reliable.io is a reliability layer for UDP protocols where there is a continuous bidirectional flow of packets.

It has the following features:

1. Identifies which packets were received by the other side (acks)
2. Packet fragmentation and re-assembly (send packets larger than MTU)
3. Provides estimates for round-trip time and packet loss

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 wrote an article series about the development of this library called Building a Game Network Protocol.

Open source libraries by the same author include: yojimbo and netcode.io

reliable.io is generously sponsored by:

• Gold Sponsors

  • Remedy Entertainment
  • 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 made this possible!

BSD 3-Clause license.