mirror of
https://github.com/moparisthebest/curl
synced 2024-11-05 09:05:04 -05:00
64 lines
2.9 KiB
Groff
64 lines
2.9 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 https://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 curl_multi_assign 3 "9 Jul 2006" "libcurl 7.16.0" "libcurl Manual"
|
|
.SH NAME
|
|
curl_multi_assign \- set data to associate with an internal socket
|
|
.SH SYNOPSIS
|
|
#include <curl/curl.h>
|
|
|
|
CURLMcode curl_multi_assign(CURLM *multi_handle, curl_socket_t sockfd,
|
|
void *sockptr);
|
|
.SH DESCRIPTION
|
|
This function creates an association in the multi handle between the given
|
|
socket and a private pointer of the application. This is designed for
|
|
\fIcurl_multi_socket_action(3)\fP uses.
|
|
|
|
When set, the \fIsockptr\fP pointer will be passed to all future socket
|
|
callbacks for the specific \fIsockfd\fP socket.
|
|
|
|
If the given \fIsockfd\fP isn't already in use by libcurl, this function will
|
|
return an error.
|
|
|
|
libcurl only keeps one single pointer associated with a socket, so calling
|
|
this function several times for the same socket will make the last set pointer
|
|
get used.
|
|
|
|
The idea here being that this association (socket to private pointer) is
|
|
something that just about every application that uses this API will need and
|
|
then libcurl can just as well do it since it already has an internal hash
|
|
table lookup for this.
|
|
.SH "RETURN VALUE"
|
|
The standard CURLMcode for multi interface error codes.
|
|
.SH "TYPICAL USAGE"
|
|
In a typical application you allocate a struct or at least use some kind of
|
|
semi-dynamic data for each socket that we must wait for action on when using
|
|
the \fIcurl_multi_socket_action(3)\fP approach.
|
|
|
|
When our socket-callback gets called by libcurl and we get to know about yet
|
|
another socket to wait for, we can use \fIcurl_multi_assign(3)\fP to point out
|
|
the particular data so that when we get updates about this same socket again,
|
|
we don't have to find the struct associated with this socket by ourselves.
|
|
.SH AVAILABILITY
|
|
This function was added in libcurl 7.15.5.
|
|
.SH "SEE ALSO"
|
|
.BR curl_multi_setopt "(3), " curl_multi_socket_action "(3) "
|