1#include "ns3/core-module.h"
2#include "ns3/network-module.h"
3#include "ns3/internet-module.h"
4#include "ns3/point-to-point-module.h"
5#include "ns3/applications-module.h"
6
7using namespace ns3;
8
9NS_LOG_COMPONENT_DEFINE("FirstScriptExample");
10
11int main(int argc, char *argv[]) {
12    CommandLine cmd;
13    cmd.Parse(argc, argv);
14
15    Time::SetResolution(Time::NS);
16    LogComponentEnable("UdpEchoClientApplication", LOG_LEVEL_INFO);
17    LogComponentEnable("UdpEchoServerApplication", LOG_LEVEL_INFO);
18
19    // Create 2 nodes
20    NodeContainer nodes;
21    nodes.Create(2);
22
23    // Configure point-to-point link
24    PointToPointHelper pointToPoint;
25    pointToPoint.SetDeviceAttribute("DataRate", StringValue("5Mbps"));
26    pointToPoint.SetChannelAttribute("Delay", StringValue("2ms"));
27
28    // Install devices
29    NetDeviceContainer devices;
30    devices = pointToPoint.Install(nodes);
31
32    // Install Internet stack
33    InternetStackHelper stack;
34    stack.Install(nodes);
35
36    // Assign IP addresses
37    Ipv4AddressHelper address;
38    address.SetBase("10.1.1.0", "255.255.255.0");
39    Ipv4InterfaceContainer interfaces = address.Assign(devices);
40
41    // Setup UDP Echo Server on Node 1
42    UdpEchoServerHelper echoServer(9);
43    ApplicationContainer serverApps = echoServer.Install(nodes.Get(1));
44    serverApps.Start(Seconds(1.0));
45    serverApps.Stop(Seconds(10.0));
46
47    // Setup UDP Echo Client on Node 0
48    UdpEchoClientHelper echoClient(interfaces.GetAddress(1), 9);
49    echoClient.SetAttribute("MaxPackets", UintegerValue(1));
50    echoClient.SetAttribute("Interval", TimeValue(Seconds(1.0)));
51    echoClient.SetAttribute("PacketSize", UintegerValue(1024));
52
53    ApplicationContainer clientApps = echoClient.Install(nodes.Get(0));
54    clientApps.Start(Seconds(2.0));
55    clientApps.Stop(Seconds(10.0));
56
57    Simulator::Run();
58    Simulator::Destroy();
59    return 0;
60}

1At time +2s client sent 1024 bytes to 10.1.1.2 port 9
2At time +2.00369s server received 1024 bytes from 10.1.1.1 port 49153
3At time +2.00369s server sent 1024 bytes to 10.1.1.1 port 49153
4At time +2.00737s client received 1024 bytes from 10.1.1.2 port 9

1#include "ns3/core-module.h"
2#include "ns3/network-module.h"
3#include "ns3/internet-module.h"
4#include "ns3/wifi-module.h"
5#include "ns3/mobility-module.h"
6#include "ns3/applications-module.h"
7#include "ns3/point-to-point-module.h"
8
9using namespace ns3;
10
11NS_LOG_COMPONENT_DEFINE("WirelessExample");
12
13int main(int argc, char *argv[]) {
14    uint32_t nWifi = 3;
15    CommandLine cmd;
16    cmd.AddValue("nWifi", "Number of wifi STA devices", nWifi);
17    cmd.Parse(argc, argv);
18
19    // Create P2P nodes (wired backbone)
20    NodeContainer p2pNodes;
21    p2pNodes.Create(2);
22
23    PointToPointHelper pointToPoint;
24    pointToPoint.SetDeviceAttribute("DataRate", StringValue("5Mbps"));
25    pointToPoint.SetChannelAttribute("Delay", StringValue("2ms"));
26    NetDeviceContainer p2pDevices = pointToPoint.Install(p2pNodes);
27
28    // Create WiFi station nodes
29    NodeContainer wifiStaNodes;
30    wifiStaNodes.Create(nWifi);
31    NodeContainer wifiApNode = p2pNodes.Get(0); // AP is P2P node 0
32
33    // Configure WiFi channel and PHY
34    YansWifiChannelHelper channel = YansWifiChannelHelper::Default();
35    YansWifiPhyHelper phy;
36    phy.SetChannel(channel.Create());
37
38    // Configure WiFi MAC
39    WifiHelper wifi;
40    WifiMacHelper mac;
41    Ssid ssid = Ssid("ns-3-ssid");
42
43    // STA devices
44    mac.SetType("ns3::StaWifiMac",
45                "Ssid", SsidValue(ssid),
46                "ActiveProbing", BooleanValue(false));
47    NetDeviceContainer staDevices = wifi.Install(phy, mac, wifiStaNodes);
48
49    // AP device
50    mac.SetType("ns3::ApWifiMac",
51                "Ssid", SsidValue(ssid));
52    NetDeviceContainer apDevices = wifi.Install(phy, mac, wifiApNode);
53
54    // Mobility
55    MobilityHelper mobility;
56    mobility.SetPositionAllocator("ns3::GridPositionAllocator",
57        "MinX", DoubleValue(0.0),
58        "MinY", DoubleValue(0.0),
59        "DeltaX", DoubleValue(5.0),
60        "DeltaY", DoubleValue(10.0),
61        "GridWidth", UintegerValue(3),
62        "LayoutType", StringValue("RowFirst"));
63
64    mobility.SetMobilityModel("ns3::RandomWalk2dMobilityModel",
65        "Bounds", RectangleValue(Rectangle(-50, 50, -50, 50)));
66    mobility.Install(wifiStaNodes);
67
68    mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
69    mobility.Install(wifiApNode);
70
71    // Internet stack
72    InternetStackHelper stack;
73    stack.Install(p2pNodes.Get(1));
74    stack.Install(wifiStaNodes);
75    stack.Install(wifiApNode);
76
77    // IP addresses
78    Ipv4AddressHelper address;
79    address.SetBase("10.1.1.0", "255.255.255.0");
80    address.Assign(p2pDevices);
81
82    address.SetBase("10.1.2.0", "255.255.255.0");
83    Ipv4InterfaceContainer wifiInterfaces;
84    wifiInterfaces = address.Assign(staDevices);
85    address.Assign(apDevices);
86
87    // Applications (similar to Example 1)
88    UdpEchoServerHelper echoServer(9);
89    ApplicationContainer serverApps = echoServer.Install(p2pNodes.Get(1));
90    serverApps.Start(Seconds(1.0));
91    serverApps.Stop(Seconds(10.0));
92
93    UdpEchoClientHelper echoClient(
94        p2pNodes.Get(1)->GetObject<Ipv4>()->GetAddress(1, 0).GetLocal(), 9);
95    echoClient.SetAttribute("MaxPackets", UintegerValue(1));
96    echoClient.SetAttribute("Interval", TimeValue(Seconds(1.0)));
97    echoClient.SetAttribute("PacketSize", UintegerValue(1024));
98
99    ApplicationContainer clientApps = echoClient.Install(wifiStaNodes.Get(nWifi - 1));
100    clientApps.Start(Seconds(2.0));
101    clientApps.Stop(Seconds(10.0));
102
103    Ipv4GlobalRoutingHelper::PopulateRoutingTables();
104
105    Simulator::Stop(Seconds(10.0));
106    Simulator::Run();
107    Simulator::Destroy();
108    return 0;
109}