libyojimbo is a new, easy-to-use library for creating secure client/server network protocols over UDP.

It is designed around the networking requirements of competitive realtime multiplayer games such as first person shooters and action games. As such it provides the absolute fastest, most time critical networking layer over UDP, with a client/server architecture supporting up to 64 players per-dedicated server instance.

libyojimbo is currently in pre-release for early feedback. Right now it provides support for: cryptographically secure authentication, client/server connection management, encryption for packets sent over UDP, reliable-ordered messages and data blocks, plus a serialization framework for extending the protocol with custom messages and packet types.

Work over the past few months has been focused on documenting and finalizing the API. This work is nearly complete and a new release is imminent. After the documentation push, new features coming soon include packet fragmentation and reassembly and extending the matcher to support dynamically registered server instances.

For more details please refer to the roadmap.

The author of this library is Glenn Fiedler, a recognized expert in the field of game network programming with over 15 years experience in the game industry.

Glenn is currently writing an article series about the development of this library called Building a Game Network Protocol.

You can support Glenn's work writing articles and open source code via Patreon.

libyojimbo is generously sponsored by:

• Gold Sponsors

  • Cloud Imperium Games

• Silver Sponsors

  • Moon Studios
  • The Network Protocol Company

• Bronze Sponsors

  • Kite & Lightning
  • Data Realms

And by individual supporters on Patreon. Thank you. You make this possible!

BSD 3-Clause license.