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CDNs found by themselves, and servers followed through time
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PrivaPub now finds CDNs three ways, best first: the address ranges the
CDNs publish (Cloudflare, Fastly, Amazon CloudFront, Bunny, Gcore,
Imperva), downloaded daily by CdnUpdater and kept in CdnRangeSet; the
CDN's fingerprint in the responses it already gets from a server
(EdgeHintsHandler on the federation client); and the networks that carry
only a CDN. The fixed ASN list is gone; ASNs shared with plain hosting
(AWS, DataPacket) no longer hide a server. A server's Geo records the
CDN, its domain and how it was found, and weekly snapshots now keep the
city and coordinates too.

Servers through time (ServerPlaces): /instances/:host/history lists a
server's weekly snapshots, a CDN-fronted server's geo names the CDN's
domain and where the server was before it (before_cdn), and
/api/privapub/v1/cdns and /cdns/:domain group servers by CDN with week
by week who joined and who left. Owner decisions recorded in ROADMAP.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LsXgEaXee4GCU1hwYgPJXw
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thepraandClaude Opus 5.5 committed 2026-10-04 11:33:39 +02:00
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@@ -323,8 +323,16 @@ group www-data and reaches the private mongod; `sudo -u www-data` works too.
`/api/privapub/v1/statuses/:id/provenance` and `/api/privapub/v1/instances/:host` (or `?host[]=`, up to 40; this
server answers too).
- **A server's place leaves only through `PublicGeo.Project`:** the city, coordinates (0.1°) and network it was located
to, whatever its size (there is no user threshold), and only the CDN's name for a CDN-fronted one. This server's own place is its host's address located once a day (`SelfLocation`), or
`Statistics:Geo:Self` when the owner sets it.
to, whatever its size (there is no user threshold), and only the CDN's name for a CDN-fronted one. This server's own
place is its host's address located once a day (`SelfLocation`), or `Statistics:Geo:Self` when the owner sets it.
- **CDNs are found three ways, best first** (`Infrastructure/Geo/CdnCatalog.cs`): the ranges a CDN publishes
(`CdnUpdater` downloads them daily into `CdnRangeSet`, keeping the old set when a download or parse fails), the CDN's
fingerprint in the responses PrivaPub already gets (`EdgeHintsHandler` on the federation client, memory only), and
a network that carries nothing but a CDN. Never list an ASN shared with plain hosting (AWS, Google, Microsoft,
DataPacket). A server's `Geo` records the CDN, its domain and how it was found.
- **Servers through time** (`Domain/Statistics/ServerPlaces.cs`, from the weekly `RemoteInstanceSnapshot`s):
`/api/privapub/v1/instances/:host/history`, a CDN-fronted server's `geo.before_cdn`, and the CDNs grouped by their
own domain (`/api/privapub/v1/cdns`, `/cdns/:domain` with weekly joined/left).
- **Remote objects are parsed for every shape in `ObjectShapes`:** `url`/`icon`/`image` as a value, an object or an
array; Markdown `content`; missing `mediaType`s inferred; thumbnails from any of their five places; and the typed
`Link`, `Video`, `Audio` and `Event` details. A Mastodon API card is built from those, never by fetching the linked page