net: support IPv6 scoped addressing zone
This CL provides IPv6 scoped addressing zone support as defined
in RFC 4007 for internet protocol family connection setups.
Follwoing types and functions allow a literal IPv6 address with
zone identifer as theirs parameter.
pkg net, func Dial(string, string) (Conn, error)
pkg net, func DialOpt(string, ...DialOption) (Conn, error)
pkg net, func DialTimeout(string, string, time.Duration) (Conn, error)
pkg net, func Listen(string, string) (Listener, error)
pkg net, func ListenPacket(string, string) (PacketConn, error)
pkg net, func ResolveIPAddr(string, string) (*IPAddr, error)
pkg net, func ResolveTCPAddr(string, string) (*TCPAddr, error)
pkg net, func ResolveUDPAddr(string, string) (*UDPAddr, error)
pkg net, type IPAddr struct, Zone string
pkg net, type TCPAddr struct, Zone string
pkg net, type UDPAddr struct, Zone string
Also follwoing methods return a literal IPv6 address with zone
identifier string if possible.
pkg net, method (*IPAddr) String() string
pkg net, method (*TCPAddr) String() string
pkg net, method (*UDPAddr) String() string
Fixes #4234.
Fixes #4501.
Update #5081.
R=rsc, iant
CC=golang-dev
https://golang.org/cl/6816116
diff --git a/src/pkg/net/interface_test.go b/src/pkg/net/interface_test.go
index 7fb3428..e31894a 100644
--- a/src/pkg/net/interface_test.go
+++ b/src/pkg/net/interface_test.go
@@ -25,6 +25,32 @@
return nil
}
+// ipv6LinkLocalUnicastAddr returns an IPv6 link-local unicast address
+// on the given network interface for tests. It returns "" if no
+// suitable address is found.
+func ipv6LinkLocalUnicastAddr(ifi *Interface) string {
+ if ifi == nil {
+ return ""
+ }
+ ifat, err := ifi.Addrs()
+ if err != nil {
+ return ""
+ }
+ for _, ifa := range ifat {
+ switch ifa := ifa.(type) {
+ case *IPAddr:
+ if ifa.IP.To4() == nil && ifa.IP.IsLinkLocalUnicast() {
+ return ifa.IP.String()
+ }
+ case *IPNet:
+ if ifa.IP.To4() == nil && ifa.IP.IsLinkLocalUnicast() {
+ return ifa.IP.String()
+ }
+ }
+ }
+ return ""
+}
+
func TestInterfaces(t *testing.T) {
ift, err := Interfaces()
if err != nil {
@@ -81,9 +107,9 @@
func testAddrs(t *testing.T, ifat []Addr) {
for _, ifa := range ifat {
- switch v := ifa.(type) {
+ switch ifa := ifa.(type) {
case *IPAddr, *IPNet:
- if v == nil {
+ if ifa == nil {
t.Errorf("\tunexpected value: %v", ifa)
} else {
t.Logf("\tinterface address %q", ifa.String())
@@ -96,9 +122,9 @@
func testMulticastAddrs(t *testing.T, ifmat []Addr) {
for _, ifma := range ifmat {
- switch v := ifma.(type) {
+ switch ifma := ifma.(type) {
case *IPAddr:
- if v == nil {
+ if ifma == nil {
t.Errorf("\tunexpected value: %v", ifma)
} else {
t.Logf("\tjoined group address %q", ifma.String())
