dns - Typo3 Extbase: get domain in CommandController -

i'm trying access base url of site inside command action this:

namespace vendor\txtest\command;  class testcommandcontroller extends \typo3\cms\extbase\mvc\controller\commandcontroller {     /**      * logger       *       * @var \typo3\cms\core\log\logmanager      */     protected $logger;      /**      * class constructor      */     public function __construct()     {         $this->logger = \typo3\cms\core\utility\generalutility::makeinstance( 'typo3\\cms\\core\\log\\logmanager' )->getlogger( __class__ );     }      /**      * test command      */     public function testcommand()     {         $homeurl = \typo3\cms\core\utility\generalutility::locationheaderurl( '/' );          $this->logger->info( 'url: ' . $homeurl );          $this->logger->info( "\n\r\n\r" );     }  } 

when run command scheduler backend module, domain looks ok, when runs automatically, result is:

mon, 10 mar 2014 ... component="vendor.txnews.command.testcommandcontroller": url: http:/// 

what correct way domain in context?

php knows domain server-call. if site on specific server, might have several urls pointing server. php not know domain has. request user doing php getting information in $_server-var typo3/extbase can read. assume script running on different servers if want url? can put configuration on server different each server?

one approach store url user-call , read in background-module.