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/* -*- 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.");  }

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