CURLOPT_RESUME_FROM_LARGE - set a point to resume transfer from
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_RESUME_FROM_LARGE,
Pass a curl_off_t 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.
HTTP, FTP, SFTP, FILE
CURL *curl = curl_easy_init();
curl_off_t resume_position = GET_IT_SOMEHOW;
curl_off_t file_size = GET_IT_SOMEHOW_AS_WELL;
curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com");
/* resuming upload at this position, possibly beyond 2GB */
curl_easy_setopt(curl, CURLOPT_RESUME_FROM_LARGE, resume_position);
/* ask for upload */
curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
/* set total data amount to expect */
curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE, file_size);
/* Perform the request */
Added in 7.11.0
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.