int
main (int argc, char *argv[])
{
Time::SetResolution (Time::NS);
LogComponentEnable ("UdpEchoClientApplication", LOG_LEVEL_INFO);
LogComponentEnable ("UdpEchoServerApplication", LOG_LEVEL_INFO);
NodeContainer nodes;
nodes.Create (2);
PointToPointHelper pointToPoint;
pointToPoint.SetDeviceAttribute ("DataRate", StringValue ("5Mbps"));
pointToPoint.SetChannelAttribute ("Delay", StringValue ("2ms"));
NetDeviceContainer devices;
devices = pointToPoint.Install (nodes);
InternetStackHelper stack;
stack.Install (nodes);
Ipv4AddressHelper address;
address.SetBase ("10.1.1.0", "255.255.255.0");
Ipv4InterfaceContainer interfaces = address.Assign (devices);
UdpEchoServerHelper echoServer (9);
ApplicationContainer serverApps = echoServer.Install (nodes.Get (1));
serverApps.Start (Seconds (1.0));
serverApps.Stop (Seconds (10.0));
UdpEchoClientHelper echoClient (interfaces.GetAddress (1), 9);
echoClient.SetAttribute ("MaxPackets", UintegerValue (1));
echoClient.SetAttribute ("Interval", TimeValue (Seconds (1.0)));
echoClient.SetAttribute ("PacketSize", UintegerValue (1024));
ApplicationContainer clientApps = echoClient.Install (nodes.Get (0));
clientApps.Start (Seconds (2.0));
clientApps.Stop (Seconds (10.0));
Simulator::Run ();
Simulator::Destroy ();
return 0;
}
inline void RandomizeProducers (Ptr<UniformRandomVariable> uniVar, std::string serverDatasetsPath,
NodeContainer& nodes, PointToPointHelper& p2p){
RouterEndPointMap pr;
pr.clear();
size_t prodIndex = 0;
while (prodIndex < ns3::N_PRODUCERS){
size_t rtrID = uniVar->GetInteger (0, ns3::N_GEANT_ROUTERS-1);
if(prodIndex==0){
pr[prodIndex] = rtrID;
++prodIndex;
}
else{
size_t rtrID1=0;
do{
rtrID1 = uniVar->GetInteger (0, ns3::N_GEANT_ROUTERS-1);
}while(pr.find(rtrID1)!= pr.end());
pr[prodIndex] = rtrID1;
++prodIndex;
}
}//while
////////////////////////////////////////////////////////////////
//****HERE I ATTACH PRODUCERS TO SOME OF ROUTERS RANDOMLY*****//
///////////////////////////////////////////////////////////////
ndn::AppHelper producerHelper("ns3::ndn::Producer");
// Producer will reply to all requests starting with /videos/myvideos/video1
producerHelper.SetPrefix("/");
producerHelper.SetAttribute("PayloadSize", StringValue(PAYLOAD_SIZE));
std::string strID="id";
//choose randomly the producers
NS_LOG_UNCOND("from among "<<ns3::N_PRODUCERS<<" producers:");
for (RouterEndPointMap::iterator it= pr.begin(); it!=pr.end(); it++) {
p2p.SetDeviceAttribute ("DataRate", StringValue (ns3::PROD_LINK_DATA_RATE));
p2p.SetChannelAttribute ("Delay", StringValue (ns3::PROD_LINK_DELAY));
NS_LOG_UNCOND("PRODUCER "<<it->first<<" was attached to id"<<it->second<<" lINK DataRate= "<<ns3::PROD_LINK_DATA_RATE<<" and LINK Delay = "<<ns3::PROD_LINK_DELAY);
p2p.Install(nodes.Get(it->first + ns3::N_TotalClients), Names::Find<Node>(strID + std::to_string(it->second)));
producerHelper.Install(nodes.Get(it->first + ns3::N_TotalClients)).Start (Seconds(ns3::PROD_START));
}//for
}//FUNCTION: RandomizeProducers
void
Ns3TcpNoDelayTestCase::DoRun (void)
{
uint16_t sinkPort = 50000;
double sinkStopTime = 8; // sec; will trigger Socket::Close
double writerStopTime = 5; // sec; will trigger Socket::Close
double simStopTime = 10; // sec
Time sinkStopTimeObj = Seconds (sinkStopTime);
Time writerStopTimeObj = Seconds (writerStopTime);
Time simStopTimeObj= Seconds (simStopTime);
Ptr<Node> n0 = CreateObject<Node> ();
Ptr<Node> n1 = CreateObject<Node> ();
PointToPointHelper pointToPoint;
pointToPoint.SetDeviceAttribute ("DataRate", StringValue ("5Mbps"));
pointToPoint.SetChannelAttribute ("Delay", StringValue ("2ms"));
NetDeviceContainer devices;
devices = pointToPoint.Install (n0, n1);
InternetStackHelper internet;
internet.InstallAll ();
Ipv4AddressHelper address;
address.SetBase ("10.1.1.0", "255.255.255.252");
Ipv4InterfaceContainer ifContainer = address.Assign (devices);
Ptr<SocketWriter> socketWriter = CreateObject<SocketWriter> ();
Address sinkAddress (InetSocketAddress (ifContainer.GetAddress (1), sinkPort));
socketWriter->Setup (n0, sinkAddress);
n0->AddApplication (socketWriter);
socketWriter->SetStartTime (Seconds (0.));
socketWriter->SetStopTime (writerStopTimeObj);
PacketSinkHelper sink ("ns3::TcpSocketFactory",
InetSocketAddress (Ipv4Address::GetAny (), sinkPort));
ApplicationContainer apps = sink.Install (n1);
// Start the sink application at time zero, and stop it at sinkStopTime
apps.Start (Seconds (0.0));
apps.Stop (sinkStopTimeObj);
Config::Connect ("/NodeList/*/ApplicationList/*/$ns3::PacketSink/Rx",
MakeCallback (&Ns3TcpNoDelayTestCase::SinkRx, this));
// Enable or disable TCP no delay option
Config::SetDefault ("ns3::TcpSocket::TcpNoDelay", BooleanValue (m_noDelay));
// Connect the socket writer
Simulator::Schedule (Seconds (1), &SocketWriter::Connect, socketWriter);
// Write 5 packets to get some bytes in flight and some acks going
Simulator::Schedule (Seconds (2), &SocketWriter::Write, socketWriter, 2680);
m_inputs.Add (536);
m_inputs.Add (536);
m_inputs.Add (536);
m_inputs.Add (536);
m_inputs.Add (536);
// Write one byte after 10 ms to ensure that some data is outstanding
// and the window is big enough
Simulator::Schedule (Seconds (2.010), &SocketWriter::Write, socketWriter, 1);
// If Nagle is not enabled, i.e. no delay is on, add an input for a 1-byte
// packet to be received
if (m_noDelay)
{
m_inputs.Add (1);
}
// One ms later, write 535 bytes, i.e. one segment size - 1
Simulator::Schedule (Seconds (2.012), &SocketWriter::Write, socketWriter, 535);
// If Nagle is not enabled, add an input for a 535 byte packet,
// otherwise, we should get a single "full" packet of 536 bytes
if (m_noDelay)
{
m_inputs.Add (535);
}
else
{
m_inputs.Add (536);
}
// Close down the socket
Simulator::Schedule (writerStopTimeObj, &SocketWriter::Close, socketWriter);
if (m_writeResults)
{
std::ostringstream oss;
if (m_noDelay)
{
oss << "tcp-no-delay-on-test-case";
pointToPoint.EnablePcapAll (oss.str ());
}
else
{
oss << "tcp-no-delay-off-test-case";
pointToPoint.EnablePcapAll (oss.str ());
}
}
Simulator::Stop (simStopTimeObj);
Simulator::Run ();
Simulator::Destroy ();
// Compare inputs and outputs
NS_TEST_ASSERT_MSG_EQ (m_inputs.GetN (), m_responses.GetN (), "Incorrect number of expected receive events");
for (uint32_t i = 0; i < m_responses.GetN (); i++)
{
uint32_t in = m_inputs.Get (i);
uint32_t out = m_responses.Get (i);
NS_TEST_ASSERT_MSG_EQ (in, out, "Mismatch: expected " << in << " bytes, got " << out << " bytes");
}
}
int
main (int argc, char *argv[])
{
//
// Set up some default values for the simulation.
//
Config::SetDefault ("ns3::OnOffApplication::PacketSize", UintegerValue (137));
// ??? try and stick 15kb/s into the data rate
Config::SetDefault ("ns3::OnOffApplication::DataRate", StringValue ("14kb/s"));
//
// Default number of nodes in the star. Overridable by command line argument.
//
uint32_t nSpokes = 8;
CommandLine cmd;
cmd.AddValue ("nSpokes", "Number of nodes to place in the star", nSpokes);
cmd.Parse (argc, argv);
NS_LOG_INFO ("Build star topology.");
PointToPointHelper pointToPoint;
pointToPoint.SetDeviceAttribute ("DataRate", StringValue ("5Mbps"));
pointToPoint.SetChannelAttribute ("Delay", StringValue ("2ms"));
PointToPointStarHelper star (nSpokes, pointToPoint);
NS_LOG_INFO ("Install internet stack on all nodes.");
InternetStackHelper internet;
star.InstallStack (internet);
NS_LOG_INFO ("Assign IP Addresses.");
star.AssignIpv4Addresses (Ipv4AddressHelper ("10.1.1.0", "255.255.255.0"));
NS_LOG_INFO ("Create applications.");
//
// Create a packet sink on the star "hub" to receive packets.
//
uint16_t port = 50000;
Address hubLocalAddress (InetSocketAddress (Ipv4Address::GetAny (), port));
PacketSinkHelper packetSinkHelper ("ns3::TcpSocketFactory", hubLocalAddress);
ApplicationContainer hubApp = packetSinkHelper.Install (star.GetHub ());
hubApp.Start (Seconds (1.0));
hubApp.Stop (Seconds (10.0));
//
// Create OnOff applications to send TCP to the hub, one on each spoke node.
//
OnOffHelper onOffHelper ("ns3::TcpSocketFactory", Address ());
onOffHelper.SetAttribute ("OnTime", StringValue ("ns3::ConstantRandomVariable[Constant=1]"));
onOffHelper.SetAttribute ("OffTime", StringValue ("ns3::ConstantRandomVariable[Constant=0]"));
ApplicationContainer spokeApps;
for (uint32_t i = 0; i < star.SpokeCount (); ++i)
{
AddressValue remoteAddress (InetSocketAddress (star.GetHubIpv4Address (i), port));
onOffHelper.SetAttribute ("Remote", remoteAddress);
spokeApps.Add (onOffHelper.Install (star.GetSpokeNode (i)));
}
spokeApps.Start (Seconds (1.0));
spokeApps.Stop (Seconds (10.0));
NS_LOG_INFO ("Enable static global routing.");
//
// Turn on global static routing so we can actually be routed across the star.
//
Ipv4GlobalRoutingHelper::PopulateRoutingTables ();
NS_LOG_INFO ("Enable pcap tracing.");
//
// Do pcap tracing on all point-to-point devices on all nodes.
//
pointToPoint.EnablePcapAll ("star");
NS_LOG_INFO ("Run Simulation.");
Simulator::Run ();
Simulator::Destroy ();
NS_LOG_INFO ("Done.");
return 0;
}