A Discrete-Event Network Simulator
API
tcp-bulk-send.cc
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16 
17 // Network topology
18 //
19 // n0 ----------- n1
20 // 500 Kbps
21 // 5 ms
22 //
23 // - Flow from n0 to n1 using BulkSendApplication.
24 // - Tracing of queues and packet receptions to file "tcp-bulk-send.tr"
25 // and pcap tracing available when tracing is turned on.
26 
27 #include <string>
28 #include <fstream>
29 #include "ns3/core-module.h"
30 #include "ns3/point-to-point-module.h"
31 #include "ns3/internet-module.h"
32 #include "ns3/applications-module.h"
33 #include "ns3/network-module.h"
34 #include "ns3/packet-sink.h"
35 
36 using namespace ns3;
37 
38 NS_LOG_COMPONENT_DEFINE ("TcpBulkSendExample");
39 
40 int
41 main (int argc, char *argv[])
42 {
43 
44  bool tracing = false;
45  uint32_t maxBytes = 0;
46 
47 //
48 // Allow the user to override any of the defaults at
49 // run-time, via command-line arguments
50 //
51  CommandLine cmd (__FILE__);
52  cmd.AddValue ("tracing", "Flag to enable/disable tracing", tracing);
53  cmd.AddValue ("maxBytes",
54  "Total number of bytes for application to send", maxBytes);
55  cmd.Parse (argc, argv);
56 
57 //
58 // Explicitly create the nodes required by the topology (shown above).
59 //
60  NS_LOG_INFO ("Create nodes.");
62  nodes.Create (2);
63 
64  NS_LOG_INFO ("Create channels.");
65 
66 //
67 // Explicitly create the point-to-point link required by the topology (shown above).
68 //
70  pointToPoint.SetDeviceAttribute ("DataRate", StringValue ("500Kbps"));
71  pointToPoint.SetChannelAttribute ("Delay", StringValue ("5ms"));
72 
74  devices = pointToPoint.Install (nodes);
75 
76 //
77 // Install the internet stack on the nodes
78 //
79  InternetStackHelper internet;
80  internet.Install (nodes);
81 
82 //
83 // We've got the "hardware" in place. Now we need to add IP addresses.
84 //
85  NS_LOG_INFO ("Assign IP Addresses.");
86  Ipv4AddressHelper ipv4;
87  ipv4.SetBase ("10.1.1.0", "255.255.255.0");
89 
90  NS_LOG_INFO ("Create Applications.");
91 
92 //
93 // Create a BulkSendApplication and install it on node 0
94 //
95  uint16_t port = 9; // well-known echo port number
96 
97 
98  BulkSendHelper source ("ns3::TcpSocketFactory",
100  // Set the amount of data to send in bytes. Zero is unlimited.
101  source.SetAttribute ("MaxBytes", UintegerValue (maxBytes));
102  ApplicationContainer sourceApps = source.Install (nodes.Get (0));
103  sourceApps.Start (Seconds (0.0));
104  sourceApps.Stop (Seconds (10.0));
105 
106 //
107 // Create a PacketSinkApplication and install it on node 1
108 //
109  PacketSinkHelper sink ("ns3::TcpSocketFactory",
111  ApplicationContainer sinkApps = sink.Install (nodes.Get (1));
112  sinkApps.Start (Seconds (0.0));
113  sinkApps.Stop (Seconds (10.0));
114 
115 //
116 // Set up tracing if enabled
117 //
118  if (tracing)
119  {
120  AsciiTraceHelper ascii;
121  pointToPoint.EnableAsciiAll (ascii.CreateFileStream ("tcp-bulk-send.tr"));
122  pointToPoint.EnablePcapAll ("tcp-bulk-send", false);
123  }
124 
125 //
126 // Now, do the actual simulation.
127 //
128  NS_LOG_INFO ("Run Simulation.");
129  Simulator::Stop (Seconds (10.0));
130  Simulator::Run ();
132  NS_LOG_INFO ("Done.");
133 
134  Ptr<PacketSink> sink1 = DynamicCast<PacketSink> (sinkApps.Get (0));
135  std::cout << "Total Bytes Received: " << sink1->GetTotalRx () << std::endl;
136 }
holds a vector of ns3::Application pointers.
Ptr< Application > Get(uint32_t i) const
Get the Ptr<Application> stored in this container at a given index.
void Start(Time start)
Arrange for all of the Applications in this container to Start() at the Time given as a parameter.
void Stop(Time stop)
Arrange for all of the Applications in this container to Stop() at the Time given as a parameter.
Manage ASCII trace files for device models.
Definition: trace-helper.h:163
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.
A helper to make it easier to instantiate an ns3::BulkSendApplication on a set of nodes.
Parse command-line arguments.
Definition: command-line.h:229
an Inet address class
aggregate IP/TCP/UDP functionality to existing Nodes.
void Install(std::string nodeName) const
Aggregate implementations of the ns3::Ipv4, ns3::Ipv6, ns3::Udp, and ns3::Tcp classes onto the provid...
A helper class to make life easier while doing simple IPv4 address assignment in scripts.
void SetBase(Ipv4Address network, Ipv4Mask mask, Ipv4Address base="0.0.0.1")
Set the base network number, network mask and base address.
Ipv4InterfaceContainer Assign(const NetDeviceContainer &c)
Assign IP addresses to the net devices specified in the container based on the current network prefix...
static Ipv4Address GetAny(void)
holds a vector of std::pair of Ptr<Ipv4> and interface index.
Ipv4Address GetAddress(uint32_t i, uint32_t j=0) const
holds a vector of ns3::NetDevice pointers
keep track of a set of node pointers.
A helper to make it easier to instantiate an ns3::PacketSinkApplication on a set of nodes.
uint64_t GetTotalRx() const
Definition: packet-sink.cc:93
Build a set of PointToPointNetDevice objects.
static void Stop(void)
Tell the Simulator the calling event should be the last one executed.
Definition: simulator.cc:180
static void Destroy(void)
Execute the events scheduled with ScheduleDestroy().
Definition: simulator.cc:136
static void Run(void)
Run the simulation.
Definition: simulator.cc:172
Hold variables of type string.
Definition: string.h:41
Hold an unsigned integer type.
Definition: uinteger.h:44
uint16_t port
Definition: dsdv-manet.cc:45
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
Definition: log.h:205
#define NS_LOG_INFO(msg)
Use NS_LOG to output a message of level LOG_INFO.
Definition: log.h:281
Time Seconds(double value)
Construct a Time in the indicated unit.
Definition: nstime.h:1244
pointToPoint
Definition: first.py:35
devices
Definition: first.py:39
nodes
Definition: first.py:32
Every class exported by the ns3 library is enclosed in the ns3 namespace.
cmd
Definition: second.py:35
bool tracing
Flag to enable/disable generation of tracing files.
Definition: wifi-bianchi.cc:88
Ptr< PacketSink > sink
Definition: wifi-tcp.cc:56