CURLOPT_SEEKDATA(3)

CURLOPT_SEEKDATA(3) curl_easy_setopt options  CURLOPT_SEEKDATA(3)

NAME

     CURLOPT_SEEKDATA - custom pointer passed to the  seek  call-
     back

SYNOPSIS

     #include <curl/curl.h>

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

DESCRIPTION

     Data pointer to pass to the seek callback function.  If  you
     use  the CURLOPT_SEEKFUNCTION(3) option, this is the pointer
     you'll get as input.

DEFAULT

     If you don't set this, NULL is passed to the callback.

PROTOCOLS

     HTTP, FTP, SFTP

EXAMPLE

     static int seek_cb(void *userp, curl_off_t offset, int origin)
     {
       struct data *d = (struct data *)userp;
       lseek(our_fd, offset, origin);
       return CURL_SEEKFUNC_OK;
     }

     {
       struct data seek_data;
       curl_easy_setopt(CURL *handle, CURLOPT_SEEKFUNCTION, seek_cb);
       curl_easy_setopt(CURL *handle, CURLOPT_SEEKDATA, &seek_data);
     }

AVAILABILITY

     Added in 7.18.0

RETURN VALUE

SEE ALSO

     CURLOPT_STDERR(3), CURLOPT_DEBUGFUNCTION(3),

libcurl 7.58.0    Last change: August 12, 2017                  1