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unison/examples/tcp/tcp-variants-comparison.cc
Tommaso Pecorella d5ca973afb examples: Clarify variable names in tcp-variants-comparison.cc
2022-03-21 13:50:10 -07:00

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
* Copyright (c) 2013 ResiliNets, ITTC, University of Kansas
*
* 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
*
* Authors: Justin P. Rohrer, Truc Anh N. Nguyen <annguyen@ittc.ku.edu>, Siddharth Gangadhar <siddharth@ittc.ku.edu>
*
* James P.G. Sterbenz <jpgs@ittc.ku.edu>, director
* ResiliNets Research Group http://wiki.ittc.ku.edu/resilinets
* Information and Telecommunication Technology Center (ITTC)
* and Department of Electrical Engineering and Computer Science
* The University of Kansas Lawrence, KS USA.
*
* Work supported in part by NSF FIND (Future Internet Design) Program
* under grant CNS-0626918 (Postmodern Internet Architecture),
* NSF grant CNS-1050226 (Multilayer Network Resilience Analysis and Experimentation on GENI),
* US Department of Defense (DoD), and ITTC at The University of Kansas.
*
* “TCP Westwood(+) Protocol Implementation in ns-3”
* Siddharth Gangadhar, Trúc Anh Ngọc Nguyễn , Greeshma Umapathi, and James P.G. Sterbenz,
* ICST SIMUTools Workshop on ns-3 (WNS3), Cannes, France, March 2013
*/
#include <iostream>
#include <fstream>
#include <string>
#include "ns3/core-module.h"
#include "ns3/network-module.h"
#include "ns3/internet-module.h"
#include "ns3/point-to-point-module.h"
#include "ns3/applications-module.h"
#include "ns3/error-model.h"
#include "ns3/tcp-header.h"
#include "ns3/udp-header.h"
#include "ns3/enum.h"
#include "ns3/event-id.h"
#include "ns3/flow-monitor-helper.h"
#include "ns3/ipv4-global-routing-helper.h"
#include "ns3/traffic-control-module.h"
using namespace ns3;
NS_LOG_COMPONENT_DEFINE ("TcpVariantsComparison");
static std::map<uint32_t, bool> firstCwnd;
static std::map<uint32_t, bool> firstSshThr;
static std::map<uint32_t, bool> firstRtt;
static std::map<uint32_t, bool> firstRto;
static std::map<uint32_t, Ptr<OutputStreamWrapper>> cWndStream;
static std::map<uint32_t, Ptr<OutputStreamWrapper>> ssThreshStream;
static std::map<uint32_t, Ptr<OutputStreamWrapper>> rttStream;
static std::map<uint32_t, Ptr<OutputStreamWrapper>> rtoStream;
static std::map<uint32_t, Ptr<OutputStreamWrapper>> nextTxStream;
static std::map<uint32_t, Ptr<OutputStreamWrapper>> nextRxStream;
static std::map<uint32_t, Ptr<OutputStreamWrapper>> inFlightStream;
static std::map<uint32_t, uint32_t> cWndValue;
static std::map<uint32_t, uint32_t> ssThreshValue;
static uint32_t
GetNodeIdFromContext (std::string context)
{
std::size_t const n1 = context.find_first_of ("/", 1);
std::size_t const n2 = context.find_first_of ("/", n1 + 1);
return std::stoul (context.substr (n1 + 1, n2 - n1 - 1));
}
static void
CwndTracer (std::string context, uint32_t oldval, uint32_t newval)
{
uint32_t nodeId = GetNodeIdFromContext (context);
if (firstCwnd[nodeId])
{
*cWndStream[nodeId]->GetStream () << "0.0 " << oldval << std::endl;
firstCwnd[nodeId] = false;
}
*cWndStream[nodeId]->GetStream () << Simulator::Now ().GetSeconds () << " " << newval << std::endl;
cWndValue[nodeId] = newval;
if (!firstSshThr[nodeId])
{
*ssThreshStream[nodeId]->GetStream ()
<< Simulator::Now ().GetSeconds () << " " << ssThreshValue[nodeId] << std::endl;
}
}
static void
SsThreshTracer (std::string context, uint32_t oldval, uint32_t newval)
{
uint32_t nodeId = GetNodeIdFromContext (context);
if (firstSshThr[nodeId])
{
*ssThreshStream[nodeId]->GetStream () << "0.0 " << oldval << std::endl;
firstSshThr[nodeId] = false;
}
*ssThreshStream[nodeId]->GetStream () << Simulator::Now ().GetSeconds () << " " << newval << std::endl;
ssThreshValue[nodeId] = newval;
if (!firstCwnd[nodeId])
{
*cWndStream[nodeId]->GetStream () << Simulator::Now ().GetSeconds () << " " << cWndValue[nodeId] << std::endl;
}
}
static void
RttTracer (std::string context, Time oldval, Time newval)
{
uint32_t nodeId = GetNodeIdFromContext (context);
if (firstRtt[nodeId])
{
*rttStream[nodeId]->GetStream () << "0.0 " << oldval.GetSeconds () << std::endl;
firstRtt[nodeId] = false;
}
*rttStream[nodeId]->GetStream () << Simulator::Now ().GetSeconds () << " " << newval.GetSeconds () << std::endl;
}
static void
RtoTracer (std::string context, Time oldval, Time newval)
{
uint32_t nodeId = GetNodeIdFromContext (context);
if (firstRto[nodeId])
{
*rtoStream[nodeId]->GetStream () << "0.0 " << oldval.GetSeconds () << std::endl;
firstRto[nodeId] = false;
}
*rtoStream[nodeId]->GetStream () << Simulator::Now ().GetSeconds () << " " << newval.GetSeconds () << std::endl;
}
static void
NextTxTracer (std::string context, [[maybe_unused]] SequenceNumber32 old, SequenceNumber32 nextTx)
{
uint32_t nodeId = GetNodeIdFromContext (context);
*nextTxStream[nodeId]->GetStream () << Simulator::Now ().GetSeconds () << " " << nextTx << std::endl;
}
static void
InFlightTracer (std::string context, [[maybe_unused]] uint32_t old, uint32_t inFlight)
{
uint32_t nodeId = GetNodeIdFromContext (context);
*inFlightStream[nodeId]->GetStream () << Simulator::Now ().GetSeconds () << " " << inFlight << std::endl;
}
static void
NextRxTracer (std::string context, [[maybe_unused]] SequenceNumber32 old, SequenceNumber32 nextRx)
{
uint32_t nodeId = GetNodeIdFromContext (context);
*nextRxStream[nodeId]->GetStream () << Simulator::Now ().GetSeconds () << " " << nextRx << std::endl;
}
static void
TraceCwnd (std::string cwnd_tr_file_name, uint32_t nodeId)
{
AsciiTraceHelper ascii;
cWndStream[nodeId] = ascii.CreateFileStream (cwnd_tr_file_name.c_str ());
Config::Connect ("/NodeList/" + std::to_string (nodeId) + "/$ns3::TcpL4Protocol/SocketList/0/CongestionWindow",
MakeCallback (&CwndTracer));
}
static void
TraceSsThresh (std::string ssthresh_tr_file_name, uint32_t nodeId)
{
AsciiTraceHelper ascii;
ssThreshStream[nodeId] = ascii.CreateFileStream (ssthresh_tr_file_name.c_str ());
Config::Connect ("/NodeList/" + std::to_string (nodeId) + "/$ns3::TcpL4Protocol/SocketList/0/SlowStartThreshold",
MakeCallback (&SsThreshTracer));
}
static void
TraceRtt (std::string rtt_tr_file_name, uint32_t nodeId)
{
AsciiTraceHelper ascii;
rttStream[nodeId] = ascii.CreateFileStream (rtt_tr_file_name.c_str ());
Config::Connect ("/NodeList/" + std::to_string (nodeId) + "/$ns3::TcpL4Protocol/SocketList/0/RTT",
MakeCallback (&RttTracer));
}
static void
TraceRto (std::string rto_tr_file_name, uint32_t nodeId)
{
AsciiTraceHelper ascii;
rtoStream[nodeId] = ascii.CreateFileStream (rto_tr_file_name.c_str ());
Config::Connect ("/NodeList/" + std::to_string (nodeId) + "/$ns3::TcpL4Protocol/SocketList/0/RTO",
MakeCallback (&RtoTracer));
}
static void
TraceNextTx (std::string &next_tx_seq_file_name, uint32_t nodeId)
{
AsciiTraceHelper ascii;
nextTxStream[nodeId] = ascii.CreateFileStream (next_tx_seq_file_name.c_str ());
Config::Connect ("/NodeList/" + std::to_string (nodeId) + "/$ns3::TcpL4Protocol/SocketList/0/NextTxSequence",
MakeCallback (&NextTxTracer));
}
static void
TraceInFlight (std::string &in_flight_file_name, uint32_t nodeId)
{
AsciiTraceHelper ascii;
inFlightStream[nodeId] = ascii.CreateFileStream (in_flight_file_name.c_str ());
Config::Connect ("/NodeList/" + std::to_string (nodeId) + "/$ns3::TcpL4Protocol/SocketList/0/BytesInFlight",
MakeCallback (&InFlightTracer));
}
static void
TraceNextRx (std::string &next_rx_seq_file_name, uint32_t nodeId)
{
AsciiTraceHelper ascii;
nextRxStream[nodeId] = ascii.CreateFileStream (next_rx_seq_file_name.c_str ());
Config::Connect ("/NodeList/" + std::to_string (nodeId) +
"/$ns3::TcpL4Protocol/SocketList/1/RxBuffer/NextRxSequence",
MakeCallback (&NextRxTracer));
}
int main (int argc, char *argv[])
{
std::string transport_prot = "TcpWestwood";
double error_p = 0.0;
std::string bandwidth = "2Mbps";
std::string delay = "0.01ms";
std::string access_bandwidth = "10Mbps";
std::string access_delay = "45ms";
bool tracing = false;
std::string prefix_file_name = "TcpVariantsComparison";
uint64_t data_mbytes = 0;
uint32_t mtu_bytes = 400;
uint16_t num_flows = 1;
double duration = 100.0;
uint32_t run = 0;
bool flow_monitor = false;
bool pcap = false;
bool sack = true;
std::string queue_disc_type = "ns3::PfifoFastQueueDisc";
std::string recovery = "ns3::TcpClassicRecovery";
CommandLine cmd (__FILE__);
cmd.AddValue ("transport_prot", "Transport protocol to use: TcpNewReno, TcpLinuxReno, "
"TcpHybla, TcpHighSpeed, TcpHtcp, TcpVegas, TcpScalable, TcpVeno, "
"TcpBic, TcpYeah, TcpIllinois, TcpWestwood, TcpWestwoodPlus, TcpLedbat, "
"TcpLp, TcpDctcp, TcpCubic, TcpBbr", transport_prot);
cmd.AddValue ("error_p", "Packet error rate", error_p);
cmd.AddValue ("bandwidth", "Bottleneck bandwidth", bandwidth);
cmd.AddValue ("delay", "Bottleneck delay", delay);
cmd.AddValue ("access_bandwidth", "Access link bandwidth", access_bandwidth);
cmd.AddValue ("access_delay", "Access link delay", access_delay);
cmd.AddValue ("tracing", "Flag to enable/disable tracing", tracing);
cmd.AddValue ("prefix_name", "Prefix of output trace file", prefix_file_name);
cmd.AddValue ("data", "Number of Megabytes of data to transmit", data_mbytes);
cmd.AddValue ("mtu", "Size of IP packets to send in bytes", mtu_bytes);
cmd.AddValue ("num_flows", "Number of flows", num_flows);
cmd.AddValue ("duration", "Time to allow flows to run in seconds", duration);
cmd.AddValue ("run", "Run index (for setting repeatable seeds)", run);
cmd.AddValue ("flow_monitor", "Enable flow monitor", flow_monitor);
cmd.AddValue ("pcap_tracing", "Enable or disable PCAP tracing", pcap);
cmd.AddValue ("queue_disc_type", "Queue disc type for gateway (e.g. ns3::CoDelQueueDisc)", queue_disc_type);
cmd.AddValue ("sack", "Enable or disable SACK option", sack);
cmd.AddValue ("recovery", "Recovery algorithm type to use (e.g., ns3::TcpPrrRecovery", recovery);
cmd.Parse (argc, argv);
transport_prot = std::string ("ns3::") + transport_prot;
SeedManager::SetSeed (1);
SeedManager::SetRun (run);
// User may find it convenient to enable logging
//LogComponentEnable("TcpVariantsComparison", LOG_LEVEL_ALL);
//LogComponentEnable("BulkSendApplication", LOG_LEVEL_INFO);
//LogComponentEnable("PfifoFastQueueDisc", LOG_LEVEL_ALL);
// Calculate the ADU size
Header* temp_header = new Ipv4Header ();
uint32_t ip_header = temp_header->GetSerializedSize ();
NS_LOG_LOGIC ("IP Header size is: " << ip_header);
delete temp_header;
temp_header = new TcpHeader ();
uint32_t tcp_header = temp_header->GetSerializedSize ();
NS_LOG_LOGIC ("TCP Header size is: " << tcp_header);
delete temp_header;
uint32_t tcp_adu_size = mtu_bytes - 20 - (ip_header + tcp_header);
NS_LOG_LOGIC ("TCP ADU size is: " << tcp_adu_size);
// Set the simulation start and stop time
double start_time = 0.1;
double stop_time = start_time + duration;
// 2 MB of TCP buffer
Config::SetDefault ("ns3::TcpSocket::RcvBufSize", UintegerValue (1 << 21));
Config::SetDefault ("ns3::TcpSocket::SndBufSize", UintegerValue (1 << 21));
Config::SetDefault ("ns3::TcpSocketBase::Sack", BooleanValue (sack));
Config::SetDefault ("ns3::TcpL4Protocol::RecoveryType",
TypeIdValue (TypeId::LookupByName (recovery)));
// Select TCP variant
if (transport_prot.compare ("ns3::TcpWestwoodPlus") == 0)
{
// TcpWestwoodPlus is not an actual TypeId name; we need TcpWestwood here
Config::SetDefault ("ns3::TcpL4Protocol::SocketType", TypeIdValue (TcpWestwood::GetTypeId ()));
// the default protocol type in ns3::TcpWestwood is WESTWOOD
Config::SetDefault ("ns3::TcpWestwood::ProtocolType", EnumValue (TcpWestwood::WESTWOODPLUS));
}
else
{
TypeId tcpTid;
NS_ABORT_MSG_UNLESS (TypeId::LookupByNameFailSafe (transport_prot, &tcpTid), "TypeId " << transport_prot << " not found");
Config::SetDefault ("ns3::TcpL4Protocol::SocketType", TypeIdValue (TypeId::LookupByName (transport_prot)));
}
// Create gateways, sources, and sinks
NodeContainer gateways;
gateways.Create (1);
NodeContainer sources;
sources.Create (num_flows);
NodeContainer sinks;
sinks.Create (num_flows);
// Configure the error model
// Here we use RateErrorModel with packet error rate
Ptr<UniformRandomVariable> uv = CreateObject<UniformRandomVariable> ();
uv->SetStream (50);
RateErrorModel error_model;
error_model.SetRandomVariable (uv);
error_model.SetUnit (RateErrorModel::ERROR_UNIT_PACKET);
error_model.SetRate (error_p);
PointToPointHelper UnReLink;
UnReLink.SetDeviceAttribute ("DataRate", StringValue (bandwidth));
UnReLink.SetChannelAttribute ("Delay", StringValue (delay));
UnReLink.SetDeviceAttribute ("ReceiveErrorModel", PointerValue (&error_model));
InternetStackHelper stack;
stack.InstallAll ();
TrafficControlHelper tchPfifo;
tchPfifo.SetRootQueueDisc ("ns3::PfifoFastQueueDisc");
TrafficControlHelper tchCoDel;
tchCoDel.SetRootQueueDisc ("ns3::CoDelQueueDisc");
Ipv4AddressHelper address;
address.SetBase ("10.0.0.0", "255.255.255.0");
// Configure the sources and sinks net devices
// and the channels between the sources/sinks and the gateways
PointToPointHelper LocalLink;
LocalLink.SetDeviceAttribute ("DataRate", StringValue (access_bandwidth));
LocalLink.SetChannelAttribute ("Delay", StringValue (access_delay));
Ipv4InterfaceContainer sink_interfaces;
DataRate access_b (access_bandwidth);
DataRate bottle_b (bandwidth);
Time access_d (access_delay);
Time bottle_d (delay);
uint32_t size = static_cast<uint32_t>((std::min (access_b, bottle_b).GetBitRate () / 8) *
((access_d + bottle_d) * 2).GetSeconds ());
Config::SetDefault ("ns3::PfifoFastQueueDisc::MaxSize",
QueueSizeValue (QueueSize (QueueSizeUnit::PACKETS, size / mtu_bytes)));
Config::SetDefault ("ns3::CoDelQueueDisc::MaxSize",
QueueSizeValue (QueueSize (QueueSizeUnit::BYTES, size)));
for (uint32_t i = 0; i < num_flows; i++)
{
NetDeviceContainer devices;
devices = LocalLink.Install (sources.Get (i), gateways.Get (0));
tchPfifo.Install (devices);
address.NewNetwork ();
Ipv4InterfaceContainer interfaces = address.Assign (devices);
devices = UnReLink.Install (gateways.Get (0), sinks.Get (i));
if (queue_disc_type.compare ("ns3::PfifoFastQueueDisc") == 0)
{
tchPfifo.Install (devices);
}
else if (queue_disc_type.compare ("ns3::CoDelQueueDisc") == 0)
{
tchCoDel.Install (devices);
}
else
{
NS_FATAL_ERROR ("Queue not recognized. Allowed values are ns3::CoDelQueueDisc or ns3::PfifoFastQueueDisc");
}
address.NewNetwork ();
interfaces = address.Assign (devices);
sink_interfaces.Add (interfaces.Get (1));
}
NS_LOG_INFO ("Initialize Global Routing.");
Ipv4GlobalRoutingHelper::PopulateRoutingTables ();
uint16_t port = 50000;
Address sinkLocalAddress (InetSocketAddress (Ipv4Address::GetAny (), port));
PacketSinkHelper sinkHelper ("ns3::TcpSocketFactory", sinkLocalAddress);
for (uint16_t i = 0; i < sources.GetN (); i++)
{
AddressValue remoteAddress (InetSocketAddress (sink_interfaces.GetAddress (i, 0), port));
Config::SetDefault ("ns3::TcpSocket::SegmentSize", UintegerValue (tcp_adu_size));
BulkSendHelper ftp ("ns3::TcpSocketFactory", Address ());
ftp.SetAttribute ("Remote", remoteAddress);
ftp.SetAttribute ("SendSize", UintegerValue (tcp_adu_size));
ftp.SetAttribute ("MaxBytes", UintegerValue (data_mbytes * 1000000));
ApplicationContainer sourceApp = ftp.Install (sources.Get (i));
sourceApp.Start (Seconds (start_time * i));
sourceApp.Stop (Seconds (stop_time - 3));
sinkHelper.SetAttribute ("Protocol", TypeIdValue (TcpSocketFactory::GetTypeId ()));
ApplicationContainer sinkApp = sinkHelper.Install (sinks.Get (i));
sinkApp.Start (Seconds (start_time * i));
sinkApp.Stop (Seconds (stop_time));
}
// Set up tracing if enabled
if (tracing)
{
std::ofstream ascii;
Ptr<OutputStreamWrapper> ascii_wrap;
ascii.open ((prefix_file_name + "-ascii").c_str ());
ascii_wrap = new OutputStreamWrapper ((prefix_file_name + "-ascii").c_str (),
std::ios::out);
stack.EnableAsciiIpv4All (ascii_wrap);
for (uint16_t index = 0; index < num_flows; index++)
{
std::string flowString ("");
if (num_flows>1)
{
flowString = "-flow" + std::to_string (index);
}
firstCwnd[index+1] = true;
firstSshThr[index+1] = true;
firstRtt[index+1] = true;
firstRto[index+1] = true;
Simulator::Schedule (Seconds (start_time * index + 0.00001), &TraceCwnd,
prefix_file_name + flowString + "-cwnd.data", index+1);
Simulator::Schedule (Seconds (start_time * index + 0.00001), &TraceSsThresh,
prefix_file_name + flowString + "-ssth.data", index+1);
Simulator::Schedule (Seconds (start_time * index + 0.00001), &TraceRtt,
prefix_file_name + flowString + "-rtt.data", index+1);
Simulator::Schedule (Seconds (start_time * index + 0.00001), &TraceRto,
prefix_file_name + flowString + "-rto.data", index+1);
Simulator::Schedule (Seconds (start_time * index + 0.00001), &TraceNextTx,
prefix_file_name + flowString + "-next-tx.data", index+1);
Simulator::Schedule (Seconds (start_time * index + 0.00001), &TraceInFlight,
prefix_file_name + flowString + "-inflight.data", index+1);
Simulator::Schedule (Seconds (start_time * index + 0.1), &TraceNextRx,
prefix_file_name + flowString + "-next-rx.data", num_flows+index+1);
}
}
if (pcap)
{
UnReLink.EnablePcapAll (prefix_file_name, true);
LocalLink.EnablePcapAll (prefix_file_name, true);
}
// Flow monitor
FlowMonitorHelper flowHelper;
if (flow_monitor)
{
flowHelper.InstallAll ();
}
Simulator::Stop (Seconds (stop_time));
Simulator::Run ();
if (flow_monitor)
{
flowHelper.SerializeToXmlFile (prefix_file_name + ".flowmonitor", true, true);
}
Simulator::Destroy ();
return 0;
}
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