I'm trying to make a reliable file transfer service in C using UDP sockets. I already solved the problems related to packets retransmissions, but I can't find a way to make more clients communicate ...

If it uses the UDP protocol to send and receive data, it will use a UDP port. Figure 1, below, is a represenation of an IP address split into its many TCP and UDP ports.

I have this scenario where the MAC address table in my switch ages out MAC addresses of devices that it hasn't heard from after 5 minutes. I could extend this time, but the scenario also requires that ...