func TestICMPFilter(t *testing.T) {
switch runtime.GOOS {
case "plan9", "windows":
t.Skipf("not supported on %q", runtime.GOOS)
}
var f ipv6.ICMPFilter
for _, toggle := range []bool{false, true} {
f.SetAll(toggle)
var wg sync.WaitGroup
for _, typ := range []ipv6.ICMPType{
ipv6.ICMPTypeDestinationUnreachable,
ipv6.ICMPTypeEchoReply,
ipv6.ICMPTypeNeighborSolicitation,
ipv6.ICMPTypeDuplicateAddressConfirmation,
} {
wg.Add(1)
go func(typ ipv6.ICMPType) {
defer wg.Done()
f.Set(typ, false)
if f.WillBlock(typ) {
t.Errorf("ipv6.ICMPFilter.Set(%v, false) failed", typ)
}
f.Set(typ, true)
if !f.WillBlock(typ) {
t.Errorf("ipv6.ICMPFilter.Set(%v, true) failed", typ)
}
}(typ)
}
wg.Wait()
}
}
func TestSetICMPFilter(t *testing.T) {
switch runtime.GOOS {
case "plan9", "windows":
t.Skipf("not supported on %q", runtime.GOOS)
}
if !supportsIPv6 {
t.Skip("ipv6 is not supported")
}
if os.Getuid() != 0 {
t.Skip("must be root")
}
c, err := net.ListenPacket("ip6:ipv6-icmp", "::1")
if err != nil {
t.Fatalf("net.ListenPacket failed: %v", err)
}
defer c.Close()
p := ipv6.NewPacketConn(c)
var f ipv6.ICMPFilter
f.SetAll(true)
f.Set(ipv6.ICMPTypeEchoRequest, false)
f.Set(ipv6.ICMPTypeEchoReply, false)
if err := p.SetICMPFilter(&f); err != nil {
t.Fatalf("ipv6.PacketConn.SetICMPFilter failed: %v", err)
}
kf, err := p.ICMPFilter()
if err != nil {
t.Fatalf("ipv6.PacketConn.ICMPFilter failed: %v", err)
}
if !reflect.DeepEqual(kf, &f) {
t.Fatalf("got unexpected filter %#v; expected %#v", kf, f)
}
}
func TestPacketConnReadWriteMulticastICMP(t *testing.T) {
switch runtime.GOOS {
case "plan9", "windows":
t.Skipf("not supported on %q", runtime.GOOS)
}
if !supportsIPv6 {
t.Skip("ipv6 is not supported")
}
if os.Getuid() != 0 {
t.Skip("must be root")
}
ifi := loopbackInterface()
if ifi == nil {
t.Skipf("not available on %q", runtime.GOOS)
}
c, err := net.ListenPacket("ip6:ipv6-icmp", "::")
if err != nil {
t.Fatalf("net.ListenPacket failed: %v", err)
}
defer c.Close()
dst, err := net.ResolveIPAddr("ip6", "ff02::114") // see RFC 4727
if err != nil {
t.Fatalf("net.ResolveIPAddr failed: %v", err)
}
p := ipv6.NewPacketConn(c)
if err := p.JoinGroup(ifi, dst); err != nil {
t.Fatalf("ipv6.PacketConn.JoinGroup on %v failed: %v", ifi, err)
}
if err := p.SetMulticastInterface(ifi); err != nil {
t.Fatalf("ipv6.PacketConn.SetMulticastInterface failed: %v", err)
}
if err := p.SetMulticastLoopback(true); err != nil {
t.Fatalf("ipv6.PacketConn.SetMulticastLoopback failed: %v", err)
}
cm := ipv6.ControlMessage{
TrafficClass: DiffServAF11 | CongestionExperienced,
IfIndex: ifi.Index,
}
cf := ipv6.FlagTrafficClass | ipv6.FlagHopLimit | ipv6.FlagInterface | ipv6.FlagPathMTU
var f ipv6.ICMPFilter
f.SetAll(true)
f.Set(ipv6.ICMPTypeEchoReply, false)
if err := p.SetICMPFilter(&f); err != nil {
t.Fatalf("ipv6.PacketConn.SetICMPFilter failed: %v", err)
}
for i, toggle := range []bool{true, false, true} {
wb, err := (&icmpMessage{
Type: ipv6.ICMPTypeEchoRequest, Code: 0,
Body: &icmpEcho{
ID: os.Getpid() & 0xffff, Seq: i + 1,
Data: []byte("HELLO-R-U-THERE"),
},
}).Marshal()
if err != nil {
t.Fatalf("icmpMessage.Marshal failed: %v", err)
}
if err := p.SetControlMessage(cf, toggle); err != nil {
t.Fatalf("ipv6.PacketConn.SetControlMessage failed: %v", err)
}
cm.HopLimit = i + 1
if _, err := p.WriteTo(wb, &cm, dst); err != nil {
t.Fatalf("ipv6.PacketConn.WriteTo failed: %v", err)
}
b := make([]byte, 128)
if n, cm, _, err := p.ReadFrom(b); err != nil {
t.Fatalf("ipv6.PacketConn.ReadFrom failed: %v", err)
} else {
t.Logf("rcvd cmsg: %v", cm)
if m, err := parseICMPMessage(b[:n]); err != nil {
t.Fatalf("parseICMPMessage failed: %v", err)
} else if m.Type != ipv6.ICMPTypeEchoReply || m.Code != 0 {
t.Fatalf("got type=%v, code=%v; expected type=%v, code=%v", m.Type, m.Code, ipv6.ICMPTypeEchoReply, 0)
}
}
}
}
func TestPacketConnReadWriteUnicastICMP(t *testing.T) {
switch runtime.GOOS {
case "dragonfly", "plan9", "solaris", "windows":
t.Skipf("not supported on %q", runtime.GOOS)
}
if !supportsIPv6 {
t.Skip("ipv6 is not supported")
}
if os.Getuid() != 0 {
t.Skip("must be root")
}
c, err := net.ListenPacket("ip6:ipv6-icmp", "::1")
if err != nil {
t.Fatalf("net.ListenPacket failed: %v", err)
}
defer c.Close()
p := ipv6.NewPacketConn(c)
defer p.Close()
dst, err := net.ResolveIPAddr("ip6", "::1")
if err != nil {
t.Fatalf("net.ResolveIPAddr failed: %v", err)
}
pshicmp := ipv6PseudoHeader(c.LocalAddr().(*net.IPAddr).IP, dst.IP, ianaProtocolIPv6ICMP)
cm := ipv6.ControlMessage{
TrafficClass: DiffServAF11 | CongestionExperienced,
Src: net.IPv6loopback,
Dst: net.IPv6loopback,
}
cf := ipv6.FlagTrafficClass | ipv6.FlagHopLimit | ipv6.FlagSrc | ipv6.FlagDst | ipv6.FlagInterface | ipv6.FlagPathMTU
ifi := loopbackInterface()
if ifi != nil {
cm.IfIndex = ifi.Index
}
var f ipv6.ICMPFilter
f.SetAll(true)
f.Set(ipv6.ICMPTypeEchoReply, false)
if err := p.SetICMPFilter(&f); err != nil {
t.Fatalf("ipv6.PacketConn.SetICMPFilter failed: %v", err)
}
var psh []byte
for i, toggle := range []bool{true, false, true} {
if toggle {
psh = nil
if err := p.SetChecksum(true, 2); err != nil {
t.Fatalf("ipv6.PacketConn.SetChecksum failed: %v", err)
}
} else {
psh = pshicmp
// Some platforms never allow to disable the
// kernel checksum processing.
p.SetChecksum(false, -1)
}
wb, err := (&icmpMessage{
Type: ipv6.ICMPTypeEchoRequest, Code: 0,
Body: &icmpEcho{
ID: os.Getpid() & 0xffff, Seq: i + 1,
Data: []byte("HELLO-R-U-THERE"),
},
}).Marshal(psh)
if err != nil {
t.Fatalf("icmpMessage.Marshal failed: %v", err)
}
if err := p.SetControlMessage(cf, toggle); err != nil {
t.Fatalf("ipv6.PacketConn.SetControlMessage failed: %v", err)
}
cm.HopLimit = i + 1
if err := p.SetWriteDeadline(time.Now().Add(100 * time.Millisecond)); err != nil {
t.Fatalf("ipv6.PacketConn.SetWriteDeadline failed: %v", err)
}
if n, err := p.WriteTo(wb, &cm, dst); err != nil {
t.Fatalf("ipv6.PacketConn.WriteTo failed: %v", err)
} else if n != len(wb) {
t.Fatalf("ipv6.PacketConn.WriteTo failed: short write: %v", n)
}
rb := make([]byte, 128)
if err := p.SetReadDeadline(time.Now().Add(100 * time.Millisecond)); err != nil {
t.Fatalf("ipv6.PacketConn.SetReadDeadline failed: %v", err)
}
if n, cm, _, err := p.ReadFrom(rb); err != nil {
t.Fatalf("ipv6.PacketConn.ReadFrom failed: %v", err)
} else {
t.Logf("rcvd cmsg: %v", cm)
if m, err := parseICMPMessage(rb[:n]); err != nil {
t.Fatalf("parseICMPMessage failed: %v", err)
} else if m.Type != ipv6.ICMPTypeEchoReply || m.Code != 0 {
t.Fatalf("got type=%v, code=%v; expected type=%v, code=%v", m.Type, m.Code, ipv6.ICMPTypeEchoReply, 0)
}
}
}
}