examples: Restoring old examples that can be restored and fixing existing ones
diff --git a/examples/ndn-custom-apps/hijacker.hpp b/examples/ndn-custom-apps/hijacker.hpp
new file mode 100644
index 0000000..c873f81
--- /dev/null
+++ b/examples/ndn-custom-apps/hijacker.hpp
@@ -0,0 +1,51 @@
+/* -*- 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/>.
+ **/
+
+// hijacker.hpp
+
+#ifndef HIJACKER_H_
+#define HIJACKER_H_
+
+#include "ns3/ndnSIM/apps/ndn-app.hpp"
+
+namespace ns3 {
+
+class Hijacker : public ndn::App {
+public:
+ static TypeId
+ GetTypeId();
+
+ Hijacker();
+
+ // Receive all Interests but do nothing in response
+ void
+ OnInterest(std::shared_ptr<const ndn::Interest> interest);
+
+protected:
+ // inherited from Application base class.
+ virtual void
+ StartApplication();
+
+ virtual void
+ StopApplication();
+};
+
+} // namespace ns3
+
+#endif // HIJACKER_H_