Thanks again Peter. I found 2 potential solutions for obtaining the ip address of the incoming connection. The first was to subclass SimpleXMLRPCRequestHandler class and pass it to the SimpleXMLRPCServer constructor. In doing so, I could directly access the client_address via self.client_address. This worked just fine but was a bit overkill.
The other solution I noticed was that SimpleXMLRPCServer's (which ultimately subclasses BaseServer) handle_request method invokes get_request (which merely calls self.socket.accept() -- which returns a tuple including the ip address). By re-implementing get_request() as such: def get_request(self): req = self.socket.accept() ip_address = req[1][0] return req I can grab the ip address for internal use and have the get_request method return the expected data for use by hande_request(). Now I just need to find a thread-safe way of passing this data back to the XMLRPC server's registered_instance. -- http://mail.python.org/mailman/listinfo/python-list