<a href="../man3/SSL_write_ex.html">SSL_write_ex(3)</a> or <a href="../man3/SSL_write.html">SSL_write(3)</a> might generate <b>SSL_ERROR_WANT_READ</b>.</p>

<p>Another type of non-fatal error that may occur is <b>SSL_ERROR_ZERO_RETURN</b>. This indicates an EOF (End-Of-File) which can occur if you attempt to read data from an <b>SSL</b> object but the peer has indicated that it will not send any more data on the stream. In this case you may still want to write data to the stream but you will not receive any