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.
SEE ALSO
CURLOPT_READFUNCTION(3), CURLOPT_WRITEDATA(3),
libcurl 7.81.0 November 26, 2021 CURLOPT_READDATA(3)
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