WireGuard

I’m working on bringing the WireGuard VPN tunnel to iOS and macOS using the Network Extension framework. The iOS version is now in the App Store (announcement).

I initially tried to implement the WireGuard protocol in Swift, but abandoned that after learning that the WireGuard team had plans to make the Go implementation of WireGuard (used in their Android app) available for use in iOS.

When I took a look at WireGuard after a few months, a C API based on WireGuard-Go was available that could be used from iOS, and an effort to make an iOS app was underway.

I proposed a rewrite of the app to:

  • Use the VPN tunnel for data persistance instead of Core Data
  • Redo the UI to support both the iPhone and iPad
  • Redo the UI in code (no Interface Builder)
  • Minimize dependancies on third-party code
  • Enable a macOS version to be developed with the same code base

My pitch was accepted, and I’m currently working on this project. My work on this project is sponsored by the NLnet Foundation.

The features implemented so far in the iOS version are:

  • Bringing up a WireGuard tunnel
  • Creating, viewing and modifying tunnel configurations
  • Importing from a .conf or .zip file
  • Importing through QR code (adapted from the code before my rewrite)
  • Exporting all tunnels to a .zip file
  • On-Demand VPN
  • State Restoration
  • Support for Dynamic Type

Source code: https://git.zx2c4.com/wireguard-ios/