I have a server code: import socket   # Define the server address and port server_address = ('localhost', 12345)   # Create a TCP socket server_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)   # Bind the socket to the server address server_sock.bind(server_address)   # Listen for incoming connections server_sock.listen(1)   while True:     print('Waiting for a connection...')     # Accept a client connection     client_sock, client_address = server_sock.accept()     print('Connected to:', client_address)       try:         # Receive data from the client         data = client_sock.recv(1024)                 # Process the received data         processed_data = data.swapcase()           # Send the processed data back to the client         client_sock.sendall(processed_data)     finally:         # Close the client socket         client_sock.close()         print('Connection closed.')         break   # Close the server socket server_sock.close()   And the Client code:   import argparse import socket # Parse the command-line arguments parser = argparse.ArgumentParser(description="This is a very basic client program") parser.add_argument('-f', type=str, help='Source file for the strings to reverse', default='source_strings.txt', action='store', dest='in_file') parser.add_argument('-o', type=str, help='Destination file for the reversed strings', default='results.txt', action='store', dest='out_file') parser.add_argument('server_location', type=str, help='Domain name or IP address of the server', action='store') parser.add_argument('port', type=int, help='Port to connect to the server on', action='store') args = parser.parse_args() # Create a client socket client_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) # Connect to the server server_addr = (args.server_location, args.port) client_sock.connect(server_addr) # Open the source and destination files with open(args.out_file, 'wb') as write_file, open(args.in_file, 'rb') as read_file:     # Read each line from the source file     for line in read_file:         # Send the line to the server         client_sock.sendall(line)                 # Receive the processed line from the server         processed_line = client_sock.recv(512)                 # Write the processed line to the destination file         write_file.write(processed_line) # Close the client socket client_sock.close()   I need the server code to be modified to make sure that the program would give valid results even if both server and client are run on separate machines and also on local or remote socket connections.   NOTE: Right now the server is hard coded to a certain port number and I would like to make it work with different port numbers as long as the connection is established.   Pictures of the code working fine would be appreciated.