1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
/* -*- 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
// 500 Kbps
// 5 ms
//
// - Flow from n0 to n1 using BulkSendApplication.
// - Tracing of queues and packet receptions to file "tcp-bulk-send.tr"
// and pcap tracing available when tracing is turned on.
#include <string>
#include <fstream>
#include "ns3/core-module.h"
#include "ns3/point-to-point-module.h"
#include "ns3/internet-module.h"
#include "ns3/applications-module.h"
#include "ns3/network-module.h"
#include "ns3/packet-sink.h"
using namespace ns3;
NS_LOG_COMPONENT_DEFINE ("TcpBulkSendExample");
int
main (int argc, char *argv[])
{
bool tracing = false;
uint32_t maxBytes = 0;
//
// Allow the user to override any of the defaults at
// run-time, via command-line arguments
//
CommandLine cmd;
cmd.AddValue ("tracing", "Flag to enable/disable tracing", tracing);
cmd.AddValue ("maxBytes",
"Total number of bytes for application to send", maxBytes);
cmd.Parse (argc, argv);
//
// Explicitly create the nodes required by the topology (shown above).
//
NS_LOG_INFO ("Create nodes.");
NodeContainer nodes;
nodes.Create (2);
NS_LOG_INFO ("Create channels.");
//
// Explicitly create the point-to-point link required by the topology (shown above).
//
PointToPointHelper pointToPoint;
pointToPoint.SetDeviceAttribute ("DataRate", StringValue ("500Kbps"));
pointToPoint.SetChannelAttribute ("Delay", StringValue ("5ms"));
NetDeviceContainer devices;
devices = pointToPoint.Install (nodes);
//
// Install the internet stack on the nodes
//
InternetStackHelper internet;
internet.Install (nodes);
//
// We've got the "hardware" in place. Now we need to add IP addresses.
//
NS_LOG_INFO ("Assign IP Addresses.");
Ipv4AddressHelper ipv4;
ipv4.SetBase ("10.1.1.0", "255.255.255.0");
Ipv4InterfaceContainer i = ipv4.Assign (devices);
NS_LOG_INFO ("Create Applications.");
//
// Create a BulkSendApplication and install it on node 0
//
uint16_t port = 9; // well-known echo port number
BulkSendHelper source ("ns3::TcpSocketFactory",
InetSocketAddress (i.GetAddress (1), port));
// Set the amount of data to send in bytes. Zero is unlimited.
source.SetAttribute ("MaxBytes", UintegerValue (maxBytes));
ApplicationContainer sourceApps = source.Install (nodes.Get (0));
sourceApps.Start (Seconds (0.0));
sourceApps.Stop (Seconds (10.0));
//
// Create a PacketSinkApplication and install it on node 1
//
PacketSinkHelper sink ("ns3::TcpSocketFactory",
InetSocketAddress (Ipv4Address::GetAny (), port));
ApplicationContainer sinkApps = sink.Install (nodes.Get (1));
sinkApps.Start (Seconds (0.0));
sinkApps.Stop (Seconds (10.0));
//
// Set up tracing if enabled
//
if (tracing)
{
AsciiTraceHelper ascii;
pointToPoint.EnableAsciiAll (ascii.CreateFileStream ("tcp-bulk-send.tr"));
pointToPoint.EnablePcapAll ("tcp-bulk-send", false);
}
//
// Now, do the actual simulation.
//
NS_LOG_INFO ("Run Simulation.");
Simulator::Stop (Seconds (10.0));
Simulator::Run ();
Simulator::Destroy ();
NS_LOG_INFO ("Done.");
Ptr<PacketSink> sink1 = DynamicCast<PacketSink> (sinkApps.Get (0));
std::cout << "Total Bytes Received: " << sink1->GetTotalRx () << std::endl;
}
|
