1CURLOPT_FTPSSLAUTH(3) curl_easy_setopt options CURLOPT_FTPSSLAUTH(3)
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6 CURLOPT_FTPSSLAUTH - set order in which to attempt TLS vs SSL when
7 using FTP
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10 #include <curl/curl.h>
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12 CURLcode curl_easy_setopt(CURL *handle, CURLOPT_FTPSSLAUTH, long
13 order);
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16 Pass a long using one of the values from below, to alter how libcurl
17 issues "AUTH TLS" or "AUTH SSL" when FTP over SSL is activated. This is
18 only interesting if CURLOPT_USE_SSL(3) is also set.
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20 Possible order values:
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22 CURLFTPAUTH_DEFAULT
23 Allow libcurl to decide.
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25 CURLFTPAUTH_SSL
26 Try "AUTH SSL" first, and only if that fails try "AUTH TLS".
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28 CURLFTPAUTH_TLS
29 Try "AUTH TLS" first, and only if that fails try "AUTH SSL".
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32 CURLFTPAUTH_DEFAULT
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35 FTP
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38 CURL *curl = curl_easy_init();
39 if(curl) {
40 curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com/file.txt");
41 curl_easy_setopt(curl, CURLOPT_USE_SSL, CURLUSESSL_TRY);
42 /* funny server, ask for SSL before TLS */
43 curl_easy_setopt(curl, CURLOPT_FTPSSLAUTH, CURLFTPAUTH_SSL);
44 ret = curl_easy_perform(curl);
45 curl_easy_cleanup(curl);
46 }
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49 Added in 7.12.2
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52 Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION
53 if not.
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56 CURLOPT_USE_SSL(3), CURLOPT_FTP_SSL_CCC(3),
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60libcurl 7.64.0 May 31, 2017 CURLOPT_FTPSSLAUTH(3)