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diff --git a/lib/asio/ssl/stream.hpp b/lib/asio/ssl/stream.hpp
deleted file mode 100644
index 2b221ed..0000000
--- a/lib/asio/ssl/stream.hpp
+++ /dev/null
@@ -1,761 +0,0 @@
-//
-// ssl/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_SSL_STREAM_HPP
-#define ASIO_SSL_STREAM_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#include "asio/async_result.hpp"
-#include "asio/detail/buffer_sequence_adapter.hpp"
-#include "asio/detail/handler_type_requirements.hpp"
-#include "asio/detail/noncopyable.hpp"
-#include "asio/detail/type_traits.hpp"
-#include "asio/ssl/context.hpp"
-#include "asio/ssl/detail/buffered_handshake_op.hpp"
-#include "asio/ssl/detail/handshake_op.hpp"
-#include "asio/ssl/detail/io.hpp"
-#include "asio/ssl/detail/read_op.hpp"
-#include "asio/ssl/detail/shutdown_op.hpp"
-#include "asio/ssl/detail/stream_core.hpp"
-#include "asio/ssl/detail/write_op.hpp"
-#include "asio/ssl/stream_base.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace ssl {
-
-/// Provides stream-oriented functionality using SSL.
-/**
- * The stream class template provides asynchronous and blocking stream-oriented
- * functionality using SSL.
- *
- * @par Thread Safety
- * @e Distinct @e objects: Safe.@n
- * @e Shared @e objects: Unsafe. The application must also ensure that all
- * asynchronous operations are performed within the same implicit or explicit
- * strand.
- *
- * @par Example
- * To use the SSL stream template with an ip::tcp::socket, you would write:
- * @code
- * asio::io_context io_context;
- * asio::ssl::context ctx(asio::ssl::context::sslv23);
- * asio::ssl::stream<asio:ip::tcp::socket> sock(io_context, ctx);
- * @endcode
- *
- * @par Concepts:
- * AsyncReadStream, AsyncWriteStream, Stream, SyncReadStream, SyncWriteStream.
- */
-template <typename Stream>
-class stream :
-  public stream_base,
-  private noncopyable
-{
-public:
-  /// The native handle type of the SSL stream.
-  typedef SSL* native_handle_type;
-
-  /// Structure for use with deprecated impl_type.
-  struct impl_struct
-  {
-    SSL* ssl;
-  };
-
-  /// The type of the next layer.
-  typedef typename remove_reference<Stream>::type next_layer_type;
-
-  /// The type of the lowest layer.
-  typedef typename next_layer_type::lowest_layer_type lowest_layer_type;
-
-  /// The type of the executor associated with the object.
-  typedef typename lowest_layer_type::executor_type executor_type;
-
-#if defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
-  /// Construct a stream.
-  /**
-   * This constructor creates a stream and initialises the underlying stream
-   * object.
-   *
-   * @param arg The argument to be passed to initialise the underlying stream.
-   *
-   * @param ctx The SSL context to be used for the stream.
-   */
-  template <typename Arg>
-  stream(Arg&& arg, context& ctx)
-    : next_layer_(ASIO_MOVE_CAST(Arg)(arg)),
-      core_(ctx.native_handle(),
-          next_layer_.lowest_layer().get_executor().context())
-  {
-  }
-#else // defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
-  template <typename Arg>
-  stream(Arg& arg, context& ctx)
-    : next_layer_(arg),
-      core_(ctx.native_handle(),
-          next_layer_.lowest_layer().get_executor().context())
-  {
-  }
-#endif // defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
-
-  /// Destructor.
-  /**
-   * @note A @c stream object must not be destroyed while there are pending
-   * asynchronous operations associated with it.
-   */
-  ~stream()
-  {
-  }
-
-  /// Get the executor associated with the object.
-  /**
-   * This function may be used to obtain the executor object that the stream
-   * uses to dispatch handlers for asynchronous operations.
-   *
-   * @return A copy of the executor that stream will use to dispatch handlers.
-   */
-  executor_type get_executor() ASIO_NOEXCEPT
-  {
-    return next_layer_.lowest_layer().get_executor();
-  }
-
-#if !defined(ASIO_NO_DEPRECATED)
-  /// (Deprecated: Use get_executor().) Get the io_context associated with the
-  /// object.
-  asio::io_context& get_io_context()
-  {
-    return next_layer_.lowest_layer().get_io_context();
-  }
-
-  /// (Deprecated: Use get_executor().) Get the io_context associated with the
-  /// object.
-  asio::io_context& get_io_service()
-  {
-    return next_layer_.lowest_layer().get_io_service();
-  }
-#endif // !defined(ASIO_NO_DEPRECATED)
-
-  /// Get the underlying implementation in the native type.
-  /**
-   * This function may be used to obtain the underlying implementation of the
-   * context. This is intended to allow access to context functionality that is
-   * not otherwise provided.
-   *
-   * @par Example
-   * The native_handle() function returns a pointer of type @c SSL* that is
-   * suitable for passing to functions such as @c SSL_get_verify_result and
-   * @c SSL_get_peer_certificate:
-   * @code
-   * asio::ssl::stream<asio:ip::tcp::socket> sock(io_context, ctx);
-   *
-   * // ... establish connection and perform handshake ...
-   *
-   * if (X509* cert = SSL_get_peer_certificate(sock.native_handle()))
-   * {
-   *   if (SSL_get_verify_result(sock.native_handle()) == X509_V_OK)
-   *   {
-   *     // ...
-   *   }
-   * }
-   * @endcode
-   */
-  native_handle_type native_handle()
-  {
-    return core_.engine_.native_handle();
-  }
-
-  /// Get a reference to the next layer.
-  /**
-   * This function returns a reference to the next layer in a stack of stream
-   * layers.
-   *
-   * @return A reference to the next layer in the stack of stream layers.
-   * Ownership is not transferred to the caller.
-   */
-  const next_layer_type& next_layer() const
-  {
-    return next_layer_;
-  }
-
-  /// Get a reference to the next layer.
-  /**
-   * This function returns a reference to the next layer in a stack of stream
-   * layers.
-   *
-   * @return A reference to the next layer in the stack of stream layers.
-   * Ownership is not transferred to the caller.
-   */
-  next_layer_type& next_layer()
-  {
-    return next_layer_;
-  }
-
-  /// Get a reference to the lowest layer.
-  /**
-   * This function returns a reference to the lowest layer in a stack of
-   * stream layers.
-   *
-   * @return A reference to the lowest layer in the stack of stream layers.
-   * Ownership is not transferred to the caller.
-   */
-  lowest_layer_type& lowest_layer()
-  {
-    return next_layer_.lowest_layer();
-  }
-
-  /// Get a reference to the lowest layer.
-  /**
-   * This function returns a reference to the lowest layer in a stack of
-   * stream layers.
-   *
-   * @return A reference to the lowest layer in the stack of stream layers.
-   * Ownership is not transferred to the caller.
-   */
-  const lowest_layer_type& lowest_layer() const
-  {
-    return next_layer_.lowest_layer();
-  }
-
-  /// Set the peer verification mode.
-  /**
-   * This function may be used to configure the peer verification mode used by
-   * the stream. The new mode will override the mode inherited from the context.
-   *
-   * @param v A bitmask of peer verification modes. See @ref verify_mode for
-   * available values.
-   *
-   * @throws asio::system_error Thrown on failure.
-   *
-   * @note Calls @c SSL_set_verify.
-   */
-  void set_verify_mode(verify_mode v)
-  {
-    asio::error_code ec;
-    set_verify_mode(v, ec);
-    asio::detail::throw_error(ec, "set_verify_mode");
-  }
-
-  /// Set the peer verification mode.
-  /**
-   * This function may be used to configure the peer verification mode used by
-   * the stream. The new mode will override the mode inherited from the context.
-   *
-   * @param v A bitmask of peer verification modes. See @ref verify_mode for
-   * available values.
-   *
-   * @param ec Set to indicate what error occurred, if any.
-   *
-   * @note Calls @c SSL_set_verify.
-   */
-  ASIO_SYNC_OP_VOID set_verify_mode(
-      verify_mode v, asio::error_code& ec)
-  {
-    core_.engine_.set_verify_mode(v, ec);
-    ASIO_SYNC_OP_VOID_RETURN(ec);
-  }
-
-  /// Set the peer verification depth.
-  /**
-   * This function may be used to configure the maximum verification depth
-   * allowed by the stream.
-   *
-   * @param depth Maximum depth for the certificate chain verification that
-   * shall be allowed.
-   *
-   * @throws asio::system_error Thrown on failure.
-   *
-   * @note Calls @c SSL_set_verify_depth.
-   */
-  void set_verify_depth(int depth)
-  {
-    asio::error_code ec;
-    set_verify_depth(depth, ec);
-    asio::detail::throw_error(ec, "set_verify_depth");
-  }
-
-  /// Set the peer verification depth.
-  /**
-   * This function may be used to configure the maximum verification depth
-   * allowed by the stream.
-   *
-   * @param depth Maximum depth for the certificate chain verification that
-   * shall be allowed.
-   *
-   * @param ec Set to indicate what error occurred, if any.
-   *
-   * @note Calls @c SSL_set_verify_depth.
-   */
-  ASIO_SYNC_OP_VOID set_verify_depth(
-      int depth, asio::error_code& ec)
-  {
-    core_.engine_.set_verify_depth(depth, ec);
-    ASIO_SYNC_OP_VOID_RETURN(ec);
-  }
-
-  /// Set the callback used to verify peer certificates.
-  /**
-   * This function is used to specify a callback function that will be called
-   * by the implementation when it needs to verify a peer certificate.
-   *
-   * @param callback The function object to be used for verifying a certificate.
-   * The function signature of the handler must be:
-   * @code bool verify_callback(
-   *   bool preverified, // True if the certificate passed pre-verification.
-   *   verify_context& ctx // The peer certificate and other context.
-   * ); @endcode
-   * The return value of the callback is true if the certificate has passed
-   * verification, false otherwise.
-   *
-   * @throws asio::system_error Thrown on failure.
-   *
-   * @note Calls @c SSL_set_verify.
-   */
-  template <typename VerifyCallback>
-  void set_verify_callback(VerifyCallback callback)
-  {
-    asio::error_code ec;
-    this->set_verify_callback(callback, ec);
-    asio::detail::throw_error(ec, "set_verify_callback");
-  }
-
-  /// Set the callback used to verify peer certificates.
-  /**
-   * This function is used to specify a callback function that will be called
-   * by the implementation when it needs to verify a peer certificate.
-   *
-   * @param callback The function object to be used for verifying a certificate.
-   * The function signature of the handler must be:
-   * @code bool verify_callback(
-   *   bool preverified, // True if the certificate passed pre-verification.
-   *   verify_context& ctx // The peer certificate and other context.
-   * ); @endcode
-   * The return value of the callback is true if the certificate has passed
-   * verification, false otherwise.
-   *
-   * @param ec Set to indicate what error occurred, if any.
-   *
-   * @note Calls @c SSL_set_verify.
-   */
-  template <typename VerifyCallback>
-  ASIO_SYNC_OP_VOID set_verify_callback(VerifyCallback callback,
-      asio::error_code& ec)
-  {
-    core_.engine_.set_verify_callback(
-        new detail::verify_callback<VerifyCallback>(callback), ec);
-    ASIO_SYNC_OP_VOID_RETURN(ec);
-  }
-
-  /// Perform SSL handshaking.
-  /**
-   * This function is used to perform SSL handshaking on the stream. The
-   * function call will block until handshaking is complete or an error occurs.
-   *
-   * @param type The type of handshaking to be performed, i.e. as a client or as
-   * a server.
-   *
-   * @throws asio::system_error Thrown on failure.
-   */
-  void handshake(handshake_type type)
-  {
-    asio::error_code ec;
-    handshake(type, ec);
-    asio::detail::throw_error(ec, "handshake");
-  }
-
-  /// Perform SSL handshaking.
-  /**
-   * This function is used to perform SSL handshaking on the stream. The
-   * function call will block until handshaking is complete or an error occurs.
-   *
-   * @param type The type of handshaking to be performed, i.e. as a client or as
-   * a server.
-   *
-   * @param ec Set to indicate what error occurred, if any.
-   */
-  ASIO_SYNC_OP_VOID handshake(handshake_type type,
-      asio::error_code& ec)
-  {
-    detail::io(next_layer_, core_, detail::handshake_op(type), ec);
-    ASIO_SYNC_OP_VOID_RETURN(ec);
-  }
-
-  /// Perform SSL handshaking.
-  /**
-   * This function is used to perform SSL handshaking on the stream. The
-   * function call will block until handshaking is complete or an error occurs.
-   *
-   * @param type The type of handshaking to be performed, i.e. as a client or as
-   * a server.
-   *
-   * @param buffers The buffered data to be reused for the handshake.
-   *
-   * @throws asio::system_error Thrown on failure.
-   */
-  template <typename ConstBufferSequence>
-  void handshake(handshake_type type, const ConstBufferSequence& buffers)
-  {
-    asio::error_code ec;
-    handshake(type, buffers, ec);
-    asio::detail::throw_error(ec, "handshake");
-  }
-
-  /// Perform SSL handshaking.
-  /**
-   * This function is used to perform SSL handshaking on the stream. The
-   * function call will block until handshaking is complete or an error occurs.
-   *
-   * @param type The type of handshaking to be performed, i.e. as a client or as
-   * a server.
-   *
-   * @param buffers The buffered data to be reused for the handshake.
-   *
-   * @param ec Set to indicate what error occurred, if any.
-   */
-  template <typename ConstBufferSequence>
-  ASIO_SYNC_OP_VOID handshake(handshake_type type,
-      const ConstBufferSequence& buffers, asio::error_code& ec)
-  {
-    detail::io(next_layer_, core_,
-        detail::buffered_handshake_op<ConstBufferSequence>(type, buffers), ec);
-    ASIO_SYNC_OP_VOID_RETURN(ec);
-  }
-
-  /// Start an asynchronous SSL handshake.
-  /**
-   * This function is used to asynchronously perform an SSL handshake on the
-   * stream. This function call always returns immediately.
-   *
-   * @param type The type of handshaking to be performed, i.e. as a client or as
-   * a server.
-   *
-   * @param handler The handler to be called when the handshake operation
-   * completes. Copies will be made of the handler as required. The equivalent
-   * function signature of the handler must be:
-   * @code void handler(
-   *   const asio::error_code& error // Result of operation.
-   * ); @endcode
-   */
-  template <typename HandshakeHandler>
-  ASIO_INITFN_RESULT_TYPE(HandshakeHandler,
-      void (asio::error_code))
-  async_handshake(handshake_type type,
-      ASIO_MOVE_ARG(HandshakeHandler) handler)
-  {
-    // If you get an error on the following line it means that your handler does
-    // not meet the documented type requirements for a HandshakeHandler.
-    ASIO_HANDSHAKE_HANDLER_CHECK(HandshakeHandler, handler) type_check;
-
-    asio::async_completion<HandshakeHandler,
-      void (asio::error_code)> init(handler);
-
-    detail::async_io(next_layer_, core_,
-        detail::handshake_op(type), init.completion_handler);
-
-    return init.result.get();
-  }
-
-  /// Start an asynchronous SSL handshake.
-  /**
-   * This function is used to asynchronously perform an SSL handshake on the
-   * stream. This function call always returns immediately.
-   *
-   * @param type The type of handshaking to be performed, i.e. as a client or as
-   * a server.
-   *
-   * @param buffers The buffered data to be reused for the handshake. Although
-   * the buffers object may be copied as necessary, ownership of the underlying
-   * buffers is retained by the caller, which must guarantee that they remain
-   * valid until the handler is called.
-   *
-   * @param handler The handler to be called when the handshake operation
-   * completes. Copies will be made of the handler as required. The equivalent
-   * function signature of the handler must be:
-   * @code void handler(
-   *   const asio::error_code& error, // Result of operation.
-   *   std::size_t bytes_transferred // Amount of buffers used in handshake.
-   * ); @endcode
-   */
-  template <typename ConstBufferSequence, typename BufferedHandshakeHandler>
-  ASIO_INITFN_RESULT_TYPE(BufferedHandshakeHandler,
-      void (asio::error_code, std::size_t))
-  async_handshake(handshake_type type, const ConstBufferSequence& buffers,
-      ASIO_MOVE_ARG(BufferedHandshakeHandler) handler)
-  {
-    // If you get an error on the following line it means that your handler does
-    // not meet the documented type requirements for a BufferedHandshakeHandler.
-    ASIO_BUFFERED_HANDSHAKE_HANDLER_CHECK(
-        BufferedHandshakeHandler, handler) type_check;
-
-    asio::async_completion<BufferedHandshakeHandler,
-      void (asio::error_code, std::size_t)> init(handler);
-
-    detail::async_io(next_layer_, core_,
-        detail::buffered_handshake_op<ConstBufferSequence>(type, buffers),
-        init.completion_handler);
-
-    return init.result.get();
-  }
-
-  /// Shut down SSL on the stream.
-  /**
-   * This function is used to shut down SSL on the stream. The function call
-   * will block until SSL has been shut down or an error occurs.
-   *
-   * @throws asio::system_error Thrown on failure.
-   */
-  void shutdown()
-  {
-    asio::error_code ec;
-    shutdown(ec);
-    asio::detail::throw_error(ec, "shutdown");
-  }
-
-  /// Shut down SSL on the stream.
-  /**
-   * This function is used to shut down SSL on the stream. The function call
-   * will block until SSL has been shut down or an error occurs.
-   *
-   * @param ec Set to indicate what error occurred, if any.
-   */
-  ASIO_SYNC_OP_VOID shutdown(asio::error_code& ec)
-  {
-    detail::io(next_layer_, core_, detail::shutdown_op(), ec);
-    ASIO_SYNC_OP_VOID_RETURN(ec);
-  }
-
-  /// Asynchronously shut down SSL on the stream.
-  /**
-   * This function is used to asynchronously shut down SSL on the stream. This
-   * function call always returns immediately.
-   *
-   * @param handler The handler to be called when the handshake operation
-   * completes. Copies will be made of the handler as required. The equivalent
-   * function signature of the handler must be:
-   * @code void handler(
-   *   const asio::error_code& error // Result of operation.
-   * ); @endcode
-   */
-  template <typename ShutdownHandler>
-  ASIO_INITFN_RESULT_TYPE(ShutdownHandler,
-      void (asio::error_code))
-  async_shutdown(ASIO_MOVE_ARG(ShutdownHandler) handler)
-  {
-    // If you get an error on the following line it means that your handler does
-    // not meet the documented type requirements for a ShutdownHandler.
-    ASIO_SHUTDOWN_HANDLER_CHECK(ShutdownHandler, handler) type_check;
-
-    asio::async_completion<ShutdownHandler,
-      void (asio::error_code)> init(handler);
-
-    detail::async_io(next_layer_, core_, detail::shutdown_op(),
-        init.completion_handler);
-
-    return init.result.get();
-  }
-
-  /// Write some data to the stream.
-  /**
-   * This function is used to write data on the stream. The function call will
-   * block until one or more bytes of data has been written successfully, or
-   * until an error occurs.
-   *
-   * @param buffers The data to be written.
-   *
-   * @returns The number of bytes written.
-   *
-   * @throws asio::system_error Thrown on failure.
-   *
-   * @note The write_some operation may not transmit all of the data to the
-   * peer. Consider using the @ref write function if you need to ensure that all
-   * data is written before the blocking operation completes.
-   */
-  template <typename ConstBufferSequence>
-  std::size_t write_some(const ConstBufferSequence& buffers)
-  {
-    asio::error_code ec;
-    std::size_t n = write_some(buffers, ec);
-    asio::detail::throw_error(ec, "write_some");
-    return n;
-  }
-
-  /// Write some data to the stream.
-  /**
-   * This function is used to write data on the stream. The function call will
-   * block until one or more bytes of data has been written successfully, or
-   * until an error occurs.
-   *
-   * @param buffers The data to be written to the stream.
-   *
-   * @param ec Set to indicate what error occurred, if any.
-   *
-   * @returns The number of bytes written. Returns 0 if an error occurred.
-   *
-   * @note The write_some operation may not transmit all of the data to the
-   * peer. Consider using the @ref write function if you need to ensure that all
-   * data is written before the blocking operation completes.
-   */
-  template <typename ConstBufferSequence>
-  std::size_t write_some(const ConstBufferSequence& buffers,
-      asio::error_code& ec)
-  {
-    return detail::io(next_layer_, core_,
-        detail::write_op<ConstBufferSequence>(buffers), ec);
-  }
-
-  /// Start an asynchronous write.
-  /**
-   * This function is used to asynchronously write one or more bytes of data to
-   * the stream. The function call always returns immediately.
-   *
-   * @param buffers The data to be written to the stream. Although the buffers
-   * object may be copied as necessary, ownership of the underlying buffers is
-   * retained by the caller, which must guarantee that they remain valid until
-   * the handler is called.
-   *
-   * @param handler The handler to be called when the write operation completes.
-   * Copies will be made of the handler as required. The equivalent function
-   * signature of the handler must be:
-   * @code void handler(
-   *   const asio::error_code& error, // Result of operation.
-   *   std::size_t bytes_transferred           // Number of bytes written.
-   * ); @endcode
-   *
-   * @note The async_write_some operation may not transmit all of the data to
-   * the peer. Consider using the @ref async_write function if you need to
-   * ensure that all data is written before the blocking operation completes.
-   */
-  template <typename ConstBufferSequence, typename WriteHandler>
-  ASIO_INITFN_RESULT_TYPE(WriteHandler,
-      void (asio::error_code, std::size_t))
-  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;
-
-    asio::async_completion<WriteHandler,
-      void (asio::error_code, std::size_t)> init(handler);
-
-    detail::async_io(next_layer_, core_,
-        detail::write_op<ConstBufferSequence>(buffers),
-        init.completion_handler);
-
-    return init.result.get();
-  }
-
-  /// Read some data from the stream.
-  /**
-   * This function is used to read data from the stream. The function call will
-   * block until one or more bytes of data has been read successfully, or until
-   * an error occurs.
-   *
-   * @param buffers The buffers into which the data will be read.
-   *
-   * @returns The number of bytes read.
-   *
-   * @throws asio::system_error Thrown on failure.
-   *
-   * @note The read_some operation may not read all of the requested number of
-   * bytes. Consider using the @ref read function if you need to ensure that the
-   * requested amount of data is read before the blocking operation completes.
-   */
-  template <typename MutableBufferSequence>
-  std::size_t read_some(const MutableBufferSequence& buffers)
-  {
-    asio::error_code ec;
-    std::size_t n = read_some(buffers, ec);
-    asio::detail::throw_error(ec, "read_some");
-    return n;
-  }
-
-  /// Read some data from the stream.
-  /**
-   * This function is used to read data from the stream. The function call will
-   * block until one or more bytes of data has been read successfully, or until
-   * an error occurs.
-   *
-   * @param buffers The buffers into which the data will be read.
-   *
-   * @param ec Set to indicate what error occurred, if any.
-   *
-   * @returns The number of bytes read. Returns 0 if an error occurred.
-   *
-   * @note The read_some operation may not read all of the requested number of
-   * bytes. Consider using the @ref read function if you need to ensure that the
-   * requested amount of data is read before the blocking operation completes.
-   */
-  template <typename MutableBufferSequence>
-  std::size_t read_some(const MutableBufferSequence& buffers,
-      asio::error_code& ec)
-  {
-    return detail::io(next_layer_, core_,
-        detail::read_op<MutableBufferSequence>(buffers), ec);
-  }
-
-  /// Start an asynchronous read.
-  /**
-   * This function is used to asynchronously read one or more bytes of data from
-   * the stream. The function call always returns immediately.
-   *
-   * @param buffers The buffers into which the data will be read. Although the
-   * buffers object may be copied as necessary, ownership of the underlying
-   * buffers is retained by the caller, which must guarantee that they remain
-   * valid until the handler is called.
-   *
-   * @param handler The handler to be called when the read operation completes.
-   * Copies will be made of the handler as required. The equivalent function
-   * signature of the handler must be:
-   * @code void handler(
-   *   const asio::error_code& error, // Result of operation.
-   *   std::size_t bytes_transferred           // Number of bytes read.
-   * ); @endcode
-   *
-   * @note The async_read_some operation may not read all of the requested
-   * number of bytes. Consider using the @ref async_read function if you need to
-   * ensure that the requested amount of data is read before the asynchronous
-   * operation completes.
-   */
-  template <typename MutableBufferSequence, typename ReadHandler>
-  ASIO_INITFN_RESULT_TYPE(ReadHandler,
-      void (asio::error_code, std::size_t))
-  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;
-
-    asio::async_completion<ReadHandler,
-      void (asio::error_code, std::size_t)> init(handler);
-
-    detail::async_io(next_layer_, core_,
-        detail::read_op<MutableBufferSequence>(buffers),
-        init.completion_handler);
-
-    return init.result.get();
-  }
-
-private:
-  Stream next_layer_;
-  detail::stream_core core_;
-};
-
-} // namespace ssl
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_SSL_STREAM_HPP