gbp-core

Core type vocabulary for the Group Protocol Stack — StreamType, frame flags, FSM states, control opcodes, signal opcodes and the canonical error code registry.

This crate is dependency-light (only core / alloc) and is the foundation every other crate in the stack builds on.

Key types:

• StreamType — Audio=1, Text=2, Signaling=3
• PayloadCodec — Cbor=0, Protobuf=1, FlatBuffers=2; controls which wire format is used for sub-protocol payloads (signalled via GBP frame pf)
• ControlOpcode, SignalOpcode — numeric registries
• GbpError / error code constants

Stack overview

┌── application ──────────────────────────────────────────────────────┐
│  gtp-protocol · gap-protocol · gsp-protocol  (TCP/UDP/SCTP-like)    │
├──────────────────────────────────────────────────────────────────────┤
│                  gbp-protocol  (the IP-like base)                   │
├──────────────────────────────────────────────────────────────────────┤
│                  gbp-core   ← you are here                          │
└──────────────────────────────────────────────────────────────────────┘

License

Licensed under Apache License, Version 2.0.