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 ClientWithFakeDNS interface {
	// AsFakeDNSClient converts the client to dns.Client that enables FakeDNS querying option.
	AsFakeDNSClient() Client

	// AsFakeDNSEngine converts the client to dns.FakeDNSEngine that could serve FakeDNSEngine feature.
	AsFakeDNSEngine() FakeDNSEngine
}

type FakeDNSEngine interface {
	features.Feature

	// GetFakeIPForDomain returns fake IP addresses for the given domain, and registers the domain with the returned IPs.
	GetFakeIPForDomain(domain string) []net.Address

	// GetDomainFromFakeDNS returns the bound domain name for the given fake IP.
	GetDomainFromFakeDNS(ip net.Address) string
}

type FakeDNSEngineRev0 interface {
	FakeDNSEngine

	// IsIPInIPPool tests whether the given IP address resides in managed fake IP pools.
	IsIPInIPPool(ip net.Address) bool

	// GetFakeIPForDomain3 registers and returns fake IP addresses for the given domain in IPv4 and/or IPv6.
	GetFakeIPForDomain3(domain string, IPv4 bool, 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