Detecting prematurely closed connection in web.py

Is there a way in Web.py to detect and handle a connection that the user closes while processing a request?

I tried to install a handle handler, but in this case it is not called. It is called only after the request completes successfully:

class handler:
    def __init__(self):
        pass

    def GET(self):
        try:
            while(True):
                pass
        except Exception, e:
            logger.debug(e)

def unload():
    logger.debug('unloaded')

try:
    app = web.application(urls, globals())
    app.add_processor(web.unloadhook(unload))
    application = app.wsgifunc()

except Exception, e:
    logger.debug(e)

      

        
        
        
      

    

I open the application in a browser and when it starts spinning in a while loop, I abort the request, but no exception is thrown.