get-local-address 0.1.0a1

A simple utility to determine the local IP address that would be used to communicate with a specified remote UDP server.

get-local-address

A simple utility to determine the local IP address that would be used to communicate with a specified remote UDP server.

Description

This program creates a UDP socket, connects it to a target server (default: Cloudflare's DNS at 1.1.1.1:53), and then retrieves the local IP address that would be used for this connection. This is particularly useful for systems with multiple network interfaces to determine which interface would be used to reach a specific destination.

Features

• Configurable target address and port
• Lightweight, dependency-free
• Cross-platform

Installation

pip install get-local-address

After installation, run it as get_local_address.

Usage

get_local_address [-a ADDRESS] [-p PORT] [-h]

Options

Option	Description
-a, --address ADDRESS	Target server address (default: 1.1.1.1)
-p, --port PORT	Target server port (default: 53)
-h, --help	Show help message

Output

The program outputs the local IP address that would be used to communicate with the specified server, e.g.:

192.168.1.5

Limitations

• Only supports IPv4 addresses
• Requires network connectivity to the target server (though no actual packets are sent)
• May not work correctly with some firewall configurations

License

MIT License