func TestRawConnUnicastSocketOptions(t *testing.T) {
switch runtime.GOOS {
case "nacl", "plan9", "solaris":
t.Skipf("not supported on %q", runtime.GOOS)
}
if os.Getuid() != 0 {
t.Skip("must be root")
}
ifi := nettest.RoutedInterface("ip4", net.FlagUp|net.FlagLoopback)
if ifi == nil {
t.Skipf("not available on %q", runtime.GOOS)
}
c, err := net.ListenPacket("ip4:icmp", "127.0.0.1")
if err != nil {
t.Fatalf("net.ListenPacket failed: %v", err)
}
defer c.Close()
r, err := ipv4.NewRawConn(c)
if err != nil {
t.Fatalf("ipv4.NewRawConn failed: %v", err)
}
testUnicastSocketOptions(t, r)
}
func TestRawConnMulticastSocketOptions(t *testing.T) {
switch runtime.GOOS {
case "nacl", "plan9", "solaris":
t.Skipf("not supported on %q", runtime.GOOS)
}
if os.Getuid() != 0 {
t.Skip("must be root")
}
ifi := nettest.RoutedInterface("ip4", net.FlagUp|net.FlagMulticast|net.FlagLoopback)
if ifi == nil {
t.Skipf("not available on %q", runtime.GOOS)
}
c, err := net.ListenPacket("ip4:icmp", "0.0.0.0")
if err != nil {
t.Fatalf("net.ListenPacket failed: %v", err)
}
defer c.Close()
r, err := ipv4.NewRawConn(c)
if err != nil {
t.Fatalf("ipv4.NewRawConn failed: %v", err)
}
testMulticastSocketOptions(t, r, ifi, &net.IPAddr{IP: net.IPv4(224, 0, 0, 250)}) /// see RFC 4727
}
func TestConnUnicastSocketOptions(t *testing.T) {
switch runtime.GOOS {
case "nacl", "plan9", "solaris":
t.Skipf("not supported on %q", runtime.GOOS)
}
ifi := nettest.RoutedInterface("ip4", net.FlagUp|net.FlagLoopback)
if ifi == nil {
t.Skipf("not available on %q", runtime.GOOS)
}
ln, err := net.Listen("tcp4", "127.0.0.1:0")
if err != nil {
t.Fatalf("net.Listen failed: %v", err)
}
defer ln.Close()
done := make(chan bool)
go acceptor(t, ln, done)
c, err := net.Dial("tcp4", ln.Addr().String())
if err != nil {
t.Fatalf("net.Dial failed: %v", err)
}
defer c.Close()
testUnicastSocketOptions(t, ipv4.NewConn(c))
<-done
}
func TestPacketConnReadWriteUnicastUDP(t *testing.T) {
switch runtime.GOOS {
case "nacl", "plan9", "solaris", "windows":
t.Skipf("not supported on %q", runtime.GOOS)
}
ifi := nettest.RoutedInterface("ip4", net.FlagUp|net.FlagLoopback)
if ifi == nil {
t.Skipf("not available on %q", runtime.GOOS)
}
c, err := net.ListenPacket("udp4", "127.0.0.1:0")
if err != nil {
t.Fatalf("net.ListenPacket failed: %v", err)
}
defer c.Close()
dst, err := net.ResolveUDPAddr("udp4", c.LocalAddr().String())
if err != nil {
t.Fatalf("net.ResolveUDPAddr failed: %v", err)
}
p := ipv4.NewPacketConn(c)
defer p.Close()
cf := ipv4.FlagTTL | ipv4.FlagDst | ipv4.FlagInterface
for i, toggle := range []bool{true, false, true} {
if err := p.SetControlMessage(cf, toggle); err != nil {
if protocolNotSupported(err) {
t.Skipf("not supported on %q", runtime.GOOS)
}
t.Fatalf("ipv4.PacketConn.SetControlMessage failed: %v", err)
}
p.SetTTL(i + 1)
if err := p.SetWriteDeadline(time.Now().Add(100 * time.Millisecond)); err != nil {
t.Fatalf("ipv4.PacketConn.SetWriteDeadline failed: %v", err)
}
if _, err := p.WriteTo([]byte("HELLO-R-U-THERE"), nil, dst); err != nil {
t.Fatalf("ipv4.PacketConn.WriteTo failed: %v", err)
}
rb := make([]byte, 128)
if err := p.SetReadDeadline(time.Now().Add(100 * time.Millisecond)); err != nil {
t.Fatalf("ipv4.PacketConn.SetReadDeadline failed: %v", err)
}
if _, cm, _, err := p.ReadFrom(rb); err != nil {
t.Fatalf("ipv4.PacketConn.ReadFrom failed: %v", err)
} else {
t.Logf("rcvd cmsg: %v", cm)
}
}
}
func BenchmarkReadWriteIPv4UDP(b *testing.B) {
c, dst, err := benchmarkUDPListener()
if err != nil {
b.Fatalf("benchmarkUDPListener failed: %v", err)
}
defer c.Close()
p := ipv4.NewPacketConn(c)
defer p.Close()
cf := ipv4.FlagTTL | ipv4.FlagInterface
if err := p.SetControlMessage(cf, true); err != nil {
b.Fatalf("ipv4.PacketConn.SetControlMessage failed: %v", err)
}
ifi := nettest.RoutedInterface("ip4", net.FlagUp|net.FlagLoopback)
wb, rb := []byte("HELLO-R-U-THERE"), make([]byte, 128)
b.ResetTimer()
for i := 0; i < b.N; i++ {
benchmarkReadWriteIPv4UDP(b, p, wb, rb, dst, ifi)
}
}
func TestPacketConnMulticastSocketOptions(t *testing.T) {
switch runtime.GOOS {
case "nacl", "plan9", "solaris":
t.Skipf("not supported on %q", runtime.GOOS)
}
ifi := nettest.RoutedInterface("ip4", net.FlagUp|net.FlagMulticast|net.FlagLoopback)
if ifi == nil {
t.Skipf("not available on %q", runtime.GOOS)
}
for _, tt := range packetConnMulticastSocketOptionTests {
if tt.net == "ip4" && os.Getuid() != 0 {
t.Skip("must be root")
}
c, err := net.ListenPacket(tt.net+tt.proto, tt.addr)
if err != nil {
t.Fatalf("net.ListenPacket failed: %v", err)
}
defer c.Close()
testMulticastSocketOptions(t, ipv4.NewPacketConn(c), ifi, tt.gaddr)
}
}
func TestPacketConnReadWriteMulticastICMP(t *testing.T) {
switch runtime.GOOS {
case "nacl", "plan9", "solaris", "windows":
t.Skipf("not supported on %q", runtime.GOOS)
}
if os.Getuid() != 0 {
t.Skip("must be root")
}
ifi := nettest.RoutedInterface("ip4", net.FlagUp|net.FlagMulticast|net.FlagLoopback)
if ifi == nil {
t.Skipf("not available on %q", runtime.GOOS)
}
c, err := net.ListenPacket("ip4:icmp", "0.0.0.0")
if err != nil {
t.Fatalf("net.ListenPacket failed: %v", err)
}
defer c.Close()
dst, err := net.ResolveIPAddr("ip4", "224.0.0.254") // see RFC 4727
if err != nil {
t.Fatalf("net.ResolveIPAddr failed: %v", err)
}
p := ipv4.NewPacketConn(c)
defer p.Close()
if err := p.JoinGroup(ifi, dst); err != nil {
t.Fatalf("ipv4.PacketConn.JoinGroup on %v failed: %v", ifi, err)
}
if err := p.SetMulticastInterface(ifi); err != nil {
t.Fatalf("ipv4.PacketConn.SetMulticastInterface failed: %v", err)
}
if _, err := p.MulticastInterface(); err != nil {
t.Fatalf("ipv4.PacketConn.MulticastInterface failed: %v", err)
}
if err := p.SetMulticastLoopback(true); err != nil {
t.Fatalf("ipv4.PacketConn.SetMulticastLoopback failed: %v", err)
}
if _, err := p.MulticastLoopback(); err != nil {
t.Fatalf("ipv4.PacketConn.MulticastLoopback failed: %v", err)
}
cf := ipv4.FlagTTL | ipv4.FlagDst | ipv4.FlagInterface
for i, toggle := range []bool{true, false, true} {
wb, err := (&icmp.Message{
Type: ipv4.ICMPTypeEcho, Code: 0,
Body: &icmp.Echo{
ID: os.Getpid() & 0xffff, Seq: i + 1,
Data: []byte("HELLO-R-U-THERE"),
},
}).Marshal(nil)
if err != nil {
t.Fatalf("icmp.Message.Marshal failed: %v", err)
}
if err := p.SetControlMessage(cf, toggle); err != nil {
if protocolNotSupported(err) {
t.Skipf("not supported on %q", runtime.GOOS)
}
t.Fatalf("ipv4.PacketConn.SetControlMessage failed: %v", err)
}
if err := p.SetDeadline(time.Now().Add(200 * time.Millisecond)); err != nil {
t.Fatalf("ipv4.PacketConn.SetDeadline failed: %v", err)
}
p.SetMulticastTTL(i + 1)
if _, err := p.WriteTo(wb, nil, dst); err != nil {
t.Fatalf("ipv4.PacketConn.WriteTo failed: %v", err)
}
b := make([]byte, 128)
if n, cm, _, err := p.ReadFrom(b); err != nil {
t.Fatalf("ipv4.PacketConn.ReadFrom failed: %v", err)
} else {
t.Logf("rcvd cmsg: %v", cm)
m, err := icmp.ParseMessage(iana.ProtocolICMP, b[:n])
if err != nil {
t.Fatalf("icmp.ParseMessage failed: %v", err)
}
switch {
case m.Type == ipv4.ICMPTypeEchoReply && m.Code == 0: // net.inet.icmp.bmcastecho=1
case m.Type == ipv4.ICMPTypeEcho && m.Code == 0: // net.inet.icmp.bmcastecho=0
default:
t.Fatalf("got type=%v, code=%v; expected type=%v, code=%v", m.Type, m.Code, ipv4.ICMPTypeEchoReply, 0)
}
}
}
}
func TestPacketConnReadWriteMulticastUDP(t *testing.T) {
switch runtime.GOOS {
case "nacl", "plan9", "solaris", "windows":
t.Skipf("not supported on %q", runtime.GOOS)
}
ifi := nettest.RoutedInterface("ip4", net.FlagUp|net.FlagMulticast|net.FlagLoopback)
if ifi == nil {
t.Skipf("not available on %q", runtime.GOOS)
}
c, err := net.ListenPacket("udp4", "224.0.0.0:0") // see RFC 4727
if err != nil {
t.Fatalf("net.ListenPacket failed: %v", err)
}
defer c.Close()
_, port, err := net.SplitHostPort(c.LocalAddr().String())
if err != nil {
t.Fatalf("net.SplitHostPort failed: %v", err)
}
dst, err := net.ResolveUDPAddr("udp4", "224.0.0.254:"+port) // see RFC 4727
if err != nil {
t.Fatalf("net.ResolveUDPAddr failed: %v", err)
}
p := ipv4.NewPacketConn(c)
defer p.Close()
if err := p.JoinGroup(ifi, dst); err != nil {
t.Fatalf("ipv4.PacketConn.JoinGroup on %v failed: %v", ifi, err)
}
if err := p.SetMulticastInterface(ifi); err != nil {
t.Fatalf("ipv4.PacketConn.SetMulticastInterface failed: %v", err)
}
if _, err := p.MulticastInterface(); err != nil {
t.Fatalf("ipv4.PacketConn.MulticastInterface failed: %v", err)
}
if err := p.SetMulticastLoopback(true); err != nil {
t.Fatalf("ipv4.PacketConn.SetMulticastLoopback failed: %v", err)
}
if _, err := p.MulticastLoopback(); err != nil {
t.Fatalf("ipv4.PacketConn.MulticastLoopback failed: %v", err)
}
cf := ipv4.FlagTTL | ipv4.FlagDst | ipv4.FlagInterface
for i, toggle := range []bool{true, false, true} {
if err := p.SetControlMessage(cf, toggle); err != nil {
if protocolNotSupported(err) {
t.Skipf("not supported on %q", runtime.GOOS)
}
t.Fatalf("ipv4.PacketConn.SetControlMessage failed: %v", err)
}
if err := p.SetDeadline(time.Now().Add(200 * time.Millisecond)); err != nil {
t.Fatalf("ipv4.PacketConn.SetDeadline failed: %v", err)
}
p.SetMulticastTTL(i + 1)
if _, err := p.WriteTo([]byte("HELLO-R-U-THERE"), nil, dst); err != nil {
t.Fatalf("ipv4.PacketConn.WriteTo failed: %v", err)
}
b := make([]byte, 128)
if _, cm, _, err := p.ReadFrom(b); err != nil {
t.Fatalf("ipv4.PacketConn.ReadFrom failed: %v", err)
} else {
t.Logf("rcvd cmsg: %v", cm)
}
}
}
func TestRawConnReadWriteMulticastICMP(t *testing.T) {
if testing.Short() {
t.Skip("to avoid external network")
}
if os.Getuid() != 0 {
t.Skip("must be root")
}
ifi := nettest.RoutedInterface("ip4", net.FlagUp|net.FlagMulticast|net.FlagLoopback)
if ifi == nil {
t.Skipf("not available on %q", runtime.GOOS)
}
c, err := net.ListenPacket("ip4:icmp", "0.0.0.0")
if err != nil {
t.Fatalf("net.ListenPacket failed: %v", err)
}
defer c.Close()
dst, err := net.ResolveIPAddr("ip4", "224.0.0.254") // see RFC 4727
if err != nil {
t.Fatalf("ResolveIPAddr failed: %v", err)
}
r, err := ipv4.NewRawConn(c)
if err != nil {
t.Fatalf("ipv4.NewRawConn failed: %v", err)
}
defer r.Close()
if err := r.JoinGroup(ifi, dst); err != nil {
t.Fatalf("ipv4.RawConn.JoinGroup on %v failed: %v", ifi, err)
}
if err := r.SetMulticastInterface(ifi); err != nil {
t.Fatalf("ipv4.RawConn.SetMulticastInterface failed: %v", err)
}
if _, err := r.MulticastInterface(); err != nil {
t.Fatalf("ipv4.RawConn.MulticastInterface failed: %v", err)
}
if err := r.SetMulticastLoopback(true); err != nil {
t.Fatalf("ipv4.RawConn.SetMulticastLoopback failed: %v", err)
}
if _, err := r.MulticastLoopback(); err != nil {
t.Fatalf("ipv4.RawConn.MulticastLoopback failed: %v", err)
}
cf := ipv4.FlagTTL | ipv4.FlagDst | ipv4.FlagInterface
for i, toggle := range []bool{true, false, true} {
wb, err := (&icmp.Message{
Type: ipv4.ICMPTypeEcho, Code: 0,
Body: &icmp.Echo{
ID: os.Getpid() & 0xffff, Seq: i + 1,
Data: []byte("HELLO-R-U-THERE"),
},
}).Marshal(nil)
if err != nil {
t.Fatalf("icmp.Message.Marshal failed: %v", err)
}
wh := &ipv4.Header{
Version: ipv4.Version,
Len: ipv4.HeaderLen,
TOS: i + 1,
TotalLen: ipv4.HeaderLen + len(wb),
Protocol: 1,
Dst: dst.IP,
}
if err := r.SetControlMessage(cf, toggle); err != nil {
if protocolNotSupported(err) {
t.Skipf("not supported on %q", runtime.GOOS)
}
t.Fatalf("ipv4.RawConn.SetControlMessage failed: %v", err)
}
if err := r.SetDeadline(time.Now().Add(200 * time.Millisecond)); err != nil {
t.Fatalf("ipv4.RawConn.SetDeadline failed: %v", err)
}
r.SetMulticastTTL(i + 1)
if err := r.WriteTo(wh, wb, nil); err != nil {
t.Fatalf("ipv4.RawConn.WriteTo failed: %v", err)
}
rb := make([]byte, ipv4.HeaderLen+128)
if rh, b, cm, err := r.ReadFrom(rb); err != nil {
t.Fatalf("ipv4.RawConn.ReadFrom failed: %v", err)
} else {
t.Logf("rcvd cmsg: %v", cm)
m, err := icmp.ParseMessage(iana.ProtocolICMP, b)
if err != nil {
t.Fatalf("icmp.ParseMessage failed: %v", err)
}
switch {
case (rh.Dst.IsLoopback() || rh.Dst.IsLinkLocalUnicast() || rh.Dst.IsGlobalUnicast()) && m.Type == ipv4.ICMPTypeEchoReply && m.Code == 0: // net.inet.icmp.bmcastecho=1
case rh.Dst.IsMulticast() && m.Type == ipv4.ICMPTypeEcho && m.Code == 0: // net.inet.icmp.bmcastecho=0
default:
t.Fatalf("got type=%v, code=%v; expected type=%v, code=%v", m.Type, m.Code, ipv4.ICMPTypeEchoReply, 0)
}
}
}
}
func TestRawConnReadWriteUnicastICMP(t *testing.T) {
switch runtime.GOOS {
case "plan9", "windows":
t.Skipf("not supported on %q", runtime.GOOS)
}
if os.Getuid() != 0 {
t.Skip("must be root")
}
ifi := nettest.RoutedInterface("ip4", net.FlagUp|net.FlagLoopback)
if ifi == nil {
t.Skipf("not available on %q", runtime.GOOS)
}
c, err := net.ListenPacket("ip4:icmp", "0.0.0.0")
if err != nil {
t.Fatalf("net.ListenPacket failed: %v", err)
}
defer c.Close()
dst, err := net.ResolveIPAddr("ip4", "127.0.0.1")
if err != nil {
t.Fatalf("ResolveIPAddr failed: %v", err)
}
r, err := ipv4.NewRawConn(c)
if err != nil {
t.Fatalf("ipv4.NewRawConn failed: %v", err)
}
defer r.Close()
cf := ipv4.FlagTTL | ipv4.FlagDst | ipv4.FlagInterface
for i, toggle := range []bool{true, false, true} {
wb, err := (&icmp.Message{
Type: ipv4.ICMPTypeEcho, Code: 0,
Body: &icmp.Echo{
ID: os.Getpid() & 0xffff, Seq: i + 1,
Data: []byte("HELLO-R-U-THERE"),
},
}).Marshal(nil)
if err != nil {
t.Fatalf("icmp.Message.Marshal failed: %v", err)
}
wh := &ipv4.Header{
Version: ipv4.Version,
Len: ipv4.HeaderLen,
TOS: i + 1,
TotalLen: ipv4.HeaderLen + len(wb),
TTL: i + 1,
Protocol: 1,
Dst: dst.IP,
}
if err := r.SetControlMessage(cf, toggle); err != nil {
t.Fatalf("ipv4.RawConn.SetControlMessage failed: %v", err)
}
if err := r.SetWriteDeadline(time.Now().Add(100 * time.Millisecond)); err != nil {
t.Fatalf("ipv4.RawConn.SetWriteDeadline failed: %v", err)
}
if err := r.WriteTo(wh, wb, nil); err != nil {
t.Fatalf("ipv4.RawConn.WriteTo failed: %v", err)
}
rb := make([]byte, ipv4.HeaderLen+128)
loop:
if err := r.SetReadDeadline(time.Now().Add(100 * time.Millisecond)); err != nil {
t.Fatalf("ipv4.RawConn.SetReadDeadline failed: %v", err)
}
if _, b, cm, err := r.ReadFrom(rb); err != nil {
t.Fatalf("ipv4.RawConn.ReadFrom failed: %v", err)
} else {
t.Logf("rcvd cmsg: %v", cm)
m, err := icmp.ParseMessage(iana.ProtocolICMP, b)
if err != nil {
t.Fatalf("icmp.ParseMessage failed: %v", err)
}
if runtime.GOOS == "linux" && m.Type == ipv4.ICMPTypeEcho {
// On Linux we must handle own sent packets.
goto loop
}
if m.Type != ipv4.ICMPTypeEchoReply || m.Code != 0 {
t.Fatalf("got type=%v, code=%v; expected type=%v, code=%v", m.Type, m.Code, ipv4.ICMPTypeEchoReply, 0)
}
}
}
}