mirror of
https://github.com/moparisthebest/curl
synced 2024-11-17 23:15:08 -05:00
67 lines
3.1 KiB
Groff
67 lines
3.1 KiB
Groff
.\" **************************************************************************
|
|
.\" * _ _ ____ _
|
|
.\" * Project ___| | | | _ \| |
|
|
.\" * / __| | | | |_) | |
|
|
.\" * | (__| |_| | _ <| |___
|
|
.\" * \___|\___/|_| \_\_____|
|
|
.\" *
|
|
.\" * Copyright (C) 1998 - 2014, 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 http://curl.haxx.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.
|
|
.\" *
|
|
.\" **************************************************************************
|
|
.TH libcurl-share 3 "8 Aug 2003" "libcurl 7.10.7" "libcurl share interface"
|
|
.SH NAME
|
|
libcurl-share \- how to use the share interface
|
|
.SH DESCRIPTION
|
|
This is an overview on how to use the libcurl share interface in your C
|
|
programs. There are specific man pages for each function mentioned in
|
|
here.
|
|
|
|
All functions in the share interface are prefixed with curl_share.
|
|
|
|
.SH "OBJECTIVES"
|
|
The share interface was added to enable sharing of data between curl
|
|
\&"handles".
|
|
.SH "ONE SET OF DATA - MANY TRANSFERS"
|
|
You can have multiple easy handles share data between them. Have them update
|
|
and use the \fBsame\fP cookie database, DNS cache, TLS session cache! This
|
|
way, each single transfer will take advantage from data updates made by the
|
|
other transfer(s). The sharing interface, however, does not share active or
|
|
persistent connections between different easy handles.
|
|
.SH "SHARE OBJECT"
|
|
You create a shared object with \fIcurl_share_init(3)\fP. It returns a handle
|
|
for a newly created one.
|
|
|
|
You tell the shared object what data you want it to share by using
|
|
\fIcurl_share_setopt(3)\fP.
|
|
|
|
Since you can use this share from multiple threads, and libcurl has no
|
|
internal thread synchronization, you must provide mutex callbacks if you're
|
|
using this multi-threaded. You set lock and unlock functions with
|
|
\fIcurl_share_setopt(3)\fP too.
|
|
|
|
Then, you make an easy handle to use this share, you set the
|
|
\fICURLOPT_SHARE(3)\fP option with \fIcurl_easy_setopt(3)\fP, and pass in
|
|
share handle. You can make any number of easy handles share the same share
|
|
handle.
|
|
|
|
To make an easy handle stop using that particular share, you set
|
|
\fICURLOPT_SHARE(3)\fP to NULL for that easy handle. To make a handle stop
|
|
sharing a particular data, you can \fICURLSHOPT_UNSHARE\fP it.
|
|
|
|
When you're done using the share, make sure that no easy handle is still using
|
|
it, and call \fIcurl_share_cleanup(3)\fP on the handle.
|
|
.SH "SEE ALSO"
|
|
.BR curl_share_init "(3), " curl_share_setopt "(3), " curl_share_cleanup "(3)"
|
|
.BR libcurl-errors "(3), " libcurl-easy "(3), " libcurl-multi "(3) "
|