Basic Signal handling example

To run this example, follow these steps:

1. Start the server in one terminal: python server.py

2. Get the server's process ID (PID). The server process will print the PID when launched

3. Start the client in another terminal: python client.py <server_pid> where <server_pid> is the PID of the server process.

The client can send SIGUSR1 or SIGUSR2 signals to the server, and the server will respond accordingly. Please note that this is a basic example, and in a real-world scenario, you would likely implement more robust error handling and message passing logic.

The signal handlers have logic to add information to a global array depending on what signal is received.