FRP Client Manager

A robust Windows Forms application to manage the FRP Client (frpc.exe) on Windows. Built with .NET and C#.

This tool is a GUI wrapper for fatedier/frp, a fast reverse proxy to help you expose a local server behind a NAT or firewall to the internet.

Features

• Process Management: Start and Stop frpc safely. Handles crashes and unexpected exits.
• Live Logs: View real-time stdout and stderr logs from the frpc process directly in the UI.
• Configuration Editor: Built-in TOML editor with validation. Prevents saving invalid configs.
• Safe Restart: Warns if you try to save config while running, offering a "Save & Restart" workflow.
• Tools & Diagnostics:
  • Local Test Server: Built-in HTTP server to test your FRP setup locally without external tools.
  • Port Checker: Verify if ports are open on local or remote hosts.
  • Public IP: Quickly check your external IP address.
  • Server Ping: Measure latency to your FRP server.
  • Process Monitor: Real-time RAM and CPU usage stats for the frpc process.
• Dependency Checks: Automatically detects if frpc.exe or frpc.toml are missing and helps you set them up.

Requirements

• OS: Windows 10/11
• Runtime: .NET Desktop Runtime (10.0, 9.0 or 8.0 depending on build)
• FRP: Requires frpc.exe (v0.50.0+ recommended)

Setup

1. Download/Build: Extract the application or build the solution.
2. First Run:
   • The app looks for a /frp folder next to the executable.
   • If missing, a Setup dialog will appear.
   • You can click Download from GitHub to get frpc.exe.
   • Click Create Default Config to generate a template frpc.toml.
   • Use Browse to select your frpc.exe and it will be copied to the local /frp folder.
3. Usage:
   • Dashboard: Click Start to run the proxy. View logs in the black console window.
   • Editor: Switch to the Config Editor tab to modify frpc.toml. Click Save & Restart to apply changes immediately.

Directory Structure

/FRPUI.exe          # Main Application
/frp/
    frpc.exe        # The actual frp client binary
    frpc.toml       # Configuration file
    frpc.toml.bak   # Automatic backup created on save

Development

• IDE: Visual Studio 2022 / VS Code
• Framework: .NET 10.0 (Change to net8.0-windows in .csproj if needed)
• Dependencies:
  • Tomlyn (NuGet) for TOML parsing.

Build

dotnet restore
dotnet build -c Release