Do you mean like To4 and To16 that are defined on net.IP?
switch {
case ip.To4() != nil:
// is an IPv4 address
case ip.To16() != nil:
// is an IPv6 address
default:
// is something else
}
On Wed, Jun 15, 2016 at 11:29 PM, <goo...@digineo.de> wrote:
> Hi,
>
> In many software projects I have to get the address family of a net.IP
> object. I always duplicate the following code:
>
> func isIPv4(ip net.IP) bool {
> return len(ip) == net.IPv4len || (len(ip) > 11 && isZeros(ip[0:10]) &&
> ip[10] == 0xff && ip[11] == 0xff)
> }
>
> func isZeros(ip net.IP) bool {
> for _, b := range ip {
> if b != 0 {
> return false
> }
> }
> return true
> }
>
> Instead it would be very very useful to have a Family(), IsIPv4 or IsIPv6
> function on net.IP.
> What is your opinion on that?
>
>
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