mirror of
https://github.com/curl/curl.git
synced 2024-11-27 05:50:21 +08:00
68 lines
2.4 KiB
Groff
68 lines
2.4 KiB
Groff
.\" **************************************************************************
|
|
.\" * _ _ ____ _
|
|
.\" * Project ___| | | | _ \| |
|
|
.\" * / __| | | | |_) | |
|
|
.\" * | (__| |_| | _ <| |___
|
|
.\" * \___|\___/|_| \_\_____|
|
|
.\" *
|
|
.\" * Copyright (C) 1998 - 2017, 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 CURLOPT_SOCKOPTDATA 3 "16 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
|
|
.SH NAME
|
|
CURLOPT_SOCKOPTDATA \- custom pointer to pass to sockopt callback
|
|
.SH SYNOPSIS
|
|
#include <curl/curl.h>
|
|
|
|
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SOCKOPTDATA, void *pointer);
|
|
.SH DESCRIPTION
|
|
Pass a \fIpointer\fP that will be untouched by libcurl and passed as the first
|
|
argument in the sockopt callback set with \fICURLOPT_SOCKOPTFUNCTION(3)\fP.
|
|
.SH DEFAULT
|
|
The default value of this parameter is NULL.
|
|
.SH PROTOCOLS
|
|
All
|
|
.SH EXAMPLE
|
|
.nf
|
|
static int sockopt_callback(void *clientp, curl_socket_t curlfd,
|
|
curlsocktype purpose)
|
|
{
|
|
int val = *(int *)clientp;
|
|
setsockopt(curldfd, SOL_SOCKET, SO_RCVBUF, (const char *)&val, sizeof(val));
|
|
return CURL_SOCKOPT_OK;
|
|
}
|
|
|
|
curl = curl_easy_init();
|
|
if(curl) {
|
|
int recvbuffersize = 256 * 1024;
|
|
|
|
curl_easy_setopt(curl, CURLOPT_URL, "http://example.com/");
|
|
|
|
/* call this function to set options for the socket */
|
|
curl_easy_setopt(curl, CURLOPT_SOCKOPTFUNCTION, sockopt_callback);
|
|
curl_easy_setopt(curl, CURLOPT_SOCKOPTDATA, &recvbuffersize);
|
|
|
|
res = curl_easy_perform(curl);
|
|
|
|
curl_easy_cleanup(curl);
|
|
}
|
|
.fi
|
|
.SH AVAILABILITY
|
|
Added in 7.16.0
|
|
.SH RETURN VALUE
|
|
Returns \fICURLE_OK\fP if the option is supported, and \fICURLE_UNKNOWN_OPTION\fP if not.
|
|
.SH "SEE ALSO"
|
|
.BR CURLOPT_SOCKOPTFUNCTION "(3), " CURLOPT_OPENSOCKETFUNCTION "(3), "
|