dns

type Client interface {
	features.Feature

	// LookupIP returns IP address for the given domain. IPs may contain IPv4 and/or IPv6 addresses.
	LookupIP(domain string) ([]net.IP, error)
}

type ClientWithIPOption interface {
	// GetIPOption returns IPOption for the DNS client.
	GetIPOption() *IPOption

	// SetQueryOption sets IPv4Enable and IPv6Enable for the DNS client.
	SetQueryOption(isIPv4Enable, isIPv6Enable bool)

	// SetFakeDNSOption sets FakeEnable option for DNS client.
	SetFakeDNSOption(isFakeEnable bool)
}

type FakeDNSEngine interface {
	features.Feature
	GetFakeIPForDomain(domain string) []net.Address
	GetDomainFromFakeDNS(ip net.Address) string
}

type FakeDNSEngineRev0 interface {
	FakeDNSEngine
	IsIPInIPPool(ip net.Address) bool
	GetFakeIPForDomain3(domain string, IPv4, IPv6 bool) []net.Address
}

type IPOption struct {
	IPv4Enable bool
	IPv6Enable bool
	FakeEnable bool
}

type IPv4Lookup interface {
	LookupIPv4(domain string) ([]net.IP, error)
}

type IPv6Lookup interface {
	LookupIPv6(domain string) ([]net.IP, error)
}

type RCodeError uint16