QUIC File Transfer Protocol

This project implements a file transfer protocol over QUIC, supporting the transfer of text and binary files, such as images. It ensures secure communication using TLS certificates and includes a feature for verifying file integrity through checksums.

Features

• Transfer of text and binary files (e.g., images) over QUIC.
• Secure communication using TLS certificates for encryption.
• File integrity verification using checksums.
• Handles both client and server operations.
• Supports both upload and download of files.

Requirements

• Rust: Ensure Rust is installed on your system.
• OpenSSL: If you wish to generate your own keys and certificates.

Generating Your Own Certificates

The certs folder already contains keys and certificates for both client and server generated by me. If you wish to create your own, follow the instructions below.

1. Ensure OpenSSL is installed on your system.

2. Run the certgen.sh shell script:

   # Run the certificate generation script
   ./certgen.sh

3. Make changes in the certificate.conf file if needed.

Usage

1. Build the project (optional, as running the cargo run command directly will also build the project before executing):

   cargo build

2. Start the server:

   cargo run -- server --cert ./certs/server.crt --key ./certs/server.key

3. Run the client:

   cargo run --bin quicrs -- client --address 127.0.0.1 --port 54321 --cert ./certs/ca.cert

Make sure to run these commands in the root folder where the Cargo.toml file is located.

The client will prompt for a filename. The file should be present in the root folder.

How It Works

1. Client Initialization: The client is started and connects to the server using the provided address and port. It then establishes a secure connection using TLS certificates.
2. File Selection: The user is prompted to enter the filename to upload. The file should be present in the root folder.
3. PDU Creation: The client creates a Protocol Data Unit (PDU) that includes the filename and checksum of the file.
4. File Transfer: The client sends the PDU and file content to the server. The server receives the PDU and file content, verifies the checksum, and saves the file to disk.
5. File Download: The server sends the file back to the client. The client receives the file and saves it as received_<filename>.

Extra Credits

• Uploaded source code on GitHub
• Demo of the FTP prototype: https://youtu.be/Q8x3nu8e3vk
• Used asynchronous tasks to handle multiple clients by creating a new task for each accepted connection.
• Included a learning summary https://github.com/satyamkumar2000/FTPOverQUIC/blob/main/learnings_summary.md
• Used systems programming language (Rust)