CURLOPT_UPLOAD(3)          curl_easy_setopt options          CURLOPT_UPLOAD(3)

NAME
       CURLOPT_UPLOAD - enable data upload

SYNOPSIS
       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_UPLOAD, long upload);

DESCRIPTION
       The long parameter upload set to 1 tells the library to prepare for and
       perform an upload. The CURLOPT_READDATA(3) and CURLOPT_INFILESIZE(3) or
       CURLOPT_INFILESIZE_LARGE(3)  options  are also interesting for uploads.
       If the protocol is HTTP, uploading means using the PUT  request  unless
       you tell libcurl otherwise.

       Using  PUT  with  HTTP  1.1 implies the use of a "Expect: 100-continue"
       header.  You can disable  this  header  with  CURLOPT_HTTPHEADER(3)  as
       usual.

       If  you use PUT to a HTTP 1.1 server, you can upload data without know-
       ing the size before starting the transfer if you use chunked  encoding.
       You  enable  this  by adding a header like "Transfer-Encoding: chunked"
       with CURLOPT_HTTPHEADER(3). With HTTP 1.0 or without chunked  transfer,
       you must specify the size.

DEFAULT
       0, default is download

PROTOCOLS
       Most

EXAMPLE
       CURL *curl = curl_easy_init();
       if(curl) {
         /* we want to use our own read function */
         curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_callback);

         /* enable uploading */
         curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);

         /* specify target */
         curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com/dir/to/newfile");

         /* now specify which pointer to pass to our callback */
         curl_easy_setopt(curl, CURLOPT_READDATA, hd_src);

         /* Set the size of the file to upload */
         curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE, (curl_off_t)fsize);

         /* Now run off and do what you've been told! */
         curl_easy_perform(curl);
       }

AVAILABILITY
       Always

RETURN VALUE
       Returns CURLE_OK

SEE ALSO
       CURLOPT_PUT(3), CURLOPT_READFUNCTION(3), CURLOPT_INFILESIZE_LARGE(3),

libcurl 7.54.0                 February 03, 2016             CURLOPT_UPLOAD(3)