Bridge does not know XML or XMLHTTPRequest.
If you are trying to use the web browsing capabilities, you can use callbacks to Bridge's ExtendScript engine.
If you wrote an HTTP object using Bridge's Socket object, you could do it. You would also have to write an XML parser of sorts.
And it can all be set up to run as background processes, although the process isn't trivial, especially with the Socket object. But it can be done.
I do have an XML parser and an HTTP object, although the HTTP object is not written to run in the background. I also have some sample code of how to make the socket work as a background process.
If you want to take it on, email me. rstucky@starband.net
Regards,
Bob