dnsx

type DNS64 interface {
	// Add64 registers DNS64 resolver f to id.
	Add64(id string, f Transport) bool
	// Remove64 deregisters any current resolver from id.
	Remove64(id string) bool
	// ResetNat64Prefix sets the NAT64 prefix for transport id to ip6prefix.
	ResetNat64Prefix(ip6prefix string) bool
	// D64 synthesizes ans64 (AAAA) from ans6 if required, using resolver f.
	// Returned ans64 is nil if no DNS64 synthesis is needed (not AAAA).
	// Returned ans64 is ans6 if it already has AAAA records.
	D64(id string, ans6 []byte, f Transport) []byte
}

type Gateway interface {
	// given an alg or real ip, retrieves assoc real ips as csv, if any
	X(algip []byte) (realipcsv string)
	// given an alg or real ip, retrieves assoc dns names as csv, if any
	PTR(algip []byte, force bool) (domaincsv string)
	// given an alg or real ip, retrieve assoc blocklists as csv, if any
	RDNSBL(algip []byte) (blocklistcsv string)
	// contains filtered or unexported methods
}

type NAT64 interface {
	// Returns true if ip is a NAT64 address from transport id.
	IsNat64(id string, ip []byte) bool
	// Translates ip to IPv4 using the NAT64 prefix for transport id.
	// As a special case, ip is zero addr, output is always IPv4 zero addr.
	X64(id string, ip []byte) []byte
}

type NatPt interface {
	DNS64
	NAT64
}

type QueryError struct {
	// contains filtered or unexported fields
}

type RDNS interface {
	x.RDNS
	OnDeviceBlock() bool // Mode
	// contains filtered or unexported methods
}

type RdnsResolver interface {
	x.RDNSResolver
	// contains filtered or unexported methods
}

type Resolver interface {
	x.DNSTransportMult
	RdnsResolver
	NatPt

	// special purpose pre-defined transports
	// Gateway implements a DNS ALG transport
	Gateway() Gateway
	// GetMult returns multi-transport, if available
	GetMult(id string) (TransportMult, error)

	IsDnsAddr(ipport string) bool
	// Lookup performs resolution on Default and/or Goos DNSes
	LocalLookup(q []byte) ([]byte, error)
	// Forward performs resolution on any DNS transport
	Forward(q []byte) ([]byte, error)
	// Serve reads DNS query from conn and writes DNS answer to conn
	Serve(proto string, conn protect.Conn)
}

type Transport interface {
	x.DNSTransport
	// Given a DNS query (including ID), returns a DNS response with matching
	// ID, or an error if no response was received.  The error may be accompanied
	// by a SERVFAIL response if appropriate.
	Query(network string, q []byte, summary *x.DNSSummary) ([]byte, error)
}

type TransportMult interface {
	x.DNSTransportMult
	Transport
}