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diff --git a/boost/beast/core/detail/remap_post_to_defer.hpp b/boost/beast/core/detail/remap_post_to_defer.hpp
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+++ b/boost/beast/core/detail/remap_post_to_defer.hpp
@@ -0,0 +1,109 @@
+//
+// Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+// Official repository: https://github.com/boostorg/beast
+//
+
+#ifndef BOOST_BEAST_DETAIL_REMAP_POST_TO_DEFER_HPP
+#define BOOST_BEAST_DETAIL_REMAP_POST_TO_DEFER_HPP
+
+#include <boost/asio/bind_executor.hpp>
+#include <boost/asio/is_executor.hpp>
+#include <boost/core/empty_value.hpp>
+#include <type_traits>
+#include <utility>
+
+namespace boost {
+namespace beast {
+namespace detail {
+
+template<class Executor>
+class remap_post_to_defer
+    : private boost::empty_value<Executor>
+{
+    BOOST_STATIC_ASSERT(
+        net::is_executor<Executor>::value);
+
+    Executor const&
+    ex() const noexcept
+    {
+        return this->get();
+    }
+
+public:
+    remap_post_to_defer(
+        remap_post_to_defer&&) = default;
+
+    remap_post_to_defer(
+        remap_post_to_defer const&) = default;
+
+    explicit
+    remap_post_to_defer(
+        Executor const& ex)
+        : boost::empty_value<Executor>(
+            boost::empty_init_t{}, ex)
+    {
+    }
+
+    bool
+    operator==(
+        remap_post_to_defer const& other) const noexcept
+    {
+        return ex() == other.ex();
+    }
+
+    bool
+    operator!=(
+        remap_post_to_defer const& other) const noexcept
+    {
+        return ex() != other.ex();
+    }
+
+    decltype(std::declval<Executor const&>().context())
+    context() const noexcept
+    {
+        return ex().context();
+    }
+
+    void
+    on_work_started() const noexcept
+    {
+        ex().on_work_started();
+    }
+
+    void
+    on_work_finished() const noexcept
+    {
+        ex().on_work_finished();
+    }
+
+    template<class F, class A>
+    void
+    dispatch(F&& f, A const& a) const
+    {
+        ex().dispatch(std::forward<F>(f), a);
+    }
+
+    template<class F, class A>
+    void
+    post(F&& f, A const& a) const
+    {
+        ex().defer(std::forward<F>(f), a);
+    }
+
+    template<class F, class A>
+    void
+    defer(F&& f, A const& a) const
+    {
+        ex().defer(std::forward<F>(f), a);
+    }
+};
+
+} // detail
+} // beast
+} // boost
+
+#endif