cloudflared-mirror/vendor/github.com/lucas-clemente/quic-go/internal/utils/ip.go

11 lines
294 B
Go
Raw Normal View History

package utils
import "net"
func IsIPv4(ip net.IP) bool {
// If ip is not an IPv4 address, To4 returns nil.
// Note that there might be some corner cases, where this is not correct.
// See https://stackoverflow.com/questions/22751035/golang-distinguish-ipv4-ipv6.
return ip.To4() != nil
}