CURLOPT_FTP_USE_EPSV

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

CURLOPT_FTP_USE_EPSV — true to first try an EPSV command for FTP transfers before reverting back to PASV. Set to false to disable EPSV.

CURLOPT_FTP_USE_EPSV = 85;