CURLOPT_SEEKDATA man page

CURLOPT_SEEKDATA ā€” 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(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),

Referenced By

curl_easy_setopt(3), CURLOPT_SEEKFUNCTION(3).

August 12, 2017 libcurl 7.56.0 curl_easy_setopt options