CURLOPT_RESUME_FROM(3) curl_easy_setopt options CURLOPT_RESUME_FROM(3)NAMECURLOPT_RESUME_FROM - set a point to resume transfer from
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_RESUME_FROM, long
from);
DESCRIPTION
Pass a long as parameter. It contains the offset in number of bytes
that you want the transfer to start from. Set this option to 0 to make
the transfer start from the beginning (effectively disabling resume).
For FTP, set this option to -1 to make the transfer start from the end
of the target file (useful to continue an interrupted upload).
When doing uploads with FTP, the resume position is where in the
local/source file libcurl should try to resume the upload from and it
will then append the source file to the remote target file.
If you need to resume a transfer beyond the 2GB limit, use CUR‐
LOPT_RESUME_FROM_LARGE(3) instead.
DEFAULT
0, not used
PROTOCOLS
HTTP, FTP, SFTP, FILE
EXAMPLE
CURL *curl = curl_easy_init();
if(curl) {
curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com");
/* resume upload at byte index 200 */
curl_easy_setopt(curl, CURLOPT_RESUME_FROM, 200L);
/* ask for upload */
curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
/* set total data amount to expect */
curl_easy_setopt(curl, CURLOPT_INFILESIZE, size_of_file);
/* Perform the request */
curl_easy_perform(curl);
}
AVAILABILITY
Always
RETURN VALUE
Returns CURLE_OK
SEE ALSOCURLOPT_RESUME_FROM_LARGE(3), CURLOPT_RANGE(3), CURLOPT_INFILESIZE(3),
libcurl 7.37.0 17 Jun 2014 CURLOPT_RESUME_FROM(3)
