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c++中使用ns3开发的代码实例

2020年07月14日  | 移动技术网IT编程  | 我要评论

/* -*- 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
*/

#include <iostream>
#include <fstream>
#include <string>
#include <cassert>
#include "ns3/core-module.h"
#include "ns3/network-module.h"
#include "ns3/csma-module.h"
#include "ns3/internet-module.h"
#include "ns3/point-to-point-module.h"
#include "ns3/applications-module.h"
#include "ns3/ipv4-global-routing-helper.h"
#include "ns3/netanim-module.h"
using namespace ns3;
NS_LOG_COMPONENT_DEFINE ("DynamicGlobalRoutingExample");
int main (int argc, char *argv[])
{
// 配置全局路由算法的参数。The below value configures the default behavior of global routing.
// 默认情况下是禁用的，相应借口事件时候，设为true
Config::SetDefault ("ns3::Ipv4GlobalRouting::RespondToInterfaceEvents", BooleanValue (true));

CommandLine cmd;
cmd.Parse (argc, argv);
//创建节点
NS_LOG_INFO ("Create nodes.");
NodeContainer c;
c.Create (15);
NodeContainer n0n2 = NodeContainer (c.Get (0), c.Get (2));
NodeContainer n1n2 = NodeContainer (c.Get (1), c.Get (2));
NodeContainer n5n6 = NodeContainer (c.Get (5), c.Get (6));
NodeContainer n1n6 = NodeContainer (c.Get (1), c.Get (6));
NodeContainer n2345 = NodeContainer (c.Get (2), c.Get (3), c.Get (4), c.Get (5));

InternetStackHelper internet;
internet.Install (c);

// 创建第一次没有任何ip寻址信息的信道
NS_LOG_INFO ("Create channels.");
PointToPointHelper p2p;
p2p.SetDeviceAttribute ("DataRate", StringValue ("5Mbps"));
p2p.SetChannelAttribute ("Delay", StringValue ("2ms"));
NetDeviceContainer d0d2 = p2p.Install (n0n2);
NetDeviceContainer d1d6 = p2p.Install (n1n6);

NetDeviceContainer d1d2 = p2p.Install (n1n2);

p2p.SetDeviceAttribute ("DataRate", StringValue ("1500kbps"));
p2p.SetChannelAttribute ("Delay", StringValue ("10ms"));
NetDeviceContainer d5d6 = p2p.Install (n5n6);

// 创建第一次没有任何ip寻址信息的信道
CsmaHelper csma;
csma.SetChannelAttribute ("DataRate", StringValue ("5Mbps"));
csma.SetChannelAttribute ("Delay", StringValue ("2ms"));
NetDeviceContainer d2345 = csma.Install (n2345);

// 添加ip地址
NS_LOG_INFO ("Assign IP Addresses.");
Ipv4AddressHelper ipv4;
ipv4.SetBase ("10.1.1.0", "255.255.255.0");
ipv4.Assign (d0d2);

ipv4.SetBase ("10.1.2.0", "255.255.255.0");
ipv4.Assign (d1d2);

ipv4.SetBase ("10.1.3.0", "255.255.255.0");
Ipv4InterfaceContainer i5i6 = ipv4.Assign (d5d6);

ipv4.SetBase ("10.250.1.0", "255.255.255.0");
ipv4.Assign (d2345);

ipv4.SetBase ("172.16.1.0", "255.255.255.0");
Ipv4InterfaceContainer i1i6 = ipv4.Assign (d1d6);

// 创建路由器节点，初始化路由选择数据库，设置路由表节点。
Ipv4GlobalRoutingHelper::PopulateRoutingTables ();

// 创建时断时续的发送数据报应用。
NS_LOG_INFO ("Create Applications.");
uint16_t port = 9;   // Discard port (RFC 863)
OnOffHelper onoff ("ns3::UdpSocketFactory",
InetSocketAddress (i5i6.GetAddress (1), port));
onoff.SetConstantRate (DataRate ("2kbps"));
onoff.SetAttribute ("PacketSize", UintegerValue (50));

ApplicationContainer apps = onoff.Install (c.Get (1));
apps.Start (Seconds (1.0));
apps.Stop (Seconds (10.0));

OnOffHelper onoff2 ("ns3::UdpSocketFactory",
InetSocketAddress (i1i6.GetAddress (1), port));
onoff2.SetAttribute ("OnTime", StringValue ("ns3::ConstantRandomVariable[Constant=1]"));
onoff2.SetAttribute ("OffTime", StringValue ("ns3::ConstantRandomVariable[Constant=0]"));
onoff2.SetAttribute ("DataRate", StringValue ("2kbps"));
onoff2.SetAttribute ("PacketSize", UintegerValue (50));

ApplicationContainer apps2 = onoff2.Install (c.Get (1));
apps2.Start (Seconds (11.0));
apps2.Stop (Seconds (16.0));

// 接收数据包
PacketSinkHelper sink ("ns3::UdpSocketFactory",
Address (InetSocketAddress (Ipv4Address::GetAny (), port)));
apps = sink.Install (c.Get (6));
apps.Start (Seconds (1.0));
apps.Stop (Seconds (10.0));

PacketSinkHelper sink2 ("ns3::UdpSocketFactory", Address (InetSocketAddress (Ipv4Address::GetAny (), port)));
apps2 = sink2.Install (c.Get (6));
apps2.Start (Seconds (11.0));
apps2.Stop (Seconds (16.0));

AsciiTraceHelper ascii;
Ptr<OutputStreamWrapper> stream = ascii.CreateFileStream ("dynamic-global-routing.tr");
p2p.EnableAsciiAll (stream);
csma.EnableAsciiAll (stream);
internet.EnableAsciiIpv4All (stream);
p2p.EnablePcapAll ("dynamic-global-routing");
csma.EnablePcapAll ("dynamic-global-routing", false);

Ptr<Node> n1 = c.Get (1);
Ptr<Ipv4> ipv41 = n1->GetObject<Ipv4> ();

uint32_t ipv4ifIndex1 = 2;

Simulator::Schedule (Seconds (2),&Ipv4::SetDown,ipv41, ipv4ifIndex1);
Simulator::Schedule (Seconds (4),&Ipv4::SetUp,ipv41, ipv4ifIndex1);

Ptr<Node> n6 = c.Get (6);
Ptr<Ipv4> ipv46 = n6->GetObject<Ipv4> ();

uint32_t ipv4ifIndex6 = 2;
Simulator::Schedule (Seconds (6),&Ipv4::SetDown,ipv46, ipv4ifIndex6);
Simulator::Schedule (Seconds (8),&Ipv4::SetUp,ipv46, ipv4ifIndex6);

Simulator::Schedule (Seconds (12),&Ipv4::SetDown,ipv41, ipv4ifIndex1);
Simulator::Schedule (Seconds (14),&Ipv4::SetUp,ipv41, ipv4ifIndex1);

// 查探路由表
Ipv4GlobalRoutingHelper g;
Ptr<OutputStreamWrapper> routingStream = Create<OutputStreamWrapper> ("dynamic-global-routing.routes", std::ios::out);
g.PrintRoutingTableAllAt (Seconds (12), routingStream);
//设置生成xml文件，并确定各个节点的位置
AnimationInterface animsd("myfirst.xml");

//开始仿真
NS_LOG_INFO ("Run Simulation.");
Simulator::Run ();
Simulator::Destroy ();
NS_LOG_INFO ("Done.");
}

本文地址：https://blog.csdn.net/qq_48933676/article/details/107301513

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