be used for <b>verify_callback</b>.</p>

<p>SSL_set_verify() sets the verification flags for <b>ssl</b> to be <b>mode</b> and specifies the <b>verify_callback</b> function to be used. If no callback function shall be specified, the NULL pointer can be used for <b>verify_callback</b>. In this case last <b>verify_callback</b> set specifically for this <b>ssl</b> remains. If no special <b>callback</b> was set before, the default callback for the underlying <b>ctx</b> is used, that was valid at the time <b>ssl<