CURLOPT_READDATA(3)

CURLOPT_READDATA(3) curl_easy_setopt options  CURLOPT_READDATA(3)

NAME

     CURLOPT_READDATA - custom pointer passed to the  read  call-
     back

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.

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, "http://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 7.58.0      Last change: May 01, 2016                   1