VANET仿真-ns3(6)

#include <fstream>
#include <iostream>
#include "ns3/core-module.h"
#include "ns3/network-module.h"
#include "ns3/internet-module.h"
#include "ns3/mobility-module.h"
#include "ns3/wifi-module.h"
#include "ns3/aodv-module.h"
#include "ns3/olsr-module.h"
#include "ns3/dsdv-module.h"
#include "ns3/dsr-module.h"
#include "ns3/applications-module.h"

using namespace ns3;
using namespace dsr;

NS_LOG_COMPONENT_DEFINE ("manet-routing-compare");

class RoutingExperiment
{
public:
  RoutingExperiment ();
  void Run (int nSinks, double txp, std::string CSVfileName);
  //static void SetMACParam (ns3::NetDeviceContainer & devices,
  //                                 int slotDistance);
  std::string CommandSetup (int argc, char \**argv);

private:
  Ptr<Socket> SetupPacketReceive (Ipv4Address addr, Ptr<Node> node);
  void ReceivePacket (Ptr<Socket> socket);
  void CheckThroughput ();

  uint32_t port;
  uint32_t bytesTotal;
  uint32_t packetsReceived;

  std::string m_CSVfileName;
  int m_nSinks;
  std::string m_protocolName;
  double m_txp;
  bool m_traceMobility;
  uint32_t m_protocol;
};

//设置端口号、字节数、接收包的个数、CSV文件名、移动追踪、协议等
RoutingExperiment::RoutingExperiment ()
  : port (9),
    bytesTotal (0),
    packetsReceived (0),
    m_CSVfileName ("manet-routing.output.csv"),
    m_traceMobility (false),
    m_protocol (2) // AODV
{
}

//在RoutingExperiment::ReceivePacket中使用
static inline std::string
PrintReceivedPacket (Ptr<Socket> socket, Ptr<Packet> packet, Address senderAddress)
{
	//自动分配缓冲区，格式化字符串
  std::ostringstream oss;

  oss << Simulator::Now ().GetSeconds () << " " << socket->GetNode ()->GetId ();

	//如果找到匹配的地址，那么就把地址也表示出来
  if (InetSocketAddress::IsMatchingType (senderAddress))
    {
      InetSocketAddress addr = InetSocketAddress::ConvertFrom (senderAddress);
      oss << " received one packet from " << addr.GetIpv4 ();
    }
  else
    {
      oss << " received one packet!";
    }
  return oss.str ();
}

void
RoutingExperiment::ReceivePacket (Ptr<Socket> socket)
{
  Ptr<Packet> packet;
  Address senderAddress;
  //从socket中读取一个数据包packet，并且检索发送地址，保存到变量senderAddress中
  while ((packet = socket->RecvFrom (senderAddress)))
    {
      bytesTotal += packet->GetSize ();
      packetsReceived += 1;
      NS_LOG_UNCOND (PrintReceivedPacket (socket, packet, senderAddress));
    }
}

void
RoutingExperiment::CheckThroughput ()
{
	//先计算kbs，然后再把bytesTotal清零，用于计算下一次的kbs
  double kbs = (bytesTotal * 8.0) / 1000;
  bytesTotal = 0;

  //写操作到csv文件中
  std::ofstream out (m_CSVfileName.c_str (), std::ios::app);

  out << (Simulator::Now ()).GetSeconds () << ","
      << kbs << ","
      << packetsReceived << ","
      << m_nSinks << ","
      << m_protocolName << ","
      << m_txp << ""
      << std::endl;

  out.close ();
  //同理，这里packetsReceived也需要清零
  packetsReceived = 0;
  //设置1s延时之后执行CheckThroughput，this标明是谁唤醒成员函数
  Simulator::Schedule (Seconds (1.0), &RoutingExperiment::CheckThroughput, this);
}

Ptr<Socket>
RoutingExperiment::SetupPacketReceive (Ipv4Address addr, Ptr<Node> node)
{
	//通过名字返回一个TypeId
  TypeId tid = TypeId::LookupByName ("ns3::UdpSocketFactory");
  Ptr<Socket> sink = Socket::CreateSocket (node, tid);
  InetSocketAddress local = InetSocketAddress (addr, port);
  sink->Bind (local);
  //设置回调
  sink->SetRecvCallback (MakeCallback (&RoutingExperiment::ReceivePacket, this));

  return sink;
}

std::string
RoutingExperiment::CommandSetup (int argc, char \**argv)
{
  CommandLine cmd;
  cmd.AddValue ("CSVfileName", "The name of the CSV output file name", m_CSVfileName);
  cmd.AddValue ("traceMobility", "Enable mobility tracing", m_traceMobility);
  cmd.AddValue ("protocol", "1=OLSR;2=AODV;3=DSDV;4=DSR", m_protocol);
  cmd.Parse (argc, argv);
  return m_CSVfileName;
}

int
main (int argc, char \*argv[])
{
  RoutingExperiment experiment;
  std::string CSVfileName = experiment.CommandSetup (argc,argv);

  //blank out the last output file and write the column headers
  std::ofstream out (CSVfileName.c_str ());
  out << "SimulationSecond," <<
  "ReceiveRate," <<
  "PacketsReceived," <<
  "NumberOfSinks," <<
  "RoutingProtocol," <<
  "TransmissionPower" <<
  std::endl;
  out.close ();

  int nSinks = 10;
  double txp = 7.5;

  //节点数10，传播功率7.5
  experiment.Run (nSinks, txp, CSVfileName);
}

void
RoutingExperiment::Run (int nSinks, double txp, std::string CSVfileName)
{
  Packet::EnablePrinting ();
  m_nSinks = nSinks;
  m_txp = txp;
  m_CSVfileName = CSVfileName;

  int nWifis = 50;

  double TotalTime = 200.0;
  std::string rate ("2048bps");
  std::string phyMode ("DsssRate11Mbps");
  std::string tr_name ("manet-routing-compare");
  int nodeSpeed = 20; //in m/s
  int nodePause = 0; //in s
  m_protocolName = "protocol";

	//这里OnOffApplication生成了一个单向的交通流，有以下两个属性可以设置
  Config::SetDefault  ("ns3::OnOffApplication::PacketSize",StringValue ("64"));
  Config::SetDefault ("ns3::OnOffApplication::DataRate",  StringValue (rate));

  //将非单播模式设置成单播
  Config::SetDefault ("ns3::WifiRemoteStationManager::NonUnicastMode",StringValue (phyMode));

  NodeContainer adhocNodes;
  adhocNodes.Create (nWifis);

  // setting up wifi phy and channel using helpers
  WifiHelper wifi;
  wifi.SetStandard (WIFI_PHY_STANDARD_80211b);

  YansWifiPhyHelper wifiPhy =  YansWifiPhyHelper::Default ();
  YansWifiChannelHelper wifiChannel;
  wifiChannel.SetPropagationDelay ("ns3::ConstantSpeedPropagationDelayModel");
  wifiChannel.AddPropagationLoss ("ns3::FriisPropagationLossModel");
  wifiPhy.SetChannel (wifiChannel.Create ());

  // Add a mac and disable rate control
  WifiMacHelper wifiMac;
  wifi.SetRemoteStationManager ("ns3::ConstantRateWifiManager",
                                "DataMode",StringValue (phyMode),
                                "ControlMode",StringValue (phyMode));

  wifiPhy.Set ("TxPowerStart",DoubleValue (txp));
  wifiPhy.Set ("TxPowerEnd", DoubleValue (txp));

  wifiMac.SetType ("ns3::AdhocWifiMac");
  NetDeviceContainer adhocDevices = wifi.Install (wifiPhy, wifiMac, adhocNodes);

  MobilityHelper mobilityAdhoc;
  //为了能持续性地得到移动交叉场景
  int64_t streamIndex = 0; // used to get consistent mobility across scenarios

  //设置运动范围
  ObjectFactory pos;
  pos.SetTypeId ("ns3::RandomRectanglePositionAllocator");
  pos.Set ("X", StringValue ("ns3::UniformRandomVariable[Min=0.0|Max=300.0]"));
  pos.Set ("Y", StringValue ("ns3::UniformRandomVariable[Min=0.0|Max=1500.0]"));

  Ptr<PositionAllocator> taPositionAlloc = pos.Create ()->GetObject<PositionAllocator> ();
  streamIndex += taPositionAlloc->AssignStreams (streamIndex);

  std::stringstream ssSpeed;
  ssSpeed << "ns3::UniformRandomVariable[Min=0.0|Max=" << nodeSpeed << "]";
  std::stringstream ssPause;
  ssPause << "ns3::ConstantRandomVariable[Constant=" << nodePause << "]";
  mobilityAdhoc.SetMobilityModel ("ns3::RandomWaypointMobilityModel",
                                  "Speed", StringValue (ssSpeed.str ()),
                                  "Pause", StringValue (ssPause.str ()),
                                  "PositionAllocator", PointerValue (taPositionAlloc));
  mobilityAdhoc.SetPositionAllocator (taPositionAlloc);
  mobilityAdhoc.Install (adhocNodes);
  streamIndex += mobilityAdhoc.AssignStreams (adhocNodes, streamIndex);

  AodvHelper aodv;
  OlsrHelper olsr;
  DsdvHelper dsdv;
  DsrHelper dsr;
  DsrMainHelper dsrMain;
  Ipv4ListRoutingHelper list;
  InternetStackHelper internet;

  switch (m_protocol)
    {
    case 1:
      list.Add (olsr, 100);
      m_protocolName = "OLSR";
      break;
    case 2:
      list.Add (aodv, 100);
      m_protocolName = "AODV";
      break;
    case 3:
      list.Add (dsdv, 100);
      m_protocolName = "DSDV";
      break;
    case 4:
      m_protocolName = "DSR";
      break;
    default:
      NS_FATAL_ERROR ("No such protocol:" << m_protocol);
    }

  if (m_protocol < 4)
    {
      internet.SetRoutingHelper (list);
      internet.Install (adhocNodes);
    }
  else if (m_protocol == 4)
    {
      internet.Install (adhocNodes);
      dsrMain.Install (dsr, adhocNodes);
    }

  NS_LOG_INFO ("assigning ip address");

  Ipv4AddressHelper addressAdhoc;
  addressAdhoc.SetBase ("10.1.1.0", "255.255.255.0");
  Ipv4InterfaceContainer adhocInterfaces;
  adhocInterfaces = addressAdhoc.Assign (adhocDevices);

  OnOffHelper onoff1 ("ns3::UdpSocketFactory",Address ());
  onoff1.SetAttribute ("OnTime", StringValue ("ns3::ConstantRandomVariable[Constant=1.0]"));
  onoff1.SetAttribute ("OffTime", StringValue ("ns3::ConstantRandomVariable[Constant=0.0]"));

  for (int i = 0; i < nSinks; i++)
    {
      Ptr<Socket> sink = SetupPacketReceive (adhocInterfaces.GetAddress (i), adhocNodes.Get (i));

      AddressValue remoteAddress (InetSocketAddress (adhocInterfaces.GetAddress (i), port));
      onoff1.SetAttribute ("Remote", remoteAddress);

      Ptr<UniformRandomVariable> var = CreateObject<UniformRandomVariable> ();
      ApplicationContainer temp = onoff1.Install (adhocNodes.Get (i + nSinks));
      temp.Start (Seconds (var->GetValue (100.0,101.0)));
      temp.Stop (Seconds (TotalTime));
    }

  std::stringstream ss;
  ss << nWifis;
  std::string nodes = ss.str ();

  std::stringstream ss2;
  ss2 << nodeSpeed;
  std::string sNodeSpeed = ss2.str ();

  std::stringstream ss3;
  ss3 << nodePause;
  std::string sNodePause = ss3.str ();

  std::stringstream ss4;
  ss4 << rate;
  std::string sRate = ss4.str ();

  //NS_LOG_INFO ("Configure Tracing.");
  //tr_name = tr_name + "_" + m_protocolName +"_" + nodes + "nodes_" + sNodeSpeed + "speed_" + sNodePause + "pause_" + sRate + "rate";

  //AsciiTraceHelper ascii;
  //Ptr<OutputStreamWrapper> osw = ascii.CreateFileStream ( (tr_name + ".tr").c_str());
  //wifiPhy.EnableAsciiAll (osw);
  AsciiTraceHelper ascii;
  MobilityHelper::EnableAsciiAll (ascii.CreateFileStream (tr_name + ".mob"));

  //Ptr<FlowMonitor> flowmon;
  //FlowMonitorHelper flowmonHelper;
  //flowmon = flowmonHelper.InstallAll ();


  NS_LOG_INFO ("Run Simulation.");

  CheckThroughput ();

  Simulator::Stop (Seconds (TotalTime));
  Simulator::Run ();

  //flowmon->SerializeToXmlFile ((tr_name + ".flowmon").c_str(), false, false);

  Simulator::Destroy ();
}