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Switch to ESRI World_Street_Map via local CORS proxy

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Carto Voyager was returning 'API Key required' content for the
user (likely rate-limited or IP-blocked by Carto). Switched to
ESRI World_Street_Map which has CORS-friendly tiles with plenty
of place names and street labels.

URL format is different from Carto: {z}/{y}/{x}.jpg (y before x,
jpg not png). Updated the build to match. The local /esri/
proxy in default.conf handles the upstream CORS-incompatibility
by adding permissive CORS headers and a proper User-Agent.
This commit is contained in:
Richard Zink committed 2026-10-08 09:17:15 +02:00
1 parent e0c6b685ad
commit 4500fe3214
2 files changed
+22 -7
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default.conf
+18 -4
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@@ -8,10 +8,8 @@ server {
try_files $uri $uri/ =404;
}
# CORS proxy for map tiles. Forwards to the upstream tile server
# but injects permissive CORS headers so the browser can load
# tiles via cross-origin img.src requests. The 'resolver' is
# required by the proxy module to resolve the upstream hostname.
# CORS proxy for Carto basemaps (place names, OSM-derived).
# URL format: /carto/voyager/{z}/{x}/{y}.png
location ^~ /carto/ {
resolver 1.1.1.1 8.8.8.8 ipv6=off valid=300s;
proxy_pass https://a.basemaps.cartocdn.com/;
@@ -23,6 +21,22 @@ server {
add_header Access-Control-Max-Age 86400 always;
}
# CORS proxy for ESRI World_Street_Map. URL format:
# /esri/wsm/{z}/{y}/{x}.jpg -> ESRI /ArcGIS/.../World_Street_Map/.../tile/{z}/{y}/{x}
location ^~ /esri/ {
resolver 1.1.1.1 8.8.8.8 ipv6=off valid=300s;
rewrite ^/esri/streets/(.*)$ /ArcGIS/rest/services/World_Street_Map/MapServer/tile/$1 break;
rewrite ^/esri/topo/(.*)$ /ArcGIS/rest/services/World_Topo_Map/MapServer/tile/$1 break;
rewrite ^/esri/imagery/(.*)$ /ArcGIS/rest/services/World_Imagery/MapServer/tile/$1 break;
proxy_pass https://server.arcgisonline.com;
proxy_ssl_server_name on;
proxy_set_header Host server.arcgisonline.com;
proxy_set_header User-Agent "Mozilla/5.0 (compatible; tile-proxy)";
add_header Access-Control-Allow-Origin "*" always;
add_header Access-Control-Allow-Methods "GET, HEAD, OPTIONS" always;
add_header Access-Control-Max-Age 86400 always;
}
# CORS preflight handler
location ~* \.(png|jpg)$ {
if ($request_method = 'OPTIONS') {