Configuring HTTP Traffic

Hi there,

I just installed ns to do my school project. Our teacher wants us to simulate a HTTP Traffic with 5 different pages.

I’ve found out that I can do this with PackMimeHTTP but couldn’t be able to build a page by looking at ns documentation.

All I found is the following code:

##########################

#Setup a HTTP Connection 1

set rate 15

set pm1 [new PackMimeHTTP]

$pm1 set-client $nH1;                  # name $nH1 as client

$pm1 set-server $nZ;                  # name $nZ as server

$pm1 set-rate $rate;                    # new connections per second

$pm1 set-http-1.1;                      # use HTTP/1.1

# SETUP PACKMIME RANDOM VARIABLES

global defaultRNG

# create RNGs (appropriate RNG seeds are assigned automatically)

set flowRNG [new RNG]

set reqsizeRNG [new RNG]

set rspsizeRNG [new RNG]



# create RandomVariables

set flow_arrive [new RandomVariable/PackMimeHTTPFlowArrive $rate]

set req_size [new RandomVariable/PackMimeHTTPFileSize $rate $CLIENT]

set rsp_size [new RandomVariable/PackMimeHTTPFileSize $rate $SERVER]

# assign RNGs to RandomVariables

$flow_arrive use-rng $flowRNG

$req_size use-rng $reqsizeRNG

$rsp_size use-rng $rspsizeRNG

# set PackMime variables

$pm1 set-flow_arrive $flow_arrive

$pm1 set-req_size $req_size

$pm1 set-rsp_size $rsp_size

# record HTTP statistics

#$pm1 set-outfile $http1log

with nH1 as the client and nZ is the server. I copy/paste this code 5 times to produce different HTTP traffic but it’s lame and little bit far from what I’m supposed to do.

Can someone help me to produce 5 HTTP Traffic, coming from 4 clients to one or two servers?

The exact topology is as the following:

A ----          /---X

B

0=========1---Y

C ----/|         ---Z

D ----/

and expects me to choose one or more servers from X,Y,Z; and minimum two clients from A,B,C,D to produce 5 page visit traffic.

I hope I could explain what I need.

All help will be appreciated.

Thanks from now.