// FromIP converts a net.IP type to a Multiaddr.
func FromIP(ip net.IP) (ma.Multiaddr, error) {
switch {
case ip.To4() != nil:
return ma.NewMultiaddr("/ip4/" + ip.String())
case ip.To16() != nil:
return ma.NewMultiaddr("/ip6/" + ip.String())
default:
return nil, errIncorrectNetAddr
}
}
func TestThinWaist(t *testing.T) {
addrs := map[string]bool{
"/ip4/127.0.0.1/udp/1234": true,
"/ip4/127.0.0.1/tcp/1234": true,
"/ip4/127.0.0.1/udp/1234/utp": true,
"/ip4/127.0.0.1/udp/1234/tcp/1234": true,
"/ip4/127.0.0.1/tcp/12345/ip4/1.2.3.4": true,
"/ip6/::1/tcp/80": true,
"/ip6/::1/udp/80": true,
"/ip6/::1": true,
"/ip6/::1/utp": false,
"/tcp/1234/ip4/1.2.3.4": false,
"/tcp/1234": false,
"/tcp/1234/utp": false,
"/tcp/1234/udp/1234": false,
"/ip4/1.2.3.4/ip4/2.3.4.5": true,
"/ip6/::1/ip4/2.3.4.5": true,
}
for a, res := range addrs {
m, err := ma.NewMultiaddr(a)
if err != nil {
t.Fatalf("failed to construct Multiaddr: %s", a)
}
if IsThinWaist(m) != res {
t.Fatalf("IsThinWaist(%s) != %v", a, res)
}
}
}
func newAddrOrFatal(t *testing.T, s string) ma.Multiaddr {
a, err := ma.NewMultiaddr(s)
if err != nil {
t.Fatal("error parsing multiaddr", err)
}
return a
}
func MA(t *testing.T, m string) ma.Multiaddr {
maddr, err := ma.NewMultiaddr(m)
if err != nil {
t.Fatal(err)
}
return maddr
}
func newMultiaddr(t *testing.T, m string) ma.Multiaddr {
maddr, err := ma.NewMultiaddr(m)
if err != nil {
t.Fatal("failed to construct multiaddr:", m, err)
}
return maddr
}
func TestDialArgs(t *testing.T) {
test := func(e_maddr, e_nw, e_host string) {
m, err := ma.NewMultiaddr(e_maddr)
if err != nil {
t.Fatal("failed to construct", "/ip4/127.0.0.1/udp/1234", e_maddr)
}
nw, host, err := DialArgs(m)
if err != nil {
t.Fatal("failed to get dial args", e_maddr, m, err)
}
if nw != e_nw {
t.Error("failed to get udp network Dial Arg", e_nw, nw)
}
if host != e_host {
t.Error("failed to get host:port Dial Arg", e_host, host)
}
}
test("/ip4/127.0.0.1/udp/1234", "udp4", "127.0.0.1:1234")
test("/ip4/127.0.0.1/tcp/4321", "tcp4", "127.0.0.1:4321")
test("/ip4/127.0.0.1/udp/1234/utp", "utp4", "127.0.0.1:1234")
test("/ip6/::1/udp/1234", "udp6", "[::1]:1234")
test("/ip6/::1/tcp/4321", "tcp6", "[::1]:4321")
test("/ip6/::1/udp/1234/utp", "utp6", "[::1]:1234")
}
func TestDialBadAddrs(t *testing.T) {
m := func(s string) ma.Multiaddr {
maddr, err := ma.NewMultiaddr(s)
if err != nil {
t.Fatal(err)
}
return maddr
}
ctx := context.Background()
s := makeSwarms(ctx, t, 1)[0]
test := func(a ma.Multiaddr) {
p := testutil.RandPeerIDFatal(t)
s.peers.AddAddr(p, a, peer.PermanentAddrTTL)
if _, err := s.Dial(ctx, p); err == nil {
t.Error("swarm should not dial: %s", m)
}
}
test(m("/ip6/fe80::1")) // link local
test(m("/ip6/fe80::100")) // link local
test(m("/ip4/127.0.0.1/udp/1234/utp")) // utp
}
func newMultiaddr(t *testing.T, s string) ma.Multiaddr {
maddr, err := ma.NewMultiaddr(s)
if err != nil {
t.Fatal(err)
}
return maddr
}
func mkAddr(t *testing.T, s string) ma.Multiaddr {
a, err := ma.NewMultiaddr(s)
if err != nil {
t.Fatal(err)
}
return a
}
func address(addr string) ma.Multiaddr {
m, err := ma.NewMultiaddr(addr)
if err != nil {
die(err)
}
return m
}
func init() {
// initialize ZeroLocalTCPAddress
maddr, err := ma.NewMultiaddr("/ip4/127.0.0.1/tcp/0")
if err != nil {
panic(err)
}
ZeroLocalTCPAddress = maddr
}
// RandLocalTCPAddress returns a random multiaddr. it suppresses errors
// for nice composability-- do check the address isn't nil.
//
// Note: for real network tests, use ZeroLocalTCPAddress so the kernel
// assigns an unused TCP port. otherwise you may get clashes. This
// function remains here so that p2p/net/mock (which does not touch the
// real network) can assign different addresses to peers.
func RandLocalTCPAddress() ma.Multiaddr {
// chances are it will work out, but it **might** fail if the port is in use
// most ports above 10000 aren't in use by long running processes, so yay.
// (maybe there should be a range of "loopback" ports that are guaranteed
// to be open for the process, but naturally can only talk to self.)
lastPort.Lock()
if lastPort.port == 0 {
lastPort.port = 10000 + SeededRand.Intn(50000)
}
port := lastPort.port
lastPort.port++
lastPort.Unlock()
addr := fmt.Sprintf("/ip4/127.0.0.1/tcp/%d", port)
maddr, _ := ma.NewMultiaddr(addr)
return maddr
}
func testToNetAddr(t *testing.T, maddr, ntwk, addr string) {
m, err := ma.NewMultiaddr(maddr)
if err != nil {
t.Fatal("failed to generate.")
}
naddr, err := ToNetAddr(m)
if addr == "" { // should fail
if err == nil {
t.Fatalf("failed to error: %s", m)
}
return
}
// shouldn't fail
if err != nil {
t.Fatalf("failed to convert to net addr: %s", m)
}
if naddr.String() != addr {
t.Fatalf("naddr.Address() == %s != %s", naddr, addr)
}
if naddr.Network() != ntwk {
t.Fatalf("naddr.Network() == %s != %s", naddr.Network(), ntwk)
}
// should convert properly
switch ntwk {
case "tcp":
_ = naddr.(*net.TCPAddr)
case "udp":
_ = naddr.(*net.UDPAddr)
case "ip":
_ = naddr.(*net.IPAddr)
}
}
func (m *mapping) ExternalAddr() (ma.Multiaddr, error) {
if time.Now().Sub(m.cacheTime) < CacheTime {
return m.cached, nil
}
if m.ExternalPort() == 0 { // dont even try right now.
return nil, ErrNoMapping
}
ip, err := m.nat.nat.GetExternalAddress()
if err != nil {
return nil, err
}
ipmaddr, err := manet.FromIP(ip)
if err != nil {
return nil, fmt.Errorf("error parsing ip")
}
// call m.ExternalPort again, as mapping may have changed under our feet. (tocttou)
extport := m.ExternalPort()
if extport == 0 {
return nil, ErrNoMapping
}
tcp, err := ma.NewMultiaddr(fmt.Sprintf("/%s/%d", m.Protocol(), extport))
if err != nil {
return nil, err
}
maddr2 := ipmaddr.Encapsulate(tcp)
m.cached = maddr2
m.cacheTime = time.Now()
return maddr2, nil
}
func TestFilterAddrs(t *testing.T) {
m := func(s string) ma.Multiaddr {
maddr, err := ma.NewMultiaddr(s)
if err != nil {
t.Fatal(err)
}
return maddr
}
bad := []ma.Multiaddr{
m("/ip4/1.2.3.4/udp/1234"), // unreliable
m("/ip4/1.2.3.4/udp/1234/sctp/1234"), // not in manet
m("/ip4/1.2.3.4/udp/1234/utp"), // utp is broken
m("/ip4/1.2.3.4/udp/1234/udt"), // udt is broken on arm
m("/ip6/fe80::1/tcp/0"), // link local
m("/ip6/fe80::100/tcp/1234"), // link local
}
good := []ma.Multiaddr{
m("/ip4/127.0.0.1/tcp/0"),
m("/ip6/::1/tcp/0"),
}
goodAndBad := append(good, bad...)
// test filters
for _, a := range bad {
if addrutil.AddrUsable(a, true) {
t.Errorf("addr %s should be unusable", a)
}
}
for _, a := range good {
if !addrutil.AddrUsable(a, true) {
t.Errorf("addr %s should be usable", a)
}
}
subtestAddrsEqual(t, addrutil.FilterUsableAddrs(bad), []ma.Multiaddr{})
subtestAddrsEqual(t, addrutil.FilterUsableAddrs(good), good)
subtestAddrsEqual(t, addrutil.FilterUsableAddrs(goodAndBad), good)
// now test it with swarm
id, err := testutil.RandPeerID()
if err != nil {
t.Fatal(err)
}
ps := peer.NewPeerstore()
ctx := context.Background()
if _, err := NewNetwork(ctx, bad, id, ps, metrics.NewBandwidthCounter()); err == nil {
t.Fatal("should have failed to create swarm")
}
if _, err := NewNetwork(ctx, goodAndBad, id, ps, metrics.NewBandwidthCounter()); err != nil {
t.Fatal("should have succeeded in creating swarm", err)
}
}
// TestObsAddrSet
func TestObsAddrSet(t *testing.T) {
m := func(s string) ma.Multiaddr {
m, err := ma.NewMultiaddr(s)
if err != nil {
t.Error(err)
}
return m
}
addrsMarch := func(a, b []ma.Multiaddr) bool {
for _, aa := range a {
found := false
for _, bb := range b {
if aa.Equal(bb) {
found = true
break
}
}
if !found {
return false
}
}
return true
}
a1 := m("/ip4/1.2.3.4/tcp/1231")
a2 := m("/ip4/1.2.3.4/tcp/1232")
a3 := m("/ip4/1.2.3.4/tcp/1233")
a4 := m("/ip4/1.2.3.4/tcp/1234")
a5 := m("/ip4/1.2.3.4/tcp/1235")
a6 := m("/ip4/1.2.3.6/tcp/1236")
a7 := m("/ip4/1.2.3.7/tcp/1237")
oas := ObservedAddrSet{}
if !addrsMarch(oas.Addrs(), nil) {
t.Error("addrs should be empty")
}
oas.Add(a1, a4)
oas.Add(a2, a4)
oas.Add(a3, a4)
// these are all different so we should not yet get them.
if !addrsMarch(oas.Addrs(), nil) {
t.Error("addrs should _still_ be empty (once)")
}
// same observer, so should not yet get them.
oas.Add(a1, a4)
oas.Add(a2, a4)
oas.Add(a3, a4)
if !addrsMarch(oas.Addrs(), nil) {
t.Error("addrs should _still_ be empty (same obs)")
}
// different observer, but same observer group.
oas.Add(a1, a5)
oas.Add(a2, a5)
oas.Add(a3, a5)
if !addrsMarch(oas.Addrs(), nil) {
t.Error("addrs should _still_ be empty (same obs group)")
}
oas.Add(a1, a6)
if !addrsMarch(oas.Addrs(), []ma.Multiaddr{a1}) {
t.Error("addrs should only have a1")
}
oas.Add(a2, a5)
oas.Add(a1, a5)
oas.Add(a1, a5)
oas.Add(a2, a6)
oas.Add(a1, a6)
oas.Add(a1, a6)
oas.Add(a2, a7)
oas.Add(a1, a7)
oas.Add(a1, a7)
if !addrsMarch(oas.Addrs(), []ma.Multiaddr{a1, a2}) {
t.Error("addrs should only have a1, a2")
}
// change the timeout constant so we can time it out.
oas.SetTTL(time.Millisecond * 200)
<-time.After(time.Millisecond * 210)
if !addrsMarch(oas.Addrs(), []ma.Multiaddr{nil}) {
t.Error("addrs should have timed out")
}
}
// FromNetAddr converts a net.Addr type to a Multiaddr.
func FromNetAddr(a net.Addr) (ma.Multiaddr, error) {
if a == nil {
return nil, fmt.Errorf("nil multiaddr")
}
switch a.Network() {
case "tcp", "tcp4", "tcp6":
ac, ok := a.(*net.TCPAddr)
if !ok {
return nil, errIncorrectNetAddr
}
// Get IP Addr
ipm, err := FromIP(ac.IP)
if err != nil {
return nil, errIncorrectNetAddr
}
// Get TCP Addr
tcpm, err := ma.NewMultiaddr(fmt.Sprintf("/tcp/%d", ac.Port))
if err != nil {
return nil, errIncorrectNetAddr
}
// Encapsulate
return ipm.Encapsulate(tcpm), nil
case "udp", "upd4", "udp6":
ac, ok := a.(*net.UDPAddr)
if !ok {
return nil, errIncorrectNetAddr
}
// Get IP Addr
ipm, err := FromIP(ac.IP)
if err != nil {
return nil, errIncorrectNetAddr
}
// Get UDP Addr
udpm, err := ma.NewMultiaddr(fmt.Sprintf("/udp/%d", ac.Port))
if err != nil {
return nil, errIncorrectNetAddr
}
// Encapsulate
return ipm.Encapsulate(udpm), nil
case "utp", "utp4", "utp6":
acc, ok := a.(*utp.Addr)
if !ok {
return nil, errIncorrectNetAddr
}
// Get UDP Addr
ac, ok := acc.Child().(*net.UDPAddr)
if !ok {
return nil, errIncorrectNetAddr
}
// Get IP Addr
ipm, err := FromIP(ac.IP)
if err != nil {
return nil, errIncorrectNetAddr
}
// Get UDP Addr
utpm, err := ma.NewMultiaddr(fmt.Sprintf("/udp/%d/utp", ac.Port))
if err != nil {
return nil, errIncorrectNetAddr
}
// Encapsulate
return ipm.Encapsulate(utpm), nil
case "ip", "ip4", "ip6":
ac, ok := a.(*net.IPAddr)
if !ok {
return nil, errIncorrectNetAddr
}
return FromIP(ac.IP)
case "ip+net":
ac, ok := a.(*net.IPNet)
if !ok {
return nil, errIncorrectNetAddr
}
return FromIP(ac.IP)
default:
return nil, fmt.Errorf("unknown network %v", a.Network())
}
}