NAME

       CURLOPT_WRITEDATA - pointer passed to the write callback

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_WRITEDATA, void *pointer);

DESCRIPTION

       A  data  pointer  to  pass  to the write callback. If you use the CURLOPT_WRITEFUNCTION(3)
       option, this is the pointer you get in that callback's fourth and last argument. If you do
       not  use  a  write  callback, you must make pointer a 'FILE ' (cast to 'void ') as libcurl
       passes this to fwrite(3) when writing data.

       The internal CURLOPT_WRITEFUNCTION(3) writes the data  to  the  FILE  *  given  with  this
       option, or to stdout if this option has not been set.

       If  you are using libcurl as a Windows DLL, you MUST use a CURLOPT_WRITEFUNCTION(3) if you
       set this option or you might experience crashes.

DEFAULT

       stdout

PROTOCOLS

       This functionality affects all supported protocols

EXAMPLE

       A common technique is to use the  write  callback  to  store  the  incoming  data  into  a
       dynamically  growing allocated buffer, and then this CURLOPT_WRITEDATA(3) is used to point
       to  a  struct  or  the  buffer  to  store  data  in.  Like  in  the  getinmemory  example:
       https://curl.se/libcurl/c/getinmemory.html

HISTORY

       This option was formerly known as CURLOPT_FILE, the name CURLOPT_WRITEDATA(3) was added in
       7.9.7.

AVAILABILITY

       Added in curl 7.9.7

RETURN VALUE

       This returns CURLE_OK.

SEE ALSO

       CURLOPT_HEADERDATA(3), CURLOPT_READDATA(3), CURLOPT_WRITEFUNCTION(3)