-    void (asio::error_code, std::size_t))
-async_read_at(AsyncRandomAccessReadDevice& d,
-    uint64_t offset, const MutableBufferSequence& buffers,
-    ASIO_MOVE_ARG(ReadHandler) handler)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a ReadHandler.
-  ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
-
-  async_completion<ReadHandler,
-    void (asio::error_code, std::size_t)> init(handler);
-
-  detail::start_read_at_buffer_sequence_op(d, offset, buffers,
-      asio::buffer_sequence_begin(buffers), transfer_all(),
-      init.completion_handler);
-
-  return init.result.get();
-}
-
-#if !defined(ASIO_NO_EXTENSIONS)
-#if !defined(ASIO_NO_IOSTREAM)
-
-namespace detail
-{
-  template <typename AsyncRandomAccessReadDevice, typename Allocator,
-      typename CompletionCondition, typename ReadHandler>
-  class read_at_streambuf_op
-    : detail::base_from_completion_cond<CompletionCondition>
-  {
-  public:
-    read_at_streambuf_op(AsyncRandomAccessReadDevice& device,
-        uint64_t offset, basic_streambuf<Allocator>& streambuf,
-        CompletionCondition completion_condition, ReadHandler& handler)
-      : detail::base_from_completion_cond<
-          CompletionCondition>(completion_condition),
-        device_(device),
-        offset_(offset),
-        streambuf_(streambuf),
-        start_(0),
-        total_transferred_(0),
-        handler_(ASIO_MOVE_CAST(ReadHandler)(handler))
-    {
-    }
-
-#if defined(ASIO_HAS_MOVE)
-    read_at_streambuf_op(const read_at_streambuf_op& other)
-      : detail::base_from_completion_cond<CompletionCondition>(other),
-        device_(other.device_),
-        offset_(other.offset_),
-        streambuf_(other.streambuf_),
-        start_(other.start_),
-        total_transferred_(other.total_transferred_),
-        handler_(other.handler_)
-    {
-    }
-
-    read_at_streambuf_op(read_at_streambuf_op&& other)
-      : detail::base_from_completion_cond<CompletionCondition>(other),
-        device_(other.device_),
-        offset_(other.offset_),
-        streambuf_(other.streambuf_),
-        start_(other.start_),
-        total_transferred_(other.total_transferred_),
-        handler_(ASIO_MOVE_CAST(ReadHandler)(other.handler_))
-    {
-    }
-#endif // defined(ASIO_HAS_MOVE)
-
-    void operator()(const asio::error_code& ec,
-        std::size_t bytes_transferred, int start = 0)
-    {
-      std::size_t max_size, bytes_available;
-      switch (start_ = start)
-      {
-        case 1:
-        max_size = this->check_for_completion(ec, total_transferred_);
-        bytes_available = read_size_helper(streambuf_, max_size);
-        for (;;)
-        {
-          device_.async_read_some_at(offset_ + total_transferred_,
-              streambuf_.prepare(bytes_available),
-              ASIO_MOVE_CAST(read_at_streambuf_op)(*this));
-          return; default:
-          total_transferred_ += bytes_transferred;
-          streambuf_.commit(bytes_transferred);
-          max_size = this->check_for_completion(ec, total_transferred_);
-          bytes_available = read_size_helper(streambuf_, max_size);
-          if ((!ec && bytes_transferred == 0) || bytes_available == 0)
-            break;
-        }
-
-        handler_(ec, static_cast<const std::size_t&>(total_transferred_));
-      }
-    }
-
-  //private:
-    AsyncRandomAccessReadDevice& device_;
-    uint64_t offset_;
-    asio::basic_streambuf<Allocator>& streambuf_;
-    int start_;
-    std::size_t total_transferred_;
-    ReadHandler handler_;
-  };
-
-  template <typename AsyncRandomAccessReadDevice, typename Allocator,
-      typename CompletionCondition, typename ReadHandler>
-  inline void* asio_handler_allocate(std::size_t size,
-      read_at_streambuf_op<AsyncRandomAccessReadDevice, Allocator,
-        CompletionCondition, ReadHandler>* this_handler)
-  {
-    return asio_handler_alloc_helpers::allocate(
-        size, this_handler->handler_);
-  }
-
-  template <typename AsyncRandomAccessReadDevice, typename Allocator,
-      typename CompletionCondition, typename ReadHandler>
-  inline void asio_handler_deallocate(void* pointer, std::size_t size,
-      read_at_streambuf_op<AsyncRandomAccessReadDevice, Allocator,
-        CompletionCondition, ReadHandler>* this_handler)
-  {
-    asio_handler_alloc_helpers::deallocate(
-        pointer, size, this_handler->handler_);
-  }
-
-  template <typename AsyncRandomAccessReadDevice, typename Allocator,
-      typename CompletionCondition, typename ReadHandler>
-  inline bool asio_handler_is_continuation(
-      read_at_streambuf_op<AsyncRandomAccessReadDevice, Allocator,
-        CompletionCondition, ReadHandler>* this_handler)
-  {
-    return this_handler->start_ == 0 ? true
-      : asio_handler_cont_helpers::is_continuation(
-          this_handler->handler_);
-  }
-
-  template <typename Function, typename AsyncRandomAccessReadDevice,
-      typename Allocator, typename CompletionCondition, typename ReadHandler>
-  inline void asio_handler_invoke(Function& function,
-      read_at_streambuf_op<AsyncRandomAccessReadDevice, Allocator,
-        CompletionCondition, ReadHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-
-  template <typename Function, typename AsyncRandomAccessReadDevice,
-      typename Allocator, typename CompletionCondition, typename ReadHandler>
-  inline void asio_handler_invoke(const Function& function,
-      read_at_streambuf_op<AsyncRandomAccessReadDevice, Allocator,
-        CompletionCondition, ReadHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-} // namespace detail
-
-#if !defined(GENERATING_DOCUMENTATION)
-
-template <typename AsyncRandomAccessReadDevice, typename Allocator,
-    typename CompletionCondition, typename ReadHandler, typename Allocator1>
-struct associated_allocator<
-    detail::read_at_streambuf_op<AsyncRandomAccessReadDevice,
-      Allocator, CompletionCondition, ReadHandler>,
-    Allocator1>
-{
-  typedef typename associated_allocator<ReadHandler, Allocator1>::type type;
-
-  static type get(
-      const detail::read_at_streambuf_op<AsyncRandomAccessReadDevice,
-        Allocator, CompletionCondition, ReadHandler>& h,
-      const Allocator1& a = Allocator1()) ASIO_NOEXCEPT
-  {
-    return associated_allocator<ReadHandler, Allocator1>::get(h.handler_, a);
-  }
-};
-
-template <typename AsyncRandomAccessReadDevice, typename Executor,
-    typename CompletionCondition, typename ReadHandler, typename Executor1>
-struct associated_executor<
-    detail::read_at_streambuf_op<AsyncRandomAccessReadDevice,
-      Executor, CompletionCondition, ReadHandler>,
-    Executor1>
-{
-  typedef typename associated_executor<ReadHandler, Executor1>::type type;
-
-  static type get(
-      const detail::read_at_streambuf_op<AsyncRandomAccessReadDevice,
-        Executor, CompletionCondition, ReadHandler>& h,
-      const Executor1& ex = Executor1()) ASIO_NOEXCEPT
-  {
-    return associated_executor<ReadHandler, Executor1>::get(h.handler_, ex);
-  }
-};
-
-#endif // !defined(GENERATING_DOCUMENTATION)
-
-template <typename AsyncRandomAccessReadDevice, typename Allocator,
-    typename CompletionCondition, typename ReadHandler>
-inline ASIO_INITFN_RESULT_TYPE(ReadHandler,
-    void (asio::error_code, std::size_t))
-async_read_at(AsyncRandomAccessReadDevice& d,
-    uint64_t offset, asio::basic_streambuf<Allocator>& b,
-    CompletionCondition completion_condition,
-    ASIO_MOVE_ARG(ReadHandler) handler)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a ReadHandler.
-  ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
-
-  async_completion<ReadHandler,
-    void (asio::error_code, std::size_t)> init(handler);
-
-  detail::read_at_streambuf_op<AsyncRandomAccessReadDevice, Allocator,
-    CompletionCondition, ASIO_HANDLER_TYPE(ReadHandler,
-      void (asio::error_code, std::size_t))>(
-        d, offset, b, completion_condition, init.completion_handler)(
-          asio::error_code(), 0, 1);
-
-  return init.result.get();
-}
-
-template <typename AsyncRandomAccessReadDevice, typename Allocator,
-    typename ReadHandler>
-inline ASIO_INITFN_RESULT_TYPE(ReadHandler,
-    void (asio::error_code, std::size_t))
-async_read_at(AsyncRandomAccessReadDevice& d,
-    uint64_t offset, asio::basic_streambuf<Allocator>& b,
-    ASIO_MOVE_ARG(ReadHandler) handler)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a ReadHandler.
-  ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
-
-  async_completion<ReadHandler,
-    void (asio::error_code, std::size_t)> init(handler);
-
-  detail::read_at_streambuf_op<AsyncRandomAccessReadDevice, Allocator,
-    detail::transfer_all_t, ASIO_HANDLER_TYPE(ReadHandler,
-      void (asio::error_code, std::size_t))>(
-        d, offset, b, transfer_all(), init.completion_handler)(
-          asio::error_code(), 0, 1);
-
-  return init.result.get();
-}
-
-#endif // !defined(ASIO_NO_IOSTREAM)
-#endif // !defined(ASIO_NO_EXTENSIONS)
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_IMPL_READ_AT_HPP
diff --git a/lib/asio/impl/read_until.hpp b/lib/asio/impl/read_until.hpp
deleted file mode 100644
index 1f39e19..0000000
--- a/lib/asio/impl/read_until.hpp
+++ /dev/null
@@ -1,1500 +0,0 @@
-//
-// impl/read_until.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_IMPL_READ_UNTIL_HPP
-#define ASIO_IMPL_READ_UNTIL_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include <algorithm>
-#include <string>
-#include <vector>
-#include <utility>
-#include "asio/associated_allocator.hpp"
-#include "asio/associated_executor.hpp"
-#include "asio/buffer.hpp"
-#include "asio/buffers_iterator.hpp"
-#include "asio/detail/bind_handler.hpp"
-#include "asio/detail/handler_alloc_helpers.hpp"
-#include "asio/detail/handler_cont_helpers.hpp"
-#include "asio/detail/handler_invoke_helpers.hpp"
-#include "asio/detail/handler_type_requirements.hpp"
-#include "asio/detail/limits.hpp"
-#include "asio/detail/throw_error.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-template <typename SyncReadStream, typename DynamicBuffer>
-inline std::size_t read_until(SyncReadStream& s,
-    ASIO_MOVE_ARG(DynamicBuffer) buffers, char delim)
-{
-  asio::error_code ec;
-  std::size_t bytes_transferred = read_until(s,
-      ASIO_MOVE_CAST(DynamicBuffer)(buffers), delim, ec);
-  asio::detail::throw_error(ec, "read_until");
-  return bytes_transferred;
-}
-
-template <typename SyncReadStream, typename DynamicBuffer>
-std::size_t read_until(SyncReadStream& s,
-    ASIO_MOVE_ARG(DynamicBuffer) buffers,
-    char delim, asio::error_code& ec)
-{
-  typename decay<DynamicBuffer>::type b(
-      ASIO_MOVE_CAST(DynamicBuffer)(buffers));
-
-  std::size_t search_position = 0;
-  for (;;)
-  {
-    // Determine the range of the data to be searched.
-    typedef typename DynamicBuffer::const_buffers_type buffers_type;
-    typedef buffers_iterator<buffers_type> iterator;
-    buffers_type data_buffers = b.data();
-    iterator begin = iterator::begin(data_buffers);
-    iterator start_pos = begin + search_position;
-    iterator end = iterator::end(data_buffers);
-
-    // Look for a match.
-    iterator iter = std::find(start_pos, end, delim);
-    if (iter != end)
-    {
-      // Found a match. We're done.
-      ec = asio::error_code();
-      return iter - begin + 1;
-    }
-    else
-    {
-      // No match. Next search can start with the new data.
-      search_position = end - begin;
-    }
-
-    // Check if buffer is full.
-    if (b.size() == b.max_size())
-    {
-      ec = error::not_found;
-      return 0;
-    }
-
-    // Need more data.
-    std::size_t bytes_to_read = std::min<std::size_t>(
-          std::max<std::size_t>(512, b.capacity() - b.size()),
-          std::min<std::size_t>(65536, b.max_size() - b.size()));
-    b.commit(s.read_some(b.prepare(bytes_to_read), ec));
-    if (ec)
-      return 0;
-  }
-}
-
-template <typename SyncReadStream, typename DynamicBuffer>
-inline std::size_t read_until(SyncReadStream& s,
-    ASIO_MOVE_ARG(DynamicBuffer) buffers,
-    ASIO_STRING_VIEW_PARAM delim)
-{
-  asio::error_code ec;
-  std::size_t bytes_transferred = read_until(s,
-      ASIO_MOVE_CAST(DynamicBuffer)(buffers), delim, ec);
-  asio::detail::throw_error(ec, "read_until");
-  return bytes_transferred;
-}
-
-namespace detail
-{
-  // Algorithm that finds a subsequence of equal values in a sequence. Returns
-  // (iterator,true) if a full match was found, in which case the iterator
-  // points to the beginning of the match. Returns (iterator,false) if a
-  // partial match was found at the end of the first sequence, in which case
-  // the iterator points to the beginning of the partial match. Returns
-  // (last1,false) if no full or partial match was found.
-  template <typename Iterator1, typename Iterator2>
-  std::pair<Iterator1, bool> partial_search(
-      Iterator1 first1, Iterator1 last1, Iterator2 first2, Iterator2 last2)
-  {
-    for (Iterator1 iter1 = first1; iter1 != last1; ++iter1)
-    {
-      Iterator1 test_iter1 = iter1;
-      Iterator2 test_iter2 = first2;
-      for (;; ++test_iter1, ++test_iter2)
-      {
-        if (test_iter2 == last2)
-          return std::make_pair(iter1, true);
-        if (test_iter1 == last1)
-        {
-          if (test_iter2 != first2)
-            return std::make_pair(iter1, false);
-          else
-            break;
-        }
-        if (*test_iter1 != *test_iter2)
-          break;
-      }
-    }
-    return std::make_pair(last1, false);
-  }
-} // namespace detail
-
-template <typename SyncReadStream, typename DynamicBuffer>
-std::size_t read_until(SyncReadStream& s,
-    ASIO_MOVE_ARG(DynamicBuffer) buffers,
-    ASIO_STRING_VIEW_PARAM delim, asio::error_code& ec)
-{
-  typename decay<DynamicBuffer>::type b(
-      ASIO_MOVE_CAST(DynamicBuffer)(buffers));
-
-  std::size_t search_position = 0;
-  for (;;)
-  {
-    // Determine the range of the data to be searched.
-    typedef typename DynamicBuffer::const_buffers_type buffers_type;
-    typedef buffers_iterator<buffers_type> iterator;
-    buffers_type data_buffers = b.data();
-    iterator begin = iterator::begin(data_buffers);
-    iterator start_pos = begin + search_position;
-    iterator end = iterator::end(data_buffers);
-
-    // Look for a match.
-    std::pair<iterator, bool> result = detail::partial_search(
-        start_pos, end, delim.begin(), delim.end());
-    if (result.first != end)
-    {
-      if (result.second)
-      {
-        // Full match. We're done.
-        ec = asio::error_code();
-        return result.first - begin + delim.length();
-      }
-      else
-      {
-        // Partial match. Next search needs to start from beginning of match.
-        search_position = result.first - begin;
-      }
-    }
-    else
-    {
-      // No match. Next search can start with the new data.
-      search_position = end - begin;
-    }
-
-    // Check if buffer is full.
-    if (b.size() == b.max_size())
-    {
-      ec = error::not_found;
-      return 0;
-    }
-
-    // Need more data.
-    std::size_t bytes_to_read = std::min<std::size_t>(
-          std::max<std::size_t>(512, b.capacity() - b.size()),
-          std::min<std::size_t>(65536, b.max_size() - b.size()));
-    b.commit(s.read_some(b.prepare(bytes_to_read), ec));
-    if (ec)
-      return 0;
-  }
-}
-
-#if !defined(ASIO_NO_EXTENSIONS)
-#if defined(ASIO_HAS_BOOST_REGEX)
-
-template <typename SyncReadStream, typename DynamicBuffer>
-inline std::size_t read_until(SyncReadStream& s,
-    ASIO_MOVE_ARG(DynamicBuffer) buffers,
-    const boost::regex& expr)
-{
-  asio::error_code ec;
-  std::size_t bytes_transferred = read_until(s,
-      ASIO_MOVE_CAST(DynamicBuffer)(buffers), expr, ec);
-  asio::detail::throw_error(ec, "read_until");
-  return bytes_transferred;
-}
-
-template <typename SyncReadStream, typename DynamicBuffer>
-std::size_t read_until(SyncReadStream& s,
-    ASIO_MOVE_ARG(DynamicBuffer) buffers,
-    const boost::regex& expr, asio::error_code& ec)
-{
-  typename decay<DynamicBuffer>::type b(
-      ASIO_MOVE_CAST(DynamicBuffer)(buffers));
-
-  std::size_t search_position = 0;
-  for (;;)
-  {
-    // Determine the range of the data to be searched.
-    typedef typename DynamicBuffer::const_buffers_type buffers_type;
-    typedef buffers_iterator<buffers_type> iterator;
-    buffers_type data_buffers = b.data();
-    iterator begin = iterator::begin(data_buffers);
-    iterator start_pos = begin + search_position;
-    iterator end = iterator::end(data_buffers);
-
-    // Look for a match.
-    boost::match_results<iterator,
-      typename std::vector<boost::sub_match<iterator> >::allocator_type>
-        match_results;
-    if (regex_search(start_pos, end, match_results, expr,
-          boost::match_default | boost::match_partial))
-    {
-      if (match_results[0].matched)
-      {
-        // Full match. We're done.
-        ec = asio::error_code();
-        return match_results[0].second - begin;
-      }
-      else
-      {
-        // Partial match. Next search needs to start from beginning of match.
-        search_position = match_results[0].first - begin;
-      }
-    }
-    else
-    {
-      // No match. Next search can start with the new data.
-      search_position = end - begin;
-    }
-
-    // Check if buffer is full.
-    if (b.size() == b.max_size())
-    {
-      ec = error::not_found;
-      return 0;
-    }
-
-    // Need more data.
-    std::size_t bytes_to_read = read_size_helper(b, 65536);
-    b.commit(s.read_some(b.prepare(bytes_to_read), ec));
-    if (ec)
-      return 0;
-  }
-}
-
-#endif // defined(ASIO_HAS_BOOST_REGEX)
-
-template <typename SyncReadStream,
-    typename DynamicBuffer, typename MatchCondition>
-inline std::size_t read_until(SyncReadStream& s,
-    ASIO_MOVE_ARG(DynamicBuffer) buffers,
-    MatchCondition match_condition,
-    typename enable_if<is_match_condition<MatchCondition>::value>::type*)
-{
-  asio::error_code ec;
-  std::size_t bytes_transferred = read_until(s,
-      ASIO_MOVE_CAST(DynamicBuffer)(buffers),
-      match_condition, ec);
-  asio::detail::throw_error(ec, "read_until");
-  return bytes_transferred;
-}
-
-template <typename SyncReadStream,
-    typename DynamicBuffer, typename MatchCondition>
-std::size_t read_until(SyncReadStream& s,
-    ASIO_MOVE_ARG(DynamicBuffer) buffers,
-    MatchCondition match_condition, asio::error_code& ec,
-    typename enable_if<is_match_condition<MatchCondition>::value>::type*)
-{
-  typename decay<DynamicBuffer>::type b(
-      ASIO_MOVE_CAST(DynamicBuffer)(buffers));
-
-  std::size_t search_position = 0;
-  for (;;)
-  {
-    // Determine the range of the data to be searched.
-    typedef typename DynamicBuffer::const_buffers_type buffers_type;
-    typedef buffers_iterator<buffers_type> iterator;
-    buffers_type data_buffers = b.data();
-    iterator begin = iterator::begin(data_buffers);
-    iterator start_pos = begin + search_position;
-    iterator end = iterator::end(data_buffers);
-
-    // Look for a match.
-    std::pair<iterator, bool> result = match_condition(start_pos, end);
-    if (result.second)
-    {
-      // Full match. We're done.
-      ec = asio::error_code();
-      return result.first - begin;
-    }
-    else if (result.first != end)
-    {
-      // Partial match. Next search needs to start from beginning of match.
-      search_position = result.first - begin;
-    }
-    else
-    {
-      // No match. Next search can start with the new data.
-      search_position = end - begin;
-    }
-
-    // Check if buffer is full.
-    if (b.size() == b.max_size())
-    {
-      ec = error::not_found;
-      return 0;
-    }
-
-    // Need more data.
-    std::size_t bytes_to_read = std::min<std::size_t>(
-          std::max<std::size_t>(512, b.capacity() - b.size()),
-          std::min<std::size_t>(65536, b.max_size() - b.size()));
-    b.commit(s.read_some(b.prepare(bytes_to_read), ec));
-    if (ec)
-      return 0;
-  }
-}
-
-#if !defined(ASIO_NO_IOSTREAM)
-
-template <typename SyncReadStream, typename Allocator>
-inline std::size_t read_until(SyncReadStream& s,
-    asio::basic_streambuf<Allocator>& b, char delim)
-{
-  return read_until(s, basic_streambuf_ref<Allocator>(b), delim);
-}
-
-template <typename SyncReadStream, typename Allocator>
-inline std::size_t read_until(SyncReadStream& s,
-    asio::basic_streambuf<Allocator>& b, char delim,
-    asio::error_code& ec)
-{
-  return read_until(s, basic_streambuf_ref<Allocator>(b), delim, ec);
-}
-
-template <typename SyncReadStream, typename Allocator>
-inline std::size_t read_until(SyncReadStream& s,
-    asio::basic_streambuf<Allocator>& b,
-    ASIO_STRING_VIEW_PARAM delim)
-{
-  return read_until(s, basic_streambuf_ref<Allocator>(b), delim);
-}
-
-template <typename SyncReadStream, typename Allocator>
-inline std::size_t read_until(SyncReadStream& s,
-    asio::basic_streambuf<Allocator>& b,
-    ASIO_STRING_VIEW_PARAM delim, asio::error_code& ec)
-{
-  return read_until(s, basic_streambuf_ref<Allocator>(b), delim, ec);
-}
-
-#if defined(ASIO_HAS_BOOST_REGEX)
-
-template <typename SyncReadStream, typename Allocator>
-inline std::size_t read_until(SyncReadStream& s,
-    asio::basic_streambuf<Allocator>& b, const boost::regex& expr)
-{
-  return read_until(s, basic_streambuf_ref<Allocator>(b), expr);
-}
-
-template <typename SyncReadStream, typename Allocator>
-inline std::size_t read_until(SyncReadStream& s,
-    asio::basic_streambuf<Allocator>& b, const boost::regex& expr,
-    asio::error_code& ec)
-{
-  return read_until(s, basic_streambuf_ref<Allocator>(b), expr, ec);
-}
-
-#endif // defined(ASIO_HAS_BOOST_REGEX)
-
-template <typename SyncReadStream, typename Allocator, typename MatchCondition>
-inline std::size_t read_until(SyncReadStream& s,
-    asio::basic_streambuf<Allocator>& b, MatchCondition match_condition,
-    typename enable_if<is_match_condition<MatchCondition>::value>::type*)
-{
-  return read_until(s, basic_streambuf_ref<Allocator>(b), match_condition);
-}
-
-template <typename SyncReadStream, typename Allocator, typename MatchCondition>
-inline std::size_t read_until(SyncReadStream& s,
-    asio::basic_streambuf<Allocator>& b,
-    MatchCondition match_condition, asio::error_code& ec,
-    typename enable_if<is_match_condition<MatchCondition>::value>::type*)
-{
-  return read_until(s, basic_streambuf_ref<Allocator>(b), match_condition, ec);
-}
-
-#endif // !defined(ASIO_NO_IOSTREAM)
-#endif // !defined(ASIO_NO_EXTENSIONS)
-
-namespace detail
-{
-  template <typename AsyncReadStream,
-      typename DynamicBuffer, typename ReadHandler>
-  class read_until_delim_op
-  {
-  public:
-    template <typename BufferSequence>
-    read_until_delim_op(AsyncReadStream& stream,
-        ASIO_MOVE_ARG(BufferSequence) buffers,
-        char delim, ReadHandler& handler)
-      : stream_(stream),
-        buffers_(ASIO_MOVE_CAST(BufferSequence)(buffers)),
-        delim_(delim),
-        start_(0),
-        search_position_(0),
-        handler_(ASIO_MOVE_CAST(ReadHandler)(handler))
-    {
-    }
-
-#if defined(ASIO_HAS_MOVE)
-    read_until_delim_op(const read_until_delim_op& other)
-      : stream_(other.stream_),
-        buffers_(other.buffers_),
-        delim_(other.delim_),
-        start_(other.start_),
-        search_position_(other.search_position_),
-        handler_(other.handler_)
-    {
-    }
-
-    read_until_delim_op(read_until_delim_op&& other)
-      : stream_(other.stream_),
-        buffers_(ASIO_MOVE_CAST(DynamicBuffer)(other.buffers_)),
-        delim_(other.delim_),
-        start_(other.start_),
-        search_position_(other.search_position_),
-        handler_(ASIO_MOVE_CAST(ReadHandler)(other.handler_))
-    {
-    }
-#endif // defined(ASIO_HAS_MOVE)
-
-    void operator()(const asio::error_code& ec,
-        std::size_t bytes_transferred, int start = 0)
-    {
-      const std::size_t not_found = (std::numeric_limits<std::size_t>::max)();
-      std::size_t bytes_to_read;
-      switch (start_ = start)
-      {
-      case 1:
-        for (;;)
-        {
-          {
-            // Determine the range of the data to be searched.
-            typedef typename DynamicBuffer::const_buffers_type
-              buffers_type;
-            typedef buffers_iterator<buffers_type> iterator;
-            buffers_type data_buffers = buffers_.data();
-            iterator begin = iterator::begin(data_buffers);
-            iterator start_pos = begin + search_position_;
-            iterator end = iterator::end(data_buffers);
-
-            // Look for a match.
-            iterator iter = std::find(start_pos, end, delim_);
-            if (iter != end)
-            {
-              // Found a match. We're done.
-              search_position_ = iter - begin + 1;
-              bytes_to_read = 0;
-            }
-
-            // No match yet. Check if buffer is full.
-            else if (buffers_.size() == buffers_.max_size())
-            {
-              search_position_ = not_found;
-              bytes_to_read = 0;
-            }
-
-            // Need to read some more data.
-            else
-            {
-              // Next search can start with the new data.
-              search_position_ = end - begin;
-              bytes_to_read = std::min<std::size_t>(
-                    std::max<std::size_t>(512,
-                      buffers_.capacity() - buffers_.size()),
-                    std::min<std::size_t>(65536,
-                      buffers_.max_size() - buffers_.size()));
-            }
-          }
-
-          // Check if we're done.
-          if (!start && bytes_to_read == 0)
-            break;
-
-          // Start a new asynchronous read operation to obtain more data.
-          stream_.async_read_some(buffers_.prepare(bytes_to_read),
-              ASIO_MOVE_CAST(read_until_delim_op)(*this));
-          return; default:
-          buffers_.commit(bytes_transferred);
-          if (ec || bytes_transferred == 0)
-            break;
-        }
-
-        const asio::error_code result_ec =
-          (search_position_ == not_found)
-          ? error::not_found : ec;
-
-        const std::size_t result_n =
-          (ec || search_position_ == not_found)
-          ? 0 : search_position_;
-
-        handler_(result_ec, result_n);
-      }
-    }
-
-  //private:
-    AsyncReadStream& stream_;
-    DynamicBuffer buffers_;
-    char delim_;
-    int start_;
-    std::size_t search_position_;
-    ReadHandler handler_;
-  };
-
-  template <typename AsyncReadStream,
-      typename DynamicBuffer, typename ReadHandler>
-  inline void* asio_handler_allocate(std::size_t size,
-      read_until_delim_op<AsyncReadStream,
-        DynamicBuffer, ReadHandler>* this_handler)
-  {
-    return asio_handler_alloc_helpers::allocate(
-        size, this_handler->handler_);
-  }
-
-  template <typename AsyncReadStream,
-      typename DynamicBuffer, typename ReadHandler>
-  inline void asio_handler_deallocate(void* pointer, std::size_t size,
-      read_until_delim_op<AsyncReadStream,
-        DynamicBuffer, ReadHandler>* this_handler)
-  {
-    asio_handler_alloc_helpers::deallocate(
-        pointer, size, this_handler->handler_);
-  }
-
-  template <typename AsyncReadStream,
-      typename DynamicBuffer, typename ReadHandler>
-  inline bool asio_handler_is_continuation(
-      read_until_delim_op<AsyncReadStream,
-        DynamicBuffer, ReadHandler>* this_handler)
-  {
-    return this_handler->start_ == 0 ? true
-      : asio_handler_cont_helpers::is_continuation(
-          this_handler->handler_);
-  }
-
-  template <typename Function, typename AsyncReadStream,
-      typename DynamicBuffer, typename ReadHandler>
-  inline void asio_handler_invoke(Function& function,
-      read_until_delim_op<AsyncReadStream,
-        DynamicBuffer, ReadHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-
-  template <typename Function, typename AsyncReadStream,
-      typename DynamicBuffer, typename ReadHandler>
-  inline void asio_handler_invoke(const Function& function,
-      read_until_delim_op<AsyncReadStream,
-        DynamicBuffer, ReadHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-} // namespace detail
-
-#if !defined(GENERATING_DOCUMENTATION)
-
-template <typename AsyncReadStream, typename DynamicBuffer,
-    typename ReadHandler, typename Allocator>
-struct associated_allocator<
-    detail::read_until_delim_op<AsyncReadStream,
-      DynamicBuffer, ReadHandler>,
-    Allocator>
-{
-  typedef typename associated_allocator<ReadHandler, Allocator>::type type;
-
-  static type get(
-      const detail::read_until_delim_op<AsyncReadStream,
-        DynamicBuffer, ReadHandler>& h,
-      const Allocator& a = Allocator()) ASIO_NOEXCEPT
-  {
-    return associated_allocator<ReadHandler, Allocator>::get(h.handler_, a);
-  }
-};
-
-template <typename AsyncReadStream, typename DynamicBuffer,
-    typename ReadHandler, typename Executor>
-struct associated_executor<
-    detail::read_until_delim_op<AsyncReadStream,
-      DynamicBuffer, ReadHandler>,
-    Executor>
-{
-  typedef typename associated_executor<ReadHandler, Executor>::type type;
-
-  static type get(
-      const detail::read_until_delim_op<AsyncReadStream,
-        DynamicBuffer, ReadHandler>& h,
-      const Executor& ex = Executor()) ASIO_NOEXCEPT
-  {
-    return associated_executor<ReadHandler, Executor>::get(h.handler_, ex);
-  }
-};
-
-#endif // !defined(GENERATING_DOCUMENTATION)
-
-template <typename AsyncReadStream,
-    typename DynamicBuffer, typename ReadHandler>
-ASIO_INITFN_RESULT_TYPE(ReadHandler,
-    void (asio::error_code, std::size_t))
-async_read_until(AsyncReadStream& s,
-    ASIO_MOVE_ARG(DynamicBuffer) buffers,
-    char delim, ASIO_MOVE_ARG(ReadHandler) handler)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a ReadHandler.
-  ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
-
-  async_completion<ReadHandler,
-    void (asio::error_code, std::size_t)> init(handler);
-
-  detail::read_until_delim_op<AsyncReadStream,
-    typename decay<DynamicBuffer>::type,
-      ASIO_HANDLER_TYPE(ReadHandler,
-        void (asio::error_code, std::size_t))>(
-          s, ASIO_MOVE_CAST(DynamicBuffer)(buffers),
-            delim, init.completion_handler)(asio::error_code(), 0, 1);
-
-  return init.result.get();
-}
-
-namespace detail
-{
-  template <typename AsyncReadStream,
-      typename DynamicBuffer, typename ReadHandler>
-  class read_until_delim_string_op
-  {
-  public:
-    template <typename BufferSequence>
-    read_until_delim_string_op(AsyncReadStream& stream,
-        ASIO_MOVE_ARG(BufferSequence) buffers,
-        const std::string& delim, ReadHandler& handler)
-      : stream_(stream),
-        buffers_(ASIO_MOVE_CAST(BufferSequence)(buffers)),
-        delim_(delim),
-        start_(0),
-        search_position_(0),
-        handler_(ASIO_MOVE_CAST(ReadHandler)(handler))
-    {
-    }
-
-#if defined(ASIO_HAS_MOVE)
-    read_until_delim_string_op(const read_until_delim_string_op& other)
-      : stream_(other.stream_),
-        buffers_(other.buffers_),
-        delim_(other.delim_),
-        start_(other.start_),
-        search_position_(other.search_position_),
-        handler_(other.handler_)
-    {
-    }
-
-    read_until_delim_string_op(read_until_delim_string_op&& other)
-      : stream_(other.stream_),
-        buffers_(ASIO_MOVE_CAST(DynamicBuffer)(other.buffers_)),
-        delim_(ASIO_MOVE_CAST(std::string)(other.delim_)),
-        start_(other.start_),
-        search_position_(other.search_position_),
-        handler_(ASIO_MOVE_CAST(ReadHandler)(other.handler_))
-    {
-    }
-#endif // defined(ASIO_HAS_MOVE)
-
-    void operator()(const asio::error_code& ec,
-        std::size_t bytes_transferred, int start = 0)
-    {
-      const std::size_t not_found = (std::numeric_limits<std::size_t>::max)();
-      std::size_t bytes_to_read;
-      switch (start_ = start)
-      {
-      case 1:
-        for (;;)
-        {
-          {
-            // Determine the range of the data to be searched.
-            typedef typename DynamicBuffer::const_buffers_type
-              buffers_type;
-            typedef buffers_iterator<buffers_type> iterator;
-            buffers_type data_buffers = buffers_.data();
-            iterator begin = iterator::begin(data_buffers);
-            iterator start_pos = begin + search_position_;
-            iterator end = iterator::end(data_buffers);
-
-            // Look for a match.
-            std::pair<iterator, bool> result = detail::partial_search(
-                start_pos, end, delim_.begin(), delim_.end());
-            if (result.first != end && result.second)
-            {
-              // Full match. We're done.
-              search_position_ = result.first - begin + delim_.length();
-              bytes_to_read = 0;
-            }
-
-            // No match yet. Check if buffer is full.
-            else if (buffers_.size() == buffers_.max_size())
-            {
-              search_position_ = not_found;
-              bytes_to_read = 0;
-            }
-
-            // Need to read some more data.
-            else
-            {
-              if (result.first != end)
-              {
-                // Partial match. Next search needs to start from beginning of
-                // match.
-                search_position_ = result.first - begin;
-              }
-              else
-              {
-                // Next search can start with the new data.
-                search_position_ = end - begin;
-              }
-
-              bytes_to_read = std::min<std::size_t>(
-                    std::max<std::size_t>(512,
-                      buffers_.capacity() - buffers_.size()),
-                    std::min<std::size_t>(65536,
-                      buffers_.max_size() - buffers_.size()));
-            }
-          }
-
-          // Check if we're done.
-          if (!start && bytes_to_read == 0)
-            break;
-
-          // Start a new asynchronous read operation to obtain more data.
-          stream_.async_read_some(buffers_.prepare(bytes_to_read),
-              ASIO_MOVE_CAST(read_until_delim_string_op)(*this));
-          return; default:
-          buffers_.commit(bytes_transferred);
-          if (ec || bytes_transferred == 0)
-            break;
-        }
-
-        const asio::error_code result_ec =
-          (search_position_ == not_found)
-          ? error::not_found : ec;
-
-        const std::size_t result_n =
-          (ec || search_position_ == not_found)
-          ? 0 : search_position_;
-
-        handler_(result_ec, result_n);
-      }
-    }
-
-  //private:
-    AsyncReadStream& stream_;
-    DynamicBuffer buffers_;
-    std::string delim_;
-    int start_;
-    std::size_t search_position_;
-    ReadHandler handler_;
-  };
-
-  template <typename AsyncReadStream,
-      typename DynamicBuffer, typename ReadHandler>
-  inline void* asio_handler_allocate(std::size_t size,
-      read_until_delim_string_op<AsyncReadStream,
-        DynamicBuffer, ReadHandler>* this_handler)
-  {
-    return asio_handler_alloc_helpers::allocate(
-        size, this_handler->handler_);
-  }
-
-  template <typename AsyncReadStream,
-      typename DynamicBuffer, typename ReadHandler>
-  inline void asio_handler_deallocate(void* pointer, std::size_t size,
-      read_until_delim_string_op<AsyncReadStream,
-        DynamicBuffer, ReadHandler>* this_handler)
-  {
-    asio_handler_alloc_helpers::deallocate(
-        pointer, size, this_handler->handler_);
-  }
-
-  template <typename AsyncReadStream,
-      typename DynamicBuffer, typename ReadHandler>
-  inline bool asio_handler_is_continuation(
-      read_until_delim_string_op<AsyncReadStream,
-        DynamicBuffer, ReadHandler>* this_handler)
-  {
-    return this_handler->start_ == 0 ? true
-      : asio_handler_cont_helpers::is_continuation(
-          this_handler->handler_);
-  }
-
-  template <typename Function, typename AsyncReadStream,
-      typename DynamicBuffer, typename ReadHandler>
-  inline void asio_handler_invoke(Function& function,
-      read_until_delim_string_op<AsyncReadStream,
-        DynamicBuffer, ReadHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-
-  template <typename Function, typename AsyncReadStream,
-      typename DynamicBuffer, typename ReadHandler>
-  inline void asio_handler_invoke(const Function& function,
-      read_until_delim_string_op<AsyncReadStream,
-        DynamicBuffer, ReadHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-} // namespace detail
-
-#if !defined(GENERATING_DOCUMENTATION)
-
-template <typename AsyncReadStream, typename DynamicBuffer,
-    typename ReadHandler, typename Allocator>
-struct associated_allocator<
-    detail::read_until_delim_string_op<AsyncReadStream,
-      DynamicBuffer, ReadHandler>,
-    Allocator>
-{
-  typedef typename associated_allocator<ReadHandler, Allocator>::type type;
-
-  static type get(
-      const detail::read_until_delim_string_op<AsyncReadStream,
-        DynamicBuffer, ReadHandler>& h,
-      const Allocator& a = Allocator()) ASIO_NOEXCEPT
-  {
-    return associated_allocator<ReadHandler, Allocator>::get(h.handler_, a);
-  }
-};
-
-template <typename AsyncReadStream, typename DynamicBuffer,
-    typename ReadHandler, typename Executor>
-struct associated_executor<
-    detail::read_until_delim_string_op<AsyncReadStream,
-      DynamicBuffer, ReadHandler>,
-    Executor>
-{
-  typedef typename associated_executor<ReadHandler, Executor>::type type;
-
-  static type get(
-      const detail::read_until_delim_string_op<AsyncReadStream,
-        DynamicBuffer, ReadHandler>& h,
-      const Executor& ex = Executor()) ASIO_NOEXCEPT
-  {
-    return associated_executor<ReadHandler, Executor>::get(h.handler_, ex);
-  }
-};
-
-#endif // !defined(GENERATING_DOCUMENTATION)
-
-template <typename AsyncReadStream,
-    typename DynamicBuffer, typename ReadHandler>
-ASIO_INITFN_RESULT_TYPE(ReadHandler,
-    void (asio::error_code, std::size_t))
-async_read_until(AsyncReadStream& s,
-    ASIO_MOVE_ARG(DynamicBuffer) buffers,
-    ASIO_STRING_VIEW_PARAM delim,
-    ASIO_MOVE_ARG(ReadHandler) handler)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a ReadHandler.
-  ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
-
-  async_completion<ReadHandler,
-    void (asio::error_code, std::size_t)> init(handler);
-
-  detail::read_until_delim_string_op<AsyncReadStream,
-    typename decay<DynamicBuffer>::type,
-      ASIO_HANDLER_TYPE(ReadHandler,
-        void (asio::error_code, std::size_t))>(
-          s, ASIO_MOVE_CAST(DynamicBuffer)(buffers),
-            static_cast<std::string>(delim),
-              init.completion_handler)(asio::error_code(), 0, 1);
-
-  return init.result.get();
-}
-
-#if !defined(ASIO_NO_EXTENSIONS)
-#if defined(ASIO_HAS_BOOST_REGEX)
-
-namespace detail
-{
-  template <typename AsyncReadStream, typename DynamicBuffer,
-      typename RegEx, typename ReadHandler>
-  class read_until_expr_op
-  {
-  public:
-    template <typename BufferSequence>
-    read_until_expr_op(AsyncReadStream& stream,
-        ASIO_MOVE_ARG(BufferSequence) buffers,
-        const boost::regex& expr, ReadHandler& handler)
-      : stream_(stream),
-        buffers_(ASIO_MOVE_CAST(BufferSequence)(buffers)),
-        expr_(expr),
-        start_(0),
-        search_position_(0),
-        handler_(ASIO_MOVE_CAST(ReadHandler)(handler))
-    {
-    }
-
-#if defined(ASIO_HAS_MOVE)
-    read_until_expr_op(const read_until_expr_op& other)
-      : stream_(other.stream_),
-        buffers_(other.buffers_),
-        expr_(other.expr_),
-        start_(other.start_),
-        search_position_(other.search_position_),
-        handler_(other.handler_)
-    {
-    }
-
-    read_until_expr_op(read_until_expr_op&& other)
-      : stream_(other.stream_),
-        buffers_(ASIO_MOVE_CAST(DynamicBuffer)(other.buffers_)),
-        expr_(other.expr_),
-        start_(other.start_),
-        search_position_(other.search_position_),
-        handler_(ASIO_MOVE_CAST(ReadHandler)(other.handler_))
-    {
-    }
-#endif // defined(ASIO_HAS_MOVE)
-
-    void operator()(const asio::error_code& ec,
-        std::size_t bytes_transferred, int start = 0)
-    {
-      const std::size_t not_found = (std::numeric_limits<std::size_t>::max)();
-      std::size_t bytes_to_read;
-      switch (start_ = start)
-      {
-      case 1:
-        for (;;)
-        {
-          {
-            // Determine the range of the data to be searched.
-            typedef typename DynamicBuffer::const_buffers_type
-              buffers_type;
-            typedef buffers_iterator<buffers_type> iterator;
-            buffers_type data_buffers = buffers_.data();
-            iterator begin = iterator::begin(data_buffers);
-            iterator start_pos = begin + search_position_;
-            iterator end = iterator::end(data_buffers);
-
-            // Look for a match.
-            boost::match_results<iterator,
-              typename std::vector<boost::sub_match<iterator> >::allocator_type>
-                match_results;
-            bool match = regex_search(start_pos, end, match_results, expr_,
-                boost::match_default | boost::match_partial);
-            if (match && match_results[0].matched)
-            {
-              // Full match. We're done.
-              search_position_ = match_results[0].second - begin;
-              bytes_to_read = 0;
-            }
-
-            // No match yet. Check if buffer is full.
-            else if (buffers_.size() == buffers_.max_size())
-            {
-              search_position_ = not_found;
-              bytes_to_read = 0;
-            }
-
-            // Need to read some more data.
-            else
-            {
-              if (match)
-              {
-                // Partial match. Next search needs to start from beginning of
-                // match.
-                search_position_ = match_results[0].first - begin;
-              }
-              else
-              {
-                // Next search can start with the new data.
-                search_position_ = end - begin;
-              }
-
-              bytes_to_read = std::min<std::size_t>(
-                    std::max<std::size_t>(512,
-                      buffers_.capacity() - buffers_.size()),
-                    std::min<std::size_t>(65536,
-                      buffers_.max_size() - buffers_.size()));
-            }
-          }
-
-          // Check if we're done.
-          if (!start && bytes_to_read == 0)
-            break;
-
-          // Start a new asynchronous read operation to obtain more data.
-          stream_.async_read_some(buffers_.prepare(bytes_to_read),
-              ASIO_MOVE_CAST(read_until_expr_op)(*this));
-          return; default:
-          buffers_.commit(bytes_transferred);
-          if (ec || bytes_transferred == 0)
-            break;
-        }
-
-        const asio::error_code result_ec =
-          (search_position_ == not_found)
-          ? error::not_found : ec;
-
-        const std::size_t result_n =
-          (ec || search_position_ == not_found)
-          ? 0 : search_position_;
-
-        handler_(result_ec, result_n);
-      }
-    }
-
-  //private:
-    AsyncReadStream& stream_;
-    DynamicBuffer buffers_;
-    RegEx expr_;
-    int start_;
-    std::size_t search_position_;
-    ReadHandler handler_;
-  };
-
-  template <typename AsyncReadStream, typename DynamicBuffer,
-      typename RegEx, typename ReadHandler>
-  inline void* asio_handler_allocate(std::size_t size,
-      read_until_expr_op<AsyncReadStream,
-        DynamicBuffer, RegEx, ReadHandler>* this_handler)
-  {
-    return asio_handler_alloc_helpers::allocate(
-        size, this_handler->handler_);
-  }
-
-  template <typename AsyncReadStream, typename DynamicBuffer,
-      typename RegEx, typename ReadHandler>
-  inline void asio_handler_deallocate(void* pointer, std::size_t size,
-      read_until_expr_op<AsyncReadStream,
-        DynamicBuffer, RegEx, ReadHandler>* this_handler)
-  {
-    asio_handler_alloc_helpers::deallocate(
-        pointer, size, this_handler->handler_);
-  }
-
-  template <typename AsyncReadStream, typename DynamicBuffer,
-      typename RegEx, typename ReadHandler>
-  inline bool asio_handler_is_continuation(
-      read_until_expr_op<AsyncReadStream,
-        DynamicBuffer, RegEx, ReadHandler>* this_handler)
-  {
-    return this_handler->start_ == 0 ? true
-      : asio_handler_cont_helpers::is_continuation(
-          this_handler->handler_);
-  }
-
-  template <typename Function, typename AsyncReadStream,
-      typename DynamicBuffer, typename RegEx, typename ReadHandler>
-  inline void asio_handler_invoke(Function& function,
-      read_until_expr_op<AsyncReadStream,
-        DynamicBuffer, RegEx, ReadHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-
-  template <typename Function, typename AsyncReadStream,
-      typename DynamicBuffer, typename RegEx, typename ReadHandler>
-  inline void asio_handler_invoke(const Function& function,
-      read_until_expr_op<AsyncReadStream,
-        DynamicBuffer, RegEx, ReadHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-} // namespace detail
-
-#if !defined(GENERATING_DOCUMENTATION)
-
-template <typename AsyncReadStream, typename DynamicBuffer,
-    typename RegEx, typename ReadHandler, typename Allocator>
-struct associated_allocator<
-    detail::read_until_expr_op<AsyncReadStream,
-      DynamicBuffer, RegEx, ReadHandler>,
-    Allocator>
-{
-  typedef typename associated_allocator<ReadHandler, Allocator>::type type;
-
-  static type get(
-      const detail::read_until_expr_op<AsyncReadStream,
-        DynamicBuffer, RegEx, ReadHandler>& h,
-      const Allocator& a = Allocator()) ASIO_NOEXCEPT
-  {
-    return associated_allocator<ReadHandler, Allocator>::get(h.handler_, a);
-  }
-};
-
-template <typename AsyncReadStream, typename DynamicBuffer,
-    typename RegEx, typename ReadHandler, typename Executor>
-struct associated_executor<
-    detail::read_until_expr_op<AsyncReadStream,
-      DynamicBuffer, RegEx, ReadHandler>,
-    Executor>
-{
-  typedef typename associated_executor<ReadHandler, Executor>::type type;
-
-  static type get(
-      const detail::read_until_expr_op<AsyncReadStream,
-        DynamicBuffer, RegEx, ReadHandler>& h,
-      const Executor& ex = Executor()) ASIO_NOEXCEPT
-  {
-    return associated_executor<ReadHandler, Executor>::get(h.handler_, ex);
-  }
-};
-
-#endif // !defined(GENERATING_DOCUMENTATION)
-
-template <typename AsyncReadStream,
-    typename DynamicBuffer, typename ReadHandler>
-ASIO_INITFN_RESULT_TYPE(ReadHandler,
-    void (asio::error_code, std::size_t))
-async_read_until(AsyncReadStream& s,
-    ASIO_MOVE_ARG(DynamicBuffer) buffers,
-    const boost::regex& expr,
-    ASIO_MOVE_ARG(ReadHandler) handler)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a ReadHandler.
-  ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
-
-  async_completion<ReadHandler,
-    void (asio::error_code, std::size_t)> init(handler);
-
-  detail::read_until_expr_op<AsyncReadStream,
-    typename decay<DynamicBuffer>::type,
-      boost::regex, ASIO_HANDLER_TYPE(ReadHandler,
-        void (asio::error_code, std::size_t))>(
-          s, ASIO_MOVE_CAST(DynamicBuffer)(buffers),
-            expr, init.completion_handler)(asio::error_code(), 0, 1);
-
-  return init.result.get();
-}
-
-#endif // defined(ASIO_HAS_BOOST_REGEX)
-
-namespace detail
-{
-  template <typename AsyncReadStream, typename DynamicBuffer,
-      typename MatchCondition, typename ReadHandler>
-  class read_until_match_op
-  {
-  public:
-    template <typename BufferSequence>
-    read_until_match_op(AsyncReadStream& stream,
-        ASIO_MOVE_ARG(BufferSequence) buffers,
-        MatchCondition match_condition, ReadHandler& handler)
-      : stream_(stream),
-        buffers_(ASIO_MOVE_CAST(BufferSequence)(buffers)),
-        match_condition_(match_condition),
-        start_(0),
-        search_position_(0),
-        handler_(ASIO_MOVE_CAST(ReadHandler)(handler))
-    {
-    }
-
-#if defined(ASIO_HAS_MOVE)
-    read_until_match_op(const read_until_match_op& other)
-      : stream_(other.stream_),
-        buffers_(other.buffers_),
-        match_condition_(other.match_condition_),
-        start_(other.start_),
-        search_position_(other.search_position_),
-        handler_(other.handler_)
-    {
-    }
-
-    read_until_match_op(read_until_match_op&& other)
-      : stream_(other.stream_),
-        buffers_(ASIO_MOVE_CAST(DynamicBuffer)(other.buffers_)),
-        match_condition_(other.match_condition_),
-        start_(other.start_),
-        search_position_(other.search_position_),
-        handler_(ASIO_MOVE_CAST(ReadHandler)(other.handler_))
-    {
-    }
-#endif // defined(ASIO_HAS_MOVE)
-
-    void operator()(const asio::error_code& ec,
-        std::size_t bytes_transferred, int start = 0)
-    {
-      const std::size_t not_found = (std::numeric_limits<std::size_t>::max)();
-      std::size_t bytes_to_read;
-      switch (start_ = start)
-      {
-      case 1:
-        for (;;)
-        {
-          {
-            // Determine the range of the data to be searched.
-            typedef typename DynamicBuffer::const_buffers_type
-              buffers_type;
-            typedef buffers_iterator<buffers_type> iterator;
-            buffers_type data_buffers = buffers_.data();
-            iterator begin = iterator::begin(data_buffers);
-            iterator start_pos = begin + search_position_;
-            iterator end = iterator::end(data_buffers);
-
-            // Look for a match.
-            std::pair<iterator, bool> result = match_condition_(start_pos, end);
-            if (result.second)
-            {
-              // Full match. We're done.
-              search_position_ = result.first - begin;
-              bytes_to_read = 0;
-            }
-
-            // No match yet. Check if buffer is full.
-            else if (buffers_.size() == buffers_.max_size())
-            {
-              search_position_ = not_found;
-              bytes_to_read = 0;
-            }
-
-            // Need to read some more data.
-            else
-            {
-              if (result.first != end)
-              {
-                // Partial match. Next search needs to start from beginning of
-                // match.
-                search_position_ = result.first - begin;
-              }
-              else
-              {
-                // Next search can start with the new data.
-                search_position_ = end - begin;
-              }
-
-              bytes_to_read = std::min<std::size_t>(
-                    std::max<std::size_t>(512,
-                      buffers_.capacity() - buffers_.size()),
-                    std::min<std::size_t>(65536,
-                      buffers_.max_size() - buffers_.size()));
-            }
-          }
-
-          // Check if we're done.
-          if (!start && bytes_to_read == 0)
-            break;
-
-          // Start a new asynchronous read operation to obtain more data.
-          stream_.async_read_some(buffers_.prepare(bytes_to_read),
-              ASIO_MOVE_CAST(read_until_match_op)(*this));
-          return; default:
-          buffers_.commit(bytes_transferred);
-          if (ec || bytes_transferred == 0)
-            break;
-        }
-
-        const asio::error_code result_ec =
-          (search_position_ == not_found)
-          ? error::not_found : ec;
-
-        const std::size_t result_n =
-          (ec || search_position_ == not_found)
-          ? 0 : search_position_;
-
-        handler_(result_ec, result_n);
-      }
-    }
-
-  //private:
-    AsyncReadStream& stream_;
-    DynamicBuffer buffers_;
-    MatchCondition match_condition_;
-    int start_;
-    std::size_t search_position_;
-    ReadHandler handler_;
-  };
-
-  template <typename AsyncReadStream, typename DynamicBuffer,
-      typename MatchCondition, typename ReadHandler>
-  inline void* asio_handler_allocate(std::size_t size,
-      read_until_match_op<AsyncReadStream, DynamicBuffer,
-        MatchCondition, ReadHandler>* this_handler)
-  {
-    return asio_handler_alloc_helpers::allocate(
-        size, this_handler->handler_);
-  }
-
-  template <typename AsyncReadStream, typename DynamicBuffer,
-      typename MatchCondition, typename ReadHandler>
-  inline void asio_handler_deallocate(void* pointer, std::size_t size,
-      read_until_match_op<AsyncReadStream, DynamicBuffer,
-        MatchCondition, ReadHandler>* this_handler)
-  {
-    asio_handler_alloc_helpers::deallocate(
-        pointer, size, this_handler->handler_);
-  }
-
-  template <typename AsyncReadStream, typename DynamicBuffer,
-      typename MatchCondition, typename ReadHandler>
-  inline bool asio_handler_is_continuation(
-      read_until_match_op<AsyncReadStream, DynamicBuffer,
-        MatchCondition, ReadHandler>* this_handler)
-  {
-    return this_handler->start_ == 0 ? true
-      : asio_handler_cont_helpers::is_continuation(
-          this_handler->handler_);
-  }
-
-  template <typename Function, typename AsyncReadStream,
-      typename DynamicBuffer, typename MatchCondition,
-      typename ReadHandler>
-  inline void asio_handler_invoke(Function& function,
-      read_until_match_op<AsyncReadStream, DynamicBuffer,
-        MatchCondition, ReadHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-
-  template <typename Function, typename AsyncReadStream,
-      typename DynamicBuffer, typename MatchCondition,
-      typename ReadHandler>
-  inline void asio_handler_invoke(const Function& function,
-      read_until_match_op<AsyncReadStream, DynamicBuffer,
-      MatchCondition, ReadHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-} // namespace detail
-
-#if !defined(GENERATING_DOCUMENTATION)
-
-template <typename AsyncReadStream, typename DynamicBuffer,
-    typename MatchCondition, typename ReadHandler, typename Allocator>
-struct associated_allocator<
-    detail::read_until_match_op<AsyncReadStream,
-      DynamicBuffer, MatchCondition, ReadHandler>,
-    Allocator>
-{
-  typedef typename associated_allocator<ReadHandler, Allocator>::type type;
-
-  static type get(
-      const detail::read_until_match_op<AsyncReadStream,
-        DynamicBuffer, MatchCondition, ReadHandler>& h,
-      const Allocator& a = Allocator()) ASIO_NOEXCEPT
-  {
-    return associated_allocator<ReadHandler, Allocator>::get(h.handler_, a);
-  }
-};
-
-template <typename AsyncReadStream, typename DynamicBuffer,
-    typename MatchCondition, typename ReadHandler, typename Executor>
-struct associated_executor<
-    detail::read_until_match_op<AsyncReadStream,
-      DynamicBuffer, MatchCondition, ReadHandler>,
-    Executor>
-{
-  typedef typename associated_executor<ReadHandler, Executor>::type type;
-
-  static type get(
-      const detail::read_until_match_op<AsyncReadStream,
-        DynamicBuffer, MatchCondition, ReadHandler>& h,
-      const Executor& ex = Executor()) ASIO_NOEXCEPT
-  {
-    return associated_executor<ReadHandler, Executor>::get(h.handler_, ex);
-  }
-};
-
-#endif // !defined(GENERATING_DOCUMENTATION)
-
-template <typename AsyncReadStream, typename DynamicBuffer,
-    typename MatchCondition, typename ReadHandler>
-ASIO_INITFN_RESULT_TYPE(ReadHandler,
-    void (asio::error_code, std::size_t))
-async_read_until(AsyncReadStream& s,
-    ASIO_MOVE_ARG(DynamicBuffer) buffers,
-    MatchCondition match_condition, ASIO_MOVE_ARG(ReadHandler) handler,
-    typename enable_if<is_match_condition<MatchCondition>::value>::type*)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a ReadHandler.
-  ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
-
-  async_completion<ReadHandler,
-    void (asio::error_code, std::size_t)> init(handler);
-
-  detail::read_until_match_op<AsyncReadStream,
-    typename decay<DynamicBuffer>::type,
-      MatchCondition, ASIO_HANDLER_TYPE(ReadHandler,
-        void (asio::error_code, std::size_t))>(
-          s, ASIO_MOVE_CAST(DynamicBuffer)(buffers),
-            match_condition, init.completion_handler)(
-              asio::error_code(), 0, 1);
-
-  return init.result.get();
-}
-
-#if !defined(ASIO_NO_IOSTREAM)
-
-template <typename AsyncReadStream, typename Allocator, typename ReadHandler>
-inline ASIO_INITFN_RESULT_TYPE(ReadHandler,
-    void (asio::error_code, std::size_t))
-async_read_until(AsyncReadStream& s,
-    asio::basic_streambuf<Allocator>& b,
-    char delim, ASIO_MOVE_ARG(ReadHandler) handler)
-{
-  return async_read_until(s, basic_streambuf_ref<Allocator>(b),
-      delim, ASIO_MOVE_CAST(ReadHandler)(handler));
-}
-
-template <typename AsyncReadStream, typename Allocator, typename ReadHandler>
-inline ASIO_INITFN_RESULT_TYPE(ReadHandler,
-    void (asio::error_code, std::size_t))
-async_read_until(AsyncReadStream& s,
-    asio::basic_streambuf<Allocator>& b,
-    ASIO_STRING_VIEW_PARAM delim,
-    ASIO_MOVE_ARG(ReadHandler) handler)
-{
-  return async_read_until(s, basic_streambuf_ref<Allocator>(b),
-      delim, ASIO_MOVE_CAST(ReadHandler)(handler));
-}
-
-#if defined(ASIO_HAS_BOOST_REGEX)
-
-template <typename AsyncReadStream, typename Allocator, typename ReadHandler>
-inline ASIO_INITFN_RESULT_TYPE(ReadHandler,
-    void (asio::error_code, std::size_t))
-async_read_until(AsyncReadStream& s,
-    asio::basic_streambuf<Allocator>& b, const boost::regex& expr,
-    ASIO_MOVE_ARG(ReadHandler) handler)
-{
-  return async_read_until(s, basic_streambuf_ref<Allocator>(b),
-      expr, ASIO_MOVE_CAST(ReadHandler)(handler));
-}
-
-#endif // defined(ASIO_HAS_BOOST_REGEX)
-
-template <typename AsyncReadStream, typename Allocator,
-    typename MatchCondition, typename ReadHandler>
-inline ASIO_INITFN_RESULT_TYPE(ReadHandler,
-    void (asio::error_code, std::size_t))
-async_read_until(AsyncReadStream& s,
-    asio::basic_streambuf<Allocator>& b,
-    MatchCondition match_condition, ASIO_MOVE_ARG(ReadHandler) handler,
-    typename enable_if<is_match_condition<MatchCondition>::value>::type*)
-{
-  return async_read_until(s, basic_streambuf_ref<Allocator>(b),
-      match_condition, ASIO_MOVE_CAST(ReadHandler)(handler));
-}
-
-#endif // !defined(ASIO_NO_IOSTREAM)
-#endif // !defined(ASIO_NO_EXTENSIONS)
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_IMPL_READ_UNTIL_HPP
diff --git a/lib/asio/impl/serial_port_base.hpp b/lib/asio/impl/serial_port_base.hpp
deleted file mode 100644
index cdc201d..0000000
--- a/lib/asio/impl/serial_port_base.hpp
+++ /dev/null
@@ -1,59 +0,0 @@
-//
-// impl/serial_port_base.hpp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// 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_IMPL_SERIAL_PORT_BASE_HPP
-#define ASIO_IMPL_SERIAL_PORT_BASE_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 {
-
-inline serial_port_base::baud_rate::baud_rate(unsigned int rate)
-  : value_(rate)
-{
-}
-
-inline unsigned int serial_port_base::baud_rate::value() const
-{
-  return value_;
-}
-
-inline serial_port_base::flow_control::type
-serial_port_base::flow_control::value() const
-{
-  return value_;
-}
-
-inline serial_port_base::parity::type serial_port_base::parity::value() const
-{
-  return value_;
-}
-
-inline serial_port_base::stop_bits::type
-serial_port_base::stop_bits::value() const
-{
-  return value_;
-}
-
-inline unsigned int serial_port_base::character_size::value() const
-{
-  return value_;
-}
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_IMPL_SERIAL_PORT_BASE_HPP
diff --git a/lib/asio/impl/serial_port_base.ipp b/lib/asio/impl/serial_port_base.ipp
deleted file mode 100644
index 21323ee..0000000
--- a/lib/asio/impl/serial_port_base.ipp
+++ /dev/null
@@ -1,557 +0,0 @@
-//
-// impl/serial_port_base.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_IMPL_SERIAL_PORT_BASE_IPP
-#define ASIO_IMPL_SERIAL_PORT_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_SERIAL_PORT)
-
-#include <stdexcept>
-#include "asio/error.hpp"
-#include "asio/serial_port_base.hpp"
-#include "asio/detail/throw_exception.hpp"
-
-#if defined(GENERATING_DOCUMENTATION)
-# define ASIO_OPTION_STORAGE implementation_defined
-#elif defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-# define ASIO_OPTION_STORAGE DCB
-#else
-# define ASIO_OPTION_STORAGE termios
-#endif
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-ASIO_SYNC_OP_VOID serial_port_base::baud_rate::store(
-    ASIO_OPTION_STORAGE& storage, asio::error_code& ec) const
-{
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  storage.BaudRate = value_;
-#else
-  speed_t baud;
-  switch (value_)
-  {
-  // Do POSIX-specified rates first.
-  case 0: baud = B0; break;
-  case 50: baud = B50; break;
-  case 75: baud = B75; break;
-  case 110: baud = B110; break;
-  case 134: baud = B134; break;
-  case 150: baud = B150; break;
-  case 200: baud = B200; break;
-  case 300: baud = B300; break;
-  case 600: baud = B600; break;
-  case 1200: baud = B1200; break;
-  case 1800: baud = B1800; break;
-  case 2400: baud = B2400; break;
-  case 4800: baud = B4800; break;
-  case 9600: baud = B9600; break;
-  case 19200: baud = B19200; break;
-  case 38400: baud = B38400; break;
-  // And now the extended ones conditionally.
-# ifdef B7200
-  case 7200: baud = B7200; break;
-# endif
-# ifdef B14400
-  case 14400: baud = B14400; break;
-# endif
-# ifdef B57600
-  case 57600: baud = B57600; break;
-# endif
-# ifdef B115200
-  case 115200: baud = B115200; break;
-# endif
-# ifdef B230400
-  case 230400: baud = B230400; break;
-# endif
-# ifdef B460800
-  case 460800: baud = B460800; break;
-# endif
-# ifdef B500000
-  case 500000: baud = B500000; break;
-# endif
-# ifdef B576000
-  case 576000: baud = B576000; break;
-# endif
-# ifdef B921600
-  case 921600: baud = B921600; break;
-# endif
-# ifdef B1000000
-  case 1000000: baud = B1000000; break;
-# endif
-# ifdef B1152000
-  case 1152000: baud = B1152000; break;
-# endif
-# ifdef B2000000
-  case 2000000: baud = B2000000; break;
-# endif
-# ifdef B3000000
-  case 3000000: baud = B3000000; break;
-# endif
-# ifdef B3500000
-  case 3500000: baud = B3500000; break;
-# endif
-# ifdef B4000000
-  case 4000000: baud = B4000000; break;
-# endif
-  default:
-    ec = asio::error::invalid_argument;
-    ASIO_SYNC_OP_VOID_RETURN(ec);
-  }
-# if defined(_BSD_SOURCE) || defined(_DEFAULT_SOURCE)
-  ::cfsetspeed(&storage, baud);
-# else
-  ::cfsetispeed(&storage, baud);
-  ::cfsetospeed(&storage, baud);
-# endif
-#endif
-  ec = asio::error_code();
-  ASIO_SYNC_OP_VOID_RETURN(ec);
-}
-
-ASIO_SYNC_OP_VOID serial_port_base::baud_rate::load(
-    const ASIO_OPTION_STORAGE& storage, asio::error_code& ec)
-{
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  value_ = storage.BaudRate;
-#else
-  speed_t baud = ::cfgetospeed(&storage);
-  switch (baud)
-  {
-  // First do those specified by POSIX.
-  case B0: value_ = 0; break;
-  case B50: value_ = 50; break;
-  case B75: value_ = 75; break;
-  case B110: value_ = 110; break;
-  case B134: value_ = 134; break;
-  case B150: value_ = 150; break;
-  case B200: value_ = 200; break;
-  case B300: value_ = 300; break;
-  case B600: value_ = 600; break;
-  case B1200: value_ = 1200; break;
-  case B1800: value_ = 1800; break;
-  case B2400: value_ = 2400; break;
-  case B4800: value_ = 4800; break;
-  case B9600: value_ = 9600; break;
-  case B19200: value_ = 19200; break;
-  case B38400: value_ = 38400; break;
-  // Now conditionally handle a bunch of extended rates.
-# ifdef B7200
-  case B7200: value_ = 7200; break;
-# endif
-# ifdef B14400
-  case B14400: value_ = 14400; break;
-# endif
-# ifdef B57600
-  case B57600: value_ = 57600; break;
-# endif
-# ifdef B115200
-  case B115200: value_ = 115200; break;
-# endif
-# ifdef B230400
-  case B230400: value_ = 230400; break;
-# endif
-# ifdef B460800
-  case B460800: value_ = 460800; break;
-# endif
-# ifdef B500000
-  case B500000: value_ = 500000; break;
-# endif
-# ifdef B576000
-  case B576000: value_ = 576000; break;
-# endif
-# ifdef B921600
-  case B921600: value_ = 921600; break;
-# endif
-# ifdef B1000000
-  case B1000000: value_ = 1000000; break;
-# endif
-# ifdef B1152000
-  case B1152000: value_ = 1152000; break;
-# endif
-# ifdef B2000000
-  case B2000000: value_ = 2000000; break;
-# endif
-# ifdef B3000000
-  case B3000000: value_ = 3000000; break;
-# endif
-# ifdef B3500000
-  case B3500000: value_ = 3500000; break;
-# endif
-# ifdef B4000000
-  case B4000000: value_ = 4000000; break;
-# endif
-  default:
-    value_ = 0;
-    ec = asio::error::invalid_argument;
-    ASIO_SYNC_OP_VOID_RETURN(ec);
-  }
-#endif
-  ec = asio::error_code();
-  ASIO_SYNC_OP_VOID_RETURN(ec);
-}
-
-serial_port_base::flow_control::flow_control(
-    serial_port_base::flow_control::type t)
-  : value_(t)
-{
-  if (t != none && t != software && t != hardware)
-  {
-    std::out_of_range ex("invalid flow_control value");
-    asio::detail::throw_exception(ex);
-  }
-}
-
-ASIO_SYNC_OP_VOID serial_port_base::flow_control::store(
-    ASIO_OPTION_STORAGE& storage, asio::error_code& ec) const
-{
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  storage.fOutxCtsFlow = FALSE;
-  storage.fOutxDsrFlow = FALSE;
-  storage.fTXContinueOnXoff = TRUE;
-  storage.fDtrControl = DTR_CONTROL_ENABLE;
-  storage.fDsrSensitivity = FALSE;
-  storage.fOutX = FALSE;
-  storage.fInX = FALSE;
-  storage.fRtsControl = RTS_CONTROL_ENABLE;
-  switch (value_)
-  {
-  case none:
-    break;
-  case software:
-    storage.fOutX = TRUE;
-    storage.fInX = TRUE;
-    break;
-  case hardware:
-    storage.fOutxCtsFlow = TRUE;
-    storage.fRtsControl = RTS_CONTROL_HANDSHAKE;
-    break;
-  default:
-    break;
-  }
-#else
-  switch (value_)
-  {
-  case none:
-    storage.c_iflag &= ~(IXOFF | IXON);
-# if defined(_BSD_SOURCE) || defined(_DEFAULT_SOURCE)
-    storage.c_cflag &= ~CRTSCTS;
-# elif defined(__QNXNTO__)
-    storage.c_cflag &= ~(IHFLOW | OHFLOW);
-# endif
-    break;
-  case software:
-    storage.c_iflag |= IXOFF | IXON;
-# if defined(_BSD_SOURCE) || defined(_DEFAULT_SOURCE)
-    storage.c_cflag &= ~CRTSCTS;
-# elif defined(__QNXNTO__)
-    storage.c_cflag &= ~(IHFLOW | OHFLOW);
-# endif
-    break;
-  case hardware:
-# if defined(_BSD_SOURCE) || defined(_DEFAULT_SOURCE)
-    storage.c_iflag &= ~(IXOFF | IXON);
-    storage.c_cflag |= CRTSCTS;
-    break;
-# elif defined(__QNXNTO__)
-    storage.c_iflag &= ~(IXOFF | IXON);
-    storage.c_cflag |= (IHFLOW | OHFLOW);
-    break;
-# else
-    ec = asio::error::operation_not_supported;
-    ASIO_SYNC_OP_VOID_RETURN(ec);
-# endif
-  default:
-    break;
-  }
-#endif
-  ec = asio::error_code();
-  ASIO_SYNC_OP_VOID_RETURN(ec);
-}
-
-ASIO_SYNC_OP_VOID serial_port_base::flow_control::load(
-    const ASIO_OPTION_STORAGE& storage, asio::error_code& ec)
-{
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  if (storage.fOutX && storage.fInX)
-  {
-    value_ = software;
-  }
-  else if (storage.fOutxCtsFlow && storage.fRtsControl == RTS_CONTROL_HANDSHAKE)
-  {
-    value_ = hardware;
-  }
-  else
-  {
-    value_ = none;
-  }
-#else
-  if (storage.c_iflag & (IXOFF | IXON))
-  {
-    value_ = software;
-  }
-# if defined(_BSD_SOURCE) || defined(_DEFAULT_SOURCE)
-  else if (storage.c_cflag & CRTSCTS)
-  {
-    value_ = hardware;
-  }
-# elif defined(__QNXNTO__)
-  else if (storage.c_cflag & IHFLOW && storage.c_cflag & OHFLOW)
-  {
-    value_ = hardware;
-  }
-# endif
-  else
-  {
-    value_ = none;
-  }
-#endif
-  ec = asio::error_code();
-  ASIO_SYNC_OP_VOID_RETURN(ec);
-}
-
-serial_port_base::parity::parity(serial_port_base::parity::type t)
-  : value_(t)
-{
-  if (t != none && t != odd && t != even)
-  {
-    std::out_of_range ex("invalid parity value");
-    asio::detail::throw_exception(ex);
-  }
-}
-
-ASIO_SYNC_OP_VOID serial_port_base::parity::store(
-    ASIO_OPTION_STORAGE& storage, asio::error_code& ec) const
-{
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  switch (value_)
-  {
-  case none:
-    storage.fParity = FALSE;
-    storage.Parity = NOPARITY;
-    break;
-  case odd:
-    storage.fParity = TRUE;
-    storage.Parity = ODDPARITY;
-    break;
-  case even:
-    storage.fParity = TRUE;
-    storage.Parity = EVENPARITY;
-    break;
-  default:
-    break;
-  }
-#else
-  switch (value_)
-  {
-  case none:
-    storage.c_iflag |= IGNPAR;
-    storage.c_cflag &= ~(PARENB | PARODD);
-    break;
-  case even:
-    storage.c_iflag &= ~(IGNPAR | PARMRK);
-    storage.c_iflag |= INPCK;
-    storage.c_cflag |= PARENB;
-    storage.c_cflag &= ~PARODD;
-    break;
-  case odd:
-    storage.c_iflag &= ~(IGNPAR | PARMRK);
-    storage.c_iflag |= INPCK;
-    storage.c_cflag |= (PARENB | PARODD);
-    break;
-  default:
-    break;
-  }
-#endif
-  ec = asio::error_code();
-  ASIO_SYNC_OP_VOID_RETURN(ec);
-}
-
-ASIO_SYNC_OP_VOID serial_port_base::parity::load(
-    const ASIO_OPTION_STORAGE& storage, asio::error_code& ec)
-{
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  if (storage.Parity == EVENPARITY)
-  {
-    value_ = even;
-  }
-  else if (storage.Parity == ODDPARITY)
-  {
-    value_ = odd;
-  }
-  else
-  {
-    value_ = none;
-  }
-#else
-  if (storage.c_cflag & PARENB)
-  {
-    if (storage.c_cflag & PARODD)
-    {
-      value_ = odd;
-    }
-    else
-    {
-      value_ = even;
-    }
-  }
-  else
-  {
-    value_ = none;
-  }
-#endif
-  ec = asio::error_code();
-  ASIO_SYNC_OP_VOID_RETURN(ec);
-}
-
-serial_port_base::stop_bits::stop_bits(
-    serial_port_base::stop_bits::type t)
-  : value_(t)
-{
-  if (t != one && t != onepointfive && t != two)
-  {
-    std::out_of_range ex("invalid stop_bits value");
-    asio::detail::throw_exception(ex);
-  }
-}
-
-ASIO_SYNC_OP_VOID serial_port_base::stop_bits::store(
-    ASIO_OPTION_STORAGE& storage, asio::error_code& ec) const
-{
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  switch (value_)
-  {
-  case one:
-    storage.StopBits = ONESTOPBIT;
-    break;
-  case onepointfive:
-    storage.StopBits = ONE5STOPBITS;
-    break;
-  case two:
-    storage.StopBits = TWOSTOPBITS;
-    break;
-  default:
-    break;
-  }
-#else
-  switch (value_)
-  {
-  case one:
-    storage.c_cflag &= ~CSTOPB;
-    break;
-  case two:
-    storage.c_cflag |= CSTOPB;
-    break;
-  default:
-    ec = asio::error::operation_not_supported;
-    ASIO_SYNC_OP_VOID_RETURN(ec);
-  }
-#endif
-  ec = asio::error_code();
-  ASIO_SYNC_OP_VOID_RETURN(ec);
-}
-
-ASIO_SYNC_OP_VOID serial_port_base::stop_bits::load(
-    const ASIO_OPTION_STORAGE& storage, asio::error_code& ec)
-{
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  if (storage.StopBits == ONESTOPBIT)
-  {
-    value_ = one;
-  }
-  else if (storage.StopBits == ONE5STOPBITS)
-  {
-    value_ = onepointfive;
-  }
-  else if (storage.StopBits == TWOSTOPBITS)
-  {
-    value_ = two;
-  }
-  else
-  {
-    value_ = one;
-  }
-#else
-  value_ = (storage.c_cflag & CSTOPB) ? two : one;
-#endif
-  ec = asio::error_code();
-  ASIO_SYNC_OP_VOID_RETURN(ec);
-}
-
-serial_port_base::character_size::character_size(unsigned int t)
-  : value_(t)
-{
-  if (t < 5 || t > 8)
-  {
-    std::out_of_range ex("invalid character_size value");
-    asio::detail::throw_exception(ex);
-  }
-}
-
-ASIO_SYNC_OP_VOID serial_port_base::character_size::store(
-    ASIO_OPTION_STORAGE& storage, asio::error_code& ec) const
-{
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  storage.ByteSize = value_;
-#else
-  storage.c_cflag &= ~CSIZE;
-  switch (value_)
-  {
-  case 5: storage.c_cflag |= CS5; break;
-  case 6: storage.c_cflag |= CS6; break;
-  case 7: storage.c_cflag |= CS7; break;
-  case 8: storage.c_cflag |= CS8; break;
-  default: break;
-  }
-#endif
-  ec = asio::error_code();
-  ASIO_SYNC_OP_VOID_RETURN(ec);
-}
-
-ASIO_SYNC_OP_VOID serial_port_base::character_size::load(
-    const ASIO_OPTION_STORAGE& storage, asio::error_code& ec)
-{
-#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
-  value_ = storage.ByteSize;
-#else
-
-#pragma GCC diagnostic ignored "-Wduplicated-branches"
-  if ((storage.c_cflag & CSIZE) == CS5) { value_ = 5; }
-  else if ((storage.c_cflag & CSIZE) == CS6) { value_ = 6; }
-  else if ((storage.c_cflag & CSIZE) == CS7) { value_ = 7; }
-  else if ((storage.c_cflag & CSIZE) == CS8) { value_ = 8; }
-  else
-  {
-    // Hmmm, use 8 for now.
-    value_ = 8;
-  }
-#pragma GCC diagnostic pop
-#endif
-  ec = asio::error_code();
-  ASIO_SYNC_OP_VOID_RETURN(ec);
-}
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#undef ASIO_OPTION_STORAGE
-
-#endif // defined(ASIO_HAS_SERIAL_PORT)
-
-#endif // ASIO_IMPL_SERIAL_PORT_BASE_IPP
diff --git a/lib/asio/impl/spawn.hpp b/lib/asio/impl/spawn.hpp
deleted file mode 100644
index 5594ad9..0000000
--- a/lib/asio/impl/spawn.hpp
+++ /dev/null
@@ -1,535 +0,0 @@
-//
-// impl/spawn.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_IMPL_SPAWN_HPP
-#define ASIO_IMPL_SPAWN_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include "asio/associated_allocator.hpp"
-#include "asio/associated_executor.hpp"
-#include "asio/async_result.hpp"
-#include "asio/bind_executor.hpp"
-#include "asio/detail/atomic_count.hpp"
-#include "asio/detail/handler_alloc_helpers.hpp"
-#include "asio/detail/handler_cont_helpers.hpp"
-#include "asio/detail/handler_invoke_helpers.hpp"
-#include "asio/detail/memory.hpp"
-#include "asio/detail/noncopyable.hpp"
-#include "asio/detail/type_traits.hpp"
-#include "asio/system_error.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-  template <typename Handler, typename T>
-  class coro_handler
-  {
-  public:
-    coro_handler(basic_yield_context<Handler> ctx)
-      : coro_(ctx.coro_.lock()),
-        ca_(ctx.ca_),
-        handler_(ctx.handler_),
-        ready_(0),
-        ec_(ctx.ec_),
-        value_(0)
-    {
-    }
-
-    void operator()(T value)
-    {
-      *ec_ = asio::error_code();
-      *value_ = ASIO_MOVE_CAST(T)(value);
-      if (--*ready_ == 0)
-        (*coro_)();
-    }
-
-    void operator()(asio::error_code ec, T value)
-    {
-      *ec_ = ec;
-      *value_ = ASIO_MOVE_CAST(T)(value);
-      if (--*ready_ == 0)
-        (*coro_)();
-    }
-
-  //private:
-    shared_ptr<typename basic_yield_context<Handler>::callee_type> coro_;
-    typename basic_yield_context<Handler>::caller_type& ca_;
-    Handler handler_;
-    atomic_count* ready_;
-    asio::error_code* ec_;
-    T* value_;
-  };
-
-  template <typename Handler>
-  class coro_handler<Handler, void>
-  {
-  public:
-    coro_handler(basic_yield_context<Handler> ctx)
-      : coro_(ctx.coro_.lock()),
-        ca_(ctx.ca_),
-        handler_(ctx.handler_),
-        ready_(0),
-        ec_(ctx.ec_)
-    {
-    }
-
-    void operator()()
-    {
-      *ec_ = asio::error_code();
-      if (--*ready_ == 0)
-        (*coro_)();
-    }
-
-    void operator()(asio::error_code ec)
-    {
-      *ec_ = ec;
-      if (--*ready_ == 0)
-        (*coro_)();
-    }
-
-  //private:
-    shared_ptr<typename basic_yield_context<Handler>::callee_type> coro_;
-    typename basic_yield_context<Handler>::caller_type& ca_;
-    Handler handler_;
-    atomic_count* ready_;
-    asio::error_code* ec_;
-  };
-
-  template <typename Handler, typename T>
-  inline void* asio_handler_allocate(std::size_t size,
-      coro_handler<Handler, T>* this_handler)
-  {
-    return asio_handler_alloc_helpers::allocate(
-        size, this_handler->handler_);
-  }
-
-  template <typename Handler, typename T>
-  inline void asio_handler_deallocate(void* pointer, std::size_t size,
-      coro_handler<Handler, T>* this_handler)
-  {
-    asio_handler_alloc_helpers::deallocate(
-        pointer, size, this_handler->handler_);
-  }
-
-  template <typename Handler, typename T>
-  inline bool asio_handler_is_continuation(coro_handler<Handler, T>*)
-  {
-    return true;
-  }
-
-  template <typename Function, typename Handler, typename T>
-  inline void asio_handler_invoke(Function& function,
-      coro_handler<Handler, T>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-
-  template <typename Function, typename Handler, typename T>
-  inline void asio_handler_invoke(const Function& function,
-      coro_handler<Handler, T>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-
-  template <typename Handler, typename T>
-  class coro_async_result
-  {
-  public:
-    typedef coro_handler<Handler, T> completion_handler_type;
-    typedef T return_type;
-
-    explicit coro_async_result(completion_handler_type& h)
-      : handler_(h),
-        ca_(h.ca_),
-        ready_(2)
-    {
-      h.ready_ = &ready_;
-      out_ec_ = h.ec_;
-      if (!out_ec_) h.ec_ = &ec_;
-      h.value_ = &value_;
-    }
-
-    return_type get()
-    {
-      // Must not hold shared_ptr to coro while suspended.
-      handler_.coro_.reset();
-
-      if (--ready_ != 0)
-        ca_();
-      if (!out_ec_ && ec_) throw asio::system_error(ec_);
-      return ASIO_MOVE_CAST(return_type)(value_);
-    }
-
-  private:
-    completion_handler_type& handler_;
-    typename basic_yield_context<Handler>::caller_type& ca_;
-    atomic_count ready_;
-    asio::error_code* out_ec_;
-    asio::error_code ec_;
-    return_type value_;
-  };
-
-  template <typename Handler>
-  class coro_async_result<Handler, void>
-  {
-  public:
-    typedef coro_handler<Handler, void> completion_handler_type;
-    typedef void return_type;
-
-    explicit coro_async_result(completion_handler_type& h)
-      : handler_(h),
-        ca_(h.ca_),
-        ready_(2)
-    {
-      h.ready_ = &ready_;
-      out_ec_ = h.ec_;
-      if (!out_ec_) h.ec_ = &ec_;
-    }
-
-    void get()
-    {
-      // Must not hold shared_ptr to coro while suspended.
-      handler_.coro_.reset();
-
-      if (--ready_ != 0)
-        ca_();
-      if (!out_ec_ && ec_) throw asio::system_error(ec_);
-    }
-
-  private:
-    completion_handler_type& handler_;
-    typename basic_yield_context<Handler>::caller_type& ca_;
-    atomic_count ready_;
-    asio::error_code* out_ec_;
-    asio::error_code ec_;
-  };
-
-} // namespace detail
-
-#if !defined(GENERATING_DOCUMENTATION)
-
-template <typename Handler, typename ReturnType>
-class async_result<basic_yield_context<Handler>, ReturnType()>
-  : public detail::coro_async_result<Handler, void>
-{
-public:
-  explicit async_result(
-    typename detail::coro_async_result<Handler,
-      void>::completion_handler_type& h)
-    : detail::coro_async_result<Handler, void>(h)
-  {
-  }
-};
-
-template <typename Handler, typename ReturnType, typename Arg1>
-class async_result<basic_yield_context<Handler>, ReturnType(Arg1)>
-  : public detail::coro_async_result<Handler, typename decay<Arg1>::type>
-{
-public:
-  explicit async_result(
-    typename detail::coro_async_result<Handler,
-      typename decay<Arg1>::type>::completion_handler_type& h)
-    : detail::coro_async_result<Handler, typename decay<Arg1>::type>(h)
-  {
-  }
-};
-
-template <typename Handler, typename ReturnType>
-class async_result<basic_yield_context<Handler>,
-    ReturnType(asio::error_code)>
-  : public detail::coro_async_result<Handler, void>
-{
-public:
-  explicit async_result(
-    typename detail::coro_async_result<Handler,
-      void>::completion_handler_type& h)
-    : detail::coro_async_result<Handler, void>(h)
-  {
-  }
-};
-
-template <typename Handler, typename ReturnType, typename Arg2>
-class async_result<basic_yield_context<Handler>,
-    ReturnType(asio::error_code, Arg2)>
-  : public detail::coro_async_result<Handler, typename decay<Arg2>::type>
-{
-public:
-  explicit async_result(
-    typename detail::coro_async_result<Handler,
-      typename decay<Arg2>::type>::completion_handler_type& h)
-    : detail::coro_async_result<Handler, typename decay<Arg2>::type>(h)
-  {
-  }
-};
-
-#if !defined(ASIO_NO_DEPRECATED)
-
-template <typename Handler, typename ReturnType>
-struct handler_type<basic_yield_context<Handler>, ReturnType()>
-{
-  typedef detail::coro_handler<Handler, void> type;
-};
-
-template <typename Handler, typename ReturnType, typename Arg1>
-struct handler_type<basic_yield_context<Handler>, ReturnType(Arg1)>
-{
-  typedef detail::coro_handler<Handler, typename decay<Arg1>::type> type;
-};
-
-template <typename Handler, typename ReturnType>
-struct handler_type<basic_yield_context<Handler>,
-    ReturnType(asio::error_code)>
-{
-  typedef detail::coro_handler<Handler, void> type;
-};
-
-template <typename Handler, typename ReturnType, typename Arg2>
-struct handler_type<basic_yield_context<Handler>,
-    ReturnType(asio::error_code, Arg2)>
-{
-  typedef detail::coro_handler<Handler, typename decay<Arg2>::type> type;
-};
-
-template <typename Handler, typename T>
-class async_result<detail::coro_handler<Handler, T> >
-  : public detail::coro_async_result<Handler, T>
-{
-public:
-  typedef typename detail::coro_async_result<Handler, T>::return_type type;
-
-  explicit async_result(
-    typename detail::coro_async_result<Handler,
-      T>::completion_handler_type& h)
-    : detail::coro_async_result<Handler, T>(h)
-  {
-  }
-};
-
-#endif // !defined(ASIO_NO_DEPRECATED)
-
-template <typename Handler, typename T, typename Allocator>
-struct associated_allocator<detail::coro_handler<Handler, T>, Allocator>
-{
-  typedef typename associated_allocator<Handler, Allocator>::type type;
-
-  static type get(const detail::coro_handler<Handler, T>& h,
-      const Allocator& a = Allocator()) ASIO_NOEXCEPT
-  {
-    return associated_allocator<Handler, Allocator>::get(h.handler_, a);
-  }
-};
-
-template <typename Handler, typename T, typename Executor>
-struct associated_executor<detail::coro_handler<Handler, T>, Executor>
-{
-  typedef typename associated_executor<Handler, Executor>::type type;
-
-  static type get(const detail::coro_handler<Handler, T>& h,
-      const Executor& ex = Executor()) ASIO_NOEXCEPT
-  {
-    return associated_executor<Handler, Executor>::get(h.handler_, ex);
-  }
-};
-
-namespace detail {
-
-  template <typename Handler, typename Function>
-  struct spawn_data : private noncopyable
-  {
-    template <typename Hand, typename Func>
-    spawn_data(ASIO_MOVE_ARG(Hand) handler,
-        bool call_handler, ASIO_MOVE_ARG(Func) function)
-      : handler_(ASIO_MOVE_CAST(Hand)(handler)),
-        call_handler_(call_handler),
-        function_(ASIO_MOVE_CAST(Func)(function))
-    {
-    }
-
-    weak_ptr<typename basic_yield_context<Handler>::callee_type> coro_;
-    Handler handler_;
-    bool call_handler_;
-    Function function_;
-  };
-
-  template <typename Handler, typename Function>
-  struct coro_entry_point
-  {
-    void operator()(typename basic_yield_context<Handler>::caller_type& ca)
-    {
-      shared_ptr<spawn_data<Handler, Function> > data(data_);
-#if !defined(BOOST_COROUTINES_UNIDIRECT) && !defined(BOOST_COROUTINES_V2)
-      ca(); // Yield until coroutine pointer has been initialised.
-#endif // !defined(BOOST_COROUTINES_UNIDIRECT) && !defined(BOOST_COROUTINES_V2)
-      const basic_yield_context<Handler> yield(
-          data->coro_, ca, data->handler_);
-
-      (data->function_)(yield);
-      if (data->call_handler_)
-        (data->handler_)();
-    }
-
-    shared_ptr<spawn_data<Handler, Function> > data_;
-  };
-
-  template <typename Handler, typename Function>
-  struct spawn_helper
-  {
-    void operator()()
-    {
-      typedef typename basic_yield_context<Handler>::callee_type callee_type;
-      coro_entry_point<Handler, Function> entry_point = { data_ };
-      shared_ptr<callee_type> coro(new callee_type(entry_point, attributes_));
-      data_->coro_ = coro;
-      (*coro)();
-    }
-
-    shared_ptr<spawn_data<Handler, Function> > data_;
-    boost::coroutines::attributes attributes_;
-  };
-
-  template <typename Function, typename Handler, typename Function1>
-  inline void asio_handler_invoke(Function& function,
-      spawn_helper<Handler, Function1>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->data_->handler_);
-  }
-
-  template <typename Function, typename Handler, typename Function1>
-  inline void asio_handler_invoke(const Function& function,
-      spawn_helper<Handler, Function1>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->data_->handler_);
-  }
-
-  inline void default_spawn_handler() {}
-
-} // namespace detail
-
-template <typename Function>
-inline void spawn(ASIO_MOVE_ARG(Function) function,
-    const boost::coroutines::attributes& attributes)
-{
-  typedef typename decay<Function>::type function_type;
-
-  typename associated_executor<function_type>::type ex(
-      (get_associated_executor)(function));
-
-  asio::spawn(ex, ASIO_MOVE_CAST(Function)(function), attributes);
-}
-
-template <typename Handler, typename Function>
-void spawn(ASIO_MOVE_ARG(Handler) handler,
-    ASIO_MOVE_ARG(Function) function,
-    const boost::coroutines::attributes& attributes,
-    typename enable_if<!is_executor<typename decay<Handler>::type>::value &&
-      !is_convertible<Handler&, execution_context&>::value>::type*)
-{
-  typedef typename decay<Handler>::type handler_type;
-  typedef typename decay<Function>::type function_type;
-
-  typename associated_executor<handler_type>::type ex(
-      (get_associated_executor)(handler));
-
-  typename associated_allocator<handler_type>::type a(
-      (get_associated_allocator)(handler));
-
-  detail::spawn_helper<handler_type, function_type> helper;
-  helper.data_.reset(
-      new detail::spawn_data<handler_type, function_type>(
-        ASIO_MOVE_CAST(Handler)(handler), true,
-        ASIO_MOVE_CAST(Function)(function)));
-  helper.attributes_ = attributes;
-
-  ex.dispatch(helper, a);
-}
-
-template <typename Handler, typename Function>
-void spawn(basic_yield_context<Handler> ctx,
-    ASIO_MOVE_ARG(Function) function,
-    const boost::coroutines::attributes& attributes)
-{
-  typedef typename decay<Function>::type function_type;
-
-  Handler handler(ctx.handler_); // Explicit copy that might be moved from.
-
-  typename associated_executor<Handler>::type ex(
-      (get_associated_executor)(handler));
-
-  typename associated_allocator<Handler>::type a(
-      (get_associated_allocator)(handler));
-
-  detail::spawn_helper<Handler, function_type> helper;
-  helper.data_.reset(
-      new detail::spawn_data<Handler, function_type>(
-        ASIO_MOVE_CAST(Handler)(handler), false,
-        ASIO_MOVE_CAST(Function)(function)));
-  helper.attributes_ = attributes;
-
-  ex.dispatch(helper, a);
-}
-
-template <typename Function, typename Executor>
-inline void spawn(const Executor& ex,
-    ASIO_MOVE_ARG(Function) function,
-    const boost::coroutines::attributes& attributes,
-    typename enable_if<is_executor<Executor>::value>::type*)
-{
-  asio::spawn(asio::strand<Executor>(ex),
-      ASIO_MOVE_CAST(Function)(function), attributes);
-}
-
-template <typename Function, typename Executor>
-inline void spawn(const strand<Executor>& ex,
-    ASIO_MOVE_ARG(Function) function,
-    const boost::coroutines::attributes& attributes)
-{
-  asio::spawn(asio::bind_executor(
-        ex, &detail::default_spawn_handler),
-      ASIO_MOVE_CAST(Function)(function), attributes);
-}
-
-template <typename Function>
-inline void spawn(const asio::io_context::strand& s,
-    ASIO_MOVE_ARG(Function) function,
-    const boost::coroutines::attributes& attributes)
-{
-  asio::spawn(asio::bind_executor(
-        s, &detail::default_spawn_handler),
-      ASIO_MOVE_CAST(Function)(function), attributes);
-}
-
-template <typename Function, typename ExecutionContext>
-inline void spawn(ExecutionContext& ctx,
-    ASIO_MOVE_ARG(Function) function,
-    const boost::coroutines::attributes& attributes,
-    typename enable_if<is_convertible<
-      ExecutionContext&, execution_context&>::value>::type*)
-{
-  asio::spawn(ctx.get_executor(),
-      ASIO_MOVE_CAST(Function)(function), attributes);
-}
-
-#endif // !defined(GENERATING_DOCUMENTATION)
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_IMPL_SPAWN_HPP
diff --git a/lib/asio/impl/src.cpp b/lib/asio/impl/src.cpp
deleted file mode 100644
index e8a5953..0000000
--- a/lib/asio/impl/src.cpp
+++ /dev/null
@@ -1,25 +0,0 @@
-//
-// impl/src.cpp
-// ~~~~~~~~~~~~
-//
-// 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)
-//
-
-#if defined(_MSC_VER) \
-  || defined(__BORLANDC__) \
-  || defined(__DMC__)
-# pragma message ( \
-    "This file is deprecated. " \
-    "Please #include <asio/impl/src.hpp> instead.")
-#elif defined(__GNUC__) \
-  || defined(__HP_aCC) \
-  || defined(__SUNPRO_CC) \
-  || defined(__IBMCPP__)
-# warning "This file is deprecated."
-# warning "Please #include <asio/impl/src.hpp> instead."
-#endif
-
-#include "asio/impl/src.hpp"
diff --git a/lib/asio/impl/src.hpp b/lib/asio/impl/src.hpp
deleted file mode 100644
index a72637b..0000000
--- a/lib/asio/impl/src.hpp
+++ /dev/null
@@ -1,82 +0,0 @@
-//
-// impl/src.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_IMPL_SRC_HPP
-#define ASIO_IMPL_SRC_HPP
-
-#define ASIO_SOURCE
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_HEADER_ONLY)
-# error Do not compile Asio library source with ASIO_HEADER_ONLY defined
-#endif
-
-#include "asio/impl/error.ipp"
-#include "asio/impl/error_code.ipp"
-#include "asio/impl/execution_context.ipp"
-#include "asio/impl/executor.ipp"
-#include "asio/impl/handler_alloc_hook.ipp"
-#include "asio/impl/io_context.ipp"
-#include "asio/impl/serial_port_base.ipp"
-#include "asio/impl/system_context.ipp"
-#include "asio/impl/thread_pool.ipp"
-#include "asio/detail/impl/buffer_sequence_adapter.ipp"
-#include "asio/detail/impl/descriptor_ops.ipp"
-#include "asio/detail/impl/dev_poll_reactor.ipp"
-#include "asio/detail/impl/epoll_reactor.ipp"
-#include "asio/detail/impl/eventfd_select_interrupter.ipp"
-#include "asio/detail/impl/handler_tracking.ipp"
-#include "asio/detail/impl/kqueue_reactor.ipp"
-#include "asio/detail/impl/null_event.ipp"
-#include "asio/detail/impl/pipe_select_interrupter.ipp"
-#include "asio/detail/impl/posix_event.ipp"
-#include "asio/detail/impl/posix_mutex.ipp"
-#include "asio/detail/impl/posix_thread.ipp"
-#include "asio/detail/impl/posix_tss_ptr.ipp"
-#include "asio/detail/impl/reactive_descriptor_service.ipp"
-#include "asio/detail/impl/reactive_serial_port_service.ipp"
-#include "asio/detail/impl/reactive_socket_service_base.ipp"
-#include "asio/detail/impl/resolver_service_base.ipp"
-#include "asio/detail/impl/scheduler.ipp"
-#include "asio/detail/impl/select_reactor.ipp"
-#include "asio/detail/impl/service_registry.ipp"
-#include "asio/detail/impl/signal_set_service.ipp"
-#include "asio/detail/impl/socket_ops.ipp"
-#include "asio/detail/impl/socket_select_interrupter.ipp"
-#include "asio/detail/impl/strand_executor_service.ipp"
-#include "asio/detail/impl/strand_service.ipp"
-#include "asio/detail/impl/throw_error.ipp"
-#include "asio/detail/impl/timer_queue_ptime.ipp"
-#include "asio/detail/impl/timer_queue_set.ipp"
-#include "asio/detail/impl/win_iocp_handle_service.ipp"
-#include "asio/detail/impl/win_iocp_io_context.ipp"
-#include "asio/detail/impl/win_iocp_serial_port_service.ipp"
-#include "asio/detail/impl/win_iocp_socket_service_base.ipp"
-#include "asio/detail/impl/win_event.ipp"
-#include "asio/detail/impl/win_mutex.ipp"
-#include "asio/detail/impl/win_object_handle_service.ipp"
-#include "asio/detail/impl/win_static_mutex.ipp"
-#include "asio/detail/impl/win_thread.ipp"
-#include "asio/detail/impl/win_tss_ptr.ipp"
-#include "asio/detail/impl/winrt_ssocket_service_base.ipp"
-#include "asio/detail/impl/winrt_timer_scheduler.ipp"
-#include "asio/detail/impl/winsock_init.ipp"
-#include "asio/generic/detail/impl/endpoint.ipp"
-#include "asio/ip/impl/address.ipp"
-#include "asio/ip/impl/address_v4.ipp"
-#include "asio/ip/impl/address_v6.ipp"
-#include "asio/ip/impl/host_name.ipp"
-#include "asio/ip/impl/network_v4.ipp"
-#include "asio/ip/impl/network_v6.ipp"
-#include "asio/ip/detail/impl/endpoint.ipp"
-#include "asio/local/detail/impl/endpoint.ipp"
-
-#endif // ASIO_IMPL_SRC_HPP
diff --git a/lib/asio/impl/system_context.hpp b/lib/asio/impl/system_context.hpp
deleted file mode 100644
index 87ffe76..0000000
--- a/lib/asio/impl/system_context.hpp
+++ /dev/null
@@ -1,34 +0,0 @@
-//
-// impl/system_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_IMPL_SYSTEM_CONTEXT_HPP
-#define ASIO_IMPL_SYSTEM_CONTEXT_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/system_executor.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-inline system_context::executor_type
-system_context::get_executor() ASIO_NOEXCEPT
-{
-  return system_executor();
-}
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_IMPL_SYSTEM_CONTEXT_HPP
diff --git a/lib/asio/impl/system_context.ipp b/lib/asio/impl/system_context.ipp
deleted file mode 100644
index 8ad5e41..0000000
--- a/lib/asio/impl/system_context.ipp
+++ /dev/null
@@ -1,73 +0,0 @@
-//
-// impl/system_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_IMPL_SYSTEM_CONTEXT_IPP
-#define ASIO_IMPL_SYSTEM_CONTEXT_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include "asio/system_context.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-struct system_context::thread_function
-{
-  detail::scheduler* scheduler_;
-
-  void operator()()
-  {
-    asio::error_code ec;
-    scheduler_->run(ec);
-  }
-};
-
-system_context::system_context()
-  : scheduler_(use_service<detail::scheduler>(*this))
-{
-  scheduler_.work_started();
-
-  thread_function f = { &scheduler_ };
-  std::size_t num_threads = detail::thread::hardware_concurrency() * 2;
-  threads_.create_threads(f, num_threads ? num_threads : 2);
-}
-
-system_context::~system_context()
-{
-  scheduler_.work_finished();
-  scheduler_.stop();
-  threads_.join();
-}
-
-void system_context::stop()
-{
-  scheduler_.stop();
-}
-
-bool system_context::stopped() const ASIO_NOEXCEPT
-{
-  return scheduler_.stopped();
-}
-
-void system_context::join()
-{
-  scheduler_.work_finished();
-  threads_.join();
-}
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_IMPL_SYSTEM_CONTEXT_IPP
diff --git a/lib/asio/impl/system_executor.hpp b/lib/asio/impl/system_executor.hpp
deleted file mode 100644
index ac4861f..0000000
--- a/lib/asio/impl/system_executor.hpp
+++ /dev/null
@@ -1,85 +0,0 @@
-//
-// impl/system_executor.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_IMPL_SYSTEM_EXECUTOR_HPP
-#define ASIO_IMPL_SYSTEM_EXECUTOR_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/executor_op.hpp"
-#include "asio/detail/global.hpp"
-#include "asio/detail/recycling_allocator.hpp"
-#include "asio/detail/type_traits.hpp"
-#include "asio/system_context.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-inline system_context& system_executor::context() const ASIO_NOEXCEPT
-{
-  return detail::global<system_context>();
-}
-
-template <typename Function, typename Allocator>
-void system_executor::dispatch(
-    ASIO_MOVE_ARG(Function) f, const Allocator&) const
-{
-  typename decay<Function>::type tmp(ASIO_MOVE_CAST(Function)(f));
-  asio_handler_invoke_helpers::invoke(tmp, tmp);
-}
-
-template <typename Function, typename Allocator>
-void system_executor::post(
-    ASIO_MOVE_ARG(Function) f, const Allocator& a) const
-{
-  typedef typename decay<Function>::type function_type;
-
-  system_context& ctx = detail::global<system_context>();
-
-  // Allocate and construct an operation to wrap the function.
-  typedef detail::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)(f), a);
-
-  ASIO_HANDLER_CREATION((ctx, *p.p,
-        "system_executor", &this->context(), 0, "post"));
-
-  ctx.scheduler_.post_immediate_completion(p.p, false);
-  p.v = p.p = 0;
-}
-
-template <typename Function, typename Allocator>
-void system_executor::defer(
-    ASIO_MOVE_ARG(Function) f, const Allocator& a) const
-{
-  typedef typename decay<Function>::type function_type;
-
-  system_context& ctx = detail::global<system_context>();
-
-  // Allocate and construct an operation to wrap the function.
-  typedef detail::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)(f), a);
-
-  ASIO_HANDLER_CREATION((ctx, *p.p,
-        "system_executor", &this->context(), 0, "defer"));
-
-  ctx.scheduler_.post_immediate_completion(p.p, true);
-  p.v = p.p = 0;
-}
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_IMPL_SYSTEM_EXECUTOR_HPP
diff --git a/lib/asio/impl/thread_pool.hpp b/lib/asio/impl/thread_pool.hpp
deleted file mode 100644
index 058e377..0000000
--- a/lib/asio/impl/thread_pool.hpp
+++ /dev/null
@@ -1,127 +0,0 @@
-//
-// impl/thread_pool.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_IMPL_THREAD_POOL_HPP
-#define ASIO_IMPL_THREAD_POOL_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/executor_op.hpp"
-#include "asio/detail/fenced_block.hpp"
-#include "asio/detail/recycling_allocator.hpp"
-#include "asio/detail/type_traits.hpp"
-#include "asio/execution_context.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-inline thread_pool::executor_type
-thread_pool::get_executor() ASIO_NOEXCEPT
-{
-  return executor_type(*this);
-}
-
-inline thread_pool&
-thread_pool::executor_type::context() const ASIO_NOEXCEPT
-{
-  return pool_;
-}
-
-inline void
-thread_pool::executor_type::on_work_started() const ASIO_NOEXCEPT
-{
-  pool_.scheduler_.work_started();
-}
-
-inline void thread_pool::executor_type::on_work_finished()
-const ASIO_NOEXCEPT
-{
-  pool_.scheduler_.work_finished();
-}
-
-template <typename Function, typename Allocator>
-void thread_pool::executor_type::dispatch(
-    ASIO_MOVE_ARG(Function) f, const Allocator& a) const
-{
-  typedef typename decay<Function>::type function_type;
-
-  // Invoke immediately if we are already inside the thread pool.
-  if (pool_.scheduler_.can_dispatch())
-  {
-    // Make a local, non-const copy of the function.
-    function_type tmp(ASIO_MOVE_CAST(Function)(f));
-
-    detail::fenced_block b(detail::fenced_block::full);
-    asio_handler_invoke_helpers::invoke(tmp, tmp);
-    return;
-  }
-
-  // Allocate and construct an operation to wrap the function.
-  typedef detail::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)(f), a);
-
-  ASIO_HANDLER_CREATION((pool_, *p.p,
-        "thread_pool", &this->context(), 0, "dispatch"));
-
-  pool_.scheduler_.post_immediate_completion(p.p, false);
-  p.v = p.p = 0;
-}
-
-template <typename Function, typename Allocator>
-void thread_pool::executor_type::post(
-    ASIO_MOVE_ARG(Function) f, const Allocator& a) const
-{
-  typedef typename decay<Function>::type function_type;
-
-  // Allocate and construct an operation to wrap the function.
-  typedef detail::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)(f), a);
-
-  ASIO_HANDLER_CREATION((pool_, *p.p,
-        "thread_pool", &this->context(), 0, "post"));
-
-  pool_.scheduler_.post_immediate_completion(p.p, false);
-  p.v = p.p = 0;
-}
-
-template <typename Function, typename Allocator>
-void thread_pool::executor_type::defer(
-    ASIO_MOVE_ARG(Function) f, const Allocator& a) const
-{
-  typedef typename decay<Function>::type function_type;
-
-  // Allocate and construct an operation to wrap the function.
-  typedef detail::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)(f), a);
-
-  ASIO_HANDLER_CREATION((pool_, *p.p,
-        "thread_pool", &this->context(), 0, "defer"));
-
-  pool_.scheduler_.post_immediate_completion(p.p, true);
-  p.v = p.p = 0;
-}
-
-inline bool
-thread_pool::executor_type::running_in_this_thread() const ASIO_NOEXCEPT
-{
-  return pool_.scheduler_.can_dispatch();
-}
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_IMPL_THREAD_POOL_HPP
diff --git a/lib/asio/impl/thread_pool.ipp b/lib/asio/impl/thread_pool.ipp
deleted file mode 100644
index 89583c1..0000000
--- a/lib/asio/impl/thread_pool.ipp
+++ /dev/null
@@ -1,76 +0,0 @@
-//
-// impl/thread_pool.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_IMPL_THREAD_POOL_IPP
-#define ASIO_IMPL_THREAD_POOL_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include "asio/thread_pool.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-struct thread_pool::thread_function
-{
-  detail::scheduler* scheduler_;
-
-  void operator()()
-  {
-    asio::error_code ec;
-    scheduler_->run(ec);
-  }
-};
-
-thread_pool::thread_pool()
-  : scheduler_(use_service<detail::scheduler>(*this))
-{
-  scheduler_.work_started();
-
-  thread_function f = { &scheduler_ };
-  std::size_t num_threads = detail::thread::hardware_concurrency() * 2;
-  threads_.create_threads(f, num_threads ? num_threads : 2);
-}
-
-thread_pool::thread_pool(std::size_t num_threads)
-  : scheduler_(use_service<detail::scheduler>(*this))
-{
-  scheduler_.work_started();
-
-  thread_function f = { &scheduler_ };
-  threads_.create_threads(f, num_threads);
-}
-
-thread_pool::~thread_pool()
-{
-  stop();
-  join();
-}
-
-void thread_pool::stop()
-{
-  scheduler_.stop();
-}
-
-void thread_pool::join()
-{
-  scheduler_.work_finished();
-  threads_.join();
-}
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_IMPL_THREAD_POOL_IPP
diff --git a/lib/asio/impl/use_future.hpp b/lib/asio/impl/use_future.hpp
deleted file mode 100644
index 51eb7e2..0000000
--- a/lib/asio/impl/use_future.hpp
+++ /dev/null
@@ -1,938 +0,0 @@
-//
-// impl/use_future.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_IMPL_USE_FUTURE_HPP
-#define ASIO_IMPL_USE_FUTURE_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include <future>
-#include <tuple>
-#include "asio/async_result.hpp"
-#include "asio/detail/memory.hpp"
-#include "asio/error_code.hpp"
-#include "asio/packaged_task.hpp"
-#include "asio/system_error.hpp"
-#include "asio/system_executor.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-#if defined(ASIO_HAS_VARIADIC_TEMPLATES)
-
-template <typename T, typename F, typename... Args>
-inline void promise_invoke_and_set(std::promise<T>& p,
-    F& f, ASIO_MOVE_ARG(Args)... args)
-{
-#if !defined(ASIO_NO_EXCEPTIONS)
-  try
-#endif // !defined(ASIO_NO_EXCEPTIONS)
-  {
-    p.set_value(f(ASIO_MOVE_CAST(Args)(args)...));
-  }
-#if !defined(ASIO_NO_EXCEPTIONS)
-  catch (...)
-  {
-    p.set_exception(std::current_exception());
-  }
-#endif // !defined(ASIO_NO_EXCEPTIONS)
-}
-
-template <typename F, typename... Args>
-inline void promise_invoke_and_set(std::promise<void>& p,
-    F& f, ASIO_MOVE_ARG(Args)... args)
-{
-#if !defined(ASIO_NO_EXCEPTIONS)
-  try
-#endif // !defined(ASIO_NO_EXCEPTIONS)
-  {
-    f(ASIO_MOVE_CAST(Args)(args)...);
-    p.set_value();
-  }
-#if !defined(ASIO_NO_EXCEPTIONS)
-  catch (...)
-  {
-    p.set_exception(std::current_exception());
-  }
-#endif // !defined(ASIO_NO_EXCEPTIONS)
-}
-
-#else // defined(ASIO_HAS_VARIADIC_TEMPLATES)
-
-template <typename T, typename F>
-inline void promise_invoke_and_set(std::promise<T>& p, F& f)
-{
-#if !defined(ASIO_NO_EXCEPTIONS)
-  try
-#endif // !defined(ASIO_NO_EXCEPTIONS)
-  {
-    p.set_value(f());
-  }
-#if !defined(ASIO_NO_EXCEPTIONS)
-  catch (...)
-  {
-    p.set_exception(std::current_exception());
-  }
-#endif // !defined(ASIO_NO_EXCEPTIONS)
-}
-
-template <typename F, typename Args>
-inline void promise_invoke_and_set(std::promise<void>& p, F& f)
-{
-#if !defined(ASIO_NO_EXCEPTIONS)
-  try
-#endif // !defined(ASIO_NO_EXCEPTIONS)
-  {
-    f();
-    p.set_value();
-#if !defined(ASIO_NO_EXCEPTIONS)
-  }
-  catch (...)
-  {
-    p.set_exception(std::current_exception());
-  }
-#endif // !defined(ASIO_NO_EXCEPTIONS)
-}
-
-#if defined(ASIO_NO_EXCEPTIONS)
-
-#define ASIO_PRIVATE_PROMISE_INVOKE_DEF(n) \
-  template <typename T, typename F, ASIO_VARIADIC_TPARAMS(n)> \
-  inline void promise_invoke_and_set(std::promise<T>& p, \
-      F& f, ASIO_VARIADIC_MOVE_PARAMS(n)) \
-  { \
-    p.set_value(f(ASIO_VARIADIC_MOVE_ARGS(n))); \
-  } \
-  \
-  template <typename F, ASIO_VARIADIC_TPARAMS(n)> \
-  inline void promise_invoke_and_set(std::promise<void>& p, \
-      F& f, ASIO_VARIADIC_MOVE_PARAMS(n)) \
-  { \
-    f(ASIO_VARIADIC_MOVE_ARGS(n)); \
-    p.set_value(); \
-  } \
-  /**/
-  ASIO_VARIADIC_GENERATE(ASIO_PRIVATE_PROMISE_INVOKE_DEF)
-#undef ASIO_PRIVATE_PROMISE_INVOKE_DEF
-
-#else // defined(ASIO_NO_EXCEPTIONS)
-
-#define ASIO_PRIVATE_PROMISE_INVOKE_DEF(n) \
-  template <typename T, typename F, ASIO_VARIADIC_TPARAMS(n)> \
-  inline void promise_invoke_and_set(std::promise<T>& p, \
-      F& f, ASIO_VARIADIC_MOVE_PARAMS(n)) \
-  { \
-    try \
-    { \
-      p.set_value(f(ASIO_VARIADIC_MOVE_ARGS(n))); \
-    } \
-    catch (...) \
-    { \
-      p.set_exception(std::current_exception()); \
-    } \
-  } \
-  \
-  template <typename F, ASIO_VARIADIC_TPARAMS(n)> \
-  inline void promise_invoke_and_set(std::promise<void>& p, \
-      F& f, ASIO_VARIADIC_MOVE_PARAMS(n)) \
-  { \
-    try \
-    { \
-      f(ASIO_VARIADIC_MOVE_ARGS(n)); \
-      p.set_value(); \
-    } \
-    catch (...) \
-    { \
-      p.set_exception(std::current_exception()); \
-    } \
-  } \
-  /**/
-  ASIO_VARIADIC_GENERATE(ASIO_PRIVATE_PROMISE_INVOKE_DEF)
-#undef ASIO_PRIVATE_PROMISE_INVOKE_DEF
-
-#endif // defined(ASIO_NO_EXCEPTIONS)
-
-#endif // defined(ASIO_HAS_VARIADIC_TEMPLATES)
-
-// A function object adapter to invoke a nullary function object and capture
-// any exception thrown into a promise.
-template <typename T, typename F>
-class promise_invoker
-{
-public:
-  promise_invoker(const shared_ptr<std::promise<T> >& p,
-      ASIO_MOVE_ARG(F) f)
-    : p_(p), f_(ASIO_MOVE_CAST(F)(f))
-  {
-  }
-
-  void operator()()
-  {
-#if !defined(ASIO_NO_EXCEPTIONS)
-    try
-#endif // !defined(ASIO_NO_EXCEPTIONS)
-    {
-      f_();
-    }
-#if !defined(ASIO_NO_EXCEPTIONS)
-    catch (...)
-    {
-      p_->set_exception(std::current_exception());
-    }
-#endif // !defined(ASIO_NO_EXCEPTIONS)
-  }
-
-private:
-  shared_ptr<std::promise<T> > p_;
-  typename decay<F>::type f_;
-};
-
-// An executor that adapts the system_executor to capture any exeption thrown
-// by a submitted function object and save it into a promise.
-template <typename T>
-class promise_executor
-{
-public:
-  explicit promise_executor(const shared_ptr<std::promise<T> >& p)
-    : p_(p)
-  {
-  }
-
-  execution_context& context() const ASIO_NOEXCEPT
-  {
-    return system_executor().context();
-  }
-
-  void on_work_started() const ASIO_NOEXCEPT {}
-  void on_work_finished() const ASIO_NOEXCEPT {}
-
-  template <typename F, typename A>
-  void dispatch(ASIO_MOVE_ARG(F) f, const A&) const
-  {
-    promise_invoker<T, F>(p_, ASIO_MOVE_CAST(F)(f))();
-  }
-
-  template <typename F, typename A>
-  void post(ASIO_MOVE_ARG(F) f, const A& a) const
-  {
-    system_executor().post(
-        promise_invoker<T, F>(p_, ASIO_MOVE_CAST(F)(f)), a);
-  }
-
-  template <typename F, typename A>
-  void defer(ASIO_MOVE_ARG(F) f, const A& a) const
-  {
-    system_executor().defer(
-        promise_invoker<T, F>(p_, ASIO_MOVE_CAST(F)(f)), a);
-  }
-
-  friend bool operator==(const promise_executor& a,
-      const promise_executor& b) ASIO_NOEXCEPT
-  {
-    return a.p_ == b.p_;
-  }
-
-  friend bool operator!=(const promise_executor& a,
-      const promise_executor& b) ASIO_NOEXCEPT
-  {
-    return a.p_ != b.p_;
-  }
-
-private:
-  shared_ptr<std::promise<T> > p_;
-};
-
-// The base class for all completion handlers that create promises.
-template <typename T>
-class promise_creator
-{
-public:
-  typedef promise_executor<T> executor_type;
-
-  executor_type get_executor() const ASIO_NOEXCEPT
-  {
-    return executor_type(p_);
-  }
-
-  typedef std::future<T> future_type;
-
-  future_type get_future()
-  {
-    return p_->get_future();
-  }
-
-protected:
-  template <typename Allocator>
-  void create_promise(const Allocator& a)
-  {
-    ASIO_REBIND_ALLOC(Allocator, char) b(a);
-    p_ = std::allocate_shared<std::promise<T>>(b, std::allocator_arg, b);
-  }
-
-  shared_ptr<std::promise<T> > p_;
-};
-
-// For completion signature void().
-class promise_handler_0
-  : public promise_creator<void>
-{
-public:
-  void operator()()
-  {
-    this->p_->set_value();
-  }
-};
-
-// For completion signature void(error_code).
-class promise_handler_ec_0
-  : public promise_creator<void>
-{
-public:
-  void operator()(const asio::error_code& ec)
-  {
-    if (ec)
-    {
-      this->p_->set_exception(
-          std::make_exception_ptr(
-            asio::system_error(ec)));
-    }
-    else
-    {
-      this->p_->set_value();
-    }
-  }
-};
-
-// For completion signature void(exception_ptr).
-class promise_handler_ex_0
-  : public promise_creator<void>
-{
-public:
-  void operator()(const std::exception_ptr& ex)
-  {
-    if (ex)
-    {
-      this->p_->set_exception(ex);
-    }
-    else
-    {
-      this->p_->set_value();
-    }
-  }
-};
-
-// For completion signature void(T).
-template <typename T>
-class promise_handler_1
-  : public promise_creator<T>
-{
-public:
-  template <typename Arg>
-  void operator()(ASIO_MOVE_ARG(Arg) arg)
-  {
-    this->p_->set_value(ASIO_MOVE_CAST(Arg)(arg));
-  }
-};
-
-// For completion signature void(error_code, T).
-template <typename T>
-class promise_handler_ec_1
-  : public promise_creator<T>
-{
-public:
-  template <typename Arg>
-  void operator()(const asio::error_code& ec,
-      ASIO_MOVE_ARG(Arg) arg)
-  {
-    if (ec)
-    {
-      this->p_->set_exception(
-          std::make_exception_ptr(
-            asio::system_error(ec)));
-    }
-    else
-      this->p_->set_value(ASIO_MOVE_CAST(Arg)(arg));
-  }
-};
-
-// For completion signature void(exception_ptr, T).
-template <typename T>
-class promise_handler_ex_1
-  : public promise_creator<T>
-{
-public:
-  template <typename Arg>
-  void operator()(const std::exception_ptr& ex,
-      ASIO_MOVE_ARG(Arg) arg)
-  {
-    if (ex)
-      this->p_->set_exception(ex);
-    else
-      this->p_->set_value(ASIO_MOVE_CAST(Arg)(arg));
-  }
-};
-
-// For completion signature void(T1, ..., Tn);
-template <typename T>
-class promise_handler_n
-  : public promise_creator<T>
-{
-public:
-#if defined(ASIO_HAS_VARIADIC_TEMPLATES)
-
-  template <typename... Args>
-  void operator()(ASIO_MOVE_ARG(Args)... args)
-  {
-    this->p_->set_value(
-        std::forward_as_tuple(
-          ASIO_MOVE_CAST(Args)(args)...));
-  }
-
-#else // defined(ASIO_HAS_VARIADIC_TEMPLATES)
-
-#define ASIO_PRIVATE_CALL_OP_DEF(n) \
-  template <ASIO_VARIADIC_TPARAMS(n)> \
-  void operator()(ASIO_VARIADIC_MOVE_PARAMS(n)) \
-  {\
-    this->p_->set_value( \
-        std::forward_as_tuple( \
-          ASIO_VARIADIC_MOVE_ARGS(n))); \
-  } \
-  /**/
-  ASIO_VARIADIC_GENERATE(ASIO_PRIVATE_CALL_OP_DEF)
-#undef ASIO_PRIVATE_CALL_OP_DEF
-
-#endif // defined(ASIO_HAS_VARIADIC_TEMPLATES)
-};
-
-// For completion signature void(error_code, T1, ..., Tn);
-template <typename T>
-class promise_handler_ec_n
-  : public promise_creator<T>
-{
-public:
-#if defined(ASIO_HAS_VARIADIC_TEMPLATES)
-
-  template <typename... Args>
-  void operator()(const asio::error_code& ec,
-      ASIO_MOVE_ARG(Args)... args)
-  {
-    if (ec)
-    {
-      this->p_->set_exception(
-          std::make_exception_ptr(
-            asio::system_error(ec)));
-    }
-    else
-    {
-      this->p_->set_value(
-          std::forward_as_tuple(
-            ASIO_MOVE_CAST(Args)(args)...));
-    }
-  }
-
-#else // defined(ASIO_HAS_VARIADIC_TEMPLATES)
-
-#define ASIO_PRIVATE_CALL_OP_DEF(n) \
-  template <ASIO_VARIADIC_TPARAMS(n)> \
-  void operator()(const asio::error_code& ec, \
-      ASIO_VARIADIC_MOVE_PARAMS(n)) \
-  {\
-    if (ec) \
-    { \
-      this->p_->set_exception( \
-          std::make_exception_ptr( \
-            asio::system_error(ec))); \
-    } \
-    else \
-    { \
-      this->p_->set_value( \
-          std::forward_as_tuple( \
-            ASIO_VARIADIC_MOVE_ARGS(n))); \
-    } \
-  } \
-  /**/
-  ASIO_VARIADIC_GENERATE(ASIO_PRIVATE_CALL_OP_DEF)
-#undef ASIO_PRIVATE_CALL_OP_DEF
-
-#endif // defined(ASIO_HAS_VARIADIC_TEMPLATES)
-};
-
-// For completion signature void(exception_ptr, T1, ..., Tn);
-template <typename T>
-class promise_handler_ex_n
-  : public promise_creator<T>
-{
-public:
-#if defined(ASIO_HAS_VARIADIC_TEMPLATES)
-
-  template <typename... Args>
-  void operator()(const std::exception_ptr& ex,
-      ASIO_MOVE_ARG(Args)... args)
-  {
-    if (ex)
-      this->p_->set_exception(ex);
-    else
-    {
-      this->p_->set_value(
-          std::forward_as_tuple(
-            ASIO_MOVE_CAST(Args)(args)...));
-    }
-  }
-
-#else // defined(ASIO_HAS_VARIADIC_TEMPLATES)
-
-#define ASIO_PRIVATE_CALL_OP_DEF(n) \
-  template <ASIO_VARIADIC_TPARAMS(n)> \
-  void operator()(const std::exception_ptr& ex, \
-      ASIO_VARIADIC_MOVE_PARAMS(n)) \
-  {\
-    if (ex) \
-      this->p_->set_exception(ex); \
-    else \
-    { \
-      this->p_->set_value( \
-          std::forward_as_tuple( \
-            ASIO_VARIADIC_MOVE_ARGS(n))); \
-    } \
-  } \
-  /**/
-  ASIO_VARIADIC_GENERATE(ASIO_PRIVATE_CALL_OP_DEF)
-#undef ASIO_PRIVATE_CALL_OP_DEF
-
-#endif // defined(ASIO_HAS_VARIADIC_TEMPLATES)
-};
-
-// Helper template to choose the appropriate concrete promise handler
-// implementation based on the supplied completion signature.
-template <typename> class promise_handler_selector;
-
-template <>
-class promise_handler_selector<void()>
-  : public promise_handler_0 {};
-
-template <>
-class promise_handler_selector<void(asio::error_code)>
-  : public promise_handler_ec_0 {};
-
-template <>
-class promise_handler_selector<void(std::exception_ptr)>
-  : public promise_handler_ex_0 {};
-
-template <typename Arg>
-class promise_handler_selector<void(Arg)>
-  : public promise_handler_1<Arg> {};
-
-template <typename Arg>
-class promise_handler_selector<void(asio::error_code, Arg)>
-  : public promise_handler_ec_1<Arg> {};
-
-template <typename Arg>
-class promise_handler_selector<void(std::exception_ptr, Arg)>
-  : public promise_handler_ex_1<Arg> {};
-
-#if defined(ASIO_HAS_VARIADIC_TEMPLATES)
-
-template <typename... Arg>
-class promise_handler_selector<void(Arg...)>
-  : public promise_handler_n<std::tuple<Arg...> > {};
-
-template <typename... Arg>
-class promise_handler_selector<void(asio::error_code, Arg...)>
-  : public promise_handler_ec_n<std::tuple<Arg...> > {};
-
-template <typename... Arg>
-class promise_handler_selector<void(std::exception_ptr, Arg...)>
-  : public promise_handler_ex_n<std::tuple<Arg...> > {};
-
-#else // defined(ASIO_HAS_VARIADIC_TEMPLATES)
-
-#define ASIO_PRIVATE_PROMISE_SELECTOR_DEF(n) \
-  template <typename Arg, ASIO_VARIADIC_TPARAMS(n)> \
-  class promise_handler_selector< \
-    void(Arg, ASIO_VARIADIC_TARGS(n))> \
-      : public promise_handler_n< \
-        std::tuple<Arg, ASIO_VARIADIC_TARGS(n)> > {}; \
-  \
-  template <typename Arg, ASIO_VARIADIC_TPARAMS(n)> \
-  class promise_handler_selector< \
-    void(asio::error_code, Arg, ASIO_VARIADIC_TARGS(n))> \
-      : public promise_handler_ec_n< \
-        std::tuple<Arg, ASIO_VARIADIC_TARGS(n)> > {}; \
-  \
-  template <typename Arg, ASIO_VARIADIC_TPARAMS(n)> \
-  class promise_handler_selector< \
-    void(std::exception_ptr, Arg, ASIO_VARIADIC_TARGS(n))> \
-      : public promise_handler_ex_n< \
-        std::tuple<Arg, ASIO_VARIADIC_TARGS(n)> > {}; \
-  /**/
-  ASIO_VARIADIC_GENERATE(ASIO_PRIVATE_PROMISE_SELECTOR_DEF)
-#undef ASIO_PRIVATE_PROMISE_SELECTOR_DEF
-
-#endif // defined(ASIO_HAS_VARIADIC_TEMPLATES)
-
-// Completion handlers produced from the use_future completion token, when not
-// using use_future::operator().
-template <typename Signature, typename Allocator>
-class promise_handler
-  : public promise_handler_selector<Signature>
-{
-public:
-  typedef Allocator allocator_type;
-  typedef void result_type;
-
-  promise_handler(use_future_t<Allocator> u)
-    : allocator_(u.get_allocator())
-  {
-    this->create_promise(allocator_);
-  }
-
-  allocator_type get_allocator() const ASIO_NOEXCEPT
-  {
-    return allocator_;
-  }
-
-private:
-  Allocator allocator_;
-};
-
-template <typename Function, typename Signature, typename Allocator>
-inline void asio_handler_invoke(Function& f,
-    promise_handler<Signature, Allocator>* h)
-{
-  typename promise_handler<Signature, Allocator>::executor_type
-    ex(h->get_executor());
-  ex.dispatch(ASIO_MOVE_CAST(Function)(f), std::allocator<void>());
-}
-
-template <typename Function, typename Signature, typename Allocator>
-inline void asio_handler_invoke(const Function& f,
-    promise_handler<Signature, Allocator>* h)
-{
-  typename promise_handler<Signature, Allocator>::executor_type
-    ex(h->get_executor());
-  ex.dispatch(f, std::allocator<void>());
-}
-
-// Helper base class for async_result specialisation.
-template <typename Signature, typename Allocator>
-class promise_async_result
-{
-public:
-  typedef promise_handler<Signature, Allocator> completion_handler_type;
-  typedef typename completion_handler_type::future_type return_type;
-
-  explicit promise_async_result(completion_handler_type& h)
-    : future_(h.get_future())
-  {
-  }
-
-  return_type get()
-  {
-    return ASIO_MOVE_CAST(return_type)(future_);
-  }
-
-private:
-  return_type future_;
-};
-
-// Return value from use_future::operator().
-template <typename Function, typename Allocator>
-class packaged_token
-{
-public:
-  packaged_token(Function f, const Allocator& a)
-    : function_(ASIO_MOVE_CAST(Function)(f)),
-      allocator_(a)
-  {
-  }
-
-//private:
-  Function function_;
-  Allocator allocator_;
-};
-
-// Completion handlers produced from the use_future completion token, when
-// using use_future::operator().
-template <typename Function, typename Allocator, typename Result>
-class packaged_handler
-  : public promise_creator<Result>
-{
-public:
-  typedef Allocator allocator_type;
-  typedef void result_type;
-
-  packaged_handler(packaged_token<Function, Allocator> t)
-    : function_(ASIO_MOVE_CAST(Function)(t.function_)),
-      allocator_(t.allocator_)
-  {
-    this->create_promise(allocator_);
-  }
-
-  allocator_type get_allocator() const ASIO_NOEXCEPT
-  {
-    return allocator_;
-  }
-
-#if defined(ASIO_HAS_VARIADIC_TEMPLATES)
-
-  template <typename... Args>
-  void operator()(ASIO_MOVE_ARG(Args)... args)
-  {
-    (promise_invoke_and_set)(*this->p_,
-        function_, ASIO_MOVE_CAST(Args)(args)...);
-  }
-
-#else // defined(ASIO_HAS_VARIADIC_TEMPLATES)
-
-  void operator()()
-  {
-    (promise_invoke_and_set)(*this->p_, function_);
-  }
-
-#define ASIO_PRIVATE_CALL_OP_DEF(n) \
-  template <ASIO_VARIADIC_TPARAMS(n)> \
-  void operator()(ASIO_VARIADIC_MOVE_PARAMS(n)) \
-  {\
-    (promise_invoke_and_set)(*this->p_, \
-        function_, ASIO_VARIADIC_MOVE_ARGS(n)); \
-  } \
-  /**/
-  ASIO_VARIADIC_GENERATE(ASIO_PRIVATE_CALL_OP_DEF)
-#undef ASIO_PRIVATE_CALL_OP_DEF
-
-#endif // defined(ASIO_HAS_VARIADIC_TEMPLATES)
-
-private:
-  Function function_;
-  Allocator allocator_;
-};
-
-template <typename Function,
-    typename Function1, typename Allocator, typename Result>
-inline void asio_handler_invoke(Function& f,
-    packaged_handler<Function1, Allocator, Result>* h)
-{
-  typename packaged_handler<Function1, Allocator, Result>::executor_type
-    ex(h->get_executor());
-  ex.dispatch(ASIO_MOVE_CAST(Function)(f), std::allocator<void>());
-}
-
-template <typename Function,
-    typename Function1, typename Allocator, typename Result>
-inline void asio_handler_invoke(const Function& f,
-    packaged_handler<Function1, Allocator, Result>* h)
-{
-  typename packaged_handler<Function1, Allocator, Result>::executor_type
-    ex(h->get_executor());
-  ex.dispatch(f, std::allocator<void>());
-}
-
-// Helper base class for async_result specialisation.
-template <typename Function, typename Allocator, typename Result>
-class packaged_async_result
-{
-public:
-  typedef packaged_handler<Function, Allocator, Result> completion_handler_type;
-  typedef typename completion_handler_type::future_type return_type;
-
-  explicit packaged_async_result(completion_handler_type& h)
-    : future_(h.get_future())
-  {
-  }
-
-  return_type get()
-  {
-    return ASIO_MOVE_CAST(return_type)(future_);
-  }
-
-private:
-  return_type future_;
-};
-
-} // namespace detail
-
-template <typename Allocator> template <typename Function>
-inline detail::packaged_token<typename decay<Function>::type, Allocator>
-use_future_t<Allocator>::operator()(ASIO_MOVE_ARG(Function) f) const
-{
-  return detail::packaged_token<typename decay<Function>::type, Allocator>(
-      ASIO_MOVE_CAST(Function)(f), allocator_);
-}
-
-#if !defined(GENERATING_DOCUMENTATION)
-
-#if defined(ASIO_HAS_VARIADIC_TEMPLATES)
-
-template <typename Allocator, typename Result, typename... Args>
-class async_result<use_future_t<Allocator>, Result(Args...)>
-  : public detail::promise_async_result<
-      void(typename decay<Args>::type...), Allocator>
-{
-public:
-  explicit async_result(
-    typename detail::promise_async_result<void(typename decay<Args>::type...),
-      Allocator>::completion_handler_type& h)
-    : detail::promise_async_result<
-        void(typename decay<Args>::type...), Allocator>(h)
-  {
-  }
-};
-
-template <typename Function, typename Allocator,
-    typename Result, typename... Args>
-class async_result<detail::packaged_token<Function, Allocator>, Result(Args...)>
-  : public detail::packaged_async_result<Function, Allocator,
-      typename result_of<Function(Args...)>::type>
-{
-public:
-  explicit async_result(
-    typename detail::packaged_async_result<Function, Allocator,
-      typename result_of<Function(Args...)>::type>::completion_handler_type& h)
-    : detail::packaged_async_result<Function, Allocator,
-        typename result_of<Function(Args...)>::type>(h)
-  {
-  }
-};
-
-#else // defined(ASIO_HAS_VARIADIC_TEMPLATES)
-
-template <typename Allocator, typename Result>
-class async_result<use_future_t<Allocator>, Result()>
-  : public detail::promise_async_result<void(), Allocator>
-{
-public:
-  explicit async_result(
-    typename detail::promise_async_result<
-      void(), Allocator>::completion_handler_type& h)
-    : detail::promise_async_result<void(), Allocator>(h)
-  {
-  }
-};
-
-template <typename Function, typename Allocator, typename Result>
-class async_result<detail::packaged_token<Function, Allocator>, Result()>
-  : public detail::packaged_async_result<Function, Allocator,
-      typename result_of<Function()>::type>
-{
-public:
-  explicit async_result(
-    typename detail::packaged_async_result<Function, Allocator,
-      typename result_of<Function()>::type>::completion_handler_type& h)
-    : detail::packaged_async_result<Function, Allocator,
-        typename result_of<Function()>::type>(h)
-  {
-  }
-};
-
-#define ASIO_PRIVATE_ASYNC_RESULT_DEF(n) \
-  template <typename Allocator, \
-      typename Result, ASIO_VARIADIC_TPARAMS(n)> \
-  class async_result<use_future_t<Allocator>, \
-      Result(ASIO_VARIADIC_TARGS(n))> \
-    : public detail::promise_async_result< \
-        void(ASIO_VARIADIC_DECAY(n)), Allocator> \
-  { \
-  public: \
-    explicit async_result( \
-      typename detail::promise_async_result< \
-        void(ASIO_VARIADIC_DECAY(n)), \
-        Allocator>::completion_handler_type& h) \
-      : detail::promise_async_result< \
-          void(ASIO_VARIADIC_DECAY(n)), Allocator>(h) \
-    { \
-    } \
-  }; \
-  \
-  template <typename Function, typename Allocator, \
-      typename Result, ASIO_VARIADIC_TPARAMS(n)> \
-  class async_result<detail::packaged_token<Function, Allocator>, \
-      Result(ASIO_VARIADIC_TARGS(n))> \
-    : public detail::packaged_async_result<Function, Allocator, \
-        typename result_of<Function(ASIO_VARIADIC_TARGS(n))>::type> \
-  { \
-  public: \
-    explicit async_result( \
-      typename detail::packaged_async_result<Function, Allocator, \
-        typename result_of<Function(ASIO_VARIADIC_TARGS(n))>::type \
-        >::completion_handler_type& h) \
-      : detail::packaged_async_result<Function, Allocator, \
-          typename result_of<Function(ASIO_VARIADIC_TARGS(n))>::type>(h) \
-    { \
-    } \
-  }; \
-  /**/
-  ASIO_VARIADIC_GENERATE(ASIO_PRIVATE_ASYNC_RESULT_DEF)
-#undef ASIO_PRIVATE_ASYNC_RESULT_DEF
-
-#endif // defined(ASIO_HAS_VARIADIC_TEMPLATES)
-
-#if !defined(ASIO_NO_DEPRECATED)
-
-template <typename Allocator, typename Signature>
-struct handler_type<use_future_t<Allocator>, Signature>
-{
-  typedef typename async_result<use_future_t<Allocator>,
-    Signature>::completion_handler_type type;
-};
-
-template <typename Signature, typename Allocator>
-class async_result<detail::promise_handler<Signature, Allocator> >
-  : public detail::promise_async_result<Signature, Allocator>
-{
-public:
-  typedef typename detail::promise_async_result<
-    Signature, Allocator>::return_type type;
-
-  explicit async_result(
-    typename detail::promise_async_result<
-      Signature, Allocator>::completion_handler_type& h)
-    : detail::promise_async_result<Signature, Allocator>(h)
-  {
-  }
-};
-
-template <typename Function, typename Allocator, typename Signature>
-struct handler_type<detail::packaged_token<Function, Allocator>, Signature>
-{
-  typedef typename async_result<detail::packaged_token<Function, Allocator>,
-    Signature>::completion_handler_type type;
-};
-
-template <typename Function, typename Allocator, typename Result>
-class async_result<detail::packaged_handler<Function, Allocator, Result> >
-  : public detail::packaged_async_result<Function, Allocator, Result>
-{
-public:
-  typedef typename detail::packaged_async_result<
-    Function, Allocator, Result>::return_type type;
-
-  explicit async_result(
-    typename detail::packaged_async_result<
-      Function, Allocator, Result>::completion_handler_type& h)
-    : detail::packaged_async_result<Function, Allocator, Result>(h)
-  {
-  }
-};
-
-#endif // !defined(ASIO_NO_DEPRECATED)
-
-#endif // !defined(GENERATING_DOCUMENTATION)
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_IMPL_USE_FUTURE_HPP
diff --git a/lib/asio/impl/write.hpp b/lib/asio/impl/write.hpp
deleted file mode 100644
index d07e8d3..0000000
--- a/lib/asio/impl/write.hpp
+++ /dev/null
@@ -1,674 +0,0 @@
-//
-// impl/write.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_IMPL_WRITE_HPP
-#define ASIO_IMPL_WRITE_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/associated_allocator.hpp"
-#include "asio/associated_executor.hpp"
-#include "asio/buffer.hpp"
-#include "asio/completion_condition.hpp"
-#include "asio/detail/array_fwd.hpp"
-#include "asio/detail/base_from_completion_cond.hpp"
-#include "asio/detail/bind_handler.hpp"
-#include "asio/detail/consuming_buffers.hpp"
-#include "asio/detail/dependent_type.hpp"
-#include "asio/detail/handler_alloc_helpers.hpp"
-#include "asio/detail/handler_cont_helpers.hpp"
-#include "asio/detail/handler_invoke_helpers.hpp"
-#include "asio/detail/handler_type_requirements.hpp"
-#include "asio/detail/throw_error.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-namespace detail
-{
-  template <typename SyncWriteStream, typename ConstBufferSequence,
-      typename ConstBufferIterator, typename CompletionCondition>
-  std::size_t write_buffer_sequence(SyncWriteStream& s,
-      const ConstBufferSequence& buffers, const ConstBufferIterator&,
-      CompletionCondition completion_condition, asio::error_code& ec)
-  {
-    ec = asio::error_code();
-    asio::detail::consuming_buffers<const_buffer,
-        ConstBufferSequence, ConstBufferIterator> tmp(buffers);
-    while (!tmp.empty())
-    {
-      if (std::size_t max_size = detail::adapt_completion_condition_result(
-            completion_condition(ec, tmp.total_consumed())))
-        tmp.consume(s.write_some(tmp.prepare(max_size), ec));
-      else
-        break;
-    }
-    return tmp.total_consumed();;
-  }
-} // namespace detail
-
-template <typename SyncWriteStream, typename ConstBufferSequence,
-    typename CompletionCondition>
-inline std::size_t write(SyncWriteStream& s, const ConstBufferSequence& buffers,
-    CompletionCondition completion_condition, asio::error_code& ec,
-    typename enable_if<
-      is_const_buffer_sequence<ConstBufferSequence>::value
-    >::type*)
-{
-  return detail::write_buffer_sequence(s, buffers,
-      asio::buffer_sequence_begin(buffers), completion_condition, ec);
-}
-
-template <typename SyncWriteStream, typename ConstBufferSequence>
-inline std::size_t write(SyncWriteStream& s, const ConstBufferSequence& buffers,
-    typename enable_if<
-      is_const_buffer_sequence<ConstBufferSequence>::value
-    >::type*)
-{
-  asio::error_code ec;
-  std::size_t bytes_transferred = write(s, buffers, transfer_all(), ec);
-  asio::detail::throw_error(ec, "write");
-  return bytes_transferred;
-}
-
-template <typename SyncWriteStream, typename ConstBufferSequence>
-inline std::size_t write(SyncWriteStream& s, const ConstBufferSequence& buffers,
-    asio::error_code& ec,
-    typename enable_if<
-      is_const_buffer_sequence<ConstBufferSequence>::value
-    >::type*)
-{
-  return write(s, buffers, transfer_all(), ec);
-}
-
-template <typename SyncWriteStream, typename ConstBufferSequence,
-    typename CompletionCondition>
-inline std::size_t write(SyncWriteStream& s, const ConstBufferSequence& buffers,
-    CompletionCondition completion_condition,
-    typename enable_if<
-      is_const_buffer_sequence<ConstBufferSequence>::value
-    >::type*)
-{
-  asio::error_code ec;
-  std::size_t bytes_transferred = write(s, buffers, completion_condition, ec);
-  asio::detail::throw_error(ec, "write");
-  return bytes_transferred;
-}
-
-template <typename SyncWriteStream, typename DynamicBuffer,
-    typename CompletionCondition>
-std::size_t write(SyncWriteStream& s,
-    ASIO_MOVE_ARG(DynamicBuffer) buffers,
-    CompletionCondition completion_condition, asio::error_code& ec,
-    typename enable_if<
-      is_dynamic_buffer<typename decay<DynamicBuffer>::type>::value
-    >::type*)
-{
-  typename decay<DynamicBuffer>::type b(
-      ASIO_MOVE_CAST(DynamicBuffer)(buffers));
-
-  std::size_t bytes_transferred = write(s, b.data(), completion_condition, ec);
-  b.consume(bytes_transferred);
-  return bytes_transferred;
-}
-
-template <typename SyncWriteStream, typename DynamicBuffer>
-inline std::size_t write(SyncWriteStream& s,
-    ASIO_MOVE_ARG(DynamicBuffer) buffers,
-    typename enable_if<
-      is_dynamic_buffer<typename decay<DynamicBuffer>::type>::value
-    >::type*)
-{
-  asio::error_code ec;
-  std::size_t bytes_transferred = write(s,
-      ASIO_MOVE_CAST(DynamicBuffer)(buffers),
-      transfer_all(), ec);
-  asio::detail::throw_error(ec, "write");
-  return bytes_transferred;
-}
-
-template <typename SyncWriteStream, typename DynamicBuffer>
-inline std::size_t write(SyncWriteStream& s,
-    ASIO_MOVE_ARG(DynamicBuffer) buffers,
-    asio::error_code& ec,
-    typename enable_if<
-      is_dynamic_buffer<typename decay<DynamicBuffer>::type>::value
-    >::type*)
-{
-  return write(s, ASIO_MOVE_CAST(DynamicBuffer)(buffers),
-      transfer_all(), ec);
-}
-
-template <typename SyncWriteStream, typename DynamicBuffer,
-    typename CompletionCondition>
-inline std::size_t write(SyncWriteStream& s,
-    ASIO_MOVE_ARG(DynamicBuffer) buffers,
-    CompletionCondition completion_condition,
-    typename enable_if<
-      is_dynamic_buffer<typename decay<DynamicBuffer>::type>::value
-    >::type*)
-{
-  asio::error_code ec;
-  std::size_t bytes_transferred = write(s,
-      ASIO_MOVE_CAST(DynamicBuffer)(buffers),
-      completion_condition, ec);
-  asio::detail::throw_error(ec, "write");
-  return bytes_transferred;
-}
-
-#if !defined(ASIO_NO_EXTENSIONS)
-#if !defined(ASIO_NO_IOSTREAM)
-
-template <typename SyncWriteStream, typename Allocator,
-    typename CompletionCondition>
-inline std::size_t write(SyncWriteStream& s,
-    asio::basic_streambuf<Allocator>& b,
-    CompletionCondition completion_condition, asio::error_code& ec)
-{
-  return write(s, basic_streambuf_ref<Allocator>(b), completion_condition, ec);
-}
-
-template <typename SyncWriteStream, typename Allocator>
-inline std::size_t write(SyncWriteStream& s,
-    asio::basic_streambuf<Allocator>& b)
-{
-  return write(s, basic_streambuf_ref<Allocator>(b));
-}
-
-template <typename SyncWriteStream, typename Allocator>
-inline std::size_t write(SyncWriteStream& s,
-    asio::basic_streambuf<Allocator>& b,
-    asio::error_code& ec)
-{
-  return write(s, basic_streambuf_ref<Allocator>(b), ec);
-}
-
-template <typename SyncWriteStream, typename Allocator,
-    typename CompletionCondition>
-inline std::size_t write(SyncWriteStream& s,
-    asio::basic_streambuf<Allocator>& b,
-    CompletionCondition completion_condition)
-{
-  return write(s, basic_streambuf_ref<Allocator>(b), completion_condition);
-}
-
-#endif // !defined(ASIO_NO_IOSTREAM)
-#endif // !defined(ASIO_NO_EXTENSIONS)
-
-namespace detail
-{
-  template <typename AsyncWriteStream, typename ConstBufferSequence,
-      typename ConstBufferIterator, typename CompletionCondition,
-      typename WriteHandler>
-  class write_op
-    : detail::base_from_completion_cond<CompletionCondition>
-  {
-  public:
-    write_op(AsyncWriteStream& stream, const ConstBufferSequence& buffers,
-        CompletionCondition completion_condition, WriteHandler& handler)
-      : detail::base_from_completion_cond<
-          CompletionCondition>(completion_condition),
-        stream_(stream),
-        buffers_(buffers),
-        start_(0),
-        handler_(ASIO_MOVE_CAST(WriteHandler)(handler))
-    {
-    }
-
-#if defined(ASIO_HAS_MOVE)
-    write_op(const write_op& other)
-      : detail::base_from_completion_cond<CompletionCondition>(other),
-        stream_(other.stream_),
-        buffers_(other.buffers_),
-        start_(other.start_),
-        handler_(other.handler_)
-    {
-    }
-
-    write_op(write_op&& other)
-      : detail::base_from_completion_cond<CompletionCondition>(other),
-        stream_(other.stream_),
-        buffers_(other.buffers_),
-        start_(other.start_),
-        handler_(ASIO_MOVE_CAST(WriteHandler)(other.handler_))
-    {
-    }
-#endif // defined(ASIO_HAS_MOVE)
-
-    void operator()(const asio::error_code& ec,
-        std::size_t bytes_transferred, int start = 0)
-    {
-      std::size_t max_size;
-      switch (start_ = start)
-      {
-        case 1:
-        max_size = this->check_for_completion(ec, buffers_.total_consumed());
-        do
-        {
-          stream_.async_write_some(buffers_.prepare(max_size),
-              ASIO_MOVE_CAST(write_op)(*this));
-          return; default:
-          buffers_.consume(bytes_transferred);
-          if ((!ec && bytes_transferred == 0) || buffers_.empty())
-            break;
-          max_size = this->check_for_completion(ec, buffers_.total_consumed());
-        } while (max_size > 0);
-
-        handler_(ec, buffers_.total_consumed());
-      }
-    }
-
-  //private:
-    AsyncWriteStream& stream_;
-    asio::detail::consuming_buffers<const_buffer,
-        ConstBufferSequence, ConstBufferIterator> buffers_;
-    int start_;
-    WriteHandler handler_;
-  };
-
-  template <typename AsyncWriteStream, typename ConstBufferSequence,
-      typename ConstBufferIterator, typename CompletionCondition,
-      typename WriteHandler>
-  inline void* asio_handler_allocate(std::size_t size,
-      write_op<AsyncWriteStream, ConstBufferSequence, ConstBufferIterator,
-        CompletionCondition, WriteHandler>* this_handler)
-  {
-    return asio_handler_alloc_helpers::allocate(
-        size, this_handler->handler_);
-  }
-
-  template <typename AsyncWriteStream, typename ConstBufferSequence,
-      typename ConstBufferIterator, typename CompletionCondition,
-      typename WriteHandler>
-  inline void asio_handler_deallocate(void* pointer, std::size_t size,
-      write_op<AsyncWriteStream, ConstBufferSequence, ConstBufferIterator,
-        CompletionCondition, WriteHandler>* this_handler)
-  {
-    asio_handler_alloc_helpers::deallocate(
-        pointer, size, this_handler->handler_);
-  }
-
-  template <typename AsyncWriteStream, typename ConstBufferSequence,
-      typename ConstBufferIterator, typename CompletionCondition,
-      typename WriteHandler>
-  inline bool asio_handler_is_continuation(
-      write_op<AsyncWriteStream, ConstBufferSequence, ConstBufferIterator,
-        CompletionCondition, WriteHandler>* this_handler)
-  {
-    return this_handler->start_ == 0 ? true
-      : asio_handler_cont_helpers::is_continuation(
-          this_handler->handler_);
-  }
-
-  template <typename Function, typename AsyncWriteStream,
-      typename ConstBufferSequence, typename ConstBufferIterator,
-      typename CompletionCondition, typename WriteHandler>
-  inline void asio_handler_invoke(Function& function,
-      write_op<AsyncWriteStream, ConstBufferSequence, ConstBufferIterator,
-        CompletionCondition, WriteHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-
-  template <typename Function, typename AsyncWriteStream,
-      typename ConstBufferSequence, typename ConstBufferIterator,
-      typename CompletionCondition, typename WriteHandler>
-  inline void asio_handler_invoke(const Function& function,
-      write_op<AsyncWriteStream, ConstBufferSequence, ConstBufferIterator,
-        CompletionCondition, WriteHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-
-  template <typename AsyncWriteStream, typename ConstBufferSequence,
-      typename ConstBufferIterator, typename CompletionCondition,
-      typename WriteHandler>
-  inline void start_write_buffer_sequence_op(AsyncWriteStream& stream,
-      const ConstBufferSequence& buffers, const ConstBufferIterator&,
-      CompletionCondition completion_condition, WriteHandler& handler)
-  {
-    detail::write_op<AsyncWriteStream, ConstBufferSequence,
-      ConstBufferIterator, CompletionCondition, WriteHandler>(
-        stream, buffers, completion_condition, handler)(
-          asio::error_code(), 0, 1);
-  }
-
-} // namespace detail
-
-#if !defined(GENERATING_DOCUMENTATION)
-
-template <typename AsyncWriteStream, typename ConstBufferSequence,
-    typename ConstBufferIterator, typename CompletionCondition,
-    typename WriteHandler, typename Allocator>
-struct associated_allocator<
-    detail::write_op<AsyncWriteStream, ConstBufferSequence,
-      ConstBufferIterator, CompletionCondition, WriteHandler>,
-    Allocator>
-{
-  typedef typename associated_allocator<WriteHandler, Allocator>::type type;
-
-  static type get(
-      const detail::write_op<AsyncWriteStream, ConstBufferSequence,
-        ConstBufferIterator, CompletionCondition, WriteHandler>& h,
-      const Allocator& a = Allocator()) ASIO_NOEXCEPT
-  {
-    return associated_allocator<WriteHandler, Allocator>::get(h.handler_, a);
-  }
-};
-
-template <typename AsyncWriteStream, typename ConstBufferSequence,
-    typename ConstBufferIterator, typename CompletionCondition,
-    typename WriteHandler, typename Executor>
-struct associated_executor<
-    detail::write_op<AsyncWriteStream, ConstBufferSequence,
-      ConstBufferIterator, CompletionCondition, WriteHandler>,
-    Executor>
-{
-  typedef typename associated_executor<WriteHandler, Executor>::type type;
-
-  static type get(
-      const detail::write_op<AsyncWriteStream, ConstBufferSequence,
-        ConstBufferIterator, CompletionCondition, WriteHandler>& h,
-      const Executor& ex = Executor()) ASIO_NOEXCEPT
-  {
-    return associated_executor<WriteHandler, Executor>::get(h.handler_, ex);
-  }
-};
-
-#endif // !defined(GENERATING_DOCUMENTATION)
-
-template <typename AsyncWriteStream, typename ConstBufferSequence,
-  typename CompletionCondition, typename WriteHandler>
-inline ASIO_INITFN_RESULT_TYPE(WriteHandler,
-    void (asio::error_code, std::size_t))
-async_write(AsyncWriteStream& s, const ConstBufferSequence& buffers,
-    CompletionCondition completion_condition,
-    ASIO_MOVE_ARG(WriteHandler) handler,
-    typename enable_if<
-      is_const_buffer_sequence<ConstBufferSequence>::value
-    >::type*)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a WriteHandler.
-  ASIO_WRITE_HANDLER_CHECK(WriteHandler, handler) type_check;
-
-  async_completion<WriteHandler,
-    void (asio::error_code, std::size_t)> init(handler);
-
-  detail::start_write_buffer_sequence_op(s, buffers,
-      asio::buffer_sequence_begin(buffers), completion_condition,
-      init.completion_handler);
-
-  return init.result.get();
-}
-
-template <typename AsyncWriteStream, typename ConstBufferSequence,
-    typename WriteHandler>
-inline ASIO_INITFN_RESULT_TYPE(WriteHandler,
-    void (asio::error_code, std::size_t))
-async_write(AsyncWriteStream& s, const ConstBufferSequence& buffers,
-    ASIO_MOVE_ARG(WriteHandler) handler,
-    typename enable_if<
-      is_const_buffer_sequence<ConstBufferSequence>::value
-    >::type*)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a WriteHandler.
-  ASIO_WRITE_HANDLER_CHECK(WriteHandler, handler) type_check;
-
-  async_completion<WriteHandler,
-    void (asio::error_code, std::size_t)> init(handler);
-
-  detail::start_write_buffer_sequence_op(s, buffers,
-      asio::buffer_sequence_begin(buffers), transfer_all(),
-      init.completion_handler);
-
-  return init.result.get();
-}
-
-namespace detail
-{
-  template <typename AsyncWriteStream, typename DynamicBuffer,
-      typename CompletionCondition, typename WriteHandler>
-  class write_dynbuf_op
-  {
-  public:
-    template <typename BufferSequence>
-    write_dynbuf_op(AsyncWriteStream& stream,
-        ASIO_MOVE_ARG(BufferSequence) buffers,
-        CompletionCondition completion_condition, WriteHandler& handler)
-      : stream_(stream),
-        buffers_(ASIO_MOVE_CAST(BufferSequence)(buffers)),
-        completion_condition_(
-          ASIO_MOVE_CAST(CompletionCondition)(completion_condition)),
-        handler_(ASIO_MOVE_CAST(WriteHandler)(handler))
-    {
-    }
-
-#if defined(ASIO_HAS_MOVE)
-    write_dynbuf_op(const write_dynbuf_op& other)
-      : stream_(other.stream_),
-        buffers_(other.buffers_),
-        completion_condition_(other.completion_condition_),
-        handler_(other.handler_)
-    {
-    }
-
-    write_dynbuf_op(write_dynbuf_op&& other)
-      : stream_(other.stream_),
-        buffers_(ASIO_MOVE_CAST(DynamicBuffer)(other.buffers_)),
-        completion_condition_(
-          ASIO_MOVE_CAST(CompletionCondition)(
-            other.completion_condition_)),
-        handler_(ASIO_MOVE_CAST(WriteHandler)(other.handler_))
-    {
-    }
-#endif // defined(ASIO_HAS_MOVE)
-
-    void operator()(const asio::error_code& ec,
-        std::size_t bytes_transferred, int start = 0)
-    {
-      switch (start)
-      {
-        case 1:
-        async_write(stream_, buffers_.data(), completion_condition_,
-            ASIO_MOVE_CAST(write_dynbuf_op)(*this));
-        return; default:
-        buffers_.consume(bytes_transferred);
-        handler_(ec, static_cast<const std::size_t&>(bytes_transferred));
-      }
-    }
-
-  //private:
-    AsyncWriteStream& stream_;
-    DynamicBuffer buffers_;
-    CompletionCondition completion_condition_;
-    WriteHandler handler_;
-  };
-
-  template <typename AsyncWriteStream, typename DynamicBuffer,
-      typename CompletionCondition, typename WriteHandler>
-  inline void* asio_handler_allocate(std::size_t size,
-      write_dynbuf_op<AsyncWriteStream, DynamicBuffer,
-        CompletionCondition, WriteHandler>* this_handler)
-  {
-    return asio_handler_alloc_helpers::allocate(
-        size, this_handler->handler_);
-  }
-
-  template <typename AsyncWriteStream, typename DynamicBuffer,
-      typename CompletionCondition, typename WriteHandler>
-  inline void asio_handler_deallocate(void* pointer, std::size_t size,
-      write_dynbuf_op<AsyncWriteStream, DynamicBuffer,
-        CompletionCondition, WriteHandler>* this_handler)
-  {
-    asio_handler_alloc_helpers::deallocate(
-        pointer, size, this_handler->handler_);
-  }
-
-  template <typename AsyncWriteStream, typename DynamicBuffer,
-      typename CompletionCondition, typename WriteHandler>
-  inline bool asio_handler_is_continuation(
-      write_dynbuf_op<AsyncWriteStream, DynamicBuffer,
-        CompletionCondition, WriteHandler>* this_handler)
-  {
-    return asio_handler_cont_helpers::is_continuation(
-        this_handler->handler_);
-  }
-
-  template <typename Function, typename AsyncWriteStream,
-      typename DynamicBuffer, typename CompletionCondition,
-      typename WriteHandler>
-  inline void asio_handler_invoke(Function& function,
-      write_dynbuf_op<AsyncWriteStream, DynamicBuffer,
-        CompletionCondition, WriteHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-
-  template <typename Function, typename AsyncWriteStream,
-      typename DynamicBuffer, typename CompletionCondition,
-      typename WriteHandler>
-  inline void asio_handler_invoke(const Function& function,
-      write_dynbuf_op<AsyncWriteStream, DynamicBuffer,
-        CompletionCondition, WriteHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-} // namespace detail
-
-#if !defined(GENERATING_DOCUMENTATION)
-
-template <typename AsyncWriteStream, typename DynamicBuffer,
-    typename CompletionCondition, typename WriteHandler, typename Allocator>
-struct associated_allocator<
-    detail::write_dynbuf_op<AsyncWriteStream,
-      DynamicBuffer, CompletionCondition, WriteHandler>,
-    Allocator>
-{
-  typedef typename associated_allocator<WriteHandler, Allocator>::type type;
-
-  static type get(
-      const detail::write_dynbuf_op<AsyncWriteStream,
-        DynamicBuffer, CompletionCondition, WriteHandler>& h,
-      const Allocator& a = Allocator()) ASIO_NOEXCEPT
-  {
-    return associated_allocator<WriteHandler, Allocator>::get(h.handler_, a);
-  }
-};
-
-template <typename AsyncWriteStream, typename DynamicBuffer,
-    typename CompletionCondition, typename WriteHandler, typename Executor>
-struct associated_executor<
-    detail::write_dynbuf_op<AsyncWriteStream,
-      DynamicBuffer, CompletionCondition, WriteHandler>,
-    Executor>
-{
-  typedef typename associated_executor<WriteHandler, Executor>::type type;
-
-  static type get(
-      const detail::write_dynbuf_op<AsyncWriteStream,
-        DynamicBuffer, CompletionCondition, WriteHandler>& h,
-      const Executor& ex = Executor()) ASIO_NOEXCEPT
-  {
-    return associated_executor<WriteHandler, Executor>::get(h.handler_, ex);
-  }
-};
-
-#endif // !defined(GENERATING_DOCUMENTATION)
-
-template <typename AsyncWriteStream,
-    typename DynamicBuffer, typename WriteHandler>
-inline ASIO_INITFN_RESULT_TYPE(WriteHandler,
-    void (asio::error_code, std::size_t))
-async_write(AsyncWriteStream& s,
-    ASIO_MOVE_ARG(DynamicBuffer) buffers,
-    ASIO_MOVE_ARG(WriteHandler) handler,
-    typename enable_if<
-      is_dynamic_buffer<typename decay<DynamicBuffer>::type>::value
-    >::type*)
-{
-  return async_write(s,
-      ASIO_MOVE_CAST(DynamicBuffer)(buffers),
-      transfer_all(), ASIO_MOVE_CAST(WriteHandler)(handler));
-}
-
-template <typename AsyncWriteStream, typename DynamicBuffer,
-    typename CompletionCondition, typename WriteHandler>
-inline ASIO_INITFN_RESULT_TYPE(WriteHandler,
-    void (asio::error_code, std::size_t))
-async_write(AsyncWriteStream& s,
-    ASIO_MOVE_ARG(DynamicBuffer) buffers,
-    CompletionCondition completion_condition,
-    ASIO_MOVE_ARG(WriteHandler) handler,
-    typename enable_if<
-      is_dynamic_buffer<typename decay<DynamicBuffer>::type>::value
-    >::type*)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a WriteHandler.
-  ASIO_WRITE_HANDLER_CHECK(WriteHandler, handler) type_check;
-
-  async_completion<WriteHandler,
-    void (asio::error_code, std::size_t)> init(handler);
-
-  detail::write_dynbuf_op<AsyncWriteStream,
-    typename decay<DynamicBuffer>::type,
-      CompletionCondition, ASIO_HANDLER_TYPE(
-        WriteHandler, void (asio::error_code, std::size_t))>(
-          s, ASIO_MOVE_CAST(DynamicBuffer)(buffers),
-            completion_condition, init.completion_handler)(
-              asio::error_code(), 0, 1);
-
-  return init.result.get();
-}
-
-#if !defined(ASIO_NO_EXTENSIONS)
-#if !defined(ASIO_NO_IOSTREAM)
-
-template <typename AsyncWriteStream, typename Allocator, typename WriteHandler>
-inline ASIO_INITFN_RESULT_TYPE(WriteHandler,
-    void (asio::error_code, std::size_t))
-async_write(AsyncWriteStream& s,
-    asio::basic_streambuf<Allocator>& b,
-    ASIO_MOVE_ARG(WriteHandler) handler)
-{
-  return async_write(s, basic_streambuf_ref<Allocator>(b),
-      ASIO_MOVE_CAST(WriteHandler)(handler));
-}
-
-template <typename AsyncWriteStream, typename Allocator,
-    typename CompletionCondition, typename WriteHandler>
-inline ASIO_INITFN_RESULT_TYPE(WriteHandler,
-    void (asio::error_code, std::size_t))
-async_write(AsyncWriteStream& s,
-    asio::basic_streambuf<Allocator>& b,
-    CompletionCondition completion_condition,
-    ASIO_MOVE_ARG(WriteHandler) handler)
-{
-  return async_write(s, basic_streambuf_ref<Allocator>(b),
-      completion_condition, ASIO_MOVE_CAST(WriteHandler)(handler));
-}
-
-#endif // !defined(ASIO_NO_IOSTREAM)
-#endif // !defined(ASIO_NO_EXTENSIONS)
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_IMPL_WRITE_HPP
diff --git a/lib/asio/impl/write_at.hpp b/lib/asio/impl/write_at.hpp
deleted file mode 100644
index cc6f336..0000000
--- a/lib/asio/impl/write_at.hpp
+++ /dev/null
@@ -1,572 +0,0 @@
-//
-// impl/write_at.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_IMPL_WRITE_AT_HPP
-#define ASIO_IMPL_WRITE_AT_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/associated_allocator.hpp"
-#include "asio/associated_executor.hpp"
-#include "asio/buffer.hpp"
-#include "asio/completion_condition.hpp"
-#include "asio/detail/array_fwd.hpp"
-#include "asio/detail/base_from_completion_cond.hpp"
-#include "asio/detail/bind_handler.hpp"
-#include "asio/detail/consuming_buffers.hpp"
-#include "asio/detail/dependent_type.hpp"
-#include "asio/detail/handler_alloc_helpers.hpp"
-#include "asio/detail/handler_cont_helpers.hpp"
-#include "asio/detail/handler_invoke_helpers.hpp"
-#include "asio/detail/handler_type_requirements.hpp"
-#include "asio/detail/throw_error.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-
-namespace detail
-{
-  template <typename SyncRandomAccessWriteDevice, typename ConstBufferSequence,
-      typename ConstBufferIterator, typename CompletionCondition>
-  std::size_t write_at_buffer_sequence(SyncRandomAccessWriteDevice& d,
-      uint64_t offset, const ConstBufferSequence& buffers,
-      const ConstBufferIterator&, CompletionCondition completion_condition,
-      asio::error_code& ec)
-  {
-    ec = asio::error_code();
-    asio::detail::consuming_buffers<const_buffer,
-        ConstBufferSequence, ConstBufferIterator> tmp(buffers);
-    while (!tmp.empty())
-    {
-      if (std::size_t max_size = detail::adapt_completion_condition_result(
-            completion_condition(ec, tmp.total_consumed())))
-      {
-        tmp.consume(d.write_some_at(offset + tmp.total_consumed(),
-              tmp.prepare(max_size), ec));
-      }
-      else
-        break;
-    }
-    return tmp.total_consumed();;
-  }
-} // namespace detail
-
-template <typename SyncRandomAccessWriteDevice, typename ConstBufferSequence,
-    typename CompletionCondition>
-std::size_t write_at(SyncRandomAccessWriteDevice& d,
-    uint64_t offset, const ConstBufferSequence& buffers,
-    CompletionCondition completion_condition, asio::error_code& ec)
-{
-  return detail::write_at_buffer_sequence(d, offset, buffers,
-      asio::buffer_sequence_begin(buffers), completion_condition, ec);
-}
-
-template <typename SyncRandomAccessWriteDevice, typename ConstBufferSequence>
-inline std::size_t write_at(SyncRandomAccessWriteDevice& d,
-    uint64_t offset, const ConstBufferSequence& buffers)
-{
-  asio::error_code ec;
-  std::size_t bytes_transferred = write_at(
-      d, offset, buffers, transfer_all(), ec);
-  asio::detail::throw_error(ec, "write_at");
-  return bytes_transferred;
-}
-
-template <typename SyncRandomAccessWriteDevice, typename ConstBufferSequence>
-inline std::size_t write_at(SyncRandomAccessWriteDevice& d,
-    uint64_t offset, const ConstBufferSequence& buffers,
-    asio::error_code& ec)
-{
-  return write_at(d, offset, buffers, transfer_all(), ec);
-}
-
-template <typename SyncRandomAccessWriteDevice, typename ConstBufferSequence,
-    typename CompletionCondition>
-inline std::size_t write_at(SyncRandomAccessWriteDevice& d,
-    uint64_t offset, const ConstBufferSequence& buffers,
-    CompletionCondition completion_condition)
-{
-  asio::error_code ec;
-  std::size_t bytes_transferred = write_at(
-      d, offset, buffers, completion_condition, ec);
-  asio::detail::throw_error(ec, "write_at");
-  return bytes_transferred;
-}
-
-#if !defined(ASIO_NO_EXTENSIONS)
-#if !defined(ASIO_NO_IOSTREAM)
-
-template <typename SyncRandomAccessWriteDevice, typename Allocator,
-    typename CompletionCondition>
-std::size_t write_at(SyncRandomAccessWriteDevice& d,
-    uint64_t offset, asio::basic_streambuf<Allocator>& b,
-    CompletionCondition completion_condition, asio::error_code& ec)
-{
-  std::size_t bytes_transferred = write_at(
-      d, offset, b.data(), completion_condition, ec);
-  b.consume(bytes_transferred);
-  return bytes_transferred;
-}
-
-template <typename SyncRandomAccessWriteDevice, typename Allocator>
-inline std::size_t write_at(SyncRandomAccessWriteDevice& d,
-    uint64_t offset, asio::basic_streambuf<Allocator>& b)
-{
-  asio::error_code ec;
-  std::size_t bytes_transferred = write_at(d, offset, b, transfer_all(), ec);
-  asio::detail::throw_error(ec, "write_at");
-  return bytes_transferred;
-}
-
-template <typename SyncRandomAccessWriteDevice, typename Allocator>
-inline std::size_t write_at(SyncRandomAccessWriteDevice& d,
-    uint64_t offset, asio::basic_streambuf<Allocator>& b,
-    asio::error_code& ec)
-{
-  return write_at(d, offset, b, transfer_all(), ec);
-}
-
-template <typename SyncRandomAccessWriteDevice, typename Allocator,
-    typename CompletionCondition>
-inline std::size_t write_at(SyncRandomAccessWriteDevice& d,
-    uint64_t offset, asio::basic_streambuf<Allocator>& b,
-    CompletionCondition completion_condition)
-{
-  asio::error_code ec;
-  std::size_t bytes_transferred = write_at(
-      d, offset, b, completion_condition, ec);
-  asio::detail::throw_error(ec, "write_at");
-  return bytes_transferred;
-}
-
-#endif // !defined(ASIO_NO_IOSTREAM)
-#endif // !defined(ASIO_NO_EXTENSIONS)
-
-namespace detail
-{
-  template <typename AsyncRandomAccessWriteDevice,
-      typename ConstBufferSequence, typename ConstBufferIterator,
-      typename CompletionCondition, typename WriteHandler>
-  class write_at_op
-    : detail::base_from_completion_cond<CompletionCondition>
-  {
-  public:
-    write_at_op(AsyncRandomAccessWriteDevice& device,
-        uint64_t offset, const ConstBufferSequence& buffers,
-        CompletionCondition completion_condition, WriteHandler& handler)
-      : detail::base_from_completion_cond<
-          CompletionCondition>(completion_condition),
-        device_(device),
-        offset_(offset),
-        buffers_(buffers),
-        start_(0),
-        handler_(ASIO_MOVE_CAST(WriteHandler)(handler))
-    {
-    }
-
-#if defined(ASIO_HAS_MOVE)
-    write_at_op(const write_at_op& other)
-      : detail::base_from_completion_cond<CompletionCondition>(other),
-        device_(other.device_),
-        offset_(other.offset_),
-        buffers_(other.buffers_),
-        start_(other.start_),
-        handler_(other.handler_)
-    {
-    }
-
-    write_at_op(write_at_op&& other)
-      : detail::base_from_completion_cond<CompletionCondition>(other),
-        device_(other.device_),
-        offset_(other.offset_),
-        buffers_(other.buffers_),
-        start_(other.start_),
-        handler_(ASIO_MOVE_CAST(WriteHandler)(other.handler_))
-    {
-    }
-#endif // defined(ASIO_HAS_MOVE)
-
-    void operator()(const asio::error_code& ec,
-        std::size_t bytes_transferred, int start = 0)
-    {
-      std::size_t max_size;
-      switch (start_ = start)
-      {
-        case 1:
-        max_size = this->check_for_completion(ec, buffers_.total_consumed());
-        do
-        {
-          device_.async_write_some_at(
-              offset_ + buffers_.total_consumed(), buffers_.prepare(max_size),
-              ASIO_MOVE_CAST(write_at_op)(*this));
-          return; default:
-          buffers_.consume(bytes_transferred);
-          if ((!ec && bytes_transferred == 0) || buffers_.empty())
-            break;
-          max_size = this->check_for_completion(ec, buffers_.total_consumed());
-        } while (max_size > 0);
-
-        handler_(ec, buffers_.total_consumed());
-      }
-    }
-
-  //private:
-    AsyncRandomAccessWriteDevice& device_;
-    uint64_t offset_;
-    asio::detail::consuming_buffers<const_buffer,
-        ConstBufferSequence, ConstBufferIterator> buffers_;
-    int start_;
-    WriteHandler handler_;
-  };
-
-  template <typename AsyncRandomAccessWriteDevice,
-      typename ConstBufferSequence, typename ConstBufferIterator,
-      typename CompletionCondition, typename WriteHandler>
-  inline void* asio_handler_allocate(std::size_t size,
-      write_at_op<AsyncRandomAccessWriteDevice, ConstBufferSequence,
-        ConstBufferIterator, CompletionCondition, WriteHandler>* this_handler)
-  {
-    return asio_handler_alloc_helpers::allocate(
-        size, this_handler->handler_);
-  }
-
-  template <typename AsyncRandomAccessWriteDevice,
-      typename ConstBufferSequence, typename ConstBufferIterator,
-      typename CompletionCondition, typename WriteHandler>
-  inline void asio_handler_deallocate(void* pointer, std::size_t size,
-      write_at_op<AsyncRandomAccessWriteDevice, ConstBufferSequence,
-        ConstBufferIterator, CompletionCondition, WriteHandler>* this_handler)
-  {
-    asio_handler_alloc_helpers::deallocate(
-        pointer, size, this_handler->handler_);
-  }
-
-  template <typename AsyncRandomAccessWriteDevice,
-      typename ConstBufferSequence, typename ConstBufferIterator,
-      typename CompletionCondition, typename WriteHandler>
-  inline bool asio_handler_is_continuation(
-      write_at_op<AsyncRandomAccessWriteDevice, ConstBufferSequence,
-        ConstBufferIterator, CompletionCondition, WriteHandler>* this_handler)
-  {
-    return this_handler->start_ == 0 ? true
-      : asio_handler_cont_helpers::is_continuation(
-          this_handler->handler_);
-  }
-
-  template <typename Function, typename AsyncRandomAccessWriteDevice,
-      typename ConstBufferSequence, typename ConstBufferIterator,
-      typename CompletionCondition, typename WriteHandler>
-  inline void asio_handler_invoke(Function& function,
-      write_at_op<AsyncRandomAccessWriteDevice, ConstBufferSequence,
-        ConstBufferIterator, CompletionCondition, WriteHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-
-  template <typename Function, typename AsyncRandomAccessWriteDevice,
-      typename ConstBufferSequence, typename ConstBufferIterator,
-      typename CompletionCondition, typename WriteHandler>
-  inline void asio_handler_invoke(const Function& function,
-      write_at_op<AsyncRandomAccessWriteDevice, ConstBufferSequence,
-        ConstBufferIterator, CompletionCondition, WriteHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-
-  template <typename AsyncRandomAccessWriteDevice,
-      typename ConstBufferSequence, typename ConstBufferIterator,
-      typename CompletionCondition, typename WriteHandler>
-  inline void start_write_at_buffer_sequence_op(AsyncRandomAccessWriteDevice& d,
-      uint64_t offset, const ConstBufferSequence& buffers,
-      const ConstBufferIterator&, CompletionCondition completion_condition,
-      WriteHandler& handler)
-  {
-    detail::write_at_op<AsyncRandomAccessWriteDevice, ConstBufferSequence,
-      ConstBufferIterator, CompletionCondition, WriteHandler>(
-        d, offset, buffers, completion_condition, handler)(
-          asio::error_code(), 0, 1);
-  }
-} // namespace detail
-
-#if !defined(GENERATING_DOCUMENTATION)
-
-template <typename AsyncRandomAccessWriteDevice,
-    typename ConstBufferSequence, typename ConstBufferIterator,
-    typename CompletionCondition, typename WriteHandler, typename Allocator>
-struct associated_allocator<
-    detail::write_at_op<AsyncRandomAccessWriteDevice, ConstBufferSequence,
-      ConstBufferIterator, CompletionCondition, WriteHandler>,
-    Allocator>
-{
-  typedef typename associated_allocator<WriteHandler, Allocator>::type type;
-
-  static type get(
-      const detail::write_at_op<AsyncRandomAccessWriteDevice,
-        ConstBufferSequence, ConstBufferIterator,
-        CompletionCondition, WriteHandler>& h,
-      const Allocator& a = Allocator()) ASIO_NOEXCEPT
-  {
-    return associated_allocator<WriteHandler, Allocator>::get(h.handler_, a);
-  }
-};
-
-template <typename AsyncRandomAccessWriteDevice,
-    typename ConstBufferSequence, typename ConstBufferIterator,
-    typename CompletionCondition, typename WriteHandler, typename Executor>
-struct associated_executor<
-    detail::write_at_op<AsyncRandomAccessWriteDevice, ConstBufferSequence,
-      ConstBufferIterator, CompletionCondition, WriteHandler>,
-    Executor>
-{
-  typedef typename associated_executor<WriteHandler, Executor>::type type;
-
-  static type get(
-      const detail::write_at_op<AsyncRandomAccessWriteDevice,
-        ConstBufferSequence, ConstBufferIterator,
-        CompletionCondition, WriteHandler>& h,
-      const Executor& ex = Executor()) ASIO_NOEXCEPT
-  {
-    return associated_executor<WriteHandler, Executor>::get(h.handler_, ex);
-  }
-};
-
-#endif // !defined(GENERATING_DOCUMENTATION)
-
-template <typename AsyncRandomAccessWriteDevice, typename ConstBufferSequence,
-    typename CompletionCondition, typename WriteHandler>
-inline ASIO_INITFN_RESULT_TYPE(WriteHandler,
-    void (asio::error_code, std::size_t))
-async_write_at(AsyncRandomAccessWriteDevice& d,
-    uint64_t offset, const ConstBufferSequence& buffers,
-    CompletionCondition completion_condition,
-    ASIO_MOVE_ARG(WriteHandler) handler)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a WriteHandler.
-  ASIO_WRITE_HANDLER_CHECK(WriteHandler, handler) type_check;
-
-  async_completion<WriteHandler,
-    void (asio::error_code, std::size_t)> init(handler);
-
-  detail::start_write_at_buffer_sequence_op(d, offset, buffers,
-      asio::buffer_sequence_begin(buffers), completion_condition,
-      init.completion_handler);
-
-  return init.result.get();
-}
-
-template <typename AsyncRandomAccessWriteDevice, typename ConstBufferSequence,
-    typename WriteHandler>
-inline ASIO_INITFN_RESULT_TYPE(WriteHandler,
-    void (asio::error_code, std::size_t))
-async_write_at(AsyncRandomAccessWriteDevice& d,
-    uint64_t offset, const ConstBufferSequence& buffers,
-    ASIO_MOVE_ARG(WriteHandler) handler)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a WriteHandler.
-  ASIO_WRITE_HANDLER_CHECK(WriteHandler, handler) type_check;
-
-  async_completion<WriteHandler,
-    void (asio::error_code, std::size_t)> init(handler);
-
-  detail::start_write_at_buffer_sequence_op(d, offset, buffers,
-      asio::buffer_sequence_begin(buffers), transfer_all(),
-      init.completion_handler);
-
-  return init.result.get();
-}
-
-#if !defined(ASIO_NO_EXTENSIONS)
-#if !defined(ASIO_NO_IOSTREAM)
-
-namespace detail
-{
-  template <typename Allocator, typename WriteHandler>
-  class write_at_streambuf_op
-  {
-  public:
-    write_at_streambuf_op(
-        asio::basic_streambuf<Allocator>& streambuf,
-        WriteHandler& handler)
-      : streambuf_(streambuf),
-        handler_(ASIO_MOVE_CAST(WriteHandler)(handler))
-    {
-    }
-
-#if defined(ASIO_HAS_MOVE)
-    write_at_streambuf_op(const write_at_streambuf_op& other)
-      : streambuf_(other.streambuf_),
-        handler_(other.handler_)
-    {
-    }
-
-    write_at_streambuf_op(write_at_streambuf_op&& other)
-      : streambuf_(other.streambuf_),
-        handler_(ASIO_MOVE_CAST(WriteHandler)(other.handler_))
-    {
-    }
-#endif // defined(ASIO_HAS_MOVE)
-
-    void operator()(const asio::error_code& ec,
-        const std::size_t bytes_transferred)
-    {
-      streambuf_.consume(bytes_transferred);
-      handler_(ec, bytes_transferred);
-    }
-
-  //private:
-    asio::basic_streambuf<Allocator>& streambuf_;
-    WriteHandler handler_;
-  };
-
-  template <typename Allocator, typename WriteHandler>
-  inline void* asio_handler_allocate(std::size_t size,
-      write_at_streambuf_op<Allocator, WriteHandler>* this_handler)
-  {
-    return asio_handler_alloc_helpers::allocate(
-        size, this_handler->handler_);
-  }
-
-  template <typename Allocator, typename WriteHandler>
-  inline void asio_handler_deallocate(void* pointer, std::size_t size,
-      write_at_streambuf_op<Allocator, WriteHandler>* this_handler)
-  {
-    asio_handler_alloc_helpers::deallocate(
-        pointer, size, this_handler->handler_);
-  }
-
-  template <typename Allocator, typename WriteHandler>
-  inline bool asio_handler_is_continuation(
-      write_at_streambuf_op<Allocator, WriteHandler>* this_handler)
-  {
-    return asio_handler_cont_helpers::is_continuation(
-        this_handler->handler_);
-  }
-
-  template <typename Function, typename Allocator, typename WriteHandler>
-  inline void asio_handler_invoke(Function& function,
-      write_at_streambuf_op<Allocator, WriteHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-
-  template <typename Function, typename Allocator, typename WriteHandler>
-  inline void asio_handler_invoke(const Function& function,
-      write_at_streambuf_op<Allocator, WriteHandler>* this_handler)
-  {
-    asio_handler_invoke_helpers::invoke(
-        function, this_handler->handler_);
-  }
-
-  template <typename Allocator, typename WriteHandler>
-  inline write_at_streambuf_op<Allocator, WriteHandler>
-  make_write_at_streambuf_op(
-      asio::basic_streambuf<Allocator>& b, WriteHandler handler)
-  {
-    return write_at_streambuf_op<Allocator, WriteHandler>(b, handler);
-  }
-} // namespace detail
-
-#if !defined(GENERATING_DOCUMENTATION)
-
-template <typename Allocator, typename WriteHandler, typename Allocator1>
-struct associated_allocator<
-    detail::write_at_streambuf_op<Allocator, WriteHandler>,
-    Allocator1>
-{
-  typedef typename associated_allocator<WriteHandler, Allocator1>::type type;
-
-  static type get(
-      const detail::write_at_streambuf_op<Allocator, WriteHandler>& h,
-      const Allocator1& a = Allocator1()) ASIO_NOEXCEPT
-  {
-    return associated_allocator<WriteHandler, Allocator1>::get(h.handler_, a);
-  }
-};
-
-template <typename Executor, typename WriteHandler, typename Executor1>
-struct associated_executor<
-    detail::write_at_streambuf_op<Executor, WriteHandler>,
-    Executor1>
-{
-  typedef typename associated_executor<WriteHandler, Executor1>::type type;
-
-  static type get(
-      const detail::write_at_streambuf_op<Executor, WriteHandler>& h,
-      const Executor1& ex = Executor1()) ASIO_NOEXCEPT
-  {
-    return associated_executor<WriteHandler, Executor1>::get(h.handler_, ex);
-  }
-};
-
-#endif // !defined(GENERATING_DOCUMENTATION)
-
-template <typename AsyncRandomAccessWriteDevice, typename Allocator,
-    typename CompletionCondition, typename WriteHandler>
-inline ASIO_INITFN_RESULT_TYPE(WriteHandler,
-    void (asio::error_code, std::size_t))
-async_write_at(AsyncRandomAccessWriteDevice& d,
-    uint64_t offset, asio::basic_streambuf<Allocator>& b,
-    CompletionCondition completion_condition,
-    ASIO_MOVE_ARG(WriteHandler) handler)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a WriteHandler.
-  ASIO_WRITE_HANDLER_CHECK(WriteHandler, handler) type_check;
-
-  async_completion<WriteHandler,
-    void (asio::error_code, std::size_t)> init(handler);
-
-  async_write_at(d, offset, b.data(), completion_condition,
-    detail::write_at_streambuf_op<Allocator, ASIO_HANDLER_TYPE(
-      WriteHandler, void (asio::error_code, std::size_t))>(
-        b, init.completion_handler));
-
-  return init.result.get();
-}
-
-template <typename AsyncRandomAccessWriteDevice, typename Allocator,
-    typename WriteHandler>
-inline ASIO_INITFN_RESULT_TYPE(WriteHandler,
-    void (asio::error_code, std::size_t))
-async_write_at(AsyncRandomAccessWriteDevice& d,
-    uint64_t offset, asio::basic_streambuf<Allocator>& b,
-    ASIO_MOVE_ARG(WriteHandler) handler)
-{
-  // If you get an error on the following line it means that your handler does
-  // not meet the documented type requirements for a WriteHandler.
-  ASIO_WRITE_HANDLER_CHECK(WriteHandler, handler) type_check;
-
-  async_completion<WriteHandler,
-    void (asio::error_code, std::size_t)> init(handler);
-
-  async_write_at(d, offset, b.data(), transfer_all(),
-    detail::write_at_streambuf_op<Allocator, ASIO_HANDLER_TYPE(
-      WriteHandler, void (asio::error_code, std::size_t))>(
-        b, init.completion_handler));
-
-  return init.result.get();
-}
-
-#endif // !defined(ASIO_NO_IOSTREAM)
-#endif // !defined(ASIO_NO_EXTENSIONS)
-
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_IMPL_WRITE_AT_HPP