func validateRemoteAddr(ip net.IP) bool {
if ip == nil {
return false
}
if ip.IsInterfaceLocalMulticast() {
return false
}
if ip.IsLinkLocalMulticast() {
return false
}
if ip.IsLinkLocalUnicast() {
return false
}
if ip.IsLoopback() {
return false
}
if ip.IsMulticast() {
return false
}
if ip.IsUnspecified() {
return false
}
if isBroadcasty(ip) {
return false
}
return true
}
func InterfaceIPs() ([]*net.IPAddr, error) {
var (
addrs []*net.IPAddr
)
ifaces, err := net.Interfaces()
if err != nil {
return nil, err
}
for _, iface := range ifaces {
iaddrs, err := iface.Addrs()
if err != nil {
return nil, err
}
for _, iaddr := range iaddrs {
var (
ip net.IP
zone string
)
switch x := iaddr.(type) {
case *net.IPAddr:
ip = x.IP
zone = x.Zone
case *net.IPNet:
ip = x.IP
zone = ""
}
if ip.IsMulticast() ||
ip.IsUnspecified() ||
ip.IsInterfaceLocalMulticast() ||
ip.IsLinkLocalMulticast() ||
ip.IsLinkLocalUnicast() {
continue
}
if ipv4 := ip.To4(); ipv4 != nil {
ip = ipv4
}
addrs = append(addrs, &net.IPAddr{
IP: ip,
Zone: zone,
})
}
}
return addrs, nil
}