Chili Palmer
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44 lines
2.5 KiB
Markdown
44 lines
2.5 KiB
Markdown
# Grid and directory discovery
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`GridClient.Grid`, `GridClient.Directory`, and `GridClient.InterestList` are
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client-owned managers. Repeated property access returns handles to the same
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state, and disposing the client releases their packet and capability
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subscriptions.
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`GridManager` uses the advertised `MapLayer` capability with an LLUDP fallback,
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and sends standard map-name, map-block, map-item, and region-handle LLUDP
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requests. Replies update the name, handle, and UUID indexes
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before observers run. Region names are indexed case-insensitively, repeated
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blocks replace older values, and entries expire after fifteen minutes using
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the client's injectable clock. Async lookups use `MapRequestTimeout`, observe
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the caller or client cancellation token, and return the cache result available
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at timeout. Map coordinates use 256-metre region origins; `MapItem` exposes
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the corresponding local coordinates and region handle, retains every raw
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reply field, and provides typed payloads for telehubs, agent clusters, land
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sales, and events. Coarse-location updates report complete current positions
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plus added and removed agent IDs.
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`DirectoryManager` sends correlated people, group, event, classified, parcel,
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land, place, and event-info requests. Query IDs are random and returned to the
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caller, reply pages are capped at 1,024 records, strings are bounded to the
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LLUDP variable-field limit, and negative page/price/area inputs are rejected.
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Reply events retain the server query or transaction ID so callers can combine
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pages without mixing concurrent searches. Maturity, category, sort, price,
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area, and ownership flags are sent unchanged. High-level search entry points
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start the same real server queries and return live `IAsyncEnumerable` streams
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that yield decoded records in reply order until cancellation, timeout, or a
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terminal page. Typed reply events remain available for callback-oriented
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consumers.
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`SlurlParser` accepts raw locations, `secondlife://` locations, maps URLs,
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legacy start locations, and `secondlife:///app` commands. It applies the
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reference coordinate defaults, decodes query values, and generates stable,
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percent-escaped application and location URLs. Inputs and query counts are
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bounded.
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`InterestListManager` posts LLSD to each simulator's `InterestList`
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capability. A mode is committed only after a successful response; missing
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capabilities return `false` for per-simulator calls. `SimulatorFeatures`
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atomically replaces its map after bounded LLSD validation and deliberately
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retains unknown feature keys for forward compatibility.
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