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If enabled, this option makes libcurl use CCC (Clear Command Channel).

Component Version macOS Windows Server FileMaker Cloud FileMaker iOS SDK
CURL 2.5 Yes Yes Yes Yes Yes
MBS( "CURL.SetOptionFTPSSLCCC"; curl; Value )   More


Parameter Description Example value
curl The CURL session handle. $curl
Value Whether to use CCC command. 2


Returns "OK" on success.


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 number using one of the values below. (Added in 7.16.1)

CURLFTPSSL_CCC_NONE0Don't attempt to use CCC.
CURLFTPSSL_CCC_PASSIVE1Do not initiate the shutdown, but wait for the server to do it. Do not send a reply.
CURLFTPSSL_CCC_ACTIVE2Initiate the shutdown and wait for a reply.

See also FTP_SSL_CCC option in CURL manual.

See also

Created 18th August 2014, last changed 18th August 2014

CURL.SetOptionFTPSSLAuth   -   CURL.SetOptionFTPSkipPasvIP

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