c.SetReadDeadline(time.Now())

if _, err := c.Read(one); err == io.EOF {

  l.Printf(logger.LevelDebug, "%s detected closed LAN connection", id)

  c.Close()

  c = nil

} else {

  var zero time.Time

  c.SetReadDeadline(time.Now().Add(10 * time.Millisecond))

}

For detecting a timeout, it suggests:

if neterr, ok := err.(net.Error); ok && neterr.Timeout() {
　　//......
}