# aerorsync
[](https://crates.io/crates/aerorsync)
[](LICENSE)
Native Rust implementation of the rsync wire protocol 31.
## Status — reserved namespace
This crate is currently a **reserved placeholder**. The `0.0.x` series
secures the `aerorsync` name on crates.io while the implementation
matures inside [AeroFTP](https://github.com/axpdev-lab/aeroftp), where
it ships as a first-class component of the Aero family (working module
at `src-tauri/src/aerorsync/`).
A first usable public API will land once wire-level parity with stock
`rsync --server` is proven end-to-end. Until then this crate exports no
public items.
## Target scope
- rsync wire protocol 31 over SSH remote-shell
- single-file delta transfer via xxh128 file-level checksum and classic
`sum_head` / `sum_block` signature phase
- byte-level parity with stock `rsync 3.2.x` / `3.4.x`
Explicitly out of scope for the initial milestones: recursive tree
sync, symlink / hardlink, xattrs, ACL, session reuse, daemon mode.
## Licensing
GPL-3.0-only. Clean-room Rust reimplementation — no rsync source code
is included in this crate. The rsync wire protocol (bytes on wire,
handshake sequence, file-list format) is an interface specification and
not copyrightable subject matter (Sega v. Accolade, Oracle v. Google).
Precedent of independent rsync-named clean-room reimplementations in
different languages: OpenBSD's [`openrsync`](https://github.com/kristapsdz/openrsync)
(2019→, BSD-licensed, default on OpenBSD).
The upstream rsync project (rsync.samba.org) is GPL-3.0-or-later and is
acknowledged as the protocol reference; no affiliation or endorsement
is claimed.
## Sibling crates in the Aero family
- [`aerovault`](https://github.com/axpdev-lab/aerovault) — encrypted
vault format (AES-256-GCM-SIV / Argon2id / AES-KW / HMAC-SHA512)
## Contact
AXP Development Lab — dev@axpdev.it