---

Simple FTP Server and Client

Project Members

Anthony Grippi - agrippi@csu.fullerton.edu
Ethan Jones - ejonest@csu.fullerton.edu
David Nguyen - dnguyen271@csu.fullerton.edu

Overview

This project provides a simple FTP server and client implementation in Python. It also includes a Windows batch script for easy execution of the programs.

Contents

1. ftp-server-simple.py: A Python script for the FTP server. It uses socket programming to listen for client connections and handles commands like 'LS' (to list server directory files) and 'GET' (to send files to the client).
2. ftp-client-simple.py: A Python script for the FTP client. It connects to the FTP server and sends commands. It supports receiving files from the server with the 'GET' command.
3. run-simple.bat: A Windows batch script that starts both the server and client scripts in separate command prompt windows.

Requirements

• Python 3.x installed on your machine.
• A Windows environment to execute the batch script.

Usage

Running the Batch Script:

• Double-click on run-simple.bat.
• The script opens two command prompt windows: one for the server and another for the client.
• The server starts first, followed by the client. You may then provide the client with the following commands:
  • PUT
  • GET
  • LS
  • QUIT
    *Note: if you want to change the port number, please go in and alter the number on the port if you are using the batch script Alternatively:
• Open two terminals, each open to the directory that hosts the source code.
• In the first terminal, run the following command: python3 ftp-server-simple.py
• In the second terminal run the following command: python3 ftp-server-client.py
• You may then provide the client with the following commands: - PUT - GET - LS - QUIT

Server Implementation

1. PUT

• The PUT command allows the client to upload a file to the server.
• The server creates a data socket and binds it to a specific port to handle file transfer.
• It accepts a connection from the client on this data socket.
• The server then receives the file name and file size from the client.
• The file data is received in chunks and written to a new file in the server's directory (server-files/).
• This process continues until the entire file is received and saved.

2. GET

• The GET command is not explicitly implemented in the server code snippet provided. However, it is typically used to send a file from the server to the client upon request.

3. LS

• The implementation details for the LS command are not visible in the provided code snippet. Generally, LS is used to list the files available in the server's directory.

4. QUIT

• The QUIT command implementation is not directly visible in the server code. Typically, this command would close the connection with the client.

Client Implementation

1. PUT

• The PUT command functionality is to upload a file from the client to the server.
• The client sends the PUT command along with the file name and size to the server.
• It then reads the file and sends its data in chunks to the server.
• Once the file transfer is complete, the client prints a confirmation message.

2. GET

• The GET command requests a file from the server.
• The client sends the GET command along with the file name to the server.
• It receives the file size and then starts receiving the file data in chunks.
• The received data is written to a file in the client's directory (client-files/).
• On completion, the client prints a success message.

3. LS

• The LS command requests a list of files from the server.
• The server then responds with a full list of all the files in its directory.

4. QUIT

• The QUIT command is used to close the connection with the server.
• On entering QUIT, the client closes the data socket and prints a message indicating that the connection is closed and the program is terminating.