meshbay.git/packages/meshbay-node/tests/test_webrtc_transport.py, branch 0.17

fix(node): the roster, not the key alone, decides who gets a session

2026-09-30T09:57:03Z

The handshake opened a session for anyone holding the group key with a hub token naming the group; the roster was consulted only when wrapping the key in a join. A member revoked or unpinned on the node but still a member on the hub kept a full session with the key they already held — and was handed the chat epoch their removal had just opened, since chat keys go to any session. An honest client never met this (it asks for the key through join_request every time); one that kept the key did not have to. - After the proof, the node asks the roster and refuses with `not_authorized_for_group` unless the account is an active member of the group or the node's operator. - A removal from any door — MNP, the node page, the CLI — now opens a new chat epoch in each group the person could read, broadcasts it, and closes every connection they hold (`ops.members._after_removal`). The CLI and the node page did neither. - Design §5.2, protocol §6.1, §6.3, §14.2. Co-Authored-By: Claude Opus 5.5

fix: bound pending admin challenges and sign every value an op acts on

2026-09-28T19:14:10Z

Any member could make a node hold unbounded challenge requests; a connection now keeps at most 8, 64 KiB each. root_add, group_attach, invite_create and tmdb_config signed less than they did; their subjects are now canonical JSON of every value (the TMDB token by SHA-256). MNP 5.0, floor kept at 4.0. Co-Authored-By: Claude Opus 5.5

refactor: remove the unused GroupIndex.serialize chain

2026-09-28T14:24:12Z

serialize/deserialize had no production caller, and took with them the per-chunk signature, the ChaCha20 cipher variant and the zstandard dependency. Key derivations are unchanged. Docs corrected, including design §4.3's claim that chunks are compressed. Co-Authored-By: Claude Opus 5.5

fix(hub): present a node-audience token in the handshake, not the hub session token

2026-09-25T15:24:16Z

A member authenticated to a node in the MNP handshake with its hub *session* token — scope=user, valid at the hub API for hours. A node operator is in the threat model, so this handed them a live hub credential for the member: enough to enumerate the member's other groups, act as them, and (before the previous commit closed it) take the account over. The node genuinely needs a hub-signed membership assertion, so the fix is to make that a separate credential that opens nothing at the hub API. Two audiences signed by the one hub key (meshbay_common/tokens.py): - HUB_API_AUD — session tokens (login, device-auth, node-auth, refresh), used for hub calls and signaling. decode_access_token now binds this audience, so an MNP token cannot be replayed against the hub API. - MNP_AUD — a short-lived token a member presents to a node and nothing else, from POST /v1/nodes/mnp-token. authorize_token now binds this audience, so a session token presented to a node is refused. This closes the disclosure. The node's own self-decode (hub_client.py) reads its node token with audience=HUB_API_AUD. The client fetches the MNP token inside transport.connect() (and on every reconnect) using the session token, so callers are unchanged and signaling keeps using the session token. No regression to a long session: the MNP token is checked once, at the handshake, before any proof — a film already playing is not re-authenticated, so a 15-minute token does not interrupt a 4-hour film; reconnects refetch a fresh one. Denylist and membership checks are unchanged (the MNP token carries sub/jti/groups). Tests: authorize_token refuses a session/no-audience token and accepts an MNP token; the hub API refuses an MNP token; POST /v1/nodes/mnp-token is minted only for a member's own session. Verified red-before/green-after; common, node and hub suites green (the pre-existing test_cli_golden failure is an argparse/pytest prog artifact unrelated to this change). Still to do before deploy (B2): bump the MNP version and client.minimum so a stale desktop client is told to update rather than getting a handshake refusal, update docs/MESHBAY_DESIGN.md and MESHBAY_NODE_PROTOCOL.md, and validate against a real node locally, then deploy hub+node+SPA atomically. Co-Authored-By: Claude Opus 4.8

docs: drop the invitation-link plan from the tree

2026-09-23T15:46:48Z

The plan was a working document; what it decided lives in MESHBAY_DESIGN.md and MESHBAY_NODE_PROTOCOL.md. Code and tests now cite those instead. Co-Authored-By: Claude Opus 5.5

feat(node): invitation links — a code bound to no account until redeemed

2026-09-23T15:31:06Z

New invite kind "link": member of one group, once, never operator, not spendable by an active member, capped at 20 per group, cancellable by handle. Signed ops invite_link_create / invite_cancel, loopback routes, and the known-device join path now accepts a link code. Adds the plan, docs/invite-links.md. Co-Authored-By: Claude Opus 5.5

feat: the node signs its handshake challenge (MNP 3.4)

2026-09-23T15:14:26Z

node_pk in handshake_challenge is now signed over the channel binding and both nonces, so a client can check the node key before a join rather than only at the ack. Both transports; the browser and the QUIC client refuse a wrong signature and treat an absent one as an older node. Co-Authored-By: Claude Opus 5.5

style: the 98 ruff could not fix, so the linter is a signal again

2026-09-19T12:39:38Z

The pass before this applied ruff's own fixes. These are the ones needing a decision, and the point of doing them is that `ruff check .` now passes: a linter reporting 98 known-acceptable findings reports nothing, because the next real one arrives invisible. **Lines over 100 (70).** Mostly wrapped where they stood. Two exceptions: the aligned trailing comments in `protocol.py`'s message table were shortened rather than wrapped, because wrapping one row of a table breaks the table; and in `models.py` the column comments moved above their columns for the same reason. **Imports below the first statement (14).** `csam.py` kept its FastAPI imports under a section header halfway down the file; two node tests had a constant and a `pytestmark` wedged between two import blocks. Moved, not suppressed. **Bindings nothing reads (4).** Three in tests, where the call stays and only the name goes — `_user(client, "listener")` is there to create the user, not to return one. The fourth was in `revocation.py` and was not a lint finding at all: `_connect_and_listen` opened an httpx stream to the WebSocket URL, did `pass`, and then opened the real connection through the `websockets` library. One pointless request per connect, left over from before that library was used directly. Removed, and `httpx` with it. **`l` as a name (4)**, **semicolons (6)** in the POC spikes, and the rest. 2893 passed, the same count as the two commits before it. `meshbay_node/revocation.py` is worth a decision separately: 154 lines that nothing imports, superseded by `hub_client.maintain_ws`'s `on_revocation`. This commit only stopped it failing the linter. Co-Authored-By: Claude Opus 5

style: ruff's own fixes, mechanically applied

2026-09-19T12:24:13Z

`ruff check .` had gone unrun long enough to report 568 errors, which is the same as having no linter: the next real finding would have been invisible in the noise. This is the 521 it fixes by itself, in 173 files, and nothing else — the 98 it cannot fix are the next commit. What actually changed: import sorting (225), imports nobody used (87, none of them a re-export — no `__init__.py` is touched, which was the one way this could have broken an import elsewhere), `datetime.timezone.utc` to `datetime.UTC` (69) and `asyncio.TimeoutError` to `TimeoutError` (18), both plain aliases on the 3.12 this project requires, `Optional[X]` to `X | None` (24), and f-strings with nothing to interpolate (19). Checked rather than assumed: every module in the three packages still imports, and the suite is 2893 passed — the same count, test for test, as the merge before it. Co-Authored-By: Claude Opus 5

docs: cite MESHBAY_DESIGN.md and a section instead of the merged notes

2026-09-19T00:12:47Z

The per-feature design notes were merged into docs/MESHBAY_DESIGN.md and deleted from the tree on 2026-09-11, but ~230 comments across the three packages still named them — usually written `docs/musicbay.md §3.2`, as though the file were still in docs/. A reader had to know §16 existed to resolve any of them. They now name the section directly. Every mapping comes from §16, the concordance, which already records where each old section landed: musicbay -> §9.8, mediacenter -> §9.7 for the Videos app and §6.5 where the subject is derived data, photos -> §9.9, auth-confirm -> §3.6, refactoring-search -> §9.11, invite-pairing-v1 -> §3.4, per-node-identity-v1 -> §3.2, captcha -> §7.7, chat-sender-keys -> §4.5, apps/refactor-groups -> §9.1–§9.4, desktop-client-v1 per section. Bare citations of the same documents (`draft-v6 §2.11`, `§4.8`, `§3.4`) are retargeted too: those collide with real section numbers in the design document, so leaving them would have been worse than the named form. Four cases the concordance does not cover, each decided rather than guessed: Sub-item references into documents that no longer exist — mediacenter's `§3.3 row 4`, `§3.4b/c`, `apps.md §3b` — name rows and sub-items §9.7 and §9.2 do not reproduce. The module-level citation stays; the sub-item pointer is dropped. The V-findings keep their labels but lose the dead `§10.1/` prefix. §13.8 lists V1–V13 as per-application open items, which is not what the labels mean in these comments, so pointing them at §13.8 would have been a false citation. `apps.md §5`'s virtualization requirement has no counterpart anywhere in the design document. The requirement is stated in the comment itself, so the citation is dropped rather than aimed at a section that does not say it. Comments that attributed a *sentence* to an old note — musicbay's "several thousand files" example, its "what got measured" note, its measured ~11%/~26% cover-art figures, the "original no root, whole shared tree" call — state the fact without attribution now. §9.8 does not contain those sentences and citing it for them would have been wrong. CLAUDE.md's "a reference to a document that no longer exists" row now says the concordance is for git history and out-of-tree material; the code cites sections directly. Verified: 2851 passed, 4 skipped. The 12 errors in the run are the Firefox leg of test_sticky_header.py's browser harness, which is broken at the browser level on this machine — headless Firefox (snap) dies with `[GFX1-]: RenderCompositorSWGL failed mapping default framebuffer`, renders nothing, and the probe exits `{"error": "no measurement"}` after its full 90s wait. Chrome runs the same 12 assertions in 3.2s and passes. Nothing here can affect it: every changed line in style.css is inside a comment. Also checked: ast.parse on every changed .py, `node --check` on every changed .js, the /* */ balance in style.css, and that no changed line exceeds the width its file already used. Co-Authored-By: Claude Opus 5