glm-5.2 ab47dac4ad docs(http): draft alknet-http architecture specs and ADRs 036-039
First speccing pass for alknet-http (HTTP interface crate: h2/http1.1/h3
server + from_openapi/to_openapi/from_mcp/to_mcp adapters).

Specs (crates/http/):
- README.md, overview.md — crate index, two-roles-in-one-crate framing,
  adapter location map, feature gates (h3, mcp), no-env-vars invariant
- http-server.md — HttpAdapter for h2/http1.1, axum over QUIC stream,
  Bearer auth, SSE projection for subscriptions, /healthz, stealth decoy
- http-adapters.md — from_openapi (reqwest) and to_openapi (projection),
  error fidelity (HTTP_<status> per ADR-023), type definitions
- http-mcp.md — from_mcp/to_mcp (feature-gated), streamable-HTTP-only
- webtransport.md — h3/WebTransport handler, browser streaming path,
  HTTP/3 request vs WebTransport session distinguished at framing layer

ADRs:
- ADR-036 HTTP-to-Call Operation Mapping (Proposed) — direct path
  mapping; to_openapi is projection, not router (the load-bearing one-way
  door from Phase 0 DH-3)
- ADR-037 MCP Stdio Transport Exclusion (Proposed) — streamable HTTP
  only; stdio is not built (RCE-vector security position)
- ADR-038 HTTP/3 and WebTransport as First-Class HTTP Transports
  (Proposed) — corrects the Phase 0 DH-2 deferral framing; h3 is in
  scope, not deferred, per ADR-009 §'What this framework is NOT'
- ADR-039 HTTP Server and Client Host Colocated in alknet-http
  (Proposed) — one crate for server + client host (shared HTTP deps,
  shared operation-spec->HTTP mapping)
- ADR-003 Amendment 1 — clarifies alknet-call is a protocol-foundation
  crate (the alknet-http -> alknet-call dependency edge)

Open questions (OQ-38, OQ-39, OQ-40 added under 'Theme: alknet-http'):
- OQ-38 WebTransport relay-as-proxy scope (genuine scope question, not
  a deferral — the decision is made when the use case becomes concrete)
- OQ-39 to_openapi published-spec versioning (one-way after first
  publication)
- OQ-40 reqwest client config and connection pooling (two-way-door)

Architecture README and overview updated with doc table, ADR table
(036-039), current-state note, and crate graph (alknet-http ->
alknet-call edge).

Reviewed by architecture-reviewer subagent: 3 critical, 4 warning, 5
suggestion issues found and fixed (missing ADR-039, WebTransport stream
routing conflation, undefined types, stale OQ-37 deferral language,
README OQ table completeness, Bearer-only attribution, cross-references,
ADR-038 ALPN quote, feature-gate placeholder, MCP temporal language).
2026-06-29 05:53:38 +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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