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|
#!/usr/bin/ns
#source ../../../lan/ns-lan.tcl
source ../../../ex/asym/util.tcl
# set up simulation
set ns [new Simulator]
set n0 [$ns node]
set n1 [$ns node]
set n2 [$ns node]
set n3 [$ns node]
set f [open out.tr w]
$ns trace-all $f
set tcptrace [open tcp.tr w]
set sinktrace [open sink.tr w]
set redtrace [open red.tr w]
set graph 0
set connGraphFlag("") 0
set maxdelack 25
set maxburst 3
set upwin 0
set tcpTick 0.1
set ackSize 40
set rbw 28.8Kb
set rqsize 10
set qsize 10
set rgw "DropTail"
set nonfifo 0
set acksfirst false
set filteracks false
set replace_head false
set midtime 0
proc printUsage {} {
puts "Usage: "
exit
}
proc finish {ns traceall tcptrace graph connGraphFlag midtime} {
upvar $connGraphFlag graphFlag
$ns flush-trace
close $traceall
flush $tcptrace
close $tcptrace
plotgraph $graph $graphFlag $midtime
exit 0
}
# read user options and act accordingly
set count 0
while {$count < $argc} {
set arg [lindex $argv $count]
incr count 2
switch -exact '$arg' {
'-graph' {
set graph 1
incr count -1
continue
}
'-mda' {
set maxdelack [lindex $argv [expr $count-1]]
continue
}
'-acksz' {
set ackSize [lindex $argv [expr $count-1]]
continue
}
'-mb' {
set maxburst [lindex $argv [expr $count-1]]
continue
}
'-upwin' {
set upwin [lindex $argv [expr $count-1]]
continue
}
'-tk' {
set tcpTick [lindex $argv [expr $count-1]]
continue
}
'-rbw' {
set rbw [lindex $argv [expr $count-1]]
continue
}
'-rq' {
set rqsize [lindex $argv [expr $count-1]]
continue
}
'-q' {
set qsize [lindex $argv [expr $count-1]]
Queue set limit_ $qsize
continue
}
'-nonfifo' {
set nonfifo 1
incr count -1
continue
}
'-noecn' {
Agent/TCP set disable_ecn_ 1
incr count -1
continue
}
'-red' {
set rgw "RED"
incr count -1
continue
}
'-acksfirst' {
set acksfirst true
incr count -1
continue
}
'-filteracks' {
set filteracks true
incr count -1
continue
}
'-replace_head' {
set replace_head true
incr count -1
continue
}
'-mid' {
set midtime [lindex $argv [expr $count-1]]
continue
}
default {
incr count -2
}
}
switch -exact '$arg' {
'-dn' {
set direction "down"
}
'-up' {
set direction "up"
}
default {
puts "arg $arg"
printUsage
exit
}
}
incr count 1
set arg [lindex $argv $count]
switch -exact '$arg' {
'-asym' {
set type "asym"
}
'-asymsrc' {
set type "asymsrc"
}
'-reno' {
set type "reno"
}
default {
puts "arg $arg"
printUsage
exit
}
}
incr count 1
set arg [lindex $argv $count]
set startTime $arg
incr count 1
set connGraph 0
set arg [lindex $argv $count]
if { $arg == "-graph" } {
set connGraph 1
incr count 1
}
if { $direction == "down" } {
set src $n0
set dst $n3
} elseif { $direction == "up" } {
set src $n3
set dst $n0
} else {
}
if { $type == "asym" } {
set tcp [createTcpSource "TCP/Reno/Asym" $maxburst $tcpTick]
set sink [createTcpSink "TCPSink/Asym" $sinktrace $ackSize $maxdelack]
} elseif { $type == "asymsrc" } {
set tcp [createTcpSource "TCP/Reno/Asym" $maxburst $tcpTick]
set sink [createTcpSink "TCPSink" $sinktrace $ackSize]
} elseif { $type == "reno" } {
set tcp [createTcpSource "TCP/Reno" $tcpTick]
set sink [createTcpSink "TCPSink" $sinktrace $ackSize]
}
if { $direction == "up" && $upwin != 0 } {
$tcp set window_ $upwin
}
set ftp [createFtp $ns $src $tcp $dst $sink]
setupTcpTracing $tcp $tcptrace
setupGraphing $tcp $connGraph connGraphFlag
$ns at $startTime "$ftp start"
}
# topology
#
# 10Mb, 1ms 10Mb, 5ms 10Mb, 1ms
# n0 ------------ n1 ------------ n2 ------------ n3
# 28.8Kb, 50ms
#
$ns duplex-link $n0 $n1 10Mb 1ms DropTail
$ns simplex-link $n1 $n2 10Mb 5ms DropTail
$ns simplex-link $n2 $n1 $rbw 50ms $rgw
$ns duplex-link $n2 $n3 10Mb 1ms DropTail
# configure reverse bottleneck queue
configQueue $ns $n2 $n1 $rgw $redtrace $rqsize $nonfifo $acksfirst $filteracks $replace_head
# end simulation
$ns at 30.0 "finish $ns $f $tcptrace $graph connGraphFlag $midtime"
$ns run
|
