1CURLOPT_RESUME_FROM(3) curl_easy_setopt options CURLOPT_RESUME_FROM(3)
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6 CURLOPT_RESUME_FROM - set a point 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, long
12 from);
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15 Pass a long as parameter. It contains the offset in number of bytes
16 that you want the transfer to start from. Set this option to 0 to make
17 the transfer start from the beginning (effectively disabling resume).
18 For FTP, set this option to -1 to make the transfer start from the end
19 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
22 local/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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25 If you need to resume a transfer beyond the 2GB limit, use CUR‐
26 LOPT_RESUME_FROM_LARGE(3) instead.
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29 0, not used
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32 HTTP, FTP, SFTP, FILE
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35 CURL *curl = curl_easy_init();
36 if(curl) {
37 curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com");
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39 /* resume upload at byte index 200 */
40 curl_easy_setopt(curl, CURLOPT_RESUME_FROM, 200L);
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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, size_of_file);
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48 /* Perform the request */
49 curl_easy_perform(curl);
50 }
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53 Always
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56 Returns CURLE_OK
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59 CURLOPT_RESUME_FROM_LARGE(3), CURLOPT_RANGE(3), CURLOPT_INFILESIZE(3),
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63libcurl 7.64.0 February 03, 2016 CURLOPT_RESUME_FROM(3)