upstream

type ConnPool interface {
	Acquire(ctx context.Context) (PoolConn, error)
	Close()
}

type DialOption interface {
	Option
	// contains filtered or unexported methods
}

type DialerFn func(ctx context.Context) (net.Conn, error)

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

type DoTOption interface {
	Option
	// contains filtered or unexported methods
}

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

type Option interface {
	// contains filtered or unexported methods
}

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

type PlainOption interface {
	Option
	// contains filtered or unexported methods
}

type PoolConn interface {
	net.Conn
	Destroy()
}

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

type Upstream interface {
	// Exchange sends req to this upstream and returns the response that has
	// been received or an error if something went wrong.  The implementations
	// must not modify req as well as the caller must not modify it until the
	// method returns.  It shouldn't be called after closing.
	Exchange(ctx context.Context, req *dns.Msg) (rsp *dns.Msg, err error)

	Address() (addr string)
	Close() error
}