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add PacketSinks, change port number to UDP discard port, fix comment on onoff-application, delete logic for setting a default route

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This commit is contained in:
Tom Henderson
2007-09-14 15:57:49 -07:00
parent bba1cb3859
commit 7bf7f4bbe5
1 changed files with 29 additions and 18 deletions
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47
examples/csma-broadcast.cc
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@@ -24,8 +24,8 @@
// | |
// ==========
//
// n0 originates UDP broadcast to 255.255.255.255, which is replicated
// and received on both n1 and n2
// n0 originates UDP broadcast to 255.255.255.255/discard port, which
// is replicated and received on both n1 and n2
#include <iostream>
#include <fstream>
@@ -56,6 +56,7 @@
#include "ns3/socket.h"
#include "ns3/ipv4-route.h"
#include "ns3/onoff-application.h"
#include "ns3/packet-sink.h"
using namespace ns3;
@@ -87,10 +88,10 @@ main (int argc, char *argv[])
LogComponentEnable("ArpIpv4Interface", LOG_LEVEL_ALL);
LogComponentEnable("Ipv4LoopbackInterface", LOG_LEVEL_ALL);
LogComponentEnable("OnOffApplication", LOG_LEVEL_ALL);
// Enable the below logging command to see the packets being received
LogComponentEnable("PacketSinkApplication", LOG_LEVEL_ALL);
LogComponentEnable("UdpEchoClientApplication", LOG_LEVEL_ALL);
LogComponentEnable("UdpEchoServerApplication", LOG_LEVEL_ALL);
#endif
// Set up some default values for the simulation. Use the Bind()
// technique to tell the system what subclass of Queue to use,
// and what the queue limit is
@@ -145,31 +146,41 @@ main (int argc, char *argv[])
CsmaIpv4Topology::AddIpv4Address (
n2, n2ifIndex, Ipv4Address("192.168.1.2"), Ipv4Mask("255.255.255.0"));
// XXX Is this the right thing to do?
//
// The OnOff application uses a connected socket. This socket needs to be
// able to figure out which interface to use as the source address for
// packets. When there's one interface, this isn't too hard, but node zero
// has two interfaces, and limited broadcasts will be sent out both of those
// interfaces. We need to provide some way to disambiguate the choice.
// If we supply a default route, the specified interface will be chosen.
Ptr<Ipv4> ipv4 = n0->QueryInterface<Ipv4> (Ipv4::iid);
ipv4->SetDefaultRoute ("192.168.1.3", n0ifIndex0);
// RFC 863 discard port indicates packet should be thrown away
// by the system. We allow this silent discard to be overridden
// by the PacketSink application.
uint16_t discard_port = 9;
// Create the OnOff application to send UDP datagrams of size
// 210 bytes at a rate of 448 Kb/s
// from n0 to n1
// 512 bytes (default) at a rate of 500 Kb/s (default) from n0
NS_LOG_INFO ("Create Applications.");
Ptr<OnOffApplication> ooff = Create<OnOffApplication> (
n0,
InetSocketAddress ("255.255.255.255", 80),
InetSocketAddress ("255.255.255.255", discard_port),
"Udp",
ConstantVariable(1),
ConstantVariable(0));
// Start the application
ooff->Start(Seconds(1.0));
ooff->Stop (Seconds(10.0));
// Create an optional packet sink to receive these packets
Ptr<PacketSink> sink = Create<PacketSink> (
n1,
InetSocketAddress (Ipv4Address::GetAny (), discard_port),
"Udp");
// Start the sink
sink->Start (Seconds (1.0));
sink->Stop (Seconds (10.0));
// Create an optional packet sink to receive these packets
sink = Create<PacketSink> (
n2,
InetSocketAddress (Ipv4Address::GetAny (), discard_port),
"Udp");
// Start the sink
sink->Start (Seconds (1.0));
sink->Stop (Seconds (10.0));
NS_LOG_INFO ("Configure Tracing.");
// Configure tracing of all enqueue, dequeue, and NetDevice receive events