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package portmapper
import (
"github.com/dotcloud/docker/daemon/networkdriver/portallocator"
"github.com/dotcloud/docker/pkg/iptables"
"github.com/dotcloud/docker/pkg/proxy"
"net"
"testing"
)
func init() {
// override this func to mock out the proxy server
newProxy = proxy.NewStubProxy
}
func reset() {
chain = nil
currentMappings = make(map[string]*mapping)
}
func TestSetIptablesChain(t *testing.T) {
defer reset()
c := &iptables.Chain{
Name: "TEST",
Bridge: "192.168.1.1",
}
if chain != nil {
t.Fatal("chain should be nil at init")
}
SetIptablesChain(c)
if chain == nil {
t.Fatal("chain should not be nil after set")
}
}
func TestMapPorts(t *testing.T) {
dstIp1 := net.ParseIP("192.168.0.1")
dstIp2 := net.ParseIP("192.168.0.2")
dstAddr1 := &net.TCPAddr{IP: dstIp1, Port: 80}
dstAddr2 := &net.TCPAddr{IP: dstIp2, Port: 80}
srcAddr1 := &net.TCPAddr{Port: 1080, IP: net.ParseIP("172.16.0.1")}
srcAddr2 := &net.TCPAddr{Port: 1080, IP: net.ParseIP("172.16.0.2")}
addrEqual := func(addr1, addr2 net.Addr) bool {
return (addr1.Network() == addr2.Network()) && (addr1.String() == addr2.String())
}
if host, err := Map(srcAddr1, dstIp1, 80); err != nil {
t.Fatalf("Failed to allocate port: %s", err)
} else if !addrEqual(dstAddr1, host) {
t.Fatalf("Incorrect mapping result: expected %s:%s, got %s:%s",
dstAddr1.String(), dstAddr1.Network(), host.String(), host.Network())
}
if _, err := Map(srcAddr1, dstIp1, 80); err == nil {
t.Fatalf("Port is in use - mapping should have failed")
}
if _, err := Map(srcAddr2, dstIp1, 80); err == nil {
t.Fatalf("Port is in use - mapping should have failed")
}
if _, err := Map(srcAddr2, dstIp2, 80); err != nil {
t.Fatalf("Failed to allocate port: %s", err)
}
if Unmap(dstAddr1) != nil {
t.Fatalf("Failed to release port")
}
if Unmap(dstAddr2) != nil {
t.Fatalf("Failed to release port")
}
if Unmap(dstAddr2) == nil {
t.Fatalf("Port already released, but no error reported")
}
}
func TestGetUDPKey(t *testing.T) {
addr := &net.UDPAddr{IP: net.ParseIP("192.168.1.5"), Port: 53}
key := getKey(addr)
if expected := "192.168.1.5:53/udp"; key != expected {
t.Fatalf("expected key %s got %s", expected, key)
}
}
func TestGetTCPKey(t *testing.T) {
addr := &net.TCPAddr{IP: net.ParseIP("192.168.1.5"), Port: 80}
key := getKey(addr)
if expected := "192.168.1.5:80/tcp"; key != expected {
t.Fatalf("expected key %s got %s", expected, key)
}
}
func TestGetUDPIPAndPort(t *testing.T) {
addr := &net.UDPAddr{IP: net.ParseIP("192.168.1.5"), Port: 53}
ip, port := getIPAndPort(addr)
if expected := "192.168.1.5"; ip.String() != expected {
t.Fatalf("expected ip %s got %s", expected, ip)
}
if ep := 53; port != ep {
t.Fatalf("expected port %d got %d", ep, port)
}
}
func TestMapAllPortsSingleInterface(t *testing.T) {
dstIp1 := net.ParseIP("0.0.0.0")
srcAddr1 := &net.TCPAddr{Port: 1080, IP: net.ParseIP("172.16.0.1")}
hosts := []net.Addr{}
var host net.Addr
var err error
defer func() {
for _, val := range hosts {
Unmap(val)
}
}()
for i := 0; i < 10; i++ {
for i := portallocator.BeginPortRange; i < portallocator.EndPortRange; i++ {
if host, err = Map(srcAddr1, dstIp1, 0); err != nil {
t.Fatal(err)
}
hosts = append(hosts, host)
}
if _, err := Map(srcAddr1, dstIp1, portallocator.BeginPortRange); err == nil {
t.Fatal("Port %d should be bound but is not", portallocator.BeginPortRange)
}
for _, val := range hosts {
if err := Unmap(val); err != nil {
t.Fatal(err)
}
}
hosts = []net.Addr{}
}
}
|
