mirror of
https://github.com/moparisthebest/curl
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ce07f0b8a1
Prior to this change some users did not understand that the "request" starts when the handle is added to the multi handle, or probably they did not understand that some of those transfers may be queued and that time is included in timeout. Reported-by: Jeroen Ooms Fixes https://github.com/curl/curl/issues/4486 Closes https://github.com/curl/curl/pull/4489
73 lines
2.9 KiB
Groff
73 lines
2.9 KiB
Groff
.\" **************************************************************************
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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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.\" * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
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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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.\" * are also available at https://curl.haxx.se/docs/copyright.html.
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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_TIMEOUT 3 "17 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
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.SH NAME
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CURLOPT_TIMEOUT \- set maximum time the request is allowed to take
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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_TIMEOUT, long timeout);
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.SH DESCRIPTION
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Pass a long as parameter containing \fItimeout\fP - the maximum time in
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seconds that you allow the libcurl transfer operation to take. Normally, name
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lookups can take a considerable time and limiting operations risk aborting
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perfectly normal operations. This option may cause libcurl to use the SIGALRM
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signal to timeout system calls.
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In unix-like systems, this might cause signals to be used unless
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\fICURLOPT_NOSIGNAL(3)\fP is set.
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If both \fICURLOPT_TIMEOUT(3)\fP and \fICURLOPT_TIMEOUT_MS(3)\fP are set, the
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value set last will be used.
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Since this option puts a hard limit on how long time a request is allowed to
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take, it has limited use in dynamic use cases with varying transfer times. That
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is especially apparent when using the multi interface, which may queue the
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transfer, and that time is included. You are advised to explore
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\fICURLOPT_LOW_SPEED_LIMIT(3)\fP, \fICURLOPT_LOW_SPEED_TIME(3)\fP or using
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\fICURLOPT_PROGRESSFUNCTION(3)\fP to implement your own timeout logic.
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.SH DEFAULT
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Default timeout is 0 (zero) which means it never times out during transfer.
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.SH PROTOCOLS
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All
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.SH EXAMPLE
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.nf
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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, "http://example.com");
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/* complete within 20 seconds */
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curl_easy_setopt(curl, CURLOPT_TIMEOUT, 20L);
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curl_easy_perform(curl);
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}
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.fi
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.SH AVAILABILITY
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Always
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.SH RETURN VALUE
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Returns CURLE_OK. Returns CURLE_BAD_FUNCTION_ARGUMENT if set to a negative
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value or a value that when converted to milliseconds is too large.
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.SH "SEE ALSO"
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.BR CURLOPT_TIMEOUT_MS "(3), "
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.BR CURLOPT_CONNECTTIMEOUT "(3), " CURLOPT_LOW_SPEED_LIMIT "(3), "
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