table of contents
CURLOPT_READDATA(3) | curl_easy_setopt options | CURLOPT_READDATA(3) |
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 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¶
November 4, 2020 | libcurl 7.76.1 |