Function write_framed_raw

nodedb-cluster/tests/wire_version_handshake.rs:112–116

Write a length-prefixed message to a quinn SendStream using the same framing as `handshake_io::write_framed` (4-byte big-endian length + payload).

(send: &mut quinn::SendStream, bytes: &[u8])

/// Write a length-prefixed message to a quinn SendStream using the same
/// framing as `handshake_io::write_framed` (4-byte big-endian length + payload).
async fn write_framed_raw(send: &mut quinn::SendStream, bytes: &[u8]) {
    let len = (bytes.len() as u32).to_be_bytes();
    send.write_all(&len).await.unwrap();
    send.write_all(bytes).await.unwrap();
}

// ── unit-level negotiation tests (no I/O) ────────────────────────────────────