@seiichiro0185, I looked into it and probably, that's a proper way to do it. Such socket activation would need a bit of code, but, at least on the paper, it doesn't seem to be anything excessive. I might be able to work around shared port by using start/stop - this would need some testing though. I am finishing up the things that I started on client side and would look into daemon mode as soon as I be ready for it (probably would start working on it by the end of this week, if all goes to the plan).