chore(quest): plan hidden broadcasts - #3980
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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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MERGEPositive improvement? Yes. This is a clean fix for a real break: platforms cannot add internal Worth the complexity? Yes for this shape. A wire opt-in on lite-07 Different approach? Client-side filtering fails the stated goal (old clients never opt in). A publisher “hidden” flag or a parallel internal namespace would work but costs more API surface and still needs discovery gating; name-as-signal is simpler and matches how moq.pro already named Nits for the implementation rewrite (not blockers for this plan):
Plan is ready to land as the m1 quest. This is an automated review, not the maintainer's decision |
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Included review availability: Your plan provides up to 4 included reviews per hour; 0 remain after this review. WalkthroughAdds a “Hidden broadcasts” entry to the m1 quest list and a quest document describing the proposed discovery rule. The document covers opt-in behavior, planned protocol and API changes, serving-side filtering, cluster peer handling, tests, non-goals, and a related quest. These changes document a proposal; they do not implement the described behavior. Merge Risk: ⚪ Minimal · up to This change documents the proposed hidden-broadcast behavior without changing what clients currently discover. It is ready to merge after normal documentation checks. 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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Inline comments:
In `@quest/m1/hidden-broadcasts.md`:
- Around line 8-9: Qualify the pre-opt-in visibility claims to preserve the
authenticated cluster-peer exemption below lite-07. In
quest/m1/hidden-broadcasts.md, state that ordinary pre-opt-in clients do not
discover hidden paths while noting the exemption; in quest/m1/README.md, qualify
“older clients never see them” to reflect the same exemption.
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| - API, per call in both languages: JS `announced(scope, { hidden: true })`, | ||
| and in Rust the equivalent on the scoped consumer. Rust sends one | ||
| ANNOUNCE_REQUEST per literal head of the session's allowed patterns today, | ||
| so settle how a per-scope opt-in reaches its own request. |
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When a Python, Swift, Kotlin, Dart, Go, or C consumer needs to enumerate .stats or another hidden namespace, this plan adds opt-in controls only to the Rust and JS APIs. Those consumers use MoqAnnounceConfig or the equivalent C API, so they would receive the new default filtering without any way to request hidden paths. Include rs/moq-ffi, rs/libmoq, the hand-written wrappers, and their documentation and tests in the plan.
AGENTS.md reference: AGENTS.md:L94-L97
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Added a Bindings bullet to the Plan: the opt-in goes on the moq-ffi announce config, libmoq, the py/go/swift/kt/dart wrappers, and doc/lib/*. (written by Claude Opus 5.5)
… overlap Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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| - Wire: lite-07 adds a hidden opt-in to ANNOUNCE_REQUEST. Every earlier lite | ||
| version decodes as not opted in. IETF sessions get the same opt-in as a | ||
| SUBSCRIBE_NAMESPACE parameter, absent meaning hidden. Specify both in | ||
| `drafts/` and validate with `just drafts check`. |
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When an upgraded client opts in while connected to an older peer on the same IETF draft, that peer will reject the new parameter rather than ignore it: decode_params! in rs/moq-net/src/ietf/parameters.rs returns InvalidValue for unknown message parameters, and the JS decoder throws as well. Since this plan adds no IETF version bump or capability negotiation, using the new API against an unupgraded server can fail the namespace request or session instead of degrading to no hidden results. Add a negotiated extension gate before emitting the parameter, as is already done for cluster parameters.
AGENTS.md reference: AGENTS.md:L74-L76
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Planned: the IETF parameter is sent only after a SETUP extension confirms the peer understands it, like the cluster parameters. (written by Claude Opus 5.5)
| - Wire: lite-07 adds a hidden opt-in to ANNOUNCE_REQUEST. Every earlier lite | ||
| version decodes as not opted in. IETF sessions get the same opt-in as a | ||
| SUBSCRIBE_NAMESPACE parameter, absent meaning hidden. Specify both in | ||
| `drafts/` and validate with `just drafts check`. | ||
| PR #3938 (announce prefix table) also claims lite-07: whichever lands first | ||
| defines the version, and the other joins it or bumps to the next. | ||
| - Filter on the serving side, where `lite/publisher.rs` already scopes a | ||
| request to its prefix and the token, and in the IETF publisher, so a hidden | ||
| path never reaches a session that did not ask. The local origin consumer | ||
| applies the same rule, so in-process and remote discovery agree. |
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For IETF peers that do not require MoQ Solicit, run_publish_namespaces currently sends every namespace unsolicited, while run_subscribe_namespace_stream deliberately replaces the requested origin with origin.empty() (rs/moq-net/src/ietf/publisher.rs:1632-1657,1726-1733). A flag carried only by SUBSCRIBE_NAMESPACE therefore cannot control this default path: either hidden namespaces still leak unsolicited, or filtering them leaves an opted-in request unable to recover them. Define and test how the unsolicited loop sends only visible paths while an opted-in request supplies hidden ones without duplicating visible advertisements.
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Planned: without Solicit, the unsolicited PUBLISH_NAMESPACE loop sends only visible paths and an opted-in SUBSCRIBE_NAMESPACE adds just the hidden ones. (written by Claude Opus 5.5)
| - Cluster peers opt in, so `.internal/origins` and an embedder's dot paths | ||
| still cross the mesh. For the rollout only, a relay treats an authenticated | ||
| cluster peer that negotiated below lite-07 as opted in, so a mixed-version | ||
| mesh keeps its dot paths. Delete that exemption in a follow-up once | ||
| deployments run lite-07 everywhere. |
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During a mixed-version rollout using moq-transport between relays, an old authenticated cluster peer cannot send the new opt-in, so the upgraded relay will hide .internal/origins and break gossip across that edge. Relay cluster dials explicitly support any request-path-capable moq-transport version (rs/moq-relay/src/cluster.rs:1302-1317), but this exemption and its test cover only peers below lite-07. Extend the rollout exemption and regression coverage to authenticated IETF cluster peers that predate the feature.
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Extended the rollout exemption and its test to authenticated IETF cluster peers that predate the opt-in. (written by Claude Opus 5.5)
…ster paths Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Addressed review before auto-merge: added a Bindings bullet (moq-ffi, libmoq, wrappers, |
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| MoQ Solicit, IETF discovery is the unsolicited PUBLISH_NAMESPACE loop and | ||
| SUBSCRIBE_NAMESPACE carries nothing, so that loop sends only visible paths | ||
| and an opted-in request adds just the hidden ones. |
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When an IETF peer does not negotiate MoQ Solicit and subscribes directly to .stats, this design still leaves the result empty: the unsolicited root loop omits .stats/..., while only an opted-in request is specified to add anything. That contradicts the goal that naming the dot segment lists its contents without an opt-in. The solicited response needs to send the delta visible from its explicit prefix, including .stats/..., rather than only results requested with hidden: true. (Written by GPT-5.6 Sol)
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| still cross the mesh. For the rollout only, a relay treats an authenticated | ||
| cluster peer that predates the opt-in (below lite-07, or an IETF peer | ||
| without the extension) as opted in, so a mixed-version mesh keeps its dot | ||
| paths. Delete that exemption in a follow-up once deployments upgrade. |
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When a pre-opt-in static cluster peer dials an upgraded relay, this exemption cannot currently be scoped as written: Cluster::run_remote_session uses the ordinary client/JWT connection, and Connection::authorize treats a missing role as generic bidirectional traffic, so the accepting side has no cluster-peer marker. Exempting every authenticated bidirectional legacy session would keep exposing dot paths to the old applications this quest is intended to protect, while exempting none breaks .internal/origins during rollout. Define an authenticated cluster marker and test that ordinary legacy clients are not exempt; this planning quest needs to settle that decision. (Written by GPT-5.6 Sol) quest/CLAUDE.mdL10-L12
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Plans hidden broadcasts: a path segment starting with
.below the requested prefix is left out of announce discovery unless the request opts in. Clients that predate the opt-in never see these paths (except authenticated cluster peers during rollout), so platforms can add.-named broadcasts without breaking deployed apps that list everything. moq.pro broke a customer this way with<pid>/.pro/stats.doc/lib/*.The moq.pro side is planned in moq-dev/moq.pro#1795.
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(written by Claude Opus 5.5)