Connection timeout don't work until got message

[liavAtWork]

example code:

    with Connection(self.broker_url, ssl=self.ssl, heartbeat=self.heartbeat) as conn:
        chan = conn.channel()
        with conn.Consumer(channel=chan, callbacks=[messageHandler]) as self.consumer:
            chan.basic_qos(prefetch_size=0, prefetch_count=self.prefetch_count, a_global=False)
            entry_time = time.time()
            self.logger.info('performing drain_events with drain_events_time_out=60')
            conn.drain_events(timeout=60)
            exit_time = time.time()
            time_in_drain_events = exit_time - entry_time
            self.logger.info('drain_events exited after time_in_drain_events=%s', time_in_drain_events)

got log like:
drain_events exited after time_in_drain_events=225.69921612739563
which is way more than the excepted 60s
checked my messages log and found that the connection doesn't respect the timeout if the connection do not got message