I want to develop an application which will transfer data from one application to another application. Now the kick here is that one of my application is in .Net framework (Standalone) while the other is implemented in Spring framework 2.5 (web based). Data will move from .Net application to Spring framework application

Which programming technique would best suit this sort of environment?

And Yes ! data will be quite heavy, it will include BLOBs. Moreover, there are chances of network break during transfer, therefore, it has to be something like transactions; as i certainly don't want to loose data.

What do you think about XML over http?

Please suggest what sort of reliable application should i be implementing to transfer data.