pokhrl/orbis

Orbis is a cross platform VPN engine written in C++20. It is meant to be used as a building block inside other applications that need VPN functionality, not as a ready to use VPN app you install and click connect on. If you are a developer building a networking product and want VPN connection handling without writing your own cryptography and tunnel management from scratch, this is the kind of library you would drop into your project. Rather than reinventing encryption and tunneling itself, Orbis relies on WireGuard, a well known and widely trusted VPN protocol, and wires into the native WireGuard support already built into each operating system. On Linux it connects through the WireGuard implementation that lives inside the Linux kernel, using Netlink to talk to it. On Windows it uses WireGuardNT through a system file called wireguard.dll. Support for macOS, Android, and iOS is planned but does not exist yet, so right now Orbis only works on Linux and Windows. The project is documented in two extra files worth reading before diving in: one describes the engine's internal architecture, and the other tracks exactly which platforms are supported and which are still missing. To build it, you use CMake, the common C++ build tool: configure the project, build it, then run the test suite with ctest. There is also a small example program you can build and run that shows how to make a basic VPN connection, once you generate a WireGuard key pair and edit the example with your own configuration. Running the example requires administrator or root privileges since it manages real network connections. Orbis is released under the Apache 2.0 license, a permissive license that allows commercial and personal use.