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CURLOPT_RESUME_FROM(3)              libcurl             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
       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),

ibcurl 8.1.2                    April 26, 2023          CURLOPT_RESUME_FROM(3)

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