Melanie, thanks for your comments.<br /><br />21.10.2024, 22:34, "Melanie Plageman" &lt;melanieplageman@gmail.com&gt;:<br /><blockquote><p></p><p>The whole point of the read stream callback provided by the caller is<br />that the logic to get the next block should be there</p></blockquote>We must get number of blocks after examining last block. But callback returning EOF might be called before. With current API we have to restart.<div><br /></div><div>Removing extension lock will not change this.</div><div><br /></div><div><br /></div><div>Best regards, Andrey Borodin.</div>