diff --git a/examples/ndn-custom-apps/custom-app.hpp b/examples/ndn-custom-apps/custom-app.hpp
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+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2011-2015  Regents of the University of California.
+ *
+ * This file is part of ndnSIM. See AUTHORS for complete list of ndnSIM authors and
+ * contributors.
+ *
+ * ndnSIM is free software: you can redistribute it and/or modify it under the terms
+ * of the GNU General Public License as published by the Free Software Foundation,
+ * either version 3 of the License, or (at your option) any later version.
+ *
+ * ndnSIM 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
+ * ndnSIM, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+// custom-app.hpp
+
+#ifndef CUSTOM_APP_H_
+#define CUSTOM_APP_H_
+
+#include "ns3/ndnSIM/apps/ndn-app.hpp"
+
+namespace ns3 {
+
+/**
+ * @brief A simple custom application
+ *
+ * This applications demonstrates how to send Interests and respond with Datas to incoming interests
+ *
+ * When application starts it "sets interest filter" (install FIB entry) for /prefix/sub, as well as
+ * sends Interest for this prefix
+ *
+ * When an Interest is received, it is replied with a Data with 1024-byte fake payload
+ */
+class CustomApp : public ndn::App {
+public:
+  // register NS-3 type "CustomApp"
+  static TypeId
+  GetTypeId();
+
+  // (overridden from ndn::App) Processing upon start of the application
+  virtual void
+  StartApplication();
+
+  // (overridden from ndn::App) Processing when application is stopped
+  virtual void
+  StopApplication();
+
+  // (overridden from ndn::App) Callback that will be called when Interest arrives
+  virtual void
+  OnInterest(std::shared_ptr<const ndn::Interest> interest);
+
+  // (overridden from ndn::App) Callback that will be called when Data arrives
+  virtual void
+  OnData(std::shared_ptr<const ndn::Data> contentObject);
+
+private:
+  void
+  SendInterest();
+};
+
+} // namespace ns3
+
+#endif // CUSTOM_APP_H_