#!/usr/bin/perl -w
use strict;
use warnings;

use WWW::Curl::Easy;

# set custom HTTP request header fields
my $url = "http://mysite.org:8098/api/resultados/";
my $token = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
my $filetype_to_upload="pdf";

my $file_to_upload="/path/to/file.$filetype_to_upload";
my $size = -s $file_to_upload;
open( IN, $file_to_upload ) or die("Cannot open file - $file_to_upload. $! \n");

my $curl = WWW::Curl::Easy->new or die $!;

# Headers.
my @request_header = ();
#push (@request_header, "Accept-Encoding: gzip");
push (@request_header, "Content-type: multipart/form-data; boundary=frontier");
push (@request_header, "Authorization: Token $token");
push (@request_header, "User-Agent: Perl interface for libcURL/7.35.0");

# Options
my $retcode ;
$retcode = $curl->setopt(CURLOPT_POST, 1);
$retcode = $curl->setopt(CURLOPT_VERBOSE,0); 
$retcode = $curl->setopt(CURLOPT_HEADER(), 1);
$retcode = $curl->setopt(CURLOPT_HTTPHEADER, \@request_header);
$retcode = $curl->setopt(CURLOPT_URL(), $url);
$retcode = $curl->setopt(CURLOPT_NOPROGRESS, 0);
$retcode = $curl->setopt(CURLOPT_PROGRESSFUNCTION, \&progress_callback);
$retcode = $curl->setopt( CURLOPT_INFILESIZE,    $size );
$retcode = $curl->setopt( CURLOPT_UPLOAD,        1 );
$retcode = $curl->setopt( CURLOPT_CUSTOMREQUEST, 'POST' );
$retcode = $curl->setopt(CURLOPT_TIMEOUT, 30);
$curl->setopt(CURLOPT_READDATA, \*IN);
$curl->setopt( CURLOPT_POSTFIELDSIZE_LARGE, -1 );

$retcode = $curl->perform;

if ($retcode == 0) {
    print("File upload success\n");
} else {
    print("An error happened: $retcode ".$curl->strerror($retcode)."\n");
}
exit;

sub progress_callback {
    my ($clientp,$dltotal,$dlnow,$ultotal,$ulnow)=@_;
    if ($ultotal) {
        print int (100 * $ulnow/$ultotal), "% Complete.\n";
    } else {
        print "0% Complete.\n";
    }
    return 0;
}