Rust DNS Server

This is a simple DNS server implementation written in Rust designed for educational purposes. It demonstrates the basic structure of DNS packets and how a DNS server might parse and respond to requests.

Features

• Parse incoming DNS queries.
• Build DNS response packets with hardcoded values.
• Listen for UDP DNS requests on a specified address and port.
• Respond to DNS requests with an example A record.

Project Structure

The project is organized into the following modules:

• dns_header: Handles the DNS header structure and methods.
• dns_question: Processes DNS question section.
• dns_resource_record: Creates DNS resource records for the response.
• utils: (Optional) Contains shared utility functions, if needed.

Getting Started

To get started with this project:

1. Install Rust if you haven't already done so.
2. Clone this repository.
3. Navigate to the project directory.
4. Run cargo build to compile the program.
5. Execute cargo run to start the DNS server.

Configuration

The server is currently set to listen on 127.0.0.1:5003. To change this, modify the bind address in main.rs.

Testing

To test the DNS server, use a DNS query tool like dig or nslookup and direct the queries to the local address and the port the server is listening on.

Example using dig command:

dig @127.0.0.1 -p 5003 example.com