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reduce number of addresses in loopback #302

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reduce number of addresses in loopback #302

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32 changes: 21 additions & 11 deletions memberlist_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,7 @@ import (
"strconv"
"strings"
"sync"
"sync/atomic"
"testing"
"time"

Expand All @@ -23,18 +24,29 @@ import (
"github.com/stretchr/testify/require"
)

var bindLock sync.Mutex
var bindNum byte = 10
var bindNum0 uint32 = 9
var bindNum1 uint32 = 9
var bindNum2 uint32 = 9

func getBindAddrNet(network byte) net.IP {
bindLock.Lock()
defer bindLock.Unlock()
func getBindNum(bindNum *uint32, max uint32) uint32 {
atomic.AddUint32(bindNum, 1)
if *bindNum > max {
atomic.StoreUint32(bindNum, 10)
}
return *bindNum
}

result := net.IPv4(127, 0, network, bindNum)
bindNum++
if bindNum > 255 {
bindNum = 10
func getBindAddrNet(network byte) net.IP {
var bind uint32
switch network {
case 0:
bind = getBindNum(&bindNum0, 255)
case 1:
bind = getBindNum(&bindNum1, 14)
case 2:
bind = getBindNum(&bindNum2, 14)
}
result := net.IPv4(127, 0, network, byte(bind))

return result
}
Expand Down Expand Up @@ -1586,8 +1598,6 @@ func TestMemberlist_Join_IPv6(t *testing.T) {
}
// Since this binds to all interfaces we need to exclude other tests
// from grabbing an interface.
bindLock.Lock()
defer bindLock.Unlock()

c1 := DefaultLANConfig()
c1.Name = "A"
Expand Down
18 changes: 15 additions & 3 deletions test/setup_subnet.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -29,10 +29,21 @@ case $OSTYPE in
;;
esac

# Setup loopback
for j in 0 1 2
# first loopback, use intensively
for ((i=10;i<256;i++))
do
if [ "$action" = "up" ]
then
sudo ifconfig lo0 alias 127.0.0.$i up
else
sudo ifconfig lo0 127.0.0.$i delete
fi
done

# Not use much, only need a few
for j in 1 2
do
for ((i=2;i<256;i++))
for ((i=10;i<15;i++))
do
if [ "$action" = "up" ]
then
Expand All @@ -42,3 +53,4 @@ do
fi
done
done