A Discrete-Event Network Simulator
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18 #include <string>
19 #include "ns3/core-module.h"
20 #include "ns3/network-module.h"
21 #include "ns3/internet-module.h"
22 #include "ns3/point-to-point-module.h"
23 #include "ns3/mobility-module.h"
24 #include "ns3/applications-module.h"
25 #include "ns3/brite-module.h"
26 #include "ns3/ipv4-nix-vector-helper.h"
27 #include <iostream>
28 #include <fstream>
30 using namespace ns3;
32 NS_LOG_COMPONENT_DEFINE ("BriteExample");
34 int
35 main (int argc, char *argv[])
36 {
37  LogComponentEnable ("UdpEchoClientApplication", LOG_LEVEL_ALL);
38  LogComponentEnable ("UdpEchoServerApplication", LOG_LEVEL_ALL);
40  LogComponentEnable ("BriteExample", LOG_LEVEL_ALL);
42  // BRITE needs a configuration file to build its graph. By default, this
43  // example will use the TD_ASBarabasi_RTWaxman.conf file. There are many others
44  // which can be found in the BRITE/conf_files directory
45  std::string confFile = "src/brite/examples/conf_files/TD_ASBarabasi_RTWaxman.conf";
46  bool tracing = false;
47  bool nix = false;
50  cmd.AddValue ("confFile", "BRITE conf file", confFile);
51  cmd.AddValue ("tracing", "Enable or disable ascii tracing", tracing);
52  cmd.AddValue ("nix", "Enable or disable nix-vector routing", nix);
54  cmd.Parse (argc,argv);
56  nix = false;
58  // Invoke the BriteTopologyHelper and pass in a BRITE
59  // configuration file and a seed file. This will use
60  // BRITE to build a graph from which we can build the ns-3 topology
61  BriteTopologyHelper bth (confFile);
62  bth.AssignStreams (3);
69  if (nix)
70  {
71  Ipv4NixVectorHelper nixRouting;
72  stack.SetRoutingHelper (nixRouting);
73  }
76  address.SetBase ("", "");
78  bth.BuildBriteTopology (stack);
79  bth.AssignIpv4Addresses (address);
81  NS_LOG_INFO ("Number of AS created " << bth.GetNAs ());
83  //The BRITE topology generator generates a topology of routers. Here we create
84  //two subnetworks which we attach to router leaf nodes generated by BRITE
85  //Any NS3 topology may be used to attach to the BRITE leaf nodes but here we
86  //use just one node
88  NodeContainer client;
89  NodeContainer server;
91  client.Create (1);
92  stack.Install (client);
94  //install client node on last leaf node of AS 0
95  int numLeafNodesInAsZero = bth.GetNLeafNodesForAs (0);
96  client.Add (bth.GetLeafNodeForAs (0, numLeafNodesInAsZero - 1));
98  server.Create (1);
99  stack.Install (server);
101  //install server node on last leaf node on AS 1
102  int numLeafNodesInAsOne = bth.GetNLeafNodesForAs (1);
103  server.Add (bth.GetLeafNodeForAs (1, numLeafNodesInAsOne - 1));
105  p2p.SetDeviceAttribute ("DataRate", StringValue ("5Mbps"));
106  p2p.SetChannelAttribute ("Delay", StringValue ("2ms"));
108  NetDeviceContainer p2pClientDevices;
109  NetDeviceContainer p2pServerDevices;
111  p2pClientDevices = p2p.Install (client);
112  p2pServerDevices = p2p.Install (server);
114  address.SetBase ("", "");
115  Ipv4InterfaceContainer clientInterfaces;
116  clientInterfaces = address.Assign (p2pClientDevices);
118  address.SetBase ("", "");
119  Ipv4InterfaceContainer serverInterfaces;
120  serverInterfaces = address.Assign (p2pServerDevices);
123  ApplicationContainer serverApps = echoServer.Install (server.Get (0));
124  serverApps.Start (Seconds (1.0));
125  serverApps.Stop (Seconds (5.0));
127  UdpEchoClientHelper echoClient (serverInterfaces.GetAddress (0), 9);
128  echoClient.SetAttribute ("MaxPackets", UintegerValue (1));
129  echoClient.SetAttribute ("Interval", TimeValue (Seconds (1.)));
130  echoClient.SetAttribute ("PacketSize", UintegerValue (1024));
132  ApplicationContainer clientApps = echoClient.Install (client.Get (0));
133  clientApps.Start (Seconds (2.0));
134  clientApps.Stop (Seconds (5.0));
136  if (!nix)
137  {
139  }
141  if (tracing)
142  {
143  AsciiTraceHelper ascii;
144  p2p.EnableAsciiAll (ascii.CreateFileStream ("briteLeaves.tr"));
145  }
146  // Run the simulator
147  Simulator::Stop (Seconds (6.0));
148  Simulator::Run ();
151  return 0;
152 }
holds a vector of ns3::Application pointers.
Manage ASCII trace files for device models.
Definition: trace-helper.h:161
holds a vector of std::pair of Ptr and interface index.
static void PopulateRoutingTables(void)
Build a routing database and initialize the routing tables of the nodes in the simulation.
Hold variables of type string.
Definition: string.h:41
NetDeviceContainer Install(NodeContainer c)
tuple echoServer
Definition: first.py:43
Create an application which sends a UDP packet and waits for an echo of this packet.
static void Run(void)
Run the simulation.
Definition: simulator.cc:226
Define a Log component with a specific name.
Definition: log.h:201
Helper class that adds Nix-vector routing to nodes.
aggregate IP/TCP/UDP functionality to existing Nodes.
Interface with BRITE, the Boston university Representative Internet Topology gEnerator.
#define NS_LOG_INFO(msg)
Use NS_LOG to output a message of level LOG_INFO.
Definition: log.h:277
Ptr< OutputStreamWrapper > CreateFileStream(std::string filename, std::ios::openmode filemode=std::ios::out)
Create and initialize an output stream object we'll use to write the traced bits. ...
Build a set of PointToPointNetDevice objects.
void SetDeviceAttribute(std::string name, const AttributeValue &value)
Set an attribute value to be propagated to each NetDevice created by the helper.
tuple cmd
Definition: second.py:35
tuple clientApps
Definition: first.py:54
Create a server application which waits for input UDP packets and sends them back to the original sen...
void LogComponentEnable(char const *name, enum LogLevel level)
Enable the logging output associated with that log component.
Definition: log.cc:369
AttributeValue implementation for Time.
Definition: nstime.h:1055
Hold an unsigned integer type.
Definition: uinteger.h:44
holds a vector of ns3::NetDevice pointers
void Start(Time start)
Arrange for all of the Applications in this container to Start() at the Time given as a parameter...
Parse command-line arguments.
Definition: command-line.h:205
static void Destroy(void)
Execute the events scheduled with ScheduleDestroy().
Definition: simulator.cc:190
tuple echoClient
Definition: first.py:49
tuple serverApps
Definition: first.py:45
Every class exported by the ns3 library is enclosed in the ns3 namespace.
keep track of a set of node pointers.
void Install(std::string nodeName) const
Aggregate implementations of the ns3::Ipv4, ns3::Ipv6, ns3::Udp, and ns3::Tcp classes onto the provid...
tuple stack
Definition: first.py:34
void SetChannelAttribute(std::string name, const AttributeValue &value)
Set an attribute value to be propagated to each Channel created by the helper.
void Stop(Time stop)
Arrange for all of the Applications in this container to Stop() at the Time given as a parameter...
Ipv4InterfaceContainer Assign(const NetDeviceContainer &c)
Assign IP addresses to the net devices specified in the container based on the current network prefix...
void Add(NodeContainer other)
Append the contents of another NodeContainer to the end of this container.
void AddValue(const std::string &name, const std::string &help, T &value)
Add a program argument, assigning to POD.
Definition: command-line.h:495
static void Stop(void)
Tell the Simulator the calling event should be the last one executed.
Definition: simulator.cc:234
Ptr< Node > Get(uint32_t i) const
Get the Ptr stored in this container at a given index.
Time Seconds(double value)
Construct a Time in the indicated unit.
Definition: nstime.h:993
Print everything.
Definition: log.h:112
void Parse(int argc, char *argv[])
Parse the program arguments.
A helper class to make life easier while doing simple IPv4 address assignment in scripts.
void EnableAsciiAll(std::string prefix)
Enable ascii trace output on each device (which is of the appropriate type) in the set of all nodes c...
void Create(uint32_t n)
Create n nodes and append pointers to them to the end of this NodeContainer.
tuple address
Definition: first.py:37
void SetRoutingHelper(const Ipv4RoutingHelper &routing)
void SetBase(Ipv4Address network, Ipv4Mask mask, Ipv4Address base="")
Set the base network number, network mask and base address.
Ipv4Address GetAddress(uint32_t i, uint32_t j=0) const