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#Copyright (c) 1997 Regents of the University of California.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 3. All advertising materials mentioning features or use of this software
# must display the following acknowledgement:
# This product includes software developed by the Computer Systems
# Engineering Group at Lawrence Berkeley Laboratory.
# 4. Neither the name of the University nor of the Laboratory may be used
# to endorse or promote products derived from this software without
# specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# Each agent keeps track of what messages it has seen
# and only forwards those which it hasn't seen before.
# Each message is of the form "ID:DATA" where ID is some arbitrary
# message identifier and DATA is the payload. In order to reduce
# memory usage, the agent stores only the message ID.
# Note that I have not put in any mechanism to expire old message IDs
# from the list of seen messages. There also isn't any mechanism
# for assigning message IDs.
Mac/Simple set bandwidth_ 1Mb
set MESSAGE_PORT 42
set BROADCAST_ADDR -1
# variables which control the number of nodes and how they're grouped
# (see topology creation code below)
set group_size 4
set num_groups 6
set num_nodes [expr $group_size * $num_groups]
set val(chan) Channel/WirelessChannel ;#Channel Type
set val(prop) Propagation/TwoRayGround ;# radio-propagation model
set val(netif) Phy/WirelessPhy ;# network interface type
#set val(mac) Mac/802_11 ;# MAC type
#set val(mac) Mac ;# MAC type
set val(mac) Mac/Simple
set val(ifq) Queue/DropTail/PriQueue ;# interface queue type
set val(ll) LL ;# link layer type
set val(ant) Antenna/OmniAntenna ;# antenna model
set val(ifqlen) 50 ;# max packet in ifq
# DumbAgent, AODV, and DSDV work. DSR is broken
set val(rp) DumbAgent
#set val(rp) DSDV
#set val(rp) DSR
#set val(rp) AODV
# size of the topography
set val(x) [expr 120*$group_size + 500]
set val(y) [expr 240*$num_groups + 200]
set ns [new Simulator]
set f [open wireless-flooding-$val(rp).tr w]
$ns trace-all $f
set nf [open wireless-flooding-$val(rp).nam w]
$ns namtrace-all-wireless $nf $val(x) $val(y)
$ns use-newtrace
# set up topography object
set topo [new Topography]
$topo load_flatgrid $val(x) $val(y)
#
# Create God
#
create-god $num_nodes
set chan_1_ [new $val(chan)]
$ns node-config -adhocRouting $val(rp) \
-llType $val(ll) \
-macType $val(mac) \
-ifqType $val(ifq) \
-ifqLen $val(ifqlen) \
-antType $val(ant) \
-propType $val(prop) \
-phyType $val(netif) \
-topoInstance $topo \
-agentTrace ON \
-routerTrace OFF \
-macTrace ON \
-movementTrace OFF \
-channel $chan_1_
# subclass Agent/MessagePassing to make it do flooding
Class Agent/MessagePassing/Flooding -superclass Agent/MessagePassing
Agent/MessagePassing/Flooding instproc recv {source sport size data} {
$self instvar messages_seen node_
global ns BROADCAST_ADDR
# extract message ID from message
set message_id [lindex [split $data ":"] 0]
puts "\nNode [$node_ node-addr] got message $message_id\n"
if {[lsearch $messages_seen $message_id] == -1} {
lappend messages_seen $message_id
$ns trace-annotate "[$node_ node-addr] received {$data} from $source"
$ns trace-annotate "[$node_ node-addr] sending message $message_id"
$self sendto $size $data $BROADCAST_ADDR $sport
} else {
$ns trace-annotate "[$node_ node-addr] received redundant message $message_id from $source"
}
}
Agent/MessagePassing/Flooding instproc send_message {size message_id data port} {
$self instvar messages_seen node_
global ns MESSAGE_PORT BROADCAST_ADDR
lappend messages_seen $message_id
$ns trace-annotate "[$node_ node-addr] sending message $message_id"
$self sendto $size "$message_id:$data" $BROADCAST_ADDR $port
}
# create a bunch of nodes
for {set i 0} {$i < $num_nodes} {incr i} {
set n($i) [$ns node]
$n($i) set Y_ [expr 230*floor($i/$group_size) + 160*(($i%$group_size)>=($group_size/2))]
$n($i) set X_ [expr (90*$group_size)*($i/$group_size%2) + 200*($i%($group_size/2))]
$n($i) set Z_ 0.0
$ns initial_node_pos $n($i) 20
}
# attach a new Agent/MessagePassing/Flooding to each node on port $MESSAGE_PORT
for {set i 0} {$i < $num_nodes} {incr i} {
set a($i) [new Agent/MessagePassing/Flooding]
$n($i) attach $a($i) $MESSAGE_PORT
$a($i) set messages_seen {}
}
# now set up some events
$ns at 0.2 "$a(1) send_message 200 1 {first message} $MESSAGE_PORT"
$ns at 0.4 "$a([expr $num_nodes/2]) send_message 600 2 {some big message} $MESSAGE_PORT"
$ns at 0.7 "$a([expr $num_nodes-2]) send_message 200 3 {another one} $MESSAGE_PORT"
$ns at 1.0 "finish"
proc finish {} {
global ns f nf val
$ns flush-trace
close $f
close $nf
# puts "running nam..."
exec nam wireless-flooding-$val(rp).nam &
exit 0
}
$ns run
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