1CURLOPT_RESUME_FROM_LARGE(3)curl_easy_setopt optionsCURLOPT_RESUME_FROM_LARGE(3)
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6 CURLOPT_RESUME_FROM_LARGE - offset to resume transfer from
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9 #include <curl/curl.h>
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11 CURLcode curl_easy_setopt(CURL *handle, CURLOPT_RESUME_FROM_LARGE,
12 curl_off_t from);
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15 Pass a curl_off_t as parameter. It contains the offset in number of
16 bytes that you want the transfer to start from. Set this option to 0 to
17 make the transfer start from the beginning (effectively disabling re‐
18 sume). For FTP, set this option to -1 to make the transfer start from
19 the end of the target file (useful to continue an interrupted upload).
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21 When doing uploads with FTP, the resume position is where in the lo‐
22 cal/source file libcurl should try to resume the upload from and it
23 will then append the source file to the remote target file.
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26 0, not used
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29 HTTP, FTP, SFTP, FILE
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32 CURL *curl = curl_easy_init();
33 if(curl) {
34 curl_off_t resume_position = GET_IT_SOMEHOW;
35 curl_off_t file_size = GET_IT_SOMEHOW_AS_WELL;
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37 curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com");
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39 /* resuming upload at this position, possibly beyond 2GB */
40 curl_easy_setopt(curl, CURLOPT_RESUME_FROM_LARGE, resume_position);
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42 /* ask for upload */
43 curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
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45 /* set total data amount to expect */
46 curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE, file_size);
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48 /* Perform the request */
49 curl_easy_perform(curl);
50 }
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53 Added in 7.11.0
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56 Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION
57 if not.
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60 CURLOPT_RESUME_FROM(3), CURLOPT_RANGE(3), CURLOPT_INFILESIZE_LARGE(3),
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64libcurl 7.82.0 September 08, 2021 CURLOPT_RESUME_FROM_LARGE(3)