Counting sent and received GPRS bytes

Hello.

Does anyone have any idea on how to do this when using WIP to manage the GPRS session ?

I managed to count received bytes by making a slave subscription to the GPRS flow and then adding bytes anytime the Handler receives a rx notification. But I can’t do this with sent bytes as my slave handler does not get notified of sending operations done by the master subscriber (WIP).

regards.