2014-06-18 08:38:24 -04:00
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.\" **************************************************************************
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.\" * _ _ ____ _
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.\" * Project ___| | | | _ \| |
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.\" * / __| | | | |_) | |
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.\" * | (__| |_| | _ <| |___
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.\" * \___|\___/|_| \_\_____|
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.\" *
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2017-05-31 05:56:28 -04:00
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.\" * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
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2014-06-18 08:38:24 -04:00
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.\" *
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.\" * This software is licensed as described in the file COPYING, which
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.\" * you should have received as part of this distribution. The terms
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2016-02-02 18:19:02 -05:00
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.\" * are also available at https://curl.haxx.se/docs/copyright.html.
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2014-06-18 08:38:24 -04:00
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.\" *
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.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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.\" * copies of the Software, and permit persons to whom the Software is
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.\" * furnished to do so, under the terms of the COPYING file.
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.\" *
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.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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.\" * KIND, either express or implied.
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.\" *
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.\" **************************************************************************
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.\"
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.TH CURLOPT_DNS_USE_GLOBAL_CACHE 3 "17 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
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.SH NAME
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CURLOPT_DNS_USE_GLOBAL_CACHE \- enable/disable global DNS cache
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.SH SYNOPSIS
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DNS_USE_GLOBAL_CACHE,
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long enable);
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.SH DESCRIPTION
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Pass a long. If the \fIenable\fP value is 1, it tells curl to use a global DNS
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cache that will survive between easy handle creations and deletions. This is
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not thread-safe and this will use a global variable.
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\fBWARNING:\fP this option is considered obsolete. Stop using it. Switch over
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to using the share interface instead! See \fICURLOPT_SHARE(3)\fP and
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\fIcurl_share_init(3)\fP.
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.SH DEFAULT
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0
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.SH PROTOCOLS
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All
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.SH EXAMPLE
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2017-05-31 05:56:28 -04:00
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.nf
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CURL *curl = curl_easy_init();
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if(curl) {
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CURLcode ret;
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
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/* switch off the use of a global, thread unsafe, cache */
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curl_easy_setopt(curl, CURLOPT_DNS_USE_GLOBAL_CACHE, 0L);
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ret = curl_easy_perform(curl);
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curl_easy_cleanup(curl);
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}
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.fi
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.SH AVAILABILITY
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Subject for removal in the future. Do not use!
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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_SHARE "(3), " CURLOPT_DNS_CACHE_TIMEOUT "(3), "
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