Hello there, I'm facing a challenge at the moment where I need to somehow extend the brokers so I can make decisions on the messages (whether they should be discarded or not) on the server side. I've read the documentation but I haven't seen a way of doing this so I'm starting to look into the code.
I wonder if anyone can shed some light here as I don't know where to look. Any pointers would be really appreciated - either source code or something else. Best regards, Daniel
