mirror of
https://github.com/curl/curl.git
synced 2024-12-15 06:40:09 +08:00
79 lines
2.9 KiB
Groff
79 lines
2.9 KiB
Groff
.\" **************************************************************************
|
|
.\" * _ _ ____ _
|
|
.\" * Project ___| | | | _ \| |
|
|
.\" * / __| | | | |_) | |
|
|
.\" * | (__| |_| | _ <| |___
|
|
.\" * \___|\___/|_| \_\_____|
|
|
.\" *
|
|
.\" * Copyright (C) 1998 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
|
|
.\" *
|
|
.\" * This software is licensed as described in the file COPYING, which
|
|
.\" * you should have received as part of this distribution. The terms
|
|
.\" * are also available at https://curl.se/docs/copyright.html.
|
|
.\" *
|
|
.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
|
|
.\" * copies of the Software, and permit persons to whom the Software is
|
|
.\" * furnished to do so, under the terms of the COPYING file.
|
|
.\" *
|
|
.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
.\" * KIND, either express or implied.
|
|
.\" *
|
|
.\" * SPDX-License-Identifier: curl
|
|
.\" *
|
|
.\" **************************************************************************
|
|
.\"
|
|
.TH CURLOPT_CA_CACHE_TIMEOUT 3 "21 Dec 2022" "libcurl 7.87.0" "curl_easy_setopt options"
|
|
.SH NAME
|
|
CURLOPT_CA_CACHE_TIMEOUT \- life-time for cached certificate stores
|
|
.SH SYNOPSIS
|
|
.nf
|
|
#include <curl/curl.h>
|
|
|
|
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_CA_CACHE_TIMEOUT, long age);
|
|
.fi
|
|
.SH DESCRIPTION
|
|
Pass a long, this sets the timeout in seconds. This tells libcurl the maximum
|
|
time any cached certificate store it has in memory may be kept and reused for
|
|
new connections. Once the timeout has expired, a subsequent fetch requiring a
|
|
certificate store will have to build a new one.
|
|
|
|
Building a certificate store from a \fICURLOPT_CAINFO\fP file is a slow
|
|
operation so curl may cache the generated certificate store internally to speed
|
|
up future connections.
|
|
|
|
Set to zero to completely disable caching, or set to -1 to retain the cached
|
|
store remain forever. By default, libcurl caches this info for 24 hours.
|
|
.SH DEFAULT
|
|
86400 (24 hours)
|
|
.SH PROTOCOLS
|
|
All
|
|
.SH EXAMPLE
|
|
.nf
|
|
CURL *curl = curl_easy_init();
|
|
if(curl) {
|
|
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/foo.bin");
|
|
|
|
/* only reuse certificate stores for a short time */
|
|
curl_easy_setopt(curl, CURLOPT_CA_CACHE_TIMEOUT, 60L);
|
|
|
|
ret = curl_easy_perform(curl);
|
|
|
|
/* in this second request, the cache will not be used if more than
|
|
sixty seconds have passed since the previous connection */
|
|
ret = curl_easy_perform(curl);
|
|
|
|
curl_easy_cleanup(curl);
|
|
}
|
|
.fi
|
|
.SH AVAILABILITY
|
|
This option was added in curl 7.87.0.
|
|
|
|
Currently the only SSL backend to implement this certificate store caching
|
|
functionality is the OpenSSL (and forks) backend.
|
|
.SH RETURN VALUE
|
|
Returns CURLE_OK
|
|
.SH "SEE ALSO"
|
|
.BR CURLOPT_CAINFO "(3), "
|
|
.BR CURLOPT_CAINFO_BLOB "(3), " CURLOPT_CAPATH "(3), "
|
|
.BR CURLOPT_SSL_VERIFYPEER "(3), " CURLOPT_SSL_VERIFYHOST "(3), "
|