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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
       CURL *curl = curl_easy_init();
       if(curl)	{
	 curl_easy_setopt(curl,	CURLOPT_URL, "ftp://example.com/file.txt");
	 curl_easy_setopt(curl,	CURLOPT_USE_SSL, CURLUSESSL_CONTROL);
	 /* go back to clear-text FTP after authenticating */
	 curl_easy_setopt(curl,	CURLOPT_FTP_SSL_CCC, CURLFTPSSL_CCC_ACTIVE);
	 ret = curl_easy_perform(curl);
	 curl_easy_cleanup(curl);
       }

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	7.54.1			 May 31, 2017		CURLOPT_FTP_SSL_CCC(3)

NAME | SYNOPSIS | DESCRIPTION | DEFAULT | PROTOCOLS | EXAMPLE | AVAILABILITY | RETURN VALUE | SEE ALSO

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