curl / libcurl / API / curl_easy_setopt / CURLOPT_SEEKDATA

CURLOPT_SEEKDATA explained

NAME

CURLOPT_SEEKDATA - custom pointer passed to the seek callback

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 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, CURLOPT_DEBUGFUNCTION

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