server_client.py

import socket

PORT = 2222
BUFFER_SIZE = 1024
MAX_CONNECTIONS = 100

def main():
    # Create server socket
    server_fd = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    
    # Set socket options to reuse address
    server_fd.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
    
    # Set up server address
    server_addr = ('0.0.0.0', PORT)
    
    # Bind socket
    try:
        server_fd.bind(server_addr)
    except OSError as e:
        print(f"Bind failed: {e}")
        server_fd.close()
        return
    
    # Listen for connections
    try:
        server_fd.listen(MAX_CONNECTIONS)
    except OSError as e:
        print(f"Listen failed: {e}")
        server_fd.close()
        return
    
    print(f"Server listening on port {PORT}...")
    
    # Lists to store client IPs
    try:
        while True:
            try:
                # Accept client connection
                client_fd, client_addr = server_fd.accept()
                client_ip = client_addr[0]
                client_fd.send(f"{client_ip}\n".encode('utf-8'))
           
            except OSError as e:
                print(f"Receive or send failed for {client_ip}: {e}")
                
                    
    except OSError as e:
        print(f"Accept failed: {e}")
        



if __name__ == "__main__":
    main()