I use gwtupload lib for uploading files on a server. There is a feature: cancel of file uploading. But how should I handle the action on the Java server?
The code related gwtupload shows different server side handling examples for this scenario.
Did you try cancel callback supported in the framework? You can find the examples here -http://code.google.com/p/gwtupload/source/search?q=cancel&origq=cancel&btnG=Search+Trunk