mirror of
https://github.com/curl/curl.git
synced 2024-12-09 06:30:06 +08:00
5b060a4108
... instead of using future tense. + numerous cleanups and improvements + stick to "reuse" not "re-use" + fewer contractions Closes #11713
69 lines
2.8 KiB
Groff
69 lines
2.8 KiB
Groff
.\" **************************************************************************
|
|
.\" * _ _ ____ _
|
|
.\" * Project ___| | | | _ \| |
|
|
.\" * / __| | | | |_) | |
|
|
.\" * | (__| |_| | _ <| |___
|
|
.\" * \___|\___/|_| \_\_____|
|
|
.\" *
|
|
.\" * Copyright (C) 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 CURLMOPT_MAX_TOTAL_CONNECTIONS 3 "4 Nov 2014" libcurl libcurl
|
|
.SH NAME
|
|
CURLMOPT_MAX_TOTAL_CONNECTIONS \- max simultaneously open connections
|
|
.SH SYNOPSIS
|
|
.nf
|
|
#include <curl/curl.h>
|
|
|
|
CURLMcode curl_multi_setopt(CURLM *handle, CURLMOPT_MAX_TOTAL_CONNECTIONS,
|
|
long amount);
|
|
.fi
|
|
.SH DESCRIPTION
|
|
Pass a long for the \fBamount\fP. The set number is used as the maximum number
|
|
of simultaneously open connections in total using this multi handle. For each
|
|
new session, libcurl might open a new connection up to the limit set by
|
|
\fICURLMOPT_MAX_TOTAL_CONNECTIONS(3)\fP. When the limit is reached, new
|
|
sessions are held pending until there are available connections. If
|
|
\fICURLMOPT_PIPELINING(3)\fP is enabled, libcurl can try multiplexing if the
|
|
host is capable of it.
|
|
|
|
When more transfers are added to the multi handle than what can be performed
|
|
due to the set limit, they get queued up waiting for their chance. When that
|
|
happens, the \fICURLOPT_TIMEOUT_MS(3)\fP timeout is counted inclusive of the
|
|
waiting time, meaning that if you set a too narrow timeout in such a case the
|
|
transfer might never even start before it times out.
|
|
|
|
Even in the queued up situation, the \fICURLOPT_CONNECTTIMEOUT_MS(3)\fP
|
|
timeout is however treated as a per-connect timeout.
|
|
.SH DEFAULT
|
|
The default value is 0, which means that there is no limit. It is then simply
|
|
controlled by the number of easy handles added.
|
|
.SH PROTOCOLS
|
|
All
|
|
.SH EXAMPLE
|
|
.nf
|
|
CURLM *m = curl_multi_init();
|
|
/* never do more than 15 connections */
|
|
curl_multi_setopt(m, CURLMOPT_MAX_TOTAL_CONNECTIONS, 15L);
|
|
.fi
|
|
.SH AVAILABILITY
|
|
Added in 7.30.0
|
|
.SH RETURN VALUE
|
|
Returns CURLM_OK if the option is supported, and CURLM_UNKNOWN_OPTION if not.
|
|
.SH "SEE ALSO"
|
|
.BR CURLMOPT_MAXCONNECTS "(3), " CURLMOPT_MAX_HOST_CONNECTIONS "(3), "
|