📡 Pgm

A pure-managed, NativeAOT-ready implementation of PGM (Pragmatic General Multicast, RFC 3208) — reliable multicast — over UDP, for modern .NET. No native dependency.

• 📡 Wire-faithful PGM-over-UDP (SPM / ODATA / RDATA / NAK / NCF / SPMR), NAK-based repair, transmit/receive windows, FEC (Reed-Solomon), and congestion control.
• Multi-TFM: netstandard2.0, netstandard2.1, net8.0, net9.0, net10.0; NativeAOT-clean on net8+.
• Testable anywhere: the protocol runs over a pluggable datagram channel, so it is fully exercised over an in-memory bus (with injected loss/reorder) without needing real multicast.

📦 Install

dotnet add package Pgm

🛠️ Build & test

dotnet build Pgm.slnx -c Release
dotnet test Pgm.slnx -c Release

📚 Documentation

• Getting started
• Architecture
• Wire format
• API reference

🧪 Samples

• In memory Publish/Subscriber — 🚀 publisher + two subscribers over the in-memory bus; runs anywhere, no real multicast.

📊 Benchmarks

• Pgm.Benchmarks — BenchmarkDotNet micro-benchmarks for codec, checksum, and FEC.

📄 License

MIT