I'm curious if anyone knows of tools like this that are more deterministic? I'm in the process of writing a library at work that is basically implementing the

I'm curious if anyone knows of tools like this that are more deterministic? I'm in the process of writing a library at work that is basically implementing the CoAP protocol from the ground up and having something that I can script to force the same packets to be lost or delayed is something that I would find very useful for testing. I've been using Apple's network link conditioner, but when I do discover a problem, it can take a long time for the same scenario to happen again which makes testing the fix quite difficult. I'm currently trying to think through how I'd write this to make the filters easy to setup [0], but if anyone knows of something that already exists, please let me know. [0] https://github.com/Azdle/dolos https://github.com/Azdle/dolos