ndnboost: Include boost::iostreams for internal use.
diff --git a/include/ndnboost/iostreams/detail/error.hpp b/include/ndnboost/iostreams/detail/error.hpp
new file mode 100644
index 0000000..0489190
--- /dev/null
+++ b/include/ndnboost/iostreams/detail/error.hpp
@@ -0,0 +1,45 @@
+// (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_ERROR_HPP_INCLUDED
+#define NDNBOOST_IOSTREAMS_DETAIL_ERROR_HPP_INCLUDED
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+#include <ndnboost/iostreams/detail/ios.hpp> // failure.
+
+namespace ndnboost { namespace iostreams { namespace detail {
+
+inline NDNBOOST_IOSTREAMS_FAILURE cant_read()
+{ return NDNBOOST_IOSTREAMS_FAILURE("no read access"); }
+
+inline NDNBOOST_IOSTREAMS_FAILURE cant_write()
+{ return NDNBOOST_IOSTREAMS_FAILURE("no write access"); }
+
+inline NDNBOOST_IOSTREAMS_FAILURE cant_seek()
+{ return NDNBOOST_IOSTREAMS_FAILURE("no random access"); }
+
+inline NDNBOOST_IOSTREAMS_FAILURE bad_read()
+{ return NDNBOOST_IOSTREAMS_FAILURE("bad read"); }
+
+inline NDNBOOST_IOSTREAMS_FAILURE bad_putback()
+{ return NDNBOOST_IOSTREAMS_FAILURE("putback buffer full"); }
+
+inline NDNBOOST_IOSTREAMS_FAILURE bad_write()
+{ return NDNBOOST_IOSTREAMS_FAILURE("bad write"); }
+
+inline NDNBOOST_IOSTREAMS_FAILURE write_area_exhausted()
+{ return NDNBOOST_IOSTREAMS_FAILURE("write area exhausted"); }
+
+inline NDNBOOST_IOSTREAMS_FAILURE bad_seek()
+{ return NDNBOOST_IOSTREAMS_FAILURE("bad seek"); }
+
+} } } // End namespaces detail, iostreams, boost.
+
+#endif // #ifndef NDNBOOST_IOSTREAMS_DETAIL_ERROR_HPP_INCLUDED