def getServiceRequest(self, request, target):
        """
        Returns a service based on the message.

        @raise UnknownServiceError: Unknown service.
        @param request: The AMF request.
        @type request: L{Request<pyamf.remoting.Request>}
        @rtype: L{ServiceRequest}
        """
        try:
            return self._request_class(
                request.envelope, self.services[target], None)
        except KeyError:
            pass

        try:
            sp = target.split('.')
            name, meth = '.'.join(sp[:-1]), sp[-1]

            return self._request_class(
                request.envelope, self.services[name], meth)
        except (ValueError, KeyError):
            pass

        raise UnknownServiceError("Unknown service %s" % target)
Returns a service based on the message.

        @raise UnknownServiceError: Unknown service.
        @param request: The AMF request.
        @type request: L{Request<pyamf.remoting.Request>}
        @rtype: L{ServiceRequest}