CURLOPT_FTP_SSL_CCC

CURLOPT_FTP_SSL_CCC is one of the accepted parameters for curl_setopt parameter #2.

CURLOPT_FTP_SSL_CCC — This option makes cURL use CCC (Clear Command Channel) which shuts down the SSL/TLS layer after authenticating making the rest of the control channel communication unencrypted. Use one of the CURLFTPSSL_CCC_* constants. Defaults to CURLFTPSSL_CCC_NONE. Available as of cURL 7.16.1.

CURLOPT_FTP_SSL_CCC = 154;