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# -*- Mode:tcl; tcl-indent-level:8; tab-width:8; indent-tabs-mode:t -*-
Agent/TCP set tcpTick_ 0.1
# The default for tcpTick_ is being changed to reflect a changing reality.
Agent/TCP set rfc2988_ false
# The default for rfc2988_ is being changed to true.
#
# Copyright (c) 2001 University of Southern California.
# All rights reserved.
#
# Redistribution and use in source and binary forms are permitted
# provided that the above copyright notice and this paragraph are
# duplicated in all such forms and that any documentation, advertising
# materials, and other materials related to such distribution and use
# acknowledge that the software was developed by the University of
# Southern California, Information Sciences Institute. The name of the
# University may not be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
#
# $Header: /cvsroot/nsnam/ns-2/tcl/test/test-suite-snoop.tcl,v 1.8 2006/01/24 23:00:07 sallyfloyd Exp $
# This test suite is for validating the snoop protocol
remove-all-packet-headers ; # removes all except common
add-packet-header Flags IP TCP Snoop Arp LL Mac ; # hdrs reqd for validation
# FOR UPDATING GLOBAL DEFAULTS:
Agent/TCP set precisionReduce_ false ; # default changed on 2006/1/24.
Agent/TCP set rtxcur_init_ 6.0 ; # Default changed on 2006/01/21
Agent/TCP set updated_rttvar_ false ; # Variable added on 2006/1/21
Agent/TCP set minrto_ 1
# default changed on 10/14/2004.
Agent/TCP set singledup_ 0
# The default is being changed to 1
Agent/TCP set useHeaders_ false
# The default is being changed to useHeaders_ true.
# global options
set opt(tr) temp.rands
set opt(seed) 0
set opt(qsize) 100
set opt(ll) LL
set opt(ifq) Queue/DropTail
set opt(mac) Mac/802_3
set opt(loss) 20
Class TestSuite
proc usage {} {
global argv0
puts stderr "usage: ns $argv0 <test> "
puts "Valid Tests: simple"
exit 1
}
proc runtest {arg} {
global quiet
set quiet 0
set b [llength $arg]
if {$b == 1} {
set test $arg
} elseif {$b == 2} {
set test [lindex $arg 0]
if {[lindex $arg 1] == "QUIET"} {
set quiet 1
}
} else {
usage
}
set t [new Test/$test]
$t run
}
TestSuite instproc init {} {
global opt tracefd
$self instvar ns_
set ns_ [new Simulator]
set tracefd [open $opt(tr) w]
$ns_ trace-all $tracefd
}
TestSuite instproc finish {} {
$self instvar ns_ testName_
global quiet
$ns_ flush-trace
puts "finishing.."
exit 0
}
# simple test
#
# Network topology:
#
# A----B
# _|_(lan)
# |
# C----D
#
# A sends data to destination D
#
# B is snoop agent. The link between C and D is lossy.
#
# Why the extra node C between B and D? Because it's easier to model
# error on a point-to-point link than on a LAN in the current implementation.
Class Test/simple -superclass TestSuite
Test/simple instproc init {} {
global opt
$self instvar ns_ testName_
set testName_ simple
$self next
set A [$ns_ node]
set B [$ns_ node]
set C [$ns_ node]
set D [$ns_ node]
$ns_ duplex-link $A $B 10Mb 5ms DropTail
$ns_ duplex-link $C $D 10Mb 5ms DropTail
set lan [$ns_ make-lan [list $C] 11Mb 2ms LL $opt(ifq) $opt(mac)]
$lan addNode [list $B] 11Mb 2ms LL/LLSnoop $opt(ifq) $opt(mac)
# make the link between C and D drop $opt(loss) percent of the packets
set err [new ErrorModel]
$err drop-target [new Agent/Null]
set rand [new RandomVariable/Uniform]
$rand set min_ 0
$rand set max_ 100
$err ranvar $rand
$err set rate_ $opt(loss)
[$ns_ link $C $D] errormodule $err
# set up TCP flow from A to D
set tcp [new Agent/TCP]
set sink [new Agent/TCPSink]
$ns_ attach-agent $A $tcp
$ns_ attach-agent $D $sink
$ns_ connect $tcp $sink
set ftp [new Application/FTP]
$ftp attach-agent $tcp
# set times to start/stop actions
$ns_ at 0.1 "$ftp start"
$ns_ at 1.9 "$ftp stop"
$ns_ at 2.0 "$self finish"
}
Test/simple instproc run {} {
$self instvar ns_
puts "Starting Simulation..."
$ns_ run
}
global argv arg0
runtest $argv
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