1CURLOPT_UPLOAD(3) curl_easy_setopt options CURLOPT_UPLOAD(3)
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6 CURLOPT_UPLOAD - enable data upload
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9 #include <curl/curl.h>
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11 CURLcode curl_easy_setopt(CURL *handle, CURLOPT_UPLOAD, long upload);
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14 The long parameter upload set to 1 tells the library to prepare for and
15 perform an upload. The CURLOPT_READDATA(3) and CURLOPT_INFILESIZE(3) or
16 CURLOPT_INFILESIZE_LARGE(3) options are also interesting for uploads.
17 If the protocol is HTTP, uploading means using the PUT request unless
18 you tell libcurl otherwise.
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20 Using PUT with HTTP 1.1 implies the use of a "Expect: 100-continue"
21 header. You can disable this header with CURLOPT_HTTPHEADER(3) as
22 usual.
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24 If you use PUT to an HTTP 1.1 server, you can upload data without know‐
25 ing the size before starting the transfer if you use chunked encoding.
26 You enable this by adding a header like "Transfer-Encoding: chunked"
27 with CURLOPT_HTTPHEADER(3). With HTTP 1.0 or without chunked transfer,
28 you must specify the size.
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31 0, default is download
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34 Most
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37 CURL *curl = curl_easy_init();
38 if(curl) {
39 /* we want to use our own read function */
40 curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_callback);
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42 /* enable uploading */
43 curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
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45 /* specify target */
46 curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com/dir/to/newfile");
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48 /* now specify which pointer to pass to our callback */
49 curl_easy_setopt(curl, CURLOPT_READDATA, hd_src);
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51 /* Set the size of the file to upload */
52 curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE, (curl_off_t)fsize);
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54 /* Now run off and do what you've been told! */
55 curl_easy_perform(curl);
56 }
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59 Always
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62 Returns CURLE_OK
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65 CURLOPT_PUT(3), CURLOPT_READFUNCTION(3), CURLOPT_INFILESIZE_LARGE(3),
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69libcurl 7.66.0 April 17, 2018 CURLOPT_UPLOAD(3)