A Discrete-Event Network Simulator
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udp-client-server.cc
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * This program is free software; you can redistribute it and/or modify
4  * it under the terms of the GNU General Public License version 2 as
5  * published by the Free Software Foundation;
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7  * This program is distributed in the hope that it will be useful,
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9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10  * GNU General Public License for more details.
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15  */
16 
17 // Network topology
18 //
19 // n0 n1
20 // | |
21 // =======
22 // LAN
23 //
24 // - UDP flows from n0 to n1
25 
26 #include <fstream>
27 #include "ns3/core-module.h"
28 #include "ns3/core-module.h"
29 #include "ns3/csma-module.h"
30 #include "ns3/applications-module.h"
31 #include "ns3/internet-module.h"
32 
33 using namespace ns3;
34 
35 NS_LOG_COMPONENT_DEFINE ("UdpClientServerExample");
36 
37 int
38 main (int argc, char *argv[])
39 {
40 //
41 // Enable logging for UdpClient and
42 //
43  LogComponentEnable ("UdpClient", LOG_LEVEL_INFO);
44  LogComponentEnable ("UdpServer", LOG_LEVEL_INFO);
45 
46  bool useV6 = false;
47  Address serverAddress;
48 
49  CommandLine cmd;
50  cmd.AddValue ("useIpv6", "Use Ipv6", useV6);
51  cmd.Parse (argc, argv);
52 
53 //
54 // Explicitly create the nodes required by the topology (shown above).
55 //
56  NS_LOG_INFO ("Create nodes.");
57  NodeContainer n;
58  n.Create (2);
59 
60  InternetStackHelper internet;
61  internet.Install (n);
62 
63  NS_LOG_INFO ("Create channels.");
64 //
65 // Explicitly create the channels required by the topology (shown above).
66 //
67  CsmaHelper csma;
68  csma.SetChannelAttribute ("DataRate", DataRateValue (DataRate (5000000)));
69  csma.SetChannelAttribute ("Delay", TimeValue (MilliSeconds (2)));
70  csma.SetDeviceAttribute ("Mtu", UintegerValue (1400));
71  NetDeviceContainer d = csma.Install (n);
72 
73 //
74 // We've got the "hardware" in place. Now we need to add IP addresses.
75 //
76  NS_LOG_INFO ("Assign IP Addresses.");
77  if (useV6 == false)
78  {
79  Ipv4AddressHelper ipv4;
80  ipv4.SetBase ("10.1.1.0", "255.255.255.0");
81  Ipv4InterfaceContainer i = ipv4.Assign (d);
82  serverAddress = Address (i.GetAddress (1));
83  }
84  else
85  {
86  Ipv6AddressHelper ipv6;
87  ipv6.SetBase ("2001:0000:f00d:cafe::", Ipv6Prefix (64));
88  Ipv6InterfaceContainer i6 = ipv6.Assign (d);
89  serverAddress = Address(i6.GetAddress (1,1));
90  }
91 
92  NS_LOG_INFO ("Create Applications.");
93 //
94 // Create one udpServer applications on node one.
95 //
96  uint16_t port = 4000;
97  UdpServerHelper server (port);
98  ApplicationContainer apps = server.Install (n.Get (1));
99  apps.Start (Seconds (1.0));
100  apps.Stop (Seconds (10.0));
101 
102 //
103 // Create one UdpClient application to send UDP datagrams from node zero to
104 // node one.
105 //
106  uint32_t MaxPacketSize = 1024;
107  Time interPacketInterval = Seconds (0.05);
108  uint32_t maxPacketCount = 320;
109  UdpClientHelper client (serverAddress, port);
110  client.SetAttribute ("MaxPackets", UintegerValue (maxPacketCount));
111  client.SetAttribute ("Interval", TimeValue (interPacketInterval));
112  client.SetAttribute ("PacketSize", UintegerValue (MaxPacketSize));
113  apps = client.Install (n.Get (0));
114  apps.Start (Seconds (2.0));
115  apps.Stop (Seconds (10.0));
116 
117 //
118 // Now, do the actual simulation.
119 //
120  NS_LOG_INFO ("Run Simulation.");
121  Simulator::Run ();
122  Simulator::Destroy ();
123  NS_LOG_INFO ("Done.");
124 }