proxyparser

A cross-platform system proxy detector written in Rust, with strong support for complex enterprise PAC scripts.

Currently fully supports macOS (manual + automatic proxy configuration).
Windows and Linux support is actively in development.

Features

• Accurate system proxy detection across platforms

  • macOS: Complete implementation using SystemConfiguration / CoreFoundation
  • Windows: WinHTTP API (in progress)
  • Linux: GNOME/KDE config reading (in progress)

• Full-featured PAC script support

  • Automatic download of PAC files (http/https)
  • Pure-Rust JavaScript execution via boa_engine
  • Implements all standard PAC functions (dnsResolve, myIpAddress, isInNet, shExpMatch, etc.)
  • Handles complex enterprise scenarios (Zscaler, corporate networks, etc.)

• Correct proxy priority order

  • Environment variables (HTTP_PROXY, etc.) → System proxy → DIRECT

• Lightweight binary (~4.7 MB release build, heavily optimized)

Installation

cargo install proxyparser


# Query the proxy for a specific URL
proxyparser https://httpbin.org/ip

# Use the default target (google.com) if no URL is provided
proxyparser

git clone https://github.com/l16659/rustproxyparser.git
cd rustproxyparser
cargo build --release
./target/release/proxyparser https://example.com

# Current Status
This project is under active development and maintenance.

# License
This project is licensed under the MIT License.