Shadowsocks Windows

A C# port of shadowsocks
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[logo] Shadowsocks for Windows

Build Release


  • Connect to Shadowsocks servers.
  • Automatically set system proxy.
  • SIP002 URL scheme.
  • SIP003 plugins.
  • SIP008 online configuration delivery.


Download from releases.



  • The PAC rules are generated from the geosite database in v2fly/domain-list-community.
  • Generation modes: whitelist mode and blacklist mode.
  • Domain groups: geositeDirectGroups and geositeProxiedGroups.
    • geositeDirectGroups is initialized with cn and [email protected].
    • geositeProxiedGroups is initialized with geolocation-!cn.
  • To switch between different modes, modify the geositePreferDirect property in gui-config.json
    • When geositePreferDirect is false (default), PAC works in whitelist mode. Exception rules are generated from geositeDirectGroups. Unmatched domains goes through the proxy.
    • When geositePreferDirect is true, PAC works in blacklist mode. Blocking rules are generated from geositeProxiedGroups. Exception rules are generated from geositeDirectGroups. Unmatched domains are connected to directly.
  • Starting from, shadowsocks-windows defaults to whitelist mode with Chinese domains excluded from connecting via the proxy.
  • The new default values make sure that:
    • When in whitelist mode, Chinese domains, including non-Chinese companies' Chinese CDNs, are connected to directly.
    • When in blacklist mode, only non-Chinese domains goes through the proxy. Chinese domains, as well as non-Chinese companies' Chinese CDNs, are connected to directly.

User-defined rules

  • To define your own PAC rules, it's recommended to use the user-rule.txt file.
  • You can also modify pac.txt directly. But your modifications won't persist after updating geosite from the upstream.


  • IDE: Visual Studio 2019
  • Language: C# 9.0
  • SDK: .NET 5


  1. Clone the repository recursively.
$ git clone --recursive
  1. Open the repository in VS2019, switch to the Release configuration, and build the solution.


PR welcome

You can use the Source Browser to review code online.


Shadowsocks-windows is licensed under the GPLv3 license.

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ReactiveUI.Fody (MIT)  
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