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diff --git a/boost/beast/core/detail/service_base.hpp b/boost/beast/core/detail/service_base.hpp
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+++ b/boost/beast/core/detail/service_base.hpp
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+//
+// 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_SERVICE_BASE_HPP
+#define BOOST_BEAST_DETAIL_SERVICE_BASE_HPP
+
+#include <boost/asio/execution_context.hpp>
+
+namespace boost {
+namespace beast {
+namespace detail {
+
+template<class T>
+struct service_id : net::execution_context::id
+{
+};
+
+template<class T>
+struct service_base : net::execution_context::service
+{
+    static service_id<T> id;
+
+    explicit
+    service_base(net::execution_context& ctx)
+        : net::execution_context::service(ctx)
+    {
+    }
+};
+
+template<class T>
+service_id<T> service_base<T>::id;
+
+} // detail
+} // beast
+} // boost
+
+#endif