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CURLOPT_READDATA(3) libcurl 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
 CURLOPT_READFUNCTION(3) option, this is the pointer you will get as
 input in the fourth 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_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
 CURLOPT_READFUNCTION(3), CURLOPT_WRITEDATA(3),
ibcurl 8.1.2 April 26, 2023 CURLOPT_READDATA(3)

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