simdsoft/yasio

Health v2 · maintenance only

Flags: no_license

Adoption not part of the score

1061 stars · 233 forks observed · 2026-09-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

yasio is a lightweight cross-platform C++ asynchronous socket I/O library focused on client-side networking for games and applications. It provides a unified API over TCP, UDP, and KCP with bindings for Lua, JavaScript, Unity, and Unreal Engine.

Use cases

• add async TCP/UDP networking to a game client
• unified socket API across Windows, iOS, Android and Linux
• handle TCP sticky packets without manual framing
• use KCP low-latency transport in a multiplayer game
• integrate C++ networking into Unity or Unreal via Lua/C# bindings
• support IPv4/IPv6 and Apple IPv6-only networks in a mobile app

When to choose

• building a game or mobile client that needs lightweight async socket I/O
• you need TCP, UDP, and KCP behind one consistent API
• you want engine integrations for Unity, Unreal, or Cocos2d-x
• you need broad platform coverage including Android, iOS, and Unix variants

When to avoid

• building server-side or high-throughput backend services rather than clients
• you need a full-featured HTTP client or REST stack
• your project requires a permissive license (Anti-996 license restricts some use)
• you need C++20-incompatible toolchains (4.4.0+ requires C++20)

Facets

library · maturity active

http-client websocket concurrency sdk networking cross-platform developer-tools cpp windows cross-platform game-engine asio tcp udp kcp async-io game-client-networking lua-bindings unity unreal-engine cocos2d-x ipv6 ssl game-development linux macos android ios

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markdown · JSON · MCP: product_card(name="simdsoft/yasio")