Implements the one-way-door backend inversion point in crates/alknet-tty/src/backend.rs: - TtyBackend trait (#[async_trait]): allocate() + resource_id() default None - TtyError enum (#[non_exhaustive]): AllocFailed, WaitFailed, Io, Backend - TtyParams + TerminalParams (allocation request shapes) - TtyHandle: stdin (AsyncWrite), stdout/stderr (Stream<Bytes>), exit_code (BoxFuture<Result<i32,TtyError>>), control (Option<TtyControlHandle>) - TtyControl trait (object-safe, NOT Clone) + TtyControlHandle newtype (#[derive(Clone)] wrapping Arc<dyn TtyControl + Send + Sync>) - From<NegotiateRequest> for TtyParams and From<TerminalParamsWire> for TerminalParams (adapter uses these; no hand-rolled mapping) - MockBackend (in-memory mpsc pipes + oneshot exit + MockControl) for compile-check and adapter tests - Unit tests: TtyControlHandle clone+delegation, MockBackend allocate/exit, resource_id default, From<NegotiateRequest> mapping (pty + pipe modes) TtyBackend trait doc carries REQ-TTY-01 (backends need not be natively async); TtyHandle.exit_code doc carries the ADR-056 kill-on-Drop contract. negotiation.rs carries minimal NegotiateRequest/TerminalParamsWire placeholders (field set per tty-wire.md) so the From conversion compiles before the negotiation task lands; that task replaces them with the full framing machinery.
Alknet
Status: Pre-alpha — This project is undergoing a major architectural pivot to an ALPN-as-service model. The previous implementation has been archived and a greenfield rebuild is in progress.
A self-hostable networking toolkit built on QUIC+TLS with ALPN-based protocol dispatch. Each protocol handler (SSH, SFTP, Git, HTTP, DNS, messaging, call protocol) registers an ALPN string on a shared endpoint. The ALPN negotiation during the TLS/QUIC handshake routes connections to the correct handler before any application bytes are read.
Core Insight
A service IS an ALPN. One endpoint, one port, many protocols — dispatched by the TLS handshake, not by application-level peeking or separate listeners.
Crates
| Crate | Status | Description |
|---|---|---|
alknet-vault |
stable | Local key vault: BIP39/SLIP-0010/AES-GCM key derivation and encryption |
alknet-core |
planned | ProtocolHandler trait, ALPN router, auth/identity, config |
alknet-ssh |
planned | SSH handler (russh), SOCKS5, port forwarding |
alknet-call |
planned | JSON-RPC call protocol (EventEnvelope framing) |
alknet-fs |
planned | Content-addressed file storage (iroh-blobs backend) |
alknet-sftp |
planned | SFTP handler (russh-sftp protocol core) |
alknet-git |
planned | Git smart protocol handler (gix) |
alknet-http |
planned | HTTP handler (axum, REST API, MCP) |
alknet-dns |
planned | DNS handler (hickory-proto, pkarr) |
alknet-msg |
planned | E2E encrypted messaging, mixnet support |
alknet |
planned | CLI binary (assembles and registers handlers) |
Documentation
- ALPN-as-service architecture — pivot proposal
- Cleanup plan — greenfield transition plan
- SDD process — spec-driven development process
- Research references — iroh, russh, russh-sftp deep dives
Reference implementation (previous architecture) is preserved at /workspace/@alkdev/alknet-main/.
License
Licensed under either of
- Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
- MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)
at your option.
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in this work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.