TProcessor - additional method to called when connection is broken

I would like to have notification when connection is broken.
For example

class TProcessor:
def process(self, iprot, oprot):
pass
def closed(self, iprot, oprot):
pass

class Processor(Iface, TProcessor):
....
def closed(self, iprot, oprot):
self._handler.closed()

class TThreadedServer():
....
def handle(self, client):
...
try:
while True:
....
except Exception, x:
....

self.processor.closed(iprot, oprot)
....