--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/node/l3-demux.cc	Thu Feb 08 15:37:48 2007 +0100
@@ -0,0 +1,65 @@
+// -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*-
+//
+// Copyright (c) 2006 Georgia Tech Research Corporation
+// All rights reserved.
+//
+// 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: George F. Riley<riley@ece.gatech.edu>
+//
+// Implement the L3Protocols capability for ns3.
+// George F. Riley, Georgia Tech, Fall 2006
+
+#include "l3-demux.h"
+#include "l3-protocol.h"
+
+namespace ns3 {
+
+L3Demux::~L3Demux()
+{ // Delete each protocol in the map
+  for (L3Map_t::iterator i = m_protocols.begin(); i != m_protocols.end(); ++i)
+    {
+      delete i->second;
+    }
+}
+
+L3Demux::L3Demux(const L3Demux& rhs)
+{ // Copy constructor, copy each protocol
+  for (L3Map_t::const_iterator i = rhs.m_protocols.begin(); i != rhs.m_protocols.end(); ++i)
+    {
+      Insert(*i->second);
+    }
+}
+  
+L3Demux* L3Demux::Copy() const
+{ // Return a copy of this protocol manager
+  return new L3Demux(*this);
+}
+  
+L3Protocol* L3Demux::Insert(const L3Protocol& l3p)
+{
+  L3Protocol* l = l3p.Copy(); // Make a copy of the protocol
+  m_protocols.insert(L3Map_t::value_type(l3p.GetProtocolNumber (), l));
+  return l;
+}
+
+L3Protocol* L3Demux::Lookup(int p)
+{ // Look up a protocol by protocol number
+  L3Map_t::iterator i = m_protocols.find(p);
+  if (i == m_protocols.end()) return 0;  // Not found
+  return i->second; // Return the protocol
+}
+
+} //namespace ns3  
+