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CURLOPT_QUICK_EXIT: don't wait for DNS thread on exit

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Fixes #2975
Closes #9147
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Alexandre Ferrieux 2022-07-12 23:40:05 +02:00 • committed by Daniel Stenberg
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11 changed files with 87 additions and 2 deletions
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2
docs/libcurl/curl_easy_setopt.3
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@ -699,6 +699,8 @@ Share object to use. See \fICURLOPT_SHARE(3)\fP
Mode for creating new remote files. See \fICURLOPT_NEW_FILE_PERMS(3)\fP
.IP CURLOPT_NEW_DIRECTORY_PERMS
Mode for creating new remote directories. See \fICURLOPT_NEW_DIRECTORY_PERMS(3)\fP
.IP CURLOPT_QUICK_EXIT
To be set by toplevel tools like "curl" to skip lengthy cleanups when they are about to call exit() anyway. See \fICURLOPT_QUICK_EXIT(3)\fP
.SH TELNET OPTIONS
.IP CURLOPT_TELNETOPTIONS
TELNET options. See \fICURLOPT_TELNETOPTIONS(3)\fP

59
docs/libcurl/opts/CURLOPT_QUICK_EXIT.3 Normal file
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@ -0,0 +1,59 @@
.\" **************************************************************************
.\" * _ _ ____ _
.\" * 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_QUICK_EXIT 3 "30 Sep 2022" "libcurl 7.87.0" "curl_easy_setopt options"
.SH NAME
CURLOPT_QUICK_EXIT \- allow to exit quickly
.SH SYNOPSIS
.nf
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_QUICK_EXIT,
long value);
.SH DESCRIPTION
Pass a long as a parameter, 1L meaning that when recovering from a timeout,
libcurl should skip lengthy cleanups that are intended to avoid all kinds of
leaks (threads etc.), as the caller program is about to call exit() anyway.
This allows for a swift termination after a DNS timeout for example, by
canceling and/or forgetting about a resolver thread, at the expense of a
possible (though short-lived) leak of associated resources.
.SH DEFAULT
0
.SH PROTOCOLS
All
.SH EXAMPLE
.nf
CURL *curl = curl_easy_init();
if(curl) {
CURLcode ret;
curl_easy_setopt(curl, CURLOPT_QUICK_EXIT, 1L);
ret = curl_easy_perform(curl);
}
.fi
.SH AVAILABILITY
Added in 7.87.0
.SH RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
.SH "SEE ALSO"
.BR CURLOPT_RESOLVE "(3), "

1
docs/libcurl/symbols-in-versions
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@ -687,6 +687,7 @@ CURLOPT_MAIL_AUTH 7.25.0
CURLOPT_MAIL_FROM 7.20.0
CURLOPT_MAIL_RCPT 7.20.0
CURLOPT_MAIL_RCPT_ALLLOWFAILS 7.69.0
CURLOPT_QUICK_EXIT 7.87.0
CURLOPT_MAX_RECV_SPEED_LARGE 7.15.5
CURLOPT_MAX_SEND_SPEED_LARGE 7.15.5
CURLOPT_MAXAGE_CONN 7.65.0