First step of refactoring code (ccnx prefix => ndn prefix)
diff --git a/model/ndn-app-face.h b/model/ndn-app-face.h
new file mode 100644
index 0000000..9a9d2c5
--- /dev/null
+++ b/model/ndn-app-face.h
@@ -0,0 +1,83 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
+/*
+ * Copyright (c) 2011 University of California, Los Angeles
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation;
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Authors: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
+ Ilya Moiseenko <iliamo@cs.ucla.edu>
+ */
+
+#ifndef NDN_APP_FACE_H
+#define NDN_APP_FACE_H
+
+#include "ndn-face.h"
+#include "ns3/traced-callback.h"
+
+namespace ns3
+{
+
+class NdnInterestHeader;
+class NdnContentObjectHeader;
+class Packet;
+class NdnApp;
+
+/**
+ * \ingroup ndn-face
+ * \brief Implementation of application Ndn face
+ *
+ * This class defines basic functionality of Ndn face. Face is core
+ * component responsible for actual delivery of data packet to and
+ * from Ndn stack
+ *
+ * \see NdnAppFace, NdnNetDeviceFace, NdnIpv4Face, NdnUdpFace
+ */
+class NdnAppFace : public NdnFace
+{
+public:
+ static TypeId
+ GetTypeId ();
+
+ /**
+ * \brief Default constructor
+ */
+ NdnAppFace (Ptr<NdnApp> app);
+ virtual ~NdnAppFace();
+
+ ////////////////////////////////////////////////////////////////////
+ // methods overloaded from NdnFace
+ virtual void
+ RegisterProtocolHandler (ProtocolHandler handler);
+
+protected:
+ virtual bool
+ SendImpl (Ptr<Packet> p);
+
+public:
+ virtual std::ostream&
+ Print (std::ostream &os) const;
+ ////////////////////////////////////////////////////////////////////
+
+private:
+ NdnAppFace ();
+ NdnAppFace (const NdnAppFace &); ///< \brief Disabled copy constructor
+ NdnAppFace& operator= (const NdnAppFace &); ///< \brief Disabled copy operator
+
+private:
+ Ptr<NdnApp> m_app;
+};
+
+} // namespace ns3
+
+#endif // NDN_APP_FACE_H