75 строки
2.9 KiB
Groff
75 строки
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 - 2021, 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.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 \- maximum time the transfer is allowed to complete
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.SH SYNOPSIS
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.nf
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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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.fi
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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, "https://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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