examples/names.cc
changeset 4139 d45e62c78504
child 4140 6bbf05bf4826
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/names.cc	Tue Jan 20 15:47:14 2009 -0800
@@ -0,0 +1,142 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * 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
+ */
+
+// Network topology
+//
+//       n0    n1   n2   n3
+//       |     |    |    |
+//       =================
+//              LAN
+//
+
+#include <fstream>
+#include "ns3/core-module.h"
+#include "ns3/simulator-module.h"
+#include "ns3/helper-module.h"
+
+using namespace ns3;
+
+NS_LOG_COMPONENT_DEFINE ("NamesExample");
+
+void 
+RxEvent (std::string context, Ptr<const Packet> packet)
+{
+  NS_LOG_INFO (context << " packet " << packet);
+}
+
+int 
+main (int argc, char *argv[])
+{
+  //
+  // Users may find it convenient to turn on explicit debugging
+  // for selected modules; the below lines suggest how to do this
+  //
+#if 1
+  LogComponentEnable ("NamesExample", LOG_LEVEL_INFO);
+#endif
+
+  //
+  // Allow the user to override any of the defaults and the above Bind() at
+  // run-time, via command-line arguments
+  //
+  CommandLine cmd;
+  cmd.Parse (argc, argv);
+
+  //
+  // Explicitly create the nodes required by the topology (shown above).
+  //
+  NS_LOG_INFO ("Create nodes.");
+  NodeContainer n;
+  n.Create (4);
+
+  //
+  // We're going to use the zeroth node in the container as the client, and
+  // the first node as the server.  Add some "human readable" names for these
+  // nodes.  The first parameter specifies the root of the "/Names" name space
+  // as the destination, so these will go into the name system as "/Names/client"
+  // and "/Names/server".  
+  //
+  Names::Add ("/Names", "client", n.Get (0));
+  Names::Add ("/Names", "server", n.Get (1));
+
+  InternetStackHelper internet;
+  internet.Install (n);
+
+  NS_LOG_INFO ("Create devices.");
+  CsmaHelper csma;
+  csma.SetChannelAttribute ("DataRate", DataRateValue (DataRate(5000000)));
+  csma.SetChannelAttribute ("Delay", TimeValue (MilliSeconds (2)));
+  csma.SetDeviceAttribute ("Mtu", UintegerValue (1400));
+  NetDeviceContainer d = csma.Install (n);
+
+  //
+  // Add some human readable names for the devices we'll be interested in.
+  // We add the names to the name space "under" the nodes we created above.
+  // This has the effect of making "/Names/client/eth0" and "/Names/server/eth0"
+  // Note that the first parameter must reference a previously named object,
+  // and we have, in fact, already named objects "/Names/client" and
+  // "/Names/server"
+  //
+  Names::Add ("/Names/client", "eth0", d.Get (0));
+  Names::Add ("/Names/server", "eth0", d.Get (1));
+
+  Ipv4AddressHelper ipv4;
+
+  //
+  // We've got the "hardware" in place.  Now we need to add IP addresses.
+  //
+  NS_LOG_INFO ("Assign IP Addresses.");
+  ipv4.SetBase ("10.1.1.0", "255.255.255.0");
+  Ipv4InterfaceContainer i = ipv4.Assign (d);
+
+  NS_LOG_INFO ("Create Applications.");
+
+  //
+  // Create a UdpEchoServer application on the server node.  Note that we 
+  // reference the server node by name in the Install method below.
+  //
+  uint16_t port = 9;  // well-known echo port number
+  UdpEchoServerHelper server (port);
+  ApplicationContainer apps = server.Install (Names::Find<Node> ("/Names/server"));
+  apps.Start (Seconds (1.0));
+  apps.Stop (Seconds (10.0));
+
+  //
+  // Create a UdpEchoClient application to send UDP datagrams from node zero to
+  // node one.  Notice that we reference the client node by name in the Install
+  // method below.
+  //
+  uint32_t packetSize = 1024;
+  uint32_t maxPacketCount = 1;
+  Time interPacketInterval = Seconds (1.);
+  UdpEchoClientHelper client (i.GetAddress (1), port);
+  client.SetAttribute ("MaxPackets", UintegerValue (maxPacketCount));
+  client.SetAttribute ("Interval", TimeValue (interPacketInterval));
+  client.SetAttribute ("PacketSize", UintegerValue (packetSize));
+  apps = client.Install (Names::Find<Node> ("/Names/client"));
+  apps.Start (Seconds (2.0));
+  apps.Stop (Seconds (10.0));
+
+  Config::Connect ("/Names/client/eth0/Rx", MakeCallback (&RxEvent));
+
+  //
+  // Now, do the actual simulation.
+  //
+  NS_LOG_INFO ("Run Simulation.");
+  Simulator::Run ();
+  Simulator::Destroy ();
+  NS_LOG_INFO ("Done.");
+}