Function localIP

registerurl.go:51–77

localIp returns a local IP from one of the local interfaces.

()

// localIp returns a local IP from one of the local interfaces.
func localIP() (net.IP, error) {
	tt, err := net.Interfaces()
	if err != nil {
		return nil, err
	}

	for _, t := range tt {
		aa, err := t.Addrs()
		if err != nil {
			return nil, err
		}
		for _, a := range aa {
			ipnet, ok := a.(*net.IPNet)
			if !ok {
				continue
			}
			v4 := ipnet.IP.To4()

			if v4 == nil || v4[0] == 127 { // loopback address
				continue
			}
			return v4, nil
		}
	}

	return nil, errors.New("cannot find local IP address")
}

// publicIP returns an IP that is supposed to be Public.
func publicIP() (net.IP, error) {