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#
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.
# 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 useHeaders_ false
# The default is being changed to useHeaders_ true.
Agent/TCP set windowInit_ 1
# The default is being changed to 2.
Agent/TCP set singledup_ 0
# The default is being changed to 1
# Copyright (c) 1998 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.
#
# This test suite is for validating sliding window
# To run all tests: test-all-sliding-window
# to run individual test:
# ns test-suite-sliding-window.tcl sliding-normal
# ns test-suite-sliding-window.tcl sliding-loss
#
# To view a list of available test to run with this script:
# ns test-suite-sliding-window.tcl
#
# Each of the tests uses 6 nodes
#
Class TestSuite
Class Test/sliding-normal -superclass TestSuite
# Simple sliding window without any packet loss
Class Test/sliding-loss -superclass TestSuite
# Simple sliding window with packet loss
proc usage {} {
global argv0
puts stderr "usage: ns $argv0 <tests> "
puts "Valid <tests> : sliding-normal sliding-loss"
exit 1
}
TestSuite instproc init {} {
$self instvar ns_ n_
set ns_ [new Simulator]
$ns_ trace-all [open temp.rands w]
$ns_ namtrace-all [open temp.rands.nam w]
# setup sliding window topology
foreach i " 0 1 2 3 4 5" {
set n_($i) [$ns_ node]
}
$ns_ duplex-link $n_(0) $n_(2) 1Mb 20ms DropTail
$ns_ duplex-link $n_(1) $n_(2) 1Mb 20ms DropTail
$ns_ duplex-link $n_(2) $n_(3) 0.5Mb 20ms DropTail
$ns_ duplex-link $n_(3) $n_(4) 1Mb 20ms DropTail
$ns_ duplex-link $n_(3) $n_(5) 1Mb 20ms DropTail
$ns_ duplex-link-op $n_(0) $n_(2) orient right-down
$ns_ duplex-link-op $n_(1) $n_(2) orient right-up
$ns_ duplex-link-op $n_(2) $n_(3) orient right
$ns_ duplex-link-op $n_(3) $n_(4) orient right-up
$ns_ duplex-link-op $n_(3) $n_(5) orient right-down
$ns_ duplex-link-op $n_(2) $n_(3) queuePos 0.5
}
TestSuite instproc finish {} {
$self instvar ns_
global quiet
$ns_ flush-trace
if { !$quiet } {
puts "running nam..."
exec nam temp.rands.nam &
}
exit 0
}
Test/sliding-normal instproc init {flag} {
$self instvar ns_ testName_ flag_
set testName_ sliding-normal
set flag_ $flag
$self next
}
Test/sliding-normal instproc run {} {
$self instvar ns_ n_
$ns_ queue-limit $n_(2) $n_(3) 50
### TCP between n_(0) & n_(4)
Agent/TCP set maxcwnd_ 8
set sliding [new Agent/TCP/SlidingWindow]
$ns_ attach-agent $n_(0) $sliding
set sink [new Agent/TCPSink/SlidingWindowSink]
$ns_ attach-agent $n_(4) $sink
$ns_ connect $sliding $sink
set ftp [new Application/FTP]
$ftp attach-agent $sliding
### CBR traffic between n_(1) & n_(5)
set udp0 [new Agent/UDP]
$ns_ attach-agent $n_(1) $udp0
set cbr0 [new Application/Traffic/CBR]
$cbr0 set packetSize_ 500
$cbr0 set interval_ 0.01
$cbr0 attach-agent $udp0
set null0 [new Agent/Null]
$ns_ attach-agent $n_(5) $null0
$ns_ connect $udp0 $null0
### setup operation
$ns_ at 0.1 "$cbr0 start"
$ns_ at 1.1 "$cbr0 stop"
$ns_ at 0.2 "$ftp start"
$ns_ at 1.1 "$ftp stop"
$ns_ at 1.2 "$self finish"
$ns_ run
}
Test/sliding-loss instproc init {flag} {
$self instvar ns_ testName_ flag_
set testName_ sliding-loss
set flag_ $flag
$self next
}
Test/sliding-loss instproc run {} {
$self instvar ns_ n_
$ns_ queue-limit $n_(2) $n_(3) 10
### TCP between n_(0) & n_(4)
Agent/TCP set maxcwnd_ 8
set sliding [new Agent/TCP/SlidingWindow]
$ns_ attach-agent $n_(0) $sliding
set sink [new Agent/TCPSink/SlidingWindowSink]
$ns_ attach-agent $n_(4) $sink
$ns_ connect $sliding $sink
set ftp [new Application/FTP]
$ftp attach-agent $sliding
### CBR traffic between n_(1) & n_(5)
set udp0 [new Agent/UDP]
$ns_ attach-agent $n_(1) $udp0
set cbr0 [new Application/Traffic/CBR]
$cbr0 attach-agent $udp0
set null0 [new Agent/Null]
$ns_ attach-agent $n_(5) $null0
$ns_ connect $udp0 $null0
### setup operation
$ns_ at 0.1 "$cbr0 start"
$ns_ at 1.1 "$cbr0 stop"
$ns_ at 0.2 "$ftp start"
$ns_ at 1.1 "$ftp stop"
$ns_ at 1.2 "$self finish"
$ns_ run
}
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
}
switch $test {
sliding-normal -
sliding-loss {
set t [new Test/$test 1]
}
default {
stderr "Unknown test $test"
exit 1
}
}
$t run
}
global argv arg0
runtest $argv
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