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trad-handover.cc
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// Network topology
// ---------- ----------
// AP3 -- | Switch1 | --| Switch2 | -- H1
// ---------- ----------
// | | | |
// X AP1 AP2 H2
// | | | | |||
// X X | X X|X
// | |
// m2 m1
//
#include "ns3/core-module.h"
#include "ns3/network-module.h"
#include "ns3/csma-module.h"
#include "ns3/internet-module.h"
#include "ns3/wifi-module.h"
#include "ns3/mobility-module.h"
#include "ns3/applications-module.h"
//#include "ns3/flow-monitor-helper.h"
#include "ns3/flow-monitor-module.h"
#include "ns3/log.h"
// 给传统交换机(BridgeNetDevice)
#include "ns3/bridge-module.h"
#include "ns3/global-route-manager.h"
//包含 `gnuplot`和`Gnuplot2Ddatabase`
#include "ns3/stats-module.h"
#include "ns3/random-variable-stream.h"
#include "ns3/netanim-module.h"
// for DCE use
#include "ns3/dce-module.h"
#include <iostream>
#include <stdint.h>
#include <sstream>
#include <fstream>
#include <vector>
using namespace ns3;
//NS_LOG_COMPONENT_DEFINE ("TradHandoverScript");
bool tracing = true;
double stopTime = 40.0; // when the simulation stops
uint32_t nAp = 3;
uint32_t nSwitch = 2;
uint32_t nHost = 2;
uint32_t nAp1Station = 3;
uint32_t nAp2Station = 20; //使AP2过载
uint32_t nAp3Station = 1;
double nSamplingPeriod = 1; // 抽样间隔，根据总的Simulation时间做相应的调整
/* for udp-server-client application. */
uint32_t nMaxPackets = 20000; // The maximum packets to be sent.
double nInterval = 0.1; // The interval between two packet sent.
uint32_t nUdpPacketSize = 1024;
/* for tcp-bulk-send application. */
//uint32_t nMaxBytes = 1000000000; //Zero is unlimited. 100M
uint32_t nMaxBytes = 0;
// 1500字节以下的帧不需要RTS/CTS
uint32_t rtslimit = 1500;
uint32_t MaxRange = 100;
/* 恒定速度移动节点的
初始位置 x = 0.0, y = 40.0
和
移动速度 x = 10.0, y= 0.0
*/
Vector3D mPosition = Vector3D(160.0, 120.0, 0.0);
Vector3D mVelocity = Vector3D(0.0, -3.0 , 0.0);
// 设置各个AP的传输信号强度(dBm为单位)，必须得为正值，否则不能发送。而且越大表示信号越强。
double ap1TxPwr = 90;
double ap2TxPwr = 100;
double ap3TxPwr = 90;
Ipv4Address serverIp; // UDP/TCP的server IP
Ipv4Address clientIp; // UDP/TCP的client IP
////////////////////// 函数声明 ///////////////////
// 创建供http访问的html文件
void CreateFiles ();
bool CommandSetup(int argc, char **argv);
void ThroughputMonitor (FlowMonitorHelper* fmhelper, Ptr<FlowMonitor> monitor,
Gnuplot2dDataset dataset);
void LostPacketsMonitor (FlowMonitorHelper* fmhelper, Ptr<FlowMonitor> monitor,
Gnuplot2dDataset dataset2);
void DelayMonitor (FlowMonitorHelper* fmhelper, Ptr<FlowMonitor> monitor,
Gnuplot2dDataset dataset1);
void JitterMonitor (FlowMonitorHelper* fmhelper, Ptr<FlowMonitor> monitor,
Gnuplot2dDataset dataset3);
void PrintParams (FlowMonitorHelper* fmhelper, Ptr<FlowMonitor> monitor);
// 监听服务器端网卡丢的包
// 增强版
/*
static void
RxDrop (Ptr<PcapFileWrapper> file, Ptr<const Packet> p);
*/
// 简单版
static void
RxDrop (Ptr<const Packet> p);
// trace传输的包
/*static void PhyTxTrace (std::string path, Ptr<const Packet> packet,
uint16_t channelFreqMhz, uint16_t channelNumber, uint32_t rate,
bool isShortPreamble, uint8_t txPower);
*/
// trace接收的包
/*static void PhyRxTrace (std::string path, Ptr<const Packet> packet,
uint16_t channelFreqMhz, uint16_t channelNumber, uint32_t rate,
bool isShortPreamble, double signalDbm, double noiseDbm);
*/
////////////////////// 函数声明 ///////////////////
/*
要使在handover的时候throughput降低到0，可对AP进行调整，使得AP与STA到某个距离的时候信号降到0，使得连接断开
*/
int
main (int argc, char *argv[])
{
// Set up some default values for the simulation.
Config::SetDefault ("ns3::OnOffApplication::PacketSize", UintegerValue (1024));
Config::SetDefault ("ns3::OnOffApplication::DataRate", StringValue ("5Mbps"));
//设置默认拥塞控制算法
// ns-3.24 ///////
//Config::SetDefault ("ns3::TcpL4Protocol::SocketType", StringValue ("ns3::TcpTahoe"));
// ns-3.25后 ////////
//Config::SetDefault ("ns3::TcpL4Protocol::SocketType", StringValue ("ns3::TcpNewReno"));
//Config::SetDefault ("ns3::TcpL4Protocol::SocketType", StringValue ("ns3::TcpHybla"));
//Config::SetDefault ("ns3::TcpL4Protocol::SocketType", StringValue ("ns3::TcpHighSpeed"));
//Config::SetDefault ("ns3::TcpL4Protocol::SocketType", StringValue ("ns3::TcpVegas"));
//Config::SetDefault ("ns3::TcpL4Protocol::SocketType", StringValue ("ns3::TcpScalable"));
//Config::SetDefault ("ns3::TcpL4Protocol::SocketType", StringValue ("ns3::TcpVeno"));
//Config::SetDefault ("ns3::TcpL4Protocol::SocketType", StringValue ("ns3::TcpBic"));
//Config::SetDefault ("ns3::TcpL4Protocol::SocketType", StringValue ("ns3::TcpWestwood"));
//Config::SetDefault ("ns3::TcpL4Protocol::SocketType", StringValue ("ns3::TcpWestwoodPlus"));
Config::SetDefault ("ns3::Ipv4GlobalRouting::RespondToInterfaceEvents", BooleanValue (true));
/* RTS/CTS 一种半双工的握手协议
设置好RTS的阈值之后，如果超过这个阈值就会在发送信息之前先发送RTS，以减少干扰，
相应的CTS会回应之前的RTS。一般都是AP发送CTS数据，而Station发送RTS数据。
这里设置为1500，表示1500字节以上的frame要进行RTS/CTS机制
*/
Config::SetDefault ("ns3::WifiRemoteStationManager::RtsCtsThreshold",UintegerValue (rtslimit));
/*
x^2 = 20^2 + 50^ => 50 < x < 60
设置最大WIFI覆盖距离为50m(这样一个STA在与某个AP断开连接到与下一个AP连接上的时间之间会有一个间隔时间), 超出这个距离之后将无法传输WIFI信号
*/
Config::SetDefault ("ns3::RangePropagationLossModel::MaxRange", DoubleValue (MaxRange));
/* 设置命令行参数 */
CommandSetup (argc, argv) ;
/* 创建供http用的html文件 */
mkdir ("files-trad-handover", 0744);
CreateFiles ();
// For real time
//GlobalValue::Bind ("SimulatorImplementationType", StringValue("ns3::RealtimeSimulatorImpl"));
// Enabling Checksum computations
GlobalValue::Bind ("ChecksumEnabled", BooleanValue (true));
//LogComponentEnable ("TradHandoverScript", LOG_LEVEL_INFO);
/*----- init Helpers ----- */
CsmaHelper csma;
/* 调用YansWifiChannelHelper::Default() 已经添加了默认的传播损耗模型, 下面不要再手动添加 */
YansWifiChannelHelper wifiChannel = YansWifiChannelHelper::Default();
Ptr<YansWifiChannel> yansWifiChannel = wifiChannel.Create();
////////////////////////////////////////
////////////// LOSS MODEL //////////////
////////////////////////////////////////
/*
* `FixedRssLossModel` will cause the `rss to be fixed` regardless
* of the distance between the two stations, and the transmit power
*
*
*
*
*
*
*/
/* 传播延时速度是恒定的 */
wifiChannel.SetPropagationDelay ("ns3::ConstantSpeedPropagationDelayModel");
/* 很多地方都用这个，不知道什么意思 */
// wifiChannel.AddPropagationLoss ("ns3::FriisPropagationLossModel"); // !!! 加了这句之后AP和STA就无法连接了
//wifiChannel.AddPropagationLoss ("ns3::LogDistancePropagationLossModel");
/* 不管发送功率是多少，都返回一个恒定的接收功率 */
//wifiChannel.AddPropagationLoss ("ns3::FixedRssLossModel","Rss",DoubleValue (rss));
wifiChannel.AddPropagationLoss ("ns3::RangePropagationLossModel");
// 一个给AP，一个给STA
YansWifiPhyHelper wifiPhyAP = YansWifiPhyHelper::Default();
YansWifiPhyHelper wifiPhySTA = YansWifiPhyHelper::Default();
wifiPhyAP.SetPcapDataLinkType (YansWifiPhyHelper::DLT_IEEE802_11_RADIO);
wifiPhyAP.SetChannel (yansWifiChannel);
wifiPhySTA.SetPcapDataLinkType (YansWifiPhyHelper::DLT_IEEE802_11_RADIO);
wifiPhySTA.SetChannel (yansWifiChannel);
WifiHelper wifi;
/* The SetRemoteStationManager method tells the helper the type of `rate control algorithm` to use.
* Here, it is asking the helper to use the AARF algorithm
*/
wifi.SetRemoteStationManager ("ns3::AarfWifiManager");
wifi.SetStandard (WIFI_PHY_STANDARD_80211g);
//wifi.SetStandard (WIFI_PHY_STANDARD_80211n_5GHZ); // 貌似只能在ns-3.25支持
//wifi.SetStandard (WIFI_PHY_STANDARD_80211b);
//QosWifiMacHelper wifiMac;
/* 用QosWifiMacHelper明显比 NqosWifiMacHelper 的吞吐量高 */
// 一个给AP，一个给STA
// NqosWifiMacHelper wifiMacAP = NqosWifiMacHelper::Default ();
// NqosWifiMacHelper wifiMacSTA = NqosWifiMacHelper::Default ();
QosWifiMacHelper wifiMacAP = QosWifiMacHelper::Default ();
QosWifiMacHelper wifiMacSTA = QosWifiMacHelper::Default ();
NS_LOG_UNCOND ("------------Creating Nodes------------");
NodeContainer switchesNode, apsNode, hostsNode;
NodeContainer staWifiNodes[nAp]; // 数组，包含nAp个NodeContainer,而每个NodeContainer里面包含各自WIFI网络中的节点
for (size_t i = 0; i < nAp; i++)
{
staWifiNodes[i] = NodeContainer();
}
switchesNode. Create (nSwitch); //2 Nodes(switch1 and switch2)-----node 0,1
apsNode. Create (nAp); //3 Nodes(Ap1 Ap2 and Ap3)-----node 2,3,4
hostsNode. Create (nHost); //2 Nodes(terminal1 and terminal2)-----node 5,6
staWifiNodes[0].Create(nAp1Station); // node 7,8,9
staWifiNodes[1].Create(nAp2Station); // node 10,11,12,13
staWifiNodes[2].Create(nAp3Station); // node 14
Ptr<Node> ap1WifiNode = apsNode.Get (0);
Ptr<Node> ap2WifiNode = apsNode.Get (1);
Ptr<Node> ap3WifiNode = apsNode.Get (2);
NS_LOG_UNCOND ("------------Creating Devices------------");
/* CSMA Devices */
NetDeviceContainer apCsmaDevices[nAp];
for (size_t i = 0; i < nAp; i++)
{
apCsmaDevices[i] = NetDeviceContainer();
}
NetDeviceContainer hostDevices;
NetDeviceContainer switchDevices[nSwitch]; //两个switch的网卡们(ports)
for (size_t i = 0; i < nSwitch; i++)
{
switchDevices[i] = NetDeviceContainer();
}
/* WIFI Devices */
NetDeviceContainer stasWifiDevices[nAp]; // 各个WIFI网络的STA的数组，每个NetDeviceContainer里包含各自WIFI网络的网卡
for (size_t i = 0; i < nAp; i++)
{
stasWifiDevices[i] = NetDeviceContainer();
}
NetDeviceContainer apWifiDevices[nAp]; // 各个WIFI网络的AP数组，每个NetDeviceContainer里包含各种WIFI网络的网卡
for (size_t i = 0 ; i <nAp; i++)
{
apWifiDevices[i] = NetDeviceContainer();
}
NS_LOG_UNCOND ("------------Building Topology-------------");
NetDeviceContainer link;
/* #1 Connect traditional switch1 to traditional switch2 */
// switch1 和 switch2 之间的线路作为主干线路, 应该是100M的
csma.SetChannelAttribute ("DataRate", DataRateValue (DataRate ("100Mbps")));
csma.SetChannelAttribute ("Delay", TimeValue (MilliSeconds (2)));
link = csma.Install (NodeContainer(switchesNode.Get(0),switchesNode.Get(1)));
switchDevices[0]. Add(link.Get(0));
switchDevices[1]. Add(link.Get(1));
/* #2 Connect AP1, AP2 and AP3 to traditional switch1 ！！！*/
// 各个AP到switch1的线路做一下限制, 每个AP到switch1只能有30M
csma.SetChannelAttribute ("DataRate", DataRateValue (DataRate ("30Mbps")));
csma.SetChannelAttribute ("Delay", TimeValue (MilliSeconds (2)));
for (uint32_t i = 0; i < nAp; i++)
{
link = csma.Install (NodeContainer(apsNode.Get(i), switchesNode.Get(0))); // Get(0) for switch1
if (i == 0)
{
apCsmaDevices[0]. Add(link.Get(0));
}
else if (i == 1)
{
apCsmaDevices[1]. Add(link.Get(0));
}
else if (i == 2)
{
apCsmaDevices[2]. Add(link.Get(0));
}
switchDevices[0]. Add(link.Get(1));
}
// 别忘了这里也要设置csma的link参数，否则会沿用上一个30Mbps的值
csma.SetChannelAttribute ("DataRate", DataRateValue (DataRate ("100Mbps")));
csma.SetChannelAttribute ("Delay", TimeValue (MilliSeconds (2)));
/* #3 Connect host1 and host2 to traditonal switch2 */
for (uint32_t i = 0; i < nHost; i++)
{
link = csma.Install (NodeContainer(hostsNode.Get(i), switchesNode.Get(1))); // Get(1) for switch2
hostDevices. Add(link.Get(0));
switchDevices[1]. Add(link.Get(1));
}
NS_LOG_UNCOND ("----------Configuring WIFI networks----------");
Ssid ssid = Ssid ("ssid-default");
//Ssid ssid1 = Ssid ("ssid-1");
//Ssid ssid2 = Ssid ("ssid-2");
//Ssid ssid3 = Ssid ("ssid-3");
//wifiPhy.Set("ChannelNumber", UintegerValue(1 + (0 % 3) * 5)); // 1
// ------------------- 配置STA --------------------
wifiMacSTA.SetType ("ns3::StaWifiMac",
"Ssid", SsidValue (ssid),
"ActiveProbing", BooleanValue (false));//
stasWifiDevices[0] = wifi.Install(wifiPhySTA, wifiMacSTA, staWifiNodes[0] );
wifiMacSTA.SetType ("ns3::StaWifiMac",
"Ssid", SsidValue (ssid),
"ActiveProbing", BooleanValue (false));//
stasWifiDevices[1] = wifi.Install(wifiPhySTA, wifiMacSTA, staWifiNodes[1] );
wifiMacSTA.SetType ("ns3::StaWifiMac",
"Ssid", SsidValue (ssid),
"ActiveProbing", BooleanValue (false));//变成false似乎还快一些
stasWifiDevices[2] = wifi.Install(wifiPhySTA, wifiMacSTA, staWifiNodes[2] );
// ------------------- 配置STA --------------------
// ------------------- 配置AP --------------------
wifiMacAP.SetType ("ns3::ApWifiMac",
"Ssid", SsidValue (ssid));
wifiPhyAP.Set("TxPowerStart", DoubleValue(ap1TxPwr));
wifiPhyAP.Set("TxPowerEnd", DoubleValue(ap1TxPwr));
apWifiDevices[0] = wifi.Install(wifiPhyAP, wifiMacAP, ap1WifiNode);
//wifiPhy.Set("ChannelNumber", UintegerValue(1 + (1 % 3) * 5)); // 6
wifiMacAP.SetType ("ns3::ApWifiMac",
"Ssid", SsidValue (ssid));
wifiPhyAP.Set("TxPowerStart", DoubleValue(ap2TxPwr));
wifiPhyAP.Set("TxPowerEnd", DoubleValue(ap2TxPwr));
apWifiDevices[1] = wifi.Install(wifiPhyAP, wifiMacAP, ap2WifiNode);
//wifiPhy.Set("ChannelNumber", UintegerValue(1 + (2 % 3) * 5)); // 11
wifiMacAP.SetType ("ns3::ApWifiMac",
"Ssid", SsidValue (ssid));
wifiPhyAP.Set("TxPowerStart", DoubleValue(ap3TxPwr));
wifiPhyAP.Set("TxPowerEnd", DoubleValue(ap3TxPwr));
apWifiDevices[2] = wifi.Install(wifiPhyAP, wifiMacAP, ap3WifiNode);
// ------------------- 配置AP --------------------
MobilityHelper mobility1;
/* for staWifi--1--Nodes */
mobility1.SetPositionAllocator ("ns3::GridPositionAllocator",
"MinX", DoubleValue (80),
"MinY", DoubleValue (40),
"DeltaX", DoubleValue (20),
"DeltaY", DoubleValue (20),
"GridWidth", UintegerValue(3),
"LayoutType",StringValue ("RowFirst")
); // "GridWidth", UintegerValue(3),
mobility1.SetMobilityModel ("ns3::RandomWalk2dMobilityModel",
"Bounds", RectangleValue (Rectangle (50, 150, 40, 120)));
mobility1.Install (staWifiNodes[0]);
/* for staWifi--2--Nodes */
MobilityHelper mobility2;
mobility2.SetPositionAllocator ("ns3::GridPositionAllocator",
"MinX", DoubleValue (150), // 指这一组节点的起始节点的x轴坐标
"MinY", DoubleValue (5), // 指这一组节点的起始节点的y轴坐标
"DeltaX", DoubleValue (20), // x轴方向间隔
"DeltaY", DoubleValue (10), // y轴方向间隔
"GridWidth", UintegerValue(5), // 指网格的宽度为几个节点
"LayoutType",StringValue ("RowFirst")
); // "GridWidth", UintegerValue(3),
mobility2.SetMobilityModel ("ns3::RandomWalk2dMobilityModel",
"Bounds", RectangleValue (Rectangle (100, 250, 0, 40))); // 活动范围矩形框
mobility2.Install (staWifiNodes[1]);
/* for sta-1-Wifi-3-Node 要让Wifi3网络中的Sta1以恒定速度移动 */
MobilityHelper mobConstantSpeed;
mobConstantSpeed.SetMobilityModel ("ns3::ConstantVelocityMobilityModel");
mobConstantSpeed.Install (staWifiNodes[2].Get(0)); // Wifi-3中的第一个节点(即Node14)安装
Ptr <ConstantVelocityMobilityModel> velocityModel = staWifiNodes[2].Get(0)->GetObject<ConstantVelocityMobilityModel>();
velocityModel->SetPosition(mPosition);
velocityModel->SetVelocity(mVelocity);
/* for ConstantPosition Nodes */
MobilityHelper mobConstantPosition;
/* We want the AP to remain in a fixed position during the simulation
* only stations in AP1 and AP2 is mobile, the only station in AP3 is not mobile.
*/
mobConstantPosition.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
mobConstantPosition.Install (apsNode);
mobConstantPosition.Install (hostsNode);
//mobConstantPosition.Install (staWifiNodes[2]);
mobConstantPosition.Install (switchesNode);
NS_LOG_UNCOND ("----------Installing Bridge NetDevice----------");
/*!!!!!!!!!!!! 关键的 BridgeHelper !!!!!!!!!!!*/
BridgeHelper bridge1, bridge2;
// 每个Switch中，与AP相连的CSMA网卡，和 与另一个Switch相连的CSMA网卡 构成一个`BridgeNetDevice`
// 下面表示在某Node上安装 ns3::BridgeNetDevice
bridge1. Install(switchesNode.Get(0), switchDevices[0]);
bridge2. Install(switchesNode.Get(1), switchDevices[1]);
// 每个AP中，CSMA网卡与WIFI网卡构成一个`BridgeNetDevice`
BridgeHelper bridgeForAP1, bridgeForAP2, bridgeForAP3;
bridgeForAP1. Install(apsNode.Get (0), NetDeviceContainer(apWifiDevices[0], apCsmaDevices[0]));
bridgeForAP2. Install(apsNode.Get (1), NetDeviceContainer(apWifiDevices[1], apCsmaDevices[1]));
bridgeForAP3. Install(apsNode.Get (2), NetDeviceContainer(apWifiDevices[2], apCsmaDevices[2]));
NS_LOG_UNCOND ("----------Installing Internet stack----------");
/* Add internet stack to all the nodes, expect switches(交换机不用) */
InternetStackHelper internet;
internet.Install (apsNode);
internet.Install (hostsNode);
internet.Install (switchesNode); // 给交换机撞上Internet之后，交换机有了回环网卡
internet.Install (staWifiNodes[0]);
internet.Install (staWifiNodes[1]);
internet.Install (staWifiNodes[2]);
NS_LOG_UNCOND ("-----------Assigning IP Addresses.-----------");
Ipv4AddressHelper ip;
ip.SetBase ("10.0.0.0", "255.255.255.0");
Ipv4InterfaceContainer h1h2Interface;
Ipv4InterfaceContainer stasWifi1Interface;
Ipv4InterfaceContainer stasWifi2Interface;
Ipv4InterfaceContainer stasWifi3Interface;
h1h2Interface = ip.Assign (hostDevices); // 10.0.0.1~2
// 供三组STA
stasWifi1Interface = ip.Assign (stasWifiDevices[0]); // 10.0.0.0.3~5
stasWifi2Interface = ip.Assign (stasWifiDevices[1]);
stasWifi3Interface = ip.Assign (stasWifiDevices[2]);
// 设置全局变量server IP 和client IP的值，供下面的测延时、吞吐量、抖动、丢包等使用
serverIp = h1h2Interface.GetAddress(1);
clientIp = stasWifi3Interface.GetAddress(0);
NS_LOG_UNCOND ("-----------Creating Applications.-----------");
uint16_t port = 9; // Discard port (RFC 863)
/* A DceManager is a DCE internal class which manage the execution of the executable you will declare to run within ns-3
DceManagerHelper is the tool you will use withnin your script to parameter and install DceManager on the ns-3 nodes
where you plan to run binaries.
*/
DceManagerHelper dceManager;
// dceManager.SetTaskManagerAttribute( "FiberManagerType", StringValue ( "UcontextFiberManager" ) );
// 在需要运行binary的node上安装DceManager
dceManager. Install (hostsNode);
dceManager. Install (staWifiNodes[0]);
dceManager. Install (staWifiNodes[1]);
dceManager. Install (staWifiNodes[2]);
DceApplicationHelper dce;
dce.SetStackSize (1 << 30 ); // 1MB stack(stack size for this application.)
// Launch the server HTTPD on hostsNode.Get(1)
dce.SetBinary ("thttpd");
dce.ResetArguments (); // clean arguments
dce.ResetEnvironment (); // clean environment
// dce.AddArgument ("-D");
dce.SetUid (1); // set httpd for super user execution
dce.SetEuid (1);
ApplicationContainer serverApps;
serverApps = dce.Install (hostsNode.Get(1)); // install http daemon, install 之后得到一个 ApplicationContainer
serverApps. Start (Seconds (1));
// Launch the client WGET on STA nodes
dce.SetBinary ("wget");
dce.ResetArguments (); // clean arguments
dce.ResetEnvironment (); // clean environment
dce.AddArgument ("-r"); // recursive wget
dce.AddArgument ("http://" + serverIp + "/index.html");
// dce.AddArgument ("http://10.0.0.2/index.html");
ApplicationContainer clientApps;
clientApps. Add (dce.Install(hostsNode.Get(1)) );
clientApps. Add (dce.Install(staWifiNodes[0]));
clientApps. Add (dce.Install(staWifiNodes[1]));
clientApps. Add (dce.Install(staWifiNodes[2]));
clientApps. Start (Seconds (1.001));
/*
// UDP server
UdpServerHelper server (port); // for the server side, only one param(port) is specified
// for node 6
ApplicationContainer serverApps = server.Install (hostsNode.Get(1));
serverApps.Start (Seconds(1.0));
serverApps.Stop (Seconds(stopTime));
// UDP client
UdpClientHelper client (h1h2Interface.GetAddress(1) ,port); // stasWifi2Interface.GetAddress(0)
client.SetAttribute ("MaxPackets", UintegerValue (nMaxPackets));
client.SetAttribute ("Interval", TimeValue (Seconds(nInterval)));
client.SetAttribute ("PacketSize", UintegerValue (nUdpPacketSize));
// for node 14
ApplicationContainer clientApps = client.Install(staWifiNodes[2].Get(0));
// for node 10
//ApplicationContainer clientApps = client.Install(staWifiNodes[1].Get(0));
// for node 5
//ApplicationContainer clientApps = client.Install(hostsNode.Get(0));
clientApps.Start (Seconds(1.1));
clientApps.Stop (Seconds(stopTime));
*/
/*
// TCP server
PacketSinkHelper sink ("ns3::TcpSocketFactory",
InetSocketAddress (Ipv4Address::GetAny (), port));
ApplicationContainer sinkApps = sink.Install (hostsNode.Get(1));
sinkApps.Start (Seconds (1.0));
sinkApps.Stop (Seconds(stopTime));
*/
// TCP client
/*
// 给3 个AP1 的stations 加上 BulkSender
for (uint32_t i = 0; i < nAp1Station; i++)
{
BulkSendHelper ap1Source ("ns3::TcpSocketFactory",
InetSocketAddress (h1h2Interface.GetAddress(1), port)); // 服务器的IP
// Set the amount of data to send in bytes. Zero is unlimited.
ap1Source.SetAttribute ("MaxBytes", UintegerValue (nMaxBytes));
ApplicationContainer ap1sourceApps = ap1Source.Install (staWifiNodes[0].Get(i)); // AP1内的第 i 个STA
ap1sourceApps.Start (Seconds (1.0));
ap1sourceApps.Stop (Seconds (stopTime));
}
// 给20 个AP2 的stations 加上 BulkSender
for (uint32_t i = 0; i < nAp2Station; i++)
{
BulkSendHelper ap2Source ("ns3::TcpSocketFactory",
InetSocketAddress (h1h2Interface.GetAddress(1), port)); // 服务器的IP
// Set the amount of data to send in bytes. Zero is unlimited.
ap2Source.SetAttribute ("MaxBytes", UintegerValue (nMaxBytes));
ApplicationContainer ap2sourceApps = ap2Source.Install (staWifiNodes[1].Get(i)); // AP2内的第 i 个STA
ap2sourceApps.Start (Seconds (1.0));
ap2sourceApps.Stop (Seconds (stopTime));
}
// the moving station
BulkSendHelper source ("ns3::TcpSocketFactory",
InetSocketAddress (h1h2Interface.GetAddress(1), port));
// Set the amount of data to send in bytes. Zero is unlimited.
source.SetAttribute ("MaxBytes", UintegerValue (nMaxBytes));
ApplicationContainer sourceApps = source.Install (staWifiNodes[2].Get(0)); // AP3内的第 0 个STA
sourceApps.Start (Seconds (1.0));
sourceApps.Stop (Seconds (stopTime));
*/
/*
ApplicationContainer clientApps;
// 给3 个AP1 的stations 加上 OnOffApplication
for (uint32_t i = 0; i < nAp1Station; i++)
{
OnOffHelper ap1OnOffHelper = OnOffHelper ("ns3::TcpSocketFactory",
InetSocketAddress (h1h2Interface.GetAddress(1), port));
ap1OnOffHelper.SetAttribute ("OnTime", StringValue ("ns3::ConstantRandomVariable[Constant=1]"));
ap1OnOffHelper.SetAttribute ("OffTime", StringValue ("ns3::ConstantRandomVariable[Constant=0]"));
ap1OnOffHelper.SetAttribute ("StartTime", TimeValue (Seconds (1.001)));
ap1OnOffHelper.SetAttribute ("StopTime", TimeValue (Seconds(stopTime)));
clientApps.Add( ap1OnOffHelper.Install (staWifiNodes[0].Get(i)) );
}
// 给20 个AP2 的stations 加上 OnOffApplication
for (uint32_t i = 0; i < nAp2Station; i++)
{
OnOffHelper ap2OnOffHelper = OnOffHelper ("ns3::TcpSocketFactory",
InetSocketAddress (h1h2Interface.GetAddress(1), port));
ap2OnOffHelper.SetAttribute ("OnTime", StringValue ("ns3::ConstantRandomVariable[Constant=1]"));
ap2OnOffHelper.SetAttribute ("OffTime", StringValue ("ns3::ConstantRandomVariable[Constant=0]"));
ap2OnOffHelper.SetAttribute ("StartTime", TimeValue (Seconds (1.001)));
ap2OnOffHelper.SetAttribute ("StopTime", TimeValue (Seconds(stopTime)));
clientApps.Add( ap2OnOffHelper.Install (staWifiNodes[1].Get(i)) );
}
// 给移动的STA加上 OnOffApplication
OnOffHelper staOnOffHelper = OnOffHelper ("ns3::TcpSocketFactory",
InetSocketAddress (h1h2Interface.GetAddress(1), port));
staOnOffHelper.SetAttribute ("OnTime", StringValue ("ns3::ConstantRandomVariable[Constant=1]"));
staOnOffHelper.SetAttribute ("OffTime", StringValue ("ns3::ConstantRandomVariable[Constant=0]"));
staOnOffHelper.SetAttribute ("StartTime", TimeValue (Seconds (1.001)));
staOnOffHelper.SetAttribute ("StopTime", TimeValue (Seconds(stopTime)));
clientApps.Add( staOnOffHelper.Install (staWifiNodes[2].Get(0)) );
*/
// Create a source to send packets. Instead of a full Application
// and the helper APIs you might see in other example files, this example
// will use sockets directly and register some socket callbacks as a sending
// "Application".
// Create and bind the socket...
//Ptr<Socket> localSocket =
//Socket::CreateSocket (staWifiNodes[2].Get(0), TcpSocketFactory::GetTypeId ());
//localSocket->Bind ();
// Trace changes to the congestion window
//Config::ConnectWithoutContext ("/NodeList/14/$ns3::TcpL4Protocol/SocketList/0/CongestionWindow", MakeCallback (&CwndTracer));
// ...and schedule the sending "Application"; This is similar to what an
// ns3::Application subclass would do internally.
//Simulator::ScheduleNow (&StartFlow, localSocket,
//h1h2Interface.GetAddress (1), port);
// One can toggle the comment for the following line on or off to see the
// effects of finite send buffer modelling. One can also change the size of
// said buffer.
//localSocket->SetAttribute("SndBufSize", UintegerValue(1024));
NS_LOG_UNCOND ("-----------Configuring Tracing.-----------");
/**
* Configure tracing of all enqueue, dequeue, and NetDevice receive events.
* Trace output will be sent to the file as below
*/
if (tracing)
{
//AsciiTraceHelper ascii;
//csma.EnablePcapAll("goal-topo-trad");
//csma.EnableAsciiAll (ascii.CreateFileStream ("trad-handover/trad-handover.tr"));
wifiPhyAP.EnablePcap ("trad-handover/trad-handover-ap1-wifi", apWifiDevices[0]);
wifiPhyAP.EnablePcap ("trad-handover/trad-handover-ap2-wifi", apWifiDevices[1]);
//wifiPhy.EnablePcap ("trad-handover/trad-handover-ap2-sta1-wifi", stasWifiDevices[1]);
wifiPhyAP.EnablePcap ("trad-handover/trad-handover-ap3-wifi", apWifiDevices[2]);
wifiPhySTA.EnablePcap ("trad-handover/trad-handover-sta-wifi", stasWifiDevices[2].Get(0)); //只有一个
// WifiMacHelper doesnot have `EnablePcap()` method
//csma.EnablePcap ("trad-handover/trad-switch1-csma", switchDevices[0]);
//csma.EnablePcap ("trad-handover/trad-switch2-csma", switchDevices[1]);
//csma.EnablePcap ("trad-handover/trad-ap1-csma", apCsmaDevices[0]);
//csma.EnablePcap ("trad-handover/trad-ap2-csma", apCsmaDevices[1]);
//csma.EnablePcap ("trad-handover/trad-ap3-csma", apCsmaDevices[2]);
//csma.EnablePcap ("trad-handover/trad-H1-csma", hostDevices.Get(0));
csma.EnablePcap ("trad-handover/trad-H2-csma", hostDevices.Get(1));
}
AnimationInterface anim ("trad-handover/trad-handover.xml");
anim.SetConstantPosition(switchesNode.Get(0),200,0); // s1-----node 0
anim.SetConstantPosition(switchesNode.Get(1),400,0); // s2-----node 1
anim.SetConstantPosition(apsNode.Get(0),100,20); // Ap1----node 2
anim.SetConstantPosition(apsNode.Get(1),200,20); // Ap2----node 3
anim.SetConstantPosition(apsNode.Get(2),180,100); // Ap3----node 4
anim.SetConstantPosition(hostsNode.Get(0),350,60); // H1-----node 5
anim.SetConstantPosition(hostsNode.Get(1),400,60); // H2-----node 6
//anim.SetConstantPosition(staWifiNodes[2].Get(0),55,40); // -----node 14
anim.EnablePacketMetadata(); // to see the details of each packet
NS_LOG_UNCOND ("------------Configuring Global variables------------");
/* `MonitorSnifferTx` : Trace source simulating the capability of a wifi device
in monitor mode to sniff all frames being transmitted
*/
//Config::Connect ("/NodeList/2/DeviceList/*/$ns3::WifiNetDevice/Phy/MonitorSnifferRx", MakeCallback (&PhyRxTrace));
/* `MonitorSnifferRx` : Trace source simulating a wifi device in monitor mode
sniffing all received frames
*/
// Node2 为AP1，Node3 为AP2， Node4 为AP3
//for (uint32_t i = 2; i < 5; i++)
//{
//Config::Connect ("/NodeList/" + i + "/DeviceList/*/$ns3::WifiNetDevice/Phy/MonitorSnifferTx", MakeCallback (&PhyTxTrace));
//}
// 对接收TCP流量的服务器的网卡(hostsDevices的第二张网卡)监听其丢的包
/*增强版
PcapHelper pcapHelper;
Ptr<PcapFileWrapper> file = pcapHelper.CreateFile ("sixth.pcap", std::ios::out, PcapHelper::DLT_PPP);
devices.Get (1)->TraceConnectWithoutContext("PhyRxDrop", MakeBoundCallback (&RxDrop, file));
*/
// 简单版
hostDevices.Get (1)->TraceConnectWithoutContext("PhyRxDrop", MakeCallback (&RxDrop));
NS_LOG_UNCOND ("------------Preparing for Checking all the params.------------");
FlowMonitorHelper flowmon;
Ptr<FlowMonitor> monitor = flowmon.InstallAll();
Simulator::Stop (Seconds(stopTime));
/*----------------------------------------------------------------------*/
std::string base = "trad-handover__";
//Throughput
std::string throu = base + "ThroughputVSTime";
std::string graphicsFileName = throu + ".eps";
std::string plotFileName = throu + ".plt";
std::string plotTitle = "Throughput vs Time";
std::string dataTitle = "Throughput";
Gnuplot gnuplot (graphicsFileName);
gnuplot.SetTitle (plotTitle);
//gnuplot.SetTerminal ("png");
gnuplot.SetTerminal ("postscript eps color enh \"Times-BoldItalic\"");
gnuplot.SetLegend ("Time(seconds)", "Throughput(Kbit/s)");
//gnuplot.AppendExtra ("set xrange [10:35]");
Gnuplot2dDataset dataset;
dataset.SetTitle (dataTitle);
dataset.SetStyle (Gnuplot2dDataset::POINTS);
//dataset.SetErrorBars (Gnuplot2dDataset::XY);
//Delay
std::string delay = base + "DelayVSTime";
std::string graphicsFileName1 = delay + ".eps";
std::string plotFileName1 = delay + ".plt";
std::string plotTitle1 = "Delay vs Time";
std::string dataTitle1 = "Delay";
Gnuplot gnuplot1 (graphicsFileName1);
gnuplot1.SetTitle (plotTitle1);
//gnuplot1.SetTerminal ("png");
gnuplot1.SetTerminal ("postscript eps color enh \"Times-BoldItalic\"");
gnuplot1.SetLegend ("Time(seconds)", "Delay(seconds)");
//gnuplot1.AppendExtra ("set xrange [10:35]");
Gnuplot2dDataset dataset1;
dataset1.SetTitle (dataTitle1);
dataset1.SetStyle (Gnuplot2dDataset::POINTS);
//dataset1.SetErrorBars (Gnuplot2dDataset::XY);
//LostPackets
std::string lost = base + "LostPacketsVSTime";
std::string graphicsFileName2 = lost + ".eps";
std::string plotFileName2 = lost + ".plt";
std::string plotTitle2 = "LostPackets vs Time";
std::string dataTitle2 = "LostPackets";
Gnuplot gnuplot2 (graphicsFileName2);
gnuplot2.SetTitle (plotTitle2);
//gnuplot2.SetTerminal ("png");
gnuplot2.SetTerminal ("postscript eps color enh \"Times-BoldItalic\"");
gnuplot2.SetLegend ("Time(seconds)", "LostPackets");
//gnuplot2.AppendExtra ("set xrange [10:35]");
Gnuplot2dDataset dataset2;
dataset2.SetTitle (dataTitle2);
dataset2.SetStyle (Gnuplot2dDataset::POINTS);
//dataset2.SetErrorBars (Gnuplot2dDataset::XY);
//Jitter
std::string jitter = base + "JitterVSTime";
std::string graphicsFileName3 = jitter + ".eps";
std::string plotFileName3 = jitter + ".plt";
std::string plotTitle3 = "Jitter vs Time";
std::string dataTitle3 = "Jitter";
Gnuplot gnuplot3 (graphicsFileName3);
gnuplot3.SetTitle (plotTitle3);
//gnuplot3.SetTerminal ("png");
gnuplot3.SetTerminal ("postscript eps color enh \"Times-BoldItalic\"");
gnuplot3.SetLegend ("Time(seconds)", "Jitter(seconds)");
//gnuplot3.AppendExtra ("set xrange [10:35]");
Gnuplot2dDataset dataset3;
dataset3.SetTitle (dataTitle3);
dataset3.SetStyle (Gnuplot2dDataset::POINTS);
//dataset3.SetErrorBars (Gnuplot2dDataset::XY);
/*-----------------------------------------------------*/
// 测吞吐量, 延时, 丢包, 抖动
ThroughputMonitor (&flowmon, monitor, dataset);
DelayMonitor (&flowmon, monitor, dataset1);
LostPacketsMonitor(&flowmon, monitor, dataset2);
JitterMonitor (&flowmon, monitor, dataset3);
// 打印出各种参数
PrintParams (&flowmon, monitor);
/*-----------------------------------------------------*/
NS_LOG_UNCOND ("------------Running Simulation.------------");
Simulator::Run ();
//Throughput
gnuplot.AddDataset (dataset);
std::ofstream plotFile (plotFileName.c_str());
gnuplot.GenerateOutput (plotFile);
plotFile.close ();
//Delay
gnuplot1.AddDataset (dataset1);
std::ofstream plotFile1 (plotFileName1.c_str());
gnuplot1.GenerateOutput (plotFile1);
plotFile1.close ();
//LostPackets
gnuplot2.AddDataset (dataset2);
std::ofstream plotFile2 (plotFileName2.c_str());
gnuplot2.GenerateOutput (plotFile2);
plotFile2.close ();
//Jitter
gnuplot3.AddDataset (dataset3);
std::ofstream plotFile3 (plotFileName3.c_str());
gnuplot3.GenerateOutput (plotFile3);
plotFile3.close ();
//monitor->SerializeToXmlFile("trad-handover/trad-handover.flowmon", true, true);
/* the SerializeToXmlFile () function 2nd and 3rd parameters
* are used respectively to activate/deactivate the histograms and the per-probe detailed stats.
*/
Simulator::Destroy ();
}
/////////////////////////////////////////////
///////////////// 函数定义 ///////////////////
bool
CommandSetup (int argc, char **argv)
{
CommandLine cmd;
cmd.AddValue ("SamplingPeriod", "Sampling period", nSamplingPeriod);
cmd.AddValue ("stopTime", "The time to stop", stopTime);
/* for udp-server-client application */
// cmd.AddValue ("MaxPackets", "The total packets available to be scheduled by the UDP application.", nMaxPackets);
// cmd.AddValue ("Interval", "The interval between two packet sent", nInterval);
// cmd.AddValue ("PacketSize", "The size in byte of each packet", nUdpPacketSize);
cmd.AddValue ("rtslimit", "The size of packets under which there should be RST/CST", rtslimit);
cmd.AddValue ("MaxRange", "The max range within which the STA could receive signal", MaxRange);
cmd.Parse (argc, argv);
return true;
}
void
CreateFiles ()
{
FILE *fp = fopen ("files-trad-handover/index.html", "wb");
int i;
for (i = 0; i < 500000;i++)
{
fprintf (fp, "%d\n", i);
}
fclose (fp);
}
/*
* Calculate Throughput using Flowmonitor
* 每个探针(probe)会根据四点来对包进行分类
* -- when packet is `sent`;
* -- when packet is `forwarded`;
* -- when packet is `received`;
* -- when packet is `dropped`;
* 由于包是在IP层进行track的，所以任何的四层(TCP)重传的包，都会被认为是一个新的包
*/
void
ThroughputMonitor (FlowMonitorHelper* fmhelper, Ptr<FlowMonitor> monitor,
Gnuplot2dDataset dataset)
{
double throu = 0.0;
monitor->CheckForLostPackets ();
std::map<FlowId, FlowMonitor::FlowStats> flowStats = monitor->GetFlowStats ();
/* since fmhelper is a pointer, we should use it as a pointer.
* `fmhelper->GetClassifier ()` instead of `fmhelper.GetClassifier ()`
*/
Ptr<Ipv4FlowClassifier> classifier = DynamicCast<Ipv4FlowClassifier> (fmhelper->GetClassifier ());
for (std::map<FlowId, FlowMonitor::FlowStats>::const_iterator i = flowStats.begin (); i != flowStats.end (); ++i)
{
/*
* `Ipv4FlowClassifier`
* Classifies packets by looking at their IP and TCP/UDP headers.
* FiveTuple五元组是：(source-ip, destination-ip, protocol, source-port, destination-port)
*/
/* 每个flow是根据包的五元组(协议，源IP/端口，目的IP/端口)来区分的 */
Ipv4FlowClassifier::FiveTuple t = classifier->FindFlow (i->first);
if (t.sourceAddress==clientIp && t.destinationAddress == serverIp)
{
// UDP_PROT_NUMBER = 17
// TCP_PORT_NUMBER = 6
if (17 == unsigned(t.protocol) || 6 == unsigned(t.protocol))
{
throu = i->second.rxBytes * 8.0 /
(i->second.timeLastRxPacket.GetSeconds() -
i->second.timeFirstTxPacket.GetSeconds())/1024 ;
dataset.Add (Simulator::Now().GetSeconds(), throu);
}
else
{
std::cout << "This is not UDP/TCP traffic" << std::endl;
}
}
}
/* check throughput every nSamplingPeriod second(每隔nSamplingPeriod调用依次Simulation)
* 表示每隔nSamplingPeriod时间
*/
Simulator::Schedule (Seconds(nSamplingPeriod), &ThroughputMonitor, fmhelper, monitor,
dataset);
}
void
DelayMonitor (FlowMonitorHelper* fmhelper, Ptr<FlowMonitor> monitor,
Gnuplot2dDataset dataset1)
{
uint32_t RxPacketsum = 0;
double Delaysum = 0;
double delay = 0;
monitor->CheckForLostPackets ();
std::map<FlowId, FlowMonitor::FlowStats> flowStats = monitor->GetFlowStats ();
Ptr<Ipv4FlowClassifier> classifier = DynamicCast<Ipv4FlowClassifier> (fmhelper->GetClassifier ());
for (std::map<FlowId, FlowMonitor::FlowStats>::const_iterator i = flowStats.begin (); i != flowStats.end (); ++i)
{
Ipv4FlowClassifier::FiveTuple t = classifier->FindFlow (i->first);
RxPacketsum += i->second.rxPackets;
Delaysum += i->second.delaySum.GetSeconds();
if (t.sourceAddress==clientIp && t.destinationAddress == serverIp)
{
// UDP_PROT_NUMBER = 17
// TCP_PORT_NUMBER = 6
if (17 == unsigned(t.protocol) || 6 == unsigned(t.protocol))
{
delay = Delaysum/ RxPacketsum;
dataset1.Add (Simulator::Now().GetSeconds(), delay);
}
else