[ns] web traffic
Hi, I have just started to use ns-2 to demonstrate the performance of proposed our AQM controller compared to the others. Therefore, I need to construct a traffic. I use a dumbell network with FTP sources, however, I believe in that to show the performance of the proposed controller under a mix traffic will be better. My mind confused on connecting http application agent to the TCP sources. Will the http agents be connected similar to ftp connection? Is there someone to send me a simple program which generates http traffic for a dumbell network\ Thanks for all your interest and time consuming hakki
[ns] Web traffic in wireless environment
Hi all, I want to perform a simulation of a kind of XML RPC traffic. As this traffic is usually carried over HTTP in order to make the first tests I want to use any kind of web traffic envionment. I have tried with webcache over a wireless environment and the packets doesn't go out of the node (they are discarded). Does anybody know what can I use to perform such a simulation of web traffic over wireless? All my nodes are wireless and will act as servers and clients (whenever possible). TA. Jorge
[ns] Web traffic simulator
HI, ns-users
my web simulator as following. I want get a process of getting only one
page and finish. and I will analyse the latency of getting a web, the
throughput, loss, and so on. but the operation of getting web page run from the
beginning to the end. How can I do. thanks !
# Initial setup
source /home/ns2/ns-allinone-2.28/ns-2.28/tcl/http/http-mod.tcl
#Create a simulator object
set ns [new Simulator]
$ns color 0 blue ;# Set colors to display packets
$ns color 1 red
#Open the trace file
set p2p_tracefd [open http.tr w]
$ns trace-all $p2p_tracefd
#Open the nam trace file
set p2p_namfd [open http.nam w]
$ns namtrace-all $p2p_namfd
##
#set the default parameter
##
set m 1;##set the
number m of short-lived web
set u 10Mb; ##set the capacity of
the bottleneck link
set Ltn 10ms; ##set the link RTT of
long-lived tcp
set Ltm 20ms; ##set the link RTT of
short-lived tcp
##
#Create the nodes and links
#
set N0 [$ns node]
set r [$ns node]
$N0 label N0
$r label route
for {set j 1} {$j=$m} {incr j} {
set Nt($j) [$ns node]
$Nt($j) label Nt$j
}
#Create a duplex link between the nodes
$ns duplex-link $N0 $r $u 1ms RED
$ns duplex-link-op $N0 $r color pink
for {set l 1} {$l=$m} {incr l} {
$ns duplex-link $r $Nt($l) $u $Ltm RED
$ns duplex-link-op $r $Nt($l) color green
}
##
#set the short-lived web flow
#
$ns set src_ [list 2]
$ns set dst_ [list 0]
## Number of Pages per Session
set numPage 1
set httpSession1 [new HttpSession $ns $numPage [$ns picksrc]]
set httpSession2 [new HttpSession $ns $numPage [$ns picksrc]]
$httpSession1 setDistribution interPage_ Exponential 30 ;#in sec
$httpSession1 setDistribution pageSize_ Constant 1 ;# number of objects/page
$httpSession1 createPage
$httpSession1 setDistribution interObject_ Exponential 0.01 ;# in sec
$httpSession1 setDistribution objectSize_ ParetoII 10 1.2 ;# number of packets
# uses default
$httpSession2 createPage
$ns at 2.1 $httpSession1 start ;# in sec as well
$ns at 2.2 $httpSession2 start
###
#set the start and stop of the produce
##
$ns at 15 finish
#Define a 'finish' procedure of p2p nam
proc finish {} {
global ns p2p_tracefd p2p_namfd
$ns flush-trace
close $p2p_tracefd
close $p2p_namfd ;
exec nam http.nam ;
puts finishing the ns
exit 0
}
#Run the simulation
$ns run
yaya
[EMAIL PROTECTED]
2006-09-13
[ns] Web traffic simulator that can allow multiple client to one server
Hi guys, I was just wondering if I can get an HTTP traffic application simulator (like packmime) but that can send can allow one web server to server multiple clients. Presently, packmime do not support this, it only allows a one-to-one client/server config. Any suggestion will be appreciated. Also, when analysin http traffic, what are the permance metrics to watch out for, apart from bandwidth consumption and latency? Lekkie.
Re: [ns] Web traffic simulator that can allow multiple client to one server
Hi, lekkie
I'm sending you a script with a web server, a cache server and a router that
connects them with the point of entrance for 30 (=clients_num) clients.
In surveying the http (actually is tcp) traffic, you can calculate
bandwidth (be careful about the difference between B and throughput), delay,
jitter, number of dropped packets (important), etc.
Best of luck!
set ns [new Simulator]
set nf [open tcpweb.nam w]
$ns namtrace-all $nf
set allchan [open all.tr.tcp w]
$ns trace-all $allchan
proc finish {} {
global ns nf allchan
$ns flush-trace
close $nf
close $allchan
exec nam tcpweb.nam
exit 0}
set clients_num 30
for {set i 1} {$i = $clients_num} {incr i} {
set peer($i) [$ns node]
}
set jurancon [$ns node]
set lrmon3 [$ns node]
set lmcrt0 [$ns node]
set lmcrt1 [$ns node]
set jacob2 [$ns node]
#legarea nodurilor si a serverelor de fisiere
for {set i 1} {$i = $clients_num} {incr i} {
$ns duplex-link $peer($i) $jurancon .5Mb 30ms DropTail
}
$ns duplex-link $jurancon $lrmon3 .5Mb 30ms DropTail
$ns duplex-link $lrmon3 $lmcrt0 .5Mb 30ms DropTail
$ns duplex-link $lrmon3 $lmcrt1 .5Mb 30ms DropTail
$ns duplex-link $lmcrt0 $jacob2 .5Mb 30ms DropTail
$ns duplex-link $lmcrt0 $lmcrt1 .5Mb 30ms DropTail
set server [new Http/Server $ns $jacob2]
for {set i 1} {$i = $clients_num} {incr i} {
set client($i) [new Http/Client $ns $peer($i)]
}
set cache [new Http/Cache $ns $lmcrt1]
# Create page pool as a central page generator. Use PagePool/Math
set pgp [new PagePool/Math]
set tmp [new RandomVariable/Constant]
$tmp set val_ 4096 ## average page size;
$pgp ranvar-size $tmp
set tmp [new RandomVariable/Exponential]
$tmp set avg_ 6 ## average page age;
$pgp ranvar-age $tmp
$server set-page-generator $pgp
set tmp [new RandomVariable/Exponential]
$tmp set avg_ 0.5 ## average request interval;
for {set i 1} {$i = $clients_num} {incr i} {
$client($i) set-interval-generator $tmp
$client($i) set-page-generator $pgp
}
# Schedule events
set startTime 1
set finishTime 9
$ns at $startTime start-connection
$ns at $finishTime finish
$ns at 10 finish2
proc start-connection {} {
global ns server cache client clients_num
for {set i 1} {$i = $clients_num} {incr i} {
$client($i) connect $cache
$cache connect $server
$client($i) start-session $cache $server}
}
proc finish2 {} {
global ns log
$ns flush-trace
flush $log
close $log}
$ns run
lekkie omotayo [EMAIL PROTECTED] wrote:
Hi guys,
I was just wondering if I can get an HTTP traffic application simulator
(like packmime) but that can send can allow one web server to server
multiple clients. Presently, packmime do not support this, it only allows a
one-to-one client/server config.
Any suggestion will be appreciated. Also, when analysin http traffic, what
are the permance metrics to watch out for, apart from bandwidth consumption
and latency?
Lekkie.
-
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