#!/bin/sh

# TOPO: local (10.73.131.158) <--> peer (10.73.131.202) [hosts not netns]

peer_run()
{
	ssh root@10.73.131.202 "$@"
	# echo " - peer run: $@"
	# echo " - print any key to continue after it's done"
	# read
}

modprobe sctp

echo "sctp sysctl memory control rmem:"
echo "--------------------------------"

echo "10 20 50 rmem limit ->"
pkill sctp_test 2> /dev/null
sysctl -w  net.sctp.sctp_mem="10 20 50"
sctp_test -H 10.73.131.158 -P 1234 -l > /dev/null 2>&1 &
sleep 3
peer_run "time sctp_test -H 10.73.131.202 -P 8000 -h 10.73.131.158 -p 1234 -s -c 5  > /dev/null 2>&1"
echo ""

echo "20 50 100 rmem limit ->"
pkill sctp_test 2> /dev/null
sysctl -w  net.sctp.sctp_mem="20 50 100"
sctp_test -H 10.73.131.158 -P 1234 -l > /dev/null 2>&1 &
sleep 3
peer_run "time sctp_test -H 10.73.131.202 -P 8000 -h 10.73.131.158 -p 1234 -s -c 5  > /dev/null 2>&1"
echo ""

echo "sctp sysctl memory control wmem:"
echo "--------------------------------"

peer_run "sctp_test -H 10.73.131.202 -P 8000 -l > /dev/null 2>&1 &"
tc qdisc add dev eth0 root netem delay 50ms
echo "10 20 50 wmem limit ->"
sysctl -w  net.sctp.sctp_mem="5 10 20"
time sctp_test -h 10.73.131.202 -p 8000 -H 10.73.131.158 -P 1234 -s -c 5  > /dev/null 2>&1
echo ""

echo "10 50 100 wmem limit ->"
sysctl -w  net.sctp.sctp_mem="10 50 100 ->"
time sctp_test -h 10.73.131.202 -p 8000 -H 10.73.131.158 -P 1234 -s -c 5  > /dev/null 2>&1
echo ""
tc qdisc delete dev eth0 root
peer_run "pkill sctp_test 2>/dev/null"