A2S Query protocol
Documentation for A2S Query protocol
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A2S is a popular UDP-based game server query protocol that Valve Software keeps as a part of the Steam SDK. Many game engines support A2S natively, but if yours doesn’t, you can add support for A2S manually by using one of the A2S libraries for your preferred language (for example, go-a2s for Golang, QueryMaster for C#). Visit the Valve Software wiki page for server queries to learn more about the technical details of the A2S protocol, including the protocol specification, response body format, and a list of implementations in various languages. To integrate a manual A2S implementation with Clanforge, you must configure at least the following variables: It’s important to ensure that the values reported for
Players
Max Players
A2S_INFO
Note: A2S is a legacy protocol. Unity’s SQP protocol is newer and integrates more easily into the Unity ecosystem.