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58 lines
1.7 KiB
Groff
58 lines
1.7 KiB
Groff
.\" generated by cd2nroff 0.1 from CURLOPT_USE_SSL.md
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.TH CURLOPT_USE_SSL 3 libcurl
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.SH NAME
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CURLOPT_USE_SSL \- request using SSL / TLS for the transfer
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.SH SYNOPSIS
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.nf
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_USE_SSL, long level);
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.fi
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.SH DESCRIPTION
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Pass a long using one of the values from below, to make libcurl use your
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desired \fIlevel\fP of SSL for the transfer.
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These are all protocols that start out plain text and get "upgraded" to SSL
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using the STARTTLS command.
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This is for enabling SSL/TLS when you use FTP, SMTP, POP3, IMAP etc.
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.IP CURLUSESSL_NONE
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do not attempt to use SSL.
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.IP CURLUSESSL_TRY
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Try using SSL, proceed as normal otherwise. Note that server may close the
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connection if the negotiation does not succeed.
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.IP CURLUSESSL_CONTROL
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Require SSL for the control connection or fail with \fICURLE_USE_SSL_FAILED\fP.
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.IP CURLUSESSL_ALL
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Require SSL for all communication or fail with \fICURLE_USE_SSL_FAILED\fP.
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.SH DEFAULT
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CURLUSESSL_NONE
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.SH PROTOCOLS
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FTP, IMAP, POP3 and SMTP
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.SH EXAMPLE
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.nf
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int main(void)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com/dir/file.ext");
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/* require use of SSL for this, or fail */
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curl_easy_setopt(curl, CURLOPT_USE_SSL, (long)CURLUSESSL_ALL);
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/* Perform the request */
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curl_easy_perform(curl);
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}
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}
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.fi
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.SH AVAILABILITY
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Added in 7.11.0. This option was known as CURLOPT_FTP_SSL up to 7.16.4, and
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the constants were known as CURLFTPSSL_*
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Handled by LDAP since 7.81.0. Fully supported by the OpenLDAP backend only.
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.SH RETURN VALUE
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Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
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.SH SEE ALSO
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.BR CURLOPT_PROXY_SSLVERSION (3),
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.BR CURLOPT_SSLVERSION (3),
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.BR CURLOPT_SSL_OPTIONS (3)
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