e2fa32b3c73d132b3e272d8e20790b9278734935
2
Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
 glm-5.2
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da0d395ab3 |
docs: fix tty-bast.md to cover only binary framing, not JSON payloads
The previous BAST document modeled the JSON payloads (NegotiateRequest, ControlMessage and its resize/signal/eof/exit variants, TerminalParams) as BAST struct/union definitions with uint16/int32 fields. That was a category error: BAST describes binary data layouts, and per the BAST format spec itself, "a BAST document cannot validate a JSON payload." The control and negotiation payloads on the wire are UTF-8 JSON text serialized via serde_json, not struct-encoded binary — the uint16/int32 field widths implied a binary encoding that does not exist on the wire and would have misled any generated validator. The rewrite keeps only the genuinely-binary framing layer: - ChunkHeader (5-byte: stream_type u8 + length u32 BE) - StreamType enum (name->index table; documented deviation: on-wire is uint8, not BAST's standard u32 enum index) - Chunk (header + length-prefixed bytes payload) - NegotiationFrame (4-byte BE length prefix + UTF-8 JSON body, modeled as bytes since the body's JSON interpretation is above the BAST layer) The JSON shapes (NegotiateRequest, ControlMessage, TerminalParams) remain specified in tty-wire.md and implemented by the Rust source (src/negotiation.rs, src/control.rs), which are the source of truth for those payloads. Cross-references in tty-wire.md, overview.md, and README.md updated to reflect the simplified scope. The drift-detection test (project plan "Risk: BAST schema drift") still works unchanged — it asserts the StreamType enum values match wire.rs's STREAM_* constants, and that enum is retained. Docs-only change; no Rust source changes. Verification: - cargo test --all-features -> 122 tests pass (unchanged) - cargo clippy --all-targets --all-features -- -D warnings -> clean - cargo fmt --check -> clean - cargo doc --no-deps -> no new warnings (9 pre-existing rustdoc link warnings in src/, unchanged) - BAST JSON block parses as valid JSON (4 : ChunkHeader, StreamType, Chunk, NegotiationFrame) |
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glm-5.2
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b3f50d1836 |
phase 4: architecture docs + BAST schema + renumbered ADRs
Port the alknet-tty architecture docs into alktty and add the BAST document for the alk/tty wire format. Docs-only; no Rust source changes. Spec docs (docs/architecture/, flat layout — single-crate repo): - overview.md — crate purpose, two-carriage model, deps, ALPN, backend location map, feature gates - tty-wire.md — 5-byte chunk codec, control channel split (STREAM_CTRL_IN=3 / STREAM_CTRL_OUT=4), sentinels - tty-backend.md — TtyBackend trait, TtyHandle, TtyControl, REQ-TTY-01 (backends need not be natively async) - tty-adapter.md — TtyAdapter, three-pump driver, exit-chunk ordering (ADR-004), cancel cleanup (ADR-005), access control - tty-local.md — LocalTtyBackend (local feature module), PTY + pipe modes, REQ-TTY-02 (signal forwarding to process group) - README.md — architecture index ADRs (docs/architecture/decisions/, renumbered 001..008 from alknet 052,053,054,055,056,057,077,093 in order): - 001 wire format + two-carriage model (incl. Phase 7 control- channel split amendment) - 002 TtyBackend trait + TtyHandle - 003 local backend placement (records both the alknet sibling- crate decision and the alktty single-crate consolidation behind a local feature) - 004 exit code on a control chunk - 005 backend cleanup on session cancel - 006 self-contained negotiation framing - 007 tty inside channels (reversed by 008; kept for historical context with reversal notice) - 008 channels pure channel multiplexing (reverses 007; TTY always uses its 5-byte format) BAST document (docs/architecture/tty-bast.md): - Normative JSON spec for the alk/tty wire format, conforming to the BAST meta-schema at https://alk.dev/bast/v1/schema - 5-byte chunk header (struct, big-endian: stream_type uint8, length uint32) + StreamType enum (Stdin=0..CtrlOut=4) - ControlMessage union (field-name discriminator on type: resize/signal/eof/exit) with documented deviation that on-wire control payloads are UTF-8 JSON, not BAST's binary union encoding - NegotiationFrame (4-byte BE length + UTF-8 JSON body) + NegotiateRequest / TerminalParams JSON shapes - StreamType enum deviation noted: on-wire uint8, not BAST's standard u32 enum index (chunk header is 5 bytes, not 8) - alktty does not depend on alktype; the hand-rolled wire.rs is the runtime codec, the BAST is the human-readable contract AGENTS.md: fixed the ADR mapping table to match the plan's 8-to-8 mapping (the previous table substituted ADR-050 for 054, relabeled 056 as control-message split, dropped 077, and added a new control-split ADR at 006 — inconsistent with both the plan and the prose). ADR-050 (dynamic resource ownership) is an alkcall/alknet- core ADR, not tty-specific, and is not ported; the Phase 7 control split stays as an amendment inside ADR-001, mirroring alknet. Verification (all pass, no Rust source changed): - cargo test (80 passed) - cargo test --all-features (103 passed) - cargo clippy --all-targets -- -D warnings (clean) - cargo fmt --check (clean) - cargo check --target wasm32-unknown-unknown (clean) - cargo clippy --target wasm32-unknown-unknown -- -D warnings (clean) - cargo doc --no-deps: 9 pre-existing intra-doc-link warnings in src/session.rs and src/channels.rs (untouched by this commit; not introduced here) - BAST JSON parses; StreamType indices match wire.rs constants (0=Stdin..4=CtrlOut) - all markdown cross-reference links resolve |