DirectAdmin login attempt

/*
LIVE HTTP HEADER of LOGIN DirectAdmin

http://213.000.000.000:2222/CMD_LOGIN

POST /CMD_LOGIN HTTP/1.1
Host: 213.000.000.000:2222
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; nl; rv:1.9.2.13) Gecko/20101203 Firefox/3.6.13
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: nl,en-us;q=0.7,en;q=0.3
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
Referer: http://213.000.000.000:2222/CMD_LOGIN
Cookie: session=
Content-Type: application/x-www-form-urlencoded
Content-Length: 56
referer=%2FCMD_LOGIN&username=XXXXXX&password=XXXXXX
HTTP/1.1 302 Found
Server: DirectAdmin Daemon v1.37.0 Registered to XXXXXXXX.nl
Set-Cookie: session=XXXXXXXXXXXXXXXXXXXXXX; path=/; HttpOnly
Location: http://213.000.000.000:2222/
Content-Type: text/html
----------------------------------------------------------
http://213.000.000.000:2222/

GET / HTTP/1.1
Host: 213.000.000.000:2222
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; nl; rv:1.9.2.13) Gecko/20101203 Firefox/3.6.13
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: nl,en-us;q=0.7,en;q=0.3
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
Referer: http://213.000.000.000:2222/CMD_LOGIN
Cookie: session=XXXXXXXXXXX

HTTP/1.1 200 OK
Server: DirectAdmin Daemon v1.37.0 Registered to XXXXXXXX.nl
Connection: close
Cache-Control: no-cache
Pragma: no-cache
Content-Type: text/html
*/

$ch = curl_init();
$ckfile = tempnam ("/tmp", "CURLCOOKIE");
curl_setopt($ch,CURLOPT_COOKIEJAR, $ckfile);
curl_setopt($ch,CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch,CURLOPT_URL,$url);
curl_setopt($ch,CURLOPT_POST,count($fields));
curl_setopt($ch,CURLOPT_POSTFIELDS,$fields_string);
$void = curl_exec($ch);
// get file
if($void!==false) {
    $ch = curl_init();
    curl_setopt($ch,CURLOPT_URL,$url);
    curl_setopt($ch,CURLOPT_COOKIEFILE, $ckfile);
    curl_setopt($ch,CURLOPT_RETURNTRANSFER, true);
    $result = curl_exec($ch);
    if($result===false) {
        echo 'CURL ERROR: '.curl_error($ch);
    }
} else {
    echo 'CURL ERROR: '.curl_error($ch);
}
curl_close($ch);