222 lines
7.3 KiB
C++
222 lines
7.3 KiB
C++
/* -*- 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
|
|
*
|
|
*/
|
|
|
|
//
|
|
// Network topology
|
|
//
|
|
// 100Kb/s, 10ms 1Mb/s, 10ms
|
|
// n0-----------------n1-----------------n2
|
|
//
|
|
//
|
|
// - Tracing of queues and packet receptions to file
|
|
// "tcp-small-transfer.tr"
|
|
// - pcap traces also generated in the following files
|
|
// "tcp-small-transfer.pcap-$n-$i" where n and i represent node and interface numbers respectively
|
|
// Usage (e.g.): ./waf --run tcp-small-transfer
|
|
|
|
#include <ctype.h>
|
|
#include <iostream>
|
|
#include <fstream>
|
|
#include <string>
|
|
#include <cassert>
|
|
|
|
#include "ns3/command-line.h"
|
|
#include "ns3/default-value.h"
|
|
#include "ns3/ptr.h"
|
|
#include "ns3/random-variable.h"
|
|
#include "ns3/log.h"
|
|
|
|
#include "ns3/simulator.h"
|
|
#include "ns3/nstime.h"
|
|
#include "ns3/data-rate.h"
|
|
|
|
#include "ns3/ascii-trace.h"
|
|
#include "ns3/pcap-trace.h"
|
|
#include "ns3/internet-node.h"
|
|
#include "ns3/point-to-point-channel.h"
|
|
#include "ns3/point-to-point-net-device.h"
|
|
#include "ns3/ipv4-address.h"
|
|
#include "ns3/inet-socket-address.h"
|
|
#include "ns3/ipv4.h"
|
|
#include "ns3/socket.h"
|
|
#include "ns3/ipv4-route.h"
|
|
#include "ns3/point-to-point-topology.h"
|
|
#include "ns3/onoff-application.h"
|
|
#include "ns3/packet-sink.h"
|
|
#include "ns3/error-model.h"
|
|
#include "ns3/node-list.h"
|
|
|
|
#include "ns3/tcp.h"
|
|
|
|
using namespace ns3;
|
|
|
|
NS_LOG_COMPONENT_DEFINE ("TcpSmallTransfer");
|
|
|
|
void
|
|
ApplicationTraceSink (const TraceContext &context, Ptr<const Packet> packet,
|
|
const Address &addr)
|
|
{
|
|
// g_log is not declared in optimized builds
|
|
// should convert this to use of some other flag than the logging system
|
|
#ifdef NS3_LOG_ENABLE
|
|
if (!g_log.IsNoneEnabled ()) {
|
|
if (InetSocketAddress::IsMatchingType (addr) )
|
|
{
|
|
InetSocketAddress address = InetSocketAddress::ConvertFrom (addr);
|
|
std::cout << "PacketSink received size " <<
|
|
packet->GetSize () << " at time " <<
|
|
Simulator::Now ().GetSeconds () << " from address: " <<
|
|
address.GetIpv4 () << std::endl;
|
|
char buf[2000];
|
|
memcpy(buf, packet->PeekData (), packet->GetSize ());
|
|
for (uint32_t i=0; i < packet->GetSize (); i++)
|
|
{
|
|
std::cout << buf[i];
|
|
if (i && i % 60 == 0)
|
|
std::cout << std::endl;
|
|
}
|
|
std::cout << std::endl << std::endl;
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void CloseConnection (Ptr<Socket> localSocket)
|
|
{
|
|
localSocket->Close ();
|
|
}
|
|
|
|
void StartFlow(Ptr<Socket> localSocket, uint32_t nBytes,
|
|
uint16_t servPort)
|
|
{
|
|
// NS_LOG_LOGIC("Starting flow at time " << Simulator::Now ().GetSeconds ());
|
|
localSocket->Connect (InetSocketAddress ("10.1.2.2", servPort));//connect
|
|
localSocket->SetConnectCallback (MakeCallback (&CloseConnection),
|
|
MakeNullCallback<void, Ptr<Socket> > (),
|
|
MakeNullCallback<void, Ptr<Socket> > ());
|
|
//we want to close as soon as the connection is established
|
|
//the tcp state machine and outgoing buffer will assure that
|
|
//all of the data is delivered
|
|
uint8_t data[nBytes];
|
|
for(uint32_t i = 0; i < nBytes; ++i)
|
|
{
|
|
char m = toascii (97 + i % 26);
|
|
data[i] = m;
|
|
}
|
|
localSocket->Send (data, nBytes);
|
|
}
|
|
|
|
int main (int argc, char *argv[])
|
|
{
|
|
|
|
// Users may find it convenient to turn on explicit debugging
|
|
// for selected modules; the below lines suggest how to do this
|
|
// LogComponentEnable("TcpL4Protocol", LOG_LEVEL_ALL);
|
|
// LogComponentEnable("TcpSocket", LOG_LEVEL_ALL);
|
|
// LogComponentEnable("PacketSink", LOG_LEVEL_ALL);
|
|
LogComponentEnable("TcpSmallTransfer", LOG_LEVEL_ALL);
|
|
|
|
// Allow the user to override any of the defaults and the above
|
|
// Bind()s at run-time, via command-line arguments
|
|
CommandLine::Parse (argc, argv);
|
|
|
|
// Here, we will explicitly create three nodes. In more sophisticated
|
|
// topologies, we could configure a node factory.
|
|
Ptr<Node> n0 = Create<InternetNode> ();
|
|
Ptr<Node> n1 = Create<InternetNode> ();
|
|
Ptr<Node> n2 = Create<InternetNode> ();
|
|
|
|
// We create the channels first without any IP addressing information
|
|
Ptr<PointToPointChannel> channel0 =
|
|
PointToPointTopology::AddPointToPointLink (
|
|
n0, n1, DataRate(1000000), MilliSeconds(10));
|
|
|
|
// Later, we add IP addresses.
|
|
PointToPointTopology::AddIpv4Addresses (
|
|
channel0, n0, Ipv4Address("10.1.3.1"),
|
|
n1, Ipv4Address("10.1.3.2"));
|
|
|
|
Ptr<PointToPointChannel> channel1 =
|
|
PointToPointTopology::AddPointToPointLink (
|
|
n1, n2, DataRate(100000), MilliSeconds(10));
|
|
|
|
PointToPointTopology::AddIpv4Addresses (
|
|
channel1, n1, Ipv4Address("10.1.2.1"),
|
|
n2, Ipv4Address("10.1.2.2"));
|
|
|
|
// Finally, we add static routes. These three steps (Channel and
|
|
// NetDevice creation, IP Address assignment, and routing) are
|
|
// separated because there may be a need to postpone IP Address
|
|
// assignment (emulation) or modify to use dynamic routing
|
|
PointToPointTopology::AddIpv4Routes(n0, n1, channel0);
|
|
PointToPointTopology::AddIpv4Routes(n1, n2, channel1);
|
|
Ptr<Ipv4> ipv4;
|
|
ipv4 = n0->GetObject<Ipv4> ();
|
|
ipv4->SetDefaultRoute (Ipv4Address ("10.1.3.2"), 1);
|
|
ipv4 = n2->GetObject<Ipv4> ();
|
|
ipv4->SetDefaultRoute (Ipv4Address ("10.1.2.1"), 1);
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// Simulation 1
|
|
//
|
|
// Send 2000 bytes over a connection to server port 500 at time 0
|
|
// Should observe SYN exchange, two data segments, and FIN exchange
|
|
//
|
|
///////////////////////////////////////////////////////////////////////////
|
|
|
|
int nBytes = 2000;
|
|
uint16_t servPort = 500;
|
|
|
|
Ptr<SocketFactory> socketFactory =
|
|
n0->GetObject<SocketFactory> ();
|
|
Ptr<Socket> localSocket = socketFactory->CreateSocket ();
|
|
localSocket->Bind ();
|
|
|
|
// Create a packet sink to receive these packets
|
|
Ptr<PacketSink> sink = Create<PacketSink> (
|
|
n2,
|
|
InetSocketAddress (Ipv4Address::GetAny (), servPort),
|
|
"Tcp");
|
|
sink->Start (Seconds (0.0));
|
|
sink->Stop (Seconds (100.0));
|
|
|
|
Simulator::Schedule(Seconds(0), &StartFlow, localSocket, nBytes,
|
|
servPort);
|
|
|
|
// Configure tracing of all enqueue, dequeue, and NetDevice receive events
|
|
// Trace output will be sent to the simple-examples.tr file
|
|
AsciiTrace asciitrace ("tcp-small-transfer.tr");
|
|
asciitrace.TraceAllQueues ();
|
|
asciitrace.TraceAllNetDeviceRx ();
|
|
|
|
|
|
// Also configure some tcpdump traces; each interface will be traced
|
|
// The output files will be named
|
|
// simple-examples.pcap-<nodeId>-<interfaceId>
|
|
// and can be read by the "tcpdump -r" command (use "-tt" option to
|
|
// display timestamps correctly)
|
|
PcapTrace pcaptrace ("tcp-small-transfer.pcap");
|
|
pcaptrace.TraceAllIp ();
|
|
|
|
NodeList::Connect ("/nodes/*/applications/*/rx", MakeCallback (&ApplicationTraceSink));
|
|
|
|
Simulator::StopAt (Seconds(1000));
|
|
Simulator::Run ();
|
|
Simulator::Destroy ();
|
|
}
|