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diff --git a/boost/beast/core/detail/char_buffer.hpp b/boost/beast/core/detail/char_buffer.hpp
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+++ b/boost/beast/core/detail/char_buffer.hpp
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+//
+// Copyright (c) 2019 Damian Jarek(damian.jarek93@gmail.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_CORE_DETAIL_CHAR_BUFFER_HPP
+#define BOOST_BEAST_CORE_DETAIL_CHAR_BUFFER_HPP
+
+#include <boost/config.hpp>
+#include <cstddef>
+#include <cstring>
+#include <cstdint>
+
+namespace boost {
+namespace beast {
+namespace detail {
+
+template <std::size_t N>
+class char_buffer
+{
+public:
+    bool try_push_back(char c)
+    {
+        if (size_ == N)
+            return false;
+        buf_[size_++] = c;
+        return true;
+    }
+
+    bool try_append(char const* first, char const* last)
+    {
+        std::size_t const n = last - first;
+        if (n > N - size_)
+            return false;
+        std::memmove(&buf_[size_], first, n);
+        size_ += n;
+        return true;
+    }
+
+    void clear() noexcept
+    {
+        size_ = 0;
+    }
+
+    char* data() noexcept
+    {
+        return buf_;
+    }
+
+    char const* data() const noexcept
+    {
+        return buf_;
+    }
+
+    std::size_t size() const noexcept
+    {
+        return size_;
+    }
+
+    bool empty() const noexcept
+    {
+        return size_ == 0;
+    }
+
+private:
+    std::size_t size_= 0;
+    char buf_[N];
+};
+
+} // detail
+} // beast
+} // boost
+
+#endif