• 中文主页: README-cn.md

EpTUN is a Windows GUI/tray app for traffic hijacking and routing based on tun2socks.

Use EpTUN when you need one or more of these scenarios:

• You have a local proxy core (for example v2rayA/v2ray-core) and want system-level traffic hijack via TUN, not per-app manual proxy setup.
• You want a GUI/tray workflow to start, stop, and reload routing behavior instead of running netsh and route commands by hand.
• You need split behavior where selected traffic stays direct (for example CN routes from cn.dat) while other traffic goes through proxy.
• You need dynamic bypass for upstream/proxy-node addresses (such as v2rayA discovered endpoints) to avoid routing loops and unstable connections.
• You want runtime observability and safer operations for route-based networking changes on Windows.

EpTUN is usually unnecessary if browser/app-level proxy settings already satisfy your needs and you do not require system-wide routing control.

• Usage Guide (English): docs/USAGE.md
• 使用文档（中文）: docs/USAGE-cn.md

The usage guides focus on configuration fields, term definitions, and runtime reload behavior.

• tun2socks
• Wintun
• v2rayA (optional)
• v2fly/geoip (cn.dat, optional)

1. Prepare appsettings.json (see appsettings.example.json).
2. Put tun2socks.exe and wintun.dll next to EpTUN.exe.
3. Run EpTUN.exe as administrator and use the GUI.

dotnet build .\EpTUN.csproj -c Release

dotnet publish .\EpTUN.csproj -c Release -r win-x64 --self-contained true `
  -p:PublishSingleFile=true `
  -p:IncludeNativeLibrariesForSelfExtract=true `
  -o .\bin\EpTUNPortable