Traffic roads come from OpenFreeMap vector tiles, or TomTom flow tiles with a
key (Hybrid by default). Military areas use OpenFreeMap polygons with a bundled
worldwide name index; wide views show named points. ALPR reads an hourly
OpenStreetMap extract. Cockpit place context and country, state and US county
outlines use bundled Natural Earth and US Census data. Overpass is used only
when an operator configures their own endpoint.
Also: camera arrivals no longer land below ground, keyless terrain retries on
429, bounded relation geometry for configured Overpass, one shared
OpenStreetMap credit, and separate tile and API transports for embedders.
Co-authored-by: theGaryLarson <[email protected]>
Co-authored-by: Milan Khanal <[email protected]>
Supersedes #420 by @GladiatorrX9, ported onto the current component layout with fixes from review.
Verified before merge: format, package boundaries, unit suite, build, and the browser tracking suite; a browser harness for the change where one applies; adversarial review applied.
Co-authored-by: Cyber Knight <[email protected]>
The proxy lists four mirrors and rotated on 5xx alone, so a 4xx ended the
fan-out. Measured against the live services: overpass-api.de and its lz4 alias
answer 406 to this proxy's User-Agent, while overpass.kumi.systems and
overpass.private.coffee answer 200 to the byte-identical request. Every
Overpass-backed feature — road geometry, annotation outlines, place lookup —
was failing on an Apache error page with two healthy mirrors untried.
The refusal was then cached. The cache guard read `status < 500`, so the error
page was written to memory and to disk, and the serve-stale guard used the same
threshold and declined to replace it. Boundary-class queries hold a month-long
TTL: four of twenty-three cached entries on this machine held that 406, dated
days after the mirror had stopped refusing.
Both decisions now go through one predicate. A payload is data only when it is
a 2xx that is neither rate-limited nor a body-level runtime error, so what may
be cached and what may be replaced by a stale entry cannot drift apart again.
A refusal every mirror agrees on is still reported with the first mirror's
status and body, so a malformed query says what upstream said — after every
mirror has had its chance, not instead of it. fetchOverpassPayload takes
injectable endpoints and fetch so the rotation is covered without a live
mirror; restoring either half of the old behaviour fails the new tests.
