mirror of
https://github.com/curl/curl.git
synced 2026-04-22 21:12:12 +03:00
46429d6f44
- update configuration and invocation.
- install via pip.
- drop a file exception.
- alpha sort proselint settings.
- FILEFORMAT: update text about XML compliance.
- CI job takes 22 seconds total.
Ref: https://github.com/amperser/proselint/releases/tag/v0.16.0
Follow-up to 38bfe1c2aa #15314
Closes #19931
97 lines
2 KiB
Markdown
97 lines
2 KiB
Markdown
---
|
|
c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
|
|
SPDX-License-Identifier: curl
|
|
Title: CURLOPT_USE_SSL
|
|
Section: 3
|
|
Source: libcurl
|
|
See-also:
|
|
- CURLOPT_PROXY_SSLVERSION (3)
|
|
- CURLOPT_SSLVERSION (3)
|
|
- CURLOPT_SSL_OPTIONS (3)
|
|
Protocol:
|
|
- FTP
|
|
- SMTP
|
|
- POP3
|
|
- IMAP
|
|
Added-in: 7.17.0
|
|
---
|
|
|
|
# NAME
|
|
|
|
CURLOPT_USE_SSL - request using SSL / TLS for the transfer
|
|
|
|
# SYNOPSIS
|
|
|
|
~~~c
|
|
#include <curl/curl.h>
|
|
|
|
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_USE_SSL, long level);
|
|
~~~
|
|
|
|
# DESCRIPTION
|
|
|
|
Pass a long using one of the values from below, to make libcurl use your
|
|
desired *level* of SSL for the transfer.
|
|
|
|
These are all protocols that start out plain text and get "upgraded" to SSL
|
|
using the STARTTLS command.
|
|
|
|
This is for enabling SSL/TLS when you use FTP, SMTP, POP3, IMAP etc.
|
|
|
|
## CURLUSESSL_NONE
|
|
|
|
do not attempt to use SSL.
|
|
|
|
## CURLUSESSL_TRY
|
|
|
|
Try using SSL, proceed as normal otherwise. Note that server may close the
|
|
connection if the negotiation fails.
|
|
|
|
## CURLUSESSL_CONTROL
|
|
|
|
Require SSL for the control connection or fail with *CURLE_USE_SSL_FAILED*.
|
|
|
|
## CURLUSESSL_ALL
|
|
|
|
Require SSL for all communication or fail with *CURLE_USE_SSL_FAILED*.
|
|
|
|
# DEFAULT
|
|
|
|
CURLUSESSL_NONE
|
|
|
|
# %PROTOCOLS%
|
|
|
|
# EXAMPLE
|
|
|
|
~~~c
|
|
int main(void)
|
|
{
|
|
CURL *curl = curl_easy_init();
|
|
if(curl) {
|
|
curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com/dir/file.ext");
|
|
|
|
/* require use of SSL for this, or fail */
|
|
curl_easy_setopt(curl, CURLOPT_USE_SSL, CURLUSESSL_ALL);
|
|
|
|
/* Perform the request */
|
|
curl_easy_perform(curl);
|
|
}
|
|
}
|
|
~~~
|
|
|
|
# HISTORY
|
|
|
|
This option was known as CURLOPT_FTP_SSL up to 7.16.4. Supported by LDAP since
|
|
7.81.0. Fully supported by the OpenLDAP backend only.
|
|
|
|
**CURLUSESSL_*** enums became `long` types in 8.13.0, prior to this version
|
|
a `long` cast was necessary when passed to curl_easy_setopt(3).
|
|
|
|
# %AVAILABILITY%
|
|
|
|
# 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).
|