First step of refactoring code (ccnx prefix => ndn prefix)
diff --git a/helper/ndn-stack-helper.h b/helper/ndn-stack-helper.h
new file mode 100644
index 0000000..0bd69ad
--- /dev/null
+++ b/helper/ndn-stack-helper.h
@@ -0,0 +1,250 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
+/*
+ * Copyright (c) 2011 UCLA
+ *
+ * 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>
+ * Ilya Moiseenko <iliamo@cs.ucla.edu>
+ */
+
+#ifndef NDN_STACK_HELPER_H
+#define NDN_STACK_HELPER_H
+
+#include "ns3/packet.h"
+#include "ns3/ptr.h"
+#include "ns3/object-factory.h"
+#include "ns3/nstime.h"
+
+namespace ns3 {
+
+class Node;
+class NdnFaceContainer;
+class NdnFace;
+
+/**
+ * \ingroup ndn
+ * \defgroup ndn-helpers Helpers
+ */
+/**
+ * \ingroup ndn-helpers
+ * \brief Adding Ndn functionality to existing Nodes.
+ *
+ * This helper enables pcap and ascii tracing of events in the ndn stack
+ * associated with a node. This is substantially similar to the tracing that
+ * happens in device helpers, but the important difference is that, well, there
+ * is no device. This means that the creation of output file names will change,
+ * and also the user-visible methods will not reference devices and therefore
+ * the number of trace enable methods is reduced.
+ *
+ * Normally we eschew multiple inheritance, however, the classes
+ * PcapUserHelperForNdn and AsciiTraceUserHelperForNdn are treated as
+ * "mixins". A mixin is a self-contained class that encapsulates a general
+ * attribute or a set of functionality that may be of interest to many other
+ * classes.
+ */
+class NdnStackHelper
+{
+public:
+ /**
+ * \brief Create a new NdnStackHelper with a default NDN_FLOODING forwarding stategy
+ */
+ NdnStackHelper();
+
+ /**
+ * \brief Destroy the NdnStackHelper
+ */
+ virtual ~NdnStackHelper ();
+
+ /**
+ * @brief Set parameters of NdnL3Protocol
+ */
+ void
+ SetNdnAttributes (const std::string &attr1 = "", const std::string &value1 = "",
+ const std::string &attr2 = "", const std::string &value2 = "",
+ const std::string &attr3 = "", const std::string &value3 = "",
+ const std::string &attr4 = "", const std::string &value4 = "");
+
+
+ /**
+ * @brief Set forwarding strategy class and its attributes
+ * @param forwardingStrategyClass string containing name of the forwarding strategy class
+ *
+ * Valid options are "ns3::NdnFloodingStrategy" (default) and "ns3::NdnBestRouteStrategy"
+ *
+ * Other strategies can be implemented, inheriting ns3::NdnForwardingStrategy class
+ */
+ void
+ SetForwardingStrategy (const std::string &forwardingStrategyClass,
+ const std::string &attr1 = "", const std::string &value1 = "",
+ const std::string &attr2 = "", const std::string &value2 = "",
+ const std::string &attr3 = "", const std::string &value3 = "",
+ const std::string &attr4 = "", const std::string &value4 = "");
+
+ /**
+ * @brief Set content store class and its attributes
+ * @param contentStoreClass string, representing class of the content store
+ */
+ void
+ SetContentStore (const std::string &contentStoreClass,
+ const std::string &attr1 = "", const std::string &value1 = "",
+ const std::string &attr2 = "", const std::string &value2 = "",
+ const std::string &attr3 = "", const std::string &value3 = "",
+ const std::string &attr4 = "", const std::string &value4 = "");
+
+ /**
+ * @brief Set PIT class and its attributes
+ * @param pitClass string, representing class of PIT
+ */
+ void
+ SetPit (const std::string &pitClass,
+ const std::string &attr1 = "", const std::string &value1 = "",
+ const std::string &attr2 = "", const std::string &value2 = "",
+ const std::string &attr3 = "", const std::string &value3 = "",
+ const std::string &attr4 = "", const std::string &value4 = "");
+
+ /**
+ * @brief Set FIB class and its attributes
+ * @param pitClass string, representing class of FIB
+ */
+ void
+ SetFib (const std::string &fibClass,
+ const std::string &attr1 = "", const std::string &value1 = "",
+ const std::string &attr2 = "", const std::string &value2 = "",
+ const std::string &attr3 = "", const std::string &value3 = "",
+ const std::string &attr4 = "", const std::string &value4 = "");
+
+ /**
+ * @brief Enable Interest limits (disabled by default)
+ *
+ * @param enable Enable or disable limits
+ * @param avgRtt Average RTT
+ * @param avgContentObject Average size of contentObject packets (including all headers)
+ * @param avgInterest Average size of interest packets (including all headers)
+ */
+ void
+ EnableLimits (bool enable = true, Time avgRtt=Seconds(0.1), uint32_t avgContentObject=1100, uint32_t avgInterest=40);
+
+ /**
+ * \brief Install Ndn stack on the node
+ *
+ * This method will assert if called on a node that already has Ndn object
+ * installed on it
+ *
+ * \param nodeName The name of the node on which to install the stack.
+ *
+ * \returns list of installed faces in the form of a smart pointer
+ * to NdnFaceContainer object
+ */
+ Ptr<NdnFaceContainer>
+ Install (std::string nodeName) const;
+
+ /**
+ * \brief Install Ndn stack on the node
+ *
+ * This method will assert if called on a node that already has Ndn object
+ * installed on it
+ *
+ * \param node The node on which to install the stack.
+ *
+ * \returns list of installed faces in the form of a smart pointer
+ * to NdnFaceContainer object
+ */
+ Ptr<NdnFaceContainer>
+ Install (Ptr<Node> node) const;
+
+ /**
+ * \brief Install Ndn stack on each node in the input container
+ *
+ * The program will assert if this method is called on a container with a node
+ * that already has an ndn object aggregated to it.
+ *
+ * \param c NodeContainer that holds the set of nodes on which to install the
+ * new stacks.
+ *
+ * \returns list of installed faces in the form of a smart pointer
+ * to NdnFaceContainer object
+ */
+ Ptr<NdnFaceContainer>
+ Install (NodeContainer c) const;
+
+ /**
+ * \brief Install Ndn stack on all nodes in the simulation
+ *
+ * \returns list of installed faces in the form of a smart pointer
+ * to NdnFaceContainer object
+ */
+ Ptr<NdnFaceContainer>
+ InstallAll () const;
+
+ /**
+ * \brief Add forwarding entry in FIB
+ *
+ * \param nodeName Node name
+ * \param prefix Routing prefix
+ * \param faceId Face index
+ * \param metric Routing metric
+ */
+ static void
+ AddRoute (std::string nodeName, std::string prefix, uint32_t faceId, int32_t metric);
+
+ /**
+ * \brief Add forwarding entry in FIB
+ *
+ * \param nodeName Node
+ * \param prefix Routing prefix
+ * \param faceId Face index
+ * \param metric Routing metric
+ */
+ static void
+ AddRoute (Ptr<Node> node, std::string prefix, uint32_t faceId, int32_t metric);
+
+ /**
+ * \brief Add forwarding entry in FIB
+ *
+ * \param node Node
+ * \param prefix Routing prefix
+ * \param face Face
+ * \param metric Routing metric
+ */
+ static void
+ AddRoute (Ptr<Node> node, std::string prefix, Ptr<NdnFace> face, int32_t metric);
+
+ /**
+ * \brief Set flag indicating necessity to install default routes in FIB
+ */
+ void
+ SetDefaultRoutes (bool needSet);
+
+private:
+ NdnStackHelper (const NdnStackHelper &);
+ NdnStackHelper &operator = (const NdnStackHelper &o);
+
+private:
+ ObjectFactory m_ndnFactory;
+ ObjectFactory m_strategyFactory;
+ ObjectFactory m_contentStoreFactory;
+ ObjectFactory m_pitFactory;
+ ObjectFactory m_fibFactory;
+
+ bool m_limitsEnabled;
+ Time m_avgRtt;
+ uint32_t m_avgContentObjectSize;
+ uint32_t m_avgInterestSize;
+ bool m_needSetDefaultRoutes;
+};
+
+} // namespace ns3
+
+#endif /* NDN_STACK_HELPER_H */