Attached is the python file server.py. There are errors in these codes, so make sure to show screenshots of the fixed code of the python file along with the screenshot of the output as well. ## Python Socket Programming ExampleThis Python script illustrates a basic server-side socket programming setup. The script is designed to handle client connections and implement simple command-based interactions between a server and client.### Code Explanation1. **Imports:** ```python import socket import sys ```2. **Handling Client Connections:** - `handle_client(client_socket)` function manages incoming client commands. - Commands: `put`, `get`, and `quit` are expected from the client. - Invalid commands are notified with an "Invalid command" message.3. **File Transfer Functions (Placeholders):** - `receive_file(client_socket)`: Intended to implement logic for receiving files from the client. - `send_file(client_socket)`: Intended to implement logic for sending files to the client.4. **Main Function:** ```python def main(): if len(sys.argv) != 3: print("Usage: server.py ") return ``` - Checks if the correct number of command-line arguments are supplied. - Extracts the `port` and `transport_protocol` from command line arguments. - Server socket is set up using IPv4 and TCP protocols. - Listens for incoming connections.5. **Server Loop:** - Continuously accepts new connections and assigns them to `handle_client`.6. **Execution:** ```python if __name__ == "__main__": main() ```### Error Details- **ValueError:** - Raised due to an invalid string conversion to an integer. - Error message indicates the issue: ``` ValueError: invalid literal for int() with base 10: '-f' ``` - Occurred due to incorrect input format; ensure valid integer values for port and transport protocol.### Instructions for Proper Usage1. **Run the Script:** - Ensure command-line arguments are correctly formatted: `server.py `. - Use valid integers for the `` and ``. 2. **Debugging Steps:** - Verify command-line inputs to prevent `ValueError`. - Implement the logic in `receive_file` and `send_file` for complete functionality.### SummaryThis example sets up a basic structure for server socket programming in Python. It waits for predefined commands

Answered: Attached is the python file server.py.…

Database System Concepts

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ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

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Attached is the python file server.py. There are errors in these codes, so make sure to show screenshots of the fixed code of the python file along with the screenshot of the output as well.

## Python Socket Programming Example

This Python script illustrates a basic server-side socket programming setup. The script is designed to handle client connections and implement simple command-based interactions between a server and client.

### Code Explanation

1. **Imports:**
```python
import socket
import sys
```

2. **Handling Client Connections:**
- `handle_client(client_socket)` function manages incoming client commands.
- Commands: `put`, `get`, and `quit` are expected from the client.
- Invalid commands are notified with an "Invalid command" message.

3. **File Transfer Functions (Placeholders):**
- `receive_file(client_socket)`: Intended to implement logic for receiving files from the client.
- `send_file(client_socket)`: Intended to implement logic for sending files to the client.

4. **Main Function:**
```python
def main():
if len(sys.argv) != 3:
print("Usage: server.py <port> <transport_protocol>")
return
```
- Checks if the correct number of command-line arguments are supplied.
- Extracts the `port` and `transport_protocol` from command line arguments.
- Server socket is set up using IPv4 and TCP protocols.
- Listens for incoming connections.

5. **Server Loop:**
- Continuously accepts new connections and assigns them to `handle_client`.

6. **Execution:**
```python
if __name__ == "__main__":
main()
```

### Error Details

- **ValueError:**
- Raised due to an invalid string conversion to an integer.
- Error message indicates the issue:
```
ValueError: invalid literal for int() with base 10: '-f'
```
- Occurred due to incorrect input format; ensure valid integer values for port and transport protocol.

### Instructions for Proper Usage

1. **Run the Script:**
- Ensure command-line arguments are correctly formatted: `server.py <port> <transport_protocol>`.
- Use valid integers for the `<port>` and `<transport_protocol>`.

2. **Debugging Steps:**
- Verify command-line inputs to prevent `ValueError`.
- Implement the logic in `receive_file` and `send_file` for complete functionality.

### Summary

This example sets up a basic structure for server socket programming in Python. It waits for predefined commands

Expert Solution

Step 1: Providing Introduction

For the offered Python code to function as intended, it looks to have a number of problems and defects that need to be resolved. It appears that a server-side script manages file transfer client connections. To make it work, we'll need to fix these problems.

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Follow-up Question

I ran the code and still got the same error. Please fix the error in the python file and show screenshots of the fixed code of the python file along with the screenshot of the output as well.

import socket
import sys
def handle_client (client_socket):
while True:
command = client_socket.recv(1824).decode() # Fixed the buffer size and added missing colon
if not command:
break
if command == 'quit': # Fixed the comparison operator
break
elif command == 'put': #Fixed the comparison operator
receive_file(client_socket)
elif command == 'get': #Fixed the comparison operator
send_file(client_socket)
else:
if
client_socket.close()
def receive_file(client_socket):
#Implement file receiving Logic from the client.
pass
def send_file(client_socket):
# Implement file sending Logic to the client.
pass
def main():
print("Invalid command.")
break
if len(sys.argv) != 3:
print("Usage: server.py <port> <transport_protocol>") # Added missing angle brackets
return
port, transport_protocol = int(sys.argv[1]), sys.argv[2]
server_socket = socket.socket (socket.AF_INET, socket.SOCK_STREAM)
server socket.bind((¹0.0.0.0, port))
server_socket.listen(5)
print (f"Server listening on port (port}...") # Fixed the string formatting
while True:
name
main()
client_socket, addr = server_socket.accept()
print (F"Accepted connection From [addr[0]}: {addr[1]}") # Fixed the string formatting
handle_client (client_socket)
__main__": # Fixed the if statement
ValueError
30
31
---> 32
Traceback (most recent call last)
-\AppData\Local\Temp/ipykernel_25236/122814978.py in <module>
41
42 if __name__ == "__main__": #Fixed the if statement
---> 43
main()
~\AppData\Local\Temp/ipykernel_25236/122814978.py in main()
print("Usage: server.py <port> <transport_protocol>") # Added missing angle brackets
return
port, transport_protocol = int(sys.argv[1]), sys.argv[2]
33 server_socket = socket.socket (socket.AF_INET, socket.SOCK_STREAM)
34 server_socket.bind(("0.0.0.0", port))
ValueError: invalid literal for int() with base 10: '-'

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