TCP Client-Server Communication (Message & File Transfer)
This program demonstrates TCP socket communication between a client and server to:

Files Required

server.py - TCP Server (receives messages/files)
client.py - TCP Client (sends messages/files)

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server.py:

import socket
import os

server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server.bind(("0.0.0.0", 8080))
server.listen(1)
print("Server Started")

os.makedirs("received_files", exist_ok=True)

while True:
    client, addr = server.accept()
    option = client.recv(10).decode().strip()
    
    if option == "MSG":
        message=client.recv(1024).decode()
        print(message)

    elif option == "FILE":
        filename = client.recv(256).decode().strip()

        with open(f"received_files/{filename}", "wb") as f:
            while (data := client.recv(4096)):
                f.write(data)
        print(f"Saved: {filename}\n")
    
    client.close()

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client.py:

import socket
import os

client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client.connect(("127.0.0.1", 8080))  # Change IP for network

choice = input("(1) Message or (2) File? ")

if choice == "1":
    client.send(b"MSG")
    client.send(input("Enter message: ").encode())
    print("Sent!")
    
elif choice == "2":
    client.send(b"FILE")
    filepath = input("Enter file path: ")
    client.send(os.path.basename(filepath).encode())
    
    with open(filepath, "rb") as f:
        while (chunk := f.read(4096)):
            client.send(chunk)
    print("File sent!")

client.close()

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How to Run
Terminal 1 (Start Server):
python server.py
Terminal 2 (Run Client):
python client.py
Then:

Enter 1 to send a message (Hello)
Enter 2 to transfer a file

Note: Change 127.0.0.1 to the actual server IP address in client.py for network communication.