Comment by 99harry
2 hours ago
Sometimes I have scripts that automatically assign ports starting from 30000. How would that work? Would I have to bind to port 0 multiple times until I randomly get a port in that range?
2 hours ago
Sometimes I have scripts that automatically assign ports starting from 30000. How would that work? Would I have to bind to port 0 multiple times until I randomly get a port in that range?
I'm not quite sure what a script assigning ports actually does, but if I need an app to bind a port in some port range, I just start binding ports starting from 30000 until it succeeds.
If it's in a script then that might be difficult, but a racy approximation could be to loop e.g. listening socat with different ports for finding the free port. (Or maybe: parse output of ss.) But if the port use is separate from the port binding, then it might still be busy once the time to rebind it comes.
I’m not exactly sure if that’s the question, but the range can be set. Here’s the Linux solution: https://tldp.org/LDP/solrhe/Securing-Optimizing-Linux-RH-Edi... FreeBSD has net.inet.ip.portrange
That might not quite fit my use case. My AI-generated scripts probably won't modify system-level configuration files to change the port range
... do you not have a say in the matter?