Feature request - Add additional option for maximum keepalive time.
So the system don't get hogged in an environment where worker IP's change often.

I had situation where after couple days my system refused more new connections to proxy even with ulimit set to unlimited, after restarting proxy alone it started accepting new connections.
Probably due to xmrig-proxy eating all the memory to handle old connections.

Would be nice to have option for maximum keepalive, so we could set it to couple hours instead of restarting xmrig-proxy with a script.

System: Ubuntu 18.04
Proxy Version: 5.10.1