On So, 06.09.20 22:23, Francis Moreau (francis.moro@xxxxxxxxx) wrote: > > It's how socket activation works really (at least with Accept=no): pid > > 1 allocate the socket and activates your service every time something > > happens on it, except if your service is already running. Thus a > > service can auto-start, process one or more events on it, can exit > > when idle, or even crash, it doesn't matter, no traffic is lost > > (except the very datagram it was processing or the connection that it > > was handling when it crashed), and as soon as POLLIN is seen on the > > socket again the service is started again can continue where it left > > off. > > > > You are apparently looking for a different model? i.e. where automatic > > restart and exit-on-idle do not exist? A model like that is currently > > not implemented. Can you elaborate on the usecase? > > > > My service is listening several sockets (which are all pased by > systemd) but depending on user configuration my service may not need > to use all sockets and in this case it would be great if the sockets > not needed stop receiving messages and theirs resources are > released. Hmm, I see. > I tried to close the socket but nothing seems to happen. > > Couldn't systemd react on the socket close and if the service still > runs then it closes the socket until it detects the service is stopped > ? "React on the socket close?" — What do you mean by that? Note that on Linux you can invoke shutdown() on a listening socket (i.e. not just on the connection socket, but on a listening socket). iirc in that case systemd actually notices and will put the .socket unit in failure mode... Would that work for you? (Maybe we could even tweak this a bit in systemd, so that when you invoke shutdown() on the socket systemd holds for you we do not consider that a failure anymore, but a clean way to tell systemd to stop the socket). Lennart -- Lennart Poettering, Berlin _______________________________________________ systemd-devel mailing list systemd-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/systemd-devel