DNS Benchmarking Script

==========================

A Python script to benchmark the performance of different DNS servers base on your network setting. so you can determine which dns server is best for you!

Overview

This script tests the query time of multiple DNS servers for a list of specified domains. It uses the dig command to resolve the domains and measures the time taken for each query. The results are stored in a JSON file and can be used to compare the performance of different DNS servers.

Features

• Tests multiple DNS servers for a list of specified domains
• Measures the query time for each DNS server
• Stores results in a JSON file
• Can clear the DNS cache before running the tests
• Can plot the query times for each domain using matplotlib

Usage

Running the Script

1. Clone the repository and navigate to the directory.
2. Install the required dependencies: matplotlib and json.
3. Edit the dns_servers and domains lists in the script to specify the DNS servers and domains you want to test.
4. Run the script using python main.py.
5. Use the --clear switch to clear the DNS cache before running the tests.
6. Use the --graph switch to plot the query times for each domain.

Example Output

The script will output the fastest and slowest DNS servers for each domain, along with the query time. For example: Running without clearing DNS cache.

########################################
# Fastest DNS for unrivaled.ir: google (8.8.4.4) (116.202.96.103, 122.762680ms)
# Lowest DNS for unrivaled.ir: opendns (208.67.222.222) (116.202.96.103, 644.473553ms)
########################################
########################################
# Fastest DNS for gnu.org: google (8.8.8.8) (209.51.188.116, 113.784313ms)
# Lowest DNS for gnu.org: cloudflare (1.1.1.1) (209.51.188.116, 366.569519ms)
########################################

If you use the --graph switch, the script will display a bar chart showing the query times for each DNS server for each domain.

Example Run

To run the script and plot the query times, use the following command: python dns_benchmark.py --graph

To run the script with both options, use the following command: python dns_benchmark.py --clear --graph

Requirements

• Python 3.x
• matplotlib library
• json library
• dig command (usually installed by default on Linux and macOS systems)

License

This project is licensed under the GNU General Public License, version 3.0 (GPL-3.0). See the LICENSE file for details.