DNS Server with Market Timing Responses(M)

This project implements a simple DNS server using Node.js, which responds with market timing information based on Indian Standard Time (IST). The server listens for DNS queries and returns TXT records with information on whether the market is open or closed, and how much time is left until the next market event.

Features

• Responds to DNS queries with market timing information.
• Provides custom TXT record responses based on the current time.
• More features will come, not just market time.

Installation

Prerequisites

• Node.js (version 14 or higher)
• npm (Node Package Manager)

Steps

1. Clone the repository:

   git clone https://github.com/yourusername/dns-market-time.git
   cd dns-market-time

2. Install the dependencies:

   npm install

3. Create a .env file with the following contents:

   PORT=
   ADDRESS=

4. Start the server:

   npm run dev

Usage

Sending a DNS Query

You can use tools like dig to query the DNS server.

Example Command:

# Querying the market time TXT record
# Replace "market.time" with your query name and 127.0.0.1 with your server's address.
dig @127.0.0.1 -p 53 market.time TXT

Expected Output:

The server will respond with a TXT record indicating the current market status:

;; ANSWER SECTION:
market.time.        300    IN    TXT    "Market will open in 0 hours and 15 minutes."

Customization

Modifying the Market Timing Logic

To change the market open and close times, update the following lines in server.ts:

marketOpen.setHours(9, 15, 0, 0);
marketClose.setHours(15, 30, 0, 0);

Changing the Response Message

You can customize the TXT record response by modifying the data field in the response.answers.push calls.

Troubleshooting

• Port Binding Error: If you encounter an error related to port binding, make sure no other service is using port 53 on your machine.

• No Response to Queries: Ensure the server is running and listening on the correct port and address. Use netstat or similar tools to check.

License

This project is licensed under the MIT License. See the LICENSE file for more details.

Contributing

Feel free to submit issues or pull requests if you have suggestions or improvements.