curlopt_ftp_ssl_ccc(3) [mojave man page]

CURLOPT_FTP_SSL_CCC(3)					     curl_easy_setopt options					    CURLOPT_FTP_SSL_CCC(3)

NAME

       CURLOPT_FTP_SSL_CCC - switch off SSL again with FTP after auth

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_FTP_SSL_CCC,
				 long how);

DESCRIPTION

       If  enabled,  this  option makes libcurl use CCC (Clear Command Channel). It shuts down the SSL/TLS layer after authenticating. The rest of
       the control channel communication will be unencrypted. This allows NAT routers to follow the FTP transaction. Pass a long using one of  the
       values below

       CURLFTPSSL_CCC_NONE
	      Don't attempt to use CCC.

       CURLFTPSSL_CCC_PASSIVE
	      Do not initiate the shutdown, but wait for the server to do it. Do not send a reply.

       CURLFTPSSL_CCC_ACTIVE
	      Initiate the shutdown and wait for a reply.

DEFAULT

       CURLFTPSSL_CCC_NONE

PROTOCOLS

       FTP

EXAMPLE

       TODO

AVAILABILITY

       Added in 7.16.1

RETURN VALUE

       Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

SEE ALSO

       CURLOPT_USE_SSL(3), CURLOPT_FTPSSLAUTH(3),

libcurl 7.54.0							 February 03, 2016					    CURLOPT_FTP_SSL_CCC(3)

CURLOPT_USE_SSL(3)					     curl_easy_setopt options						CURLOPT_USE_SSL(3)

NAME

       CURLOPT_USE_SSL - request using SSL / TLS for the transfer

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_USE_SSL, long level);

DESCRIPTION

       Pass a long using one of the values from below, to make libcurl use your desired level of SSL for the transfer.

       These are all protocols that start out plain text and get "upgraded" to SSL using the STARTTLS command.

       This is for enabling SSL/TLS when you use FTP, SMTP, POP3, IMAP etc.

       CURLUSESSL_NONE
	      Don't attempt to use SSL.

       CURLUSESSL_TRY
	      Try using SSL, proceed as normal otherwise.

       CURLUSESSL_CONTROL
	      Require SSL for the control connection or fail with CURLE_USE_SSL_FAILED.

       CURLUSESSL_ALL
	      Require SSL for all communication or fail with CURLE_USE_SSL_FAILED.

DEFAULT

       CURLUSESSL_NONE

PROTOCOLS

       FTP, SMTP, POP3, IMAP

EXAMPLE

       CURL *curl = curl_easy_init();
       if(curl) {
	 curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com/dir/file.ext");

	 /* require use of SSL for this, or fail */
	 curl_easy_setopt(curl, CURLOPT_USE_SSL, CURLUSESSL_ALL);

	 /* Perform the request */
	 curl_easy_perform(curl);
       }

AVAILABILITY

       Added in 7.11.0. This option was known as CURLOPT_FTP_SSL up to 7.16.4, and the constants were known as CURLFTPSSL_*

RETURN VALUE

       Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

SEE ALSO

       CURLOPT_SSLVERSION(3), CURLOPT_SSL_OPTIONS(3),

libcurl 7.54.0							 February 03, 2016						CURLOPT_USE_SSL(3)