CURLOPT_READDATA - pointer passed to the read callback
#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_READDATA, void *pointer);
CURLOPT_READDATA(3) curl_easy_setopt options CURLOPT_READDATA(3)
NAME
CURLOPT_READDATA - 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 CUR-
LOPT_READFUNCTION(3) option, this is the pointer you will get as input
in the 4th argument to the callback.
If you do not 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 are using libcurl as a win32 DLL, you MUST use a CURLOPT_READ-
FUNCTION(3) if you set this option or you will experience crashes.
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, "https://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.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
+---------------+------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+------------------+
|Availability | web/curl |
+---------------+------------------+
|Stability | Uncommitted |
+---------------+------------------+
SEE ALSO
CURLOPT_READFUNCTION(3), CURLOPT_WRITEDATA(3),
NOTES
Source code for open source software components in Oracle Solaris can
be found at https://www.oracle.com/downloads/opensource/solaris-source-
code-downloads.html.
This software was built from source available at
https://github.com/oracle/solaris-userland. The original community
source was downloaded from https://curl.se/down-
load/curl-7.83.1.tar.bz2.
Further information about this software can be found on the open source
community website at http://curl.haxx.se/.
libcurl 7.83.1 November 26, 2021 CURLOPT_READDATA(3)