diff --git a/include/beast/core/detail/sync_ostream.hpp b/include/beast/core/detail/sync_ostream.hpp
new file mode 100644
index 00000000..2d5b9e82
--- /dev/null
+++ b/include/beast/core/detail/sync_ostream.hpp
@@ -0,0 +1,93 @@
+//
+// Copyright (c) 2013-2016 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)
+//
+
+#ifndef BEAST_DETAIL_SYNC_OSTREAM_HPP
+#define BEAST_DETAIL_SYNC_OSTREAM_HPP
+
+#include <beast/core/buffer_concepts.hpp>
+#include <beast/core/error.hpp>
+#include <boost/asio/buffer.hpp>
+#include <ostream>
+
+namespace beast {
+namespace detail {
+
+/** A SyncWriteStream which outputs to a `std::ostream`
+
+    Objects of this type meet the requirements of @b SyncWriteStream.
+*/
+class sync_ostream
+{
+    std::ostream& os_;
+
+public:
+    /** Construct the stream.
+
+        @param os The associated `std::ostream`. All buffers
+        written will be passed to the associated output stream.
+    */
+    sync_ostream(std::ostream& os)
+        : os_(os)
+    {
+    }
+
+    template<class ConstBufferSequence>
+    std::size_t
+    write_some(ConstBufferSequence const& buffers);
+
+    template<class ConstBufferSequence>
+    std::size_t
+    write_some(ConstBufferSequence const& buffers,
+        error_code& ec);
+};
+
+template<class ConstBufferSequence>
+std::size_t
+sync_ostream::
+write_some(ConstBufferSequence const& buffers)
+{
+    static_assert(
+        is_ConstBufferSequence<ConstBufferSequence>::value,
+            "ConstBufferSequence requirements not met");
+    error_code ec;
+    auto const n = write_some(buffers, ec);
+    if(ec)
+        throw system_error{ec};
+    return n;
+}
+
+template<class ConstBufferSequence>
+std::size_t
+sync_ostream::
+write_some(ConstBufferSequence const& buffers,
+    error_code& ec)
+{
+    static_assert(
+        is_ConstBufferSequence<ConstBufferSequence>::value,
+            "ConstBufferSequence requirements not met");
+    std::size_t n = 0;
+    using boost::asio::buffer_cast;
+    using boost::asio::buffer_size;
+    for(auto const& buffer : buffers)
+    {
+        os_.write(buffer_cast<char const*>(buffer),
+            buffer_size(buffer));
+        if(os_.fail())
+        {
+            ec = errc::make_error_code(
+                errc::no_stream_resources);
+            break;
+        }
+        n += buffer_size(buffer);
+    }
+    return n;
+}
+
+} // detail
+} // beast
+
+#endif
diff --git a/include/beast/http/impl/write.ipp b/include/beast/http/impl/write.ipp
index 1ed0a4cc..de443d7f 100644
--- a/include/beast/http/impl/write.ipp
+++ b/include/beast/http/impl/write.ipp
@@ -18,6 +18,7 @@
 #include <beast/core/stream_concepts.hpp>
 #include <beast/core/streambuf.hpp>
 #include <beast/core/write_dynabuf.hpp>
+#include <beast/core/detail/sync_ostream.hpp>
 #include <boost/asio/write.hpp>
 #include <boost/logic/tribool.hpp>
 #include <condition_variable>
@@ -598,55 +599,6 @@ async_write(AsyncWriteStream& stream,
     return completion.result.get();
 }
 
-namespace detail {
-
-class ostream_SyncStream
-{
-    std::ostream& os_;
-
-public:
-    ostream_SyncStream(std::ostream& os)
-        : os_(os)
-    {
-    }
-
-    template<class ConstBufferSequence>
-    std::size_t
-    write_some(ConstBufferSequence const& buffers)
-    {
-        error_code ec;
-        auto const n = write_some(buffers, ec);
-        if(ec)
-            throw system_error{ec};
-        return n;
-    }
-
-    template<class ConstBufferSequence>
-    std::size_t
-    write_some(ConstBufferSequence const& buffers,
-        error_code& ec)
-    {
-        std::size_t n = 0;
-        using boost::asio::buffer_cast;
-        using boost::asio::buffer_size;
-        for(auto const& buffer : buffers)
-        {
-            os_.write(buffer_cast<char const*>(buffer),
-                buffer_size(buffer));
-            if(os_.fail())
-            {
-                ec = errc::make_error_code(
-                    errc::no_stream_resources);
-                break;
-            }
-            n += buffer_size(buffer);
-        }
-        return n;
-    }
-};
-
-} // detail
-
 template<bool isRequest, class Body, class Headers>
 std::ostream&
 operator<<(std::ostream& os,
@@ -659,7 +611,7 @@ operator<<(std::ostream& os,
     static_assert(is_Writer<typename Body::writer,
         message<isRequest, Body, Headers>>::value,
             "Writer requirements not met");
-    detail::ostream_SyncStream oss(os);
+    beast::detail::sync_ostream oss{os};
     error_code ec;
     write(oss, msg, ec);
     if(ec && ec != boost::asio::error::eof)