diff --git a/include/ndnboost/iostreams/detail/dispatch.hpp b/include/ndnboost/iostreams/detail/dispatch.hpp
new file mode 100644
index 0000000..fa7e926
--- /dev/null
+++ b/include/ndnboost/iostreams/detail/dispatch.hpp
@@ -0,0 +1,41 @@
+// (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com)
+// (C) Copyright 2003-2007 Jonathan Turkanis
+// 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.)
+
+// See http://www.boost.org/libs/iostreams for documentation.
+
+#ifndef NDNBOOST_IOSTREAMS_DETAIL_DISPATCH_HPP_INCLUDED
+#define NDNBOOST_IOSTREAMS_DETAIL_DISPATCH_HPP_INCLUDED
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif              
+
+#include <ndnboost/config.hpp>                   // NDNBOOST_DEDUCED_TYPENAME. 
+#include <ndnboost/iostreams/detail/select.hpp>
+#include <ndnboost/iostreams/traits.hpp>         // category_of. 
+#include <ndnboost/mpl/void.hpp>          
+#include <ndnboost/type_traits/is_convertible.hpp>         
+
+namespace ndnboost { namespace iostreams {namespace detail {
+    
+template< typename T, typename Tag1, typename Tag2,
+          typename Tag3 = mpl::void_, typename Tag4 = mpl::void_,
+          typename Tag5 = mpl::void_, typename Tag6 = mpl::void_,
+          typename Category = 
+              NDNBOOST_DEDUCED_TYPENAME category_of<T>::type >
+struct dispatch 
+    : iostreams::select<  // Disambiguation for Tru64.
+          is_convertible<Category, Tag1>, Tag1,
+          is_convertible<Category, Tag2>, Tag2,
+          is_convertible<Category, Tag3>, Tag3,
+          is_convertible<Category, Tag4>, Tag4,
+          is_convertible<Category, Tag5>, Tag5,
+          is_convertible<Category, Tag6>, Tag6
+      >
+    { };
+
+} } } // End namespaces detail, iostreams, boost.
+
+#endif // #ifndef NDNBOOST_IOSTREAMS_DETAIL_DISPATCH_HPP_INCLUDED