final private function http($url, $data=null, $method='POST', $type=null, $headers=null)
	{
		curl_setopt($this->curl, CURLOPT_FOLLOWLOCATION, true);
		curl_setopt($this->curl, CURLOPT_RETURNTRANSFER, true);
		$hdr = [];
		switch ($type)
		{
			case "application/json":
				$hdr[] = "Content-Type: {$type}; charset=utf-8";
				if (isset($data) && is_array($data)) $data = json_encode($data, JSON_NUMERIC_CHECK | JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES );
				break;
			case "application/x-www-form-urlencoded":
				$hdr[] = "Content-Type: {$type}";
				if (isset($data) && is_array($data)) $data = http_build_query($data);
				break;
			case "multipart/form-data":
				$bound = "---bound-" . str_shuffle('ABCDEFGHIJKLMNOPQRSTUVWXYZ') . "-end";
				$hdr[] = "Content-Type: {$type}; charset=utf-8; boundary={$bound}";
				if (isset($data) && is_array($data))
				{
					$tmp = "";
					foreach ($data as $item=>$value)
					{
						$tmp .= "--{$bound}\r\n";
						$tmp .= "Content-Disposition: form-data; name=\"{$item}\"\r\n\r\n";
						$tmp .= "{$value}\r\n";
					}
					$data = $tmp;
					unset($tmp);
				}
				break;
			case "text/plain":
				$hdr[] = "Content-Type: {$type}; charset=utf-8";
				break;
			case "text/xml":
				$hdr[] = "Content-Type: {$type}; charset=utf-8";
				break;
		}
		if (isset($headers) && is_array($headers) && !empty($headers)) foreach ($headers as $h=>$a) $hdr[] = (is_int($h) ? $a : "$h: $a");
		if (!empty($hdr)) curl_setopt($this->curl, CURLOPT_HTTPHEADER, $hdr);
		switch ($method)
		{
			case "GET":
				curl_setopt($this->curl, CURLOPT_HTTPGET, true);
				if (isset($data)) $url .= '?'.$data;
				break;
			case "POST":
				curl_setopt($this->curl, CURLOPT_POST, true);
				if (isset($data)) curl_setopt($this->curl, CURLOPT_POSTFIELDS, $data);
				break;
		}
		curl_setopt($this->curl, CURLOPT_URL, $url);
print_r(['url'=>$url, 'hdr'=>$hdr, 'method'=>$method, 'data'=>$data]);
		$res = curl_exec($this->curl);
		$ret = curl_getinfo($this->curl);
print_r(['res'=>$res, 'ret'=>$ret]);
		if (empty($res) || ($res===false)) return false;
		if (is_array($ret)) list($code,$mime) = array($ret['http_code'],$ret['content_type']);
		if ($code >= 500) return "#error $code";
		if (!empty($mime)) $mime = trim(explode(';',$mime)[0]);
		switch ($mime)
		{
			case "application/json":
				$data = json_decode($res, true);
				if (json_last_error() != JSON_ERROR_NONE) $data = false;
				break;
			case "text/xml":
				libxml_use_internal_errors(true);
				$data = @simplexml_load_string($res);
				libxml_use_internal_errors(false);
				if (libxml_get_errors()) $data = false;
				break;
			default:
				$data = $res;
			break;
		}
		return $data;
	}

Array
(
     =>  https://api.telegram.org/bot***/setWebhook 
    [hdr] => Array
        (
            [0] => Content-Type: multipart/form-data; charset=utf-8; boundary=---bound-IXFTRGEZNCUYJDPHOBKLVQWAMS-end
        )

    [method] => POST
    [data] => -----bound-IXFTRGEZNCUYJDPHOBKLVQWAMS-end
Content-Disposition: form-data; name="url"

 https://*** 
-----bound-IXFTRGEZNCUYJDPHOBKLVQWAMS-end
Content-Disposition: form-data; name="certificate"

-----BEGIN CERTIFICATE-----
MIIEeDCCA2CgAwIBAgIIFaY4otyIJSswDQYJKoZIhvcNAQELBQAwga8xCzAJBgNV
...
s7LHpJ+AfvA7LnEUYos+lslk9O0T6KSGfwixQC7uRAkQTu4ogvHGtIvUfI8=
-----END CERTIFICATE-----


)
Array
(
    [res] => {"ok":false,"error_code":504,"description":"Gateway Timeout"}
    [ret] => Array
        (
             =>  https://api.telegram.org/bot***/setWebhook 
            [content_type] => application/json
            [http_code] => 504
            [header_size] => 381
            [request_size] => 260
            [filetime] => -1
            [ssl_verify_result] => 0
            [redirect_count] => 0
            [total_time] => 120.14796
            [namelookup_time] => 3.7E-5
            [connect_time] => 3.7E-5
            [pretransfer_time] => 0.000113
            [size_upload] => 1873
            [size_download] => 61
            [speed_download] => 0
            [speed_upload] => 15
            [download_content_length] => 61
            [upload_content_length] => 1873
            [starttransfer_time] => 0.073819
            [redirect_time] => 0
            [certinfo] => Array
                (
                )

            [primary_ip] => ***
            [primary_port] => 443
            [local_ip] => ***
            [local_port] => 34128
            [redirect_url] => 
        )

)