More progress on CCNx stack. Now we have helpers. Everything compiles, but not yet working

diff --git a/helper/ccnx-forwarding-helper.cc b/helper/ccnx-forwarding-helper.cc
new file mode 100644
index 0000000..ed038cb
--- /dev/null
+++ b/helper/ccnx-forwarding-helper.cc
@@ -0,0 +1,83 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2008 INRIA
+ *
+ * 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: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
+ */
+#include "ns3/node.h"
+#include "ns3/node-list.h"
+#include "ns3/simulator.h"
+#include "ns3/ccnx-forwarding-protocol.h"
+#include "ccnx-forwarding-helper.h"
+
+namespace ns3 {
+
+CcnxForwardingHelper::~CcnxForwardingHelper ()
+{
+}
+
+void
+CcnxForwardingHelper::PrintForwardingTableAllAt (Time printTime, Ptr<OutputStreamWrapper> stream) const
+{
+  for (uint32_t i = 0; i < NodeList::GetNNodes (); i++)
+    {
+      Ptr<Node> node = NodeList::GetNode (i);
+      Simulator::Schedule (printTime, &CcnxForwardingHelper::Print, this, node, stream);
+    }
+}
+
+void
+CcnxForwardingHelper::PrintForwardingTableAllEvery (Time printInterval, Ptr<OutputStreamWrapper> stream) const
+{
+  for (uint32_t i = 0; i < NodeList::GetNNodes (); i++)
+    {
+      Ptr<Node> node = NodeList::GetNode (i);
+      Simulator::Schedule (printInterval, &CcnxForwardingHelper::PrintEvery, this, printInterval, node, stream);
+    }
+}
+
+void
+CcnxForwardingHelper::PrintForwardingTableAt (Time printTime, Ptr<Node> node, Ptr<OutputStreamWrapper> stream) const
+{
+  Simulator::Schedule (printTime, &CcnxForwardingHelper::Print, this, node, stream);
+}
+
+void
+CcnxForwardingHelper::PrintForwardingTableEvery (Time printInterval,Ptr<Node> node, Ptr<OutputStreamWrapper> stream) const
+{
+  Simulator::Schedule (printInterval, &CcnxForwardingHelper::PrintEvery, this, printInterval, node, stream);
+}
+
+void
+CcnxForwardingHelper::Print (Ptr<Node> node, Ptr<OutputStreamWrapper> stream) const
+{
+  Ptr<Ccnx> ccnx = node->GetObject<Ccnx> ();
+  Ptr<CcnxForwardingProtocol> rp = ccnx->GetForwardingProtocol ();
+  NS_ASSERT (rp);
+  rp->PrintForwardingTable (stream);
+}
+
+void
+CcnxForwardingHelper::PrintEvery (Time printInterval, Ptr<Node> node, Ptr<OutputStreamWrapper> stream) const
+{
+  Ptr<Ccnx> ccnx = node->GetObject<Ccnx> ();
+  Ptr<CcnxForwardingProtocol> rp = ccnx->GetForwardingProtocol ();
+  NS_ASSERT (rp);
+  rp->PrintForwardingTable (stream);
+  Simulator::Schedule (printInterval, &CcnxForwardingHelper::PrintEvery, this, printInterval, node, stream);
+}
+
+} // namespace ns3