#!/bin/sh
# create a queue on the loopback interface
echo creating qdisc 
tc qdisc add dev lo root handle 1: cbq avpkt 1000 bandwidth 1000mbit
# create a class to simulate a slow link from the server
echo adding from server class
tc class add dev lo parent 1: classid 1:1 cbq rate 50kbit allot 1500 prio 5 bounded isolated
# filter only traffic from localhost port 80 to localhost
echo adding from server filter
tc filter add dev lo parent 1: protocol ip prio 16 u32 \
       match ip src 127.0.0.1/8 \
       match ip sport 80 0xffff \
       match ip dst 127.0.0.1/8 \
       flowid 1:1
# create a class to simulate a slow link to the server
echo adding to server class
tc class add dev lo parent 1: classid 1:2 cbq rate 50kbit allot 1500 prio 5 bounded isolated
# filter only traffic to localhost port 80 from localhost
echo adding to server filter
tc filter add dev lo parent 1: protocol ip prio 16 u32 \
       match ip src 127.0.0.1/8 \
       match ip dport 80 0xffff \
       match ip dst 127.0.0.1/8 \
       flowid 1:2