KumoKyaku/kcp

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

1005 stars · 155 forks observed · 2026-09-03

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

A C# port of the KCP reliable UDP protocol, offering a thread-safe, allocation-free implementation suitable for game networking. It supports async APIs, custom segment types, Span<byte>, and unmanaged memory to avoid GC pressure.

Use cases

• implement reliable UDP transport in a Unity game
• reduce GC pressure in a C# network protocol implementation
• port KCP-based networking to .NET Standard
• use KCP with IL2CPP in Unity
• send messages safely from multiple async threads
• customize memory management for a network protocol

When to choose

• you need KCP in a C#/.NET or Unity project
• you need a zero-allocation, GC-friendly reliable UDP implementation
• you want async ValueTask-based I/O APIs
• you need thread-safe Send/Input from multiple threads

When to avoid

• you need the original C implementation or C bindings
• you need multi-threaded Recv/Update calls
• you rely on KCP stream mode filling the last unsent packet
• your project is not on .NET/Unity

Facets

library · maturity active

networking concurrency networking developer-tools dotnet cross-platform cpp kcp reliable-udp unity no-allocation il2cpp game-networking transport-protocol game-development

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markdown · JSON · MCP: product_card(name="KumoKyaku/kcp")