Hello,<br><br>From what I&#39;ve inferred from ocaml-ssl&#39;s documentation, its &quot;read&quot; function has Unix-like non-blocking<br>semantics.<br><br>This means that read returns the number of bytes available, not the number of bytes requested.<br>

<br>Hence you need an extra buffering/parsing layer on top of SSL sockets.&nbsp; However you are using<br>IMAP, which is line-oriented, I guess Ssl.input_string should do what you want.<br>-- <br>Berke<br><br>