OSM blocked OpsLog and every user's map filled with "Access blocked / 403"
tiles at once. Their policy is explicit: an application must identify itself
with a proper, unique User-Agent on every tile request. A program that draws
its maps inside a web view cannot do that — the browser sets that header and
Leaflet fetches tiles as plain <img> loads — so this is not something to tune,
it is a service we are not entitled to use.
Two layers still pointed there: the Street basemap and the locator map. Street
moves to Esri World Street Map, the locator map to Carto, both key-free and
both under terms that cover a redistributed application. OpenStreetMap keeps
its credit: Carto's tiles are built from OSM data.
The locator map also gains the tile restraint the world map already had —
updateWhenIdle, no fetching mid-zoom, one ring of buffer. Fetching as fast as
the pointer moves is another item on OSM's block list, and the replacement
providers are under no more obligation to tolerate it than OSM was.
The basemap preference key is untouched, so an operator who had picked "Street"
still gets a street map, from the new source.
The map repeats the world sideways, and zoomed out several copies are on screen
at once. The rings span −180…+180 once, so the shading ended in a hard vertical
edge wherever the next copy began: it read as a rectangle laid over the planet
rather than as night.
Each ring is now drawn again shifted a full turn either way. Three copies cover
every zoom this map reaches and cost nothing — three more polygons on a canvas
layer.
Zooming the map to fit one world would have hidden it rather than fixed it, and
would have taken away the free pan and zoom the operator has.
Grey line — the day/night terminator and its twilight band, off by default,
redrawn every minute so a map left open all day is not silently wrong by
evening. Its own Leaflet pane below the overlays, non-interactive, so it never
hides the path or beam nor swallows a click.
The solar maths is pure and was checked against known positions before being
wired to anything: both solstices, the March equinox, the subsolar longitude at
12 UTC, and day/night at Paris, Tokyo, New York, Sydney and Reykjavik across
seasons and hemispheres. That last set is what caught the real bug: the equation
has TWO solutions per meridian and the naive branch put New York in daylight at
02:00 in December — the terminator at +63° where it belongs at −63°. A shaded
map that looks entirely plausible and is exactly mirrored. It now anchors on the
classical terminator and takes the branch nearest it, which is also what makes
the twilight band follow the terminator instead of jumping hemisphere.
Separately, from a Xiegu user: the protocol-trace checkbox does not stay ticked.
It is React state initialised to false on every mount, so a trace still running
came back unticked — the operator ticks it to "switch it on", which switches it
OFF, and the log they send contains no trace at all. Worse than a cosmetic bug:
it silently defeats the one tool asked for to diagnose their radio. Both boxes
(CAT and WinKeyer) now read their real state from the backend.
rouggy