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        !            23: .TH CURLOPT_INFILESIZE_LARGE 3 "March 23, 2020" "libcurl 7.70.0" "curl_easy_setopt options"
        !            24: 
        !            25: .SH NAME
        !            26: CURLOPT_INFILESIZE_LARGE \- set size of the input file to send off
        !            27: .SH SYNOPSIS
        !            28: .nf
        !            29: #include <curl/curl.h>
        !            30: 
        !            31: CURLcode curl_easy_setopt(CURL *handle, CURLOPT_INFILESIZE_LARGE,
        !            32:                           curl_off_t filesize);
        !            33: .SH DESCRIPTION
        !            34: When uploading a file to a remote site, \fIfilesize\fP should be used to tell
        !            35: libcurl what the expected size of the input file is. This value must be passed
        !            36: as a \fBcurl_off_t\fP.
        !            37: 
        !            38: For uploading using SCP, this option or \fICURLOPT_INFILESIZE(3)\fP is
        !            39: mandatory.
        !            40: 
        !            41: To unset this value again, set it to -1.
        !            42: 
        !            43: When sending emails using SMTP, this command can be used to specify the
        !            44: optional SIZE parameter for the MAIL FROM command.
        !            45: 
        !            46: This option does not limit how much data libcurl will actually send, as that
        !            47: is controlled entirely by what the read callback returns, but telling one
        !            48: value and sending a different amount may lead to errors.
        !            49: .SH DEFAULT
        !            50: Unset
        !            51: .SH PROTOCOLS
        !            52: Many
        !            53: .SH EXAMPLE
        !            54: .nf
        !            55: CURL *curl = curl_easy_init();
        !            56: if(curl) {
        !            57:   curl_off_t uploadsize = FILE_SIZE;
        !            58: 
        !            59:   curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com/destination.tar.gz");
        !            60: 
        !            61:   curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
        !            62: 
        !            63:   curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE, uploadsize);
        !            64: 
        !            65:   curl_easy_perform(curl);
        !            66: }
        !            67: .fi
        !            68: .SH AVAILABILITY
        !            69: SMTP support added in 7.23.0
        !            70: .SH RETURN VALUE
        !            71: Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
        !            72: .SH "SEE ALSO"
        !            73: .BR CURLOPT_INFILESIZE "(3), " CURLOPT_UPLOAD "(3), "