145 lines
4.3 KiB
C++
145 lines
4.3 KiB
C++
/*
|
|
* SPDX-License-Identifier: GPL-2.0-only
|
|
*/
|
|
|
|
// ============================================================ //
|
|
// BASED ON tcp-bulk-send.cc //
|
|
// ============================================================ //
|
|
|
|
// Network topology
|
|
//
|
|
// n0 ----------- n1
|
|
// 500 Kbps
|
|
// 5 ms
|
|
//
|
|
// - Flow from n0 to n1 using BulkSendApplication.
|
|
// - Tracing of queues and packet receptions to file "tcp-pcap-nanosec-example.pcap"
|
|
// when tracing is turned on.
|
|
// - Trace file timestamps are recorded in nanoseconds, when requested
|
|
//
|
|
|
|
// ============================================================ //
|
|
// NOTE: You can check the "magic" number of a pcap file with //
|
|
// the following command: //
|
|
// //
|
|
// od -N4 -tx1 filename.pcap //
|
|
// //
|
|
// ============================================================ //
|
|
|
|
#include "ns3/applications-module.h"
|
|
#include "ns3/core-module.h"
|
|
#include "ns3/internet-module.h"
|
|
#include "ns3/network-module.h"
|
|
#include "ns3/point-to-point-module.h"
|
|
|
|
#include <fstream>
|
|
#include <string>
|
|
|
|
using namespace ns3;
|
|
|
|
NS_LOG_COMPONENT_DEFINE("TcpPcapNanosecExample");
|
|
|
|
int
|
|
main(int argc, char* argv[])
|
|
{
|
|
bool tracing = false;
|
|
bool nanosec = false;
|
|
uint32_t maxBytes = 0;
|
|
|
|
//
|
|
// Allow the user to override any of the defaults at
|
|
// run-time, via command-line arguments
|
|
//
|
|
CommandLine cmd(__FILE__);
|
|
cmd.AddValue("tracing", "Flag to enable tracing", tracing);
|
|
cmd.AddValue("nanosec", "Flag to use nanosecond timestamps for pcap as default", nanosec);
|
|
cmd.AddValue("maxBytes", "Total number of bytes for application to send", maxBytes);
|
|
cmd.Parse(argc, argv);
|
|
|
|
//
|
|
// If requested via the --nanosec cmdline flag, generate nanosecond timestamp for pcap traces
|
|
//
|
|
if (nanosec)
|
|
{
|
|
Config::SetDefault("ns3::PcapFileWrapper::NanosecMode", BooleanValue(true));
|
|
}
|
|
|
|
//
|
|
// 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));
|
|
sourceApps.Stop(Seconds(10));
|
|
|
|
//
|
|
// 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));
|
|
sinkApps.Stop(Seconds(10));
|
|
|
|
//
|
|
// Set up tracing if enabled
|
|
//
|
|
if (tracing)
|
|
{
|
|
AsciiTraceHelper ascii;
|
|
pointToPoint.EnablePcapAll("tcp-pcap-nanosec-example", false);
|
|
}
|
|
|
|
//
|
|
// Now, do the actual simulation.
|
|
//
|
|
NS_LOG_INFO("Run Simulation.");
|
|
Simulator::Stop(Seconds(10));
|
|
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;
|
|
|
|
return 0;
|
|
}
|