 called again when the connection is established. These messages can only appear with a BIO_s_connect() or BIO_s_accept() BIO, respectively. In order to find out, when the connection has been successfully established, on many platforms select() or poll() for writing on the socket file descriptor can be used.</p>

</dd>
<dt id="SSL_ERROR_WANT_X509_LOOKUP">SSL_ERROR_WANT_X509_LOOKUP</dt>
<dd>

<p>The operation did not complete because an application callback set by SSL_CTX_set_client_cert_cb() has asked to be