public static function receive($payload,$crypt=null){
		$stream = self::_get();
		if(!is_object($crypt))
			$stream->setCrypt(Crypt::_get(Config::get('xport','crypt.key'),Config::get('xport','crypt.iv')));
		else
			$stream->setCrypt($crypt);
		$stream->setup($payload);
		return $stream;
	}