mojave man page for curlopt_infilesize

CURLOPT_INFILESIZE(3)					     curl_easy_setopt options					     CURLOPT_INFILESIZE(3)

NAME
       CURLOPT_INFILESIZE - set size of the input file to send off

SYNOPSIS
       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_INFILESIZE, long filesize);

DESCRIPTION
       When  uploading	a  file  to a remote site, filesize should be used to tell libcurl what the expected size of the input file is. This value
       must be passed as a long. See also CURLOPT_INFILESIZE_LARGE(3) for sending files larger than 2GB.

       For uploading using SCP, this option or CURLOPT_INFILESIZE_LARGE(3) is mandatory.

       To unset this value again, set it to -1.

       When sending emails using SMTP, this command can be used to specify the optional SIZE parameter for the MAIL FROM command.

       This option does not limit how much data libcurl will actually send, as that is controlled entirely by what the read callback returns,  but
       telling one value and sending a different amount may lead to errors.

DEFAULT
       Unset

PROTOCOLS
       Many

EXAMPLE
       CURL *curl = curl_easy_init();
       if(curl) {
	 long uploadsize = FILE_SIZE;

	 curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com/destination.tar.gz");

	 curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);

	 curl_easy_setopt(curl, CURLOPT_INFILESIZE, uploadsize);

	 curl_easy_perform(curl);
       }

AVAILABILITY
       SMTP support added in 7.23.0

RETURN VALUE
       Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

SEE ALSO
       CURLOPT_INFILESIZE_LARGE(3), CURLOPT_UPLOAD(3),

libcurl 7.54.0							 February 03, 2016					     CURLOPT_INFILESIZE(3)