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CURLOPT_RESUME_FROM(3)	   Library Functions Manual	CURLOPT_RESUME_FROM(3)

NAME
       CURLOPT_RESUME_FROM - offset 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 lo-
       cal/source file libcurl should try to resume the	 upload	 from  and  it
       then appends the	source file to the remote target file.

       If  you need to resume a	transfer beyond	the 2GB	limit, use CURLOPT_RE-
       SUME_FROM_LARGE(3) instead.

DEFAULT
       0, not used

PROTOCOLS
       This functionality affects all supported	protocols

EXAMPLE
       int main(void)
       {
	 CURL *curl = curl_easy_init();
	 if(curl) {
	   long	size_of_file = 6789;

	   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
       Added in	curl 7.1

RETURN VALUE
       curl_easy_setopt(3) returns a CURLcode indicating success or error.

       CURLE_OK	(0) means everything was OK, non-zero means an error occurred,
       see libcurl-errors(3).

SEE ALSO
       CURLOPT_INFILESIZE(3), CURLOPT_RANGE(3),	CURLOPT_RESUME_FROM_LARGE(3)

libcurl				  2025-06-03		CURLOPT_RESUME_FROM(3)

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