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 local/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_RESUME_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;

           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

       Returns CURLE_OK

SEE ALSO

       CURLOPT_INFILESIZE(3), CURLOPT_RANGE(3), CURLOPT_RESUME_FROM_LARGE(3)