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diff --git a/boost/beast/core/impl/error.ipp b/boost/beast/core/impl/error.ipp
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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_IMPL_ERROR_IPP
+#define BOOST_BEAST_IMPL_ERROR_IPP
+
+#include <boost/beast/core/error.hpp>
+
+namespace boost {
+namespace beast {
+
+namespace detail {
+
+class error_codes : public error_category
+{
+public:
+    const char*
+    name() const noexcept override
+    {
+        return "boost.beast";
+    }
+
+    BOOST_BEAST_DECL
+    std::string
+    message(int ev) const override
+    {
+        switch(static_cast<error>(ev))
+        {
+        default:
+        case error::timeout: return
+            "The socket was closed due to a timeout";
+        }
+    }
+
+    BOOST_BEAST_DECL
+    error_condition
+    default_error_condition(int ev) const noexcept override
+    {
+        switch(static_cast<error>(ev))
+        {
+        default:
+    //        return {ev, *this};
+        case error::timeout:
+            return condition::timeout;
+        }
+    }
+};
+
+class error_conditions : public error_category
+{
+public:
+    BOOST_BEAST_DECL
+    const char*
+    name() const noexcept override
+    {
+        return "boost.beast";
+    }
+
+    BOOST_BEAST_DECL
+    std::string
+    message(int cv) const override
+    {
+        switch(static_cast<condition>(cv))
+        {
+        default:
+        case condition::timeout:
+            return "The operation timed out";
+        }
+    }
+};
+
+} // detail
+
+error_code
+make_error_code(error e)
+{
+    static detail::error_codes const cat{};
+    return error_code{static_cast<
+        std::underlying_type<error>::type>(e), cat};
+}
+
+error_condition
+make_error_condition(condition c)
+{
+    static detail::error_conditions const cat{};
+    return error_condition{static_cast<
+        std::underlying_type<condition>::type>(c), cat};
+}
+
+} // beast
+} // boost
+
+#endif