Adding a simple tutorial example
diff --git a/examples/ccnx-simple.cc b/examples/ccnx-simple.cc
new file mode 100644
index 0000000..1a2ae45
--- /dev/null
+++ b/examples/ccnx-simple.cc
@@ -0,0 +1,101 @@
+/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2012 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
+ *
+ * Author: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
+ */
+
+#include "ns3/core-module.h"
+#include "ns3/network-module.h"
+#include "ns3/point-to-point-module.h"
+#include "ns3/NDNabstraction-module.h"
+
+using namespace ns3;
+
+/**
+ * This scenario simulates a very simple network topology:
+ *
+ *
+ *      +----------+     1Mbps      +--------+     1Mbps      +----------+
+ *      | consumer | <------------> | router | <------------> | producer |
+ *      +----------+         10ms   +--------+          10ms  +----------+
+ *
+ *
+ * Consumer requests data from producer with frequency 10 interests per second
+ * (interests contain constantly increasing sequence number).
+ *
+ * For every received interest, producer replies with a data packet, containing
+ * 1024 bytes of virtual payload.
+ *
+ * Simulation time is 20 seconds, unless --finish parameter is specified
+ *
+ * To run scenario and see what is happening, use the following command:
+ *
+ *     NS_LOG=CcnxSimple:CcnxConsumer ./waf --run=ccnx-simple
+ */
+
+NS_LOG_COMPONENT_DEFINE ("CcnxSimple");
+
+int 
+main (int argc, char *argv[])
+{
+  Config::SetDefault ("ns3::PointToPointNetDevice::DataRate", StringValue ("1Mbps"));
+  Config::SetDefault ("ns3::PointToPointChannel::Delay", StringValue ("10ms"));
+  Config::SetDefault ("ns3::DropTailQueue::MaxPackets", StringValue ("20"));
+  
+  Time finishTime = Seconds (20.0); 
+
+  CommandLine cmd;
+  cmd.AddValue ("finish", "Finish time", finishTime);
+  cmd.Parse (argc, argv);
+
+  // Creating nodes
+  NodeContainer nodes;
+  nodes.Create (3);
+
+  // Connecting nodes using two links
+  PointToPointHelper p2p;
+  p2p.Install (nodes.Get (0), nodes.Get (1));
+  p2p.Install (nodes.Get (1), nodes.Get (2));
+
+  // Install CCNx stack on all nodes
+  NS_LOG_INFO ("Installing CCNx stack");
+  CcnxStackHelper ccnxHelper;
+  ccnxHelper.SetDefaultRoutes (true);
+  ccnxHelper.InstallAll ();
+
+  NS_LOG_INFO ("Installing CCNx applications");
+  CcnxAppHelper consumerHelper ("ns3::CcnxConsumerCbr");
+  // Consumer will request /prefix/0, /prefix/1, ...
+  consumerHelper.SetPrefix ("/prefix");
+  consumerHelper.SetAttribute ("Frequency", StringValue ("10")); // 10 interests a second
+  ApplicationContainer consumers = consumerHelper.Install (nodes.Get (0)); // first node
+  
+  CcnxAppHelper producerHelper ("ns3::CcnxProducer");
+  // Producer will reply to all requests starting with /prefix
+  producerHelper.SetPrefix ("/prefix");
+  producerHelper.SetAttribute ("PayloadSize", StringValue("1024"));
+  ApplicationContainer producers = producerHelper.Install (nodes.Get (2)); // last node
+  
+  Simulator::Stop (finishTime);
+    
+  NS_LOG_INFO ("Run Simulation.");
+  Simulator::Run ();
+  Simulator::Destroy ();
+  NS_LOG_INFO ("Done!");
+    
+  return 0;
+}
diff --git a/examples/wscript b/examples/wscript
new file mode 100644
index 0000000..def6b0a
--- /dev/null
+++ b/examples/wscript
@@ -0,0 +1,6 @@
+# -*- Mode: python; py-indent-offset: 4; indent-tabs-mode: nil; coding: utf-8; -*-
+
+def build(bld):
+    obj = bld.create_ns3_program('ccnx-simple', ['NDNabstraction'])
+    obj.source = 'ccnx-simple.cc'
+
diff --git a/wscript b/wscript
index 2643c67..baf5c8e 100644
--- a/wscript
+++ b/wscript
@@ -30,7 +30,7 @@
 def build(bld):
     deps = ['core', 'network', 'point-to-point',
             'topology-read','internet','applications',
-            'point-to-point-layout', 'netanim']
+            'point-to-point-layout']
     if bld.env['ENABLE_PYTHON_BINDINGS']:
         deps.append ('visualizer')
 
@@ -89,45 +89,7 @@
 
     tests.source = bld.path.ant_glob('test/*.cc');
 
-    if True or bld.env['ENABLE_EXAMPLES']:
-        obj = bld.create_ns3_program('ccnx-routing-simple', ['NDNabstraction'])
-        obj.source = 'examples/ccnx-routing-simple.cc'
-        
-        obj = bld.create_ns3_program('ccnx-grid', ['NDNabstraction'])
-        obj.source = 'examples/ccnx-grid.cc'
-
-        obj = bld.create_ns3_program('annotated-topology', ['NDNabstraction'])
-        obj.source = 'examples/annotated-topology-read-example.cc'
-
-        obj = bld.create_ns3_program('ccnx-sprint-topology', ['NDNabstraction'])
-        obj.source = 'examples/sprint-topology.cc'
-
-        obj = bld.create_ns3_program('ccnx-abilene-topology', ['NDNabstraction'])
-        obj.source = 'examples/abilene-topology.cc'
-
-        obj = bld.create_ns3_program('ccnx-synthetic-topology', ['NDNabstraction'])
-        obj.source = 'examples/synthetic-topology.cc'
-
-        obj = bld.create_ns3_program('congestion-pop', ['NDNabstraction'])
-        obj.source = 'examples/congestion-pop.cc'
-
-        obj = bld.create_ns3_program('link-failure', ['NDNabstraction'])
-        obj.source = 'examples/link-failure-sprint.cc'
-
-        obj = bld.create_ns3_program('link-failure-base', ['NDNabstraction'])
-        obj.source = 'examples/link-failure-base.cc'
-
-        obj = bld.create_ns3_program('blackhole-sprint', ['NDNabstraction'])
-        obj.source = 'examples/blackhole-sprint.cc'
-        
-        obj = bld.create_ns3_program('congestion-zoom', ['NDNabstraction'])
-        obj.source = 'examples/congestion-zoom.cc'
-
-        obj = bld.create_ns3_program('vanet-ccnx', ['NDNabstraction', 'highway-mobility'])
-        obj.source = 'examples/vanet-ccnx.cc'
-
-        obj = bld.create_ns3_program('car2car-wifi', ['internet', 'applications', 'visualizer', 'NDNabstraction'])
-        obj.source = 'examples/car2car-wifi.cc'
-
+    if bld.env.ENABLE_EXAMPLES:
+        bld.add_subdirs('examples')
 
     bld.ns3_python_bindings()