Basemap Proxy

[ingalls]

Context

While importing the All The Maps Topo layer many of the sources failed to display in the UI. Upon further digging this is due to one of two reasons

• HTTP tile source resulting in an mixed content warning when used by the HTTPS UI
• CORS issue in that the layer does not have wildcard cors headers

Action

• Add order param to BaseMap API
• Add sort param to BaseMap API
• Add Proxy Implementation to avoid CORS issue