DNSwitch

DNSwitch is a small Go-based utility for managing and switching system DNS settings across multiple operating systems.

Overview

DNSwitch simplifies switching DNS servers temporarily or permanently. The project is designed to be cross-platform (Windows, Linux, macOS) and separates DNS logic from platform-specific network operations.

Features

• Manage system DNS settings
• Cross-platform support (Windows, Linux, macOS)
• Load and apply custom DNS configurations
• Simple, modular structure for easy extension

Project Structure

• main.go: program entry point.
• go.mod: Go module and dependency management.
• dns/: DNS-related logic
  • dns.go: public interfaces and general DNS functions.
  • system.go: system-level DNS application logic that calls platform-specific implementations.
  • custom_dns.go: read/write custom DNS configuration files.
  • utils.go: helper utilities related to DNS.
  • vars.go: global and default variables.
  • custom_dns.json: example or default custom DNS configuration (dns/custom_dns.json).
• network/: platform-specific network implementations
  • windows.go, linux.go, darwin.go: platform-specific routines to apply network/DNS changes.
  • network.go: public interface for network operations.
• pkg/: utility packages
  • input.go: input/argument handling (e.g., CLI args or interactive input).

How It Works (high level)

1. The program reads configuration or user input to determine which DNS settings to apply.
2. The dns layer manages DNS details and delegates platform-specific work to the network layer.
3. Custom configurations can be provided via dns/custom_dns.json or interactive input.

Configuration

• Example configuration file: dns/custom_dns.json. It can contain a list of DNS servers, priorities, and optional labels.

Build & Run

To build the binary:

go build -o DNSwitch main.go

To run directly during development:

go run main.go

Command-line arguments and runtime behavior are defined in the code; consult pkg/input.go for how inputs are parsed.

Contributing

• To add support for a new OS or improve DNS behavior, extend the appropriate files in network/ and dns/.
• Implementations should follow the interfaces in dns.go and network.go.

Issues

• Please open issues on the repository for bugs or feature requests.

License

No license file is included in this repository. Add a suitable license if you plan to publish or distribute the project.

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If you want, I can add: CLI usage examples, a concrete dns/custom_dns.json sample, or a short usage guide. Tell me which you'd like next.