po-wire

Zero-dependency, no_std wire format codec for Protocol Orzatty (PO).

This crate provides the binary framing layer — encoding and decoding frame headers with QUIC-style VarInt fields. It is the foundation of the PO stack: every byte that crosses the network goes through po-wire.

Quick Start

use po_wire::{FrameHeader, FrameType};

// Encode a data frame header
let header = FrameHeader::data(0, 13); // channel 0, 13-byte payload
let mut buf = [0u8; 32];
let header_len = header.encode(&mut buf).unwrap();

// Decode it back
let (decoded, consumed) = FrameHeader::decode(&buf[..header_len]).unwrap();
assert_eq!(decoded.payload_len, 13);

Features

• Zero dependencies: No allocator needed. Pure core Rust.
• no_std compatible: Runs on WASM, embedded, anywhere.
• Compact: Minimum 4-byte header for small messages.
• QUIC VarInt: RFC 9000 §16 variable-length integer encoding.