FTP Client in C++ using Winsock

This project implements a simple FTP (File Transfer Protocol) client using Winsock for Windows. The client allows you to connect to an FTP server, log in with a username and password, list directory contents, and close the connection.

Features

• Connects to an FTP server via TCP on port 21
• Sends basic FTP commands (USER, PASS, LIST, QUIT)
• Receives and displays server responses
• Supports listing of directory contents
• Gracefully closes the connection and cleans up Winsock resources

Prerequisites

• Windows operating system
• Microsoft Visual Studio or any C++ IDE that supports Winsock
• Basic understanding of C++ and networking concepts

How to Build

1. Clone the repository or download the source code.
2. Open the project in your preferred IDE (e.g., Microsoft Visual Studio).
3. Make sure you have the ws2_32.lib library linked in your project settings as it is required for Winsock functions.
4. Build the project.

How to Run

1. After building the project, run the executable. The client will:
   • Initialize Winsock.
   • Connect to the FTP server.
   • Log in using the provided credentials.
   • List the contents of the directory.
   • Close the connection.

Example Usage

The program connects to a public FTP server (ftp.dlptest.com) with the username dlpuser and password rNrKYTX9g7z3RgJRmxWuGHbeu:

Client: USER dlpuser
Server: 331 User dlpuser OK. Password required
Client: PASS rNrKYTX9g7z3RgJRmxWuGHbeu
Server: 230 OK. Current restricted directory is /
Client: LIST
Server: drwxr-xr-x   2 ftp      ftp          4096 Mar 18 2021 test-directory
Client: QUIT
Server: 221 Goodbye.