Interesting! One thing that I don't understand (which might be a little off-topic): If it's an RPC call, shouldn't there be a response for each RPC request to a

Interesting! One thing that I don't understand (which might be a little off-topic): If it's an RPC call, shouldn't there be a response for each RPC request to ack that the RPC request is well processed by the application layer? Otherwise how do you make sure the application layer won't screw up? How do you notify the client that the request is not invalid?