glm-5.2 b60a5844ba refactor(core,http,tty,call): unify stream leaf — BiStream as the handler leaf (Phase 6)
Implement ADR-092 across the workspace: accept_bi/open_bi return BiStream
(a concrete AsyncRead + AsyncWrite + Send + Unpin newtype), not the split
(SendStream, RecvStream) pair. The join moves into core's BidiStreamSource
impls (quinn/iroh via tokio::io::join, single-stream via boxed AsyncReadWrite);
handlers receive the joined BiStream and never see the pair.

Core (alknet-core/src/types.rs):
- Add concrete BiStream struct boxing Box<dyn AsyncReadWrite + Unpin>,
  with AsyncRead + AsyncWrite impls. from_joined (pub, for downstream
  crates that produce split halves naturally — channels reassembly, tests)
  and from_bidi (pub(crate), for Connection::from_bidi) constructors.
- Change BidiStreamSource::accept_bi/open_bi return types from
  (SendStream, RecvStream) to BiStream. Update QuinnBidiStreamSource,
  IrohBidiStreamSource, StreamBidiStreamSource impls to do the join once.
- Collapse SendStream/RecvStream to thin newtypes over
  Box<dyn Async* + Send + Unpin>. Remove SendStreamKind/RecvStreamKind
  enums and the quinn/iroh per-call dispatch (the join happens once in the
  BidiStreamSource impl now). Keep SendStream::from_stream /
  RecvStream::from_stream per-half boxing for into_sub_streams() (ADR-074)
  and the future channels reassembly path.
- Remove Connection::from_stream (split-pair constructor). Promote
  Connection::from_bidi to the only public stream constructor (the rule:
  the split never crosses a crate boundary as part of a constructor).
- Update Connection::accept_bi/open_bi to return BiStream. Update
  from_source_tests and tests modules to use from_bidi and BiStream;
  add a SinkEmpty test helper (AsyncRead EOF + AsyncWrite discard) for
  Connection-level-only test connections.

alknet-http (server/adapter.rs):
- Drop the 44-line QuicStream wrapper — accept_bi returns BiStream which
  is already AsyncRead + AsyncWrite. HttpAdapter::handle becomes 4 lines.
- Drop the 38-line QuicStreamDuplex test helper — tests use a single
  tokio::io::duplex whose ends are each AsyncRead + AsyncWrite natively.
- Remove unused std::io / std::pin::Pin imports.

alknet-tty (adapter.rs):
- TtyAdapter::handle splits the BiStream from accept_bi via
  tokio::io::split for drive_session's separate AsyncWrite/AsyncRead args
  (the stdlib idiom for TcpStream-style duplex streams).

alknet-call (protocol/*, client/*):
- Dispatcher::run_loop accept_bi site: take BiStream, pass to handle_stream.
- Dispatcher::handle_stream signature: take BiStream, split internally via
  tokio::io::split (was: take SendStream + RecvStream separately).
- CallConnection::call_with_payload / subscribe_with_payload / write_envelope:
  split the BiStream from open_bi via tokio::io::split at the call site.
- write_request / read_stream_until_closed: generic over AsyncWrite/AsyncRead
  (were: concrete SendStream/RecvStream) — accepts the ReadHalf/WriteHalf
  from tokio::io::split directly.
- Add protocol/test_support.rs with sink_empty_connection() (replaces the
  5 duplicated stub_connection() fns that used Connection::from_stream).
- Update all test stubs (call_client.rs, protocol/connection.rs,
  protocol/dispatch.rs, protocol/adapter.rs, client/from_call.rs) to use
  Connection::from_bidi + the shared sink_empty_connection() helper.
- Test handle_stream call sites: build BiStream::from_joined(recv, send)
  from the existing BufReader<Cursor> + duplex pair.

Workspace test status: all 9 crates pass (116 + 307 + 18 + 3 + 17 + 301 +
34 + 61 + 23 + 5 + 6 + 8 + 82 + 4 + 3 + 6 + 12 + 1 = 1007 tests pass). One
pre-existing failure remains in alknet-http
(adapters::to_mcp::tests::search_returns_access_control_filtered_ops_excluding_subscriptions
— handler kind mismatch, unrelated to Phase 6, fails on develop baseline).
2026-07-18 15:59:01 +00:00

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

Reference implementation (previous architecture) is preserved at /workspace/@alkdev/alknet-main/.

License

Licensed under either of

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.

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