CURLOPT_UPLOAD(3)

1CURLOPT_UPLOAD(3)                   libcurl                  CURLOPT_UPLOAD(3)
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NAME

6       CURLOPT_UPLOAD - data upload
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SYNOPSIS

9       #include <curl/curl.h>
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11       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_UPLOAD, long upload);
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DESCRIPTION

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. The library enables this  by
26       adding  a  header "Transfer-Encoding: chunked". With HTTP 1.0 or if you
27       prefer not to use chunked transfer, you must specify the  size  of  the
28       data with CURLOPT_INFILESIZE(3) or CURLOPT_INFILESIZE_LARGE(3).
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DEFAULT

31       0, default is download
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PROTOCOLS

34       Most
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EXAMPLE

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);
44
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 have been told! */
55         curl_easy_perform(curl);
56       }
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AVAILABILITY

59       Always
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RETURN VALUE

62       Returns CURLE_OK
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