nwd1-quic

QUIC transport for nwd1 binary frames.

nwd1-quic provides async helpers to send and receive nwd1 frames over QUIC streams, using the quinn library. It integrates seamlessly with netid64 identifiers and uses Tokio runtime.

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🧱 Frame Layout

Each frame follows the nwd1 binary format:

MAGIC (4B) | LEN (4B) | ID (8B) | KIND (1B) | VER (8B) | PAYLOAD (variable)

• MAGIC: constant b"NWD1" header
• LEN: total byte length following header (u32, BE)
• ID: 64-bit network ID (netid64)
• KIND: frame type discriminator
• VER: protocol version
• PAYLOAD: binary application data

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⚙️ Example

use nwd1_quic::{send_frame, recv_frame};
use nwd1::Frame;
use netid64::NetId64;
use bytes::Bytes;
use quinn::{RecvStream, SendStream};

async fn example(mut send: SendStream, mut recv: RecvStream) -> anyhow::Result<()> {
    let frame = Frame {
        id: NetId64::make(1, 7, 42),
        kind: 1,
        ver: 1,
        payload: Bytes::from_static(b"hello"),
    };

    // Send frame
    send_frame(&mut send, &frame).await?;

    // Receive frame
    if let Some(received) = recv_frame(&mut recv).await? {
        assert_eq!(received.id.raw(), frame.id.raw());
    }
    Ok(())
}

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🧩 Design

• Fully async, tokio + quinn
• Uses read_exact_opt() helper for compact error handling
• Checks frame MAGIC early to avoid wasteful allocations
• Enforces maximum frame length (MAX_FRAME_LEN = 8 MiB) for safety

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📦 License

Licensed under either of:

• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)
• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)

at your option.