以下是我在ns3中编写的用于使用TCP发送文件的代码。我已经使用了移动模型和packetsinkhelper类以及bulksendHelper lass。以下代码已成功构建并创建了跟踪文件，但生成的跟踪文件显示为空。
#include "ns3/lte-helper.h"
#include "ns3/epc-helper.h"
#include "ns3/core-module.h"
#include "ns3/network-module.h"
#include "ns3/ipv4-global-routing-helper.h"
#include "ns3/internet-module.h"
#include "ns3/mobility-module.h"
#include "ns3/lte-module.h"
#include "ns3/applications-module.h"
#include "ns3/point-to-point-helper.h"
#include "ns3/config-store.h"
#include "ns3/packet-sink.h"
//#include "ns3/gtk-config-store.h"
using namespace ns3;
/**
* Sample simulation script for LTE+EPC. It instantiates several eNodeB,
* attaches one UE per eNodeB starts a flow for each UE to and from a remote host.
* It also starts yet another flow between each UE pair.
*/
int
main (int argc, char *argv[])
{
uint16_t numberOfNodes = 10;
double simTime = 1.1;
double distance = 60.0;
uint32_t maxBytes = 0;
// Command line arguments
CommandLine cmd;
cmd.AddValue("numberOfNodes", "Number of eNodeBs + UE pairs", numberOfNodes);
cmd.AddValue("simTime", "Total duration of the simulation [s])", simTime);
cmd.AddValue("distance", "Distance between eNBs [m]", distance);
cmd.AddValue ("maxBytes","Total number of bytes for application to send", maxBytes);
cmd.Parse(argc, argv);
Ptr<LteHelper> lteHelper = CreateObject<LteHelper> ();
Ptr<PointToPointEpcHelper> epcHelper = CreateObject<PointToPointEpcHelper> ();
lteHelper->SetEpcHelper (epcHelper);
ConfigStore inputConfig;
inputConfig.ConfigureDefaults();
// parse again so you can override default values from the command line
cmd.Parse(argc, argv);
Ptr<Node> pgw = epcHelper->GetPgwNode ();
// Create a single RemoteHost
NodeContainer remoteHostContainer;
remoteHostContainer.Create (1);
Ptr<Node> remoteHost = remoteHostContainer.Get (0);
InternetStackHelper internet;
internet.Install (remoteHostContainer);
// Create the Internet
PointToPointHelper p2ph;
p2ph.SetDeviceAttribute ("DataRate", DataRateValue (DataRate ("100Gb/s")));
p2ph.SetDeviceAttribute ("Mtu", UintegerValue (1500));
p2ph.SetChannelAttribute ("Delay", TimeValue (Seconds (0.010)));
NetDeviceContainer internetDevices = p2ph.Install (pgw, remoteHost);
Ipv4AddressHelper ipv4h;
ipv4h.SetBase ("1.0.0.0", "255.0.0.0");
Ipv4InterfaceContainer internetIpIfaces = ipv4h.Assign (internetDevices);
// interface 0 is localhost, 1 is the p2p device
Ipv4Address remoteHostAddr = internetIpIfaces.GetAddress (1);
Ipv4StaticRoutingHelper ipv4RoutingHelper;
Ptr<Ipv4StaticRouting> remoteHostStaticRouting = ipv4RoutingHelper.GetStaticRouting (remoteHost->GetObject<Ipv4> ());
remoteHostStaticRouting->AddNetworkRouteTo (Ipv4Address ("7.0.0.0"), Ipv4Mask ("255.0.0.0"), 1);
NodeContainer ueNodes;
NodeContainer enbNodes;
enbNodes.Create(numberOfNodes);
ueNodes.Create(numberOfNodes);
// Install Mobility Model
Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator> ();
for (uint16_t i = 0; i < numberOfNodes; i++)
{
positionAlloc->Add (Vector(distance * i, 0, 0));
}
MobilityHelper mobility;
mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
mobility.SetPositionAllocator(positionAlloc);
mobility.Install(enbNodes);
mobility.Install(ueNodes);
// Install LTE Devices to the nodes
NetDeviceContainer enbLteDevs = lteHelper->InstallEnbDevice (enbNodes);
NetDeviceContainer ueLteDevs = lteHelper->InstallUeDevice (ueNodes);
// Install the IP stack on the UEs
internet.Install (ueNodes);
Ipv4InterfaceContainer ueIpIface;
ueIpIface = epcHelper->AssignUeIpv4Address (NetDeviceContainer (ueLteDevs));
// Assign IP address to UEs, and install applications
for (uint32_t u = 0; u < ueNodes.GetN (); ++u)
{
Ptr<Node> ueNode = ueNodes.Get (u);
// Set the default gateway for the UE
Ptr<Ipv4StaticRouting> ueStaticRouting = ipv4RoutingHelper.GetStaticRouting (ueNode->GetObject<Ipv4> ());
ueStaticRouting->SetDefaultRoute (epcHelper->GetUeDefaultGatewayAddress (), 1);
}
// Attach one UE per eNodeB
for (uint16_t i = 0; i < numberOfNodes; i++)
{
lteHelper->Attach (ueLteDevs.Get(i), enbLteDevs.Get(i));
// side effect: the default EPS bearer will be activated
}
// Install and start applications on UEs and remote host
uint16_t dlPort = 1234;
uint16_t ulPort = 2000;
uint16_t otherPort = 3000;
ApplicationContainer clientApps;
ApplicationContainer serverApps;
for (uint32_t u = 0; u < ueNodes.GetN (); ++u)
{
++ulPort;
++otherPort;
PacketSinkHelper dlPacketSinkHelper ("ns3::TcpSocketFactory", InetSocketAddress (Ipv4Address::GetAny (), dlPort));
PacketSinkHelper ulPacketSinkHelper ("ns3::TcpSocketFactory", InetSocketAddress (Ipv4Address::GetAny (), ulPort));
PacketSinkHelper packetSinkHelper ("ns3::TcpSocketFactory", InetSocketAddress (Ipv4Address::GetAny (), otherPort));
serverApps.Add (dlPacketSinkHelper.Install (ueNodes.Get(u)));
serverApps.Add (ulPacketSinkHelper.Install (remoteHost));
serverApps.Add (packetSinkHelper.Install (ueNodes.Get(u)));
BulkSendHelper dlClient ("ns3::TcpSocketFactory", InetSocketAddress(ueIpIface.GetAddress (u), dlPort));
dlClient.SetAttribute ("MaxBytes", UintegerValue(maxBytes));
BulkSendHelper ulClient ("ns3::TcpSocketFactory",InetSocketAddress(remoteHostAddr, ulPort));
ulClient.SetAttribute ("MaxBytes", UintegerValue(maxBytes));
BulkSendHelper client ("ns3::TcpSocketFactory",InetSocketAddress(ueIpIface.GetAddress (u), otherPort));
client.SetAttribute ("MaxBytes", UintegerValue(maxBytes));
clientApps.Add (dlClient.Install (remoteHost));
clientApps.Add (ulClient.Install (ueNodes.Get(u)));
if (u+1 < ueNodes.GetN ())
{
clientApps.Add (client.Install (ueNodes.Get(u+1)));
}
else
{
clientApps.Add (client.Install (ueNodes.Get(0)));
}
}
serverApps.Start (Seconds (0.01));
clientApps.Start (Seconds (0.01));
serverApps.Stop (Seconds (10.0));
clientApps.Stop (Seconds (10.0));
lteHelper->EnableTraces ();
// Uncomment to enable PCAP tracing
//p2ph.EnablePcapAll("lena-epc-first");
Simulator::Stop(Seconds(simTime));
Simulator::Run();
/*GtkConfigStore config;
config.ConfigureAttributes();*/
Simulator::Destroy();
return 0;
}
请查看上面的代码，并建议跟踪文件中获取的输出是否缺少任何内容。