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23 .TH CURLOPT_UPLOAD 3 "February 03, 2016" "libcurl 7.59.0" "curl_easy_setopt options"
26 CURLOPT_UPLOAD \- enable data upload
28 #include <curl/curl.h>
30 CURLcode curl_easy_setopt(CURL *handle, CURLOPT_UPLOAD, long upload);
32 The long parameter \fIupload\fP set to 1 tells the library to prepare for and
33 perform an upload. The \fICURLOPT_READDATA(3)\fP and
34 \fICURLOPT_INFILESIZE(3)\fP or \fICURLOPT_INFILESIZE_LARGE(3)\fP options are
35 also interesting for uploads. If the protocol is HTTP, uploading means using
36 the PUT request unless you tell libcurl otherwise.
38 Using PUT with HTTP 1.1 implies the use of a "Expect: 100-continue" header.
39 You can disable this header with \fICURLOPT_HTTPHEADER(3)\fP as usual.
41 If you use PUT to a HTTP 1.1 server, you can upload data without knowing the
42 size before starting the transfer if you use chunked encoding. You enable this
43 by adding a header like "Transfer-Encoding: chunked" with
44 \fICURLOPT_HTTPHEADER(3)\fP. With HTTP 1.0 or without chunked transfer, you
45 must specify the size.
47 0, default is download
52 CURL *curl = curl_easy_init();
54 /* we want to use our own read function */
55 curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_callback);
57 /* enable uploading */
58 curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
61 curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com/dir/to/newfile");
63 /* now specify which pointer to pass to our callback */
64 curl_easy_setopt(curl, CURLOPT_READDATA, hd_src);
66 /* Set the size of the file to upload */
67 curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE, (curl_off_t)fsize);
69 /* Now run off and do what you've been told! */
70 curl_easy_perform(curl);
78 .BR CURLOPT_PUT "(3), " CURLOPT_READFUNCTION "(3), "
79 .BR CURLOPT_INFILESIZE_LARGE "(3), "