dns

type CheckFilterFunc func(resp *Response) error

type Initiator interface {
	Do(ctx context.Context, resolver Resolver) (*Response, error)
}

type InitiatorFunc func(ctx context.Context, resolver Resolver) (*Response, error)

type MockResolver struct {
	LookupAddrDelegate func(ctx context.Context, addr string) (names []string, err error)
	LookupHostDelegate func(ctx context.Context, host string) (addrs []net.IP, err error)
}

type Resolver interface {
	// LookupA looks up the given host using the corresponding query protocol.
	// It returns a slice of that host's addresses.
	LookupA(ctx context.Context, host string) (addrs []net.IP, err error)

	// LookupPTR performs a reverse lookup for the given address, returning a list
	// of names mapping to that address.
	//
	// The returned names are validated to be properly formatted presentation-format
	// domain names. If the response contains invalid names, those records are filtered
	// out and an error will be returned alongside the the remaining results, if any.
	LookupPTR(ctx context.Context, addr string) (names []string, err error)
}

type Response struct {
	Hosts     []string
	Addresses []net.IP
}

type ValidationChain []Validator

type Validator interface {
	Matches(resp *Response) error
}