curlopt_resume_from(3) mojave man page | unix.com

CURLOPT_RESUME_FROM(3)					     curl_easy_setopt options					    CURLOPT_RESUME_FROM(3)

NAME
       CURLOPT_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 CURLOPT_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 ALSO
       CURLOPT_RESUME_FROM_LARGE(3), CURLOPT_RANGE(3), CURLOPT_INFILESIZE(3),

libcurl 7.54.0							 February 03, 2016					    CURLOPT_RESUME_FROM(3)