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#!/bin/sh
# the next line finds ns \
nshome=`dirname $0`; [ ! -x $nshome/ns ] && [ -x ../../ns ] && nshome=../..
# the next line starts ns \
export nshome; exec $nshome/ns "$0" "$@"
if [info exists env(nshome)] {
set nshome $env(nshome)
} elseif [file executable ../../ns] {
set nshome ../..
} elseif {[file executable ./ns] || [file executable ./ns.exe]} {
set nshome "[pwd]"
} else {
puts "$argv0 cannot find ns directory"
exit 1
}
set env(PATH) "$nshome/bin:$env(PATH)"
set opt(tr) out
set opt(namtr) "lantest.nam"
set opt(seed) 0
set opt(stop) 5
set opt(node) 8
set opt(qsize) 100
set opt(bw) 10Mb
set opt(delay) 1ms
set opt(ll) LL
set opt(ifq) Queue/DropTail
set opt(mac) Mac/802_3
set opt(chan) Channel
set opt(tcp) TCP/Reno
set opt(sink) TCPSink
set opt(app) FTP
proc finish {} {
global env nshome pwd
global ns opt trfd
$ns flush-trace
close $trfd
exec ../../../nam-1/nam lantest.nam
exit 0
}
proc create-trace {} {
global ns opt
if [file exists $opt(tr)] {
catch "exec rm -f $opt(tr) $opt(tr)-bw [glob $opt(tr).*]"
}
set trfd [open $opt(tr) w]
$ns trace-all $trfd
if {$opt(namtr) != ""} {
$ns namtrace-all [open $opt(namtr) w]
}
return $trfd
}
proc create-topology {} {
global ns opt
global lan node source node0
set num $opt(node)
for {set i 0} {$i < $num} {incr i} {
set node($i) [$ns node]
lappend nodelist $node($i)
}
set lan [$ns newLan $nodelist $opt(bw) $opt(delay) \
-llType $opt(ll) -ifqType $opt(ifq) \
-macType $opt(mac) -chanType $opt(chan)]
set node0 [$ns node]
$ns duplex-link $node0 $node(0) 2Mb 2ms DropTail
$ns duplex-link-op $node0 $node(0) orient right
}
## MAIN ##
set ns [new Simulator]
set trfd [create-trace]
create-topology
set tcp0 [$ns create-connection TCP/Reno $node0 TCPSink $node(7) 0]
$tcp0 set window_ 15
set ftp0 [$tcp0 attach-app FTP]
$ns at 0.0 "$ftp0 start"
$ns at $opt(stop) "finish"
$ns run
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