protected function add($method, $url, $callback, array $headers = null, array $data = null)
{
static $id = 0;
++$id;
$info = new UrlInfo($url);
$ip = Helper::host2ip($info->getHost());
$parser = new Parser();
if ('http' === $info->getScheme()) {
$stream = new TCP($id, $ip, $info->getPort(), $parser);
} elseif ('https' === $info->getScheme()) {
$stream = new SSL($id, $info->getHost(), $ip, $info->getPort(), $parser, $this->connTimeout, $this->verifyCert);
} else {
throw new Exception('Unsupported url');
}
$stream->addRequest(new Request($method, $info, $headers, $data), $callback);
$this->event->onWrite($stream->getResource(), array($this, 'sendCallback'), $stream, $this->connTimeout);
return $id;
}
