Create a ReportingServices data source and upload to a data connection library

I have installed reporting services 2012 in SharePoint 2013 integrated mode. I need to create a report data source and upload it to a data connection library using C#.

As I know it uses the ReportingServices2010 class but I cannot explore a reporting server url.

There is a ReportingServices2010.asmx file in the 15 hive though.

Also it works fine when I manually set the data source.