moqtap-codec

Pure data transformation. No I/O, no state.

crates.io | API docs

What it does

moqtap-codec parses raw bytes into typed MoQT control messages and serializes them back. It handles:

• Varint encoding/decoding (RFC 9000 format)
• Key-Value-Pair parsing
• All draft-14 control message types
• Data stream header parsing
• Datagram parsing
• Draft-version-aware dispatch

Usage

use moqtap_codec::{parse, serialize, DraftVersion};

// Parse bytes into a message
let (message, warnings) = parse(&bytes, DraftVersion::Draft14)?;

// Serialize back to bytes
let bytes = serialize(&message, DraftVersion::Draft14);

Lenient parsing

The codec never panics on malformed input. Unknown message types, unexpected field lengths, and unknown parameters produce ParseWarning entries:

let (msg, warnings) = parse(&bytes, DraftVersion::Draft14)?;
for w in &warnings {
    eprintln!("Warning: {}", w);
}

Dependencies

Only bytes and serde. Zero I/O dependencies.