c.Conn.SetReadDeadline(now.Add(c.readDeadline + updateInterval))
			c.readSetAt = now
		}
	}
}

func (c *DeadlineConn) setWriteDeadline() {
	if c.writeDeadline > 0 {
		now := time.Now()
		if now.Sub(c.writeSetAt) > updateInterval {
			c.Conn.SetWriteDeadline(now.Add(c.writeDeadline + updateInterval))
			c.writeSetAt = now
		}
	}
}

// Read - reads data from the connection using wrapped buffered reader.

	if err != nil {
		panic(err)
	}
	err = c.SetWriteDeadline(time.Now().Add(time.Second))
	if err != nil {
		panic(err)
	}
	c.Write(data)
}

func sendHello(c *net.UnixConn) {
	ack := &zdsapi.ZdsHello{
		Version: zdsapi.Version_V1,
	}
	data, err := proto.Marshal(ack)
	if err != nil {
		panic(err)
	}
	err = c.SetWriteDeadline(time.Now().Add(time.Second))
	if err != nil {
		panic(err)

		now := time.Now()
		// Only set write deadline once every second
		if now.Sub(lastSetDeadline) > time.Second {
			err := conn.SetWriteDeadline(now.Add(connWriteTimeout + time.Second))
			if err != nil {
				gridLogIf(ctx, fmt.Errorf("conn.SetWriteDeadline: %w", err))
				return false
			}
			lastSetDeadline = now
		}

		_, err := buf.WriteTo(conn)
		if err != nil {

}

func (z *ZtunnelConnection) sendDataAndWaitForAck(data []byte, fd *int) (*zdsapi.WorkloadResponse, error) {
	var rights []byte
	if fd != nil {
		rights = unix.UnixRights(*fd)
	}
	err := z.u.SetWriteDeadline(time.Now().Add(readWriteDeadline))
	if err != nil {
		return nil, err
	}

	_, _, err = z.u.WriteMsgUnix(data, rights, nil)
	if err != nil {
		return nil, err
	}

	// wait for ack

pkg net/http, method (*ResponseController) Hijack() (net.Conn, *bufio.ReadWriter, error) #54136
pkg net/http, method (*ResponseController) SetReadDeadline(time.Time) error #54136
pkg net/http, method (*ResponseController) SetWriteDeadline(time.Time) error #54136
pkg net/http, type ResponseController struct #54136
pkg net/http, type Server struct, DisableGeneralOptionsHandler bool #41773