CURLOPT_FTPSSLAUTH

Section: C Library Functions (3)
Updated: 202-0-19
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NAME

CURLOPT_FTPSSLAUTH - order in which to attempt TLS vs SSL  

SYNOPSIS

#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_FTPSSLAUTH, long order);

 

DESCRIPTION

Pass a long using one of the values from below, to alter how libcurl issues "AUTH TLS" or "AUTH SSL" when FTP over SSL is activated. This is only interesting if CURLOPT_USE_SSL(3) is also set.

Possible order values:

CURLFTPAUTH_DEFAULT

Allow libcurl to decide.

CURLFTPAUTH_SSL

Try "AUTH SSL" first, and only if that fails try "AUTH TLS".

CURLFTPAUTH_TLS

Try "AUTH TLS" first, and only if that fails try "AUTH SSL".

 

DEFAULT

CURLFTPAUTH_DEFAULT  

PROTOCOLS

This functionality affects ftp only  

EXAMPLE

int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {
    CURLcode result;
    curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com/file.txt");
    curl_easy_setopt(curl, CURLOPT_USE_SSL, CURLUSESSL_TRY);
    /* funny server, ask for SSL before TLS */
    curl_easy_setopt(curl, CURLOPT_FTPSSLAUTH, CURLFTPAUTH_SSL);
    result = curl_easy_perform(curl);
    curl_easy_cleanup(curl);
  }
}

 

HISTORY

CURLFTPAUTH_* enums became long types in 8.16.0, prior to this version a long cast was necessary when passed to curl_easy_setopt(3).  

AVAILABILITY

Added in curl 7.12.2  

RETURN VALUE

curl_easy_setopt(3) returns a CURLcode indicating success or error.

CURLE_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors(3).  

SEE ALSO

CURLOPT_FTP_SSL_CCC(3), CURLOPT_USE_SSL(3)

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Index

NAME

SYNOPSIS

DESCRIPTION

DEFAULT

PROTOCOLS

EXAMPLE

HISTORY

AVAILABILITY

RETURN VALUE

SEE ALSO