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
       _RESUME_FROM_LARGE&section=3">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 7.77.0                 November 4, 2020         CURLOPT_RESUME_FROM(3)