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🤖 Community bans had gaps. Audio sockets never checked them: the audio join path didn't look up ban state, and a ban closed only the member's root sockets, so a banned member could join a huddle or stay in one. An agent's access comes from its owner, but the ban and timeout checks only looked at the pubkey that signed the event. Several write paths returned before those checks ran, admission could miss a ban that landed mid-AUTH, and removing or losing a member left live sockets open. This PR closes those gaps. ## Audio - `handlers/auth.rs`: the root socket's ban lookup, including the NIP-OA owner cascade and fail-closed DB handling, is `community_ban_outcome`. Root auth and audio join both call it, so the two checks can't drift apart. - `audio/handler.rs`: audio join runs the ban check after the write-free channel membership check and before any huddle lease or durable write. A ban is refused with `AuthorizationDenied` and a DB error with `AuthorizationUnavailable`. With no FI assertion, the refusal is the root route's text (`blocked: you are banned from this community` / `error: internal error checking restriction state`). - `state.rs`: `CommunityConnectionControl` holds the authenticated pubkey. `CommunityConnectionRegistry::disconnect_pubkey` closes bound audio sockets for one pubkey in one community with a 1008 `access revoked` close. `AppState::disconnect_pubkey_local` closes everything a pubkey has open in a community on this pod (root and audio); the clusterwide disconnect and the conn-control Redis subscriber in `main.rs` both use it, so remote pods close audio sockets too. Root sockets are still closed through `ConnectionManager`, so nothing is closed twice. A socket that proved a NIP-FI identity instead gets the standard NIP-FI denial (the restricted frame, then 1008 `authorization denied`), and a ban never overwrites a close reason already chosen. ## Behavior - **Owner restrictions carry to agents.** `restriction_state` folds in the restriction row of the agent's owner (`users.agent_owner_pubkey`) at read time. Nothing is copied onto the agent, so unbanning or un-timing-out the owner restores the agent immediately. Every hot-path caller (AUTH, ingest, audio, HTTP) picks this up. - **Admission is fenced against a concurrent ban.** Root AUTH and audio admission bind the proven pubkey to the socket first, then make the final ban and relay-membership decision (`handlers::auth::final_admission_denial`), then refuse if a disconnect already cancelled the socket. A ban or removal whose disconnect ran before the bind is visible to those fresh reads; one that runs after it finds and closes the bound socket. Both reads come from the writer, never the bounded-stale replica, so a removal that committed before the bind cannot be undone by a lagging replica. Both fail closed, and the check covers a delegated agent's owner. Each admitted socket records the agent's owner, from the NIP-OA tag or the stored link. - **Agents are always linked to their owner before admission.** Root AUTH and audio both record `users.agent_owner_pubkey` for a NIP-OA agent before admitting it, and refuse admission (`error: internal error recording agent owner`) if that write fails, because revoking the owner finds the agent's sockets through that link. - **Revoking live access covers agents without a database read.** `AppState::revoke_live_access` sends one clusterwide disconnect that closes, on every pod, each root and audio socket in the community whose principal **or recorded owner** is the target. An agent socket admitted before its owner link existed carries no recorded owner, so recording an owner for the first time (`materialize_nip_oa_owner`, the single writer used by root AUTH, audio admission and HTTP NIP-OA) closes that agent's ownerless root and audio sockets clusterwide; they reconnect with the owner attached. That disconnect skips owner-bound sockets. Admission with a NIP-OA owner records it on the socket before binding the pubkey, so the socket survives its own link; admission without one binds the pubkey first and then reads the stored owner, so a concurrent link either closes the socket or is seen by the read. A `users.agent_owner_pubkey` sweep still runs as a secondary path; if its lookup fails, the error is returned and there is no retry task. The kind-9040 ban, the report-action ban (left non-terminal so recovery re-runs it), relay-admin removal (9031), and NIP-43 self-leave all use it and report an incomplete revoke instead of claiming success. Each revokes right after its change commits; the ban no longer waits on its audit insert, whose error is still returned. - **NIP-43 self-leave works over WebSocket.** Kind 28936 is in the ephemeral range, so `handle_event` used to fan it out and answer `OK true` without removing membership. It is now routed to ingest; no other ephemeral kind changes. - **The write gate runs before every kind-specific branch.** `enforce_write_restriction` runs ahead of command routing (DM open, DM add member, DM hide, workflow definitions and triggers, approvals), product feedback, reports, and moderation or relay-admin commands. Ephemeral events and agent observer frames return before ingest in `handle_event`, so they go through the same gate there. - A ban exempts nothing. - A timeout admits only reports (kind 1984), unban (9041) and untimeout (9043). A timed-out admin cannot send relay-admin commands (9030–9033) until the timeout ends. - **HTTP refuses banned principals.** `enforce_relay_membership` runs a ban check after the membership decision, including on open relays: 403 `blocked: you are banned from this community` for a ban, 503 for a failed lookup. Media upload, media GET/HEAD and Git transport keep that 503 instead of reporting it as "not a relay member": in NIP-FI Enforce mode they send the canonical `AuthorizationUnavailable` response (`text/plain; charset=utf-8`, `authorization unavailable\n`), and in Off mode each keeps its legacy unavailable response. Media storage failures are not reclassified. Git transport checks membership and then runs its own ban check once per request. The NIP-OA owner is resolved from `x-auth-tag` when present. HTTP checks **bans only**: a timeout blocks writes, HTTP writes already reach the ingest gate, and reading stays allowed under a timeout. Unchanged by design: a lost Redis fan-out can leave another pod's socket open until it reconnects, and there is no recurring ban recheck on open sockets. ## Path table | Path | Category | Ban check | |---|---|---| | Root WebSocket AUTH and audio admission, including NIP-OA owner binding | community admission | final fenced check after bind; owner link required | | `POST /events`, `/query`, `/count` (`bridge.rs`) | community HTTP | existing `enforce_relay_membership` caller | | GIF search and `POST /gifs/share` (`gifs.rs`), media upload and fetch (`media.rs`), workflows (`workflows.rs`) | community HTTP | existing caller; media keeps 503 on lookup failure | | Git transport (`git/transport.rs`), git settings (`git/settings.rs`) | community HTTP | existing caller; transport keeps 503 on lookup failure | | `GET /moderation/reports`, `/moderation/audit`, `/moderation/restricted` | community HTTP | **newly covered** | | `POST /api/invites` (invite mint) | community HTTP | **newly covered** | | NIP-43 self-leave (WebSocket and `POST /events`, both via ingest) | roster change | revokes live access like admin removal | | Invite claim, accept-policy, `/api/join-policy*` | pre-membership invite and policy flows | none; ban state is checked when the caller authenticates | | `/`, `/info`, `/.well-known/nostr.json`, `/health`, `/_liveness`, `/_readiness` | public metadata and health | none | | `/hooks/{id}` | secret-authenticated webhooks | none; no community pubkey | | `/operator/*`, `/api/admin/v1`, `/internal/git/policy` | operator, admin and internal routes | none; separate auth plane | | `/_mesh/demo/echo` | demo only (mesh plus `mesh_demo_echo`) | none | ## Known limits - Cross-pod closure depends on the Redis fan-out; the tests prove the pod-local close by principal and recorded owner. - Live delivery to existing subscriptions depends on the disconnect. Events are not rechecked one by one. --------- Signed-off-by: Will Pfleger <pfleger.will@gmail.com> Co-authored-by: Hayt <211b96e6a2b7f45fd4047988976c7bbbeeda0c15f3ae7b32eec20834b5a55118@buzz.block.builderlab.xyz>