ftp_base::connect

	function connect($server=NULL) {
		if(!empty($server)) {
			if(!$this->SetServer($server)) return false;
		}
		if($this->_ready) return true;
	    $this->SendMsg('Local OS : '.$this->OS_FullName[$this->OS_local]);
		if(!($this->_ftp_control_sock = $this->_connect($this->_host, $this->_port))) {
			$this->SendMSG("Error : Cannot connect to remote host \"".$this->_fullhost." :".$this->_port."\"");
			return FALSE;
		}
		$this->SendMSG("Connected to remote host \"".$this->_fullhost.":".$this->_port."\". Waiting for greeting.");
		do {
			if(!$this->_readmsg()) return FALSE;
			if(!$this->_checkCode()) return FALSE;
			$this->_lastaction=time();
		} while($this->_code<200);
		$this->_ready=true;
		$syst=$this->systype();
		if(!$syst) $this->SendMSG("Can't detect remote OS");
		else {
			if(preg_match("/win|dos|novell/i", $syst[0])) $this->OS_remote=FTP_OS_Windows;
			elseif(preg_match("/os/i", $syst[0])) $this->OS_remote=FTP_OS_Mac;
			elseif(preg_match("/(li|u)nix/i", $syst[0])) $this->OS_remote=FTP_OS_Unix;
			else $this->OS_remote=FTP_OS_Mac;
			$this->SendMSG("Remote OS: ".$this->OS_FullName[$this->OS_remote]);
		}
		if(!$this->features()) $this->SendMSG("Can't get features list. All supported - disabled");
		else $this->SendMSG("Supported features: ".implode(", ", array_keys($this->_features)));
		return TRUE;
	}