************************************************************************** * _ _ ____ _ * Project ___| | | | _ \| | * / __| | | | |_) | | * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel (at] 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. * ************************************************************************** CURLOPT_READDATA 3 "16 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
NAME
CURLOPT_READDATA - custom pointer passed to the read callback
SYNOPSIS
#include <
curl/
curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_READDATA, void *pointer);
DESCRIPTION
Data
pointer to pass to the file read function. If you use the
CURLOPT_READFUNCTION(3) option, this is the pointer you'll get as
input in the 4th argument to the callback.
If you don't specify a read callback but instead rely on the default internal
read function, this data must be a valid readable FILE * (cast to 'void *').
If you're using libcurl as a win32 DLL, you MUST use a
CURLOPT_READFUNCTION(3) if you set this option.
DEFAULT
By default, this is a FILE * to stdin.
PROTOCOLS
This is used for all protocols when sending data.
EXAMPLE
CURL *curl = curl_easy_init();
struct MyData this;
if(curl) {
curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
/* pass pointer that gets passed in to the
CURLOPT_READFUNCTION callback */
curl_easy_setopt(curl, CURLOPT_READDATA, &this);
curl_easy_perform(curl);
}
AVAILABILITY
This option was once known by the older name CURLOPT_INFILE, the name
CURLOPT_READDATA(3) was introduced in 7.9.7.
RETURN VALUE
This will return CURLE_OK.
"SEE ALSO"
CURLOPT_READFUNCTION "(3), " CURLOPT_WRITEDATA "(3), "