Problems with Geometry Service

BetsySchenck-Gardner

I'm trying to add the ability to measure distances between two points on a map.  I'm using the following sample as a starting point:
  http://help.arcgis.com/en/webapi/javascript/arcgis/jssamples/#sample/util_distance
The lines are drawn every time I add a point but I get no distance calculations.  I'm using a geometry service published from our own arcgis server but I'm not using a proxy page because I don't think I need one.  When I look up what is happening through the web console, every time I try to get the distance calculated the following error/warning is showing:
  esri.config.defaults.io.proxyURL is not set
What I don't understand is if I'm not using a proxy page in the first place, why should I have to set one?  Am I not getting something here?  I would prefer not to have to use a proxy page because I don't think I'm exceeding the limits to start with but it acts as if you have to have a proxy page with a geometry service whether you want one or not.  Has anyone ever gotten the geometry service to work without a proxy page in place?  Thanks for any assistance.

JianHuang

Yes, the thumb of rule is as long as there are any cross domain requests going on, you need a proxy page.

I'm using version 10.03 as far as ArcServer goes. As far as domains go, they are not sitting on the same domain.  I'm running the geometry service from a production server while I am doing my web application on a development server so the domains are not the same. Does that mean I need to have proxy involved?