Trying to make the best use of my jetlag I was playing around and made:
As the README says:
Just like rostopic echo /your_topic but with services.
You need to run it as root from a machine that is either doing the service calls or exposing the server. That’s because it internally uses scapy to sniff network packets.
It looks something like:
rosrun rosservice_echo rosservice_echo.py /rosout/get_loggers
Maybe someone else is interested. It may be a baby step in order to have rosservice bag tool someday. Or just a fun toy project to discover scapy.