cURL Error: couldn't connect to host

if (isset($_GET['code'])) {
        
        $url = "https://graph.facebook.com/oauth/access_token?client_id=".CLIENT_ID."&redirect_uri=".REDIRECTURI."&client_secret=".SECRET."&code=".$_GET['code'];
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_HEADER, 0);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        $result = curl_exec($ch);
        curl_close($ch);
        if ($result === FALSE) {
            echo "cURL Error: " . curl_error($ch);
        }
    }

echo "<iframe src='".$url."'></iframe>";

curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);

$crtPath = '/path/to/VeriSignClass3PublicPrimaryCertificationAuthority-G5.crt';
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt($ch, CURLOPT_CAINFO, $crtPath);

$url = 'https://graph.facebook.com/oauth/access_token';
        $url_header = "https://graph.facebook.com/oauth/access_token?client_id=".CLIENT_ID."&redirect_uri=".urlencode(REDIRECTURI)."&client_secret=".SECRET."&code=".$_GET['code']." HTTP/1.1"; 
        echo $url_header;
        $post_data = array (
            "client_id" => CLIENT_ID,
            "client_secret" => SECRET,
            "code" => $_GET['code'],
            "redirect_uri" => REDIRECTURI
            );
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
        curl_setopt($ch, CURLOPT_HEADER, true);
        $headers = array();
        $headers[] = 'GET '.$url_header;
        $headers[] = 'Accept: image/gif, image/jpeg, image/pjpeg, image/pjpeg, application/x-shockwave-flash, application/x-ms-application, application/x-ms-xbap, application/vnd.ms-xpsdocument, application/xaml+xml, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*';
        $headers[] = 'Accept-Language: ru';
        $headers[] = 'User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0)';
        $headers[] = 'Accept-Encoding: gzip, deflate';
        $headers[] = 'Connection: Keep-Alive';
        $headers[] = 'Host: faceook.com';
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
        curl_setopt($ch, CURLOPT_COOKIEFILE, "cookie.txt");
        curl_setopt($ch, CURLOPT_COOKIEJAR, "cookie.txt");
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 1);
        curl_setopt($ch, CURLOPT_SSLCERT, 'VeriSignClass3PublicPrimaryCertificationAuthority-G5.pem');
        curl_setopt($ch, CURLOPT_USERAGENT, 'Opera/9.80 (Windows NT 5.1; U; ru) Presto/2.9.168 Version/11.51');
        curl_setopt($ch, CURLOPT_REFERER, 'http://fallart.zz.mu/fb_login.php');
        curl_setopt($ch, CURLOPT_PROXY, '27.50.11.164:80');
        $result = curl_exec($ch);
        if ($result === FALSE) {
            echo "cURL Error: " . curl_error($ch);
        }
        curl_close($ch);

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
$result = curl_exec($ch);
curl_close($ch);