util

func Diff ¶

func Diff(a, b []string) []string

Diff returns the elements in a that are not in b

func Execute ¶

func Execute(fn func())

Execute a goroutine of a task

func GetDefault ¶

func GetDefault(key, fallback string) string

func GetLeaseDuration ¶

func GetLeaseDuration(ttl interface{}, defaultTTL, maxTTL int) time.Duration

func GetOutboundIP ¶

func GetOutboundIP() net.IP

func GetPublicIP ¶

func GetPublicIP() net.IP

func IsIP ¶

func IsIP(host string) bool

func IsValidDomain ¶

func IsValidDomain(domain string) bool